Middle film for sandwich glass and sandwich glass comprising same

A technology of laminated glass and interlayer film, which is applied in the field of laminated glass and interlayer film, which can solve the problems of difficult degassing, insufficient and inconvenient air in laminated glass, so as to improve processing workability, degassing performance and degassing sexual effect

Active Publication Date: 2018-01-23
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
[0007] In addition, the interlayer film disclosed in the above-mentioned known technology, because its exhaust channels are all stripes in a regular direction, can only be exhausted from both ends of the exhaust channel in this regular fixed direction, so care must be taken during processing. The processing direction is in the same direction as the exhaust channel of the interlayer film. If it is not consistent, the exhaust will not be completely exhausted during the pre-pressing process of the laminated glass and the interlayer film; therefore, the processing direction is limited and inconvenient.

Method used

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  • Middle film for sandwich glass and sandwich glass comprising same
  • Middle film for sandwich glass and sandwich glass comprising same
  • Middle film for sandwich glass and sandwich glass comprising same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0054] Preparation example 1, the preparation of polyvinyl butyral interlayer film

[0055] 100 kilograms of polyvinyl butyral resin and 35 kilograms of ADK CIZER RS-107 plasticizer (purchased from Changjiang Chemical Co., Ltd.) were added to the high-strength extrusion mixer, and the temperature was maintained in the range of 190 to 193 ° C. After mixing the butyral resin and the plasticizer mixture for about 5 minutes, the extruded melt is forced to pass through a film-forming die, extruded into a thin sheet of about 0.76 mm, cooled by cooling water and coiled to obtain polyethylene without patterns The preparation of the butyral interlayer, the interlayer has the original surface texture, the polyvinyl butyral interlayer, through the surface roughness analyzer (brand: KosakaLaboratory Ltd., model: SURFCORDER SE1200) to measure the depth of the surface texture , The average surface roughness was measured to be 34.7 μm.

Embodiment 1

[0056] Embodiment 1, preparation of interlayer film A1 for laminated glass of the present invention

[0057] The polyvinyl butyral interlayer film of Production Example 1 was cut into a square of 35 cm×35 cm, and the polyvinyl butyral interlayer film was preheated to 65-75° C. before performing double-sided pressing. The pressing conditions are embossing roller temperature 130°C, pressure 30kg / cm 2 , the pattern on the embossing roller is complementary to the approximately circular protrusions that the intermediate film wants to have, the minimum diameter is 280 μm, the maximum diameter is 400 μm, and the average diameter is about 300 μm, and the height of the apex of the protrusion is about 65 to 70 μm. The center point spacing of each adjacent protrusion is about 380 to 400 μm, and the shape, diameter, height of each protrusion apex and the center point spacing of each adjacent protrusion can be the same or different irregular pattern The debossed pattern, to extrude the em...

Embodiment 2

[0058] Embodiment 2, preparation of interlayer film A2 for laminated glass of the present invention

[0059]The conditions are the same as in Manufacturing Example 1, except that the pattern on the embossing roller is replaced by an approximately circular protrusion that is complementary to the intermediate film. The maximum diameter is 450 μm, the minimum diameter is 350 μm, and the average diameter is About 400 μm, the height of the apex of each protrusion is about 85 to 90 μm, the distance between the center points of each adjacent protrusion is about 780 to 800 μm, and the shape, diameter, height of each protrusion apex and each adjacent protrusion are approximately circular. The central point spacing of the protrusions can be the same or different irregular patterns and concave patterns, which are pressed by embossing rollers that press out the interlayer film under the above conditions, that is, the pressing operation is completed, and the interlayer film A2 for laminated...

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Abstract

The invention provides a middle film for sandwich glass and the sandwich glass comprising the same. The middle film has patterns on both sides, and the patterns are formed by several approximately circular bulges. Through arrangement of the patterns, when the middle film is applied to the sandwich glass, a ripple phenomenon is avoided, the sandwich glass has excellent workability in the cutting orsandwiching process and provides high breathability in the pre-crimping process.

Description

[0001] This application is a divisional application of Chinese patent application CN2012101934902. The filing date of the original application is: June 13, 2012, the application number is: 2012101934902, and the name of the invention is: interlayer film for laminated glass and laminated glass containing it. technical field [0002] 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 intermediate film with an irregular circular surface and a laminated glass containing it. Background technique [0003] 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 obta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C27/12B32B17/10B32B27/42B32B27/06B32B3/30B32B38/06
Inventor 苏裕弘林育才何明政范逸轩
Owner CHANG CHUN PETROCHEMICAL CO LTD
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