Manufacture of thermoplastics pipe

Details Manufacture of thermoplastics pipe Manufacture of thermoplastics pipe

1980-09-10

1982-04-06

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264531, 264535, 264570, 264573, B29C 1707

Patent

active

043235352

ABSTRACT:
A method of manufacturing thermoplastics pipe by the radial expansion of a pipe blank within a mould. The blank 28 is inserted horizontally into a raised central mould portion 12, with the ends of the blank 28 extending outwardly of the ends of the central mould portion 12. Portion 12 is then lowered to a first position where mandrels 19, 20 enter the blank 28 from each end, and then a second position where mould end caps 15, 17 are closed onto the central mould portion 12, and heating and expansion of the blank 28 is then effected.

REFERENCES:
patent: 2983961 (1961-05-01), Titterton
patent: 4049762 (1977-09-01), Martino

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