Injection molding method
AssigneeSubaru Corporation
InventorTsutomu KAJIYAMA
Life of this patent
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Abstract
An injection molding method uses a die with a cavity into which molten resin is to be injected to fill the cavity. The die has a shape that causes the molten resin injected into the cavity to branch and merge. The injection molding method includes providing bubbles into the molten resin before the molten resin is injected, generating fine bubbles with the provided bubbles before the molten resin is injected, injecting the molten resin containing the fine bubbles, and bursting the fine bubbles of the injected molten resin containing the fine bubbles in a merging location where the molten resin merges.
Claims14
An injection molding method using a die with a cavity into which molten resin is to be injected to fill the cavity, the die having a shape that causes the molten resin injected into the cavity to branch and merge, the injection molding method comprising:
- providing bubbles into the molten resin before the molten resin is injected;
- generating fine bubbles with the provided bubbles before the molten resin is injected;
- injecting the molten resin containing the fine bubbles;
- and
- bursting the fine bubbles of the injected molten resin containing the fine bubbles in a merging location where the molten resin merges.
Dependencies are inferred from the claim text.