Composite packaging material and process for making same

Details Composite packaging material and process for making same Composite packaging material and process for making same

1984-08-30

1985-11-05

Bell, James J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

15624411, 15624418, 156250, 156279, 428 68, 428 90, 428337, A47K 1314

Patent

active

045513694

ABSTRACT:
The invention relates to a composite foil, particularly a toilet seat support in which at least one thin, outer normally water-insoluble sealing layer (3) is connected to a less thin water-soluble supporting layer (2) optionally by means of one or more intermediate layers. For obtaining a complete tightness at least the sealing layer (3) is constructed in non-porous manner by extruding a foil from a thermoplastic material. Furthermore, the invention relates to a process and apparatus for the production of the foil by extrusion, preferably with a co-extrusion die.

REFERENCES:
patent: 3625794 (1971-12-01), Arikawa et al.
patent: 3788934 (1974-01-01), Coppa
patent: 3859125 (1975-01-01), Miller et al.

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