Method for producing copy paper from waste stainless steel lining paper

A stainless steel, copy paper technology, applied in pulp beating method, pulp beating/refining method, special paper, etc., can solve the problems of high production cost of copy paper, high power consumption for beating, and improve paper evenness and gloss. , The effect of improving fiber uniformity and reducing power consumption of beating

Inactive Publication Date: 2019-03-01
福建省晋江优兰发纸业有限公司
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AI-Extracted Technical Summary

Problems solved by technology

[0005] Therefore, in view of the above content, the present invention provides a method for producing copy paper using waste stain...
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Method used

A kind of method that adopts waste stainless steel backing paper to produce copy paper, concrete production process: a, coniferous wood pulp are processed through hydropulper, pulp pool, disc refiner, pulp pool; b, waste stainless steel backing paper are processed through artificial Sorting, sorting, crushing, dispersing and descaling, screening, desanding pretreatment, and then treated by hydraulic pulper, pulp tank, deflaker, pressure screen, desander, pulp tank, disc refiner, pulp tank; c The coniferous wood pulp and waste stainless steel backing paper pulp processed in step a and step b are sent to the blending tank together for processing, adding brighteners, purple and blue dyes in the blending tank, and then entering the forebay tank for processing, and then Enter the pulping box for pulping, add accelerator in the pulping box, then enter the flushing tank, add defoamer in the pulping tank, and then enter the headbox, mesh cloth, pressing section, drying cylinder section, coiling part, slitting, packaging, and warehousing, among which, a cylinder stripping agent is added to the dryer part. The waste stainless steel liner pulp is beaten slowly with a light k...
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Abstract

The invention relates to the field of papermaking, provides a method for producing copy paper from waste stainless steel lining paper, and solves the problems of high production cost and high pulpingpower consumption of the copy paper in the prior art. The specific preparation method comprises the following steps: a, treating softwood pulp by a hydrapulper I, a pulp tank I, a disc mill I and a pulp tank II; b, treating waste stainless steel lining paper by a hydrapulper II, a pulp tank III, a fluffer, a pressure screen, a desander, a pulp tank IV, a disc mill II and a pulp tank V; c, sendingthe softwood pulp and the waste stainless steel lining paper which are treated in steps a and b into a pulp mixing tank together for treatment, adding a brightener and purple and blue dye to the pulpmixing tank, treating the mixture in a pre-making tank, then mixing the pulp in a pulp mixing tank, adding an accelerant to the pulp mixing tank, feeding the mixture to a pulp flushing tank, adding adefoaming agent to the pulp flushing tank, then performing treatment in a head box, mesh cloth, a pressing part, a dryer part and a coiling part, and performing slitting, packaging and warehousing treatment. A dryer stripping agent is added to the dryer part.

Application Domain

Flexible coversDefoamers addition +7

Technology Topic

PapermakingBlue dye +5

Image

  • Method for producing copy paper from waste stainless steel lining paper

Examples

  • Experimental program(3)

Example Embodiment

[0021] Example 1
[0022] A method for producing copy paper by using waste stainless steel lining paper. The specific production process is as follows: a. Softwood pulp is processed by a hydraulic pulper, a pulp tank, a disc refiner and a pulp pond; b. The waste stainless steel lining paper is manually sorted and sorted , disintegrating, dispersing and dispersing, screening, and desanding pretreatment, and then processed by hydraulic pulper, slurry tank, decomposing machine, pressure screen, desander, slurry tank, disc refiner, and slurry tank; c. Step a Together with the softwood pulp and waste stainless steel lining pulp treated in step b, it is sent to the pulp tank for treatment, and whitening agent, purple and blue dyes are added to the pulp tank, and then sent to the fore-washing tank for processing, and then into the pulp mixing tank. In the pulping box, add accelerator in the pulping box, then enter the pulping tank, add defoamer in the pulping tank, and then enter the head box, mesh cloth, pressing section, drying cylinder section, coiling section, distribution Cutting, packing, and warehousing processing, wherein, a cylinder stripping agent is added to the dryer section. The method of loosening the waste stainless steel lining pulp with a light knife and slow beating makes the fibers split and reducing the cutting; the soft wood pulp is beaten with a heavy knife and fast to improve the uniformity of the fibers; (1) Raw material ratio: waste stainless steel lining Paper: softwood pulp by weight = 6:4; (2) Requirements for beating process parameters: softwood pulp: beating concentration 4.5%, beating beating degree 90°SR, wet weight 5.0g; waste stainless steel lining pulp: beating concentration 5.0 %, beating beating degree 50°SR, wet weight 4.0g; (3) papermaking process: production variety: 15g/m 2 Copy paper, paper machine model: 2640mm Fourdrinier wire multi-cylinder thin paper machine, speed: 230m/min, online concentration: 0.25%; (4) Filler and chemical dosage: fluorescent whitening agent: 5.0kg/ton paper; purple , blue dye: 0.01kg/ton; accelerator: 0.3kg/ton paper; defoaming agent: 0.8kg/ton paper; peeling agent: 0.2kg/ton paper.

