Heat strengthened glass is treated to have a break pattern that permits the fractured glass sheet to be retained within an installation frame by moving a glass sheet through a heating area, force cooling the side portions of the moving sheet while cooling the intermediate portions of the sheet at a lesser...http://www.google.es/patents/US4400194?utm_source=gb-gplus-sharePatente US4400194 - Method and apparatus for producing heat-strengthened glass sheets having improved break patterns
Method and apparatus for producing heat-strengthened glass sheets having ...
