Unlock instant, AI-driven research and patent intelligence for your innovation.

Progressive pressing to form glass articles

A glass product and glass technology, applied in the field of progressive pressing used to form glass products, can solve the problems of inability to form thin glass products, unsuitable for precision glass products, etc.

Active Publication Date: 2011-11-30
CORNING INC
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the aforementioned patents describe the formation of glass articles, none of these methods are suitable for forming uniform thin precision glass articles, such as those used as housings for small electronic devices; such as cell phones, personal music devices, Calculators and other small devices
Methods known in the art cannot form thin glass articles that can be used in these devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Progressive pressing to form glass articles
  • Progressive pressing to form glass articles
  • Progressive pressing to form glass articles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] A large aluminoborosilicate glass sheet with a size of about 100 cm×100 cm and a thickness of 1.3 mm is cut into a workpiece with a size of 7×15 (length×width) for progressive pressing into glass products. Before pressing, the edge of the workpiece is ground to round the corners, such as figure 1 Shown. The workpiece is placed on the mold 21 and the end area 24 is placed on the transition area 24. Then the mold containing the workpiece is placed in the heating furnace, under the plunger 22, which is placed in the heating furnace in advance. Heat the glass to a viscosity of 10 7 -10 13 Stop, hold for 15 minutes. The initial pressure applied is sufficient to cause the glass to begin to deform, and as the pressing continues, the pressure gradually increases. The exact pressure will depend on the glass, the rate of cooling in the pressing equipment, and the thickness of the glass. In the laboratory, a weight of 4 kg placed on the plunger is used for pressing, so that it ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention is directed to a method of forming small, thin glass articles having a thickness of less than 5 mm by the use a plunger and a die, the die having walls, a terminal area and a transition area in contact with both the walls and the transition area is such that the interior distance dimensions of the die gradually decrease as one progresses from the terminal area through the transition area to the walls.

Description

[0001] Cross reference to related applications [0002] This application claims the priority of U.S. Provisional Patent Application No. 61 / 117674 filed on November 25, 2008 in accordance with 35U.S.C.§119(e). Technical field [0003] The present invention relates to a method of manufacturing glass products by pressing in a progressive manner; in particular, the present invention relates to a method capable of forming products with uniform wall thickness and curved edges. Background technique [0004] The pressing of glass products is known in the art and is described in many patent applications, such as US Patent No. 4,362,429 (describes a method and equipment for pressing glass products from molten glass sheets), No. 4,797,144 (describes Methods for pressing and molding optical elements), No. 5,122,177 (describes a method for pressing glass sheets to form curved automotive windows), No. 5,192,353 (descriptions for pressing glass close to the shape of a bird’s nest No. 5,213,603 (d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03B11/10C03B23/02
CPCC03B23/0302C03B11/10C03B11/122C03B2215/68C03B11/07C03B23/0307Y10T428/24264C03B23/02
Inventor M·J·德内卡
Owner CORNING INC