Apparatus for manufacture of thermoplastics pipe

Details Apparatus for manufacture of thermoplastics pipe Apparatus for manufacture of thermoplastics pipe

1980-09-10

1982-07-20

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Molding pressure control means responsive to pressure at...

264535, 264570, 264573, 425526, 4253871, B29C 1707

Patent

active

043403441

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.

REFERENCES:
patent: 2983961 (1961-05-01), Titterton et al.
patent: 3114968 (1963-12-01), Rudelick
patent: 3175246 (1965-03-01), Loges et al.
patent: 4049762 (1977-09-01), Martino et al.

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