Agricultural covering multilayer film or sheet structure and met

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component

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428501, 428518, 428520, 428522, 428524, 521136, 521143, 525154, B32B 518, B32B 2742

Patent

active

042140340

ABSTRACT:
A covering multilayer film or sheet structure for agricultural application, which consists essentially of:
(1) a film or sheet of a resin composition comprising (A) 100 parts by weight of a thermoplastic resin selected from the group consisting of olefinic resins and vinyl chloride resins and (B) about 1 to about 40 parts by weight of an acetal resin,
and
(2) a layer of the thermoplastic resin (A) laminated to at least one surface of the film or sheet (1); and a method for maintaining an agricultural locus at temperatures suitable for the growth of plants, using aforesaid covering multilayer film or sheet.

REFERENCES:
patent: 3250823 (1966-05-01), Zeitlin
patent: 3306877 (1967-02-01), Schott
patent: 3476832 (1969-11-01), Pritchard
patent: 3635876 (1972-01-01), Chameroy
patent: 3980734 (1976-09-01), Burg
Lashman "Foaming Agents for Polyolefins," SPE Journal, Sep. 1962, pp. 1184-1193.

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