Method for breaking a glass sheet

Details Method for breaking a glass sheet Method for breaking a glass sheet

1994-09-19

1997-04-22

Czaja, Donald E.

Glass manufacturing

Processes

Glass preform treating

65 601, 83879, 2171216, G03B 2102

Patent

active

056225407

ABSTRACT:
A glass breaking system is provided for breaking large sheets of glass into small sheets. A protective coating is applied to the glass sheet. A portion of the protective coating is then selectively removed, preferably by a laser beam, so that a portion of the surface of the coated side of the sheet is exposed. The glass sheet is then broken using laser separation techniques to break the glass sheet in the exposed area.

REFERENCES:
patent: 3453097 (1969-07-01), Hafner
patent: 3695497 (1972-10-01), Dear
patent: 4544395 (1985-10-01), Evans
patent: 4606747 (1986-08-01), Steinhoff
patent: 5084604 (1992-01-01), Dekker et al.
patent: 5154334 (1992-10-01), Dekker et al.
patent: 5254833 (1993-10-01), Okiyami
"Controlled Separation of Brittle Materials Using a Laser", written by R.M. Lumley, Western Electric Co., Engineering Research Center, published in the Ceramic Bulletin, vol. 48, No. 9 (1969), pp. 850-854.

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