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Method for producing thermosensitive base paper by fourdrinier vat machine

A large cylinder and paper machine technology, which is applied in the field of heat-sensitive raw paper produced by fourdrinier large-cylinder paper machines, can solve the problems of affecting the printing effect of heat-sensitive paper, reducing the binding force of paper fibers, and affecting the uniformity of coating, so as to reduce Problems of lint and powder falling and coating sticking to rollers, improving the smoothness and gloss of the front surface, and improving the effect of surface strength

Active Publication Date: 2021-06-11
SHANDONG RENFENG SPECIAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the paper is dried in a large vat, the high-temperature rapid drying reduces the initial bonding force of the paper fibers, resulting in low surface strength. When the heat-sensitive base paper is coated by downstream customers, it is easy to stick paper powder to the coating back roller, which affects The uniformity of coating will eventually affect the printing effect of thermal paper, and in severe cases, the coating machine will be shut down for cleaning

Method used

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  • Method for producing thermosensitive base paper by fourdrinier vat machine

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Experimental program
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Effect test

Embodiment 1

[0050] The production process of the fourdrinier large cylinder paper machine for producing heat-sensitive base paper is as follows: pulp plate → chain plate conveyance → pulper → unloading tank → refiner → pulp forming tank → fore-making tank → pulping Pump→pressure screen→headbox→wire section→press section→big vat→glue sizing machine→group vat→calender→coiling part→rewinding→packing and storage;

[0051] in:

[0052] (1) Ratio of pulp board: 20% of bleached kraft softwood pulp, 80% of bleached kraft hardwood pulp;

[0053] (2) Refining process: After the pulp plates are mixed evenly, three DD720 double disc mills are used for pulping in series. Temperature 35°SR, wet weight 3.0g;

[0054] (3) Add filler and slurry to mix and refine pulp at the pulper, and the addition is 300 liters / ton of pulp;

[0055] (4) Add cationic starch in the pipeline between the slurry forming tank and the pre-processing tank;

[0056] (5) Add wet strength agent and AKD at the inlet of the slurr...

Embodiment 2

[0085] The production process of the fourdrinier large cylinder paper machine for producing heat-sensitive base paper is as follows: pulp plate → chain plate conveyance → pulper → unloading tank → refiner → pulp forming tank → fore-making tank → pulping Pump→pressure screen→headbox→wire section→press section→big vat→glue sizing machine→group vat→calender→coiling part→rewinding→packing and storage;

[0086] in:

[0087] (1) Ratio of pulp board: 30% of bleached kraft softwood pulp, 70% of bleached kraft hardwood pulp;

[0088] (2) Refining process: After the pulp plates are mixed evenly, three DD720 double disc mills are used for pulping in series. Temperature 38°SR, wet weight 2.0g;

[0089] (3) Add filler and slurry to mix and refine pulp at the pulper, and the addition is 300 liters / ton of pulp;

[0090] (4) Add cationic starch in the pipeline between the slurry forming tank and the pre-processing tank;

[0091] (5) Add wet strength agent and AKD at the inlet of the slurr...

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Abstract

The invention belongs to the technical field of papermaking, and particularly relates to a method for producing thermosensitive base paper by a fourdrinier vat machine. The method for producing the thermosensitive heat-sensitive base paper by the fourdrinier vat machine comprises the following production process flows: pulp board, chain plate conveying, pulper, discharging pool, pulping machine, pulp forming pool, pre-machine-making pool, pulp flushing pump, pressure screen, pulp flowing box, net part, squeezing part, vat, sizing machine, vat assembly, calender, coiling part, rewinding, and packaging warehousing. The vat is used for ironing the paper sheet, meanwhile, a novel film transfer sizing process is adopted, the surface strength of the back face of the paper sheet is improved, the front face and the back face of the paper sheet are further modified through the double-pressing-area soft calender, finally the high strength of the front face and the back face is obtained, the problems that powder is prone to falling off and coating roller sticking is likely to happen to thermal-sensitive paper produced through a vat paper machine are solved, and the normal coating requirement of a user is met.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a method for producing heat-sensitive base paper by a fourdrinier large-cylinder paper machine. Background technique [0002] At present, most of the heat-sensitive base paper produced in China adopts fourdrinier multi-cylinder paper machines, and the front side of the paper has low smoothness, dullness and poor printing effect. The heat-sensitive base paper produced by the large cylinder paper machine has a high smoothness on the front and clear printing, which is favored by customers. However, when the paper is dried in a large vat, the high-temperature rapid drying reduces the initial bonding force of the paper fibers, resulting in low surface strength. When the heat-sensitive base paper is coated by downstream customers, it is easy to stick paper powder to the coating back roller, which affects Coating uniformity will eventually affect the printing effect of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H21/20D21H17/17D21H17/29D21H21/16D21H19/10D21H17/28D21H17/36D21H17/43D21H21/06D21H17/57B41M5/382
CPCD21H27/00D21H21/20D21H17/17D21H17/29D21H21/16D21H19/10D21H17/28D21H17/36D21H17/43D21H21/06D21H17/57B41M5/382Y02W30/64
Inventor 王帅徐家东宋佃凤
Owner SHANDONG RENFENG SPECIAL MATERIALS
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