Thermoplastic building enclosure member

Details Thermoplastic building enclosure member Thermoplastic building enclosure member

1980-11-20

1982-11-02

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

52 80, 52200, 264292, 264322, 264327, B29C 300, B29C 2500

Patent

active

043573819

ABSTRACT:
A process for forming a low silhouette thermoplastic enclosure panel including the steps of heating a thermoplastic sheet while its periphery is restrained and tension exerted outward toward the periphery thereof, uniformly cooling one side of said sheet while maintaining the opposite side at or above plastic deformation temperatures until the side being cooled is sufficiently rigid to maintain its shape, removing the sheet from the restraining means and uniformly cooling both surfaces of the sheet material to effect a deflection of the sheet in a direction of the first cooled surface.

REFERENCES:
patent: 2791801 (1957-05-01), Szantay
patent: 3439078 (1969-04-01), Whiteford
patent: 4185069 (1980-01-01), Smith et al.

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