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Polyester laminated film

一种聚酯层、聚酯基膜的技术，应用在聚酯层压膜领域，能够解决固体含量少、难以均匀地实现抗静电功能、印刷特性变差等问题，达到高透明度和透光率、优异粘合特性和抗静电特性的效果

Active Publication Date: 2015-06-03
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these methods, the disadvantage of the internal addition method is that the excellent physical properties of the film itself will be deteriorated, and it is difficult to uniformly realize the antistatic function
In addition, considering the excellent antistatic function, the method of treating the surface with conductive polymers (conductive inorganic particles) and metal oxides is superior, but the preparation cost of raw materials is too high and the solid content is too small, so that this method is limited. used only for the protection of expensive electrical materials
Meanwhile, the method of coating anionic or cationic antistatic agents has been widely used due to the advantages of relatively excellent antistatic effect and preparation cost (such as lower raw material preparation cost), but there are problems such as aging characteristics and Transfer to the back caused by the movement of antistatic agents on the surface, thermal instability or adhesion of low molecular weight materials, etc.
In this case, the antistatic agent in the antistatic layer is transferred to the back side, which causes a problem that the printing characteristics will be deteriorated when post-processing such as printing process is performed

Method used

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  • Polyester laminated film
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] 1) Preparation of water-dispersed polyurethane adhesive

[0098] A water-dispersible polyurethane having theoretically 50% by weight of branched polymers was prepared.

[0099] Prepared by making 40% by weight of polyethylene adipate diol, 0.6% by weight of trimethylolpropane, and 55.9% by weight of 1,6-hexamethylene diisocyanate react with each other to prepare isocyanate functional groups as terminal groups After the prepolymer, polyurethane having an ionic group and a weight average molecular weight of 14,400 was prepared by reacting isocyanate groups (ie, terminal functional groups of the prepolymer) with 3.5% by weight of sodium bisulfate as an ionic group. A water-dispersed polyurethane adhesive having a solid content of 20% by weight was prepared by dispersing 20% ​​by weight of the above-prepared polyurethane in 80% by weight of water.

[0100] 2) Preparation of Polyurethane Coating Solution 1

[0101] 5% by weight of the water-dispersible polyurethane adhesiv...

Embodiment 2

[0108] 1) Preparation of antistatic coating solution 2

[0109] 4.0% by weight of an acrylic adhesive having a Tg of 60°C, 4.0% by weight of a sulfonic acid quaternary ammonium salt-based antistatic agent (C-077P-2, Takemoto Corp., molecular weight: 100,000), 0.1% by weight of silicone A wetting agent (Dow Corning Corp. polyester-siloxane copolymer), and 0.2% by weight of a melamine-based hardener (C-K01, Takemoto Corp.) were added to water and stirred for 3 hours to prepare 6 wt. % total solids content of the antistatic coating solution 2.

[0110] 2) Preparation of polyester film

[0111]Dehydrated polyethylene terephthalate chips were put into an extruder, melt-extruded, and then rapidly cooled and hardened using a casting drum with a surface temperature of 20 °C to prepare a poly Ethylene Phthalate Flakes. The prepared polyethylene terephthalate sheet was stretched 3.5 times in the machine direction (MD) at 80° C. and cooled to room temperature. Then, after the polyure...

Embodiment 3

[0114] 1) Preparation of antistatic coating solution 3

[0115] 6.0% by weight of an acrylic adhesive having a Tg of 60°C, 6.0% by weight of a sulfonic acid quaternary ammonium salt-based antistatic agent (C-077P-2, Takemoto Corp., molecular weight: 100,000), 0.1% by weight of silicone A wetting agent (Dow Corning Corp. polyester-siloxane copolymer), and 0.3% by weight of a melamine-based hardener (C-K01, Takemoto Corp.) were added to water and stirred for 3 hours to prepare 6 wt. % Total Solids Content of Antistatic Coating Solution 3.

[0116] 2) Preparation of polyester film

[0117] Dehydrated polyethylene terephthalate chips were put into an extruder, melt-extruded, and then rapidly cooled and hardened using a casting drum with a surface temperature of 20 °C to prepare a poly Ethylene Phthalate Flakes. The prepared polyethylene terephthalate sheet was stretched 3.5 times in the machine direction (MD) at 80° C. and cooled to room temperature. Then, after the polyuretha...

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Abstract

Provided is a polyester laminated film having a double-sided heterogeneous coating layer, and more particularly, a polyester laminated film having an excellent antistatic property and post-processability.

Description

technical field [0001] The present invention relates to a polyester laminated film with double-sided heterogeneous coatings, and more particularly, to a polyester laminated film with excellent antistatic properties and post-processing properties. Background technique [0002] In general, polyester, especially polyethylene terephthalate (hereinafter, referred to as PET), is chemically stable due to its stable structure, and has high physical and mechanical strength and excellent Heat resistance, durability, chemical resistance and dimensional stability have made polyesters widely used in various medical and industrial fields as well as packaging materials. Recently, in order to impart various functions to the PET film, a method of preparing a copolyester film or a method of corona treatment and coating of a chemical substance on the surface of the film, etc. are widely used. Among these methods, a method of applying a chemical substance to the surface of a thin film to impar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04B32B27/36C09D175/04C08J5/18C08J7/043C08J7/044
CPCC09D175/04C08G18/6644C08G18/73C08G18/0819C08G18/12C08G18/3206C08G18/4238C08J2367/02C08J2433/00C08J2475/04Y10T428/24967Y10T428/2848C08J2475/06C08J2483/06C08J7/0427C08J7/044C08J7/043C08G18/302C08J7/042B32B27/36B32B27/40C08K3/36C08J2367/00C08J2433/04
Inventor 郑斗焕白尚铉
Owner KOLON IND INC