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Polarization plate sheet warping correcting method

A polarizing plate and warping technology, which is applied in the post-processing field of finished polarizing plates, can solve the problems that the re-applied protective film of polarizer cannot fully guarantee the correction of warping, labor cost input, failure, etc., and the accuracy is not high to meet the environmental requirements. Realize the effect of batch correction and simple structure

Active Publication Date: 2019-07-12
SHENZHEN SAPO PHOTOELECTRIC
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AI Technical Summary

Problems solved by technology

[0004] (1) Anti-counterfeiting operations require equipment, materials, and labor costs, and there is a certain amount of wear and tear;
[0005] (2) Re-attaching the protective film to the polarizer (reverse inspection operation) cannot fully guarantee the correction of warpage, and there is a certain probability of failure;
[0006] (3) There is currently no correction method for warped NG products, and they are all scrapped, which wastes costs

Method used

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  • Polarization plate sheet warping correcting method
  • Polarization plate sheet warping correcting method
  • Polarization plate sheet warping correcting method

Examples

Experimental program
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Embodiment 1

[0027] Correction end point judgment: After selecting the correcting conditions, first do a correction test on a small amount of warped products, regularly take out and measure whether the warped products meet the customer’s specifications, if they meet the customer’s specifications, it can be judged as the corrected end point, record the correcting conditions, and carry out scale Heavy volume correction; the ideal end point of correction is zero warpage at the four corners and four sides.

[0028] Put the warped NG polarizer sheet into the cylinder, such as Figure 1-3 As shown, the correction conditions are shown in Table 1, and the correction results are shown in Table 2.

[0029] Table 1 List of Correction Conditions

[0030] corrective condition temperature humidity cylinder Sheet thickness Sheet size correction time parameter 40℃ 40％ 12 inches 306μm 19 inches 24hr

[0031] Table 2 Correction result measurement table

[0032] ...

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PUM

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Abstract

The invention provides a polarization plate sheet warping correcting method. According to the method, a polarization plate sheet is placed in a cylinder, then, the polarization plate sheet and the cylinder are placed in the conditions with the proper environment temperature and temperature, correction is conducted for a certain time, and accordingly a warped NG product is corrected into a qualified product again. The polarization plate sheet warping correcting method overcomes the restraints of site and equipment requirement conditions in the existing technology; the advantage in the cost aspect is obvious, targeted correction is conducted on the warped NG finished product, and cost waste is reduced; and a correcting tool is simple in structure, the environment required precision is not high, and batched correction can be achieved.

Description

technical field [0001] The invention relates to the field of post-processing of finished polarizing plates, in particular to a warping correction method for polarizing plate sheets. Background technique [0002] When the coiled polarizer is found to have a warping problem during cutting, it is usually used to calibrate the warping by reworking the polarizer coil that has not been processed into a sheet and replacing it with a protective film; The warped NG products can only be scrapped completely; the warped NG products caused by warped NG or warped NG products caused by long-term inventory can only be scrapped. [0003] The above-mentioned processing method to sheet warpage has the following defects: [0004] (1) Anti-counterfeiting operations require equipment, materials, and labor costs, and there is a certain amount of wear and tear; [0005] (2) Re-attaching the protective film to the polarizer (reverse inspection operation) cannot fully guarantee the correction of wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C53/18
CPCB29C53/18
Inventor 张宾廖志超侯廷基迟轶男
Owner SHENZHEN SAPO PHOTOELECTRIC
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