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Screen printing plate applied to printing of heating line of automobile rear windshield glass and manufacturing method of screen printing plate

A heating wire and rear windshield technology, applied in the field of screen printing, can solve the problems of unstable glass, high busbar temperature, and reduced production efficiency, so as to reduce labor costs and equipment costs, meet heating temperature requirements, and improve production efficiency. Effect

Inactive Publication Date: 2015-03-25
FUYAO GRP SHANGHAI AUTOMOBILE GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thickness of the screen photosensitive adhesive produced by the current process method is the same. Under the same conditions, when the temperature of the heating line area S2 reaches the required temperature, the temperature of the area s1 of the welding tongue joint in the busbar that is energized first is higher than that of the heating line area, because the temperature at S1 is too high. High damage to the interior of the car cannot meet customer standards, and when the temperature at S1 is lowered by adjusting the voltage or the power-on time or adjusting the resistance, the temperature at S2 will also drop accordingly and cannot meet customer standards
In order to control the temperature of the heating zone S2 and the overheating of the busbar S1, the method of widening the busbar was used to speed up the heat dissipation, but this method caused the heating process of the glass before tempering to change due to the large printing area of ​​the silver paste layer at the busbar. The temperature of the glass at the busbar is very different from that of other parts due to the heat reflected by the silver paste layer, which eventually affects the forming of the glass, so it cannot be used
In the description of the patent: "200580012852-Glass plate with conductive printed circuit and its manufacturing method", the printing area of ​​the silver paste layer is reduced by hollowing out the printing design on the busbar, thereby reducing the glass heating caused by the heat reflected by the silver paste layer Tempering is unstable, but this method can only solve the problem of reflecting furnace heat during glass tempering, and the resistance value of this area will increase after the silver paste busbar is hollowed out and printed, which will cause the problem of too high busbar temperature after the finished glass is electrified. Solution, the purpose of ensuring the heating temperature of the heating line area and reducing the temperature of the bus bar area cannot be achieved. Currently, only two printing equipment can be used to repeatedly print the bus bar twice to increase the thickness of the silver paste at the bus bar S1 and reduce the thickness of the bus bar S1. The resistance value and speed up the heat dissipation at S1 to achieve the same temperature at S1 and S2, but the production in this way seriously reduces the production efficiency and increases the manufacturing cost of glass

Method used

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  • Screen printing plate applied to printing of heating line of automobile rear windshield glass and manufacturing method of screen printing plate
  • Screen printing plate applied to printing of heating line of automobile rear windshield glass and manufacturing method of screen printing plate
  • Screen printing plate applied to printing of heating line of automobile rear windshield glass and manufacturing method of screen printing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The heating requirements of the rear windshield heating wire of a type A car are (voltage 12V, power 270±6%, glass temperature according to TL 82045C 200505 standard). and the heating line film R (the area of ​​the original heating line in the busbar film is completely black, and the area of ​​the original busbar in the heating line film is completely black, and the black part is slightly larger than the original pattern, such as Figure 1~2 shown), the method of making the screen plate is as follows: Stretch the mesh cloth 2 on the screen frame 1, apply the photosensitive glue and dry the process to make a PS plate with a photosensitive glue thickness of 114 μm, and use the busbar film M to first make the busbar pattern on the On the screen, apply a photosensitive glue with a thickness of 5 μm. After drying, paste the heating line film on the bus screen, and the alignment points R1 and R2 coincide with the alignment points M1 and M2, and then use the heating line film R...

Embodiment 2

[0022] The heating requirements of the rear windshield heating wire of a type B car are (voltage 12V, power 178±10%, glass temperature according to TL 82045C 200505 standard). and the heating line film R (the area of ​​the original heating line in the busbar film is completely black, and the area of ​​the original busbar in the heating line film is completely black, and the black part is slightly larger than the original pattern, such as figure 2 As shown), the method of making the screen plate is to make a PS plate with a photosensitive glue thickness of 79 μm through stretching, coating photosensitive glue and drying processes. Use the busbar negative film M to make the busbar pattern on the screen first, and then apply the photosensitive glue. The thickness of the adhesive is 5μm. After drying, paste the heating line film on the busbar screen, and the alignment points R1, R2 coincide with the alignment points M1, M2, and then use the heating line film R to make the heating ...

Embodiment 3

[0025] A method for making a screen for heating line printing on rear windshields of automobiles, the method comprising the following steps: stretching a mesh cloth on a screen frame, making busbar negatives and heating line negatives respectively, and then using busbars on the mesh Make the bus bar pattern layer with the negative film, and then coat the photosensitive adhesive layer on the bus bar pattern layer. A screen with a different thickness, the screen is divided into a heating line area and a bus bar area, the heating line area has a heating line pattern layer, the bus bar area has a bus bar pattern layer, and there is a layer of photosensitive adhesive on the bus bar pattern layer. The thickness of the adhesive layer is 10% of the thickness of the pattern layer of the bus bar, so that the screen has a thickness difference.

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Abstract

The invention relates to a screen printing plate applied to printing of a heating line of an automobile rear windshield glass and a manufacturing method of the screen printing plate. The screen printing plate comprises a screen frame and screen cloth, wherein the screen cloth is divided into a heating line region and a bus region; a heating line pattern layer is printed in the heating line region; a bus pattern layer is printed in the bus region; and a photosensitive glue layer is made on the bus pattern layer. Compared with the prior art, the screen printing plate has the advantages that the printing efficiency, the yield and the product quality are greatly improved; and the labor cost and the equipment cost generated during plate making and printing are reduced.

Description

technical field [0001] The invention relates to a screen, in particular to a screen used in heating line printing of rear windshields of automobiles and a manufacturing method thereof. Background technique [0002] At present, with the development of the automobile industry, the requirements for automobile glass (such as appearance, rear windshield defrosting performance, etc.) are getting higher and higher, especially the rear windshield is heated and defrosted completely by screen printing silver paste line The heat generated after electrification is realized, and the car manufacturer designed the heating line to be extremely thin (the width is only 0.3mm, the length of the line exceeds 1300mm, and the width of the busbar is only about 14mm) in order to avoid the arrangement of the heating line from affecting the driver's sight in the early design ). The thickness of the screen photosensitive adhesive produced by the current process method is the same. Under the same cond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B17/00
Inventor 于世建陈绍木易涛李巍
Owner FUYAO GRP SHANGHAI AUTOMOBILE GLASS CO LTD