LAMINATE FILM FOR WRAPPING

摘要

A laminate film for wrapping comprises a layer (A) of an ethylene- alpha -olefin copolymer having a coefficient of variation of composition distribution (Cx) represented by the equation below of 0.40 or less and having an ethylene content of 50 mol% or more and at least one layer of a different kind; <MATH> wherein sigma is a standard deviation of composition distribution (1/1000C), and SCBave is an average of the number of short chain branchings per 1000C (1/1000C). The production of the copolymer is described, and copolymers of ethylene or propylene and an alpha -olefin or of propylene and ethylene which are suitable as the different kind of layer. The film is safe and hygienic, has low odor and excellent in transparency, mechanical strength, softness, and low-temperature heat sealing properties and is therefore suitable to automatic wrapping, particularly stretch-wrapping.