High-transmittance polyester thin film and preparation method thereof

A technology of high-transparency polyester and transparent polyester, which is applied in the field of polyester film, can solve the problems of high continuity requirements, long time, and impact on the recycling and granulation of polyester chips, so as to improve sustainability and binding force Effects of preventing and improving light transmittance reduction

Active Publication Date: 2018-12-21
金华市星火塑料制品有限公司
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this production process has high requirements for the continuity of production, and it takes a long time from the start of production to the normal commissioning, and if the production interruption caused by film rupture occurs, online coating needs to be adjusted again; in addition, By bonding the a

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
  • High-transmittance polyester thin film and preparation method thereof
  • High-transmittance polyester thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0046] The present invention also provides a method for preparing a high permeability polyester film. The method comprises weighing the raw materials used in the core layer and the surface layer according to the formula, and then extruding them through a single screw or twin screw after drying and mixing devices. The machine is melted and mixed, the main extrusion and auxiliary extrusion are co-cast and extruded at the die head, the cast sheet is cooled, and the polyester film is obtained after longitudinal stretching, transverse stretching, and heat setting treatment.

[0047] It should be noted that the "longitudinal direction" of the aforementioned "longitudinal stretch" refers to the direction along which the polyester film moves, and the "lateral direction" of the "lateral stretch" refers to the direction along the width of the polyester film.

[0048] Further, in a specific production process, the longitudinal stretch ratio is 3.6 to 3.85, the transverse stretch ratio is 3.7 t...

Example Embodiment

[0053] Example 1

[0054] A polyester film includes a core layer and surface layers arranged on both sides of the core layer.

[0055] The surface layer includes 95% polyethylene terephthalate, 0.15% silica particles (with a particle size of 0.8μm), antioxidant 168 0.25%, antioxidant 1010 0.50%, and ultraviolet absorber UV-329 0.65%, antistatic agent (plastic antistatic agent 0006 produced by Zhongteng Chemical Co., Ltd.) 1.45%, dispersant (PEG, molecular weight 20000) 2%; the percentages are mass percentages;

[0056] The silica particles and the compatibilizer ABS-g-MAH (grafting rate≥0.5%) are ultrasonically dispersed in acetone, the acetone is recovered, and dried to obtain silica particles coated with the compatibilizer. Among them, the mass ratio of silica particles, compatibilizer ABS-g-MAH (grafting rate≥0.5%) and acetone is 1:0.07:19;

[0057] The preparation method of the polyester film includes:

[0058] The raw materials used in the core layer and the surface layer are wei...

Example Embodiment

[0062] Example 2

[0063] As in the polyester film provided in Example 1, in the modification treatment of silica particles, the mass ratio of silica particles, compatibilizer ABS-g-MAH (grafting rate ≥0.5%) and acetone is changed to 1:0.07:18, the rest remain unchanged, the preparation of polyester film is carried out, and the obtained polyester film is recorded as A2.

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
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of polyester thin films and in particular relates to a high-transmittance polyester thin film and a preparation method thereof. The high-transmittance polyester thin film comprises a core layer and a surface layer arranged at one side or two sides of the core layer, wherein the surface layer is prepared from the following components in percentage by mass: 93 to 97 percent of polyethylene terephthalate, 0.08 to 0.25 percent of inorganic particles and 2.75 to 6.92 percent of other auxiliary agents, wherein the inorganic particles are subjected to coating and modification treatment through a compatilizer. According to the high-transmittance polyester thin film provided by the invention, the inorganic particles subjected to the coating and modification treatment through the compatilizer are added into the surface layer, so that the binding capability of the inorganic particles and polyethylene terephthalate in the surface layer of the polyesterthin film is improved; a gap formed at the periphery of the inorganic particle in the biaxially-stretched and molded polyester thin film is reduced, so that the problem that the inorganic particles exist so that the light penetration rate is low is remarkably reduced; the binding force between the inorganic particles subjected to the coating and modification treatment through the compatilizer andpolyethylene terephthalate is relatively strong, and a series of appearance problems caused by the fact that the inorganic particles fall off are prevented.

Description

technical field [0001] The invention belongs to the technical field of polyester films, and in particular relates to a high-transparency polyester film and a preparation method thereof. Background technique [0002] Polyester film (PET) is a film material made of polyethylene terephthalate as a raw material, which is made into a thick sheet by extrusion and then biaxially stretched. The polyester film has many excellent characteristics: mechanical strength High, excellent optical performance, good electrical insulation performance, good barrier performance, wide operating temperature range (-70 ° C ~ 200 ° C), chemical corrosion resistance and good dimensional stability, etc., so it is widely used in packaging, electronic power and photography, Magnetic products and other fields. In recent years, due to the rapid development of liquid crystal display, polyester film also has important applications in the optical field. [0003] At present, the light transmittance of the po...

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
IPC IPC(8): C08L67/02C08K9/10C08K3/36C08K5/526C08K5/134C08K13/06C08J5/18B32B27/08B32B27/36B32B27/18
CPCB32B27/08B32B27/18B32B27/36C08J5/18C08J2367/02C08K3/36C08K5/1345C08K5/526C08K9/10C08K13/06
Inventor 曹立军
Owner 金华市星火塑料制品有限公司
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