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Preparation method of high air permeability and water absorption inning paper for sanitary products

A hygienic product and high-permeability technology, applied in pulp beating/refining methods, textiles and papermaking, pure paper, etc., can solve the problems of increasing energy consumption, reducing paper air permeability, sticking cylinders, etc. Pulp degree, the effect of reducing energy consumption

Inactive Publication Date: 2017-11-03
上海东冠纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proportion of long fibers in this patent is 100%, because the price of long fibers is higher than that of short fibers, so the cost is higher when the same requirements are met; in this patent, the mixed pulp must pass through a refiner, which will reduce the paper quality. Air permeability, and the use of a refiner will increase energy consumption; and the pulp with a ratio of 100% long fibers will stick to the cylinder during papermaking, that is, it is difficult to peel off the paper sheet on the drying cylinder, causing inconvenience in production , in severe cases, it will hinder the smooth progress of production and cause downtime

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation method of high air permeability and water absorption inning paper for sanitary products
  • Preparation method of high air permeability and water absorption inning paper for sanitary products
  • Preparation method of high air permeability and water absorption inning paper for sanitary products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of high air permeability absorbent lining paper for sanitary products, see the process flow chart figure 1 , The method includes the following steps:

[0027] (1) Put 7 packs of softwood pulp board (230 kg per pack air-dried) into the long-fiber pulper, a total of 1610 kg, the total volume after filling with water is about 20 cubic meters, the concentration is about 8wt%, and 10 Minutes later, it is diluted with concentrated water to a concentration of 6wt% and then pumped into the long-fiber tapping fore pulp tank.

[0028] (2) Put 7 packs of hardwood pulp into the short fiber pulper (each bag is air-dried and weigh 245 kg), a total of 1715 kg, add water to a concentration of about 8wt%, follow the same operation method of the long fiber pulper, and crush The decomposed short fiber slurry is pumped to the pulp pool before the short fiber knock;

[0029] (3) The slurry in the slurry tank before the long-fiber tapping is adjusted to 4.8wt% by thickening wa...

Embodiment 2

[0047] A method for preparing high air permeability absorbent liner paper for sanitary products, using softwood pulp as the long-fiber raw material and hardwood pulp as the short-fiber raw material. The method includes the following steps:

[0048] (1) Put the softwood pulp board into the long-fiber pulper, fill up with water to a concentration of about 8.5wt%, disintegrate for 20 minutes, dilute it with concentrated water to a concentration of 6.5wt%, and then pump into the long fiber before tapping Slurry pool.

[0049] (2) Put the broadleaf pulp into the short fiber pulper, add water to a concentration of about 8.5wt%, follow the same operation method of the long fiber pulper, and pump the broken short fiber pulp to the short fiber tap. Fore slurry tank

[0050] (3) The slurry in the slurry tank is adjusted to 5.3wt% by thickening water before tapping, and then enters the refiner. The speed of the refiner is 700rpm, the grinding tooth width is 4.0mm, and the grinding disc groove ...

Embodiment 3

[0057] A method for preparing high air permeability absorbent liner paper for sanitary products, using softwood pulp as the long-fiber raw material and hardwood pulp as the short-fiber raw material. The method includes the following steps:

[0058] (1) Put the softwood pulp board into the long-fiber pulper, fill up with water to a concentration of about 7.5wt%, disintegrate for 5 minutes, dilute it with concentrated water to a concentration of 5.5wt%, and then pump into the long fiber before tapping Slurry pool.

[0059] (2) Put the hardwood pulp into the short fiber pulper, add water to a concentration of about 7.5wt%, follow the same operation method of the long fiber pulper, and pump the broken short fiber pulp to the short fiber tap. Fore slurry tank

[0060] (3) The slurry in the slurry tank before the long fiber tap is adjusted to 4.5wt% by thickening water, and then enters the refiner. The speed of the refiner is 800rpm, the grinding tooth width is 5.0mm, and the grinding dis...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a method for preparing a high-air-permeability water-absorbing backing paper for sanitary products. Coniferous wood pulp is used as long-fiber raw material, hardwood pulp is used as short-fiber raw material, and they are beaten separately. Processing, mixing according to the long-fiber raw material accounting for 85wt%, the mixed pulp is not processed by a refiner, and after entering the pressure screen to remove slag, it enters the pulp tank, and then after being formed, pressed and dried by a paper machine, it is wrinkled. Get high air permeability absorbent backing paper for hygiene products. Compared with the prior art, the preparation process of the present invention does not add wet strength agent and carboxymethyl cellulose, and the prepared product has good air permeability, high strength, safety, sanitation and environmental protection.

Description

Technical field [0001] The invention relates to a preparation method of paper products, in particular to a preparation method of high air permeability water-absorbing liner paper for sanitary products. Background technique [0002] Nowadays, the disposable hygiene products industry is developing rapidly. The main advantages are convenience, comfort, non-reuse, safety and hygiene. These sanitary products include sanitary napkins, diapers, and diapers. Absorbent liner paper is the key material in disposable sanitary products. It is mainly used to wrap fluff pulp and polymer absorbent materials in sanitary napkins and other disposable sanitary products, so that fluff pulp and absorbent materials are not exposed. Choose absorbent liner paper. The main reason is that paper is made of interwoven fibers, its structure is loose and porous, and it has good air permeability and water absorption. The air permeability and water absorption are exactly what disposable sanitary products such a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/16D21H11/08D21H11/14D21H15/10D21D1/22
CPCD21H27/16D21D1/22D21H11/08D21H11/14D21H15/10
Inventor 杜林洪增源孟祥强张焱
Owner 上海东冠纸业有限公司
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