pulp-paperworld magazine issue 1

PULP-PAPERWORLDThe Official Magazine

FEATURED ARTICLES

Nautilus® SuperWhite CO2 neutralYour 100% recycled premium paper

BTG’s Total Tissue Capability Concept.

Pyroll Group Contract converting- a new option

Alec Tindal onOptical Brightners & Paper whiteness

Picture Supplied © 2010 by Mondi

www.pulp-paperworld.com issue 1 / May 2010

Responsible Tank CleaningScanjet is the world’s leading producer of tank cleaning equipment for any industrial application.

Our tank cleaning equipment guarantees: Safe and healthy usage

t

Phone: 0046 31 338 75 [email protected]

Talk to us at Helsinki PulPaper June 1-3 stand 6e36 Wiesbaden Zellcheming June 29-July 1 stand 302

May 2010 CONTENTS

12

22

3. Contents

5. The task light in DuraPulp by SödraAt Milan Design Week 2010, April 14-19 at Superstudio Piú, Swedish lighting company Wästberg launched a lighting fixture made in DuraPulp

7. BTG- TTC Total Tissue CapabilityDriving cost saving through process improvement

12. NASH vacuum pumps forthe PM 7 in DunaujvarosGardner Denver Nash Germany supplied the complete vacuum system for dewatering in the forming and press sections

14. Pyroll Group/Contract con-verting - a new optionPaper and paperboard manufac-turers worldwide are constantly developing their businesses by making them more cost-efficient and customer-oriented

16. Optical Brighteners byAlec TindalOptical Brighteners have been used industrially for over 50 years. When used in paper, they are almost always based on di-amino stilbene structures.

17. Imery’s on pigment effects on coating strength Coating strength is a critical property of printing papers if they are to survive the demands of modern printing processes.

22. New Metso TechnologyCenter opens in ShanghaiThe official inauguration of the Metso Technology Center will take place on May 28, 2010

23. BTG at PulPaper 2010To see how BTG can raise your productivity!

25. DHL RAILeuropeKeeping your business on the right track

27. The Mutag BioChip™, the carrier for biological sewage water treatmentMulti Umwelttechnologie AG has over 15 years experience with culture media for immobil-ising micro-organisms during the treatment of sewage water

31. Mondi balances product emissions by introducing Nau-tilus® SuperWhite CO2 Neu-tral paperNautilus® SuperWhite CO2 Neutral is a 100% recycled paper that provides custom-ers with the option to offset the CO2 emissions produced in the manufacturing process.

33. Scanjet Systems - our concept – responsible tank cleaning

38. CEPI on Food contact: Self-regulation for paper industry

31

William Kenyon has recently intro-duced a low cost tensioner to comple-ment its full specification tensioner product and the company has already received its first UK order.

The new unit has been designed with rodless cylinders and a reduced frame.

It is aimed particularly at machines running at lower speeds and in posi-tions where space is limited.

Andy Barnes, Sales Manager, com-mented, “Over the last few years we have identified a clear demand for a tensioning system which caters for the specific requirements of machines with severe space restrictions and/or where limited running speeds mean that the capabilities of a full specification ten-sioner are not needed.

The addition of this new tensioner design means that William Kenyon has a rope threading solution to suit all positions and budgets.”

The rodless design lends itself to all systems - whether single, two or three ropes - and can be installed either horizontally or vertically, with minimal changes to the support framework.

The new tensioner is being supplied through the company’s UK operation in Dukinfield, Cheshire. The full speci-fication tensioner units will continue to be supplied from the company’s US subsidiary.

email: [email protected]

Willian Kenyonintroduces a new tensioner

to it’s range

Ahlstrom to

consolidate and expand its wiping

fabirics capacity in Italy

Ahlstrom, a global leader in the devel-opment and manufacture of high per-formance nonwovens and specialty papers, will consolidate its nonwoven wiping fabrics manufacturing plat-form in Italy, with the aim of increas-ing capacity, efficiency and breadth of product range.

The production of wipes will be located in two out of three existing manufacturing sites: Mozzate and Cressa, while the Carbonate plant will be closed. All the plants are located in the Milan region and belong to Home & Personal Nonwovens business area.

The consolidation will not have any major impact on personnel or cause significant non-recurring costs. The company plans to complete the pro-ject by early 2011.

Södra Cell Värö: the world’s first fossil-fuel-free

pulp millSödra Cell has now completed the in-vestments which make its Värö mill the world’s first fossil-fuel-free pulp mill.

Södra has made extensive energy in-vestments at Södra Cell Värö over the past few years. These investments mean that the pulp mill will now be free from fossil fuels.

Of late, we have spent SEK 600 million building:. New evaporation plant - for a more energy-efficient mill. Feed water preheating - to produce more electricity. Flue gas cooling - for more district heating. Bark drying - for optimum fuel for district heating supplies

These investments have just been com-pleted this spring and form part of an investment programme which has been ongoing since 2002, worth SEK 1.7 bil-lion to date.

Ahlstrom is a leading manufacturer of wiping fabrics, offering a broad range of materials and technologies for di-verse wiping applications. The com-pany manufactures wiping fabrics at its sites across Europe, USA and South America

Copyright © Ahlstrom Corporation

Europe

Tel: +32 (0) 2 655 63 40�

N. America

Tel: +1 770 594 0660�

S. America

Tel: +55 11 2133 0055�

Asia Pacific

Tel: +65 67 99 60 60�

� Internet:

www.imerys-paper.com

ADDING VALUE TO PAPER

IMERYS Pigments for Paper actively works in partnership with customers

to develop new and innovative solutions to solve their technical challenges.

Our Research & Development teams have a unique knowledge of mineral

technology as well as an unrivalled depth of application expertise, to

improve the formulations of the customer’s products and complement

the natural value of the minerals we supply.

PIGM

ENTS FO

R PAPERBENEATH EVERY SURFACE

DEPTH OF KNOWLEDGE

DuraPulP

DuraPulp is made from selected pulp from Södra combined with PLA (Polylactic acid, a renewable biopolymer produced from starch). The two components in combination provide special properties that can be reinforced through hot pressing. DuraPulp is a material with high wet strength, high water resistance, high dimensional stability as well as high tensile strength and bending stiffness. DuraPulp is made from 100 per cent renewable fibres and is fully biode-gradable.

The paper Task lighT in Durapulp by söDra

W Ä S T B E R G

L a u n c h e d i n 2 0 0 8 , W ä s t b e r g

l a m p s a r e n o w s o l d g l o b a l l y

a n d h a v e b e e n h o n o u r e d

w i t h m o r e t h a n 2 0 a w a r d s

f o r d e s i g n e x c e l l e n c e ,

i n c l u d i n g 6 G o o d D e s i g n

Aw a r d s , 4 r e d d o t a w a r d s ,

D e s i g n Aw a r d o f t h e F e d e r a l

R e p u b l i c o f G e r m a n y a n d

a n E l l e I n t e r i o r D e s i g n

P r i z e . W ä s t b e r g i s b a s e d

i n H e l s i n g b o r g , S k å n e ,

t h e s o u t h e r n m o s t p a r t o f

S w e d e n .

