US Patent 7393592 Lamination grade coextruded heat-sealable film

Patent 7393592 was granted and assigned to ExxonMobil on July, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

ExxonMobil

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7393592

Date of Patent

July 1, 2008

Patent Application Number

10809259

Date Filed

March 25, 2004

Patent Primary Examiner

‌

Sheeba Ahmed

Patent 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.