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Laminated polyester film

A laminated polyester film, polyester film technology, applied in the direction of coatings, layered products, synthetic resin layered products, etc., can solve the problems of increased number of manufacturing processes and cost increases, and achieve excellent anti-adhesive properties and industrial advantages. high value effect

Active Publication Date: 2012-10-17
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the price of liquid crystal displays has been greatly reduced, significant cost reduction is required in the processing steps of optical sheets. However, since the above-mentioned undercoat layer is formed by off-line coating, an increase in cost due to an increase in the number of manufacturing steps is a problem.

Method used

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  • Laminated polyester film
  • Laminated polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] The mixed raw materials mixed with polyester (A), (B) and (C) at a ratio of 85%, 5%, and 10% are set as the raw materials of the outermost layer (surface layer), and 95%, 5%, and The mixed raw materials mixed with polyester (A) and (B) in the proportion of % are used as the raw materials of the middle layer, and are respectively supplied to two extruders. A layer structure of 3 layers (surface layer / intermediate layer / surface layer = 1:18:1 discharge rate) was co-extruded and allowed to cool and solidify to obtain an unstretched sheet. Next, the film was stretched 3.4 times in the longitudinal direction at a film temperature of 85° C. by using the difference in the peripheral speed of the rollers, and the coating liquid 1 shown in the following Table 1 was dried to 0.09 g / m on one surface of the longitudinally stretched film. 2 Coating in the same way, on the surface of the opposite side, the coating liquid 11 is dried to 0.03g / m 2 Coating was carried out in a tenter, ...

Embodiment 2～10

[0131] In Example 1, except having changed the coating liquid composition into the coating liquid composition shown in Table 1, it manufactured similarly to Example 1, and obtained the polyester film. The properties of the produced polyester film are shown in Table 2 below.

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Abstract

Disclosed is a laminated polyester film which is suitable for use in instances when an item exhibiting good slipperiness and anti-stick properties is required,such as in members which form LCD displays.The laminated polyester film has:a coating layer containing a resin and particles on one surface of a polyester film,said particles having an area content ratio of 1-50%;and a coating layer containing a resin on the other surface of the polyester film.

Description

technical field [0001] The present invention relates to a laminated polyester film, in particular to a laminated polyester film with good sliding properties and anti-adhesive properties, which is suitable for microlens sheets, prism sheets, optical Diffusion sheets, components for touch panels, etc. Background technique [0002] In recent years, liquid crystal displays have been widely used as display devices such as televisions, personal computers, digital cameras, and mobile phones. In these liquid crystal displays, since the liquid crystal display unit alone does not have light-emitting performance, a method of irradiating light with a backlight from the back side to display is widespread. [0003] In order to improve the optical efficiency of the backlight and increase the brightness, various optical sheets such as microlens sheets, prism sheets, and light diffusion sheets can be used. In these optical sheets, an undercoat layer is usually formed on the surface opposit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36C08J7/043C08J7/046
CPCC08J7/042B32B27/308B32B27/18B32B27/36B32B27/38B32B27/40B32B27/08Y10T428/25Y10T428/254Y10T428/31786Y10T428/31565Y10T428/31797C08J7/043C08J7/046B32B2367/00
Inventor 川崎泰史藤田真人
Owner MITSUBISHI CHEM CORP
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