Apparatus for molding plastic products

Details Apparatus for molding plastic products Apparatus for molding plastic products

1985-09-23

1987-07-21

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

With means to sever product

264159, B29C 1707, B29C 1712

Patent

active

046815252

ABSTRACT:
Apparatus for molding plastic products of virtually any complicated configuration is provided. When a parison is extruded out of a nozzle, a separating agent, preferably oil, is supplied into the parison as a lubricant. Since a thin film of the separating agent is formed on the inside surface of the parison, portions of the inside surface do not stick together even if they are brought into contact from some reasons. This insures to mold a plastic product of a very complex configuration. Use of a separating agent also allows to form sheet-type products by dividing the parison into several sections as desired. This is a very efficient way of forming sheet-type products since at least two may be formed at the same time.

REFERENCES:
patent: 3183288 (1965-05-01), Taylor et al.
patent: 3579622 (1971-05-01), Shaw et al.

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