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Trace coating food packaging paper and manufacturing method thereof

A technology for food wrapping paper and its production method, which is applied in the direction of wrapping paper, wrapping paper, packaging, etc., can solve the problems of poor oil resistance and barrier performance, poor mechanical properties, etc., improve the retention rate of fillers, avoid waxing and laminating, good adhesion effect

Pending Publication Date: 2021-02-09
济南灏源纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of poor oil resistance and barrier properties and mechanical properties of paper-based food packaging materials in the prior art, the present invention provides a micro-coated food packaging paper and a manufacturing method thereof. Cross-linking is coated on the surface of the paper, thereby improving the oil resistance barrier performance, antibacterial performance, mechanical performance and printability of the paper, and the raw materials used can be recycled, which is green and environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) The preparation method of coating liquid is: dissolving chitosan in acetic acid solution, the mass concentration of chitosan after dissolving is 0.4%, then adding ethylene dianhydride with 6% mass of chitosan as cross-linking agent, heating To 55°C, react for 40 minutes to obtain a coating solution;

[0032] (2) Mixed wood pulp that is uniformly mixed with short-fiber wood pulp, long-fiber wood pulp, chitosan, and titanium dioxide. The mass concentration of pulp is 5%, and the mass concentration of short-fiber wood pulp is 7%; the chitosan addition is 7% of wood pulp dry weight; the addition of described titanium dioxide is 20% of wood pulp dry weight ;

[0033] (3) The mixed pulp in the step (1) is subjected to wet papermaking, and preliminary drying is carried out after the papermaking, and the moisture content of the paper after drying is 18wt%;

[0034] (4) Micro coating: Coating the pre-dried paper, the coating conditions are: drive side / operating side: 20 / 20...

Embodiment 2

[0036] (1) The preparation method of the coating liquid is: dissolving chitosan in acetic acid solution, the mass concentration of chitosan after dissolving is 0.5%, and then adding phosphorus oxychloride with 8% mass of chitosan as a cross-linking agent, Raise the temperature to 60°C and react for 30 minutes to obtain the coating liquid;

[0037] (2) Mixed wood pulp that is uniformly mixed with short-fiber wood pulp, long-fiber wood pulp, cationic starch, and talcum powder, in which the dry mass of long-fiber wood pulp is 40% of the dry mass of short-fiber wood pulp, and long-fiber wood pulp The pulp mass concentration is 5%, and the mass concentration of short-fiber wood pulp is 6%. The cationic starch addition is 6% of the wood pulp dry weight; the described talc powder addition is 25% of the wood pulp dry weight. %;;

[0038] (3) The mixed pulp in the step (1) is subjected to wet papermaking, and preliminary drying is carried out after the papermaking, and the moisture co...

Embodiment 3

[0041] (1) The preparation method of coating liquid is: dissolving chitosan in acetic acid solution, the mass concentration of chitosan after dissolving is 0.3%, then adding ethylene dianhydride with 5% mass of chitosan as cross-linking agent, heating to 50°C, and react for 50 minutes to obtain a coating solution;

[0042](2) Mixed wood pulp that is uniformly mixed with short-fiber wood pulp, long-fiber wood pulp, chitosan, and calcium carbonate, in which the dry mass of long-fiber wood pulp is 20% of the dry mass of short-fiber wood pulp, Wood pulp mass concentration is 3%, and the mass concentration of short fiber wood pulp is 8%; Described chitosan addition is 8% of wood pulp dry weight; The addition of described calcium carbonate is wood pulp dry weight 8%; 15%;

[0043] (3) The mixed pulp in the step (1) is subjected to wet papermaking, and preliminary drying is carried out after the papermaking, and the moisture content of the paper after drying is 15wt%;

[0044] (4) ...

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Abstract

The invention discloses trace coating food packaging paper and a manufacturing method thereof, and belongs to the technical field of food paper processing. The manufacturing method includes the stepsthat short fiber wood pulp, long fiber wood pulp, auxiliaries and filler are mixed and stirred to be uniform to obtain mixed wood pulp, and wet paper sheets of the mixed wood pulp are subjected to papermaking and preliminary drying; the dried paper is subjected to coating operation, secondary drying is conducted after coating is completed, and trace coating food packaging paper is obtained; the preparation method of the coating liquid comprises the following steps: dissolving chitosan in an acetic acid solution, adding a cross-linking agent, heating to 50-60 DEG C, and reacting for 30-50 minutes. The food packaging paper prepared by the method can solve the problems of poor oil resistance, barrier property and mechanical property of a paper-based food packaging material, enhances the antibacterial ability, prolongs the shelf life of food, avoids traditional waxing and film spraying, ensures food safety and health, remarkably improves the filler retention rate through surface coating, and does not generate the phenomena of hair falling and powder falling.

Description

technical field [0001] The invention belongs to the technical field of food paper processing, and in particular relates to a micro-coated food packaging paper and a production method thereof. Background technique [0002] With the development of the food industry, there are more and more types of food packaging paper, the more common ones are cake paper, sugar [0003] Fruit paper, noodle cartons, bread paper, biscuit cartons, ice cream packaging paper. It has to fulfill many different and partly contradictory needs: firstly, protection of the food from the environment, i.e. a certain mechanical strength and chemical stability against typical environmental influences; secondly, protection of the environment from the packaging with which it may come into contact. The influence of food, for food, requires sufficient resistance to the penetration of grease, oil and water through the wrapping paper, has a defined resistance to the penetration of water vapor, prevents the food f...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21F11/00D21F5/00D21H23/56D21H25/06
CPCD21H27/10D21F11/00D21F5/00D21H23/56D21H25/06
Inventor 袁宪澄
Owner 济南灏源纸业有限公司
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