Molten glass supply apparatus and method for producing glass molded article

A technology of molten glass and supply device, applied in glass manufacturing equipment, glass production, manufacturing tools, etc., can solve problems such as poor fluidity of molten glass

Active Publication Date: 2009-01-28
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the field of manufacturing glass molded products made of high-viscosity glass, if such a structure is adopted, it is considered that the fluidity of the molten glass will deteriorate, which will inevitably lead to extremely significant damage to the forming operation of the form

Method used

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  • Molten glass supply apparatus and method for producing glass molded article
  • Molten glass supply apparatus and method for producing glass molded article
  • Molten glass supply apparatus and method for producing glass molded article

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Embodiment Construction

[0116] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0117] First, based on FIG. 1, the schematic structure of the molten-glass supply apparatus which concerns on 1st Embodiment of this invention is demonstrated. As shown in Fig. 1, the molten glass supply device 1 is provided with: a melting kiln 2 equipped with an upstream end and a molten glass raw material, and the highly viscous molten glass (having a temperature commensurate with a viscosity of 1000 poises) flowing out from the melting kiln 2 is 1350° C. or higher) is supplied to the forming body of the forming device 3 for forming flat glass through the supply flow path 4 by the overflow wire drawing method. Specifically, the high-viscosity glass supplied here can be used by mass %, for example, containing SiO 2 60%, Al 2 o 3 15%, B 2 o 3 10%, CaO5%, BaO5%, SrO5% composition, the temperature corresponding to the viscosity of 1000 poise is about 1450 ℃ non-alka...

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Abstract

A molten glass supply apparatus comprising multiple agitation vessels (K1,K2) disposed adjacent to each other in the up- to downstream direction along supply flow channel (4) for supply of molten glass having flowed out from fusion kiln (2) as a molten glass supply source to molding unit (3), wherein among at least two agitation vessels (K1,K2) disposed adjacent to each other, at least either superior portion or inferior portion of upstream side agitation vessel (K1) is provided with inflow aperture (M1) while the other portion is provided with outflow aperture (N1), and wherein inflow aperture (M2) and outflow aperture (N2) of the downstream side agitation vessel (K2) are provided in the same top and bottom relationship with those of the upstream side agitation vessel (K1), and wherein the outflow aperture (N1) of the upstream side agitation vessel (K1) is connected through communication channel (R1) to the inflow aperture (M2) of the downstream side agitation vessel (K2) opposed to the outflow aperture (N1) in the top and bottom relationship.

Description

technical field [0001] The present invention relates to a molten glass supply device and a method for manufacturing glass molded articles, and more specifically, to an improvement of a supply channel for supplying molten glass from a melting kiln to a forming device, and to supplying the molten glass from a melting furnace to a forming device through a supply channel. Provides improvements in the technology used to manufacture glass moldings. Background technique [0002] In recent years, glass substrates of flat-panel displays represented by liquid crystal displays (LCDs) or electroluminescent displays (ELDs), charge-coupled devices (CCDs), equal-magnification proximity solid-state imaging devices (CISs), CMOS image sensors, etc. Demand for cover glass covers for image sensors, laser diodes, etc., and glass substrates for hard disks and filters is rapidly expanding. [0003] On the other hand, so-called low-viscosity glass is widely known as optical glass, window plate gla...

Claims

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Application Information

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IPC IPC(8): C03B5/18
CPCY02P40/57
Inventor 笘本雅博织田英孝西浦德作
Owner NIPPON ELECTRIC GLASS CO LTD
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