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

Film covering glue and preparation method thereof

A technology of laminating adhesive and adjusting temperature, applied in the direction of adhesive, adhesive type, adhesive additive, etc., can solve the problems of poor surface abrasion resistance, single color and low viscosity of the film-forming object, and achieve good surface abrasion resistance , Simple operation, high brightness effect

Active Publication Date: 2014-10-08
FUJIAN LONGDA BAMBOO
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing film-covering glue is a milky white transparent substance, which has the problems of single color, low viscosity, and poor wear resistance on the surface of the film-forming material.

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
  • Film covering glue and preparation method thereof
  • Film covering glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A kind of preparation method of coating adhesive provided by the invention comprises the following steps:

[0018] (1) Add 880-900 parts by weight of water into the reaction kettle, stir, adjust the temperature to 40-50°C, then add 75-80 parts by weight of polyvinyl alcohol, heat up to 75-80°C and keep warm for 42-48min ;

[0019] (2) Adjust the temperature to 80-85°C, add 135-150 parts by weight of formaldehyde, raise the temperature to 90-95°C, keep warm for 55-65min, adjust the pH value to 4.4-4.6, and then add 450-500 parts by weight of melamine modified phenolic Resin adhesive, stir evenly;

[0020] (3) Adjusting the pH value to 9.4-9.6 to obtain the coating glue.

[0021] As can be seen from the foregoing description, the beneficial effects of the present invention are:

[0022] (1) the film-coated glue prepared by the present invention is reddish-brown transparent, which overcomes the single problem of the color of the film-coated glue in the prior art;

[00...

Embodiment 1

[0033] 1. Put 880 kg of water into the reaction kettle, start the agitator to stir, and raise the temperature to 45°C, and put in 75 kg of polyvinyl alcohol.

[0034] 2. Raise the temperature to 78°C, the polyvinyl alcohol will gradually dissolve and become transparent, keep warm for 45 minutes, and keep the temperature between 80°C and 85°C to ensure the complete dissolution of the polyvinyl alcohol;

[0035] 3. Add 135 kg of formaldehyde, raise the temperature to 90°C, and keep it warm for 60 minutes. At this time, extract a small amount of the product in the reaction kettle and measure it with 4 cups at 40°C. Add hydrochloric acid with a mass concentration of 30%, adjust the pH value to 4.5, and add 450 kg of melamine-modified phenolic resin adhesive. Add the sodium hydroxide that mass concentration is 99%, regulate pH value to be 9.5; In reaction, the hydrochloric acid that mass concentration is 30% and the sodium hydroxide that mass concentration is 99% not only play the ...

Embodiment 2

[0039] 1. Put 900 kg of water into the reaction kettle, start the agitator to stir, and raise the temperature to 50°C, and put in 80 kg of polyvinyl alcohol.

[0040] 2. Raise the temperature to 80°C, the polyvinyl alcohol gradually dissolves and becomes transparent, keep warm for 48 minutes, and the temperature is controlled between 80°C-85°C to ensure that the polyvinyl alcohol is completely dissolved.

[0041] 3. Add 150 kg of formaldehyde, raise the temperature to 90°C, and keep it warm for 65 minutes. At this time, extract a small amount of the product in the reaction kettle, and measure it with 4 cups at 40°C. The measured viscosity value is 22〃, and the reaction kettle Add hydrochloric acid with a mass concentration of 30%, adjust the pH value to 4.6, and add 500 kg of melamine-modified phenolic resin adhesive. Add the sodium hydroxide that mass concentration is 99%, regulate pH value to be 9.6; In reaction, the hydrochloric acid that mass concentration is 30% and the s...

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
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses film covering glue and a preparation method thereof. The preparation method comprises the steps of (1) adding 880-900 weight parts of water in a reaction kettle, mixing, regulating the temperature to 40-50 DEG C, then adding 75-80 weight parts of polyvinyl alcohol, raising the temperature to 40-50 DEG C and holding for 42-48min; (2) regulating the temperature to 80-85 DEG C, adding 135-150 weight parts of formaldehyde, raising the temperature to 90-95 DEG C, holding for 55-65min, regulating a pH value to 4.4-4.6, then adding 450-500 weight parts of melamine modified phenolic resin adhesive, and uniformly mixing; and (3) regulating the pH value to 9.4-9.6 to obtain the film covering glue. The preparation method of the film covering glue is simple to operate and is beneficial to industrial production. The film covering glue prepared by the preparation method has the advantages of high brightness, good surface abrasion resistance, and good flexibility.

Description

technical field [0001] The invention relates to the technical field of glue, in particular to a coating glue and a preparation method thereof. Background technique [0002] Laminating glue refers to a kind of glue that combines BOPP film on paper. It can be widely used in the packaging of all color-printed products such as food, beverages, fruits, and children's toys, as well as the varnishing of various veneer panels, etc., and can be made into quick-drying glue, jigsaw glue, and sealing glue with simple modification. And other products, has the advantages of one product with multiple uses. The existing coating glue is a milky white transparent substance, which has the problems of single color, low viscosity, and poor wear resistance on the surface of the film-forming material. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing a coating adhesive with high viscosity and good surface wear re...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/14C09J129/04C09J11/06
CPCC09J161/14C08L29/14
Inventor 真道明
Owner FUJIAN LONGDA BAMBOO
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