FIELD: process engineering.
SUBSTANCE: invention relates to separation films used as separable protective or cover films for adhesive tapes, self-adhesive labels, self-adhesive roofing paperboard or self-adhesive asphalt-cardboard. Separation film has at least one ply with closed cellular structure based on at least one thermoplastic olefin homo- or copolymer. Cellular structure is composed of hollow micro particles with volume increased owing to at least one volatile organic compound contained therein, their diameter varying from 30 to 300 mcm. At least one of film surfaces is provided with anti-adhesion ply as an outer ply based on at least one solidified polysiloxane. Note here that said thermoplastic olefin homo- or copolymer features fusion point lower than that of thermoplastic polymer wherefrom hollow micro particle wall is composed.
EFFECT: better anti-adhesion properties.
17 cl, 4 tbl, 3 ex
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