Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se – Utilizing surface to be reproduced as an impression pattern
Patent
1985-01-28
1987-02-17
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
Utilizing surface to be reproduced as an impression pattern
249 57, 249139, 264 36, 26433113, 26433115, 264DIG67, 425375, 425447, 425DIG47, B29C 3902
Patent
active
046438645
ABSTRACT:
A thread of a fluid material for gasket manufacture is deposited onto a non-planar, non-adhesive support sheet (12) from a nozzle (22) that is displaced above the support along a path corresponding to the outline of the gasket, with subsequent curing of the fluid material. The support sheet is prepared by pressing sheet material into a tridimensional shape whereby its surface contains the non-planar outline of the gasket to be manufactured; the shaped support is positioned with respect to a nozzle carried by a manipulator (20) capable of being controlled to move the nozzle with respect to the support along three independent spatial coordinates; and the nozzle is fed with said fluid material while being displaced along said non-planar outline. Preferably, the support sheet is kept flattened by vacuum against an underlying, matching surface.
REFERENCES:
patent: 2394327 (1946-02-01), Niessen et al.
patent: 3183285 (1965-05-01), Boylan
patent: 3608055 (1971-09-01), Long
patent: 3946982 (1976-03-01), Calkins
patent: 3966166 (1976-06-01), Elliott
patent: 4059564 (1977-11-01), Coughlan et al.
patent: 4350486 (1982-09-01), Croseck et al.
patent: 4519567 (1985-05-01), Rautenberg
Lowe James
Tako S.p.A.
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