S Ö D R A

S ö d r a i s a S w e d i s h g r o u p

w i t h b r o a d f o r e s t r y o p e r a -

t i o n s a n d i s a l e a d i n g p r o -

d u c e r o f p u l p , w o o d p r o d -

u c t s a n d b i o e n e r g y. T h e

c o m p a n y, w h i c h i s o w n e d

b y 5 2 , 0 0 0 f o r e s t o w n e r s i n

s o u t h e r n S w e d e n , h a s 4 , 0 0 0

e m p l o y e e s a n d s a l e s o f S E K

1 7 b i l l i o n .

C L A E S S O N K O I V I S TO R U N E

I n t e r n a t i o n a l l y r e n o w n e d

a r c h i t e c t u r a l o f f i c e f o u n d e d

i n 1 9 9 5 b y M å r t e n C l a e s s o n ,

E e r o K o i v i s t o a n d O l a R u n e .

T h e o f f i c e h a s a l s o e s t a b -

l i s h e d i t s e l f a s a s u c c e s s f u l

d e s i g n s t u d i o . To d a y, t h e y

w o r k w i t h m o r e t h a n 5 0 c o m -

p a n i e s w o r l d w i d e .

Claesson Koivisto Rune w101 by Wästberg

At Milan Design Week 2010, April 14-19 at Superstudio Piú, Swedish light-ing company Wästberg launched a lighting fixture made in DuraPulp and developed in close collaboration with Swedish forestry industry company Södra and Swedish architects and designers Claesson Koivisto Rune.

Last year Claesson Koivisto Rune and Södra developed the Parupu children’s chair out of DuraPulp, thus proving it pos-sible to make a real chair of paper. Now Claesson Koivisto Rune and Södra team up with Wästberg to challenge them-selves even further: merging electricity, paper and light, using paper, not only as a component or for casing, but really fully integrated.

“Combining old wisdom with ground-breaking technology is elementary to Wästbergs philosophy” says Magnus Wästberg, founder and CEO of Wästberg. “Paper has been used throughout his-tory for making lamp shades. Now we are using paper for the actual structure of the fixture adding advanced LED technology.”

“One principal mission for Södra, together with innovative partners, is to develop and supply tomorrow’s raw materials based on renewable forest resources”, says Karin Emilsson, director of technology at Södra and head of Södra Innovation. ”The DuraPulp lamp by Wästberg meets high customer standards of functionality and design although it’s made out of a new totally renewable material.”

Caption:NASH 2BE3 vacuum pumps with separator, motor and gearbox on the PM 7 in Dunaujvaros

NASH vacuum pumps for the PM 7 in Dunaujvaros

Gardner Denver Nash Germany supplied the complete vacuum system for dewatering in the forming and press sections of the new PM7 paper machine in Dunaujva-ros. This technology has already proven itself in every other paper machine within the Hamburger Group, with robustness, efficiency and flexibility that guarantee the highest operational reliability.

On the new PM7 in Dunaujvaros, nine NASH 2BE3 vacuum pumps are used. Each pump is driven by a motor equipped with a frequency converter, allowing the rota-tional speed to be set to exactly suit the actual process conditions. This causes the vacuum pressure to adapt to process conditions as well. Additionally, three centrifugal fans for the low-vacuum scavenge points in the forming section have been included. As a result, the vacuum sys-tem provides the greatest flexibility at optimum efficiency.

For the plant operator, the advantages of a NASH liquid ring vacuum system were obvious:•An extremely robust system: overload safe and resistant to process failures•Very high overall efficiency, particularly in conjunction with optimum control•Optimum felt dewatering through the volumetric op-erating principle of the liquid ring vacuum pump - the

scavenge pressure adjusts automatically to suit the felt permeability•Scavenge-side liquid carry-over with low fiber content is not a problem for the NASH pumps•Rotation speed control offers the potential of high energy savings•Low specific power requirements•Low noise emissions due to low peripheral speeds of the vacuum pump•Future system adaptation, without influencing other scavenge points, is easily done by changing the rotation speed of individual vacuum pumps•High operational safety, even if individual vacuum pumps are deactivated•Very low service and maintenance costs•Confidence in more than 100 years of know-how accu-mulated by the market leader in the paper industry

With the decision to use NASH vacuum pumps, the plant operator also made a decision for an innovative, environ-mentally friendly and economical attractive solution.

About the Company:Gardner Denver Nash is the Nash Division of Gardner Denver, Inc. Originating from nash_elmo Industries, the company is the world’s leading manufacturer of liquid ring vacuum pumps, compressors and engineered sys-tems. For more than 100 years, Gardner Denver Nash has engineered and produced liquid ring pumps and vacuum and compressor systems for the most demanding appli-cations in a variety of fields and industries.

Contact:Nash – Zweigniederlassung der Gardner DenverDeutschland GmbHMarketingWolfgang KraftPhone: +49 (0)911 / 1454-7771Fax: +49 (0)911 / [email protected]

Pyroll Group/Contract converting

Paper and paperboard manufacturers worldwide are constantly developing their businesses by making them more cost-efficient and customer-oriented. One way to achieve this is to use a re-liable partner for converting, storage and logistics.

By relying on a professional and experienced contract converter for converting such as tailored sheeting, rewinding and ream wrap-ping of paper and board, the manufacturers can focus on their core business, free capi-tal and save time and money. If the manufacturers´ own resources are insufficient, the contract converter can offer extra capacity when needed.

Pyroll is the largest privately-owned contract converter in Europe and the market leader in finishing treatment services to the paper and paperboard industries. It acts as a flexible link between manufacturers and their clients.

Together with its partners, Pyroll also offers compre-hensive packaging and logistics services. The an-nual capacity of Pyroll´s five

a comprehensive service from paper and paperboard converting to storage and transports to customers and end users all over Europe. Pyroll can also process mate-rial flows coming outside of Europe.

Pyroll´s sites in Finland are located on excellent transport

units operate state-of-the-art facilities and machinery.

Pyroll is open-minded to developing new service con-cepts. The company also has the capacity to launch new converting facilities in the future, either as integrated in-house units in the clients´ premises or on as a cooperat-ing partner.

Pyroll also offers its expertise as a planning and building consultant for companies considering a sheeting unit investment of their own.

The two other business lines of Pyroll are Pack-ages and Paper Merchant. Pyroll manufactures a wide range of consumer packages from paper, paperboard and plastic. As a paper merchant, Pyroll is a member of the Igepa Group, an international organization of leading paper merchants.

Additional information:Tero KarstikkoMarketing ManagerPyroll Group/Contract con-vertingTel. +358 40 [email protected]

converting units amounts to 250,000 tonnes of paper and paperboard. Sheeting is the most important sector. Prac-tically all sheet and reel sizes can be processed. Four of the Pyroll converting units are in Finland and one is in Poland.

The Strykow unit in Central Poland has a prime logistic location with excellent road and railway connections in all directions - it is situated at the intersection of the two major highways in Poland.

An east-west motorway, part of the Trans-European Corridor, is under construc-tion and will connect some of Germany´s key industrial cities through Poland all the way up to Moscow.

Pyroll can offer its clients

connections -highways, rail-ways and two major export ports. They also offer an ef-ficient gateway to the Rus-sian market and of course to the Nordic countries. All the

- a new option

Chemical BackgroundOptical Brighteners have been used industrially for over 50 years. When used in paper, they are almost always based on diamino stilbene struc-tures. The main building blocks of the chemical structure are always the same but the functional end groups that give the Optical Brightener its specific application characteristics are controlled by the substitution of different amines.

