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A kind of preparation method of high-strength antibacterial coated paper

A technology of coated paper and antibacterial agent is applied in the field of preparation of antibacterial coated paper, which can solve the problems of safety risks, poor barrier properties of antibacterial paper, low mechanical strength, etc., and achieves good promotion prospects, high barrier properties, and high mechanical strength. Effect

Active Publication Date: 2022-06-28
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of poor barrier properties, low mechanical strength, cumbersome preparation of antibacterial agents and safety risks in the prior art, and provide a method for preparing antibacterial coated paper for food

Method used

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  • A kind of preparation method of high-strength antibacterial coated paper
  • A kind of preparation method of high-strength antibacterial coated paper
  • A kind of preparation method of high-strength antibacterial coated paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The cellulose pulp sheet was pulverized to obtain flocculent cellulose raw materials with an average length and diameter of 2.2 mm and 0.03 mm, respectively. Pour 40ml of acetic acid, 20ml of acetic anhydride and 0.05ml of concentrated sulfuric acid into a three-necked flask, add 10g of flocculent cellulose raw material under stirring with a 150rmp stirring paddle, dissolve and react at 60°C for 30min to obtain a cellulose solution. 2 ml of acetyl tributyl citrate and 6 g of thymol were successively added to the cellulose solution and stirred for 20 min to obtain an antibacterial coating solution. Next, the antibacterial coating liquid was coated on the surface of the kraft paper, and the coating amount was 20 g / m 2 , air-dried at room temperature for 2h. Finally, the air-dried coated paper was immersed in deionized water for 3 times, thoroughly washed away the residual solvent, and dried in a drum dryer to obtain an antibacterial coated paper.

Embodiment 2

[0038]The cellulose pulp sheet was pulverized to obtain flocculent cellulose raw materials with an average length and diameter of 2.2 mm and 0.03 mm, respectively. Pour 60ml of acetic acid, 40ml of acetic anhydride and 0.1ml of concentrated sulfuric acid into a three-necked flask, add 10g of flocculent cellulose raw materials under stirring with a 150rmp stirring paddle, dissolve and react at 60°C for 30min to obtain a cellulose solution. 2 ml of acetyl tributyl citrate and 6 g of thymol were successively added to the cellulose solution and stirred for 20 min to obtain an antibacterial coating solution. Next, the antibacterial coating liquid was coated on the surface of the kraft paper, and the coating amount was 20 g / m 2 , air-dried at room temperature for 2h. Finally, the air-dried coated paper was immersed in deionized water for 3 times, thoroughly washed away the residual solvent, and dried in a drum dryer to obtain an antibacterial coated paper.

Embodiment 3

[0040] The cellulose pulp sheet was pulverized to obtain flocculent cellulose raw materials with an average length and diameter of 2.2 mm and 0.03 mm, respectively. Pour 80ml of acetic acid, 60ml of acetic anhydride and 0.3ml of concentrated sulfuric acid into a three-necked flask, add 10g of flocculent cellulose raw material under stirring with a 150rmp stirring paddle, dissolve and react at 60°C for 30min to obtain a cellulose solution. 2 ml of acetyl tributyl citrate and 6 g of thymol were successively added to the cellulose solution and stirred for 20 min to obtain an antibacterial coating solution. Next, the antibacterial coating liquid was coated on the surface of the kraft paper, and the coating amount was 20 g / m 2 , air-dried at room temperature for 2h. Finally, the air-dried coated paper was immersed in deionized water for 3 times, thoroughly washed away the residual solvent, and dried in a drum dryer to obtain an antibacterial coated paper.

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Abstract

The invention provides a preparation method of antibacterial coated paper for food, comprising the following steps: (1) pulverizing cellulose pulp board to obtain flocculent cellulose raw material; (2) preparing acetylation solution; (3) flocculent The cellulose raw material is added into the acetylation solution to dissolve and react to obtain an acetylated cellulose solution; (4) adding a plasticizer and an antibacterial agent to the acetylated cellulose solution in turn to obtain an antibacterial coating solution; (5) applying the antibacterial coating The liquid is evenly coated on the surface of the paper, and the antibacterial coated paper is obtained after air drying; (6) the antibacterial coated paper is washed to remove residual solvent and dried. The invention solves the existing problems of traditional packaging paper by coating the antibacterial coating liquid on the surface of paper so that it not only has antibacterial properties, but also has superior properties such as degradability, high barrier property, high mechanical strength, and the antibacterial agent used is safe and convenient. problems, with better prospects for promotion.

Description

technical field [0001] The invention belongs to the field of food packaging, and particularly relates to a preparation method of antibacterial coated paper. Background technique [0002] In recent years, waste caused by food spoilage has attracted widespread attention. According to recent statistics from the Food and Agriculture Organization of the United Nations, as much as one-third of food is thrown away due to spoilage before it is eaten. The growth of microorganisms in food is an important factor in its spoilage and waste. This requires food packaging not only to store food, but also to inhibit the growth of microorganisms and prolong the shelf life of food. [0003] Using antibacterial paper to package food can not only inhibit the growth of microorganisms in food, but also has the characteristics of green environmental protection and biodegradation. The antibacterial effect of antibacterial paper mainly depends on the quality of the antibacterial agent. At present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/36D21H19/14D21H19/34D21H17/06D21H17/14D21H17/21D21H17/27C08B3/06
CPCD21H21/36D21H19/14D21H19/34D21H17/06D21H17/14D21H17/21D21H17/27C08B3/06
Inventor 许凤张健康游婷婷陈阳雷
Owner BEIJING FORESTRY UNIVERSITY
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