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Closure integrity test method for hot-fill bottling operation

  • US 7,105,350 B2
  • Filed: 08/30/2002
  • Issued: 09/12/2006
  • Est. Priority Date: 08/30/2002
  • Status: Active Grant
First Claim
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1. A method for evaluating the integrity of a closure on a hot-filled light transmissive container having an interior and an exterior and wherein the hot-filled light transmissive container is subjected to a pressurized spray of a cooling medium, comprising:

  • providing the cooling medium with an effective amount of a fluorescing dye composition having a fluorescing agent;

    spraying the hot-filled light transmissive container with the cooling medium having the fluorescing dye composition;

    rinsing the exterior of the hot-filled light transmissive container to remove substantially all fluorescing agent therefrom;

    subjecting the hot-filled light transmissive container to ultraviolet light to activate any fluorescing agent that may have migrated past the closure to the interior of the hot-filled light transmissive container; and

    viewing the hot-filled light transmissive container to determine the presence or absence of activated fluorescing agent.

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