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US 5,382,391 AGranted
Method for producing transferable modifier-containing film
AssigneeViskase Corporation
InventorsRoger L. Juhl, Stanley Lustig, Donatas Tijunelis
Life of this patent
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Abstract
A method for producing an extruded film article such as a bag, which is a blend of a thermoplastic polymer such as ethylene vinyl acetate and an olefinic oxide polymer such as poly(ethylene oxide), with a modifier such as liquid smoke absorbed in the blend. The modifier is transferable from the film to a receiving surface such as a food body in fluid transfer relationship with the film.
Claims19
A method for making a modifier transferable film article comprising the steps of:
- a) providing a resin blend comprising a thermoplastic polymer and a poly(ethylene oxide) comprising between about 15 and 40 wt. % of said blend and having a weight average molecular weight of at least about 70,000 and less than 300,000,
- b) extruding said resin blend into a film, and
- c) contacting a modifier with the extruded film, to produce a film having said modifier absorbed therein.
Dependencies are inferred from the claim text.