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Method for producing recycled paper from wax-containing waste paper

A technology of waste paper and heavy wax paper, applied in paper recycling, inorganic compound addition, raw material separation, etc., can solve environmental pollution and other problems, achieve the effects of reducing environmental pollution, improving the performance of wax recovery, and reducing the cost of papermaking

Inactive Publication Date: 2017-01-11
谭凌晖
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: overcome the defects existing in the existing waxy waste paper recycling papermaking, and provide a method for waxy waste paper recycling papermaking, through the recycling of waxy waste paper, to achieve resource reuse and solve the problem of waxy waste paper Environmental pollution problems caused by friction cleaning and pulp washing two-stage cleaning process to remove waste paper impurities, variegated colors and dirt, so that the recycled new paper is clean and pollution-free

Method used

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Experimental program
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Embodiment 1

[0023] A method for making paper from waxy waste paper, comprising the following steps:

[0024] 1) Ingredients: According to the wax content, the waste paper is divided into heavy wax paper and light wax paper, and then it is proportioned so that the average wax content of the total raw materials is 17-22%. Wax weight percentage) is: heavy wax paper wax content ≥ 45%, light wax paper wax content < 45%;

[0025] 2) Pulverization: pulverize the matched raw materials with a crusher;

[0026] 3) Friction cleaning: transfer the shredded paper crushed in step 2) into a friction cleaning machine for cleaning, the cleaning time is 25-40 minutes, and the cleaning temperature is 35-60°C;

[0027] 4) Beating: Add 0.1-0.3% nano-titanium dioxide to the crushed paper, then beat it with a beater, and heat it until the paraffin is melted at the same time, beat the shredded paper into a pulp with a buckle degree of 20-25 degrees, and the mass concentration of the pulp is 5~6%:

[0028] 5) ...

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Abstract

The invention discloses a method for producing recycled paper from wax-containing waste paper, and belongs to the waste paper recovery and processing technology field. <{EN2}>The method comprises the steps of 1) preparing ingredients, namely blending a raw material whose average paraffin content is between 17-22%; 2) crushing; 3) friction cleaning; 4) slurry beating, and adding 0.1-0.3% nanometer titanium dioxide in the beating process; 5) slurry squeezing; 6) slurry washing; 7) slurry polishing, and adding 1-4% wax virgin material in the slurry polishing process; and 8) screening to remove slag. <{EN3}>According to the method, dirt adhered to the waste paper can be removed thoroughly by secondary cleaning, making the surface of the new wax paper clean and having no impurities or different color.

Description

technical field [0001] The invention belongs to the technical field of waste paper recycling and processing, and in particular relates to a papermaking method for waxy waste paper recycling. Background technique [0002] Waxed paper refers to processed paper coated with wax on the surface, which has extremely high moisture resistance, water resistance and oil penetration resistance, such as moisture-proof kraft paper, moisture-proof corrugated paper, wax-impregnated high-strength corrugated paper, moisture-proof cardboard, super calendered paper, fruit bagging Paper, moisture-proof bobbin paper, and cement packaging are often used to package various foods. They are favored by food manufacturers for their advantages of non-toxicity, no peculiar smell, and small deformation when exposed to heat. However, waxy paper is made by waxing after printing on base paper, and may be sizing or adding fillers, which makes it difficult for waxy waste paper to decompose naturally, causing v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/32D21H11/14D21H17/67
CPCY02W30/64
Inventor 谭凌晖
Owner 谭凌晖
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