There are two sulphonic acid groups within the main body of the chemi-cal structure therefore every stilbene Optical Brightener has some water solubility.

The linear/planar shape of the mol-ecule allows it to attach very well to cellulose and starch, and other polymers that contain –OH groups. Optical Brighteners usually have lit-tle or no affinity for fillers, pigments, latex etc.By using amines with sulphonic acid groups attached, the solubility of the Optical Brightener can be increased. The shape of the molecule can also be changed slighted by different amines, so that the performance is affected in different application conditions.

ApplicationIn the wet-end of the paper mak-ing process tetra sulphonated (4 sulpho groups) or di sulphonated (2 sulpho groups) products are used. In the size-press tetra sulphonated, modified tetra sulphonated (4 sulpho groups, but with a modified struc-ture to improve solubility) and hexa sulphonated (6 sulpho groups) are required because the solubility must be higher. In the coating any type can be used but the performance depends on the coating recipe, in particular the additives that contain

–OH groups such as Starch, PVOH, CMC etc.There have been many developments in Optical Brighten-ers over the years and a review of the patents is recommended for anyone with an interest in the chemistry involved. There are many different structures available commercially.

FormulationMost Optical Brighteners for paper are sold as liquids, the formulation of the liquid is often important to the papermaker as many tonnes are used over the course of the year. During the Optical Brightener manufactur-ing process, salt is formed (NaCl) which destabilises the liquid in some cases.

This salt needs to be removed by reverse osmosis or else stabilising compounds need to be added such as urea. There are a large number of products available with special formulations to solve certain applica-tions and environmental issues.

Current IssuesMost of the major issues affecting Optical Brighteners over the last 2 to 3 years have revolved around supplies of the major raw material Diamino Stilbene. The industry con-sumes huge volumes of raw materials and supply difficulties have a knock on effect on Optical Brightener prices. Diamino Stilbene is made from para Nitro Toluene (PNT).

This stage of the reaction is consid-ered to be quite hazardous, therefore the manufacture of PNT is only carried out by a very few companies globally. There have been inter-ruptions in the supply of Diamino Stilbene during the Beijing Olym-pic period and in supplies of PNT during 2010, often due to company closures because of environmental conditions.

Optical BrightenersBy

alec tindal Managing directOr Of MakOwhiteness ltd.

KAOLIN

GCC

PCC

IMERYS TECHNICAL GUIDE

Strength Properties of Paper CoatingsCoating strength is a critical property of printing papers if theyare to survive the demands of modern printing processes.

Offset lithography in particular is one of the most demandingprocesses in terms of the requirements of the paper substrate.High speeds and up to 8 consecutive ink and fountainapplication are common and on perfecting sheet-fed presses(printing both sides simultaneously), there may be up to 12passes, before the paper can relax. In order to survive thisprocess, the coating must have sufficient strength to avoidpicking in the presence of high tack inks and aqueous fountainsolutions Good dimensional stability is also needed to ensureprint stays in register and for sheet fed grades to avoid paperjams, which can result in lost productivity and waste.

However, printing is not the only process demanding paper strength. Further examples includecalendering where dusting can occur if the coating is under bound and in packaging grades, coatingcrack during folding can be a major issue.

Factors Influencing Printing StrengthThere are a large number ofinterdependent factors whichdetermine if a coating will givecoating pick. This is summarisedin the diagram opposite.Pigment related factors arecoded orange, binder blue, andpress factors green. The keyfactor is the “binder demand” ofthe pigment system. This is bestdefined as the amount of binderneeded to give acceptablerunnability on the press.

For a given binder type, binder demand is dictated by a combination of the physical and chemicalproperties of the pigment system together with the coating structure generated. These aspectsare discussed further in the following sections.

PIGM

ENT EFFEC

TS ON

CO

ATING

STRENG

THPigment Effects on Ink PilingThe build up of deposits on printing blankets (ink piling) can havea significant effect on press runnability. While coating strength isan important factor affecting piling, there have been reports thatpigment type also affects piling tendency, with GCC-basedcoatings more likely to cause a problem than those based onkaolin. While this is unsubstantiated for multi-layer coating, recentwork has clearly shown that in single coating, kaolin type and levelin the recipe can affect piling. Piling results from systematic pilotand full scale printing studies are shown below. Studies were basedon typical European LWC recipes and are described in more detailin the Imerys ”LWC Formulation Guide”.

Figure 9: Ink Piling effects with LWC coatings.

The results of the study showed clear differences between theLWC formulations, with the key differentiators being the kaolinlevel and kaolin type in the recipe. In general it was evident thatkaolins with larger plate diameters gave lower ink piling thanultrafine kaolin and that piling also reduced with increased kaolinin the recipe. Moreover, it was clear that the differences weresignificant, with the extent of the build up doubling between thebest and the worst recipes. Subsequent studies have indicated that

the effects were related primarily to differences in ink tack buildand intrinsic coating strength between the recipes.

Pigment Effects on StiffnessStiffness is another important strength factor, not only for the feelof the paper, but also for press runnability, especially in sheet fedoffset applications. Low stiffness also often limits the lower basisweight for a paper.

There have been a number of published studies assessing howdifferent pigment systems affect stiffness. The results have shownthat kaolins give higher elastic modulus leading to greater stiffnessthan GCCs in coating applications. Kaolin aspect ratio and the levelof kaolin in the recipe is also important in determining the overallstiffness. Higher amounts of high aspect ratio kaolins give thegreatest stiffness.

The aspect ratio effects are shown below. Data were taken from awoodfree pilot coater trial where 50:50 kaolin/GCC blends withdiffering aspect ratio kaolins were compared with a 100% GCCrecipe. A 16% increase in bending stiffness over GCC was observedwith coatings containing 50% of the highest aspect ratio kaolin.

Figure 10: Mean geometrical bending stiffness of C2S woodfreepapers.

EuropeTel: +44 1726 818000

Asia PacificTel: +65 67 99 60 60

N. AmericaTel: +1 770 594 0660

S. AmericaTel: +55 11 2133 0055

[email protected]

©IMERYS - May 2010


Binder Demand

Binder PropertiesTg, COOH, Chemistry

Particle Size

Fount solutionInk oils

Pigment Size,Shape &

Surface Area

Coating PoreStructure

Coating Strength(Pick Resistance)

Ink SettingTack Build

= Applied StressMineral/Latex

Adhesion

4000

5000

6000

7000

8000

9000

10000

11000

12000

102030405060

Kaolin Level in Recipe %

Small Plate Diameter

Large Plate Diameter

Highest Piling

Low Kaolin

A A

B

C

C

To

p B

lan

ket

Scan

s 6

00

dpi/

pixe

ls

54.0

55.0

56.0

57.0

58.0

59.0

60.0

61.0

62.0

63.0

64.0

65.0

66.0

0 10 20 30 40 50 60

GCC

# 2 clay

CapimDG

ContourXtreme E100

Kaolin shape factor

Mea

n be

ndin

g re

sist

ence

, coa

ted

and

cale

nder

ed p

aper

, 50%

cla

y, m

N

SummaryThe strength of coated papers has always been a topic of considerable interest because of the cost implications involved in bindingcoatings. In this guide we have highlighted the important pigment factors which control the strength characteristics of coatings.

