DEVICE FOR MANUFACTURING THERMOPLASTIC DOUBLE WALL PIPE

Title:

DEVICE FOR MANUFACTURING THERMOPLASTIC DOUBLE WALL PIPE

Document Type and Number:

Japanese Patent JPS59227424

Kind Code:

A

Abstract:

In an apparatus such as a corrugator for manufacturing thermoplastic pipe with a corrugated outer wall and a smooth inner wall, a calibrator is employed to provide a smoother inner wall and a more rapid inner wall cooling. The calibrator includes a tube wound into a helical coil and an adjustment mechanism for adjusting the coil diameter. A cooling fluid may be passed through the tube.

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Inventors:

MANFURETSUDO EE EE RUBUKE

Application Number:

JP10188784A

Publication Date:

December 20, 1984

Filing Date:

May 22, 1984

Export Citation:

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Assignee:

LUPKE MANFRED ARNO ALFRED

International Classes:

B29C53/00; B29C49/00; B29C53/30; B29C53/58; B29C65/00; B29C69/00; B29D23/00; B29D23/18; B29C48/11; B29C48/13; (IPC1-7): B29D23/18; B29D23/03

Attorney, Agent or Firm:

Masao Okabe

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