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Casting belt for producing transcendental wide width film

A wide and ultra-wide technology, applied in applications, household appliances, household components, etc., can solve problems such as difficult to manufacture films

Inactive Publication Date: 2012-10-31
SK INNOVATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering the stability in actual casting, the stretching in the spreader, and the cutting of both ends of the film, the maximum width that can be obtained is 1800mm, making it difficult to manufacture the film as the width increases

Method used

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  • Casting belt for producing transcendental wide width film
  • Casting belt for producing transcendental wide width film
  • Casting belt for producing transcendental wide width film

Examples

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Embodiment Construction

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0030] Embodiments of the invention relate to a casting belt for producing ultra-wide width films according to the invention.

[0031] figure 2 is a perspective view of an embodiment of the present invention, and image 3 It is a plan view of embodiment of this invention.

[0032] Fabrication of optical castings Performs a casting process, a separation process, a spreading process, a drying process, and a winding process by means of solvent casting, which uses a polymer solution to cast a dopant containing a polymer solution on a tape to manufacture a film, which The separation process separates the film in the gel state formed during the casting process, the stretching process uses a stretcher to stretch the separated film, the drying process dries the stretched film, and the winding process winds the dried film. membrane.

[0033] Embodimen...

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Abstract

The present invention relates to a casting belt used for manufacturing an optical film by means of a solvent casting process, in more detail, a casting belt for producing a transcendental wide width film which is used to produce a film in a gel state by casting a dope when manufacturing a film that is used for a polarizer of liquid crystal displays or optical compensation films.

Description

technical field [0001] The present invention relates to a casting belt for producing optical films by means of a solvent casting process, and more particularly, to a casting belt for producing ultra-wide width films, the casting belt being used in the manufacture of a When a film for a polarizer of a liquid crystal display or an optical compensation film, it is used to produce the film in a gel state by casting a dopant (dope). Background technique [0002] Cellulose acylate films have high transparency and mechanical properties, and also have dimensional stability completely independent of humidity and temperature. Therefore, they are widely used as supports for optical materials requiring those characteristics. Generally, cellulose acylate films are made by casting a dopant made by melting a solvent with a polymer onto a continuous support. [0003] The casting method can be mainly classified into belt casting and drum casting according to the type of continuous support....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/28B29C41/24
CPCB29C66/4324B29C65/16B29C66/432B29C66/4322B29C66/4329B29C66/71B29L2031/709B29C66/73366B29C41/28B23K26/26G02F1/1303B29C41/38B29C33/3842B29C66/1142B29C66/1162B29C66/435B29K2001/12B29C41/24
Inventor 金奕钱金琦烨孙晟豪赵容均李喆浩黄裕锡
Owner SK INNOVATION CO LTD