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Multiple pane unit having a flexible spacing and sealing assembly

  • US 4,622,249 A
  • Filed: 04/15/1985
  • Issued: 11/11/1986
  • Est. Priority Date: 04/15/1985
  • Status: Expired due to Fees
First Claim
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1. A multiple pane unit comprising a pair of glass sheets maintained in spaced-apart relationship to each other by a spacing and sealing assembly defining a substantially hermetically sealed, insulating air space between the sheets, wherein the spacing and sealing assembly comprises:

  • an outer element self-adhered to the marginal edge periphery of the inner, facing surfaces of the sheets, wherein said outer element is characterized by a water vapor permeability or transmission rate of no greater than about 8 gm./24 hours/1 sq. meter/mil at 100°

    F., 90 percent R.H., as determined by the ASTM E-96-66 Method E test;

    an inner element self-adhered to the marginal edge periphery of the inner, facing surface of the sheets inboard of said outer element, wherein said inner element is characterized by a water vapor permeability or transmission rate of at least about 10 gm./24 hours/1 sq. meter/mil at 100°

    F., 90 percent R.H., as determined by the ASTM E-96-66 Method E test, and wherein further, the adhesive bond between the interfacing surfaces of the sheets and said inner element is characterized by a shear strength of at least about 10 p.s i.;

    a tensile strength of at least about 20 p.s.i.; and

    , an elongation at break of at least about 10% as determined by The Adhesive Bond Strength Test.dehydrating means for absorbing moisture present in the insulation air space.

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