Process and molding tool for the manufacture of molded parts hav

Details Process and molding tool for the manufacture of molded parts hav Process and molding tool for the manufacture of molded parts hav

1985-05-16

1988-03-08

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264 51, 2643286, 2643287, 26432812, 264DIG83, 425543, 425577, 425817R, 425DIG14, B29C 4556, B29C 6722, C08G 1808, C08G 1814

Patent

active

047298634

ABSTRACT:
The present invention is directed to a process for the manufacture of molded parts having areas in the form of grids, grills or gratings, in which a fluid mass is introduced into the mold cavity of a molding tool conforming to the molded part and the cavity is filled by said fluid mass, characterized in that in the mold cavity, the zones provided for the apertures in the areas conforming to the said grids, grills or gratings of the molded part are first flooded by the mass and the mass is subsequently displaced from these zones, and to a molding tool to be used in such process.

REFERENCES:
patent: 2890487 (1959-06-01), Morin
patent: 3509603 (1970-05-01), Halsall et al.
patent: 3564660 (1971-02-01), Darnell
patent: 3685933 (1972-08-01), Schneider
patent: 3709640 (1973-01-01), Boden et al.
patent: 3767742 (1973-10-01), Robin
patent: 3930780 (1976-01-01), Lovejoy
patent: 3970732 (1976-07-01), Slaats et al.
patent: 4129636 (1978-12-01), Boden et al.
patent: 4154784 (1979-05-01), Ruhl
patent: 4514356 (1985-04-01), Harrison

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