Post on 06-May-2015
description
TE 362 PRINTING TECHNOLOGY YARN AND CARPET PRINTING
Group 5
Submitted by : FURKAN KETENCİ
AYBALA ÖZCAN
ŞİLAN BOZKUR
BARAN BOZKUR
04.05.2012
Submitted to : Ass.Prof.Mehmet DASDEMIR
INTRODUCTION
• This project includes processes, techniques and datas of yarn and carpet printing technologies.
• First part of the project includes yarn printing techniques and their compares between each other.
• Second part of the project includes carpet printing techniques,used chemicals and processess.
YARN PRINTING
• Yarn printing is the special type of printing process.
• Yarns are dyed in package form or hank form by yarn dyeing process.
• It is slighlty difference from woven or knit printing for the purpose of producing certain decorative patterns in weaving.
• Extruded synthetic yarn from a colored solution; the filament is impregnated with pigment.
Solution Dyed Yarn
• Carpet yarns are wound onto a skein or put as a cone into a kind of dye beck.
Hang,Skein or Package Dyeing
• Process whereby different colors are “printed” along the length of the yarn before it is manufactured into carpet.
Space Dyeing
Yarn Dyeing Types and Properties
Process
Yarn Dyeing Types and Properties
Space Dyeing• Space dyed carpet is a yarn dyeing
process in which different colors are applied along a length of yarn at intervals.
• Space dyed yarn produces, in its subsequent tufted fabric form, an effect of random,unorganized design and multi-colored.
• Space dyed yarn is sometimes referred to as dip dyed yarn.
Space Dyeing
• Spaced dyed yarn is most commonly used for knitting and crocheting.
• When space dyed yarn is made to make a knitted or crocheted item, the resulting project features uneven horizontal stripes that produce a collage-like effect.
• Two space printing methods are available which are knit-de-knit and warp printing methods.
Types of Space Printing Process LineKnit-de-knit
Printing
Dyeing & Printing
Steaming
Washing Extracting
Drying
Warp Printing
Dyeing & Printing
Warping
Tufting
Steaming
Washing
Drying
Multi Colored Yarn Dyeing• The secret to space dyeing
yarn involves the use of a special chemical called a mordant.
• The purpose of a mordant is to help permanently fix the dye to the yarn after the space dyeing. This makes it possible to dye the same skein of yarn many different colors.
Multi Colored Yarn Dyeing System Properties• Cylindrical machines, the printing system has felt and
mechanical shears.
• Dye transfer printing process rollers and felt each other through the cylinder pressure is performed.
• Mechanical pressure system and synchronized with
scissors quiet study have been provided with the pattern of change during the time loss is prevented.
yarn printing machine - YouTube.flv
CARPET PRINTING
• The initial development of the printing of carpet in the UK after the introduction of tufted carpet production, which followed the in the USA from the early 1950s on wards.
Methods of carpet printing
Direct printing
Discharge printing
Resist printing
Pigment printing
Methods of carpet printing
Direct printing
Discharge printing
Resist printing
Pigment printing
1-Direct Printing
• Direct printing is a white fabric or directly on the pre-dyed fabric printing. The latter is called overprinting.
• The complete pattern including the base color.
• In screen printing the base color can also be applied with a padder.
Direct Printing
Advantage
Simple method
Disadvantage
In screen printing only dark colors on light shade
Process of Chromojet Direct Printing
Padder - for pre wetting of high pile carpetGum Applicator for shading effectsDye Applicator for the base colorPrinting Machines for accent colors and designs
Padder
Chromojet Direct Printing Machine
Methods of carpet printing
Direct printing
Discharge printing
Resist printing
Pigment printing
2-Discharge Printing
• Discharge printing is characterized by a dark ground shade highlighted by light and bright printed.
• This makes the carpet look more attractive.
• The condition for performing the displacement technique is the use of dyestuffs with different affinity to polyamide and cationic resist agent.
Discharge Printing Methods:
• Discharge printing can be done in two ways:
• the fabric piece dyed color• Using a padder for the ground
shade and printer to overprint1st way
• the pattern printed on the fabric.• Printing the spot colors and over
dyeing with a dye applicator after printing. This is the common method.
