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BLOW MOLDING APPARATUS AND BLOW MOLDING METHOD

  • US 20170008216A1
  • Filed: 11/17/2014
  • Published: 01/12/2017
  • Est. Priority Date: 01/30/2014
  • Status: Active Grant
First Claim
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1. A blow molding apparatus that supplies a pressurized liquid into a bottomed tubular preform fitted to a mold used for blow molding and molds the preform into a shape conforming to a cavity of the mold, the blow molding apparatus comprising:

  • a blow nozzle fitted to a mouth tubular portion of the preform;

    a plunger pump configured to supply the pressurized liquid into the preform through the blow nozzle; and

    a controller configured to change an actuation rate and an actuation force of the plunger pump during the supply of the pressurized liquid into the preform to regulate a peak pressure of the liquid supplied into the preform to be from 3.5 MPa to 5.0 MPa.

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