Method and apparatus of cooling product within a mold

Details Method and apparatus of cooling product within a mold Method and apparatus of cooling product within a mold

B - Operations, Transporting

29

C

B29C 47/88 (2006.01) B29C 47/12 (2006.01) B29C 49/00 (2006.01) B29C 33/02 (2006.01) B29C 35/16 (2006.01) B29C 49/48 (2006.01)

Patent

CA 2280092

A method of forming a plastic product (P) comprises extruding molten plastic into a mold (3, 4) having a mold wall with product shaping interior face. After shaping the product (P) in the mold (3. 4), the method includes introducing gas via a gas inlet (11) through the mold wall (3) onto the product (P) to cool both the product (P) and the mold (3, 4) and then discharging the gas from the mold at a location (19) remote from the gas inlet (11).

Ce procédé de formation d'un produit en matière plastique (P) consiste à extruder une matière plastique en fusion dans un moule (3, 4) dont la paroi présente une face intérieure de mise en forme du produit. Après mise en forme du produit (P) dans le moule (3, 4), le procédé consiste à introduire du gaz via un orifice d'entrée de gaz (11) ménagé à travers la paroi (3) du moule, en le dirigeant sur le produit (P) afin de refroidir à la fois le produit (P) et le moule (3, 4), puis à évacuer le gaz du moule au niveau d'un emplacement (19) situé à distance de l'orifice d'entrée de gaz (11).

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