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coating film

A technology of coating film and coating layer, applied in the field of coating film, can solve the problem of insufficient adhesion of the prism layer, and achieve the effect of excellent adhesion and high industrial value

Active Publication Date: 2017-06-16
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesion to the prism layer corresponding to the increase in brightness of the prism derived from the reduction in the number of backlights and the reduction in power consumption, that is, the prism layer with a high refractive index, may not be sufficient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0147] The mixed raw materials mixed with polyester (A), (B) and (C) at a ratio of 89%, 5%, and 6% respectively were used as raw materials for the outermost layer (surface layer), and polyesters were mixed at a ratio of 95%, 5%, and The mixed raw materials mixed with polyester (A) and (B) are used as the raw materials of the intermediate layer, and are respectively supplied to two extruders. Co-extrusion of two types of layer structures of three layers (surface layer / intermediate layer / surface layer = 1:18:1 discharge rate) was performed, cooled and solidified to obtain an unstretched sheet.

[0148] Next, after stretching 3.4 times in the longitudinal direction at a film temperature of 85°C by using the difference in roll speed, the coating liquid 1 shown in Table 1 below was applied to both sides of the longitudinally stretched film, introduced into a tenter, and stretched in the transverse direction. Stretched 4.0 times at 120° C., heat-treated at 225° C., and then relaxed ...

Embodiment 2～31

[0150] In Example 1, except having changed the coating agent composition into the coating agent composition shown in Table 1, it manufactured similarly to Example 1, and obtained the polyester film. As a result of evaluating the completed coating film, as shown in Table 2, the adhesion was good.

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Abstract

The present invention provides a coating film that can be used in various resins, especially various applications that require good adhesion to solvent-free resins, such as prism sheets or microfilms used in backlight units of liquid crystal displays. Suitable for lens parts. In this coating film, at least one surface of the polyester film has a coating layer for forming a surface functional layer using an active energy ray curable paint on the surface of the coating layer. A coating layer formed of a coating solution of a polyurethane resin having a carbon-carbon double bond and a carbodiimide compound or an isocyanate compound having a reactive carbon-carbon double bond contained in the compound of the layer.

Description

technical field [0001] The present invention relates to a coating film, and particularly relates to a coating film suitable for use as a prism sheet or a microlens member used in a backlight unit of a liquid crystal display, etc., and having good adhesion to various surface functional layers. In addition, prism sheets or microlens sheets that are formed on a transparent film to scatter or collect transmitted light, such as prism layers, microlens layers, etc., are collectively referred to as optical functional films, and the "surface functional layer" in the present invention A representative example of is an optical functional layer in an optical functional film. 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 does not have a light-emitting function alone, a syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/36B32B27/40C09D7/12C09D175/04C08J7/043
CPCC09D7/40B32B27/08B32B27/36B32B27/40C09D175/04C08J7/0427C08J7/043C08G18/6659C08G18/706C08G18/758C08G18/792C08G18/797C08G59/00C08G18/4277C08J2367/02C08J2475/16G02B1/10G02B3/0006G02B5/045C08G18/672C08G18/722C08G18/8029C08G18/8064C08G18/8077C09J175/16C09D7/65C08G18/0823C08G18/42
Inventor 佐藤崇川崎泰史加藤雄三
Owner MITSUBISHI CHEM CORP