Glass toughening methods

Details Glass toughening methods Glass toughening methods

C - Chemistry, Metallurgy

03

B

49/89

C03B 25/00 (2006.01) C03B 27/012 (2006.01) C03B 27/02 (2006.01) C03B 27/052 (2006.01) C03B 29/10 (2006.01) C03B 35/16 (2006.01)

Patent

CA 1043569

ABSTRACT OF THE DISCLOSURE This invention relates to the toughening of glass sheets. A glass sheet is heated and may be bent before being lowered into a chilling liquid to quench the sheet. The leading edge of the sheet which contacts the chilling liquid first is hotter than the trailing edge of the sheet and preferably a linear temperature gradient exists up the sheet. Glass sheets toughened by this method are used in the manufacture of motor vehicle and aircraft windscreens.

204724

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