Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1985-02-19
1987-01-13
Ball, Michael
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 86, 1563096, B29C 6502
Patent
active
046362720
ABSTRACT:
The process for thermally bonding plastics is capable of bonding two tubings over a very small circumferential overlap area and the bond formed thereby, is able to withstand high peel and shear forces. The method includes the steps of: providing a stepped mandrel having a smaller diameter portion and a larger diameter portion; sliding a first tubing over the smaller portion; sliding a second tubing over the larger portion and slightly over the first tubing to establish an overlapping area to be bonded; sliding a shrink tubing over the second tubing to a position over the overlapping area; placing the overlapping area in a die; and heating the die a sufficient amount for a sufficient time to cause bonding of the first tubing to the second tubing. Preferably, the first tubing is made of a substantially non-crosslinked olefin and the second tubing is made of a highly crosslinked (heat shrink) polyolefin.
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Ball Michael
Collins Henry W.
Cordis Corporation
Vigil Thomas R.
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