Carrier film backed with composite film

Details Carrier film backed with composite film Carrier film backed with composite film

1983-10-24

1986-07-22

Buffalow, Edith

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428349, 428516, 428520, B27N 502

Patent

active

046019308

ABSTRACT:
A mutilayer film, as shown in FIG. 3, consists of a support film (6) and a blown, coextruded composite film (1), which is joined to the support films (6) by means of an adhesive (5) and is interlocked into a tube (1'). The layers of the composite film (1) consist of polyethylenes or polyethylene copolymers of different mechanical shock resistance. At least one of the polyethylenes or polyethylene copolymers has a mechanical shock resistance of more than 100 cN. The composite film (1), interlocked into a tube (1'), has two outer layers (A, A') of corresponding material and thickness and two inner layers, (B, B') of corresponding material thickness. The inner layers (B, B') are connected by interlocking and the outer layers (A, A') are connected to the inner layers (B, B') by melt bonding.

REFERENCES:
patent: 3625348 (1971-12-01), Berea
patent: 3949042 (1976-04-01), Utz
patent: 4178401 (1979-12-01), Weinberg et al.
patent: 4226822 (1980-10-01), Yoshikawa et al.
patent: 4279957 (1981-07-01), Hiraoka et al.
patent: 4424243 (1984-01-01), Nishimoto et al.
patent: 4424256 (1984-01-01), Christensen et al.
patent: 4450028 (1984-05-01), Vilutis

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