Manufacture of thermoplastics pipe

Details Manufacture of thermoplastics pipe Manufacture of thermoplastics pipe

B - Operations, Transporting

29

C

18/938

B29C 49/64 (2006.01) B29C 49/48 (2006.01) B29C 35/04 (2006.01)

Patent

CA 1164179

ABSTRACT: A mould for use in the manufacture of thermoplastics eg PVC pipe by radial expansion of a pipe blank, the mould comprising a cylindrical central portion 10 and two removable mould end portions 11, 12. The pipe blank 14 is located centrally within the mould by mandrels 13 within each mould end portion 11, 12. Water inlet/outlet ports 15, 16 are provided in each mould end portion 11, 12 to admit water to and remove it from the region between the blank 14 and the mould walls, and the mandrels 13 are hollow to permit inlet/outlet of water through the interior of the blank 14.

359929

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