WELDED BIAXIALLY ORIENTED POLYPROPYLENE FILM WITH THE PROTECTIVE COATING, WHICH IS WELDED WITH PVDC AND THE ACRYLIC LACQUER Russian patent published in 2007 - IPC B32B27/32 B29C55/12 B65B9/00 

FIELD: chemical industry; food-processing industry; other industries; production of the multilayer biaxially oriented polyolefin films.

SUBSTANCE: the invention is pertaining to the process of production of the film materials, in particular, to production of the multilayer biaxially oriented polyolefin film and may be used in chemical industry, food-processing industry, other industries as the packing material. The film consists of the primary layer and at least one protective coating. The indicated protective coating contains as the basic component one copolymer or the terpolymer of olefin and the non-saturated carboxylic acids or their esters, which are welded with polyvinylidene chloride and acrylate lacquers coating and also contain the small amount of the wax. The one side of the film is supplied with polyvinylidene chloride or acrylate coating so, that it may be used as the rolled package. Application of the invention eliminates formation of the deposits on the rollers of the film drawing in the longitudinal direction assembly unit, does not make negative effect on the operational and optical properties of the produced film.

EFFECT: the invention ensures elimination of formation of the deposits on the rollers of the film drawing in the longitudinal direction assembly unit and prevention of the negative effect on the operational and optical properties of the produced film.

28 cl, 11 ex