Method of making a composite foamed resin ski

Details Method of making a composite foamed resin ski Method of making a composite foamed resin ski

1984-12-10

1987-01-06

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 455, 264101, 264275, 264DIG83, 280610, 425117, 425547, B29C 4516, B29C 6722, C08J 900

Patent

active

046345639

ABSTRACT:
A pre-shaped aluminum plate is held against the flat end wall of an inverted mold cavity by vacuum pressure communicated through bore holes in the wall leading to a vacuum chamber in the mold body. A high temperature PTFE gasket shaped to match the plate fits in an annular recess in the wall to provide a seal between the wall and plate. Polyurethane foam expands and hardens in the mold cavity to further press the plate against the wall and to form a foamed plastic water ski having a flush aluminum deck. The mold cavity has a curved side wall to produce a ski having a radiused edge about the deck.

REFERENCES:
patent: 3207822 (1965-09-01), Makowski
patent: 3738675 (1973-06-01), Hashimoto
patent: 4259274 (1981-03-01), Tiitola
patent: 4486368 (1984-12-01), Hancock

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