POLYMER FILM CONTAINING AMORPHOUS POLYAMIDE AND PARTIALLY CRYSTALLINE POLYAMIDE Russian patent published in 2020 - IPC C08J5/18 B32B27/34 B32B27/08 C08L77/02 

FIELD: manufacturing technology; technological processes.

SUBSTANCE: invention relates to a polymer film (P) comprising a polyamide composition (PZ), which comprises an amorphous polyamide (A) and a partially crystalline polyamide (B), as well as to a method of producing a polymer film (P) and a method of packing food products by means of a polymer film (P). Polymer film (P) contains a polyamide composition (PZ), which includes (A) at least one amorphous polyamide, obtained by polymerising (A1) at least one dicarboxylic acid and (A2) at least one diamine, and at least one partially crystalline polyamide, wherein component (A1) contains isophthalic acid, and component (A2) contains 2-methyl-1,5-diaminopentane.

EFFECT: invention provides polymer films having low oxygen permeability, including at high air humidity and high temperatures, high tensile strength and bending strength, as well as low tendency to wrinkles during production and insignificant migration of monomers.

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