Method of making a rigid tubular article

Details Method of making a rigid tubular article Method of making a rigid tubular article

1994-06-15

1995-07-18

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

264 295, 264219, 264334, 427228, B29C 4142, C01B 3100

Patent

active

054339022

ABSTRACT:
A mandrel for making a rigid tubular article that has integrally-formed straight and arcuate portions. The mandrel has a plurality of shape-providing elements slidably disposed on interconnected straight and arcuate rods. After a rigid tubular article has been formed about the mandrel, the shape-providing elements can be slid off the straight and arcuate rods so that the mandrel can be removed from the rigid tubular article's interior. This provides for easy separation of the mandrel from the tubular article.

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