Injection molding method and injection molding machine
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United States of America Patent
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Mar 16, 2021
Grant Date -
Feb 23, 2017
app pub date -
Jun 6, 2014
filing date -
Jun 6, 2014
priority date (Note) -
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Abstract
This injection molding method uses an injection molding machine for two-material molding, which comprises a first mold part that is provided with a cavity and a second mold part that is provided with a cavity and is arranged in tandem with the first mold part. This injection molding method comprises: a first molding step wherein a material is injected into the cavity of the first mold part and the material in the cavity is compressed; and a second molding step wherein a material is injected into the cavity of the second mold part. A pressure, which is generated in the second mold part by injecting the material into the cavity in the second molding step, acts on the first mold part, and a compressive force is applied to the material in the cavity in the first molding step.
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