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Pulping process of high wetting strength napkin paper

A technology of napkin paper and pulping, which is applied in the fields of special paper, pulping with inorganic alkali, post-treatment of cellulose pulp, etc., which can solve the problems of large difference in water absorption of napkin paper, easy loss of paper scraps and wool, and beating and refining performance. To solve the problems of high energy consumption, achieve the effect of increasing the speed of the paper machine and the quality of the paper, improving the quality, and reducing the energy consumption of beating

Active Publication Date: 2019-07-12
广东理文卫生用纸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pulping technology directly affects the quality of napkins. At present, napkins mainly have problems such as large differences in water absorption and low strength, which cause paper scraps and paper hairs to fall easily during the use of paper products. If the difference in water absorption can be reduced, Improving paper wet strength will effectively improve paper quality; in addition, in the existing pulping process, the energy consumption of beating and refining is high, and the operating efficiency of the paper machine is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The pulping process of a kind of high wet strength napkin of the present embodiment comprises the following steps:

[0027] Step 1, pulping process

[0028] Step 1a) long-fiber pulping: the floating coniferous wood pulp board is sent into the long-fiber pulper for beating, the pulping concentration is controlled at 5%, and the beating enzyme of 0.04kg / t and the liquid caustic soda of 0.58kg / t are added respectively, Made into long fiber slurry, and then unloaded to the long fiber unloading pool;

[0029] Step 1b) short fiber pulping: the drifting hardwood pulp board is sent into the short fiber pulper for beating, the pulping concentration is controlled at 5.5%, and the beating enzyme of 0.03kg / t and the liquid caustic soda of 0.50kg / t are added respectively, Made into short fiber pulp, and then unloaded to the short fiber unloading pool.

[0030] Step 2, refining process

[0031] Step 2a) Long-fiber refining: the long-fiber pulp in the long-fiber unloading tank is f...

Embodiment 2

[0039] The pulping process of a kind of high wet strength napkin of the present embodiment comprises the following steps:

[0040] Step 1, pulping process

[0041] Step 1a) long-fiber pulping: the floating coniferous wood pulp board is sent into the long-fiber pulper for beating, the pulping concentration is controlled at 4.5%, and the beating enzyme of 0.03kg / t and the liquid caustic soda of 0.45kg / t are added respectively, Made into long fiber slurry, and then unloaded to the long fiber unloading pool;

[0042] Step 1b) short fiber pulping: the drifting hardwood pulp board is sent into the short fiber pulper for beating, the pulping concentration is controlled at 5%, and the beating enzyme of 0.02kg / t and the liquid alkali of 0.45kg / t are added respectively, And control the beating temperature to 56°C and pH to 8.5 to make short fiber slurry, and then unload it to the short fiber discharge tank.

[0043] Step 2, refining process

[0044]Step 2a) Long-fiber refining: the l...

Embodiment 3

[0052] The pulping process of a kind of high wet strength napkin of the present embodiment comprises the following steps:

[0053] Step 1, pulping process

[0054] Step 1a) long-fiber pulping: the floating coniferous wood pulp board is sent into a long-fiber pulper for beating, the pulping concentration is controlled at 6%, and the beating enzyme of 0.05kg / t and the liquid alkali of 0.65kg / t are added respectively, Made into long fiber slurry, and then unloaded to the long fiber unloading pool;

[0055] Step 1b) short fiber pulping: the drifting hardwood pulp board is sent into the short fiber pulper for beating, the pulping concentration is controlled at 6%, and the beating enzyme of 0.04kg / t and the liquid caustic soda of 0.65kg / t are added respectively, And control the beating temperature to 55°C and pH to 9.0 to make short fiber slurry, and then unload it to the short fiber unloading pool.

[0056] Step 2, refining process

[0057] Step 2a) Long-fiber refining: the long...

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Abstract

The invention relates to the technical field of living paper and particularly relates to a pulping process of high wetting strength napkin paper. The process comprises procedures of long fiber crushing, short fiber crushing, long fiber grinding, short fiber grinding, and slurry blending. Long fibers and short fibers are separately and respectively crushed in the crushing procedures, so that the fiber strength can be improved; in addition, the concentration of the crushed long fiber slurry is controlled as 4.5-6%, the concentration of the crushed short fiber slurry is controlled as 5-6%, and acertain amount of pulping enzymes and liquid caustic soda are used in the process; in the grinding procedures, a conical grinding machine is used, grinding flows, grinding power and pulping concentrations of the long fibers and the short fibers are respectively controlled, the pulping concentration of the long fibers is 28-32 degree SR, the pulping concentration of the short fibers is 32-35 degreeSR, and a resin control agent is put into a pipeline before the long and short fiber slurry is fed into an unloading pump. Due to process optimization and synergetic effects of the procedures, the finally prepared napkin paper has high wetting strength, is excellent in quality, high in paper machine operation efficiency and stable in production operation.

Description

technical field [0001] The invention relates to the technical field of household paper, in particular to a pulping process for napkins with high wet strength. Background technique [0002] With the continuous improvement of people's living standards, napkin products have become a must-have consumer product in daily life, and people have higher requirements for the quality of napkins. Pulping technology directly affects the quality of napkins. At present, napkins mainly have problems such as large differences in water absorption and low strength, which cause paper scraps and paper hairs to fall easily during the use of paper products. If the difference in water absorption can be reduced, Improving paper wet strength will effectively improve paper quality; in addition, in the existing pulping process, the energy consumption of beating and refining is high, and the operating efficiency of the paper machine is low. Contents of the invention [0003] The purpose of the present...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21C5/00D21H15/02D21H15/06D21H11/00D21C3/02D21D1/22D21C9/00D21H21/02D21H21/20D21H17/37D21H17/54D21H17/56D21H21/18D21H21/10
CPCD21C3/02D21C5/005D21C9/008D21D1/22D21H11/00D21H15/02D21H15/06D21H17/37D21H17/54D21H17/56D21H21/02D21H21/10D21H21/18D21H21/20D21H27/002
Inventor 李文俊
Owner 广东理文卫生用纸有限公司
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