Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Patent
1987-12-21
1989-08-08
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
264244, 4251292, 425509, 425817R, B29C 4516
Patent
active
048548413
ABSTRACT:
An apparatus is provided for molding an article of footwear having an outer sole, a lateral sole and an inner sole, the outer and lateral soles being of an elastomer, and the inner sole being of a thermoplastic or a mixture of isocyanate and a polyol reacting into polyurethane. The outer sole and the inner sole are each injection molded from an elastomer and bonded at their common contact zone by full vulcanization. The outer sole and the lateral sole may each be of different elastomers. The outer sole and the inner sole are bonded together in the area of their contact zone via chemical bonds between the isocyanate and reactive end-groups of substances added to the elastomer.
REFERENCES:
patent: 3677678 (1972-07-01), Christie et al.
patent: 3915608 (1975-10-01), Hujik
patent: 4123493 (1978-10-01), Schilke et al.
patent: 4125353 (1978-11-01), Stark
patent: 4734023 (1988-03-01), Nesch et al.
patent: 4801256 (1989-01-01), Landwehr et al.
patent: 4810178 (1989-03-01), Proll et al.
Publication No. DESMA 521S-526S, Klockner-Ferromatik Desma GmbH, entitled "Injection Molding Machine For Direct Attachment Of Soles."
Graf Hans-Joachim
Koliwer Wolfgang
Klockner Ferromatik Desma GmbH
Nguyen Khanh P.
Woo Jay H.
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