Method for blow-molding hollow container and blow air cylinder

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 49/58 (2006.01) B29C 49/60 (2006.01) B29C 49/04 (2006.01)

Patent

CA 2235450

The blow air cylinder is constituted by a blow nozzle having a mechanism for positioning blowing inlets in at least part of a portion freely sliding forward and backward inside the body. The blow air cylinder has a tip portion with an outer diameter smaller than at about the center portion thereof and being of a shape of a closed injection needle, and having the blowing inlets located slightly at the back of the tip portion where the outer diameter is larger than that at the tip portion and smaller than that at the central portion and capable of introducing blow air downward in an amount of 30% or more of the total blow air amount; and a body provided outside and, at least partly, in contact with the blow nozzle.

Dispositif d'injection d'air constitué par une buse logée dans un corps avec lequel elle est au moins partiellement en contact. La buse comporte un mécanisme de positionnement des orifices d'injection dans au moins une partie d'un élément coulissant librement dans le corps du dispositif. La pointe de la buse présente un diamètre extérieur inférieur à celui de la partie sensiblement médiane de celle-ci et a une forme d'aiguille d'injecteur fermée. Les orifices d'injection sont situés légèrement en retrait de l'extrémité de la pointe, dans une partie présentant un diamètre extérieur supérieur à celui de l'extrémité de la pointe et inférieur à celui de la partie sensiblement médiane de celle-ci, et peuvent diriger vers le bas 30 % ou plus de la quantité totale d'air insufflé.

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