Sheet for producing plastic films and a process for producing th

Details Sheet for producing plastic films and a process for producing th Sheet for producing plastic films and a process for producing th

1995-06-29

1997-11-18

Zirker, Daniel

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Coated or impregnated woven, knit, or nonwoven fabric which...

Coated or impregnated inorganic fiber fabric

428156, 428172, B32B 300

Patent

active

056881568

ABSTRACT:
This invention concerns a sheet for producing plastic films with a tear-resistant layer and a plastic layer that is applied to the former and has a surface that faces away from the tear-resistant layer and is suitable for applying liquid or pasty plastics for the plastic film to be produced. The surface of the layer of plastic which is preferably a negative of a relief pattern consists of polypropylene. The sheet permits a high fidelity in reproduction of the relief pattern plus a long lifetime as well. The sheet may be relatively thin, so a great length can be wound up on a roll. Therefore, great lengths of a plastic film can be produced in one piece by casting or spreading liquid plastic on the sheet. Therefore, the conversion time required for the manufacturing installation is short, which has a positive effect on the price of the product.

REFERENCES:
patent: 3142715 (1964-07-01), Burk
patent: 3190947 (1965-06-01), Norcross
patent: 3575754 (1971-04-01), Duerden et al.
patent: 3924040 (1975-12-01), Addie et al.
patent: 4473609 (1984-09-01), Caldwell
patent: 4746565 (1988-05-01), Bafford et al.
patent: 4833005 (1989-05-01), Klaar et al.

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