Method for producing reinforced plastic tubular body having annu

Details Method for producing reinforced plastic tubular body having annu Method for producing reinforced plastic tubular body having annu

1979-06-26

1981-04-21

Michl, Paul R.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

249 63, 249144, 249151, 249183, 249184, 264313, 264316, 264336, B28B 706

Patent

active

042632498

ABSTRACT:
A mold for the production of a reinforced plastic tubular body having an annular groove such as a pipe coupling, the mold having a mold body and detachably mounted on a predetermined position thereof, an annular groove former consisting of a surface layer of an elastic material and a core covered with the surface layer. The reinforced plastic tubular body is produced by forming a layer of a molding material around the aforesaid mold, curing the layer of molding material, separating the mold body from the cured layer of molding material, and then separating the annular groove former from the cured layer of molding material by removing the core and then removing the surface layer.

REFERENCES:
patent: 3962394 (1976-06-01), Hall
patent: 3988103 (1976-10-01), Hoffmeister
patent: 4113828 (1978-09-01), Kramer
Japanese Laid-Open Utility Model Publication, No. 48-100863, Nov. 28, 1973.

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