Laminated glass and glass plate used for producing laminated glass
AssigneeAsahi Glass Company, Limited
InventorMasayuki Takahara
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AssigneeAsahi Glass Company, Limited
InventorMasayuki Takahara
Estimating the term…
A glass plate has a thickness of from 1.5 to 3 mm, and it has a peripheral region having a predetermined width along the edge line of the plate and having its principal stress difference of compressive properties, an intermediate region having a predetermined width adjacent to an inner periphery of the peripheral region and having its principal stress difference of tensile properties and a central region occupying an inner peripheral side of the intermediate region wherein the central region has an averaged surface compression stress of from 15 to 35 MPa, and the peripheral region has a width of from 5 to 20 mm; the maximum value of the principal stress difference averaged in a thickness direction of the plate along its center line is from 20 to 40 MPa, and the minimum value of the principal stress difference averaged in a thickness direction along the center line is from 8 to 25 MPa.
A glass plate comprising:
Dependencies are inferred from the claim text.