Agricultural covering multilayer film or sheet structure and method for thermal insulation

摘要

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.