ELASTOMER FILMS WITH FRAGILE NON-STICKING SURFACE LAYERS Russian patent published in 2011 - IPC B32B3/10 B32B25/08 B32B27/34 B32B27/36 B32B27/40 B29C47/06 

FIELD: process engineering.

SUBSTANCE: this invention relates to non-sticking multilayer elastomer film and to method of its production. Proposed film comprises first fragile polymer film layer that may not expand to over 110% of its initial size without breakage or cracking, and second elastomer layer. Said first layer is bonded with first surface of said second elastomer layer. First layer represents polystyrene while second layer is selected from the group comprising block-copolymer of styrene and elastomer of polyolefin. Multilayer may be activated by breaking first fragile polymer layer and imparting elastoplasticity to multilayer film. Film layer that may expand to approx. 150% of its initial size and recover after expansion to not over 120% of its initial size. Proposed method comprises producing non-sticking multilayer film layer and activating non-sticking multilayer film with destruction of fragile polymer film layer along with imparting elastoplasticity to multilayer film.

EFFECT: possibility to roll elastomer film and store without its sticking.

19 cl, 8 dwg, 2 ex