Method of making a hollow core structural member

Details Method of making a hollow core structural member Method of making a hollow core structural member

1992-10-30

1994-09-20

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428280, 428284, 428902, 428408, 264258, 264317, B32B 1500

Patent

active

053487982

ABSTRACT:
An improved method for forming a hollow core structural member, such as an automotive bumper beam, from moldable plastic sheets, such as fiberglass reinforced plastic sheets, by providing a press having a desired shape on the opposing members of the press, placing opposed sheets in the press with a layer of frozen, meltable material, such as ice, in place between them, forming the sheets into the desired article configuration in the press, removing the formed member from the press, then melting and removing the meltable material from the interior of the formed member.

REFERENCES:
patent: 4749613 (1988-06-01), Yamada et al.

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