Pigment type will affect coating strength in a number of ways:

Fine pigments with high surface area have a high binder demand and give a fast tack build, putting more stress on the paper surfaceduring ink application,Narrow p.s.d. pigments give very porous structures which are weak and lose more binder into the basepaper,The role of shape is much more complex, but in general higher shape kaolin gives :

- Better binder retention (+)- Slower ink setting and lower stress during ink application (+)- Better coverage, which can also help reduce fibre pick (=/+)- Better in-plane strength, and increased modulus, leading to higher stiffness (+)- Slightly weaker z-directional strength (-)- Increased likelihood of fount retention in coating layer (-)

In practice most coatings today are based on carbonate with kaolin used at low levels. In this situation the benefits associated with highshape kaolins outweigh the drawbacks. Imerys has a wide portfolio of coating pigments which can be used in combination to optimisebinder level, and the application knowledge to help customers use them to best advantage.

PIGMENTS FOR PAPER


Pigment Particle Size Effects andCoating Strength The binder demand of a pigment is commonly linked to its surfacearea, with fine, high surface area pigments generally requiringhigher binder levels to give the same coating strength as coarser,low surface area pigments. This is shown for a series of GCC andPCC pigments in Figure 1. This, however, is a simplification, sinceit is evident that pigment designs with narrow particle sizedistributions, such as PCC, are inherently weaker than their broadp.s.d. counterparts, even if the surface area is the same. Narrowp.s.d. pigment designs lose more binder into the basesheet duringcoating application, and also generate coatings with a high porevolume which are inherently weaker (Figure 1). Typically we wouldexpect a narrow particle size GCC or PCC to require 20% or morebinder than a similarly sized broad particle size pigment.

Figure 1: Pigment type and surface area effects on strength(PCC and GCC)

Particle Shape Effects andCoating StrengthParticle shape is also very important when considering themechanical properties and binder requirements of coatings. Highaspect ratio particles, such as kaolin, give coatings which havedifferent strength properties depending on the direction the stress isapplied. Figure 2 shows this for a series of kaolin/ GCC blends. GCCcoatings have similar strength in all directions. As the proportion ofkaolin is increased, the strength in the in-plane (xy) and z-directiondiverge, with the xy-direction strength increasing. This increase in xystrength is accompanied by an increase in modulus which can be anadvantage in resisting cracking during folding.

Figure 2: Tensile strength of coating layers measured in the xyand z directions

Particle shape also influences ink setting, with high aspect ratiokaolin particles reducing the number of pores at the surface andslowing down the ink setting rate. This is readily seen from SEMpictures of coating surfaces below.

Figure 3: SEM images of coating surfaces

More information on this can be found in the companion ImerysTechnical Guide, “Coatings for Offset Lithography”. However, anillustration of the power of shape for controlling ink tackdevelopment is shown in Figure 4. In this study, fine platey andfine low shape kaolin particles were added in correspondingamounts to a base kaolin. In the case of the low shape particles,the rate of tack development increased, while addition of plateyfines slowed ink tack development down, thus reducing the stressduring printing.

Another example is shown below in woodfree studies based onfast setting 80:20 PCC/kaolin coatings. Here the influence of kaolinto control ink rate in a porous coating was measured against theability of increasing binder level to close the surface. The resultswere surprising in that changing only 20 parts of the pigmentrecipe to a high aspect ratio kaolin had much the same impact onink tack development as increasing binder by 2-4 parts (or 22-44%).

Figure 5: Pigment and binder effects on ink tack development

Influence of Coating Structure onthe Weakening Effects of PrintingFluidsThe penetration and retention of fount solution and ink oils intothe coating layer is also important in controlling strength duringoffset printing. Recent work has shown that water and mineral oilhave a pronounced, but transient, weakening effect on coatingstrength. When these fluids are present in the coating layer,strength is reduced, but once they either pass into the bulk of thepaper, become emulsified in the ink or evaporate, the strength isregained. Our studies in this area have indicated that the decreasein strength is a function of the fluid polarity, with more polarliquids such as linseed oil and water, giving a greater decrease instrength. This is shown in Figure 6. Our research suggests thatthe mechanism is linked to the ability of polar fluids to weakenthe ionic bonding between the pigment particles and the latexbinder causing failure.

For coatings the key factor is the ability of coating to trap fountsolution during the timescales relevant to the printing process. Thisin turn will be related to the coating structure (porosity) and hencepigment properties. The effect of coating structure has beenexplored by comparing coatings made with 100% GCC and 100%coarse platey kaolin using CsCl labelled fount solution and SIMSanalysis to image the location of the Cs+ (Figure 7).

Figure 7: SIMS analysis of Cs+ labelled fount

The results of these experiments clearly show that at longer timescales, coatings containing high shape pigments are more likely toretain fount solution than coatings containing low shape pigmentswhere the fount although rapidly absorbed, passes quickly to thebasepaper. The suggestion is that higher shape pigments mayincrease the likelihood of fount weakening. However, it must beremembered that coatings based on high shape pigments alsotend to have lower surface porosity. On the short timescalesrelevant to the printing process it is possible that with thesecoatings much of the fount solution may not penetrate thecoating and instead end up being emulsified in the ink.

In contrast unsaturated oils such as linseed oils dry by oxidationand hence remain in the coating layer permanently. Figure 8shows the change in tensile strength over 3 months for kaolincoatings saturated with linseed and mineral oils. The linseed oilsaturated coating is permanently weakened, whilst the mineral oilevaporates allowing the coating to regain its strength.

Figure 8: Linseed oil remains in the coating after printing andcauses permanent weakening

PIGMENTS FOR PAPER

0

20

40

60

80

100

120

7 8 9 10 11 12 13

Broad GCC

PCC

Binder level pph

Dry

Pic

k V

eloc

ity,

cm

s-1

Stronger

6 8 10 12 14 16 18 20

Broad GCC

Narrow GCC

PCC

9.5pph latex

Surface area, m2 g-1

0.00

1.00

2.00

3.00

4.00

5.00

6.00

020406080100

% GCC

Ten

sile

str

engt

h M

Pa

z-direction

In-plane

Blends of ultrafine GCC with ultrafine platy kaolin,5 pph latex

Platy Kaolin

GCC

PCC

Higher SurfacePorosity

Slower InkSetting

Sepa

rati

on F

orce

-->

93/9

94/1795/2594/1893/23

0 30 60 90 120 150 180 210

Time after Printing (Seconds)

+ Blocky Fines

+ Platey Fines

2µm/¼ µm

0

1

2

3

4

5

6

7

8

0 10 20 30 40 50 60 70

Time after Printing (s)

Tack

Fo

rce

(N)

PCC/Fine Clay

PCC/Fine Clay +2 Parts SA Latex

PCC/Fine Clay +4 Parts SA Latex

PCC/Platey Clay

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

4 6 8 10 12 14 16 18 20

pph latex

Tens

ile s

tren

gth,

MPa

originalMineral oil

Linseed oil

Kaolin UFP, 60 s immersion time

Waterredried

Woodoil Water/IPA

Water

0

1

2

3

4

5

6

Unwetted Wetted Redried

Tens

ile s

tren

gth

MPa

Linseed oil

Mineral oil

Figure 4: High shape factor particles slow down ink setting andcan reduce ink tack build with time

Figure 6: Influence of fluids on the tensile strength of latex-bound kaolin coatings. Polar fluids have the greatest weakeningeffect.

