Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Biaxially oriented polyester reflective film and manufacturing method therefor

A biaxially oriented, reflective film technology, used in reflective reflectors, chemical instruments and methods, other household appliances, etc., can solve problems such as low color contrast, inability to overcome insufficient moldability, hole deformation, etc. The effect of manufacturing deviation, excellent moldability

Pending Publication Date: 2021-11-12
TORAY ADVANCED MATERIALS KOREA
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of liquid crystal displays, the contrast representing light and dark of light is achieved by applying a voltage to the panel part to block or transmit light by the alignment of liquid crystals, but there is a problem in that the contrast of colors is significantly lower than that as in which each pixel emits light by itself The color contrast of the light-emitting element organic light-emitting diodes (OLEDs)
However, since the above-mentioned related art only improves the general reflective performance, it cannot overcome the problems of insufficient moldability and hole deformation during molding.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Biaxially oriented polyester reflective film and manufacturing method therefor
  • Biaxially oriented polyester reflective film and manufacturing method therefor
  • Biaxially oriented polyester reflective film and manufacturing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] A support layer A is formed on both sides of the light reflection layer B to form a reflective film in which layers are laminated in the order of support layer A / light reflection layer B / support layer A, and based on a total thickness of 250 μm, the support layer A is opposite to The thickness ratio of the light reflection layer B was 5%. The raw materials were designed so that the support layer A had a composition of 89.9% by weight of polyethylene terephthalate (Toray Advanced Materials Korea Inc., A9093) as homopolyester, 10% by weight of copolymer polyester (Eastman Chemical Company, GN071), and 0.1% by weight of silica having an average particle diameter of 2.0 μm as inorganic particles, and such that the support layer B has a composition: 63% by weight of polyparaphenylene as homopolyester Ethylene glycol dicarboxylate (Toray Advanced Materials Korea Inc., A9093), 15% by weight of copolymer polyester (Eastman Chemical Company, GN071), 8% by weight of ethylene as r...

Embodiment 2 to Embodiment 6

[0110] A biaxially oriented polyester reflective film was prepared in the same manner as in Example 1, except that the content of the constituent materials in the light reflective layer B was changed as shown in Table 1 below, and they were used as examples 2 to 1 respectively. Each of Example 6.

experiment example

[0125] 1. Thickness measurement

[0126] The thickness of the prepared biaxially oriented polyester reflective film was measured according to JIS C2151-2006 of the Japanese Standards Association, which is a test method for plastic films for electrical applications. The biaxially oriented polyester reflective film according to the present invention was cut in the thickness direction using a microtome to obtain cross-sectional samples. Then, the thicknesses of the support layer A and the light reflection layer B were measured by a cross-sectional photograph of a cross-sectional sample magnified 250 times by a transmission electron microscope S800 manufactured by Hitachi, Ltd.

[0127] In addition, after molding the prepared biaxially oriented polyester reflective film through the molding die 200, a cross-sectional sample was obtained, and the light-collecting structure of a plurality of depressions arranged in a lattice shape was measured in the same method as above. the thickn...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
storage modulusaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a biaxially oriented polyester reflective film capable of maintaining excellent reflection properties even after vacuum air pressure molding and hot press molding by having excellent moldability and suppressing deformation of an inner air layer of the reflective film during molding, and a manufacturing method therefor.

Description

technical field [0001] The following description relates to a biaxially oriented polyester reflective film and a method for producing the same, and more particularly, to a biaxially oriented polyester reflective film that has excellent moldability and is To suppress deformation of an inner porous layer of a reflective film so as to maintain excellent reflective characteristics even after vacuum compression molding and thermocompression molding, and a method of producing the same. Background technique [0002] Liquid crystal displays, which have been widely used in all application ranges such as mobile devices, tablet devices, monitors, notebook PCs, and TVs, are not self-emitting devices and thus require a backlight unit that supplies light from the rear. In the past, a line light source using a cold cathode ray tube was generally used as a light source of a backlight unit, but recently a point light source using a light emitting diode (LED) is widely used. [0003] It is n...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/12G02B1/04G02B6/00C08L67/02C08L67/00C08K3/36C08K3/26
CPCG02B5/12G02B1/04G02B6/0055C08J5/18C08J2367/02C08J2467/00C08K3/36C08K2003/265B32B3/28B32B27/36B32B7/023B32B27/20B32B7/03B32B27/08B32B3/26B29C48/0018B29C48/0017B29C48/0011B29K2995/003B29C48/08B29C55/143B32B2250/24B32B2307/518B32B2457/20B32B27/308B32B2264/1023B32B27/18B32B2264/1021B32B27/286B32B3/266B32B2307/54B32B2307/416B32B27/302B32B2264/302B32B2307/732B32B3/30B32B2307/40B32B2270/00B32B2264/1022B32B2264/104B32B27/32B32B2307/51B29K2067/003B29K2995/0053B32B2250/03B32B2250/40
Inventor 金志赫金吉中朴瑞镇
Owner TORAY ADVANCED MATERIALS KOREA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com