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A kind of pulping process of high wet strength napkin

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

Active Publication Date: 2021-08-13
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 present invention relates to the technical field of household paper, in particular to a pulping process of high wet strength napkins, the process steps include long fiber pulping and short fiber pulping, long fiber refining and short fiber refining and pulping processes, In the pulping section, separate pulping of long and short fibers is used to improve fiber strength, and the concentration of long fiber pulp is controlled to 4.5-6%, and the concentration of short fiber pulp is 5-6%. This process adds certain amount of beating enzyme and liquid caustic soda; the conical refiner is used in the refining section to control the refining flow rate, refining power and beating concentration of long and short fibers respectively. The fiber beating concentration is 32-35°SR, and the resin control agent is added in the pipeline before the long and short fiber pulp enters the discharge pump; the present invention finally makes the prepared napkin It has high wet strength, excellent quality, and improves the operating efficiency of the paper machine, and the production operation is stable.

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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Patent Type & Authority Patents(China)
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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