Environment-friendly high-barrier packaging paper and preparation method thereof

A high-barrier, wrapping paper technology, applied in the directions of wrapping paper, wrapping paper, packaging, etc., can solve the problems of non-degradation and poor bacteriostatic performance, and achieve the effects of easy degradation, improved hydrophobicity, and improved barrier performance.

Pending Publication Date: 2019-09-27
ANHUI SHUNTONG PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the packaging paper still has defects such as not easy to degrade, poor antibacterial performance, etc.

Method used

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  • Environment-friendly high-barrier packaging paper and preparation method thereof
  • Environment-friendly high-barrier packaging paper and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] The preparation method of this wrapping paper comprises the steps:

[0045] Coating: Coating the coating liquid evenly on the surface of the base paper, using single-sided coating, the coating amount is 6g / m 2 ;

[0046] Drying: Put the coated coated paper into a drying oven at 68°C immediately for drying, and take it out after 160-170s;

[0047] Constant temperature and humidity treatment: place the dried coated paper in a constant temperature and humidity box for rehumidification treatment. The treatment conditions are set as follows: the temperature is 23-24 °C, the relative humidity is 50%, and the time is 46-48 hours. wrapping paper.

Embodiment 1

[0049] The base paper is prepared by the following method:

[0050] (1) Soak the mucormycetes in 0.4mol / L NaOH solution for 15 days, during which the lye is replaced 3 times until the mycelium becomes milky white, and the immersion can be ended when the lye no longer changes color, and the mucormycete fiber is obtained;

[0051] (2) Wash the soaked mucormycetes fiber with deionized water to neutrality, and use a high-speed dispersion homogenizer to homogenize for 30 minutes at 20000r / min to obtain a milky mycelium liquid;

[0052] (3) Tear the bleached coniferous wood pulp board into small pieces and soak it in water for 4-5 hours, then disintegrate, beat, and dehydrate (wherein, the degree of beating is 17.5°SR), and mix the milky mycelium liquid with the dehydrated softwood pulp Mixed flakes (the mass ratio of milky mycelium liquid to dehydrated softwood pulp is 1:4.3), quantitative 60g / m 2 , wet paper sheets at 2.8 x 10 4 Squeeze for 5 minutes under Pa pressure, and dry e...

Embodiment 2

[0054] The base paper is prepared by the following method:

[0055] (1) Soak mucormycetes in 0.4mol / L NaOH solution for 18 days, during which the lye is replaced 4 times until the mycelium becomes milky white, and the immersion can be ended when the lye no longer changes color, and the mucormycete fiber is obtained;

[0056] (2) Wash the soaked mucormycetes fiber with deionized water to neutrality, and use a high-speed dispersion homogenizer to homogenize for 40 minutes at 20000r / min to obtain a milky mycelium liquid;

[0057] (3) Tear the bleached coniferous wood pulp board into small pieces and soak it in water for 5 hours, then perform thawing, beating, and dehydration (wherein, the beating degree is 17.5°SR), and mix the milky mycelium liquid with the dehydrated coniferous wood pulp. Sheets (the mass ratio of milky mycelium liquid to dehydrated softwood pulp is 1:4.5), quantitative 60-66g / m 2 , wet paper sheets at 2.8 x 10 4 Squeeze for 5 minutes under Pa pressure, and d...

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Abstract

The invention discloses environment-friendly high-barrier packaging paper and a preparation method thereof. The packaging paper comprises a base paper body and a coating applied on the surface of the base paper body; coating liquid is uniformly applied on the surface of the base paper body and single-sided coating is adopted; after coating is completed, the coated paper is immediately put into a drying box for drying; finally, the dried coated paper is placed in a constant-temperature and constant-humidity box for rewetting treatment, and the packaging paper is obtained. The base paper body prepared by mixing plant fiber and mucor fiber not only has high physical strength and good hydrophobic performance, but also is free of toxics, environmentally friendly and easy to degrade. By coating the surface of the base paper body with the coating liquid, the coating liquid fills paper fiber gaps, a dense film is formed on the surface of the paper, and the physical strength and barrier performance of the packaging paper are improved. An antibacterial agent in the coating liquid can make the packaging paper endowed with good antibacterial performance, and the packaging paper which is easy to degrade, free of toxics, environmentally friendly, good in antibacterial performance and high in barrier performance is prepared.

Description

technical field [0001] The invention belongs to the technical field of wrapping paper, and in particular relates to an environment-friendly high-barrier wrapping paper and a preparation method thereof. Background technique [0002] High-barrier packaging materials are widely used in the field of food packaging, such as milk, soybean milk, fruit juice, tea drinks and other liquid food and beverages, instant noodles, instant rice noodles and other convenience foods, melon seeds, peanuts, popcorn and other snacks. The packaging of these foods needs to have Packaging material with high barrier properties. High-barrier packaging materials have the function of reducing or preventing moisture, oil, water vapor, oxygen and other substances from penetrating into the packaging, and can effectively block the impact of external environmental factors on the quality of internal food, thereby ensuring that the food maintains good quality and taste during the shelf life . [0003] Common ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H11/02D21H21/36D21H21/16D21F13/00D21H19/14D21H19/34D21H13/10
CPCD21H27/10D21H11/02D21H21/36D21H21/16D21F13/00D21H19/14D21H19/34D21H13/10
Inventor 李东霖张先进桂茂生
Owner ANHUI SHUNTONG PACKAGING MATERIAL
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