Package making – Methods – Plural covers
Patent
1992-06-11
1994-01-11
Sipos, John
Package making
Methods
Plural covers
531332, 53175, 222105, 493100, 493101, B65B 318
Patent
active
052770150
ABSTRACT:
A method and apparatus is for inserting a flat flexible bag having a rigid fitment into a bottle through a small bottle finish, and expanding the bag inside the bottle. The flat flexible bag can be grasped and oriented via the fitment utilizing a friction chuck. The fitment also enables the bag to be sealed to the bottle in an air-tight manner by interference fit. A biased plunger extends into the bag through the fitment. The plunger helps push the bag through a funnel while a vacuum is applied to the bag through the plunger. The funnel includes two angled plows which cause the bag to fold in a "C" shaped configuration. This insures reliable expansion of the bag upon releasing a blast of air into the bag. During the expansion process an air vent channel permits escape of the air between the bag and the bottle. An exemplary package formed utilizing this method and apparatus is a squeeze pump package having a thin film beam spring vent valve. The valve includes a thin film beam spring located against a substantially cylindrical interior surface of the bottle over an aperture. A method and apparatus for assembling a beam spring vent valve is also discussed.
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Brown Michael T.
Harding Stephen W.
Kock Ronald W.
Reiboldt H. Norman
Hilton Michael E.
Kock Ronald W.
Linman E. Kelly
Moon Daniel
Sipos John
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