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Papermaking method using diaper absorbent core layer fibers

A technology of absorbent core layer and diapers, which is applied in the field of pulp and paper making, can solve the problems of difficult removal of superabsorbent resin, and achieve the effects of improving social and economic benefits, effective recycling, and saving transportation

Inactive Publication Date: 2016-04-06
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for making paper by using the fibers of the absorbent core layer of diapers, which solves the problem that the superabsorbent resin in the diaper material is difficult to remove in the prior art

Method used

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  • Papermaking method using diaper absorbent core layer fibers
  • Papermaking method using diaper absorbent core layer fibers
  • Papermaking method using diaper absorbent core layer fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1, dissolving the fibers in the absorbent core layer of diapers after being pulverized in water, then adding aluminum chloride with 8% of the fiber mass in the absorbent core layer of diapers and stirring thoroughly, and then dispersing to obtain fiber slurry;

[0038] Step 2, making paper from the fibers treated in step 1. Use the ZQJ1-B paper pattern picker to make paper. First, stir the fiber slurry evenly with a stirrer, and put it into the sheet machine, add water to make the slurry concentration on the Internet reach 0.3g / L, drain the water to make it a wet paper web, and then manually press it with a pressure roller. Finally, put it into a paper dryer, and dry it at a temperature of 105° C. for 10 minutes under the condition of a vacuum degree of 0.06 MPa. After drying, put a vacuum and take out the paper.

Embodiment 2

[0040] Step 1, dissolving the fibers in the absorbent core layer of diapers after pulverization in water, then adding aluminum sulfate 10% of the fiber mass in the absorbent core layer of diapers, stirring thoroughly, and then dispersing to obtain fiber slurry;

[0041] Step 2, making paper from the fibers treated in step 1. Use the ZQJ1-B paper pattern picker to make paper. First, stir the fiber slurry evenly with a stirrer, and put it into the sheet machine, add water to make the slurry concentration on the Internet reach 0.3g / L, drain the water to make it a wet paper web, and then manually press it with a pressure roller. Finally, put it into a paper dryer, and dry it at a temperature of 105° C. for 10 minutes under the condition of a vacuum degree of 0.06 MPa. After drying, put a vacuum and take out the paper.

Embodiment 3

[0043] Step 1, pulverizing the fibers of the absorbent core layer of diapers and dissolving them in water, then adding 12% polyaluminum chloride to the mass of the fibers of the absorbent core layer of diapers, stirring thoroughly, and then dispersing to obtain fiber slurry;

[0044] Step 2, making paper from the fibers treated in step 1. Use the ZQJ1-B paper pattern picker to make paper. First, stir the fiber slurry evenly with a stirrer, and put it into the sheet machine, add water to make the slurry concentration on the Internet reach 0.3g / L, drain the water to make it a wet paper web, and then manually press it with a pressure roller. Finally, put it into a paper dryer, and dry it at a temperature of 105° C. for 10 minutes under the condition of a vacuum degree of 0.06 MPa. After drying, put a vacuum and take out the paper.

[0045] The invention realizes the effective recycling of diapers, saves resources to a large extent, fully considers economic factors from the begin...

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Abstract

The present invention discloses a papermaking method using diaper absorbent core layer fibers. The diaper absorbent core layers are pulverized and dissolved in water; an inorganic aluminum salt is added and stirred fully, and then defibering is carried out to obtain a fiber slurry; and then the fiber slurry is subjected to papermaking. According to the papermaking method using diaper absorbent core layer fibers, first the added inorganic aluminum salt destructs interfacial double electrical layers of a superabsorbent hydrogel material to increase the density difference between an inner phase and an outer phase and to promote precipitation of the inner phase; at the same time, the polarity difference between the inner and outer phases is increase, so that outer phase namely an oil phase has decreased solubility in water, and goal of removing SAP is ultimately achieved; the diaper absorbent core layer fibers after SAP removal are reused for papermaking, so as to achieve the effective recovery of diaper absorbent core layers, substantially save resource, energy conservation and transport, reduce emission and improve the social and economic benefits, and make great contribution to the pulping and papermaking industry.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and in particular relates to a method for making paper by using fibers in the absorbent core layer of diapers. Background technique [0002] In recent years, with the sustained and rapid growth of the domestic economy, the improvement of people's material living standards and the convenience of life, the use of diapers by babies and the elderly has increased year by year. According to statistics, in 2007, the total consumption of baby diapers (sheets) in China reached more than 7.75 billion pieces, of which baby diapers exceeded 5.2 billion pieces; baby diapers exceeded 2.5 billion pieces. In the production process of diapers, a large amount of leftover materials will be produced, which will reach 30% of the raw materials according to statistics. Direct disposal of these materials will cause a great waste of resources and also cause certain pollution to the environment. If it can...

Claims

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Application Information

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IPC IPC(8): D21C5/02D21F13/00
CPCD21C5/022D21F13/00Y02W30/64
Inventor 张素风孟卿君雷丹刘丽娜
Owner SHAANXI UNIV OF SCI & TECH
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