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Preparation method of waterproof and antibacterial food packaging paper

A technology for food wrapping paper and preparation steps, which is applied in the field of preparation of waterproof and antibacterial food wrapping paper, which can solve the problems of poor antibacterial and antibacterial properties of wrapping paper, easy damage of food wrapping paper, poor mechanical properties, etc., and achieve enhanced mechanical properties. Effects of strength and mechanical properties, improvement of mechanical properties, and improvement of waterproof performance

Inactive Publication Date: 2020-04-28
梁十根
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention: Aiming at the poor waterproof performance and poor mechanical properties of the current food packaging paper, the food packaging paper is easy to be damaged after being damp, and it is not easy to fold, and at the same time, it provides a kind of Preparation method of waterproof and antibacterial food packaging paper

Method used

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  • Preparation method of waterproof and antibacterial food packaging paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of sulfide-containing fiber material:

[0036] Put pine sawdust and water into a beaker at a mass ratio of 1:10, place the beaker in a water bath with a water bath temperature of 40°C, let it stand at a constant temperature for 2 hours, put it into a beater for beating after standing, and put it into a vacuum after beating In a drying oven, concentrate at a temperature of 40°C and a vacuum of 100Pa until the quality of the product is constant to obtain a mixed dry pulp;

[0037] Put the above mixed dry slurry and water into a three-necked flask at a mass ratio of 1:15, stir with a stirring device at a speed of 350r / min for 30 minutes to obtain a dispersion, and add silver nitrate powder with a mass of 2% of the dispersion to the three-necked flask , continue to stir with a stirring device at a speed of 600r / min for 40min, after stirring, let it stand for 2h to obtain a modified mixed solution;

[0038] Add sodium sulfide powder of 2% mass of the modified mi...

Embodiment 2

[0046] Preparation of sulfide-containing fiber material:

[0047] Put pine sawdust and water into a beaker at a mass ratio of 1:10, place the beaker in a water bath with a water bath temperature of 45°C, let it stand at a constant temperature for 2.5 hours, put it into a beater for beating after standing, and put it into In a vacuum drying oven, concentrate at a temperature of 45°C and a vacuum of 150Pa until the quality of the product is constant to obtain a mixed dry pulp;

[0048] Put the above mixed dry slurry and water into a three-necked flask at a mass ratio of 1:15, stir with a stirring device at a speed of 370r / min for 35 minutes to obtain a dispersion, and add silver nitrate powder with a mass of 3% of the dispersion to the three-necked flask , continue to stir with a stirring device at a speed of 650r / min for 45min, and after stirring, let it stand for 2.5h to obtain a modified mixed solution;

[0049] Add sodium sulfide powder of 3% mass of the modified mixed solu...

Embodiment 3

[0057] Preparation of sulfide-containing fiber material:

[0058] Put pine sawdust and water into a beaker at a mass ratio of 1:10, place the beaker in a water bath with a water bath temperature of 50°C, let it stand at a constant temperature for 3 hours, put it into a beater for beating after standing, and put it into a vacuum after beating In a drying oven, concentrate at a temperature of 50°C and a vacuum of 200Pa until the quality of the product is constant to obtain a mixed dry pulp;

[0059] Put the above mixed dry slurry and water into a three-necked flask at a mass ratio of 1:15, stir with a stirring device at a speed of 400r / min for 40 minutes to obtain a dispersion, and add silver nitrate powder with a mass of 4% of the dispersion to the three-necked flask , continue to stir with a stirring device at a speed of 700r / min for 50min, and after stirring, let it stand for 3h to obtain a modified mixed solution;

[0060] Add sodium sulfide powder with 4% mass of the modif...

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Abstract

The invention discloses a preparation method of waterproof and antibacterial food packaging paper, and belongs to the technical field of food packaging equipment. The pine sawdust is subjected to pulping, crushing and high-temperature treatment, so that fiber components in the sawdust are separated; a contact area between fiber components and the outside is increased; more sufficient contact between hydroxyl groups in the fibers and other components is facilitated; the mechanical properties of wrapping paper is enhanced; hydroxyl groups on the surfaces of fiber components extracted from sawdust can chelate and adsorb silver ions, then sodium sulfide is added to form silver sulfide nano-scale particles to be adsorbed in the fiber components, and the silver sulfide nano-scale particles are dispersed on the surface of the packaging paper through the fiber components, so that the antibacterial performance of the packaging paper is enhanced. Chitosan and starch are bonded and adsorbed, a tetrabutyl titanate reaction component titanium dioxide is added to be bonded to the surfaces of chitosan and starch molecules, titanium dioxide is adsorbed and bonded to paper pulp fibers through chitosan and starch, the paper pulp fibers are filled and adsorbed in food packaging paper components, and chitosan has a good antibacterial effect.

Description

technical field [0001] The invention discloses a preparation method of waterproof and antibacterial food packaging paper, which belongs to the technical field of food packaging equipment. Background technique [0002] Food packaging paper refers to paper used for packaging food that is oil-resistant and meets food packaging safety requirements. During the process of contacting food with food, its components or ingredients (including various additives) may migrate into food in small amounts under the conditions of use. If some toxic and harmful ingredients are contained in these migrations, it will cause Human health hazard. [0003] Food wrapping paper is a paper packaging material for directly imported foods such as candies, popsicles, and pastries. Food packaging paper plays an irreplaceable role in protecting food, preventing food from being contaminated by external microorganisms or other substances, and preventing or reducing food oxidation and other reactions. Food ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/24D21H17/28D21H17/67D21H27/10D21F11/00D21D1/02
CPCD21D1/02D21F11/00D21H17/24D21H17/28D21H17/67D21H17/675D21H27/10
Inventor 梁十根
Owner 梁十根