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Production process for paper

A production process and paper technology, applied in the field of paper manufacturing, can solve the problems of resource waste, low utilization rate of waste paper, insufficient whiteness, etc., and achieve the effects of reducing waste paper waste, improving recycling rate, and maintaining smoothness

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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the continuous improvement of people's use of paper, the amount of waste paper produced is also continuously increasing. If the waste paper cannot be utilized reasonably, it will cause waste paper and waste of resources; the existing papermaking process is also It will make reasonable use of waste paper and re-produce waste paper; however, the existing waste paper recycling process has technical defects, and its utilization rate of waste paper is low, which will still cause some waste paper resources to be wasted; and the existing The whiteness of the paper produced by the advanced production process is not enough, and the color of the paper is dark, which will affect the writing on the paper

Method used

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  • Production process for paper
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Examples

Experimental program
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Embodiment 1

[0042] A paper production process, comprising the steps of:

[0043] S1. Classify the waste paper, put the classified paper into the beater, and inject water into the beater, and then perform beating for 35 minutes, so that the paper is dissolved into a slurry;

[0044] S2, pumping the slurry in step S1 to the inclined screen for slurry filtration;

[0045] S3, separating fibers from the slurry filtered in step S2 through a fiber separator to obtain pulp fibers;

[0046] S4. Add wood fiber to step S3, and stir and mix wood fiber and pulp fiber, and the percentage of wood fiber and pulp fiber is 1:3;

[0047] S5. Add talcum powder and calcium carbonate to the stirred slurry, and stir until uniform. The stirring time is 20 minutes, and the particle size of the talcum powder is 1800 mesh;

[0048] S6, add barium sulfate and rosin in step S2, and stir 5min;

[0049] S7. Pump the slurry in step S3 to the slurry distribution equipment, spray the slurry onto the forming net throug...

Embodiment 2

[0057] A paper production process, comprising the steps of:

[0058] S1. Classify the waste paper, put the classified paper into the beater, and inject water into the beater, and then perform beating for 50 minutes, so that the paper is dissolved into a slurry;

[0059] S2, pumping the slurry in step S1 to the inclined screen for slurry filtration;

[0060] S3, separating fibers from the slurry filtered in step S2 through a fiber separator to obtain pulp fibers;

[0061] S4. Add wood fiber to step S3, and stir and mix wood fiber and pulp fiber, and the percentage of wood fiber and pulp fiber is 1:5;

[0062] S5. Add talcum powder and calcium carbonate to the stirred slurry, and stir until uniform. The stirring time is 32 minutes, and the particle size of the talcum powder is 2300 mesh;

[0063] S6, add barium sulfate and rosin in step S2, and stir 10min;

[0064] S7. Pump the slurry in step S3 to the slurry distribution equipment, spray the slurry onto the forming net throu...

Embodiment 3

[0072] A paper production process, comprising the steps of:

[0073] S1. Sorting the waste paper, putting the sorted paper into the beater, and injecting water into the beater, and then beating for 65 minutes, so that the paper is dissolved into a slurry;

[0074] S2, pumping the slurry in step S1 to the inclined screen for slurry filtration;

[0075] S3, separating fibers from the slurry filtered in step S2 through a fiber separator to obtain pulp fibers;

[0076] S4. Add wood fiber to step S3, and stir and mix wood fiber and pulp fiber, and the percentage of wood fiber and pulp fiber is 1:6;

[0077] S5. Add talcum powder and calcium carbonate to the stirred slurry, and stir until uniform. The stirring time is 44 minutes, and the particle size of the talcum powder is 2600 mesh;

[0078] S6, add barium sulfate and rosin in step S2, and stir 15min;

[0079] S7. Pump the slurry in step S3 to the slurry distribution equipment, spray the slurry onto the forming net through the...

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Abstract

The invention discloses a production process for paper. The process comprises the following steps: step 1, classifying waste paper, putting the classified paper into a beating machine, and pouring water into the beating machine to dissolve the paper to form pulp; step 2; pumping the pulp in the step 1 to an inclined wire, and performing pulp filtration treatment; step 3, separating fibers from thepulp filtered in the step 2 by using a fiber separation machine to obtain paper pulp fibers; and step 4, adding wood fibers into the paper pulp fibers obtained in the step 3, and mixing the wood fibers and the paper pulp fibers under stirring, wherein a ratio of the wood fibers to the paper pulp fibers is 1:(3-6). According to the process provided by the invention, the waste paper is classified,different processing manners can be adopted according to different waste paper, so that the wood fibers in the waste paper can be decomposed to the greatest extent, the recycling rate of the waste paper is improved, and waste of the waste paper is reduced; and the wood fibers are added into the paper pulp, so that a sufficient thickness of the produced paper is ensured.

Description

technical field [0001] The invention belongs to the technical field of paper manufacturing, and in particular relates to a paper production process. Background technique [0002] Paper has always occupied a large proportion in people's lives. It is not only used for writing, but also used for packaging and other places. With the continuous improvement of the demand for paper, the quality requirements for paper are also rising. High-quality paper not only requires the color of the paper to be good, but also requires the water resistance of the paper and the stiffness of the paper to be improved. [0003] With the continuous improvement of people's use of paper, the amount of waste paper produced is also continuously increasing. If the waste paper cannot be utilized reasonably, it will cause waste paper and waste of resources; the existing papermaking process is also It will make reasonable use of waste paper and re-produce waste paper; however, the existing waste paper recyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/32D21B1/34D21D5/02D21H17/62D21H17/66D21H17/67D21H19/84
CPCD21B1/32D21B1/345D21D5/02D21H17/62D21H17/66D21H17/675D21H19/84Y02W30/64
Inventor 胡鑫