Foamed plastic cushioning materials

Details Foamed plastic cushioning materials Foamed plastic cushioning materials

1988-12-12

1989-07-25

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

206523, 206586, 428 71, 428 76, 4283184, B32B 326

Patent

active

048512869

ABSTRACT:
An improved cushioning element for placement between an impacting surface and a surface of an object to be cushioned against damage caused by impact during transport or storage, comprising: a foamed polymeric laminate comprising a first cushioning layer of a first polymeric foam material having a first density adhered directly to a second cushioning layer of a second polymeric foam material having a different, second density; a first planar, rigid, backing adhered to and in contact with one surface of said foamed polymeric laminate and a second planar, rigid, backing adhered to and in contact with a surface of said foamed polymeric laminate opposite said one surface, said one surface and opposite surface being parallel to each other, and said first and second polymeric foam materials being adhered in a plane substantially parallel to said one and opposite surfaces.

REFERENCES:
patent: 2860768 (1958-11-01), Smithers
patent: 2979246 (1961-04-01), Liebeskind
patent: 3120319 (1964-02-01), Buddrus
patent: 3138248 (1964-06-01), Abbott
patent: 3344973 (1967-10-01), Studen
patent: 3607601 (1971-09-01), Milam Jr. et al.
patent: 4053341 (1977-10-01), Kleiner et al.
patent: 4075717 (1978-02-01), Lemelson
patent: 4413735 (1983-11-01), Little
patent: 4721643 (1988-01-01), Harayama et al.

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