Co-extruded tape or yarn

Details Co-extruded tape or yarn Co-extruded tape or yarn

1997-11-24

2000-04-04

Wiesberger, Richard

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

428500, 428515, 428516, B32B 2708

Patent

active

060459239

ABSTRACT:
The invention is directed to a co-extruded tape or yarn of the ABA-type, as well as to a process for producing such a tape, comprising a central layer and two top layers, the composition of the central layer (B) and the top layers (A) being different, wherein the central layer (B) is based on at least one propylene polymer, or on at least one ethylene polymer having a density of more than 935 kg/m.sup.3, and the top layers (A) are based on at least one ethylene copolymer with one or more C.sub.3 -C.sub.8 olefins, and the tape or yarn having a thickness of 50 to 150 .mu.m and a stretch ratio between 6 and 10.

REFERENCES:
patent: 3639573 (1972-02-01), Port
patent: 4980227 (1990-12-01), Sekiguchi et al.

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