Lightweight structural panel

Details Lightweight structural panel Lightweight structural panel

1977-11-17

1979-01-09

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

428321, 428322, B32B 518

Patent

active

041339304

ABSTRACT:
A lightweight structural panel comprises a foam core member. Adhered to one face of the core member is a pigmented plastic cover sheet having substantially the same plan configuration as the core member. The plastic sheet contains a mix of additives, antioxidants, and pigment coatings which prevent it from cracking, splitting and getting hard. In addition, the cover sheet has substantially the same response to changes in temperature and humidity as the core member such that the panel retains its original shape despite changes in temperature and humidity. In another embodiment both faces of the core member include a plastic cover sheet adhered thereto.

REFERENCES:
patent: 3531367 (1970-09-01), Karsten
patent: 3832263 (1974-08-01), Cleveland et al.
patent: 3936565 (1976-02-01), Good
patent: 3954537 (1976-05-01), Alfter et al.
patent: 4008347 (1977-02-01), Amberg et al.
patent: 4013810 (1977-03-01), Long
patent: 4020207 (1977-04-01), Alfter et al.
patent: 4034131 (1977-07-01), Rhoads
patent: 4049147 (1977-09-01), Stiles et al.

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