Method of preparing spherical moldings

B - Operations – Transporting – 29 – C

Patent

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B29C 45/00 (2006.01) B29C 33/00 (2006.01) B29C 33/42 (2006.01) B29C 37/00 (2006.01) B29C 45/17 (2006.01) B29C 45/26 (2006.01) B29C 45/27 (2006.01) B29C 45/37 (2006.01) B29C 59/02 (2006.01) B29C 69/00 (2006.01) B29C 31/00 (2006.01)

Patent

CA 2175690

The present invention obtains a method which makes it possible to simultaneously injection-mold a number of spherical moldings without causing increase of runner loss, and is a method of preparing spherical moldings by coupling molding forming parts with each other through a bridge of 0.1 to 10 mm2 in sectional area for feeding molten resin, arranging a structure in which a plurality of molding forming parts are coupled with each other through the aforementioned bridge with respect to one gate, and performing molding, thereby obtaining a sphere series in which a plurality of spherical moldings 1 are coupled with each other through a bridge part 2.

Procédé de fabrication de pièces moulées sphéroïdales, selon lequel une pluralité de pièces moulées sphéroïdales sont moulées par injection en même temps sans augmentation des pertes de coulée. Dans le dispositif de moulage, des parties des pièces moulées sont interconnectées par des ponts par lesquels s'écoule la résine fondue. La superficie de la section de ces ponts est comprise entre 0,1 et 10 mm?2¿ et une pluralité de parties des pièces moulées sont connectées à une entrée par ces ponts. On obtient ainsi une chaîne de corps sphériques constituée d'une pluralité de pièces moulées sphéroïdales (1) interconnectées par des ponts (2).

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