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A kind of processing method of screen printing bad film

A processing method, screen printing technology, applied in sustainable manufacturing/processing, electrical components, climate sustainability, etc., can solve the problems of defective product qualification rate and low conversion efficiency, and achieve product defect rate reduction and product performance. boosted effect

Active Publication Date: 2015-08-05
ZHEJIANG FORTUNE ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for processing defective screen printing sheets, which solves the problems of low pass rate and conversion efficiency of defective products after rework in the prior art

Method used

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  • A kind of processing method of screen printing bad film
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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings

[0017] Such as figure 1 Shown, a kind of processing method of screen printing bad sheet, carry out successively according to following steps:

[0018] a. Put the poorly printed sheet in an ultrasonic tank filled with alcohol solution to remove the slurry;

[0019] b. Soak the defective sheets after removing the slurry in 6-7% HCL solution for 6-12 hours; wherein the HCL solution is made by mixing 80°C water and HCL in a volume ratio of 1:1.

[0020] c. Soak the defective tablets in water for 0.5-1 hour;

[0021] d. Put the bad piece in an ultrasonic tank filled with pure alcohol solution and clean it again;

[0022] e. Dry the defective sheets, such as air cooling or natural cooling.

[0023] Table 1 records the comparison of technical effects between the original treatment scheme of the prior art and different embodiments of the technica...

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Abstract

The invention discloses a processing method of a poor screen print sheet. The method is characterized by comprising the following steps in sequence: a, putting a poor print sheet in an ultrasound groove filled with an alcoholic solution for removing slurry; b, soaking the poor sheet subjected to slurry removal in a 6-7% HCL solution for 6-12 hours; c, soaking the poor sheet with clear water for 0.5-1 hour; d, washing the poor sheet in an ultrasound groove filled with a pure alcoholic solution again; and e, drying the poor sheet. By using the technical scheme, the reject ratio of the product is reduced, and the property of the product is enhanced.

Description

technical field [0001] The invention relates to the technical field of screen printing of solar battery sheets, in particular to a method for processing bad screen printing sheets. Background technique [0002] The basic principle of cell screen printing is to use the basic principle that the screen graphics part of the mesh is transparent to the paste, and the non-graphic part of the mesh is impermeable to the paste for printing. When printing, pour the slurry at one end of the screen, apply a certain pressure on the slurry part of the screen with a scraper, and move toward the other end of the screen at the same time. The ink is squeezed from the mesh of the graphic part to the substrate by the scraper during the movement. Due to the viscosity of the slurry, the imprint is fixed within a certain range. During the printing process, the scraper is always in line contact with the screen printing plate and the substrate, and the contact line moves with the movement of the scr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 王卫军
Owner ZHEJIANG FORTUNE ENERGY