NOW WE

HAVE IT ALLHOW SO?

by EOC

WE EXPAND

A FULL RANGE OF

POLYURETHANE

SYSTEMS

EOC

• Mastered the art of making the perfect compound

• Excels at producing high performance latex

• Pioneered with superior hot melt coating

but we want to do even better, reach further and offer more

OUR ANSWER? A NEW BRAND!

POLYURETHANE SYSTEMS

Is the EOC brand name for all systems based on polyurethane

For use in artifical turf we have developed

• for artificial turf pre-coat

ATP

• for artificial turf foam-coat

ATF

WHY SHOULD I

EVEN CONSIDER POLYURETHANE

GRASS BACKING?

by EOC

GRASS BACKING

POLYURETHANE SYSTEMS

Why use a polyurethane grass backing?

• to excellerate production processing with a factor 2 up to 3

• to lower energy consumption with a factor up to 10

• to improve economical production performance and yarn

consumption

• to profit from high flexibility of product properties

• to improve production sustainability

• to produce high performance artificial turf at substantial

lower weight

SOUNDS GOOD!

BUT WHAT ABOUT MY EXISTING EQUIPMENT?

by EOC

EQUIPMENT

POLYURETHANE SYSTEMS

Yes, there is an investment involved but:

• the existing coating line and oven can be used

• you will get high end support from EOC

• and the same equipment can be used for pre-coat,

foam-coat and shockpad.

Count on an investment in

• a seperate PU dosing system

• a filler blending system

SO,

TELL ME MORE ABOUT THE PRE-COAT!

ATP

EXOPUR ATP

POLYURETHANE SYSTEMS

3 COMPONENT SYSTEM

• EXOPUROL ATP 1000 SERIES

polyol blend system (filled or unfilled)

• EXOPURANE ATP 2000 SERIES

isocyanate blend system

• EXOPURACT ATP 3000 SERIES

activator blend system and color

A reactive system that cures and prepolymerises as

soon as the components are mixed together and

heated.

EXOPUR ATP

POLYURETHANE SYSTEMS

POLYOLBLEND

IN IBC OR

STORAGE TANK

CaCO3

IN BIG

BAG OR SILO

ZEOLITE IN BIG

BAG OR PASTE

FILLER

BLENDING

SYSTEM

FILLED

POLYOLBLEND

IN IBC, STORAGE

OR DAYTANK

• Mix liquid polyolblend with solid

powder

• Discontinuous in blend tanks

• Continuous during production

Filler Blending System

EXOPUR ATP

POLYURETHANE SYSTEMS

POLYOLBLEND

IN IBC, STORAGE

OR DAY TANK

PU + AIR DOSING

SYSTEM

• Mix 3 components in the right ratio

• Controlled dosing, mixing, temperature

• Dosing linked to machine speed

• Coating thickness by roll or knife setting

• Short oven/cure at 100°C in 2 – 3 minutes

PU Dosing System

ISOCYANATE

BLEND IN IBC,

STORAGE OR DAY TANK

CATALYST -BLEND

IN IBC OR DAY TANK

COOLED STATIC

MIXER

PU-MIX

EXOPUR ATP

POLYURETHANE SYSTEMS

Advantages of PU pre-coat in production

• Higher production speed (x2, x3) for equal oven length

• PU cures faster than drying a water based system

• PU cures at lower temperatures than temperature

required for drying a water based system

• Evaporating water demands 6 times more energy

• PU-reaction is exothermic and creates heat

• No water vapour to ventilate, no hot air replacement

Savings on yarn consumption of 5% up to 10%

ATP - Pre-coat

• Less coating weight required (500 – 600 g/m²)

• Laydown weight = actual coating weight or dry weight

• High production flexibility

• Adjustable speed by adjustable oven temperature

(80 – 120°C)

• Adjustable speed by adjustable catalyst level

• Adjustable coating stiffness or improved coating

flexibility (by formulation adjustment)

Presentation Peter Spanhove date... meeting

Advantages of PU pre-coat in production

POLYURETHANE SYSTEMS

ATP - Pre-coat

Quality of PU pre-coat finished backing

• More consistent yarn length by moderated temperature

• Lower weight of grass rolls (depends on coating weight)

• Higher flexibility

• High tuft lock with minimum coating weight

• Very good water resistance

• Maintains good strength while wet

• Improved chemical resistance

Presentation Peter Spanhove date... meetingPOLYURETHANE SYSTEMS

ATP - Pre-coat

Energy required as compared to a water based system

• Energy required to evaporate water = +/- 1100kJ/900g/m² dry latex

• Energy required to heat up PU = +/- 110kJ/600g/m² PU

• Continuous exhaust of water vapour required in case of a water based system

• Exhausted humid air must be replaced by dry hot air (lot of energy loss)

• Very limited exhaust required with PU-system, only maintaining of oven heat is required. Mainly internal oven ventilation required.

• Oven temp latex 130°C – 160°C >< oven temp PU 100°C - 110°C

• Exothermic PU reaction releases heat!

• Exhaust system can be strongly reduced (adapt oven)

• Energy reduction can be reduced by factor 10!

Presentation Peter Spanhove date... meetingPOLYURETHANE SYSTEMS

ATP - Pre-coat

Substantial increase in yarn yield (temperature)

• Assume low heating at yarn side (< 60°C)

• Assume heating at backing side at different temperatures

– Yarn shrinkage at 140°C = +/- 15%

– Yarn shrinkage at 130°C = +/- 8%

– Yarn shrinkage at 120°C = +/- 5%

– Yarn shrinkage at 110°C = +/- 1%

Dropping oven temp. from 140°C 110°C resultsin an increased yarn yield up to 15%!!!

Presentation Peter Spanhove date... meetingPOLYURETHANE SYSTEMS

ATP - Pre-coat

Shrink effect of complete yarn at increasing temperature

Presentation Peter Spanhove date... meetingPOLYURETHANE SYSTEMS

ATP - Pre-coat

Shrink effect of yarn at increasing temperature: only at BACKING side

Presentation Peter Spanhove date... meetingPOLYURETHANE SYSTEMS

ATP - Pre-coat

POLYURETHANE CHEMISTRY

• Polymerisation starts immediately after mixing REACTIVE system

• Boosted by raw material temperature and oven temperature

• Boosted by catalyst level

• Correct dosing is important ratio between components must be right

• Important to cool raw materials! Increase pot life!

• Properties can be modified by formulation

Presentation Peter Spanhove date... meetingPOLYURETHANE SYSTEMS

Presentation Peter Spanhove date... meetingPOLYURETHANE SYSTEMS

Are you feeling the Chemistry?

You want to know more?

Contact us at polyurethanes@eocgroup.com