US 6,582,799 B1Granted

Laminated transparency

AssigneePPG Industries Ohio, Inc.

InventorsC. Edward Brown, William S. Cunningham, Michael T. Fecik, Vaughn R. Imler, Alana R. Zajdel, William B. Zimmerman

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Abstract

A laminated article is provided which is particularly well adapted for use as an automotive sidelite. The laminated article includes a first ply, a second ply and an interlayer located between the two plies, with the two plies and interlayer dimensioned such that the laminated article has a total thickness of about 4.0-6.0 mm, more preferably of about 4.0-5.0 mm. The plies are preferably heat strengthened glass in the thickness range of about 1.0-3.0 mm. The interlayer is preferably a plastic material, such as polyvinyl butyral, and has a thickness in the range of about 0.50-0.80 mm. A coating, such as a solar control coating or electroconductive coating, can be formed or deposited on one or more surfaces of the plies and/or interlayers. A method and apparatus are also provided for producing a laminated sidelite of the invention.

Claims5

Dependent claims

A laminated sidelite, comprising:

a first heat treated glass ply having a concave surface with a predetermined concave shape and a first set of dimensions, the first glass ply having a thickness ranging from 1.6 mm to 2.1 mm;
a functional coating selected from MSVD coatings, CVD coatings, spray pyrolysis coatings and sol gel coatings and located on at least a portion of the first glass ply concave surface, the functional coating being a solar control coating having at least one dielectric layer and at least one infrared reflective layer;
a second heat treated glass ply having a convex surface with a predetermined convex shape and a second set of dimensions generally corresponding to the first set of dimensions and having a thickness ranging from 1.6 mm to 2.1 mm;
and
a polyvinyl butyral interlayer located between the first and second glass plies, the interlayer having a thickness of 0.50 mm to 0.80 mm, with the functional coating facing the interlayer, and with the laminated sidelite having a total thickness ranging from 4.0 mm to 5.0 mm.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/512,852Filed 25 Feb 2000 · us provisional application
Priority: 2 Jun 1999
Granted: 24 Jun 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification22 codes

C03C 17/36
With at least two coatings having different compositions: at least one coating being a metal
B32B 17/10036
Characterized by the number, the constitution or treatment of glass sheets: comprising two outer glass sheets
B32B 17/10091
Properties of the bulk of a glass sheet: thermally hardened
B32B 17/10174
Functional features of the laminated safety glass or glazing: coatings of a metallic or dielectric material on a constituent layer of glass or polymer