Hardcoat film, antireflection film and equipment for display

一种硬涂层、防反射的技术，应用在涂层、辨认装置、分层产品等方向，能够解决表面耐擦伤性达不到、反射率降低不充分等问题，达到生产性优良、粘合性良好、表面反射率低的效果

Inactive Publication Date: 2005-02-09
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the following problems: the reduction of the reflectance is insufficient, an interference rainbow pattern caused by the hard coat film is generated, and the scratch resistance of the surface is not satisfactory.

Method used

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  • Hardcoat film, antireflection film and equipment for display
  • Hardcoat film, antireflection film and equipment for display
  • Hardcoat film, antireflection film and equipment for display

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0089] An example of the preparation method of the hard coat layer of the present invention is described below, although in this example, polyethylene terephthalate (hereinafter referred to as PET) is used as an example to illustrate the base film, but the present invention It is not limited to this.

[0090] PET granules (intrinsic viscosity 0.62 dl / g) containing 0.2% by weight of silica granules with an average particle diameter of 0.3 μm were vacuum-dried at 180° C. for about 2 hours to sufficiently remove moisture, and then supplied to an extruder, and heated at 260 to It is melt-extruded at a temperature of 300°C and formed into a sheet from a T-shaped die. The flaky material thus obtained is cooled and solidified on a mirror-surfaced cooling roller to obtain an unstretched film. At this time, in order to improve the adhesiveness with the casting drum, it is preferable to use an electrostatic application method. Then, the obtained unstretched sheet is stretched 2 to 5 t...

Embodiment 1

[0212] Polyethylene terephthalate (hereinafter referred to as PET) ( The chips with an intrinsic viscosity of 0.62 dl / g) were sufficiently vacuum-dried at 180°C, supplied to an extruder, melted at 285°C, and extruded in a sheet form from a T-shaped die. The extruded sheet was wound and solidified on a mirror casting drum with a surface temperature of 20°C by an external electrostatic molding method to obtain an unstretched film. The obtained unstretched sheet was stretched 3.0 times in the longitudinal direction on a group of rolls heated to 105° C. to obtain a uniaxially stretched film. Next, on one side of the monoaxially stretched film, the above-mentioned coating agent A was applied to a thickness of 20 μm by die coating. Then, both ends of the film coated with the coating agent A were clamped with clips, introduced into a preheating zone at 90°C, and then stretched 3.3 times in the width direction in a heating zone at 100°C. Furthermore, heat treatment was performed for...

Embodiment 2

[0220] In Example 1, a hard coat film was produced in the same manner as in Example 1, except that the coating material D in which the polyisocyanate was changed was used instead of the coating material A. The results are shown in Table 1. As shown in Table 1, it shows that the average fluctuation amplitude is 0.2%, the surface reflectance is 5.2%, the turbidity is 0.8%, the adhesion is B under normal conditions, the adhesion under wet heat is B, and the abrasion resistance is 3kg / cm 2 , the pencil hardness is 3H, there is no rainbow pattern, and the visibility is excellent characteristics of A.

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Abstract

A hardcoat film comprises a substrate film, and a hardcoat layer laminated on at least one side of the substrate film, wherein a reflectance of the hardcoat layer at a wavelength within 400 to 600 nm has a mean ripple amplitude of 1% or less. The hardcoat film has decreased iris patterns. There is also provided an antireflection film having a low surface reflectance and a neutral tone of color, and an equipment for display including the film.

Description

technical field [0001] The present invention relates to a hard coat film, an antireflection film and an image display device. More specifically, it relates to a display surface of a display, a hard coat film and an antireflection film used on the surface such as a polarizing plate of a display. It also relates to an image display device equipped with an antireflection film. Background technique [0002] Since plastic films such as polyester have excellent properties in terms of mechanical properties, dimensional stability, heat resistance, transparency, and electrical insulation, they are used as magnetic recording materials, packaging materials, electrical insulation materials, and various photographic materials. It is widely used as a substrate film for various purposes such as materials, visual art materials, or optical display materials. [0003] However, due to the low surface hardness of the film surface and insufficient wear resistance, this plastic film is easily d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B7/02G02B1/10G02B1/11G09F9/00
CPCG02B1/11Y10T428/24355Y10T428/24942Y10T428/31Y10T428/24851Y10T428/31935Y10T428/31786Y10T428/31576Y10T428/31928Y10T428/31565B32B27/36
Inventor 三村尚土本达郎小岛聪史南口尚士吉田实
Owner TORAY IND INC
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