Example Embodiment

[0023] Embodiment 2
[0024] A method for producing copy paper by using waste stainless steel lining paper. The specific production process is as follows: a. Softwood pulp is processed by a hydraulic pulper, a pulp tank, a disc refiner and a pulp pond; b. The waste stainless steel lining paper is manually sorted and sorted , disintegrating, dispersing and dispersing, screening, and desanding pretreatment, and then processed by hydraulic pulper, slurry tank, decomposing machine, pressure screen, desander, slurry tank, disc refiner, and slurry tank; c. Step a Together with the softwood pulp and waste stainless steel lining pulp treated in step b, it is sent to the pulp tank for treatment, and whitening agent, purple and blue dyes are added to the pulp tank, and then sent to the fore-washing tank for processing, and then into the pulp mixing tank. In the pulping box, add accelerator in the pulping box, then enter the pulping tank, add defoamer in the pulping tank, and then enter the head box, mesh cloth, pressing section, drying cylinder section, coiling section, distribution Cutting, packing, and warehousing processing, wherein, a cylinder stripping agent is added to the dryer section. The waste stainless steel lining pulp is loosened with a light knife and slowly beaten, so that the fibers are divided into filaments to reduce cutting; the soft knife pulp is beaten with a heavy knife and fast to improve the uniformity of the fibers. Among them (1) raw materials: waste stainless steel lining paper: softwood pulp by weight = 7:3; (2) requirements for beating process parameters: softwood pulp: beating concentration 4.8%, beating beating degree 92°SR, wet weight 5.5 g; waste stainless steel lining pulp: beating concentration 5.3%, beating beating degree 53°SR, wet weight 4.5g; (3) papermaking process: production variety: 16g/m 2 Copy paper, paper machine model: 2640mm Fourdrinier wire multi-cylinder thin paper machine, speed: 240m/min, online concentration: 0.30%; (4) Filler and chemical dosage: fluorescent whitening agent: 7.0kg/ton paper; purple , blue dye: 0.5kg/ton; accelerator: 0.4kg/ton paper; defoaming agent: 0.9kg/ton paper; peeling agent: 0.25kg/ton paper.

Example Embodiment

[0025] Embodiment 3
[0026] A method for producing copy paper by using waste stainless steel lining paper. The specific production process is as follows: a. Softwood pulp is processed by a hydraulic pulper, a pulp tank, a disc refiner and a pulp pond; b. The waste stainless steel lining paper is manually sorted and sorted , disintegrating, dispersing and dispersing, screening, and desanding pretreatment, and then processed by hydraulic pulper, slurry tank, decomposing machine, pressure screen, desander, slurry tank, disc refiner, and slurry tank; c. Step a Together with the softwood pulp and waste stainless steel lining pulp treated in step b, it is sent to the pulp tank for treatment, and whitening agent, purple and blue dyes are added to the pulp tank, and then sent to the fore-washing tank for processing, and then into the pulp mixing tank. In the pulping box, add accelerator in the pulping box, then enter the pulping tank, add defoamer in the pulping tank, and then enter the head box, mesh cloth, pressing section, drying cylinder section, coiling section, distribution Cutting, packing, and warehousing processing, wherein, a cylinder stripping agent is added to the dryer section. The waste stainless steel lining pulp is loosened with a light knife and slowly beaten, so that the fibers are divided into filaments to reduce cutting; the soft knife pulp is beaten with a heavy knife and fast to improve the uniformity of the fibers. Among them (1) raw material ratio: waste stainless steel lining paper: softwood pulp by weight = 6:4; (2) beating process parameter requirements: softwood pulp: beating concentration 5%, beating beating degree 93°SR, wet weight 6.0g; waste stainless steel lining pulp: beating concentration 5.5%, beating beating degree 55°SR, wet weight above 3.8g; (3) Papermaking process: production variety: 17g/m 2 Copy paper, paper machine model: 2640mm Fourdrinier wire multi-cylinder thin paper machine, speed: 250m/min, Internet concentration: 0.35%; (4) Filler and chemical dosage: fluorescent whitening agent: 10.0kg/ton paper; purple , blue dye: 3kg/ton; accelerator: 0.5kg/ton paper; defoaming agent: 1.0kg/ton paper; peeling agent: 0.3kg/ton paper.
[0027] The specific production process of the present invention is shown in figure 1.
[0028] The invention adopts waste stainless steel lining paper to produce copy paper, which not only greatly reduces the production cost, but also reduces the power consumption for beating. It also makes full use of waste paper renewable resources, reduces deforestation and protects the environment.

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Classification and recommendation of technical efficacy words

  • protect environment
  • reduce manufacturing cost
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