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PVB film embossing device

An embossing and film technology, applied in the field of PVB film embossing device, can solve the problems of poor exhaust, poor roughness, unstable surface texture parameters, etc., and achieves the advantages of forming and maintaining, and accurately adjusting the thickness of the film. Effect

Pending Publication Date: 2021-03-12
南京亚鼎光学有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] One of the problems often encountered in the production process of laminated glass is that during the lamination process of laminated glass, air bubbles appear inside the laminated glass due to poor exhaust.
The poor texture and roughness of the PVB diaphragm is the main reason for the poor exhaust
The conventional production process of PVB diaphragm includes two methods of producing lines. One is that PVB resin powder is plasticized and then extruded from the die. Due to the change of outlet pressure, natural burst lines will be formed on the surface of the cast film. Unstable because it is largely affected by raw materials and processing technology

Method used

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  • PVB film embossing device

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Embodiment 2

[0023] Embodiment 2: To produce an interlayer film for PVB front-shield laminated glass for vehicles, the film thickness is required to be 0.76-0.78mm, and the surface roughness RZ of the front and back sides is RZ=20-50um. The parameters of the PVB diaphragm embossing device are: extrusion roll 1 has a diameter of 200 mm, adopts 45° twill, texture depth 0.1 mm, and roll spacing 0.80 mm, and adjusts the rotation speed of extrusion roll 1 according to the film exit speed of casting extrusion die , so that the line speed at the tangent point of extrusion roll 1 is consistent with the film exit speed. As shown in the figure, after the PVB film is extruded from the die, it enters the gap between the two extrusion rollers 2, so that when the PVB film is extruded, the lines on the extrusion roller 2 are also embossed on the PVB film. superior.

[0024] Adjust the extrusion temperature of the diaphragm by changing the water temperature, so that the PVB diaphragm can complete the emb...

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Abstract

The invention provides a PVB film embossing device, and particularly relates to the field of PVB intermediate film manufacturing. The PVB film embossing device comprises a pair of extrusion rollers with prefabricated lines, a one-way displacement precision sliding table capable of adjusting the gap between the extrusion rollers, and a cooling water tank; and after being extruded from a casting extrusion die head, the PVB film can enter the gap between the two extrusion rollers, and when the PVB film is extruded, the lines of the extrusion rollers can be embossed on the PVB film. The PVB film embossing device is simple, practical and easy to implement.

Description

technical field [0001] The invention belongs to the field of PVB intermediate film manufacture, and in particular relates to a PVB film embossing device. Background technique [0002] One of the problems often encountered in the production process of laminated glass is that air bubbles appear inside the laminated glass due to poor exhaust during the lamination process of laminated glass. The poor texture and roughness of the PVB diaphragm is the main reason for the poor exhaust. The conventional production process of PVB diaphragm includes two methods of producing lines. One is that PVB resin powder is plasticized and then extruded from the die. Due to the change of outlet pressure, natural burst lines will be formed on the surface of the cast film. It is unstable due to the influence of raw materials and processing technology to a large extent. The other is to use the rolling process, the purpose is to artificially control the PVB surface texture arrangement, depth, and r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C59/04B29C35/16B29C48/00B29K29/00
CPCB29C35/16B29C59/04B29C2035/1616B29K2029/14B29C48/002
Inventor 武爱平
Owner 南京亚鼎光学有限公司