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Apparatus and method for forming glass sheet from core glass and cladding glass

A core glass and glass technology, applied in glass manufacturing equipment, glass molding, glass molding, etc., can solve problems such as defects, fluctuations in cladding flow, uneven thickness distribution of finished glass sheets, etc.

Inactive Publication Date: 2018-01-26
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the flow of the two streams of glass is not carefully controlled, poor or uneven flow configurations can result
Additionally, air can undesirably become trapped in the interface between molten glass streams and / or cause fluctuations in the cladding stream, resulting in non-uniform thickness distribution of the finished glass sheet

Method used

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  • Apparatus and method for forming glass sheet from core glass and cladding glass
  • Apparatus and method for forming glass sheet from core glass and cladding glass
  • Apparatus and method for forming glass sheet from core glass and cladding glass

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Embodiment Construction

[0018] The fusion lamination process of U.S. Patent No. 4,214,886 (the entire disclosure of which is incorporated herein by reference) combines two glasses with different compositions into a dual (2) or triple (3) lamination piece. It has been determined, for example, through oil model simulations, liquid polymer simulations, data modeling, and observation that the glass flow or flow falls from the upper tube (which provides the source of cladding glass or outer layer glass) to the lower tube (the The distance above the glass in the downtube provides the core glass source) is important in maintaining good glass quality in the final laminate. In general, it is believed that two streams of liquid glass must have nearly equal velocities when they meet. The drop distance plus the velocity of the liquid glass establishes the velocity of the upper glass stream.

[0019] The velocity of the downflow of glass in turn is a function, at least in part, of the velocity of the liquid gla...

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Abstract

A glass forming apparatus and method includes a weir (204) on at least a first side of a molten core glass storage tank (202). The weir (204) includes an inclined surface (206) that slopes downward in a vertical direction Y in the intended direction of molten glass flow F while extending in a horizontal direction X away from the molten core glass sump. The source of molten cladding glass is arranged above the glass forming apparatus such that as the molten cladding glass (400) flows downward and the molten core glass (300) overflows the weir, the molten cladding glass falls onto the molten core glass At the highest upstream contact point P of , the highest upstream contact point is located directly above the inclined surface of the weir.

Description

[0001] Cross References to Related Applications [0002] This application claims the priority right of US provisional application No. 61 / 769256 filed on February 26, 2013 under the patent law. technical field [0003] The present disclosure relates generally to an apparatus and method for forming glass sheets, and more particularly to an apparatus and method for forming glass sheets in the manufacture of laminated fused glass. Background technique [0004] It is known that laminated glass sheets can be produced in a fusion drawing process by flowing a cladding layer of molten glass over a core layer of molten glass, such as disclosed in U.S. Patent No. 4,214,886, the entire disclosure of which is incorporated by reference way incorporated into this article. However, if the flow of the two streams of glass is not carefully controlled, poor or uneven flow configurations can result. In addition, air can undesirably become trapped in the interface between molten glass streams ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B17/02C03B17/06
CPCC03B17/02C03B17/064
Inventor 阿列克谢·谢尔盖耶维奇·阿莫索夫欧鲁斯·耐力·博拉塔夫弗兰克·托马斯·科波拉维亚迪斯拉夫·尤里耶维奇·戈利亚京史蒂芬·迈克尔·米利洛乔治·克林顿·谢伊
Owner CORNING INC