Patent ID: 6306519
Filing Date: 2001-10-23
Classification: B32B,C08J,C09D,Y10T

Abstract:
A method for producing a vinylidene chloride copolymer film or laminated film having excellent barrier properties, which comprises:applying a coating material produced by:putting, into an organic solvent, powder of a vinylidene chloride copolymer obtained by emulsion copolymerization of 88% to 93% by weight of vinylidene chloride and 12% to 7% by weight of at least one monomer copolymerizable with vinylidene chloride, so that the vinylidene chloride copolymer powder is dissolved in the organic solvent; and thenallowing the resulting solution to stand at a temperature of a gelation temperature +20.degree. C. or less for one hour or more; andsubjecting the applied coating material to heat treatment at from 30.degree. C. to 80.degree. C.