OPAQUE THERMO-SHRINKING FILM Russian patent published in 2020 - IPC B32B27/08 B32B27/30 B32B27/32 B32B1/08 B32B3/26 B32B27/20 

FIELD: packaging industry.

SUBSTANCE: group of inventions relates to a shrink film. Described is a thermo-shrinking, uniaxially stretched film consisting of a first polymer layer A, which contains at least one dark pigment, second polymer layer B, which contains at least one white pigment, and optionally, at least one layer of pigment applied on second polymer layer B, wherein first polymer layer A and second polymer layer B, independently of each other, contain one or more polymers which are selected from a group of polyesters, polyolefins, polystyrenes and polyvinyl halides, in which the film has thickness of 20 to 100 mcm, the ratio of the thickness of the first polymer layer A and the second polymer layer B is in range of 5:95 to 50:50, the transparency of the film is not more than 12 %, and film, after 15 seconds in a water bath at temperature of 95 °C, exhibits stretching in the main stretching direction in range of 20 to 85 %. Also described are sleeve, object and method of thermosetting film production.

EFFECT: improved operational characteristics of the film.

16 cl, 5 tbl