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Tear-resistant high-strength food packaging paper preparation method

A food wrapping paper, high-strength technology, applied in the directions of wrapping paper, wrapping paper, packaging, etc., can solve the problems of poor mechanical strength, poor antibacterial and bacteriostatic effect, and easy to be torn, so as to enhance the antibacterial and bacteriostatic effect. , Improve the mechanical strength and structural degree, the effect of roughness enhancement

Inactive Publication Date: 2019-09-03
宁波五翊新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a preparation method of tear-resistant high-strength food packaging paper in view of the defects of poor mechanical strength of the current food packaging paper, which lead to easy tearing and poor antibacterial and antibacterial effects

Method used

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  • Tear-resistant high-strength food packaging paper preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of homemade binder:

[0032] Put alkaline reaction solution and hydrochloric acid with a mass fraction of 8% into a beaker at a mass ratio of 1:5, stir with a stirrer at a speed of 120r / min for 30min to prepare a mixed solution, and add 15% of the mixed solution dropwise to the beaker A citric acid solution with a mass fraction of 6%, placed the beaker in an ultrasonic oscillator, and vibrated for 2 hours at a frequency of 32 kHz to prepare a modified mixed solution;

[0033] Add aluminum chloride powder with 2% mass of the modified mixed solution to the above beaker, stir with a stirring device at a speed of 300r / min for 30min, and add dropwise a sodium hydroxide solution with a mass fraction of 6% to the beaker to adjust the pH value to 6.6 , place the beaker in a water bath with a water bath temperature of 60°C, stir with a stirrer at a speed of 260r / min for 60min, and filter to obtain a filter residue after stirring to obtain a reaction product;

[0034...

Embodiment 2

[0041] Preparation of homemade binder:

[0042] Put alkaline reaction solution and hydrochloric acid with a mass fraction of 9% into a beaker at a mass ratio of 1:5, stir with a stirrer at a speed of 130r / min for 35min to obtain a mixed solution, and add 17% of the mixed solution dropwise to the beaker A citric acid solution with a mass fraction of 8%, placed the beaker in an ultrasonic oscillator, and vibrated for 2 hours at a frequency of 34 kHz to prepare a modified mixed solution;

[0043] Add aluminum chloride powder with 3% mass of the modified mixed solution to the above beaker, stir with a stirring device at a speed of 320r / min for 35min, add dropwise a sodium hydroxide solution with a mass fraction of 8% in the beaker to adjust the pH value to 6.8 , place the beaker in a water bath with a water bath temperature of 70°C, stir with a stirrer at a speed of 280r / min for 70min, and filter to obtain a filter residue after stirring to obtain a reaction product;

[0044] Put...

Embodiment 3

[0051] Preparation of homemade binder:

[0052] Put the alkaline reaction solution and hydrochloric acid with a mass fraction of 10% into a beaker at a mass ratio of 1:5, stir with a stirrer at a speed of 140r / min for 40 minutes to prepare a mixed solution, and add 20% of the mixed solution dropwise to the beaker A citric acid solution with a mass fraction of 10%, placed the beaker in an ultrasonic oscillator, and vibrated for 3 hours at a frequency of 36 kHz to prepare a modified mixed solution;

[0053] Add aluminum chloride powder with 4% mass of the modified mixed solution to the above beaker, stir with a stirring device at a speed of 350r / min for 40min, and add dropwise a sodium hydroxide solution with a mass fraction of 10% in the beaker to adjust the pH value to 7.0 , place the beaker in a water bath with a water bath temperature of 80°C, stir with a stirrer at a speed of 300r / min for 80min, and filter after stirring to obtain a filter residue to obtain a reaction produ...

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Abstract

The invention relates to a tear-resistant high-strength food packaging paper preparation method, and belongs to the technical field of food packaging. The preparation method comprises: carrying out mixing grinding on wood chips and silica, pouring the grinded materials into a sodium hydroxide solution, and carrying out a reaction to prepare a reaction slurry; adding cotton fiber, and carrying outhigh temperature stirring to obtain an alkaline reaction liquid; adding hydrochloric acid to the alkaline reaction liquid, adding citric acid in a dropwise manner, and vibrating to prepare a modifiedmixing liquid; adding aluminum chloride to the modified mixing liquid, adjusting the pH value, and carrying out a high temperature reaction; filtering to prepare a reaction product after the reaction,and carrying out high temperature treatment on the reaction product to prepare a hot reaction product; pouring the hot reaction product into an ethylene glycol solution, and carrying out stirring mixing; adding chitosan powder, carrying out mixing stirring, and filtering to obtain a self-made adhesive after the stirring; and mixing the self-made adhesive and paper pulp, and sequentially carryingout papermaking, hot pressing and drying to obtain the tear-resistant high-strength food packaging paper. According to the present invention, the cross-linking degree among various components is enhanced by using the fiber material, and the silica is combined, such that the obtained product has good application prospect.

Description

technical field [0001] The invention relates to a preparation method of tear-resistant high-strength food packaging paper, which belongs to the technical field of food packaging. Background technique [0002] With the improvement of social living standards and economic levels, there are more and more types of food packaging materials. Among them, as an important part of food packaging materials, food packaging paper occupies an important position in the entire food packaging industry, but how to develop packaging paper technology, how to improve the quality of food packaging paper and reduce the cost of food packaging paper is the key to the production and processing of food packaging Important considerations for paper. [0003] Traditional food packaging paper uses plastic as packaging material, which has rich sources of raw materials, low cost, and excellent performance. However, plastic packaging materials are extremely difficult to degrade and difficult to handle. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H17/65D21H17/14D21H17/67D21H17/64D21H17/06D21H17/24D21H17/68D21H17/23D21H11/12D21H21/18D21H21/36D21H11/00
CPCD21H11/00D21H11/12D21H17/06D21H17/14D21H17/23D21H17/24D21H17/64D21H17/65D21H17/675D21H17/68D21H17/74D21H21/18D21H21/36D21H27/10
Inventor 王楠
Owner 宁波五翊新材料科技有限公司