Container-treatment method comprising vacuum pumping phases,...

Details Container-treatment method comprising vacuum pumping phases,... Container-treatment method comprising vacuum pumping phases,...

2005-07-05

2010-11-23

Meeks, Timothy H (Department: 1715)

Coating processes

Interior of hollow article coating

Vacuum or pressure utilized

C427S575000, C427S230000, C427S237000

Reexamination Certificate

active

07838071

ABSTRACT:
A container-treatment method, of the type in which the container (12) is disposed inside a chamber (16) which defines a cavity (18) outside the container (12) and which is connected to a Vacuum pumping circuit (50), the interior of the container (12) being connected to the pumping circuit (50). The method includes a preliminary pumping step (E1) which is followed by a treatment step (E2). The preliminary step (E1) includes the following successive phases, namely: an external pumping phase (P1) which produces a drop in the pressure inside the cavity (18) only; and an internal pumping phase (P2) which produces a drop in the pressure inside the container (12) only. A machine used to implement the method is also disclosed.

REFERENCES:
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patent: 5677010 (1997-10-01), Esser et al.
patent: 5690745 (1997-11-01), Gruenwald et al.
patent: 6019060 (2000-02-01), Lenz
patent: 2003/0086973 (2003-05-01), Sowden et al.
patent: 43 18 086 (1994-12-01), None
patent: 0 773 167 (1997-05-01), None
patent: WO 95/22413 (1995-08-01), None

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