MANUFACTURE METHOD FOR SEALABLE PLASTIC FILM AND HEAT-SEALABLE PLASTIC PART

    公开(公告)号:JPH03216334A

    公开(公告)日:1991-09-24

    申请号:JP17283690

    申请日:1990-07-02

    Applicant: BASF AG

    Inventor: HERUMUUTO IENNE

    Abstract: PURPOSE: To enhance a working range and hence working certainty by specifying total sum of weights of a layer made of a heat-sealable impact resistant polystyrene, a carrier layer and a plastic layer having a high melting point. CONSTITUTION: The heat-sealable plastic film comprises three layers A, B, C manufactured by a co-extrusion method or laminating or at least two layers A and C or in some cases and another layer of an adhesive aid D to guarantee bonding of the two layers of at least layers A, B and C. In this case, a total sum of the A and in some cases B and C is 100 with respect to thickness and weight. The sealable plastic film having 1 to 50% of layer of heat-sealable impact resistant polystyrene A, up to 95% of the carrier layer B and 1 to 99% of the plastic layer C having a high melting point is formed. Coating of the layer C is executed during an operating step of manufacturing the sealable plastic film by laminating or a co-extrusion method.

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