Apparatus for molding plastic pipe fitting with internal groove

Details Apparatus for molding plastic pipe fitting with internal groove Apparatus for molding plastic pipe fitting with internal groove

1981-03-23

1982-10-05

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

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

Forming baffle, bottleneck, or handle

264573, 425533, 4253871, 425DIG218, B29C 1707

Patent

active

043526527

ABSTRACT:
The internal core of a molding apparatus does not have to be axially moved for molding a plastic pipe provided with a peripheral groove therein. This is accomplished by providing the internal core with a groove of such narrow width as to always be open to the surrounding cooperating mold body while at the same time preventing plastic material from entering the groove as the plastic material is being introduced into the mold cavity.

REFERENCES:
patent: 3339231 (1967-09-01), Piotrowski
patent: 4100307 (1978-07-01), Abano

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