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Optical polyester film

An optical polyester film and biaxially oriented film technology, applied in the field of polyester film, can solve the problems of easy adhesion and poor film surface performance, and achieve the effect of improving quality, improving quality and increasing shear force

Inactive Publication Date: 2020-09-22
孔维恒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the deficiencies of the existing technology, solve the problem of poor film surface performance and easy adhesion, and at the same time make the film trimming and cutting precision higher, the invention proposes an optical polyester film

Method used

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Embodiment approach

[0045] As an embodiment of the present invention, a plurality of mounting grooves 311 are evenly opened on the cutting roller 31; a mounting frame 314 is installed at the bottom of the mounting groove 311; Free movement; the mounting frame one 314 is fixedly equipped with a horizontal plate 315; the side walls on both sides of the mounting groove 311 are provided with accommodating grooves 317; the two ends of the horizontal plate 315 are inserted into the accommodating groove 317; A spring 316 is installed on the mounting frame 1 314; the spring 1 316 is located between the horizontal plate 315 and the bottom of the mounting groove 311; a round roller 313 is installed on the mounting frame 1 314; Protrude out of the surface of the cutting roller 31; the circular roller 313 is located between the two upper cutters 312 on the cutting roller 31; the rotation speed of the cutting roller 31 is greater than the gap between the film passing through the cutting roller 31 and the flat ...

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Abstract

The invention belongs to the technical field of a polyester film, and specifically belongs to an optical polyester film. The optical polyester film is a multi-layer co-extruded biaxially stretchable film; the surfaces of the two sides of a middle layer are each provided with a surface layer; the middle layer is made of polyethylene terephthalate (PET); each surface layer is composed of polyethylene terephthalate added with nano Al2O3 and an antistatic agent; the content of the nano Al2O3 in the surface layer is 5 wt% to 8 wt%; the content of the antistatic agent in the surface layer is 2 wt% to 3 wt%; the thickness of the surface layer is 3.5 micrometers; the thickness of the middle layer is 12-200 micrometers; the prepared optical polyester film provided by the invention has good surfaceproperties; the optical properties are not affected; and meanwhile the film is high in structural strength and long in service life.

Description

technical field [0001] The invention belongs to the technical field of polyester film, in particular to an optical polyester film. Background technique [0002] Polyester film has excellent mechanical properties, dimensional stability, chemical resistance and electrical insulation, and has been widely used in different fields such as packaging, electronic appliances, and optics. In the optical field, polyester films have been widely used in protective films, reflective films, diffusion films and brightness enhancement films in flat panel displays. The polyester film used for flat panel displays usually has high requirements on optical properties, such as the light transmittance of the diffusion film and the brightness enhancement film are usually required to be higher than 90%, and the haze is lower than 2.0; relatively speaking, the protective film The light transmittance is generally required to be higher than 94%, and the haze is lower than 1. The surface of the film in...

Claims

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Application Information

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IPC IPC(8): B65H35/02B65H23/26B65H18/10B32B27/36B32B27/08B32B27/18
CPCB32B27/08B32B27/18B32B27/36B32B2250/02B32B2250/244B65H18/10B65H23/26B65H35/02
Inventor 孔维恒杨忠寸
Owner 孔维恒
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