Title:
METHOD AND APPARATUS FOR MANUFACTURING COVER-CORRUGATED PIPE EQUIPPED WITH A MEDIUM PIPE INSIDE
Document Type and Number:
Japanese Patent JPH10202763
Kind Code:
A
Abstract:
To manufacture a cover-corrugated pipe in which the inside cross section of the pipe can be packed sufficiently by at least one conduit pipe.
In an apparatus, a thermoplastic plastic hose-shaped body 8 is generated continuously in the manufacturing direction 6, and a medium pipe 2 is inserted into the body 8 in the manufacturing direction 6 to be loose to the body 8. The body 8 and the pipe 2 in the body 8 are transported in the manufacturing direction, and a lateral notch 3 generated by negative pressure (to the atmospheric pressure) exclusively working to the outside of the body 8 is formed in the body 8.
Inventors:
HEGLER RALPH PETER
Application Number:
JP880098A
Publication Date:
August 04, 1998
Filing Date:
January 20, 1998
Export Citation:
Assignee:
HEGLER RALPH PETER
International Classes:
B29D23/18; B29C48/09; B29C48/30; B29C48/34; B29C49/00; H02G3/04; B29C49/04; (IPC1-7): B29D23/18
Attorney, Agent or Firm:
Takehisa Ito (1 outside)
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