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Anti-static polyester film with improved coating defect and manufacturing method thereof

A polyester film, appearance defect technology, applied in chemical instruments and methods, coatings, conductive coatings, etc., can solve problems such as the increase in defect rate, and achieve improved peeling force, excellent transparency and anti-static properties, and excellent anti-static properties. performance effect

Active Publication Date: 2010-08-18
TORAY ADVANCED MATERIALS KOREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, since every 1m of existing products 2 The defect rate increases due to the number of appearance defects, so it is extremely fatal in the field of polarizer processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Stage 1: Manufacture of uniaxially stretched polyester film

[0096] Polyterephthalmic acid containing 20 ppm of amorphous spherical silica particles with an average particle size of 2.5 μm and an intrinsic viscosity of 0.625 dl / g was prepared in a vacuum dryer at a temperature of 160° C. for 7 hours. After the ethylene glycol formate pellets are sufficiently dried, they are melted and adhered to a cooling drum by electrostatic application using an extrusion T-die to produce an amorphous unstretched sheet, which is then heated. It was further stretched 3.5 times in the traveling direction of the film at a temperature of 95° C. to manufacture a uniaxially stretched polyester film. Thereafter, a corona discharge treatment was performed on the coated film surface to produce a polyester film.

[0097] Stage 2: Manufacture of Biaxially Stretched Polyester Film

[0098] On the corona-treated surface, a conductive polymer resin (containing 0.5% by weight of poly-3,4-ethyl...

Embodiment 2

[0100] 100 parts by weight of conductive polymer resin (aqueous dispersion containing 0.5% by weight of poly(3,4-ethylenedioxythiophene) and 0.8% by weight of polystyrenesulfonic acid (molecular weight Mn=150,000)), polyurethane resin (containing Hydroxyl anionic polyurethane dispersion) 400 parts by weight, epoxy crosslinking agent (manufactured by Esprix Technologies, CR-5L) 200 parts by weight and fluororesin 150 parts by weight were mixed in water to prepare an antistatic coating liquid, relative to 100 parts by weight The whole of the above-mentioned antistatic coating solution of 100 parts, mixed with the silane-based surfactant (Degussa) of 0.15 parts by weight, except that the content of the total solid content reached 2.0% by weight and was manufactured, the same operation as in Example 1 was produced. Biaxially stretched antistatic polyester film.

Embodiment 3

[0102] A biaxially stretched antistatic polyester film was produced in the same manner as in Example 1 above except that an anionic polyurethane dispersion containing an allylamine group as a functional group repeating unit of the polyurethane resin was used.

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Abstract

The invention provides an anti-static polyester film with improved coating defect and manufacturing method thereof. The invention provides an anti-static coating composition, which is formed by adding 0.001 to 1 weight part of silanes surfactant into 100 weight parts of a composition containing the following components: 100 weight parts of a conductive polymeric resin, 100 to 1000 weight parts ofa water dispersible polyurethane resin containing at least one functional group selected from selected from hydroxyl, amino, alkyl and carboxyl, 100 to 1000 weight parts of one crosslinking agent resin selected from isocyanates, carbonylimines, oxazolines, epoxys and melamines, and 10 to 100 weight parts of fluororesin. The invention also provides an anti-static polyester film with improved coating defect, which is obtained by adding the anti-static coating composition into the polyester film by using an on-line coating mode and exhibits excellent transparency and anti-static performance, andexcellent peeling force of the adhesive tape, antifouling performance and coating performance. in addition, The inventive anti-static polyester film can be effectively used in optical display devicessuch as an LCD, a plasma display, a portable information terminal for a personal, a navigator and the like.

Description

technical field [0001] The present invention relates to an antistatic polyester film with improved coating appearance defects and a method for producing the same. The peel force of the tape, and the crosslinking agent resin is included to improve solvent resistance and coating film performance by adjusting the crosslinking density, and the antifouling performance is improved by containing fluororesin, and the silane surfactant is added. An ideal antistatic coating composition having the peeling force and coatability of an adhesive tape with low peeling force, thereby improving the coating appearance defect antistatic polyester film and its manufacturing method. Background technique [0002] In general, high molecular polymer films are easy to bend due to their high elasticity, and have excellent mechanical properties, heat resistance, transparency, and chemical resistance, so they are used for photographs, graphics, OHP, electrical and electronic components, It is widely us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/00C08J7/04C08L67/00B29C55/04
CPCB32B27/36B32B27/40B32B2307/21C08J5/18C08J2367/00C08J2475/04C08L25/18C08L27/12C08L65/00C09D5/24C09D175/04C09D7/65C08J7/044
Inventor 金在勋李圭锡徐相源徐正泰
Owner TORAY ADVANCED MATERIALS KOREA
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