Glass laminates containing low expansion glass
AssigneeCorning Incorporated
InventorsJames Gregory Couillard, Michael Aaron McDonald
Life of this patent
Estimating the term…
Abstract
Apparatus and related methods are provided for a laminate glass article, comprising: a first layer of a first material, the first sheet having a thickness less than 2 mm and a first coefficient of thermal expansion (CTE) measured over a range of from 0-300° C.; a second layer of a second material, the second sheet having a thickness greater than 2 mm and a second CTE greater than the first CTE; and a polymer interlayer between the first and second layers, wherein the first glass sheet has a surface compressive stress greater than 4 MPa.
Claims20
A laminate glass article, comprising:
- a. a first layer of a first transparent or translucent material, the first sheet having a thickness less than 2 mm and a first coefficient of thermal expansion (CTE) measured over a range of from 0-300° C.;
- b. a second layer of a second transparent or translucent material, the second sheet having a thickness greater than 2 mm and a second CTE greater than the first CTE;
- and
- c. a polymer interlayer positioned between the first layer and the second layer and configured to attach the first layer to the second layer,
- d. wherein the first glass sheet has a surface compressive stress greater than 4 MPa.
A fenestration product, comprising:
- a. a glass laminate article having:
- i. a first layer of a first transparent or translucent material, the first sheet having a thickness less than 2 mm and a first coefficient of thermal expansion (CTE) measured over a range of from 0-300° C.;
- ii. a second layer of a second transparent or translucent material, the second sheet having a thickness greater than 2 mm and a second CTE greater than the first CTE;
- and
- iii. a polymer interlayer between the first layer and the second layer;
- and
- b. a frame supporting the laminate edges in a plane,
- c. wherein, via the frame, the first glass sheet of the glass laminate article has an increased surface compressive stress when mounted in the frame than when unmounted.
A method, comprising:
- a. assembling laminate component layers into a stack, wherein the component layers include:
- b. a first layer of a first transparent or translucent material, the first sheet having a thickness less than 2 mm and a first coefficient of thermal expansion (CTE) measured over a range of from 0-300° C.;
- c. a second layer of a second transparent or translucent material, the second sheet having a thickness greater than 2 mm and a second CTE greater than the first CTE;
- and
- d. a polymer interlayer positioned between the first layer and the second layer and configured to attach the first layer to the second layer,
- e. removing any entrapped air from the stack to make curable stack;
- and
- f. curing the curable stack to make a glass laminate article, wherein the first glass sheet has a surface compressive stress greater than 4 MPa.
Dependencies are inferred from the claim text.