DIRECTLY ATTACHING, HALOGEN-FREE, FAST-DRYING, HEAT-SEALING BINDER FOR SEALING POLYESTER FILMS TO POLYSTYRENE, POLYESTER OR PVC

摘要

The present invention encompasses a one-pack binder for heat-seal applications, useful for sealing polyester films, especially polyethylene terephthalate (PET) films, to polystyrene, PVC and polyester receptacles. Said polyesters may in particular be polyethylene terephthalate (PET) or polylactic acid (PLA). The binders here are particularly notable not only for good seal strengths but also for high transparency and excellent application qualities. A key aspect of the invention is the facility to seal without adding adhesion promoters, especially polyester- or polyvinyl chloride (PVC)-based adhesion promoters, while attaining, with respect to PS and PET receptacles, barrier and seal properties that at least match and sometimes exceed those of existing heat-seal systems available on the market.