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Optical layer pieces and manufacture method thereof

A laminated sheet and optical technology, applied in chemical instruments and methods, optics, optical components, etc., can solve problems such as uneven white turbidity, uneven turbidity, and increased turbidity, and achieve the purpose of inhibiting the occurrence of whitening spots and coating Good surface condition and the effect of suppressing the increase of turbidity

Inactive Publication Date: 2009-06-10
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a problem that the precipitation of oligomers of such polyester will cause the turbidity to increase, or the turbidity will increase unevenly, resulting in uneven white turbidity (hereinafter referred to as "whitening spots") and impairing transparency.

Method used

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  • Optical layer pieces and manufacture method thereof
  • Optical layer pieces and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Hereinafter, the laminated sheet of the present invention and its production method will be described with reference to Examples 1 to 7 and Comparative Examples 1 to 4. In addition, in the following Examples etc., when the manufacturing method of the laminated sheet 10 etc. are the same, it demonstrates in detail only in Example 1, and omits description in others.

[0051] The support body of the laminated sheet was formed in the following order. First, dry polyethylene terephthalate (hereinafter referred to as PET) resin with an intrinsic viscosity of 0.66 formed by polycondensation using Ge as a catalyst until the water content is below 50ppm, and the temperature of the heater is set at 280-300 ℃ in the extruder to melt it. The melted PET resin is sprayed from the mold part onto the chill roll to which static electricity is applied to obtain an amorphous matrix. The obtained amorphous matrix was stretched 3.3 times along the traveling direction of the matrix, and th...

Embodiment 2

[0111] A laminated sheet was produced in the same manner as in Example 1 except that the adhesive ratio of the coating liquid formulation for an easily adhesive layer was changed. Specifically, the ratio of the resin adhesive in the formulation of the coating solution for an easily-adhesive layer was changed as follows, and all other additives were the same as in Example 1.

[0112] 23.9 parts by mass of polyurethane resin adhesive

[0113] (Manufactured by Mitsui Chemicals Co., Ltd., Oresta-UD350, solid content 38%, glass transition temperature 33°C)

[0114] 12.6 parts by mass of acrylic resin adhesive

[0115] (AS563 manufactured by Daicel Chemical Co., Ltd., solid content 27.5%, glass transition temperature 47°C)

Embodiment 3

[0117] Except for changing the coating solution formulation for the easy-adhesive layer, everything is the same as in Example 1, and a laminated sheet is produced.

[0118]15.4 parts by mass of polyurethane resin adhesive

[0119] (Manufactured by Mitsui Chemicals Co., Ltd., Oresta-UD350, solid content 38%, glass transition temperature 33°C)

[0120] Acrylic resin adhesive 2.1 parts by mass

[0121] (AS563 manufactured by Daicel Chemical Co., Ltd., solid content 27.5%, glass transition temperature 47°C)

[0122] 2.9 parts by mass of crosslinking agent

[0123] (manufactured by Nisshinbo Co., Ltd., CARBODILITEV-02-L2, solid content 40%)

[0124] Additive (filler) 0.95 parts by mass

[0125] (Nippon Aerosil Co., Ltd., AEROSILOX-50, solid content 10%)

[0126] Additive (filler) 0.4 parts by mass

[0127] (manufactured by Nissan Chemical Co., Ltd., Snow-Tex XL, solid content 40%)

[0128] Additive (lubricant) 0.95 parts by mass

[0129] (manufactured by Chukyo Oil & Fat Co...

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Abstract

A support body formed with polyester 11 is biaxially stretched. An adhesive layer 12 is formed on at least a surface of the biaxially stretched polyester 11. The adhesive layer 12 contains both urethane resin and acrylic resin with glass transition point higher than 30DEG C, and carbodiimide cross-linking agent. The weight ratio of the urethane resin and acrylic resin is of 95:5 to 50:50. The thickness of the adhesive layer 12 is 30nm-200nm. The adhesive layer 12 is formed by coating water soluble coating fluid then drying. The max temperature in drying is from 120 to 170 DEG C. The adhesive layer 12 contains organic or inorganic fine particle and lubricant.

Description

technical field [0001] The present invention relates to an optical laminate and a method for producing the same, and more particularly to an optical laminate used as a component of a liquid crystal display, a plasma display, an organic EL display, a surface electrolytic display (SED), and a CRT display, and a method for producing the same. Background technique [0002] Polyester films, especially biaxially oriented polyester films, exhibit excellent transparency, dimensional stability, chemical resistance, low moisture absorption, and Therefore, it is mostly used as various optical films. For example, base films used for prism sheets, antireflection sheets, light diffusion sheets, absorbing sheets, electromagnetic wave blocking sheets, toner sheets, antireflection sheets, antiglare sheets, hard coat sheets, etc. of liquid crystal displays. [0003] For the base film used for this optical film, it is required to have excellent transparency, and at the same time, it is also r...

Claims

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Application Information

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IPC IPC(8): G02B6/00B32B27/08B32B27/36
CPCB32B7/12B32B27/08B32B27/36B32B2367/00
Inventor 西川纯生田中慎二野村达也铃木胜喜
Owner FUJIFILM CORP
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