Multilayer foam composite element with recesses

Details Multilayer foam composite element with recesses Multilayer foam composite element with recesses

2011-03-22

2011-03-22

Vo, Hai (Department: 1788)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S315500, C428S315700, C428S131000

Reexamination Certificate

active

07910200

ABSTRACT:
A multilayer foam composite element whose total thickness d comprises at least three layers composed of an open-cell foam, where at least one of the internal layers has recesses and the two outermost layers have no recesses, whereini) the volume of the recesses in the internal layer having recesses is from 20 to 70% by volume, andii) the thickness of the layer having recesses is from 20 to 80% of the total thickness d.

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