Foam molding assembly

Details Foam molding assembly Foam molding assembly

1989-12-01

1991-08-13

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

249 63, 249141, 249171, 249177, 425577, 425812, 425817R, B29C 3926

Patent

active

050392913

ABSTRACT:
Molding a foamed product is carried out by using a front and a rear mold for molding a front and a rear portion of the foamed product and a core interposed between the front and rear molds. The front and rear molds are closed at a moment when a lapse of time arrives at 30%-100% of a rise time of the foaming stock solution later applied. Thereafter the closed molds are maintained in a position where an angle of the closed molds relative to a horizontal plane is within a range between 90.degree. and an angle more than 0.degree.. The front and rear molds are pivotally connected to each other with their one ends by means of a pivot shaft. The core is pivotally supported with its one end by a shaft arranged in parallel to the pivot shaft. The core is formed with a through-hole and said rear mold is provided with a protrusion to be hermetically fitted in the through-hole of the core.

REFERENCES:
patent: 3302244 (1967-02-01), Ludwig
patent: 3327029 (1967-06-01), Pincus et al.
patent: 3408695 (1968-11-01), Scott
patent: 4247351 (1981-01-01), Richenberg
patent: 4793793 (1988-12-01), Swenson et al.

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