Foam moldings having various density regions, the production the

Details Foam moldings having various density regions, the production the Foam moldings having various density regions, the production the

1991-12-18

1992-11-17

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283179, 4283186, B32B 326

Patent

active

051642573

ABSTRACT:
Moldings made from polyolefin particle foams having a mean density of from 0.015 to 0.100 g/cm.sup.3 and having at least two different regions whose densities differ by from 0.005 to 0.030 g/cm.sup.3 have a transition zone between the different density regions having a thickness of not more than 25 mm.

REFERENCES:
patent: 3048537 (1962-08-01), Pall et al.
patent: 3391823 (1968-07-01), Tyms
patent: 3455483 (1969-07-01), Inklaar

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