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Automobile glass sound insulation film drawing technology

A technology of automotive glass and sound insulation film, applied in glass/slag layered products, other household appliances, flat products, etc., can solve the problems of luminous distortion, air bubbles, poor edge sealing, etc., achieve low air humidity, increase cold drawing time , the effect of reducing moisture content

Active Publication Date: 2014-12-17
FUYAO GLASS HUBEI
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AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a film-drawing process for automotive glass sound insulation film in view of the above-mentioned shortcomings of causing light distortion and air bubbles caused by poor edge sealing.

Method used

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  • Automobile glass sound insulation film drawing technology
  • Automobile glass sound insulation film drawing technology

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Embodiment Construction

[0034] The present invention comprises the steps:

[0035] a. Flattening: add a pressing rod 1 at the front end of the upper film roller of the film stretching machine (such as figure 1 As shown), the sound-insulating diaphragm is flattened by the pressure bar 1 before the upper film roller, and enters the film stretching machine smoothly under the tension of the upper film roller to eliminate the creases of the sound-insulating diaphragm;

[0036] b. Evening: Add a B pressure rod 2 at the exit of the ice machine (such as figure 2 Shown), under the force of the pressure rod 2, the sound insulation diaphragm is evened out. Let the sound insulation film pass through the stretching roller smoothly;

[0037] c. Humidity adjustment: The sound insulation membranes processed by the ice machine enter the temperature and humidity adjustment room for the humidity adjustment process. The humidity adjustment process is carried out on pallets. The stacking requirements for each pallet o...

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Abstract

An automobile glass sound insulation film drawing technology comprises the following steps: 1, pressing: eliminating the creases of a sound insulation film; 2, flattening: allowing the sound insulation film to flatly go through a draft roll; 3, humidifying to prevent the damage fracture of the sound insulation film; 4, cooling: cooling glass through an axial flow fan; 5, carrying out cold drawing and preliminary hot pressing: increasing the length of a cold drawing segment, and prolonging cold drawing time; and 6, carrying out high pressure treatment: carrying out secondary high pressure air dehumidifying treatment before the film enters an autoclave. The film is drafted and then is humidified on a pallet, the film shrinks in the humidifying process, and the number of film stacks is large, so a lower film is pressed, the shrinkage of the film is uneven, and creases are generated, thereby the reduction of the number of the stacks can reduce the pressure and makes the shrinkage of the film even; and the higher of the water content of the film, the lower of the air solubility, and residual air cannot be absorbed by the film exists in a bubble form. The reduction of the water content of the film benefits bubbles.

Description

technical field [0001] The invention relates to the technical field of making an automobile glass sound-insulating film, in particular to a film-drawing process for an automobile glass sound-insulating film. Background technique [0002] At present, there are a lot of waste products such as optics and air bubbles in the production process of stretched film, which makes it difficult for the factory to deliver. The problem of optics and air bubbles can be solved by cutting the film, but the unit consumption is high and the cost increases. [0003] Optical fold analysis of sound insulation film: [0004] The sound insulation film is composed of two layers of PVB and the middle layer of PET. The material of PET is harder than PVB, and its flexibility is worse than that of PVB. It will break when stretched too much or bent to the limit. [0005] The conditions that cause optical distortion are as follows: [0006] Open the box of the diaphragm: It is strictly forbidden to ...

Claims

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Application Information

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IPC IPC(8): B29D7/01C03C27/12B32B17/06
Inventor 赵华山廖启闽杨春梅王艾清张爱军
Owner FUYAO GLASS HUBEI
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