Method of sealing a cylindrical inlet of a bag

Details Method of sealing a cylindrical inlet of a bag Method of sealing a cylindrical inlet of a bag

2006-11-02

2008-11-25

Gerrity, Stephen F (Department: 3721)

Package making

Methods

Filling preformed receptacle and closing

C053S477000, C053S479000, C053S284700, C053S374200

Reexamination Certificate

active

07454881

ABSTRACT:
A method of sealing a liquid container, including filling a liquid into a liquid containing bag including a cylindrical inlet; and sandwiching the cylindrical inlet with a pair of heat-sealing heads upon application of heat such that the cylindrical inlet is sealed with the liquid therein, wherein at least one of the pair of heat-sealing heads comprises a concave edge.

REFERENCES:
patent: 2568794 (1951-09-01), Dieter
patent: 3765144 (1973-10-01), Schiesser
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patent: 5054267 (1991-10-01), Dundas
patent: 5606844 (1997-03-01), Takagaki et al.
patent: 2004/0263587 (2004-12-01), Tsuyuki et al.
patent: 0 409 388 (1991-01-01), None
patent: 57-66923 (1982-04-01), None
patent: 2004-314554 (2004-11-01), None
patent: 2004-338146 (2004-12-01), None

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