Method and apparatus for making plastic tubes

Details Method and apparatus for making plastic tubes Method and apparatus for making plastic tubes

1980-02-22

1983-02-15

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Rod or tubular preform

264296, 264320, B29C 300

Patent

active

043738940

ABSTRACT:
A method and apparatus to close an end of a hollow thermoplastic tube is disclosed. The apparatus includes a female die with an interior shaped end in the configuration of the desired closed end of the tube. The shaped end of the die is heated to the softening point of the plastic. The portion of the die adjacent the shaped end is in contact with a heat sink to maintain that portion of the tube adjacent the closed end at a temperature at least 15.degree. F. below the softening point of the plastic to prevent deformation of the tube.

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patent: 4302174 (1981-11-01), Hinzmann
patent: 4316870 (1982-02-01), Rowley

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