Synthetic resin container including a mouthpiece sealed by a clo

Details Synthetic resin container including a mouthpiece sealed by a clo Synthetic resin container including a mouthpiece sealed by a clo

1994-06-27

1997-08-12

Stemmer, Daniel

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

53486, 53488, 156322, B65B 728

Patent

active

056561121

ABSTRACT:
A synthetic resin container including a mouthpiece sealed by a closure is to be used for medical drip infusion or the like. The closure has a tight-sealing synthetic resin stopper, and a leakage preventing rubber stopper for preventing liquid leakage when the closure is pierced by a needle or the like. The mouthpiece of the synthetic resin container is sealed by the closure according to a method including providing a concave portion and/or a convex portion having a cross-section shaped in a wedge or the like at one or both of the upper portions of the mouthpiece and the tight-sealing synthetic resin stopper in order to impart provided thermal conductivity. The synthetic resin stopper is inserted into the mouthpiece and the rubber stopper is inserted into the synthetic resin stopper. The upper portions of the mouthpiece and the synthetic resin stopper are covered with a metallic mouthpiece forming cap. Then the metallic mouthpiece forming cap is pressed using only heat generated at the mouthpiece of the container during molding of the container so that the mouthpiece and the synthetic resin stopper are pressed inwardly and are thermally welded so as to be integrated with each other and with the rubber stopper.

REFERENCES:
patent: 4222974 (1980-09-01), Smith
patent: 4259419 (1981-03-01), Uba
patent: 4769095 (1988-09-01), Sager
patent: 4984415 (1991-01-01), Kuroda
patent: 5160061 (1992-11-01), Stolzman

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