Injection molding techniques utilizing interlocking knit lines

Details Injection molding techniques utilizing interlocking knit lines Injection molding techniques utilizing interlocking knit lines

B - Operations, Transporting

29

C

B29C 33/42 (2006.01) B29C 45/00 (2006.01) B29C 45/37 (2006.01)

Patent

CA 2386524

The present invention provides a process and apparatus for injection molding articles in which first (316A) and second (316B) resin streams within the mold cavity (312) interact to form an interlocking knit line geometry (320). The process includes the steps of: a) providing a mold defining a mold cavity; (b) providing first and second resin streams within the mold cavity, each resin stream having a flow front; and c) causing the flow fronts to interact to form an interlocking knit line geometry.

L'invention concerne un procédé et un appareil permettant de mouler des articles par injection, un premier (316A) et un second (316B) courants de résine coulés dans la cavité de moulage (312) interagissant, de façon à former une géométrie (320) de ligne de soudure interverrouillée. Ledit procédé consiste a) à fournir un moule définissant une cavité de moulage; (b) à couler un premier et un second courants de résine dans ladite cavité de moulage, chaque jet de résine présentant un avant de jet; c) et à amener les avants de jets à interagir de façon à former une géométrie de ligne de soudure interverrouillée.

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