Unlock instant, AI-driven research and patent intelligence for your innovation.

Cross-linked polyvinyl alcohol film used for packaging liquid product, and preparation method thereof

A polyvinyl alcohol film, technology for liquid products, applied in the field of packaging liquid products

Inactive Publication Date: 2016-05-25
IP FULL ASSET LTD
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cross-linking process does not re

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
  • Cross-linked polyvinyl alcohol film used for packaging liquid product, and preparation method thereof
  • Cross-linked polyvinyl alcohol film used for packaging liquid product, and preparation method thereof
  • Cross-linked polyvinyl alcohol film used for packaging liquid product, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test
No Example Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a cross-linked polyvinyl alcohol film used for packaging a liquid product, and a preparation method thereof. The cross-linked polyvinyl alcohol film is a water-soluble film which contains a copolymer; the copolymer contains hydrolyzed vinyl acetate and a second monomer; the obtained vinyl acetate has a hydrolysis degree of 50 to 100%, which represents the percentage of conversion of vinyl acetate into a vinyl alcohol unit; and the second monomer is preferably selected from a compound group containing carboxylate or sulfonate function groups. The invention also relates to application of ultraviolet cross-linked water-soluble polymer or copolymer to production of a bag which is used for holding liquid metered by unit, e.g., laundry detergent and dish-washing liquid. The ultraviolet cross-linked water-soluble polymer or copolymer has improved crack resistance and does not influence dissolvability of the film.

Description

technical field [0001] The present invention relates to UV crosslinked polyvinyl alcohol polymer and copolymer films for packaging liquid products such as laundry and dishwashing liquids, wherein the crosslinking does not require the use of a crosslinking agent. Background technique [0002] Polyvinyl alcohol (PVOH) is a synthetic resin generally obtained by polyvinyl acetate alcoholysis, ie hydrolysis or saponification. Fully hydrolyzed PVOH, that is, almost all acetic acid is converted into alcohol, is a highly crystalline polymer with strong hydrogen bonds that can only be dissolved in hot water at temperatures above 60°C. If there is a sufficient amount of acetic acid after the hydrolysis of polyvinyl acetate, the polyvinyl alcohol is partially hydrolyzed, and the partially hydrolyzed polyvinyl alcohol has weak hydrogen bonds and low crystallinity, and can be dissolved in cold water, that is, the temperature Water below 50°F (10°C). Fully and partially hydrolyzed PVOH ...

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): C08J7/12
CPCC08J5/18C08J7/12C08L29/04C08J7/123C08J2329/04
Inventor 卡琳娜·费凡
Owner IP FULL ASSET LTD