Kaolin

GCC

KAOLIN

GCC

PCC


Strength Properties of Paper CoatingsCoating strength is a critical property of printing papers if theyare to survive the demands of modern printing processes.

Offset lithography in particular is one of the most demandingprocesses in terms of the requirements of the paper substrate.High speeds and up to 8 consecutive ink and fountainapplication are common and on perfecting sheet-fed presses(printing both sides simultaneously), there may be up to 12passes, before the paper can relax. In order to survive thisprocess, the coating must have sufficient strength to avoidpicking in the presence of high tack inks and aqueous fountainsolutions Good dimensional stability is also needed to ensureprint stays in register and for sheet fed grades to avoid paperjams, which can result in lost productivity and waste.

However, printing is not the only process demanding paper strength. Further examples includecalendering where dusting can occur if the coating is under bound and in packaging grades, coatingcrack during folding can be a major issue.

Factors Influencing Printing StrengthThere are a large number ofinterdependent factors whichdetermine if a coating will givecoating pick. This is summarisedin the diagram opposite.Pigment related factors arecoded orange, binder blue, andpress factors green. The keyfactor is the “binder demand” ofthe pigment system. This is bestdefined as the amount of binderneeded to give acceptablerunnability on the press.

For a given binder type, binder demand is dictated by a combination of the physical and chemicalproperties of the pigment system together with the coating structure generated. These aspectsare discussed further in the following sections.

PIGM

ENT EFFEC

TS ON

CO

ATING

STRENG

TH

Pigment Effects on Ink PilingThe build up of deposits on printing blankets (ink piling) can havea significant effect on press runnability. While coating strength isan important factor affecting piling, there have been reports thatpigment type also affects piling tendency, with GCC-basedcoatings more likely to cause a problem than those based onkaolin. While this is unsubstantiated for multi-layer coating, recentwork has clearly shown that in single coating, kaolin type and levelin the recipe can affect piling. Piling results from systematic pilotand full scale printing studies are shown below. Studies were basedon typical European LWC recipes and are described in more detailin the Imerys ”LWC Formulation Guide”.

Figure 9: Ink Piling effects with LWC coatings.

The results of the study showed clear differences between theLWC formulations, with the key differentiators being the kaolinlevel and kaolin type in the recipe. In general it was evident thatkaolins with larger plate diameters gave lower ink piling thanultrafine kaolin and that piling also reduced with increased kaolinin the recipe. Moreover, it was clear that the differences weresignificant, with the extent of the build up doubling between thebest and the worst recipes. Subsequent studies have indicated that

the effects were related primarily to differences in ink tack buildand intrinsic coating strength between the recipes.

Pigment Effects on StiffnessStiffness is another important strength factor, not only for the feelof the paper, but also for press runnability, especially in sheet fedoffset applications. Low stiffness also often limits the lower basisweight for a paper.

There have been a number of published studies assessing howdifferent pigment systems affect stiffness. The results have shownthat kaolins give higher elastic modulus leading to greater stiffnessthan GCCs in coating applications. Kaolin aspect ratio and the levelof kaolin in the recipe is also important in determining the overallstiffness. Higher amounts of high aspect ratio kaolins give thegreatest stiffness.

The aspect ratio effects are shown below. Data were taken from awoodfree pilot coater trial where 50:50 kaolin/GCC blends withdiffering aspect ratio kaolins were compared with a 100% GCCrecipe. A 16% increase in bending stiffness over GCC was observedwith coatings containing 50% of the highest aspect ratio kaolin.

Figure 10: Mean geometrical bending stiffness of C2S woodfreepapers.

EuropeTel: +44 1726 818000

Asia PacificTel: +65 67 99 60 60

N. AmericaTel: +1 770 594 0660

S. AmericaTel: +55 11 2133 0055

[email protected]

©IMERYS - May 2010


Binder Demand

Binder PropertiesTg, COOH, Chemistry

Particle Size

Fount solutionInk oils

Pigment Size,Shape &

Surface Area

Coating PoreStructure

Coating Strength(Pick Resistance)

Ink SettingTack Build

= Applied StressMineral/Latex

Adhesion

4000

5000

6000

7000

8000

9000

10000

11000

12000

102030405060

Kaolin Level in Recipe %

Small Plate Diameter

Large Plate Diameter

Highest Piling

Low Kaolin

A A

B

C

C

To

p B

lan

ket

Scan

s 6

00

dpi/

pixe

ls

54.0

55.0

56.0

57.0

58.0

59.0

60.0

61.0

62.0

63.0

64.0

65.0

66.0

0 10 20 30 40 50 60

GCC

# 2 clay

CapimDG

ContourXtreme E100

Kaolin shape factor

Mea

n be

ndin

g re

sist

ence

, coa

ted

and

cale

nder

ed p

aper

, 50%

cla

y, m

N

SummaryThe strength of coated papers has always been a topic of considerable interest because of the cost implications involved in bindingcoatings. In this guide we have highlighted the important pigment factors which control the strength characteristics of coatings.

Pigment type will affect coating strength in a number of ways:

Fine pigments with high surface area have a high binder demand and give a fast tack build, putting more stress on the paper surfaceduring ink application,Narrow p.s.d. pigments give very porous structures which are weak and lose more binder into the basepaper,The role of shape is much more complex, but in general higher shape kaolin gives :

- Better binder retention (+)- Slower ink setting and lower stress during ink application (+)- Better coverage, which can also help reduce fibre pick (=/+)- Better in-plane strength, and increased modulus, leading to higher stiffness (+)- Slightly weaker z-directional strength (-)- Increased likelihood of fount retention in coating layer (-)

In practice most coatings today are based on carbonate with kaolin used at low levels. In this situation the benefits associated with highshape kaolins outweigh the drawbacks. Imerys has a wide portfolio of coating pigments which can be used in combination to optimisebinder level, and the application knowledge to help customers use them to best advantage.

New Metso Technology Center opens in Shanghai

The official inauguration of the Metso Technology Center will take place on May 28, 2010 in Shanghai. The opening of the center brings facilities for the world’s newest and most modern valve factory and supply center as well as facilities for the pro-duction, assembly and testing of process automation systems.

In addition to the office prem-ises, the center also comprises premises for Automation busi-ness line’s sales, project and engineering units in China. All of Automation business line’s units in the Shanghai area will be operating at the new center.

The Metso Technology Center, located in the Shang-hai Waigaoqiao Free Trade Zone, comprises 20,000 square meters of floor space for manufacturing and 9,500 square meters of office area. Initially, the cent-er will employ about 250 people. Later, in 2013, the number of employees forming a functional entity is estimated to increase to 650. Metso’s applications, solutions and knowledge-based services are de-signed to improve customers’ process performance and profitability by increasing productivity, quality, process availability and environmental friendliness.

With a strong presence in China, Metso can pro-vide better service to energy, oil and gas, and pulp and paper customers, especially in China and Asia Pacific. It also enables the development of a global supply chain for valve production.

One of the most notable transactions over the course of some years has been the delivery of more than 3,000 rotary control valves and 1,000 automated valves and 3,500 intelligent valve controllers to one of the world’s largest ethylene project in China.

