Method of manufacturing and inflatable figure from flexible plas

Details Method of manufacturing and inflatable figure from flexible plas Method of manufacturing and inflatable figure from flexible plas

1992-06-15

1994-05-31

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 156285, 156292, 446220, 446221, 446226, B32B 3104

Patent

active

053166051

ABSTRACT:
An inflatable three dimensional body is formed out of two thin sheets of flexible thermoplastic material by vacuum-forming surface contours in the sheets, and then securing the edge areas of the sheets together, as by heat welding. The mold member used in the vacuum-forming step is constructed so that convex projections on the mold member surface are sized differently than the corresponding projections in the pressurized hollow body. The mold member design takes into account contour changes taking place in the plastic sheet materials during the pressurization step.

REFERENCES:
patent: 1610155 (1926-12-01), Riley et al.
patent: 1881048 (1932-10-01), Dorogi et al.
patent: 2053371 (1936-09-01), Lee
patent: 2099058 (1937-11-01), Frissell
patent: 2170539 (1939-08-01), Schoberg
patent: 3649152 (1972-03-01), Knack

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