JP2010235356A - Method for manufacturing metal wired flat glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for obtaining a high quality metal wired flat glass having a smooth surface without requiring a polishing process which causes cost increase in the production of a metal wired flat glass by a roll forming method. <P>SOLUTION: In the method for manufacturing a metal wired flat glass in which a metal wire is inserted into the flat glass by the roll forming method, the rolls consist of a base material having quality or structure capable of containing liquid in the inside, the molten glass is formed by rotating the pair of rolls while supplying a vapor film of liquid therebetween and a metal wire is inserted as well. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for producing a metal wire-containing plate glass by a roll-out method.

  Various methods for producing plate glass are known. Particularly popular are the tin float method and the rollout method.

  The tin float method is currently most widely used as a mass production method for sheet glass, and is a method in which glass is floated on molten tin and stretch-formed. Although this method is suitable for producing large-area plate glass, the metal tin that is solid at room temperature must be kept in a molten state at all times, so that the energy required to keep the kiln warm is enormous.

  The roll-out method is generally a method in which a molten glass is sandwiched between metal rolls and molded, and has an advantage that glass molding can be performed with a simple apparatus configuration at a lower cost than the tin float method. However, since the molten glass is rapidly cooled by contact with the metal roll, it is inevitable that contact marks, wrinkles, and undulations remain on the formed glass, and a polishing process is required to obtain a high-quality sheet glass product. It is essential.

  For these reasons, large glass plates for construction and the like are almost always manufactured by a tin float method. However, a metal wire-containing plate glass such as a wire-containing plate glass or a mesh-containing plate glass needs to insert a metal wire into the molten glass, and is difficult to manufacture by a tin float method. For this reason, as shown in FIG. 1, the metal wire-containing plate glass is manufactured by a roll-out method by simultaneously inserting metal wires during roll forming (see, for example, Patent Document 1).

JP 2003-12341 A

  As described above, in the existing rollout method, a metal roll is used. Although the surface of the metal roll is smooth, the molten glass is rapidly cooled by contact with the metal roll, so that wrinkles and undulations remain in the formed glass in addition to the contact marks with the roll. Therefore, after roll forming, a polishing step is essential when the glass is cooled. This polishing naturally requires both the front and back surfaces of the glass, and there is a problem that the cost becomes extremely high as compared with ordinary tin float glass.

  In addition, there is a problem that internal stress occurs due to rapid cooling of the surface by a metal roll. This internal stress remains after the glass is cooled, and after a period of time, minute cracks are generated in the glass portion around the metal wire due to the difference in expansion coefficient between the glass and the metal wire. This causes a decrease in strength of the glass and natural cracking, which is a problem.

    The present invention is a method of manufacturing a metal wire-containing plate glass by a roll-out method in which a metal wire is inserted into the plate glass, and the roll is made of a base material made of a material or a structure that can contain a liquid inside, A molten glass is formed between liquid rolls through a vapor film of liquid while rotating a pair of rolls, and a metal wire is inserted.

  Moreover, the liquid which produces | generates a vapor | steam film | membrane is water, It is a manufacturing method of said metal wire containing plate glass.

  ADVANTAGE OF THE INVENTION According to this invention, in manufacture of the metal wire containing plate glass by the roll-out method, the high quality metal wire containing plate glass with the smooth surface can be obtained, without passing through the grinding | polishing process which causes high cost.

  The present invention is a method of manufacturing a metal wire-containing plate glass by a roll-out method in which a metal wire is inserted into the plate glass, and the roll is made of a base material made of a material or a structure that can contain a liquid inside, A molten glass is formed between liquid rolls through a vapor film of liquid while rotating a pair of rolls, and a metal wire is inserted.

  FIG. 1 shows a method for producing glass with a metal wire by the roll-out method. The molten glass 2 melted in the glass melting tank 1 is formed into a plate shape by a roll 4. At this time, the metal wire 3 is simultaneously wound from above to produce a metal wire-containing plate glass into which the metal wire is inserted. In the case where there are a plurality of metal wires parallel to each other, a wire-containing plate glass, a crossed net-like glass plate is called a net-containing plate glass, and since it has an effect of preventing the broken glass from scattering, various uses are considered. ing.

  As described above, in the existing technology, this roll is made of metal. Therefore, after roll forming, when the glass is cooled, a polishing step is indispensable, and the strength of the glass is reduced and natural cracks are caused.

  In the present invention, the roll 4 is made of a base material made of a material or structure capable of containing a liquid, and molten glass is formed between the rolls via a liquid vapor film while rotating the pair of rolls. And

  As for the roll base material that can contain the liquid on the roll surface, examples of the material include porous inorganic materials, metal materials, carbon materials, paper, and fibers. The properties required for these materials are heat resistance against radiant heat from the molten glass 2 received through the vapor film, water content that can hold a sufficient amount of liquid on the rotating roll, water absorption speed and surface Flatness etc.

  At this time, it is desirable that the pair of rolls 4 can freely set the distance from the glass melting tank 1, the roll rotation speed, and the roll interval, and, as shown in FIG. Therefore, one or more pairs of rolls may be arranged.

  In roll forming, the roll applies a tensile stress to the molten glass by rotation and also has a role of forming while stretching. When the vapor film is interposed, the roll and the molten glass are not in contact with each other, so that a tensile stress cannot be applied. In this case, a device may be devised such that a tensile stress is applied only to both end portions of the glass that does not become a product, for example, a material that does not contain liquid is used at both end portions of the roll.

It is a schematic diagram of the manufacturing method by the rollout method of plate glass containing a metal wire. It is a schematic diagram in the case of using a plurality of roll pairs.

DESCRIPTION OF SYMBOLS 1 Glass melting tank 2 Molten glass 3 Metal wire 4 Roll 5 Glass with metal wire 6 Multistage roll

Claims (2)

A metal wire is inserted into a plate glass, and a method for producing a metal wire-containing plate glass by a roll-out method, wherein the roll is made of a base material made of a material or a structure capable of containing a liquid, and a pair of rolls is formed. A method for producing sheet glass containing metal wire, comprising forming molten glass between rolls through a vapor film of liquid while rotating and inserting a metal wire. The method for producing a metal-lined plate glass according to claim 1, wherein the liquid that forms the vapor film is water.