Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1977-03-10
1979-01-30
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156305, 156306, 285 21, 285 22, 285260, 285423, 285DIG16, 285 20, B29C 2702
Patent
active
041371178
ABSTRACT:
A solvent-bonded joint between plastic members, and a method of making the same, particularly useful where such members are intended to convey flowable materials such as sterile medical solutions. The joint includes a pair of members joined at a zone of interference, a tapered crevice between the members, a solvent bond in the tapered crevice, and a series of spacers extending along the entrance to the crevice. The spacers or nubs are provided by one or both of the members and maintain the walls at the entrance of the crevice in uniformally-spaced and stressed condition to facilitate introduction of solvent and to insure proper bonding of the parts even where such parts are formed of flexible plastic material. The zone of interference serves as a barrier against any flowable material entering the tapered crevice in the opposite direction prior to formation of the solvent bond and further serves as a barrier against the escape of solvent through the crevice or the contamination by solvent of any material beyond or below the crevice.
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American Hospital Supply Corporation
Massie Jerome W.
Powell William A.
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