Patent ID: 11920010
Assignee: NAN YA PLASTICS CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B  Y | IPC B  C

Claim 3:
4. A heat-sealable polyester film, comprising: a base layer and a heat-seal layer formed on at least one side surface of the base layer, and the heat-seal layer has a predetermined intrinsic viscosity; wherein a modifier is added to the heat-seal layer, the modifier is configured so that the heat-sealable temperature of the heat-sealable polyester film has a range between 100° C. and 230° C. for heat-sealing, and a physically regenerated polyester resin, a chemically regenerated polyester resin, and the modifier are mixed according to a predetermined intrinsic viscosity, based on a total weight of 100 wt % of the heat-seal layer, a content of the physically regenerated polyester resin is between 50 wt % and 95 wt %, and a content of the chemically regenerated polyester resin is between 1 wt % and 40 wt %.