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PET (Polyethylene terephthalate) base material used for filter membrane, preparation method as well as filter membrane and display screen comprising PET base material

A filter film and base material technology, applied in the field of optical film materials, can solve the problems of discoloration, reduce the resistance of filter film, etc., and achieve the effect of improving color

Inactive Publication Date: 2012-07-11
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a PET base material for a filter film, a preparation method and a filter film and a plasma display screen including the same, so as to solve the pressure of various chemical substances existing in the filter film in the prior art. Discoloration in the sensitive adhesive layer, reducing the resistance of the filter film and other technical problems

Method used

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  • PET (Polyethylene terephthalate) base material used for filter membrane, preparation method as well as filter membrane and display screen comprising PET base material
  • PET (Polyethylene terephthalate) base material used for filter membrane, preparation method as well as filter membrane and display screen comprising PET base material
  • PET (Polyethylene terephthalate) base material used for filter membrane, preparation method as well as filter membrane and display screen comprising PET base material

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preparation example Construction

[0026] According to another aspect of the present invention, there is provided a method for preparing any one of the above PET substrates, comprising the following steps: 1) heating the transparent PET material to obtain molten PET; 2) mixing inorganic pigments, organic pigments and dyes One or more of them are added to the melted PET obtained in step 1); 3) Add dispersant and stabilizer to the product of step 2), and mix uniformly to obtain a colored PET substrate. The transparent PET substrate used in the preparation method is a commercially available PET substrate, and its preparation method is well known to those skilled in the art. Heat the commercially available transparent PET material, and when it becomes molten, add one or more of inorganic pigments, organic pigments and dyes, and also need to add some dispersants, such as white oil, DOP, turpentine , phosphates, glyceryl palmitate, glyceryl stearate and dibutyl ester, in addition, it is necessary to add a stabilizer,...

Embodiment 1

[0034] 99% of the transparent PET material (this PET material is a commercially available transparent material) is heated to a molten state, 0.1% of carbon black is added thereto, and after stirring evenly, 0.7% of glyceryl palmitate is added as a dispersant, 0.2% CaSt is used as a stabilizer, the above-mentioned substances are fully mixed, and the colored PET film is pulled out. An AR layer is deposited on the obtained colored PET film, and a pressure-sensitive adhesive PSA layer is deposited on the lower surface to obtain a final product filter film.

Embodiment 2

[0036] 87% of the transparent PET material (this PET material is a commercially available transparent material) is heated to a molten state, and 8% of quinophthalone and 2% of oxanaphthalene are added thereto, and 2.0% of turpentine is added after stirring As a dispersant, 1.0% MgSt is used as a stabilizer, the above substances are mixed well, and the colored PET film is pulled out. A layer of EMI function layer is deposited on the obtained colored PET film, and a pressure-sensitive adhesive PSA layer is deposited on the lower surface to obtain the final product filter film.

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Abstract

The invention discloses a PET (polyethylene terephthalate) base material used for a filter membrane, a preparation method as well as the filter membrane and a plasma display screen comprising the PET base material. The PET base material comprises one or more of inorganic pigment, organic pigment and dye, wherein the inorganic pigment is one or more of metallic oxide, sulfide, sulfate, chromate and carbon black; the organic pigment is one or more of azo pigment, phthalocyanine pigment, heterocyclic pigment, lake pigment and fluorescent pigment; and the dye is one or more of pyrazolone derivative, quinophthalone, fluorescent polycyclic ring dye, naphthazarin, benzopyrone, azo, fluorescent reactive dye, anthraquinone reactive dye, picene ketone dye, anthraquinone reactive derivative, fluorescent polycyclic ring and polymethylene dye. A material with a toning function is added into the PET base material, thus the phenomenon that chemical substances in pressure-sensitive adhesive (PSA) react with the material with the toning function to generate the discoloration is avoided, and meanwhile, the plasma screen capable of improving color is obtained.

Description

technical field [0001] The invention belongs to the field of optical film materials, and in particular relates to a PET base material used for a light filter film, a preparation method, a light filter film and a plasma display screen comprising the same. Background technique [0002] Generally speaking, filter devices are divided into filter glass, filter plate, or filter film. Among them, the filter film has the characteristics of lightness, thinness and low cost, and is more and more widely used. Especially in the production of plasma display equipment and other display equipment, the filter film device is indispensable. [0003] Filter films generally have the functions of shielding electromagnetic radiation, near-infrared light blocking (NIR-cut dye), neon yellow light blocking (Ne-cut dye), adjusting color (R, G, B dyes or pigments), enhancing contrast, and reducing reflectivity and other effects. Generally, according to different requirements, filter films with diffe...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/02G02B5/22H01J17/49H01J11/10
Inventor 王冲张小芳
Owner SICHUAN COC DISPLAY DEVICES
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