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Molding method for plate glass

A technology of plate glass and molten glass, applied in the field of plate glass forming, can solve problems such as thinning of thickness, and achieve the effect of improving flatness

Inactive Publication Date: 2016-07-20
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This problem becomes more noticeable as the thickness of the target becomes thinner

Method used

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  • Molding method for plate glass
  • Molding method for plate glass
  • Molding method for plate glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0093] Hereinafter, although an Example etc. demonstrate this invention concretely, this invention is not limited to these examples.

[0094] In Examples 1 to 4, the relationship between the wettability of the sintered body to the molten glass and the impurities contained in the sintered body was examined.

[0095] The test pieces and test panels for evaluation were manufactured by processing different silicon nitride (Si 3 N 4 ) Sintered body of ceramics.

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Abstract

The invention provides a molding method for plate glass. The method has a procedure that a support roll is used to suppress shrinkage in the width direction of a plate-shaped molten glass ribbon. The support roll has in the tip section thereof a rotating member that comes in contact with the molten glass ribbon. The rotating member does not have an internal coolant flowpath and is formed using a ceramic material. The outer peripheral surface of the rotating member has a whole peripheral bent cross section shape protruding towards the radial outward. The support roll is used in an area where the viscosity of the molten glass ribbon is 106.5-1013dPs.s.

Description

[0001] This application is submitted on April 21, 2014, the application number is 201280051763.8, and the title of the invention is "backup roll, forming device of plate glass with support roll, and forming method of plate glass using support roll". Divisional application. technical field [0002] The invention relates to a forming method of plate glass. Background technique [0003] As a forming method for plate glass, the float method is widely used. The float method is a method in which molten glass introduced onto molten metal (for example, molten tin) accommodated in a bath flows in a predetermined direction to form a ribbon-like molten glass ribbon. After the molten glass ribbon is cooled while flowing in the horizontal direction, it is pulled up from the molten metal by a lift-up roll, annealed in an annealing furnace, and becomes sheet glass. After the sheet glass is carried out from the annealing furnace, it is cut into a predetermined size and shape by a cutting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B18/06C03B17/06
CPCC03B18/06C03B17/064C03B18/22
Inventor 富田成明
Owner ASAHI GLASS CO LTD
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