Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1981-09-16
1984-01-10
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 85, 156 86, 156229, 156243, 15624413, 15624414, 1562722, 156290, 156292, 174DIG8, B29D 2300, B32B 3104
Patent
active
044251742
ABSTRACT:
A process for the production of a heat shrinkable article which comprises forming bonds between regions of at least two superimposed lengths of polymeric material to produce a bonded article so disposed that the desired direction of heat shrinkability lies along the length of the bonded article, cross-linking the bonded article and the bonds between the said lengths of polymeric material, heating the bonded article, stretching the bonded article longitudinally and cooling it (which may comprise allowing it to cool naturally in the stretched condition) to render the articles heat shrinkable. Pneumatic or other methods of expansion may be used in addition to the stretching to render hollow articles heat-shrinkable, the combination of stretching and another such method being advantageous in achieving high expansion ratios while maintaining a reasonable degree of symmetry in the finished hollow recoverable articles.
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Neue Deliwa-Zeitschrift Heft 2/71, pp. 49-51.
Burkard Herbert G.
Peterson James W.
Raychem Limited
Weston Caleb
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