Inflation device for forming inflated containers

Details Inflation device for forming inflated containers Inflation device for forming inflated containers

B - Operations, Transporting

31

D

B31D 5/00 (2006.01)

Patent

CA 2595753

An inflation device for introducing gas into inflatable webs of the type comprising a pair of juxtaposed film plies (18) and a pair of opposing film edges (20), the inflation device including a body (34) having a longitudinal dimension, a transverse dimension, and a web-contact (36) region in which the inflation device makes contact with opposing surfaces of the juxtaposed film plies as gas is introduced into the inflatable web, the body having at least one increase in peripheral transverse surface distance along the longitudinal dimension of th body, and a passage (40) within the body through which gas may flow, the passage having a termination point (42) within the web-contact region to form an inflation zone therein.

L'invention concerne un dispositif de gonflage conçu pour introduire un gaz dans des bandes gonflables du type comprenant une paire de plis de film juxtaposés et une paire de bordures de film opposées. Le dispositif de gonflage comporte un corps ayant une dimension longitudinale, une dimension transversale, et une zone de contact avec la bande où le dispositif de gonflage vient en contact avec les surfaces opposées des plis de film juxtaposés à mesure que le gaz est introduit dans la bande gonflable, le corps ayant au moins un accroissement au niveau de la distance périphérique de la surface transversale le long de la dimension longitudinale du corps, et un passage à l'intérieur du corps par lequel le gaz peut s'écouler, ledit passage ayant un point de terminaison dans la région de contact avec la bande pour y former une zone de gonflage.

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