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Highly adhesive multilayer thermoplastic resin film

A thermoplastic resin film, an easy-to-adhesive technology, applied in the direction of synthetic resin layered products, layered products, nanotechnology, etc., can solve problems such as poor adhesion, achieve excellent adhesion, and excellent chemical resistance adhesion , the effect of suppressing interference fringes

Active Publication Date: 2009-12-16
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, the surface of biaxially oriented polyester film is in a highly crystalline orientation state, so it has the disadvantage of poor adhesion to various coatings and inks. Therefore, research has been carried out to make the surface of polyester film adhesive by various methods.

Method used

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  • Highly adhesive multilayer thermoplastic resin film
  • Highly adhesive multilayer thermoplastic resin film
  • Highly adhesive multilayer thermoplastic resin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] PET pellets (intrinsic viscosity 0.63dl / g) without external particles are fully vacuum-dried and supplied to the extruder, melted at a temperature of 285°C, extruded into a sheet form from a T-die, and applied static electricity The tape casting method is wound on a mirror casting drum with a surface temperature of 25°C and allowed to cool and solidify. The unstretched film thus obtained was heated to a temperature of 88° C. and stretched 3.3 times in the longitudinal direction to prepare a uniaxially stretched film. This uniaxially stretched film was subjected to corona discharge treatment in air, and the following laminated film forming coating liquid was coated on the treated surface. The uniaxially stretched film coated with the coating solution for forming a laminated film is held in a preheating zone by clamps, dried at a temperature of 95°C, and then continuously stretched in the width direction in a heating zone at a temperature of 110°C. Stretching 3.4 times, ...

Embodiment 2

[0129] A laminated PET film was obtained in the same manner as in Example 1, except that the following laminated film-forming coating liquid was used instead of the laminated film-forming coating liquid used in Example 1.

[0130] "Laminated film forming coating solution"

[0131] - The coating liquid A1, the coating liquid B1, and the coating liquid C1 used the same thing as Example 1.

[0132] The above-mentioned coating solution A1 and coating solution B1 were mixed at a solid content weight ratio, coating solution A1 / coating solution B1 = 30 / 70, and 100 parts by weight of coating solution C1 was mixed with respect to 100 parts by weight to prepare a laminated film forming coating. liquid. In this case, the solid content weight ratio of each coating liquid was coating liquid A1 / coating liquid B1 / coating liquid C1=30 / 70 / 100.

[0133] The results are shown in Table 1. Excellent initial adhesion, heat-and-moisture resistance, and chemical-resistant adhesion.

Embodiment 3

[0135] A laminated PET film was obtained in the same manner as in Example 1, except that the following laminated film-forming coating liquid was used instead of the laminated film-forming coating liquid used in Example 1.

[0136] "Laminated film forming coating solution"

[0137] - The coating liquid A1, the coating liquid B1, and the coating liquid C1 used the same thing as Example 1.

[0138] · Coating solution D1:

[0139] A coating solution obtained by diluting an oxazoline-based crosslinking agent ("EPOCROS" WS-300 manufactured by Nippon Catalyst Co., Ltd.) with water.

[0140] The above-mentioned coating solution A1 and coating solution B1 were mixed according to the weight ratio of solid components, coating solution A1 / coating solution B1 = 30 / 70, and 100 parts by weight of coating solution C1 and 5 parts by weight of coating solution D1 were mixed with respect to the 100 parts by weight. A laminated film forming coating solution was prepared. In this case, the soli...

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Abstract

Disclosed is a highly adhesive multilayer thermoplastic resin film which is excellent in adhesion to a metal layer, especially to a metal vapor deposition layer. This highly adhesive multilayer thermoplastic resin film is also excellent in wet-heat-resistant adhesion and chemical-resistant adhesion. Specifically disclosed is a highly adhesive multilayer thermoplastic resin film which is characterized in that a multilayer film mainly composed of two polyester resins having different glass transition temperatures and a melamine crosslinking agent (C) and having a surface energy of 48-55 mN / m is formed on at lest one side of a thermoplastic resin film. The highly adhesive multilayer thermoplastic resin film is also characterized in that a polyester resin (A) of higher glass transition temperature has a glass transition temperature not less than 110 DEG C, while a polyester resin (B) of lower glass transition temperature has a glass transition temperature not less than 60 DEG C but less than 110 DEG C, and the melamine crosslinking agent (C) is contained in an amount of 75-200 parts by weight per 100 parts by weight of the total of the two polyester resins.

Description

technical field [0001] The present invention relates to an easy-adhesive laminated thermoplastic resin film, and more specifically, to a film having excellent adhesion to a metal layer, especially to a metal vapor-deposited layer, and moisture-heat-resistant adhesiveness, and to various chemical solutions. Easy-adhesive laminated thermoplastic resin film with excellent chemical resistance and adhesion. Background technique [0002] Thermoplastic resin films, especially biaxially oriented polyester films, have excellent properties in dimensional stability, mechanical properties, heat resistance, transparency, electrical properties, etc., and therefore are used as optical members, display peripheral materials, display members, Packaging materials, electrical insulation materials, various photosensitive materials, plate-making and printing materials and other multi-purpose substrate films are widely used. [0003] Biaxially oriented polyester films generally have a highly crys...

Claims

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Application Information

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IPC IPC(8): B32B27/36
CPCB32B27/36Y10T428/2813Y10T428/25Y10T428/31794Y10T428/31786B32B27/08B82Y30/00
Inventor 高田育堀内光弘柳桥真人
Owner TORAY IND INC
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