FIELD: chemistry.
SUBSTANCE: invention relates to polymer films for sealing containers and to a composite film. A composite film for sealing containers by sealing up a container with the composite film or a cover joined with a container on a peripheral sealing surface has a bearing layer made of metal foil and a sealing layer joined to the metal foil. The sealing layer includes a co-extruded layer with a cohesively decomposing middle layer and adhesion booster layers on both sides of the middle layer.
EFFECT: invention enables to produce a composite film which is suitable for sealing on a sealing surface of uncoated tin plate.
10 cl, 4 dwg
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