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
7 Cites 6 Cited by

AI-Extracted 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 laye...
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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.

Application Domain

Paper recyclingWaste paper working-up +1

Technology Topic

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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(3)

Example Embodiment

[0036] Example 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.

Example Embodiment

[0039] Example 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.

Example Embodiment

[0042] Example 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 beginning of research and development, and the profit of recycling will continue to increase. From the perspective of saving materials, saving energy, saving transportation, reducing emissions, and improving social and economic benefits, The effect is very remarkable, and it can make great contributions to the pulp and paper industry.
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Description & Claims & Application Information

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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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