High-strength adhesive for a corrugated paperboard, and preparation method thereof

A corrugated board and adhesive technology, applied in the directions of polymer adhesive additives, non-polymer adhesive additives, adhesive types, etc.

Inactive Publication Date: 2020-04-07
彭敏
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most corrugated cardboard adhesives on the market are starch adhesives, most of which are corn glue. These ordinary adhesives can only meet some cartons with low strength requirements. During the handling process, the carton is not allowed to be glued due to the humidity of the environment, so an adhesive with better bonding strength is needed to ensure the strength of the carton

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-strength adhesive for a corrugated paperboard, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-strength adhesive for corrugated cardboard, the raw materials include in parts by weight: 30 parts of modified starch, 3 parts of polyvinyl alcohol, 2 parts of vinyl acetate, 0.5 part of acrylic acid, 0.8 part of stabilizer, 0.3 part of mineral oil, 1 part of acrylamide, 2 parts of isocyanate, 1.2 parts of CP-88 water repellent agent, 2 parts of cellulose, 1 part of polylactic acid, 0.8 part of agar.

[0021] Wherein, the modified starch is obtained by adding an oxidizing agent to modify the starch after acid hydrolysis, and the oxidizing agent is ammonium persulfate. The isocyanate is MDI. The cellulose is hydroxyethyl cellulose. Described stabilizing agent is polyethylene glycol.

[0022] The preparation method of the above-mentioned high-strength adhesive for corrugated cardboard comprises the following steps:

[0023] Step 1, adding starch to 1-2 times by weight of 20% hydrochloric acid solution, heating to 50°C for 40 minutes, adding an oxidant after cool...

Embodiment 2

[0028] A high-strength adhesive for corrugated cardboard, the raw materials include in parts by weight: 34 parts of modified starch, 4 parts of polyvinyl alcohol, 3 parts of vinyl acetate, 1.1 parts of acrylic acid, 1.3 parts of stabilizer, 0.7 parts of mineral oil, 2 parts of acrylamide, 2.4 parts of isocyanate, 1.7 parts of CP-88 water repellent agent, 3 parts of cellulose, 1.6 parts of polylactic acid, 1.2 parts of agar.

[0029] Wherein, the modified starch is obtained by adding an oxidizing agent to modify the starch after acid hydrolysis, and the oxidizing agent is potassium persulfate. The isocyanate is HDI. The cellulose is hydroxypropyl cellulose. The stabilizer is sodium alginate.

[0030] The preparation method of the above-mentioned high-strength adhesive for corrugated cardboard comprises the following steps:

[0031] Step 1, adding starch to 1-2 times by weight of 20% hydrochloric acid solution, heating to 50°C for 40 minutes, adding an oxidant after cooling, ...

Embodiment 3

[0036] A high-strength adhesive for corrugated cardboard, the raw materials include in parts by weight: 40 parts of modified starch, 5 parts of polyvinyl alcohol, 4 parts of vinyl acetate, 1.7 parts of acrylic acid, 1.5 parts of stabilizer, 0.9 parts of mineral oil, 4 parts of acrylamide, 3 parts of isocyanate, 2 parts of CP-88 water repellent agent, 4 parts of cellulose, 3 parts of polylactic acid, 1.5 parts of agar.

[0037] Wherein, the modified starch is obtained by adding an oxidizing agent to modify the starch after acid hydrolysis, and the oxidizing agent is sodium persulfate. The isocyanate is TDI. The cellulose is carboxymethyl cellulose. The stabilizer is gum arabic.

[0038] The preparation method of the above-mentioned high-strength adhesive for corrugated cardboard comprises the following steps:

[0039] Step 1, adding starch to 1-2 times the weight of 20% hydrochloric acid solution, heating to 60°C for 30 minutes, adding an oxidizing agent after cooling, and r...

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-strength adhesive for a corrugated paperboard. The high-strength adhesive is prepared from the following raw materials: modified starch, polyvinyl alcohol, vinyl acetate,acrylic acid, a stabilizer, mineral oil, acrylamide, isocyanate, a CP-88 water repellent agent, cellulose, polylactic acid and agar. The preparation method comprises the following steps: carrying outacidolysis oxidation on starch; adjusting the pH value of the obtained modified starch emulsion to 4.5 to 5.5; and adding acrylamide, cellulose and vinyl acetate, heating, adding acrylic acid in a dropwise manner, keeping the temperature, cooling the secondary modified starch emulsion, adjusting the pH value to 6.0-8.0, adding polyvinyl alcohol, a stabilizer, mineral oil, isocyanate and a CP-88 water repellent agent, dispersing, finally adding polylactic acid and agar, and stirring to obtain the product. The prepared adhesive is used for compounding corrugated paperboards so as to significantly improve the strength of the corrugated paperboards.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a high-strength adhesive for corrugated cardboard and a preparation method thereof. Background technique [0002] With the development of the packaging industry, the consumption of adhesives has maintained a high level. The annual glue consumption of the global packaging industry accounts for about 30% of the total adhesive consumption. Based on this, it is speculated that the packaging industry may be the largest consumer market for adhesives. Adhesives for packaging can be broadly classified into two types. One is used to produce packaging materials such as cardboard, corrugated cardboard, and composite paper. The other is suitable for labels and closures. With the development of the packaging industry, the demand for adhesives will increase. Therefore, the type of adhesive will continue to change, the performance will continue to improve, and it wil...

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): C09J151/02C09J129/04C09J191/00C09J167/04C09J105/12C09J11/06C09J11/08C08F251/00C08F218/08
CPCC08F251/00C08L2205/035C09J11/06C09J11/08C09J151/02C08F218/08C08L29/04C08L91/00C08L67/04C08L5/12C08K5/29
Inventor 彭敏
Owner 彭敏
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