Asahi Glass Company, Limited

Toru Kamihori

Motoichi Iga

Atsushi Inoue

Yoshihiro Shiraishi

Itsuo Matsumoto

Nobuyuki Ban

Yasuji Fukasawa

Ryosuke Akagi

An apparatusfor producing a plate glass, comprising a bathfor float-forming for reserving a molten metalfor forming a band-shaped plate glass having a predetermined thickness by feeding a molten glass ribbonin a predetermined direction on the molten metal, and a pair of partition wallsprovided substantially above left and right edgesof the molten glass ribbonand substantially along the edgesto partition a space above a bath surface of the molten metal into an upper space A above a region covered with the molten glass ribbonand upper spaces B above regions not covered with the molten glass ribbonwherein the partition wallseach has a vertically dividable structure dividable into an upper partition wallA and a lower partition wallB, and the lower partition wallB is constituted by strip-shaped lower strip membersprovided continuously to each other in a lateral direction, and the strip membersare configured to be removable or openable from the upper partition wallA.

Apparatus and method for manufacturing plate glass

The present invention relates to production of a flat glass, which can improve the surface smoothness of a flat glass in the moving direction and which prevents formation of stripes on the flat glass. A fixed bedcomprising a plurality of supportsarranged in such a state that they will not move at least in a direction in parallel with the moving direction of a glass ribbon, and having groovesB to let loose the steam generated by vaporization of a steam film forming agent formed between the respective supports, is used, and the amount of the steam let loose from the grooves is adjusted in accordance with the glass temperature distribution in the moving direction of the glass ribbonwhich moves on the fixed bed

Process and apparatus for producing flat glass

An apparatusfor producing a plate glass, comprising a bathfor float-forming for reserving a molten metalfor forming a band-shaped plate glass having a predetermined thickness by feeding a molten glass ribbonin a predetermined direction on the molten metaland a pair of partition wallsprovided substantially above left and right edgesof the molten glass ribbonand substantially along the edgesto partition a space above a bath surface of the molten metal into an upper space A above a region covered with the molten glass ribbonand upper spaces B above regions not covered with the molten glass ribbonwherein the partition wallseach has a vertically dividable structure dividable into an upper partition wallA and a lower partition wallB, and the lower partition wallB is constituted by strip-shaped lower strip membersprovided continuously to each other in a lateral direction, and the strip membersare configured to be removable or openable from the upper partition wallA.

The present invention relates to production of a flat glass, which can improve the surface smoothness of a flat glass in the moving direction and which prevents formation of stripes on the flat glass. A fixed bedcomprising a plurality of supportsarranged in such a state that they will not move at least in a direction in parallel with the moving direction of a glass ribbonand having groovesB to let loose the steam generated by vaporization of a steam film forming agent formed between the respective supportsis used, and the amount of the steam let loose from the grooves is adjusted in accordance with the glass temperature distribution in the moving direction of the glass ribbonwhich moves on the fixed bed

Process for producing flat glass

The present invention relates to improvement in a method of supplying a glass ribbon in a molten state to be supplied from a glass melting furnace to a flat glass forming apparatus, which can further improve the smoothness of a flat glass after formed. A glass ribbonsupplied from a glass melting furnaceto a flat glass forming apparatusis stretched between one pair of tension rollersA andB in an S-shape and the tension rollersA andB are rotated while applying a surface pressure to the glass ribbonface via a thin layer of a steam film generated by vaporization of a steam film forming agent. By means of rotation of the tension rollersA andB, the face of the glass ribbonstill in a molten state is polished via the steam film

A method and apparatus for producing a sheet glass includes pouring a molten glass into a bathtub containing a molten metal so that it will form a molten glass stream having a constant width in a high temperature zone on the molten metal bath. The molten glass stream in the form of a ribbon having a desired thickness is led into a subsequent shaping zone, wherein, in the high temperature zone, the molten metal level in the vicinity of the edge of the molten glass stream is differentiated from the molten metal level at the center of the glass stream to complement a force of the molten glass stream for expanding or contracting in the width direction and thereby to maintain the edge at a predetermined position.

Method and apparatus for producing a sheet glass

A method for holding an edge of a molten glass flow, comprising forming a molten glass flow by continuously feeding molten glass on a bath surface of molten metal contained in a vessel, holding an edge of the molten glass flow in a width direction thereof when advancing the molten glass flow to draw the molten glass flow in a glass ribbon having a target thickness, and controlling a flow of the molten metal so that a bath surface level in height of the molten metal in the vicinity of the edge of the molten glass flow is different from that of the molten metal in the vicinity of a central portion of the molten glass flow in the width direction thereof, whereby a force to spread or narrow the molten glass flow in the width direction is compensated so as to hold the edge of the molten glass flow at a predetermined position.

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Kanagawa, Japan

Toru Kamihori