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Method for high vacuum sterilization of closures

  • US 6,818,178 B2
  • Filed: 08/01/2002
  • Issued: 11/16/2004
  • Est. Priority Date: 08/16/2001
  • Status: Expired due to Fees
First Claim
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1. A method of conditioning and sterilizing materials, comprising the steps of:

  • placing materials into a sealed vacuum steam autoclave chamber;

    removing air from the chamber during an air removal phase by admitting steam into the chamber and initiating a series of vacuum pulses by vacuum pump means, said pulses including successive pressure-down and pressure-up segments;

    injecting heated air into the chamber during said air removal phase between said pulses after each pressure-down segment and before the next pressure-up segment; and

    sterilizing the materials by introducing steam into the chamber for a period of time sufficient to effect sterilization of the materials.

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