Method of making very high barrier film

Details Method of making very high barrier film Method of making very high barrier film

1991-01-18

1991-07-30

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

15624413, 15624414, 15624424, 264171, 264173, 264178R, 2642093, 2642101, 26421118, 2642112, 2642893, 2642902, 264562, 264564, B29C 4706, B29C 5512, B29C 5528, B32B 3130

Patent

active

050358510

ABSTRACT:
A method of producing an oxygen barrier film, and the resulting film, includes the coextrusion of a multi-layer extrudate having an outside ethylene vinyl alcohol copolymer layer which has been passed through a hot water system to soften and wet the ethylene vinyl alcohol copolymer. The wetted film can be more easily oriented to produce a shrinkable film.

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Iwanami, T. et al., "Ethylene Vinyl Alcohol Resins for Cas-Barrier Material". Tappi Journal, vol. 66, No. 10, (Oct. 1983), pp. 85-90.
Modern Plastics, Nov. 1986, pp. 18, 21, 22 and 93.

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