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

Composite barrier coated paper and processing method thereof

A processing method and technology for coated paper, which can be used in paper, papermaking, specialty paper, etc., and can solve the problems of paper moisture loss, affecting coating adhesion, paper flexibility, and poor product performance.

Inactive Publication Date: 2018-06-26
CHANGDE JINDE NEW MATERIAL TECH CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the storage of the existing paper, the moisture of the paper will be lost, resulting in a decrease in the moisture content of the paper, and even curling, which will affect the adhesion of the coating in the subsequent steps and the flexibility of the paper, and limit the drying efficiency of the subsequent process. Temperature range, resulting in poor product performance, or even not being able to be used in production, resulting in waste
[0003] The traditional method to maintain the moisture balance in the paper is to spray steam on the surface of the paper to moisten the paper, but this method cannot accurately control the moisture content of the paper, and it is easy to cause the paper to absorb too much water, resulting in swelling of the paper fibers and affecting the subsequent Processing performance

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
  • Composite barrier coated paper and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] (1) Coatings that provide a composite barrier coating layer:

[0078] Stir 0.5kg of bentonite and 35kg of water evenly at a speed of 650r / min to obtain a pre-batch.

[0079] Stir the above pre-mixture, 10kg of polyvinyl alcohol, 25kg of ethylene-vinyl acetate copolymer and 3kg of 1,2-butanediol evenly at a speed of 380r / min to obtain a coating.

[0080] (2) After unwinding the base paper, use the above coatings to coat the front and back of the base paper respectively (the coating amount is 5g / m 2 ), and dried at 100°C to obtain the base paper.

[0081] (3) After the film is unrolled, the film is glued (the amount of glue on the film is 5.5g / m 2 ) to obtain a coated film.

[0082] (4) After laminating the coating film and the base paper, varnish was applied, dried at 110° C., cooled, and rolled to obtain a composite barrier coated paper.

[0083] The composite barrier coated paper prepared in Example 1 was stored for 8 months for measurement. Compared with the base ...

Embodiment 2

[0091] (1) Coatings that provide a composite barrier coating layer:

[0092] Stir 3kg of montmorillonite and 45kg of water evenly at a speed of 750r / min to obtain a pre-mixture.

[0093] The polyvinyl alcohol (number average molecular weight is 2000) of above-mentioned pre-batching, 5kg, 40kg degree of hydrolysis is the ethylene-vinyl acetate copolymer (number average molecular weight is 1200) of 45%, 2.5kg1, 2-butanediol and 2.5kg1, 2-Hexanediol was stirred evenly at a speed of 440r / min to obtain a coating.

[0094] (2) After unwinding the base paper, use the above coatings to coat the front and back of the base paper respectively (the coating amount is 5.5g / m 2 ), and dried at 110°C to obtain the base paper.

[0095] (3) After the film is unrolled, the film is glued (the amount of glue on the film is 6.0g / m 2 ) to obtain a coated film.

[0096] (4) After laminating the coating film and the base paper, varnish was applied, dried at 120° C., cooled, and rolled to obtain a ...

Embodiment 3

[0099] (1) Coatings that provide a composite barrier coating layer:

[0100] 1.4kg of montmorillonite, 0.6kg of kaolin and 40kg of water were evenly stirred at a speed of 700r / min to obtain a pre-mixture.

[0101] The polyvinyl alcohol (number average molecular weight is 2000) of above-mentioned pre-batching, 15kg, 30kg degree of hydrolysis are 60% ethylene-vinyl acetate copolymer (number average molecular weight is 1150) and 4kg of 1,2-pentanediol in 400r Stir evenly at a rate of 1 / min to obtain a coating.

[0102] (2) After unwinding the base paper, use the above coatings to coat the front and back of the base paper respectively (the coating amount is 4.5g / m 2 ), and dried at 80°C to obtain the base paper.

[0103] (3) After the film is unrolled, the film is glued (the amount of glue on the film is 5.5g / m 2 ) to obtain a coated film.

[0104] (4) After laminating the coating film and the base paper, varnish was applied, dried at 90° C., cooled, and rolled to obtain a com...

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
Glue amountaaaaaaaaaa
Login to View More

Abstract

The present application provides composite barrier coated paper and a processing method thereof. The composite barrier coated paper comprises a paper substrate and a composite barrier coating layer coating the surface of the paper substrate, wherein the composite barrier coating layer is composed of 5-15 parts by mass of polyvinyl alcohol, 25-40 parts by mass of ethylene-vinyl acetate copolymer, 0.5-3 parts by mass of a layered silicate, 3-5 parts by mass of a 1,2-position o-diol of C4-C10 linear alkyl and 35-45 parts by mass of water. According to the composite barrier coated paper provided by the invention, the composite barrier coating layer coats the surface of the paper substrate, coatings of the composite barrier coating layer adopt the polyvinyl alcohol and the ethylene-vinyl acetate copolymer which can make water vapor penetrated for forming a film, the layered silicate with a sheet-shaped structure is adopted to extend the passing path of water molecules to prevent moisture loss, and therefore the composite barrier coated paper has an excellent balance moisturizing effect and prevents curling.

Description

technical field [0001] The invention relates to the technical field of barrier coated paper, in particular to composite barrier coated paper and a processing method thereof. Background technique [0002] Paper has many advantages, such as certain rigidity and toughness, good surface printability, non-toxicity, low cost and excellent biodegradability, etc., so it is widely used in various fields, and the most widely used is the packaging industry . However, during the storage of the existing paper, the moisture of the paper will be lost, resulting in a decrease in the moisture content of the paper, and even curling, which will affect the adhesion of the coating in the subsequent steps and the flexibility of the paper, and limit the drying efficiency of the subsequent process. The temperature range leads to poor product performance, and even cannot be used for production, resulting in waste. [0003] The traditional method to maintain the moisture balance in the paper is to ...

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): D21H27/20D21H19/44D21H19/40
CPCD21H19/40D21H19/44D21H27/20
Inventor 余赞彭宁钟文罗臻钱正宇田璐钟学选覃忠国杜建军
Owner CHANGDE JINDE NEW MATERIAL TECH CO LTD
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