Best in-class Oxygen gas barrier coating
thanks to PUD TAKELAC™ WPB-341

	Resin: TAKELAC™ WPB-341 Application: Food packaging films, industrial films (solar back sheet), rust prevention on metals
Key Benefits Excellent Oxygen gas barrier even at high humidity condition Non-chlorine polymer (environmentally friendly) High flexibility and good adhesion with various films and plastics Good printing ability and lamination workability

When producing packaging or industrial coatings it is very important to ensure the best resistance to humidity in order to maintain the final end product quality and aesthetic.

TAKELAC™ WPB-341, a water-based gas barrier PUD, has been developed to help film manufacturers to provide barrier films to converters.

This performance resin gives higher attributes to coatings, especially superior gas barrier properties and same level of permeability even in humid environment.

Superior gas barrier property

Figure 1: TAKELAC™ WPB-341 humidity dependence on O₂ barrier property is excellent
compared to PVA and EVOH

Application 1: Over coating of Metalized layer

OTR (cc/m2.day.atm, at 20°C) 50%RH 80%RH Bench mark (only#12PET) 110 100 WPB-341 /#12PET 15-17 30-33	Gas barrier O2 cc/m2.day 20°C, 80RH% H2O g/m2.day 40°C, 90RH% Uncoating 1~3 1~2 WPB-341 Coating <0.5 <0.5
Figure 2: Barrier performances are enhanced thanks to TAKELAC™ WPB-341

Application 2: PVA/OPP Film

Parts by weight PVA 3-7 Ion Exchange Water 100