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

Method of bending dissimilar glass compositions

A glass composition and bending technology, applied in glass forming, glass tempering, glass remolding, etc., can solve the problems of surface mismatch, delamination optics, etc.

Active Publication Date: 2021-02-09
AGP AMERICA
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can lead to surface misfits, delamination, and optical defects

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
  • Method of bending dissimilar glass compositions
  • Method of bending dissimilar glass compositions
  • Method of bending dissimilar glass compositions

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0055] In Example 1, the laminated glass includes an outer glass ply and an inner glass ply. The fictive temperature of the outer glass layer received from the glass supplier (T f ) is 570°C, while the imaginary temperature of the inner glass layer received from the glass supplier (T f ) is 600°C. Before being bent, the T f Was changed. By doing so, t f It can vary by as much as 30°C to about 570°C. The outer glass layer is not treated to change its fictive temperature. In this way, the two glass compositions (outer glass ply and inner glass ply) can be bent together into their final shape. The gap between the mating surfaces of the first glass ply and the second glass ply does not exceed 2 millimeters to achieve the desired surface mating. The laminate can then be assembled and subjected to a lamination process.

example 2

[0057] In Example 2, the laminated glass includes an outer glass ply and an inner glass ply. The fictive temperature of the outer glass layer received from the glass supplier (T f ) is 570°C, while the imaginary temperature of the inner glass layer received from the glass supplier (T f ) is 600°C. Before being bent, the T f Was changed. By doing so, t f Vary as much as 30°C to about 600°C. The inner glass layer is not treated to change its fictive temperature. The two glass plies (outer glass ply and inner glass ply) are bent together to their final shape. The gap between the mating surfaces of the first glass ply and the second glass ply is about 1 mm. Laminates are assembled and subjected to a lamination process.

example 3

[0059] In Example 3, the laminated glass includes an outer glass ply and an inner glass ply. The fictive temperature of the outer glass layer received from the glass supplier (T f ) is 570°C, while the imaginary temperature of the inner glass layer received from the glass supplier (T f ) is 600°C. Before being bent, the T f Was changed. By doing so, t f Vary as much as 15°C to about 585°C. By heating the glass to a temperature exceeding 600°C and then cooling it at a rapid cooling rate of 30°C / min, the T f Was changed. By doing so, t f Vary as much as 15°C to about 585°C. The two glasses (an outer glass ply and an inner glass ply) are bent together to their final shape. Laminates are assembled and subjected to a lamination process.

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
compressive strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Glass laminates, comprising more than one glass composition, are becoming increasingly common as the industry moves towards lighter and stronger glazing. Bending dissimilar glass compositions can present problems. A mismatch in the glass viscosity curves, especially in the viscoelastic region of the compositions can result in one layer becoming softer than one of the other layers during the thermal bending process. As a result, economical processes, such as gravity or press bending in which multiple glass layers are simultaneously bent, may not be practical to use forcing the use of more expensive single glass layer bending processes. By thermal treatment processes the fictive temperature of at least one of the glass compositions prior to bending can be shifted to better match the other compositions allowing the glass layers to be simultaneously bent.

Description

technical field [0001] This application relates to the field of laminated glass. Background technique [0002] As the industry strives toward lighter and stronger glass, glass laminates in which multiple layers of glass consist of more than one glass composition are becoming increasingly common. [0003] Glass types that can be used in laminates include, but are not limited to: common soda lime glass types typical in automotive glass, and, aluminosilicate, lithium aluminosilicate, borosilicate, boroaluminosilicate, glass Ceramics and various other inorganic solid amorphous compositions, including those that are opaque, that undergo glass transitions and are classified as glasses. Glass layers may include heat absorbing glass compositions as well as infrared reflective and other types of coatings. [0004] Most glass used for containers, flat glass, and fibers is soda lime glass. Soda lime glass is made from sodium carbonate (soda), lime (calcium carbonate), silicon dioxid...

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): C03C23/00C03B23/023
CPCC03C23/007C03B23/023C03B32/00C03B27/0426C03B27/0528B32B17/10119B32B17/10128B32B17/06B32B17/10036
Inventor 马里奥·阿图罗·曼海姆·阿斯塔特伊万·阿图罗·科内乔简-玛丽·勒尼
Owner AGP AMERICA