DEVICE AND METHOD FOR PRODUCING GLASS SHEET AND EDGE-ROLLING DEVICE FOR PRODUCING FLOAT GLASS

摘要

The purpose of the present invention is to provide a technique making it possible to produce a glass ribbon by a float process without producing local deformation sections called straws. The present invention pertains to a device and method for producing a glass sheet, in which producing a glass ribbon by causing an outward tensile force to act on both ends of a glass ribbon using a plurality of pairs of top rolls comprises using a composite barrel head which rotates while also pushing peripheral cutting edges against the widthwise ends of the glass ribbon to apply a tensile force to the glass ribbon, and causing the tensile force applied to the end of the glass ribbon by the peripheral cutting edge of the distal end of the composite barrel head to be greater than the tensile force applied to the end of the glass ribbon by the peripheral cutting edge of the rear end of the composite barrel head, thus shaping the glass ribbon while also applying a tensile force to the direction in which the glass ribbon spreads.