Method of automatic manufacture of closed, internally sterile ho

Details Method of automatic manufacture of closed, internally sterile ho Method of automatic manufacture of closed, internally sterile ho

1975-02-26

1977-05-31

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

264 90, 264 96, 264 99, 425DIG215, B29C 1707

Patent

active

040269825

ABSTRACT:
The process of the invention essentially consists in supplying sterile gas to an extruded parison confined between the two shells of a mould, this sterile gas being sequentially applied at a first pressure slightly higher than atmospheric pressure, at a second pressure much higher than the first pressure in order to inflate the parison, and at a third pressure which is much lower than the second pressure and corresponds to the desired inflating pressure of the hollow body to be formed.

REFERENCES:
patent: 3246062 (1966-04-01), Scott, Jr. et al.
patent: 3423495 (1969-01-01), Bachner
patent: 3619442 (1971-11-01), Henderson
patent: 3814783 (1974-06-01), Dardaine et al.

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