ACRYLIC BEADS FOR ENHANCING MATTE APPEARANCE OF POLYOLEFIN FILMS Russian patent published in 2019 - IPC B32B27/08 B32B27/18 C08J5/18 B29C48/18 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a film comprising a) at least one base layer comprising a thermoplastic polymeric matrix material; and b) a skin layer comprising a thermoplastic polymeric matrix material and from 5 wt% to 80 wt% of polymeric particles having an average particle diameter from 0.5 mcm to 15 mcm, a refractive index from 1.46 to 1.7, and at least 60 mole% of acrylic monomer units, wherein the film is stretched by a factor of 2 to 8 uniaxially or biaxially, and wherein after stretching, the skin layer has a thickness that is between 50 % and 200 % of the diameter of the polymeric particles; and to a method of making the film.

EFFECT: according to the invention, films have increased haze without loss of transparency.

15 cl, 2 tbl