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Highly adhesive polyester film for optical use
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An easy-adhesive, polyester film technology, applied in optics, optical components, optical components, etc., can solve problems such as poor adhesion, and achieve the effect of good adhesion and excellent heat and humidity resistance
Active Publication Date: 2013-01-16
TOYOBO CO LTD
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Problems solved by technology
[0004] Generally, when using a biaxially oriented thermoplastic film such as a biaxially oriented polyester film or a biaxially oriented polyamide film, there is adhesion to various paints, adhesives, inks, etc. due to the high degree of crystal orientation on the film surface. Disadvantages of poor sex
Method used
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Embodiment 1
[0118] (1) Adjustment of coating liquid
[0119] The following paints were mixed to prepare a coating liquid.
[0120] Water 51.00% by mass
[0121] Isopropanol 30.00% by mass
[0122] Polyurethane resin (A-1) 12.58% by mass
[0123] have Azoline-based resin (B) 4.72% by mass
[0124] Particles 1.57% by mass
[0125] (Silica sol with an average particle diameter of 40 nm and a solid content concentration of 40% by mass)
[0126] Particles 0.08% by mass
[0127] (Silica sol with an average particle diameter of 450 nm and a solid content concentration of 40% by mass)
[0128] Surfactant 0.05% by mass
[0129] (Silicone-based, solid content concentration 100% by mass)
[0130] (2) Manufacture of optically adhesive polyester film
[0131] PET resin pellets having an intrinsic viscosity of 0.62 dl / g and containing substantially no particles as a film raw material polymer were dried at 135° C. for 6 hours under a reduced pressure of 133 Pa. After that, it was supplied to...
Embodiment 2
[0148] Except that the polyurethane resin was changed to polyurethane resin (A-2) having polycarbonate polyol as a constituent, it was carried out in the same manner as in Example 1 to obtain an easily-adhesive polyester film for optics and a laminated polyester film for optics. Ester film.
Embodiment 3
[0150] Except that the polyurethane resin was changed to the polyurethane resin (A-3) having polycarbonate polyol as a constituent, it was carried out in the same manner as in Example 1 to obtain an easily-adhesive polyester film for optics and a laminated polyester film for optics. Ester film.
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Abstract
A highly adhesive polyester film for optical use, which has excellent adhesion to an optical functional layer under high-temperature high-humidity conditions. The highly adhesive polyester film for optical use has a coating layer on at least one side of a polyester film, and the coating layer is mainly composed of an urethane resin which contains a polycarbonate polyol as a constituent, and a resin having an oxazoline group.
Description
technical field [0001] The present invention relates to an easily-adhesive polyester film for optics that is excellent in adhesiveness and heat-and-moisture resistance. Specifically, it relates to substrates suitable as optical functional films such as hard coat films, antireflection films, light diffusion sheets, prismatic lens sheets, near-infrared ray blocking films, transparent conductive films, and antiglare films mainly used in displays and the like. Easy-adhesive polyester film for optics. Background technique [0002] Generally, as a base material of an optical functional film used as a component of a liquid crystal display (LCD), polyethylene terephthalate (PET), acrylic acid, polycarbonate (PC), cellulose triacetate ( TAC), a transparent thermoplastic resin film formed of polyolefin, etc. [0003] When the above-mentioned thermoplastic resin film is used as a base material of various optical functional films, functional layers satisfying various uses are laminate...
Claims
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Application Information
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