Lamination grade coextruded heat-sealable film

Details Lamination grade coextruded heat-sealable film Lamination grade coextruded heat-sealable film

2008-07-01

2008-07-01

Ahmed, Sheeba (Department: 1794)

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

C428S220000, C428S323000, C428S327000, C428S332000, C428S515000, C428S446000, C428S447000, C428S923000, C428S926000

Reexamination Certificate

active

07393592

ABSTRACT:
A coextruded, heat-sealable film structure includes a core layer of a thermoplastic polymer having a first side and a second side. A functional layer which is printable, sealable, or can be laminated or is treatable for printing, sealing, or laminating is on the first side of the core layer. A heat-sealable layer is on the second side of the core layer. The heat-sealable layer is composed of a thermoplastic polymer and an amount of a slip system, based upon the entire weight of the heat-sealable layer, sufficient to reduce the coefficient of friction and improve the slip performance of the film structure. The slip system is composed of a silicone gum and at least one antiblocking agent. The film structure exhibits the desirable combination of improved converting performance and excellent machinability performance.

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