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Method and device for manufacturing treated film

A manufacturing method and technology for manufacturing devices, applied to devices for coating liquid on the surface, other household appliances, applications, etc., can solve problems such as scratches and increased scratches, achieve improved processing performance, suppress usage, and suppress manufacturing cost effect

Inactive Publication Date: 2014-03-26
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, when these treatments are carried out, scratches and scratches caused by the above-mentioned treatments tend to increase as the production speed increases.

Method used

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  • Method and device for manufacturing treated film
  • Method and device for manufacturing treated film
  • Method and device for manufacturing treated film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106]

[0107] The raw material PVA film (manufactured by Kuraray, trade name: VF-PS750) was prepared. The PVA-based film had a width of 3100 mm and a thickness of 75 μm.

[0108]

[0109] use the image 3 The manufacturing apparatus of the present invention shown performs a swelling step, a dyeing step, a crosslinking-stretching step, a washing step, and a drying step in this order. More details are as follows. It should be noted that each single-side treatment tank used in each of the swelling step, the dyeing step, the crosslinking-stretching step, and the washing step is installed horizontally. The conveying speed of the PVA-type film was 12 m / min, and the liquid depth of the treatment liquid in each single-side treatment tank was 300 mm. The liquid surface of the treatment liquid in the single-sided treatment tank is brought into contact with the lower surface of the resin film. Among them, in image 3 In , all the liquid removal means (squeegee made of SUS) whi...

Embodiment 2

[0172] In Example 1, a polarizing plate and a polarizing plate were produced in the same manner as in Example 1 except that VF-PS400, a brand name manufactured by Kuraray Corporation, was used as a raw material PVA-based film. The PVA-based film had a width of 3100 mm and a thickness of 40 μm. The obtained polarizing plate had a thickness of 16 μm.

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Abstract

A method for manufacturing a treated film of a resin film, having at least a step of bringing a long resin film into contact with a treatment liquid in a treatment tank and conveying the resin film while the resin film is treated, wherein at least one step of the treatment step is a one-side contacting step performed while, in a state in which the treatment tank is filled with the treatment liquid, the liquid surface of the treatment liquid in the treatment tank and the bottom surface of the resin film are brought into contact, and a nip roll is disposed behind at least one one-side treatment tank pertaining to the one-side treatment step. Through this manufacturing method, the occurrence of scratches, damage, and other defects can be reduced while the desired characteristics are obtained in the resultant treated film.

Description

technical field [0001] The present invention relates to a method for producing a treatment film of the resin film from a resin film and an apparatus for producing the same. As the resin film, films used in various fields can be appropriately selected according to the object to be processed. In particular, in the manufacture of various processed films that require no fine scratches on the processed film, such as polarizers, polyvinyl alcohol-based films, etc. can be used as resin films. In the swelling process and dyeing process in the polarizer manufacturing process The present invention can be applied to at least any one of the treatment steps of the crosslinking step, the stretching step, and the washing step. [0002] In addition, as the resin film, various optical films such as transparent protective films for polarizers such as cellulose ester resins can be used, and this method can be applied to at least any one of the saponification process and the subsequent water was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30B05D7/04B05C3/18
CPCB29D11/00644B29D11/00788B05D7/04B29C71/0009B05D1/18B05D2252/02G02B5/3033C08J7/02C08J2329/04
Inventor 秦和也平田聪望月政和近藤诚司
Owner NITTO DENKO CORP
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