Online-coated modified biaxially-oriented polyester film and preparation method therefor

A biaxially stretched polyester and polyester film technology, applied in the direction of coating, etc., can solve the problems of not being able to guarantee the barrier performance of materials, the impact of polyester film performance, and the residue of solvent coating, so as to reduce the harm to human body, The effect of reducing fire safety hazards and reducing surface roughness

Active Publication Date: 2020-02-14
佛山杜邦鸿基薄膜有限公司
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the disadvantages of the coating method of competing products on the market: 1. The solvent coating used will have residues that are not safe for food packaging; 2. The surface relies on greatly increasing the coating tension to improve the adhesion of the aluminum plating, but due to the tightness of the two sides of the coating contact transfer
[0007] However, the methods in the above-mentioned patents all apply an aqueous emulsion of a certain resin material on the surface of the polyester base material. Specifically, the aqueous emulsion formed by forcibly dispersing the resin in water under the act...

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
  • Online-coated modified biaxially-oriented polyester film and preparation method therefor
  • Online-coated modified biaxially-oriented polyester film and preparation method therefor
  • Online-coated modified biaxially-oriented polyester film and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0044] 1) The formulation of emulsion polymerization is as follows: 60 parts of vinylidene chloride, 30 parts of acrylic acid, 15 parts of methyl methacrylate, 3 parts of lauryl acrylate, 6 parts of vinyl acetate, 3 parts of cellulose acrylate, 0.3 parts Potassium persulfate, 1.8 parts of emulsifier OP-10, emulsion polymerization is obtained according to the following steps, and finally a certain amount of water is added to make the solid content of the emulsion to about 40 wt%. The specific operation is as follows:

[0045] a. Prepare the solution: first accurately weigh the initiator potassium persulfate in the formula, then weigh 1.5 parts of deionized water to prepare an aqueous initiator solution; prepare mixed monomers: accurately weigh the monomers in the formula, stir for 2 hours, and prepare Monomer mixture; prepare emulsifier aqueous solution: weigh emulsifier and dissolve in 2-5 parts of deionized water, add water to 50 parts, disperse for 2 hours, and make emulsifi...

preparation example 2

[0050] The preparation steps are the same as in Preparation Example 1, except that the amount of chitosan is changed to 1 part when the aqueous coating solution is prepared in step 2).

preparation example 3

[0052] The preparation steps were the same as in Preparation Example 1, except that the amount of chitosan was changed to 5 parts during step 2) when the aqueous coating liquid was prepared.

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides an online-coated modified biaxially-oriented polyester film, a preparation method therefor and use of the online-coated modified biaxially-oriented polyester film. According tothe modified biaxially-oriented polyester film, a single face or both faces of a polyester base film have coatings, the coatings are obtained through coating surfaces of the polyester base film with aqueous coating liquid and then carrying out volatile drying, the aqueous coating liquid comprises water-soluble resin, a curing agent, a surfactant, chitosan and functional assistants, and the water-soluble resin is obtained through copolymerizing the following monomers: vinylidene chloride, acrylic acid, alkyl (meth)acrylate, vinyl acetate and acrylic cellulose. After aluminizing, the film provided by the invention is good in barrier property and is particularly suitable for serving as a food packaging material; meanwhile, the adhesive power between the film and an aluminum layer is high, thepeeling strength reaches 8.7N/25mm or more; and due to high fastness of the aluminum layer, a dealuminizing phenomenon does not occur even if under high-heat high-humidity conditions, fire control potential safety hazards and harmfulness to human bodies are greatly reduced, and thus, the film has an obvious environment-friendly significance.

Description

technical field [0001] The invention belongs to the technical field of new materials, and specifically relates to a plastic film, more specifically to an online coating type modified biaxially stretched polyester film and a preparation method thereof. [0002] technical background [0003] Biaxially oriented polyester film (abbreviated as BOPET) has excellent comprehensive properties. It has high mechanical strength, good optical properties, wide service temperature, excellent barrier properties, oil resistance, corrosion resistance, etc., so its application fields are very wide. The application of BOPET film in printing, compounding, vacuum aluminum plating and other aspects is the most common. In the field of packaging materials, BOPET film has low water absorption and good water resistance, and is suitable for packaging foods with high water content. BOPET is made of amorphous polyester chip PET, which is obtained through drying process, melt extrusion, casting, and verti...

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): C08J7/048C08J5/18C09D151/02C09D7/65C08F251/02C08F220/06C08F218/08C08F214/08C08F220/14C08F220/18C08L67/02
CPCC08F251/02C08J5/18C08J7/042C08J2367/02C08J2405/08C08J2451/02C08F220/06C08F218/08C08F214/08C08F220/14
Inventor 何志彪谢勇李明强黄亦迎郑邦鸿罗剑锋何燕霞陶宏伟招洛彬
Owner 佛山杜邦鸿基薄膜有限公司
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