FIELD: transport, package.
SUBSTANCE: invention relates to heat-sealable multilayer film suitable for thermoforming. Proposed multilayer film laminar structure arranged on both surfaces of two-layer central inner layer with sequence of layers arranged in symmetry relative thereto. Multilayer film features thermosetting ability in crosswise and lengthwise directions amounting to 20% at 93°C and not affected by thermoforming. Aforesaid central two-layer inner layer is built around, at least, one thermoplastic polymer with Vicat softening temperature not exceeding 65°C as measured in compliance with standard ASTM D 1525-ISO 306.
EFFECT: higher mechanical strength not affecting thermosetting ability.
32 cl, 9 dwg, 1 tbl, 1 ex
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