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Interlayer film for laminated glass and laminated glass containing same

A technology of laminated glass and interlayer film, applied in the directions of lamination, layered products, lamination devices, etc., can solve the problems of reduced service life of the release agent, sticking, and difficulty in exhausting and degassing the air of the laminated glass, so as to improve the degassing effect. Gas, avoid ripple phenomenon, improve the effect of manufacturing and processing workability

Active Publication Date: 2014-05-14
CHANG CHUN PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the interlayer does not strictly control the degassing temperature during the pre-compression bonding process, the periphery of the laminated glass will be sealed first during the pre-compression bonding process, making it more difficult for the air inside the laminated glass to escape, resulting in poor degassing full
[0006] In addition, in the known processing technology, the surface texture (or channel) of the interlayer film is produced by pressing roller method under high temperature and high pressure, and because the composition of the interlayer film is a thermoplastic resin, its chemical properties are viscous at high temperature Therefore, in order to prevent the interlayer film from sticking to the roller, technicians spray the release agent on the roller, so that the interlayer film can be released from the roller smoothly when it is pressed by high-temperature pressure; however, in extreme high temperature and high pressure Under the influence of conditions, the service life of the release agent is reduced, so this defect also needs to be improved

Method used

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  • Interlayer film for laminated glass and laminated glass containing same
  • Interlayer film for laminated glass and laminated glass containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1, preparation of interlayer film A1 for laminated glass of the present invention

[0048] Cut the polyvinyl butyral interlayer film of Production Example 1 into a square of 35 cm×35 cm, preheat the polyvinyl butyral interlayer film to 65 to 75° C., and perform double-sided pressing. The pressing conditions are embossing roller temperature 110°C, pressure 20kg / cm 2 , there are several parallel V-shaped raised line embossing lines on the embossing roller, which are complementary to the line-shaped concave lines that the intermediate film wants to have. The top angle of the V-shaped angle is in the range of 45 degrees to 53 degrees For example, the sequence is left oblique 45 degrees, left oblique 50 degrees, 53 degrees, right oblique 50 degrees, right oblique 45 degrees as a cycle, the height of the apex angle from the roller surface is 50 μm, the width is 50 μm, and the distance between the vertices of adjacent raised lines The multi-angle V-shaped convex li...

Embodiment 2

[0049] Embodiment 2, preparation of interlayer film A2 for laminated glass of the present invention

[0050] The conditions are the same as in Example 1, only the embossing roller is replaced by an embossing roller with several parallel V-shaped embossing lines for embossing, and the apex angle of the V-shaped included angle is 45 degrees to 53 degrees Intervals, the order of sorting is 45 degrees to the left, 50 degrees to the left, 53 degrees, 50 degrees to the right, and 45 degrees to the right. The multi-angle V-shaped convex lines with a distance between the vertices of 600 μm were pressed with the embossing rollers that extruded the interlayer film under the above conditions, that is, the pressing operation was completed, and the interlayer film A2 for laminated glass was obtained.

Embodiment 3

[0051] Embodiment 3, preparation of interlayer film A3 for laminated glass of the present invention

[0052] The conditions are the same as in Example 1, only the embossing roller is replaced by an embossing roller with several parallel V-shaped embossing lines for embossing, and the apex angle of the V-shaped included angle is 45 degrees to 53 degrees Intervals, the order of sorting is 45 degrees to the left, 50 degrees to the left, 53 degrees, 50 degrees to the right, and 45 degrees to the right. The multi-angle V-shaped convex lines with a distance of 600 μm between the vertices were pressed with the embossing rollers that extruded the interlayer film under the above conditions, that is, the pressing operation was completed, and the interlayer film A3 for laminated glass was obtained.

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Abstract

The invention provides an interlayer film for laminated glass and the laminated glass containing the same. Both sides of the interlayer film are embossed to form a plurality of V-shaped grooves on each side, and angles of the V-shaped included angles between adjacent V-shaped grooves are different. Because of arrangement of the grooves, a ripple phenomenon cannot be generated when the interlayer film is used in the laminated glass, the interlayer film is allowed to have excellent processability during a cutting or laminating process, and a good exhaust property is provided during a pre-compression connection process.

Description

technical field [0001] The present invention relates to an interlayer film for laminated glass with excellent degassing property and laminated glass containing it; more specifically, it relates to an interlayer film with multiple V-shaped groove lines on its surface and laminated glass containing it. Background technique [0002] In general, laminated glass is sandwiched between glass plates with an intermediate film made of thermoplastic resin sheets, which is vacuumed by a nip roll or placed in a rubber bag, while the air remaining between the glass and the intermediate film is removed. After degassing, pre-compression bonding is performed, and then heated by an autoclave to obtain laminated glass, which has been widely used in windows of vehicles, aviation tools, or buildings. When this kind of laminated glass is subjected to external impact, since the glass is still attached to the interlayer film after being damaged, it can avoid the dangerous situation of glass fragmen...

Claims

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Application Information

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IPC IPC(8): C08L29/14C08J5/18B32B38/06C03C27/12B32B27/08B32B27/36B32B27/28B32B37/06
Inventor 苏裕弘何明政林育才范逸轩
Owner CHANG CHUN PETROCHEMICAL CO LTD
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