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

High-barrier PVA-based composite film and preparation method thereof

A high-barrier, composite film technology, applied in the field of packaging film materials, can solve problems such as swelling and film performance degradation, and achieve the effect of increased internal friction, high mechanical properties, and less relative slippage

Inactive Publication Date: 2019-01-22
王晚秀
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the PVA film has good mechanical properties and gas barrier properties in a dry state, when it is in a humid or water environment, it will absorb water, swell or even dissolve, and these properties of the film will decline significantly.

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-barrier PVA-based composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-barrier PVA-based composite film, the following components are weighed by weight: 20 parts of corn starch, 50 parts of PVA, 10 parts of modified hydrotalcite, 30 parts of keratin solution, 10 parts of sodium carboxymethyl cellulose, polyethylene glycol 15 parts of diol, 3 parts of crosslinking agent, 10 parts of trimethylolpropane, 100 parts of water;

[0022] The modification method of hydrotalcite is as follows: add hydrotalcite to 50% ethanol aqueous solution, heat to 60°C, stir at constant temperature for 2 hours, then add potassium lauryl ether phosphate, adjust pH to 4, and react at 60°C 4h, it can be filtered, washed and dried, wherein the mass ratio of hydrotalcite to potassium lauryl ether phosphate is 5:1;

[0023] Further, the crosslinking agent is a mixture of boric acid, polyethylene glycol diglycidyl ether and glutaraldehyde, the mass ratio of which is 1:2:2.

[0024] The preparation method of above-mentioned a kind of high barrier property PVA bas...

Embodiment 2

[0030] A high-barrier PVA-based composite film, the following components are weighed by weight: 30 parts of cornstarch, 40 parts of PVA, 20 parts of modified hydrotalcite, 50 parts of keratin solution, 20 parts of sodium carboxymethylcellulose, polyethylene glycol 5 parts of diol, 10 parts of crosslinking agent, 3 parts of glycerin, 150 parts of water;

[0031] The modification method of hydrotalcite is as follows: add hydrotalcite to 50% ethanol aqueous solution, heat to 60°C, stir at constant temperature for 2 hours, then add potassium lauryl ether phosphate, adjust pH to 4, and react at 60°C 4h, it can be filtered, washed and dried, wherein the mass ratio of hydrotalcite to potassium lauryl ether phosphate is 4:1;

[0032] Further, the crosslinking agent is a mixture of boric acid, polyethylene glycol diglycidyl ether and glutaraldehyde, the mass ratio of which is 1:1:2.

[0033] The preparation method of above-mentioned a kind of high barrier property PVA base composite f...

Embodiment 3

[0039] A high-barrier PVA-based composite film, the following ingredients are weighed in parts by weight: 22 parts of corn starch, 48 parts of PVA, 12 parts of modified hydrotalcite, 35 parts of keratin solution, 12 parts of sodium carboxymethyl cellulose, polyethylene glycol 12 parts of diol, 7 parts of crosslinking agent, 8 parts of trimethylolpropane, 120 parts of water;

[0040] The modification method of hydrotalcite is as follows: add hydrotalcite to 50% ethanol aqueous solution, heat to 60°C, stir at constant temperature for 2 hours, then add potassium lauryl ether phosphate, adjust pH to 4, and react at 60°C 4h, it can be filtered, washed and dried, wherein the mass ratio of hydrotalcite to potassium lauryl ether phosphate is 5:1;

[0041] Further, the crosslinking agent is a mixture of boric acid, polyethylene glycol diglycidyl ether and glutaraldehyde, the mass ratio of which is 1:2:1.

[0042] The preparation method of above-mentioned a kind of high barrier propert...

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

No PUM Login to View More

Abstract

The invention provides a high-barrier PVA-based composite film, which comprises the following components (by weight): 20-30 parts of corn starch, 40-50 parts of PVA, 10-20 parts of modified hydrotalcite, 30-50 parts of a keratin solution, 10-20 parts of sodium carboxymethylcellulose, 5-15 parts of polyethylene glycol, 3-10 parts of a cross-linking agent, 3-10 parts of a plasticizer, and 100-150 parts of water. Since the modified hydrotalcite layer has a high degree of encapsulation of molecular chains of matrixes, the polyvinyl alcohol molecular chain is difficult to diffuse into the water, thus achieving the effect of fixing the matrix. And since the cross-linking effect between various matrix substances also blocks the diffusion of water molecules, the mechanical properties of the composite material are maintained at a high level.

Description

technical field [0001] The invention relates to a packaging film material, in particular to a high-barrier PVA-based composite film and a preparation method thereof. Background technique [0002] Food packaging is the last link in modern food production. It should not only facilitate storage and transportation, but also protect food quality and hygiene, thereby extending shelf life and increasing commodity value. With the strengthening of people's awareness of environmental protection, more and more people begin to pay attention to green environmental protection, and require green packaging for food packaging materials. Green packaging can also be called pollution-free packaging and environmentally friendly packaging, which refers to packaging that is harmless to the ecological environment and human health, can be reused and recycled, and is in line with sustainable development. Polyvinyl alcohol (PVA) is a hydrophilic polymer with a carbon chain as its main chain and a lar...

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): C08L29/04C08L3/02C08L89/00C08L1/28C08L71/02C08K13/06C08K9/04C08K3/26C08J5/18
CPCC08J5/18C08J2329/04C08J2389/00C08J2403/02C08J2471/02C08J2489/00C08K3/26C08K9/04C08K13/06
Inventor 王晚秀
Owner 王晚秀
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