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Transparent glazing and use thereof in a chilling chamber door comprising in particular a glazing under vacuum

  • US 7,003,920 B1
  • Filed: 05/25/2000
  • Issued: 02/28/2006
  • Est. Priority Date: 05/25/1999
  • Status: Expired due to Term
First Claim
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1. A refrigerator door enclosure, comprising a metal door frame, a transparent glazing, a handle, and a hinge, said glazing comprising at least one viewing area, wherein the viewing area has deposited on at least one surface thereof an antifrosting adsorbent layer consisting essentially of a porous polymeric coating of a three dimensional network of polyvinylpyrrolidone and polyurethane, and wherein:

  • the antifrosting adsorbent layer has a thickness of at least 14.5 microns and at most 100 microns; and

    said at least one surface and antifrosting adsorbent layer, after being maintained in a closed refrigerated environment at −

    28°

    C., prevents the visible formation of condensation and frosting upon exposure to room temperature and humidity for twelve seconds.

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