Coextruded film and methods comprising vinylidene chloride methy

Details Coextruded film and methods comprising vinylidene chloride methy Coextruded film and methods comprising vinylidene chloride methy

1989-12-28

1992-02-18

Seidleck, James J.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 366, 428412, 428480, 4284763, 428518, 264171, B32B 2708, B29C 4700

Patent

active

050893084

ABSTRACT:
Vinylidene chloride methyl acrylate copolymer coextruded with second and third different polymeric compositions in fabrication of multiple layer films. The third layer is between the first and second layers. The second composition can have a melting temperature greater than 204.degree. C., and can be, for example, polyester, polyamide, or polycarbonate. Preferred films contain at least five layers, at least one of which has a typical extrusion processing temperature higher than the typical extrusion processing temperature of the VDC-MA. Methods of fabricating such films are also disclosed.

REFERENCES:
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patent: 4379117 (1983-04-01), Baird, Jr. et al.
patent: 4714638 (1987-12-01), Lustig et al.
patent: 4755402 (1988-07-01), Oberle
patent: 4804510 (1989-02-01), Luecke et al.
patent: 4842791 (1989-06-01), Gould et al.
patent: 4868064 (1989-09-01), Grosjean

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