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Recycled paper diaper leftover material fiber reconstituted antibacterial paper and preparation method thereof

A technology of scraps and diapers, which is applied in the field of pulp and paper making, can solve the problems of superabsorbent resin barrier, low paper strength, and high difficulty, and achieve the effects of improving social and economic benefits, good strength performance, and saving transportation

Inactive Publication Date: 2019-11-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that diaper scraps contain 15% to 45% superabsorbent resin (SAP), and the fiber itself is fluff pulp with low strength, which is essentially different from plant fiber raw materials. If it is reused and prepared for antibacterial paper, it needs To solve the problems of superabsorbent resin barriers, low paper strength, and endowment of antibacterial properties, the preparation technology requires high requirements and is difficult
And in the current research results, some antibacterial ingredients are single, and the antibacterial effect is unknown; some antibacterial ingredients are complex, there are many types of chemicals, and the cost is high

Method used

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  • Recycled paper diaper leftover material fiber reconstituted antibacterial paper and preparation method thereof
  • Recycled paper diaper leftover material fiber reconstituted antibacterial paper and preparation method thereof
  • Recycled paper diaper leftover material fiber reconstituted antibacterial paper and preparation method thereof

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preparation example Construction

[0056] The present invention also provides a method for preparing the above-mentioned recycled diaper scrap fiber reconstituted antibacterial paper, the specific steps are as follows:

[0057] Step 1, pulverizing the leftover fiber of the diaper and dissolving it in water, then adding polyaluminum chloride, bentonite, zeolite powder, and nano-titanium dioxide in order to fully stir, and then dispersing to obtain a fiber slurry;

[0058] In step 1, the amount of polyaluminum chloride added is 0.5% to 0.8% of the fiber mass of diaper scraps; the amount of bentonite added is 0.3% to 1.0% of the mass of diaper scrap fibers; the amount of zeolite powder added is 0.5% of the mass of diaper scrap fibers. 0.1% to 0.5%; the amount of nano-titanium dioxide added is 10% to 40% of the fiber mass of diaper scraps;

[0059] In step 1, use the deflagging machine to decompose the slurry, and the rotating speed is 25000 revolutions;

[0060] Step 2, papermaking the fiber slurry obtained after...

Embodiment 1

[0075] 1) The crushed absorbent layer of diaper scraps was collected as the raw material for the experiment, and the raw material came from a diaper manufacturer.

[0076] 2) Take 2.6 grams of the pulverized sample of paper diaper scrap fiber, add it to 500ml of water, use the 260 type deflagger machine produced by Sweden AB L&W company to decompose the slurry, decompose at 25000 rpm, add water until the concentration of the slurry reaches 0.5%, and use a paper sampler Papermaking and drying at 105° C. were performed to prepare paper sheets, which were used as blank samples.

[0077] 3) Take 2.6 grams of diaper scrap fiber pulverized sample, add 300ml of water, and weigh 0.5% polyaluminum chloride relative to the diaper scrap fiber mass, 1.0% bentonite relative to the diaper scrap fiber mass, and 1.0% bentonite relative to the diaper scrap fiber mass. 0.5% zeolite powder of the fiber quality, 40% nano-titanium dioxide relative to the fiber quality of paper diaper scraps, and a...

Embodiment 2

[0081] Take 2.6 grams of the pulverized sample of diaper scrap fiber, add it to 300ml of water, and weigh 0.6% of polyaluminum chloride relative to the mass of diaper scrap fiber, 0.5% of bentonite relative to the mass of diaper scrap fiber, and 0.5% of the weight of diaper scrap fiber. 0.3% zeolite powder, 30% nano-titanium dioxide relative to the quality of paper diaper scrap fiber, and add it to the fiber slurry, add water to 500ml, stir evenly, and then use the 260 type produced by Sweden AB L&W company The deflaking machine decomposes the pulp, decomposes at 25,000 rpm, puts it into the paper sample picker after the fiber decompression is completed, adds water until the concentration of the pulp on the Internet reaches 0.5%, drains the water to make it a wet paper web, and then manually presses it with a press roller, and finally Put it into a paper sheet dryer, and dry it at a temperature of 105°C for 5 minutes under a vacuum of 0.06 MPa. After drying, put it in a vacuum ...

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Abstract

The invention discloses recycled paper diaper leftover material fiber recycled antibacterial paper. The paper comprises an antibacterial raw paper layer, and antibacterial coatings are arranged on thefront face and the back face of the antibacterial raw paper layer. The invention also discloses a preparation method of the antibacterial paper. The method comprises the following steps: 1, pulverizing paper diaper leftover material fibers, dissolving the pulverized fibers into water, sequentially adding polyaluminum chloride, bentonite, zeolite powder and nano titanium dioxide, performing sufficient stirring, and performing defibering to obtain fiber pulp; 2, performing papermaking on the fiber pulp obtained after treatment in the step 1; 3, simultaneously dissolving sodium alginate and konjac glucomannan into water to obtain a mixed solution, so as to obtain a modified sodium alginate sizing agent; 4, sizing the front and back surfaces of the antibacterial raw paper with the sizing agent obtained in the step 3; and 5, soaking the sized paper obtained in the step 4 into a zinc chloride solution for 30 minutes, then performing soaking in water for 10 seconds to obtain antibacterial coatings, taking out the coated paper, and feeding the coated paper into a calendering dryer for drying and calendaring treatment. The method provided by the invention is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and specifically relates to an antibacterial paper reconstituted from recycled diaper leftover fibers; Background technique [0002] With the gradual improvement of the national consumption level in our country, consumers have higher and higher requirements for the functionality of paper, and the antibacterial performance of paper will also become one of the commodity functions that consumers care about. In daily life and work, everyone has to deal with paper, such as banknotes, toilet paper, printing paper, homework books, textbooks, magazines, various bills, etc. Therefore, in order to avoid cross-infection, the research and development of antibacterial paper has an important role significance. At present, researchers in the industry have achieved some results: an antibacterial paper and its preparation method (application number: 201810367048.4, application publication date: 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/67D21H21/16D21H23/52D21H27/20D21F11/00
CPCD21H27/20D21F11/00D21H23/52D21H21/16D21H17/675D21H17/67
Inventor 孟卿君王念东薛俭张素风刘汉斌
Owner SHAANXI UNIV OF SCI & TECH
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