Metso is also the leading supplier of automation

solutions to the pulp and paper industry in the Chi-nese markets. Metso is a clear industry leader in flow control devices for the pulp and paper industry, with a 60% share of the markets served. Metso has supplied over 100 control systems to the power industry and well over 100 control systems to the pulp and paper industry.

Metso made its first deliveries to China back in the 1950s. It started its own operations in China through a joint venture in the 1980s. Today, Metso operates in 16 different localities in China, where it has about 2,600 employees.

Metso is a global supplier of sustainable technology and services for mining, construction, power genera-tion, automation, recycling and the pulp and paper industries. We have about 27,000 employees in more than 50 countries. www.metso.com/automation

Metso AutomationEsa Lumme, Director Shanghai Plant, Metso’s Auto-mation business line Tel: +86 1391 865 8049 E-mail: [email protected] http://www.metso.com/automation

DHL RAILEUROPE KEEPING YOUR BUSINESS ON THE RIGHT TRACK

The fast, reliable and environmentally friendly way of connecting European business centres.

DHL RAILEUROPEDHL Freight Product Portfolio

DHL RAILEUROPE provides a flexible and ecological rail

network to serve all major European business centres. Whether

you need a single wagon, a group of wagons or a complete

train – we are your partner.

Everything under control.

We operate a Competence Centre in Sweden and terminals

in Europe, to ensure your shipment gets to wherever it needs

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We combine all rail logistics services to offer you customised

solutions for the requirements of your business

this affords us the flexibility to negotiate competitive prices –

but also to keep the level of quality under our control.

Count on us.

delivery, and offer a wide range of associated services

European rail points

within the growth markets of Eastern Europe, there is

always one on your doorstep

Even if your volumes are subject to seasonal fluctuations,

we are flexible enough to deal with changed requirements

reliably and competitively. Want to know more?

the services offered by DHL RAILEUROPE reflect this.

Our network provides you with integrated supply chain

management including terminal services, transport and

on our capabilities according to RID regulations.

With representation throughout mainland Europe,

Scandinavia and CIS (Commonwealth of Independent

States), we are where you need us.

rail network throughout Europe and beyond

large volumes across long distances

international markets securely, safely and efficiently

exceptional expertise in rail solutions and associated

transport services

supply chain

Value-added services

transports

Quality and services

managed efficiently and reliably

Maximum flexibility

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For further information on DHL Freight service availability, visit your

local DHL website. All services are subject to terms and conditions.

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THE VALUE-ADDED INTERNATIONAL RAIL NETWORK.

DHL RAILEUROPEDHL Freight Product Portfolio

The Mutag BioChip™, the carrier for biological sewage water treatment

Stefan Christof Bidinger, Bernd Dzedzig, Dr.-Ing. Markus Geiger, Bernd Rauch (Multi Umwelttechnologie AG, Aue) Multi Umwelttechnologie AG has over 15 years experience with culture media for immobilising micro-organisms during the treatment of sewage water. During this time, we have used almost every known carrier in many different large plants, types of sewage water and areas of application. The knowledge that we have gained as a result, along with the comprehensive data material, enables us to make a well-founded assessment of the specific performance data of the in some cases extremely different carriers. Since Multi Umwelttechnologie AG was at no time linked to a particular supplier, we were able - on the basis of the operational experience gained - to undertake targeted optimisation either of the carrier itself or the process conditions. The emphasis here was on minimising operational problems arising from the weaknesses of "conventional" culture media that these days cannot be overlooked. The thorough implementation of our requirements for an optimum carrier led to one result: the Mutag BioChip™. From our point of view, this is currently the "best available carrier" specifically for purifying types of sewage water that are difficult to treat.

1. How the Mutag BioChip™ works

The special way in which the Mutag BioChip™ works, together with its efficiency, are readily explained in relation to the characteristic fluid bed process conditions. A prerequisite for the biological transformation of sewage water contents in the fluid bed is the immobilisation of the micro-organisms on the surface of the carrier. The effectiveness of the biological transformation is determined here by the carrier's "active" surface. This requires the following demands to be placed on the carrier: Firstly, there must be sufficient protected surface to enable the micro-organisms to survive and multiply in these areas, and secondly it is necessary to realise maximum mass transfer (substrate, oxygen, metabolic products) between the micro-organisms and the sewage water. At first glance it would appear that fulfilling both these requirements simultaneously is contradictory it process terms, but this can be refuted below:

First, the error of maximising the volumetric surface (in m²/m³ carriers). It is of course possible to produce extremely porous carriers, but it is also a fact that these pores must be accessible to the micro-organisms as a potential colonisation surface. It is easy to see that this is scarcely possible for cavities inside a carrier. If, as is commonly the case, the transformation efficiency is correlated against the porosity, this represents a fatal distortion of the actual conditions.

This is different in the case of the Mutag Biochip™: Here, a relatively thin and largely open carrier provides an extremely large surface in which the micro-organisms can form colonies in protected pores, but at the same time still remain in intensive contact with the surrounding fluid (sewage water). Consequently, the micro-organisms can be optimally supplied with nutrients and the metabolic products are efficiently transported away, which at least partially explains the effectiveness and high degradation efficiency of the Mutag BioChip™. Expressed in figures: the active surface of the Mutag BioChip™ is more than 3,000 m²/m³ (Figures 1 and 2).

Figure 1: Colonised Mutag BioChip™s

Figure 2: Pore system of the Mutag BioChip™ (cross section)

Next point: Limitation of the biological transformation by the "thick" biofilms due to siltation and "non-biological" impurities. Even if a high microbial population density can become established on a carrier, if the structure and / or geometry of the carrier is unsuitable, the mass transfer into the "deeper" layers of the biofilm is reduced. Consequently, the degradation efficiency of the immobilised biological system is continually reduced over the operating time.

Figures 3 and 5 illustrate how this can appear for various carriers and carrier geometries. The consequences of a carrier blockage are not hard to imagine. However, the countermeasure is very simple. The special geometry of the Mutag BioChip™ enables the hydraulic shear forces acting on the surface to be intensified and a self-cleaning process to be initiated, which constantly renews the carrier's active surface. This effectively prevents limitation of the biological efficiency due to mass transfer resistances.

Figure 3: Blocked carrier (paper sewage water)

Figure 4: Mutag BioChip™s in parallel operation

Figure 5: Mutag BioChip™s and conventional carriers in parallel operation (result)

Problems with the distribution and mixing-in of the carrier are prevented by the parabolic shape. In order to optimise the mass transfer (as already addressed a number of times), the Mutag BioChip™ was shaped like a parabolic disc. Although this has an uncontrollable motion profile from a flow mechanics point of view, this has proven to be extremely positive in this case. In addition to the increased level of turbulence, which has the direct effect of increasing the mass transfer, the mobility of the individual carrier in the cluster is effectively increased. This results in a homogeneous distribution of the carrier within the entire reaction space, thus enabling the formation of "dead zones" to be effectively reduced.

2. Operational results

Of course, theoretical observations require verification of the forecast advantages within a confidence-building time frame. So far, we are able to fall back on three years worth of operational experience with the Mutag BioChip™, during which time it was in some cases possible to operate systems in parallel in order to compare Mutag BioChip™s vs. "conventional carriers". Unfortunately, not all operational results can be listed at this point, as this would understandably exceed the scope of this article. However, on the basis of the selected case examples, it is possible to meaningfully document the efficiency of the Mutag BioChip™. We consider it important to point out that the results listed here are of a fundamental nature, which enables them to be applied to other types of sewage water and applications.

