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Laminated polyester film

A technology of laminating polyester film and polyurethane resin, applied in the field of polyester film, can solve problems such as insufficient effects, and achieve excellent adhesion weather resistance, excellent adhesion, and high industrial value

Inactive Publication Date: 2012-12-26
MITSUBISHI PLASTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a need for a coating layer having adhesive weather resistance and antistatic properties as described above, but the existing easy-adhesive coating layer having an easy-adhesive coating layer and antistatic property still cannot obtain sufficient effects.

Method used

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  • Laminated polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1～6

[0118] Mix polyester 1 and polyester 2 at a weight ratio of 95 / 5, and after fully drying, heat and melt at 280-300°C, extrude into a sheet from a T-shaped nozzle, and use electrostatic bonding method with a surface temperature of 40- The mirror-surface cooling drum at 50°C was bonded and solidified while cooling to produce an unstretched polyethylene terephthalate film. This film was stretched 3.7 times in the longitudinal direction while passing through a set of heating rolls at 85° C. to obtain a uniaxially oriented film. The coating composition shown in Table 1 below was coated on one surface of this uniaxially oriented film. Next, the film was introduced into a tenter stretching machine, stretched 4.0 times in the width direction at 100° C. while drying the coating composition by the heat thereof, and further heat-treated at 230° C. to obtain a bilayer film with a film thickness of 100 μm. Axially oriented polyethylene terephthalate film with 0.04g / m 2 Amount of coating ...

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Abstract

Disclosed is a polyester film used in anti-reflective films, optical films, and the like, that is provided with a coating layer having superior ease of adhesion and adhesion weathering with respect to various overcoating agents. Specifically disclosed is a laminated polyester film with a coating layer, wherein said coating layer is formed from a coating liquid comprising an antistatic agent (A), a compound (B) having an isocyanate reactive group and a urethane bond, a urethane resin (C) that does not have an isocyanate reactive group at the terminal thereof, and at least one cross-linking agent (D).

Description

technical field [0001] The present invention relates to a polyester film having a coating layer excellent in antistatic property to various top coats, easy adhesion and adhesion weather resistance at the same time. Background technique [0002] Biaxially stretched polyester film has excellent transparency, dimensional stability, mechanical properties, heat resistance, electrical properties, gas barrier properties, chemical resistance, etc. It is used for packaging materials, plate making materials, display materials, transfer printing Materials, building materials, window stickers, etc., anti-reflection films, diffusion sheets, optical films such as prism sheets, transparent touch panels, etc. used in membrane switches and flat panel displays, etc. However, in such applications, when other materials are coated and laminated on the polyester film, there is a disadvantage of poor adhesion depending on the materials used. [0003] As one of the methods for improving the adhesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36C08J7/04C09D5/24C09D7/12C09D175/04C08J7/043C08J7/044C09D7/65
CPCC09D5/006C08J2475/04C09D7/125C08J7/047C08J2367/02C08G18/8077C08G18/283C08G18/44C08G18/797C08G18/0823C08G18/0814C08G18/6659C08G18/758C09D175/04C08G18/792C09D163/00C09D7/65Y10T428/31565Y10T428/31511C08J7/0427C08J7/043C08J7/044C08L33/14C08L75/04B32B27/08
Inventor 开俊启神田俊宏藤田真人
Owner MITSUBISHI PLASTICS INC