Method and apparatus for forming seal portion of tubular...

Details Method and apparatus for forming seal portion of tubular... Method and apparatus for forming seal portion of tubular...

B - Operations, Transporting

65

B

B65B 7/14 (2006.01) B29C 65/14 (2006.01)

Patent

CA 2164877

A projected end portion 3 of an end portion 2 of a tubular body 1 is heated and fused. Then, the projected end portion 3 is pressed and dimished in volume in a closed mold, thereby it is molded into a desired shape of a seal portion 5 which is increased in density.

La chaleur dégagée lors du chauffage et de la fusion d'un corps tubulaire renfermant une résine synthétique à forte étanchéité au gaz risque de décomposer le matériau et de causer son moussage. La partie en saillie d'un tronçon (3) d'une extrémité (2) d'un tel corps tubulaire (1) est chauffée et fondue, puis elle est comprimée et réduite en volume pour être moulée par compression en un tronçon d'étanchéité (5) de la configuration voulue, ce tronçon d'étanchéité (5), revêtant la configuration souhaitée, présente une densité accrue.

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