Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1977-04-07
1979-02-27
Hoag, W. E.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264 401, 264254, 264271, 264328, B29C 500, B29D 300, B29F 100
Patent
active
041419529
ABSTRACT:
A plurality of mold pairs together forming an array having an outer surface and each having a mold cavity and an inlet between a respective cavity and the surface is continuously rotated past the end of a generally stationary nozzle so as sequentially to align the inlets with the nozzle end. A plastified and hardenable resin is continuously fed under pressure to the nozzle end which is spaced from the surface of the mold array by a predetermined constant distance. Thus resin material continuously exits from the nozzle. When the nozzle is aligned with an inlet opening this material enters the inlet opening and forms a body therein and a sprue integral with the body. When the end is not aligned with the inlet the material escapes laterally from between the end and the surface and forms on the surface a generally continuous film unitary with the sprues. The mold pairs are sequentially opened and closed on successive spaced-apart locations of a wire before and after the molding thereon of the bodies. The sprues and the film are separated from the wire after such molding and replastified for reuse.
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Randolph et al.; Plastics Engineering Handbook, Reinhold, N.Y. (1960), pp. ii, 47 and 48.
Felten & Guilleaume Carlswerk AG
Hoag W. E.
Striker Michael J.
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