2nd way
Discharge Printing
• Discharge printing is common with screen printing to overcome the problem of low penetration of printed colors.
Advantage
High penetration value
Disadvantage
High water usage
Schematic Representation Of Discharge Printing
Methods of carpet printing
Direct printing
Displacement printing
Resist printing
Pigment printing
3-Resist Printing
• Resist printing ,including a two-stage process
• printed on white fabric can stop or prevent dye penetration into the fabric of chemical agents or waxy resin.
1st Step
• piece-dyed fabrics. Its purpose is to dye the white background to bring out the pattern.2nd Step
Quick Change of Resist Printing • The advantage of this process is that printing can be
done in large runs and the base colour can be done at a later stage in short runs by winch or continuous using an overflow applicator ( Quick Change).
Best definition of color separation of prints
Advantage
Long process, high cost
Disadvantage
Methods of carpet printing
Direct printing
Displacement printing
Resist printing
Pigment printing
4-Pigment Printing• Paint pigment printing is direct printing, the printing
process is often called dry method, as distinct from wet printing.
• Pigment printing is the printing production of the most inexpensive way of printing.
• The printing is relatively simple because the coating, the process required at least, usually does not require steaming and washing
PRINTING MACHINES
• Nowadays,printing industry develops rapidly and new technology adds new equipments and systems on this printing machines.
• Here are the most commonly used carpet printing machines in textile industry ;
-flat-screen printing machine -rotary-screen printing machine -spray and jet printing machines
Flat-Screen Printing MachineFlat-screen printing machines can be manual, semi-automatic or completely automatic. One type of machine, which is still commonly found in printing houses, can be described as follows. The fabric is first glued to a moving endless belt. A stationary screen at the front of the machine, is lowered onto the area that has to be printed and the printing paste is wiped with a squeegee.
Flat-Screen Printing Machine Process
The printed fabric moves forward step by step and passes through a dryer. The machine prints only one color at a time. When the first color is printed on the whole length of the fabric, the dried fabric is ready for the second cycle and so on until the pattern is completed.
Rotary Screen Printing Machine
ROTARY SCREENS
PRINT PASTE SUPPLY
PRINTED CARPET
PASTE FEEDING MECHANISM
A combination of roller and screen printing in which a perforated cylindrical screen isused to apply color. Color is forced from the interior of the screen onto the cloth.
Schematic Figure Of Rotary Screen Printing Machine
Spray and Jet Printing Machines
• Jet printing is a non-contact application system originally developed for printing carpets.
• This system can be likened to an injection dyeing process.
• Spray printing systems and first generation jet printing methods cannot be controlled to produce a pre-specified pattern.
Jet Printing Machine
Process of Jet Printing
Chemicals For Carpet Printing
Antifoams to avoid foaming
Penetration and Leveling Agents to control pH variations
Resist Chemicals for resist printing
Preservation Chemicals to avoid bacteria and fungus
Acid Donors to achieve a lower pH
Retarding Chemicals to avoid that the dye is fixed
Chemicals For Carpet Printing
Dispersing and Leveling Agents affinity to fiber, affinity to dyestuff
Wetting Agents to improve penetration of prints
Anti-frosting Agents to avoid frosting
Carriers for disperse dyeing of Polyester carpets
Flame Retardants or Other Finishing Products
to avoid combustibility of fabric
Foaming Agents for foam finishes
CONCLUSION
• In this project,we explain carpet and yarn printing technology;
Yarn printing methods and typesCarpet printing methods,machines and chemical
agents• We support the our presentation with multimedia
and schematic figures and photos.• Nowadays,carpet printing does not widely use in
our country because of inadequate printing suppliers in textile industry.
REFERENCES
1- http://www.floorbiz.com/carpet/carpet-buying-guide/dye-methods/space-dyeing.html
2- http://www.wisegeek.com/what-is-space-dyeing.html3- http://www.floorpromotion.se/en/technology.html4- http://chinalogomats.com/Article/119.html5- http://www.zimmer-austria.com J.Zimmer Maschinanbau
GmbH Kufstein6- http://www.ineris.fr/ippc/sites/default/interactive/bref_text/
breftext/anglais/bref/BREF_tex_gb10.html
THANKS FOR YOUR
ATTENTION