Mandrel and a method of making a rigid tubular article

Details Mandrel and a method of making a rigid tubular article Mandrel and a method of making a rigid tubular article

B - Operations, Transporting

28

B

B28B 21/82 (2006.01) B28B 21/86 (2006.01) B29C 33/00 (2006.01) B29C 33/48 (2006.01) B29C 53/82 (2006.01) B29D 23/00 (2006.01) C04B 35/54 (1990.01)

Patent

CA 2077400

ABSTRACT OF THE DISCLOSURE 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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