In relation to the direct performance comparison, the extension of a high-load stage provided valuable results for treating the sewage water of a paper mill. In this case, the central task is to increase the system capacity from 25,000 kg COD/d to 50,000 kg COD/d, and at the same time to maintain paper production throughout the construction work. For this reason, the following procedure was chosen: Initially, the existing high-load reactor filled with conventional carrier continued in operation, with a second similar tank being set up in parallel. Following completion of the mechanical equipment (Figures 6 and 7), around 7% of the old reactor's carrier volume was put into the new high-load reactor in the form of Mutag BioChip™s for the purpose of initial orientation, after which the same volume of sewage water was fed to both high-load stages. On the basis of the positive findings here, the BioChip volume was increased in a second step to 11 vol. % of the carrier that is otherwise required. Figure 8 shows the results that were then obtained. As is clearly apparent, the Mutag BioChip™ reactor then attained the same degradation efficiency as the old reactor, which meant that it was not necessary to increase the BioChip volume further. The almost tenfold increase in the degradation efficiency of the Mutag-BioChip™ in direct comparison with the conventional carrier was clearly and impressively proven.

Based on these findings and the stable operating results of the new Mutag BioChip™ high-load stage, the old reactor

was put out of operation and converted. Both stages are now equipped with the Mutag BioChip™ technology, and reliably deliver the required effluent values. With regard to the scale of the entire procedure, it is worth mentioning for the sake of completeness that in future, at least 1,000 m³/h of sewage water will be treated here, and that a performance increase of the low-rate activated sludge biology is also definitely planned.

Figure 6: Mutag BioChip™ high-load aeration system

Figure 7: Mutag BioChip™ high-load reactor in operation

Figure 8: COD degradation reactor (old) and Mutag BioChip™ reactor

As a second example and further evidence of the efficiency of the Mutag BioChip™ for nitrogen elimination also, its use in the nitrification stage for treating coking plant sewage water is described here. These are regarded not only as difficult to treat - in our experience they can be cleaned only with multiple biological stages. Particular demands are placed on the transformation rates here, and this applies specifically with regard to the reactor sizes that can be installed and controlled. Such plants with Mutag BioChip™s have been in continuous operation for more than two years. The largest have a nitrification capacity of around 100,000 population equivalent (PE) and 55,000 PE. The chip's superiority is apparent here also. Degradation rates of 4-5 kg NH4-N per m³ of carrier volume are constantly attained. And this is despite the fact that the Mutag reactors are smaller by a factor of 5 than the activated sludge tanks that are otherwise required.

3. Summary and outlook

The Mutag BioChip™ has proved to be very adaptable as far as its use in a variety of media is concerned. This applies equally to the elimination of organic compounds (measured as CSB) and nitrogen compounds (e.g. ammonium).

The properties addressed here and the established operational results of the Mutag BioChip™ alone illustrate the superiority of this carrier compared with its conventional competitors. This applies equally to the associated system components (aeration, retention device), which optimally support the special advantages of the BioChip.

It goes without saying that as early as in the planning stages, the future-orientated provision of capacity reserves for sewage water treatment had been decided upon for the projects presented here, and the central task was for this to be achieved without structural modifications and "only" by replenishing the carrier as necessary. In terms of the process, there are limits here that in the first approximation can be reduced to the maximum possible carrier filling ratio. It is thus easy to understand that with the Mutag BioChip™ system, it is possible to achieve an almost tenfold increase in the extension reserve compared with conventional systems.

This is sure to be particularly good news for owners of existing plants: They are often faced with the problem that operational extensions are approved only if the pollutant load remains unchanged. By using the Mutag BioChip™ system, these plants can be upgraded relatively easily, quickly and economically. This is true even if they are a long way away, because the transport costs for the carrier are lower than usual by a factor of 10.

More information is available on the Internet at http://www.mutag-biochip.com

UBM

Organiser Official Supporter

For further information, please contact:UBM Asia Trade Fairs Pte Ltd (Reg. No. 199401769K)3 Pickering Street #02-48 China Square Central Singapore 048660Tel: +65 6592 0890 Fax: +65 6438 6090 Email: [email protected] Contact: Ms Gwen Ng

www.asianpapershow.com

The Premier Pulp, Paper & Board Event for Asia

Incorporating:

• New Production Technology ShowExhibition of Equipment, Machinery,Chemicals, Services and Supplies forPulp, Paper and Board Production.

• Paper Products and Office Supplies FairExhibition of the Complete Range of Office Supplies, Paper and Board Products.

• Senior Management SymposiumAsia’s Top Management Meeting for the Pulp, Paper and Board Businesses.

• New Applied Technology ConferencePresenting the Latest Technical Developments and Solutions for Pulpand Paper Production.

16-18 JUNE 2010NEW SHOW DATES

16-18 JUNE 2010Queen Sirikit National Convention Center

Pre-register today atwww.asianpapershow.com

Admission is strictly for trade visitors only.Minors under age of 16 are not permitted entry to the exhibition

Opening Hours:16-17 June 2010 : 1000hrs - 1800hrs

18 June 2010 : 1000hrs - 1700hrs

Nautilus® SuperWhite CO2 Neutral is a 100% recycled paper that provides customers with the option to offset the CO2 emissions produced in the manufacturing process. In accordance with the standards established by the Confederation of European Paper Producers’ (CEPI), Mondi voluntarily calculated the product carbon footprint of Nautilus® SuperWhite.

Since the stipulated administration of the Kyoto Protocol in 2005, emission offsetting has gained in prominence as a measure to counteract global warming. Countries apply both voluntary and obligatory market-based mechanisms to meet their national CO2 targets. Mondi has recently calculated the product carbon footprint of Nautilus® SuperWhite and subsequently introduced Nautilus® SuperWhite CO2 Neutral paper. These are some of the latest voluntary measures undertaken by Mondi in its commitment to develop sustainable products and maintain a transparent environmental performance.

The Nautilus® brand of 100% recycled papers is already one of Mondi’s most environmentally

friendly products in the eco-focused Green Range portfolio. Nonetheless, the introduction of Nautilus® CO2 SuperWhite offers an additional “green” option to offset the CO2 emissions that are an unavoidable part of the

Mondi balanemiss

by introducinSuperW

CO2 Neut

production process. By opting to purchase Nautilus® SuperWhite CO2 Neutral, the consumer participates in reducing the carbon footprint created in the production of Nautilus® SuperWhite without any compromise to the paper’s high quality.

Mondi invests in highly accredited emission-reduction programmes (e.g. wind parks and composting), which offset the CO2 emitted during manufacturing. With emission-balancing products like Nautilus® SuperWhite CO2 Neutral, consumers can take a more proactive role in reducing CO2 emissions overall and countering the deleterious effects of climate change.

In reference to the recent introduction of Mondi’s �� Marketing and Sales Director of Mondi Uncoated Fine Paper said, “The market is becoming �� so. By introducing products that neutralize or balance CO2 emissions, we are not only responding to customer demands but we are also acting according to our environmental and social responsibilities as a global producer of paper and packaging.”

