Vented mold and use thereof

Details Vented mold and use thereof Vented mold and use thereof

B - Operations, Transporting

29

C

B29C 44/38 (2006.01) B29C 33/10 (2006.01) B29C 44/34 (2006.01)

Patent

CA 2077363

A novel method of molding an article includes providing a mould with a vent of a pre-determined size such that, due to the difference in viscosities, gases to be vented from the mold may easily pass through the vent while the material to be molded cannot quickly pass through the vent. In fact, the vent is designed such that the material to be molded which enters the vent, does not exit the end of the vent. In the most preferred embodiment, the vent is in the form of a thin ribbon-like groove so that the material to be molded which does enter the vent forms a thin ribbon of extruded material which need not be removed prior to a finish cover being applied to the molded article.

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