Method for preparing a film of vinylidene chloride polymer

Details Method for preparing a film of vinylidene chloride polymer Method for preparing a film of vinylidene chloride polymer

1974-04-15

1977-09-13

Wong, Jr., Harry

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

2041592, 264 95, 264173, 428507, 428515, 428518, 428520, C08F 1408

Patent

active

040484289

ABSTRACT:
A film combination including two plies of thermoplastic polymer and therebetween a vinylidene chloride crystalline copolymer film which is substantially devoid of pinholes and scratches and has low oxygen permeability is prepared by coextruding the copolymer as a melt between melts of outer plies of thermoplastic polymer. The film combination may be biaxially oriented or substantially unoriented and may be irradiated with high energy electrons. The film combination can be used for many packaging applications.

REFERENCES:
patent: 2233442 (1941-03-01), Wiley
patent: 2309370 (1943-01-01), Williams
patent: 2332489 (1943-10-01), Reinhardt et al.
patent: 2344511 (1944-03-01), Harder
patent: 2354435 (1944-07-01), Stedman
patent: 2405008 (1946-07-01), Berry
patent: 3821182 (1974-06-01), Baird et al.

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