Heat shrinkable member and method of forming the same

Details Heat shrinkable member and method of forming the same Heat shrinkable member and method of forming the same

B - Operations, Transporting

29

C

B29C 63/38 (2006.01) B29C 63/08 (2006.01) B29C 65/34 (2006.01) F16L 47/22 (2006.01) F16L 59/20 (2006.01) B29C 53/40 (2006.01)

Patent

CA 2209518

A method of forming a heat shrinkable sleeve member comprising spirally winding a longitudinally heat shrinkable sheet in a multiplicity of superimposed turns about a mandrel wherein the direction of longitudinal shrinkage of the sheet extends circumferentially of the mandrel, heating the winding to fuse adjacent layers together to form a sleeve, cooling the sleeve and removing it from the mandrel, and wherein at least one end of the sheet has at least one marginal edge portion that inclines laterally inwardly in the direction longitudinally toward the end of the sheet.

Méthode de formage d'un élément de manchon thermorétractable. Elle consiste à enrouler en spirale une feuille, qui est thermorétractable dans le sens longitudinal, sur un grand nombre de tours superposés autour d'un mandrin sur lequel la thermorétraction longitudinale de la feuille se fait dans le sens de sa circonférence; à chauffer l'enroulement pour fondre ensemble les couches adjacentes pour former un manchon; à refroidir ce manchon et à l'enlever du mandrin, où au moins une extrémité de la feuille possède au minimum une petite partie de son bord qui s'incline latéralement vers l'intérieur dans le sens longitudinal en direction de l'extrémité de la feuille.

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