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US 2021/0284565 A1Published application
Glass panel with reduced extension strain
OwnerHervé THELLIER, Thierry OLIVIERinventors
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OwnerHervé THELLIER, Thierry OLIVIERinventors
Estimating the term…
A device and a method for bending and cooling sheets of glass including bending the glass by gravity on a gravity support during which the glass rests on the gravity support in the peripheral zone constituted of the 50 mm from the edge of its first principal face, then separating the glass from the gravity support when the glass is at more than 560° C., then cooling the glass during which its first principal face is free of any contact in its peripheral zone, between a temperature termed the upper homogeneous temperature, of at least 560° C., and a temperature termed the lower homogeneous temperature, of at most 500° C., termed the critical temperature range, the zone of the first principal face at a distance greater than 200 mm from the edge being at a temperature at least equal to that of the peripheral zone at the moment when the peripheral zone reaches the upper homogeneous temperature.
A method of bending and of cooling a sheet of glass or a stack of sheets of glass, comprising a first principal face and a second principal face, said method comprising bending the glass by gravity on a gravity support during which the glass rests on the gravity support in a peripheral zone of the first principal face, said peripheral zone being constituted of 50 mm from an edge of the first principal face, then separating the glass from the gravity support, then cooling the glass during which the first principal face is free of any contact in the peripheral zone, in a critical temperature range that is between an upper homogeneous temperature, of at least 560° C., and a lower homogeneous temperature, of at most 500° C., a zone of the first principal face at a distance greater than 200 mm from the edge being at a temperature at least equal to that of the peripheral zone at the moment when the peripheral zone reaches the upper homogeneous temperature.
A device for bending and cooling glass in the form of a sheet or a stack of sheets, comprising a first principal face and a second principal face, the device comprising a gravity support able to bend the glass at its plastic deformation temperature while supporting the glass in a peripheral zone constituted of the 50 mm of the first principal face from the edge, a cooling specific support without contact with the peripheral zone, and a separation and transfer mechanism adapted to separate the glass from the gravity support and release the glass onto the cooling specific support, said separation and transfer mechanism comprising a separation upper forming mold provided with suction enabling the glass to be held against it by the second principal face, said separation upper forming mold being able to take charge of the glass and offload the glass from the gravity support.
Dependencies are inferred from the claim text.