Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Manufacturing method of laminated glass

A manufacturing method, technology of laminated glass, applied in the direction of adhesive heating bonding method, chemical instrument and method, glass/slag layered product, etc.

Inactive Publication Date: 2015-12-02
BRIDGESTONE CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using EVA-based interlayers in laminates, there are some limitations

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
  • Manufacturing method of laminated glass
  • Manufacturing method of laminated glass
  • Manufacturing method of laminated glass

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] Now, the method for producing laminated glass of the present invention will be described with reference to the accompanying drawings. figure 1 is a schematic cross-sectional view of an exemplary embodiment for explaining the method for producing laminated glass of the present invention. exist figure 1 In the laminated glass, the laminated body 20 including the interlayer film 12 sandwiched between two glass plates 11A and 11B is prepared, the laminated body is pre-compressed under heat and pressure, and then heated to make it prepared by crosslinking.

[0040]As the glass plates 11A and 11B in the manufacturing method of the laminated glass of the present invention, any transparent glass plate, for example, a green glass plate, a silicate glass plate, an inorganic glass plate, and an uncolored transparent glass plate can be used. Alternatively, plastics such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethylenebutyrate (polyethylenebutyra...

Embodiment 1-14， comparative example 1-10

[0092] 1. Preparation of interlayer

[0093] Compositions having formulations as described in Table 1 and Table 2 were used as raw materials and calendered. Thus, a molded article was prepared. The composition was kneaded for 15 minutes at 80°C, the calender roll temperature was set to 80°C, and the processing speed was set to 5 m / min. After that, one surface of the molded product is embossed with a small embossing roller. Thus, the EVA layers (size: 1000 mm×1000 mm) of Examples 1-14 and Comparative Examples 1-10 having the surface thicknesses and surface properties (arithmetic mean roughness Ra) shown in Tables 1 and 2 were obtained. Subsequently, EVA layers having the number of layers shown in Table 1 and Table 2 were laminated one by one to prepare an intermediate film.

[0094] The viscosity of the EVA layer was measured using a capillary rheometer by applying thereto a predetermined shear rate of 0.1 mm / min. The surface property (arithmetic mean roughness Ra) of the E...

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
melt flow indexaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A process for manufacturing a laminated glass including an intermediate film containing EVA as a main component is provided. In the process, the laminated glass is manufactured through a step wherein a pressure is applied to a laminate by nip rolls. By the process, bubble formation in the laminated glass can be satisfactorily prevented. The process for manufacturing the laminated glass is characterized by including a step for preparing a laminate 20 containing an intermediate film 12 having at least one ethylene-vinyl acetate copolymer layer including ethylene-vinyl acetate copolymer and a crosslinking agent, having a melt viscosity at 70°C of 2 × 10 5 Pa · s or less, an arithmetic mean estimation Ra (JIS-B0601(2001)) of at least on one surface in the range of 5 to 20 µ m, and a mean thickness of 0.5 mm or more, and at least two glass plates, the intermediate film interposed between the at least two glass plates; a step for compacting the laminate 20 by being pressurized by nip rolls 34 after being heated; and a step for integrating the laminate by crosslinking by heating after the step for compacting the laminate.

Description

technical field [0001] The present invention relates to a production method of laminated glass including an interlayer film containing ethylene-vinyl acetate copolymer as a main component, and more particularly to a production method of laminated glass including a pre-pressing step in which a laminate is pressed by rolls method. Background technique [0002] To date, laminated glass has been widely used as window panes for vehicles such as automobiles and airplanes, as well as buildings. In general, laminated glass consists of two transparent substrates such as glass plates and an interlayer film sandwiched between them. Laminated glass has properties such as penetration resistance and shatterproof properties when the glass is broken. [0003] As an interlayer film for laminated glass, a transparent resin film including ethylene-vinyl acetate copolymer (hereinafter also referred to as EVA) as a main component is used in consideration of properties such as adhesion to a gla...

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 Patents(China)
IPC IPC(8): C03C27/12C08J5/12
CPCB32B17/10788B32B17/10B32B17/10036B32B17/10697B32B17/10862B32B17/10871C09J5/06C09J2205/114C09J2400/143C09J2423/04C09J2431/00C09J2301/414B32B17/10005B32B2367/00
Inventor 池田哲朗
Owner BRIDGESTONE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com