Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Patent
1977-06-21
1979-01-09
Briggs, William R.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
264328, 425574, 425576, B29F 110
Patent
active
041336224
ABSTRACT:
A plurality of cylindrically segmental 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 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 by a cam 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 body after such molding and replastified for reuse.
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patent: 3635612 (1972-01-01), Fortin et al.
patent: 3762000 (1973-10-01), Menzin et al.
Briggs William R.
Felten & Guilleaume Carlswerk AG
Striker Michael J.
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