According to Uwe Fölster, Mondi’s Group Head of Sustainable Development, the product carbon footprint calculation is a further step to assess the impact of production in terms of emissions to air. Mondi’s adherence to CEPI’s 10 toes standard for carbon footprint calculation was applied to a total of 24 products, including Nautilus® SuperWhite. The 10 toes represent key phases in the lifecycle of paper and board.

The 10 toes are:1. Carbon sequestration in forest2. Carbon stored in forest products3. Greenhouse gas emissions from forest product manufacturing facilities4. Greenhouse gas emissions associated with �� 5. Greenhouse gas emissions associated with producing other raw materials/fuels6. Greenhouse gas emissions associated with purchased electricity, steam, heat, and hot and cold water7. Transport-related greenhouse gas emissions8. Emissions associated with product use9. Emissions associated with product end-of-life10. Avoided emissions

Using this framework, Mondi presented a standardized, concise statement detailing the environmental impact of Nautilus® SuperWhite.All Nautilus® papers bear the EU Flower �� production is less harmful than that of other comparable products. Nautilus® SuperWhite ��guaranteeing that the product is made of 100% recycled material.

��!��"��#��$��eco-label for recycled products. Moreover Nautilus® is produced in the Mondi Neusiedler ��$��"��&�'��$��renowned for its high quality products and has an excellent track record in terms of environmental protection. Mondi Neusiedler is working with an environmental management and audit system ��(�)�*+;;*<=;;+��$&

nces product sions ng Nautilus® White tral paper

PULP & PAPER

RESPONSIBLE

TANK CLEANING

As leaders in the global supply of equipment which uses water and chemicals to clean tanks across a wide variety of industries we know some of the pressures facing the manufacture of pulp and paper. The large volumes of water consumed and effluent discharged requires an optimal approach to cleaning. At Scanjet Systems we call this responsible tank cleaning. This means we don’t just supply you with equipment to clean your tanks to the highest standard and in the shortest time, instead we take care to find a technical solution that will use the lowest volume of water and chemicals, that will enable maximum recycling of cleaning waters and that will release the lowest volume and concentration of effluent. We know how important it is for your process to be efficient and environmentally responsible and we appreciate water is a scarce resource. In our team we carry microbiologists, engineers and utilities specialists from the process industries who have the most experience in providing answers to your tank cleaning challenges. With offices based in the US, Europe and Asia Pacific we have additionally developed sales partners with specific pulp and paper industry expertise. Scanjet Systems is the global supplier but with locally placed partners .

OUR CONCEPT

– RESPONSIBLE TANK CLEANING

Scanjet Systems holds the largest range of tank cleaning machines for pulp and paper applications. Decisions on whether to supply internal or external gearing, electric, mechanical or air driven, single or multi nozzle will depend on the specific vessel application. In all cases machine reliability is paramount to cope with the intensive environment. In this respect the Scanjet experience of supplying tens of thousands into the marine/shipping market instils confidence since this is a mobile industry which operates globally with few people on board.

SCANJET SYSTEMS BENEFITS

REDUCING WATER USE

REDUCING MICROBIOLOGICAL LEVELS

IMPROVING RECYCLED PAPER PRODUCTION

INCREASING PERSONNEL SAFETY

The SC 40RT is a dual or four nozzle externally driven automated tank cleaning machine constructed of 316 stainless steel and other highly corrosion resistant materials. It employs a patented magnetic drive transmission thus reducing the need for costly seal replacements and potential failures when used in hazardous environments. The drive mechanism and other major components are external to the tank, resulting in easy maintenance and a high level of safety when the cleaning of hazadous products are

required.

TYPICAL APPLICATIONS

Ethanol fermenters Crude oil storage tanks Gasoline storage tanks

High density stock chest Large silos & dryers

Over-the-road tankers & railcars Reactors

Large Uni-Tanks

The SC 15TW is a 1.5” dual or four nozzle automated tank cleaning machine constructed of 316 stain-less steel and other highly corrosion resistant materials. It has a fixed to moving gear ratio of 47 to 49 allow-ing it to produce a homogenous 360deg pattern that is superior to that of any other rotating jet head in it’s class. It is an integrated turbine class type of tank cleaning machine and employs an adjustable turbine and flow through gearbox. The adjustable turbine allows the rota-

tion speed to be adjusted.


Road and Rail tanker cleaning Portable cleaning for contractors

Fermenter tank cleaning Storage tank cleaning

Wine storage tanks & fermenters Brewery storage tanks & fermenters

SC 15TW

The SC 30T is a single nozzle mechanically programmable auto-mated tank cleaning machine constructed of 316 stainless steel and other highly corrosion resistant materials. It allows the operator to wash the tank in a full 360deg mode or to set the nozzle angle to wash the tank within a particular section. It also employs a patented magnetic drive transmission. The drive mechanism and other major components are external to the tank, resulting in easy maintenance

and a high level of safety.


Ethanol fermenters Crude oil storage tanks Gasoline storage tanks

High density stock chest Large silos & dryers

Over-the-road tankers & railcars Reactors

Large Uni-Tanks

SC 30T

RELEVANT PRODUCTS

www.scanjetsystems.com

SC 40RT

Food contact: Self-regulation for paper industry The Confederation of European Paper Industries (CEPI) and the International Confederation of paper and board Converters in Europe (CITPA) have launched today the voluntary ‘Industry Guideline for the Compliance of Paper& Board Materials and Articles for Food Contact’.The Guideline, which has been independently peer reviewed by PIRA International, offers route to compliance with EC Framework regulation 1935/2004, which covers all materials and articles which come in contact with food. It gives guidance to paper and board producers as well as institutions and public authorities in how to ensure that paper and board meets the quality standards appropriate to its intended use in food contact. This means it will not endanger human health by causing an unacceptable change in the food’s composition or deterioration in the way the food tastes, looks, feels and smells. The health and safety implications of food contact are taken very seriously by the paper industry. When it comes to consumer protection, the sector has cooperated at national government and EU level for many years.

Many of the materials which come into direct contact with food, such as cellulose film, plastics and ceramics, are subject to material-specific measures which apply uniformly throughout the EU. For paper, on the other hand, the picture is fragmented, with countries such as Germany, France, the Netherlands and Italy, having national legislation, while other countries simply conform with the more general, non-material specific regulation 1935/2004. The unintended impression given to buyers is that compliance for paper and board is less clear than for other materials.

So it is against this background that the European paper packaging value chain has compiled the voluntary Industry Guideline for the Compliance of Paper & Board Materials and Articles for Food Contact (the Guideline). CEPI will also publish a Good Manufacturing Practice (GMP) for the industry. Put simply, the Guideline spells out the rules, and the GMP describes a management system for those rules to be obeyed. GMP is not an optional bolt-on to the Guideline, but is required by Regulation 2023/2006, a general GMP requirement recently published by the European Commission. “The Guideline offers, in the absence of a specific measure, the alternative of self-regulation. There is now a period of opportunity during which the paper-based packaging chain can show that its own guidelines can deliver”, explains Jori Ringman, CEPI Recycling and Product Director.

Food Contact guidelines:www.cepi.org/publications

Peer Review: http://www.cepi.org/content/default.asp?PageID=558&DocID=27381

For more information, please contact Daniela Haiduc CEPI Public Affairs and Communications Manager at [email protected] or +32 2627 4915

pulp-paperworld magazine issue 1

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Transcript of pulp-paperworld magazine issue 1