Foam-plastic core for structural laminate

Details Foam-plastic core for structural laminate Foam-plastic core for structural laminate

1996-05-28

1998-08-25

Thomas, Alexander

Stock material or miscellaneous articles

Longitudinally sectional layer of three or more sections

Next to unitary sheet of equal or greater extent

428 55, 4283105, 4283171, 156 78, B32B 326, B32B 310

Patent

active

057981604

ABSTRACT:
A foam-plastic core for a structural laminate produced by converting standard, rectangular slabs of closed-cell, rigid foam plastic stock in which the density of each slab varies from the inner to the outer regions thereof into relatively thin panels useable as the core of a structural laminate in which the core is sandwiched between facing sheets. To produce these cores, several standard slabs are stacked and bonded together by parallel lines of adhesive compatible with the foam plastic material to create a large multi-slab block. The block is then sliced transversely in parallel planes normal to the lines of adhesive to yield a plurality of panels. Each panel is composed of a series of interconnected foam-plastic sections derived from respective slabs of the block whereby the density of the sections is evenly distributed throughout the panel and the mechanical properites of the panel are therefore predictable and satisfy structural laminate criteria.

REFERENCES:
patent: 4536427 (1985-08-01), Kohn
patent: 5462623 (1995-10-01), Day

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