Method of forming a lightweight structural panel
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United States of America Patent
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May 19, 1992
Grant Date -
N/A
app pub date -
Sep 26, 1990
filing date -
Sep 26, 1990
priority date (Note) -
Expired
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Abstract
A lightweight structural panel is formed by subjecting a surface of a metal cover sheet to an oxidizing treatment to remove any foreign substances thereon, applying an adhesive layer to a core member, and bonding the treated surface of the metal cover sheet to the adhesive layer on the core member. Preferably, the oxidizing treatment is by electron plasma surface treatment for a period of time sufficient to oxidize any oil, chemical film, or rust on the surface of the metal sheet. The core member is made of a plastic material which may also be subjected to electron plasma surface treatment. The metal cover sheet may instead be flame-treated, or treated with oxidizing chemicals such as hydrazine. Metal cover sheets may be bonded on both sides of the plastic core.
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