Biaxially oriented polyethylene terephthalate film and method for producing same

A polyethylene terephthalate film, polyethylene terephthalate technology, applied in the field of biaxially oriented polyethylene terephthalate film, can solve thermal dimensional stability, curling To avoid problems such as deterioration of properties, to achieve the effects of excellent thermal dimensional stability, small curl, and excellent processing adaptability

Active Publication Date: 2014-12-24
TORAY IND INC
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the flexibility of electronic devices, plastic films are used instead of glass used as conventional substrates, but when plastic films are used as substrates of electronic devices, thermal expansion during the formation of transparent conductive layers and the formation of light-emitting and power generation layers , thermal dimensional stability due to heat shrinkage, and deterioration of curling properties have become major problems

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 polyethylene terephthalate film and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0126] Embodiments of the present invention will be described based on examples.

reference example 1

[0128] 194 parts by mass of dimethyl terephthalate and 124 parts by mass of ethylene glycol were put into a transesterification apparatus, and the contents were heated to a temperature of 140° C. to dissolve them. Thereafter, while stirring the contents, 0.1 parts by mass of magnesium acetate tetrahydrate and 0.03 parts by mass of antimony trioxide were added, and methanol was distilled off at a temperature of 140 to 230° C. to carry out a transesterification reaction. Next, 1 mass part (0.05 mass part as trimethyl phosphate) of the 5 mass % ethylene glycol solution of trimethyl phosphate was added. When an ethylene glycol solution of trimethyl phosphate is added, the temperature of the reaction content decreases. Then, stirring was continued until the temperature of the reaction content returned to a temperature of 230° C. while distilling off excess ethylene glycol. In this way, after the temperature of the reaction content in the transesterification reaction apparatus reac...

reference example 2

[0130] Using a rotary vacuum polymerization device, the PET particles X obtained in the above-mentioned Reference Example 1 were 0.65 Solid state polymerization was carried out at a temperature of 230°C for 15 hours under a reduced pressure of 0.1 kPa to obtain PET particles with an intrinsic viscosity of 0.77 X 0.77 .

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
hazingaaaaaaaaaa
heat shrinkage ratioaaaaaaaaaa
heat shrinkage ratioaaaaaaaaaa
Login to view more

Abstract

This film provides a polyethylene terephthalate film whereby dimensional variation in various steps can be reduced, particularly when the film is used as a substrate film for a flexible device, and that is suitable as a substrate film having minimal curl and excellent appropriateness for processing. This biaxially oriented polyethylene terephthalate film has a degree of crystallinity (Xc) of 0.35 to 0.50, the intrinsic viscosity (IV) of the resin constituting the film is 0.66-1.0 dl / g, the coefficient of thermal expansion at a temperature of 50-170 DEG C in each of the longitudinal direction and width direction of the film is 0.29 ppm / DEG C, and the thermal shrinkage at 180 DEG C in each of the longitudinal direction and width direction of the film is 0.5%-1.0%.

Description

technical field [0001] The present invention relates to a biaxially oriented polyethylene terephthalate film excellent in thermal dimensional stability in a high-temperature region. The biaxially-oriented polyethylene terephthalate film of this invention can be used suitably for the base film for flexible devices, etc. Among them, the biaxially oriented polyethylene terephthalate film of the present invention is especially used as an organic electroluminescent (hereinafter sometimes referred to as EL) display, electronic paper, organic EL lighting, organic solar cell, dye-sensitized type When used as a base film for solar cells and separators, a base film with little dimensional change in various processes, small curl, and excellent processing suitability can be obtained. Background technique [0002] In recent years, various electronic devices have applications that require weight reduction, thinning, and degree of freedom in shape, and flexibility has attracted attention....

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): B29C55/12C08J5/18B29K67/00B29L7/00B29L31/34
Inventor 高桥健太町田哲也东大路卓司
Owner TORAY IND INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap