Injection skis and their process of manufacture

Details Injection skis and their process of manufacture Injection skis and their process of manufacture

1985-09-10

1987-07-21

Swisher, Nancy A.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 466, 280610, A63C 500, A63C 504, A63C 512

Patent

active

046817255

ABSTRACT:
Ski upper- and lower-surface constituting materials are set in position in a mold provided with a space appropriate for the dimensional distribution of the padding for the ski. The ski upper-surface constituting material is arranged so that a resin sheet of ABS resin, etc. constitutes the outer surface of ski. The inner upper surface of the upper mold piece is formed in a curved surface having, for example, grooves. A foamy resin is injected to fill the space between the ski upper and lower constituting materials. The foaming pressure raised by the foamy resin will press the resin sheet against the inner upper surface of the upper mold piece with resulting deformation of the resin sheet. Thus one may obtain a ski which is provided on its upper surface with projections.

REFERENCES:
patent: 2071220 (1937-02-01), Schniebs
patent: 2510794 (1950-06-01), Beerli
patent: 3212787 (1965-10-01), Wernty
patent: 3534972 (1970-10-01), Salerno
patent: 3733380 (1973-05-01), Ishida
patent: 3816573 (1974-06-01), Hashimoto et al.
patent: 3958810 (1976-05-01), Bohm
patent: 4118051 (1978-10-01), Shima
patent: 4154459 (1979-05-01), Kneissl
patent: 4340241 (1982-07-01), Crocket
EP Application 0078521 of May 1983, Viola.

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