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Production method of cellulose non-woven fabric with functions of mildew proofing, antibiosis and deodorization through wet-type meltbrown

A technology of cellulose and natural cellulose, applied in the direction of single-component cellulose rayon, wet spinning, non-woven fabrics, etc., can solve the problems of natural environment decomposition, environmental adverse impact, etc., and achieve the effect of reducing manufacturing costs

Active Publication Date: 2014-07-16
张文波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, non-woven fabrics made of artificial synthetic fibers are made of molten polymer raw materials, which are extruded and extended by direct extrusion (spunlaid) to form continuous long fibers, and then stacked into a net to form a finished non-woven fabric. Because long fibers can endow nonwovens with good air permeability and water absorption and other physical properties, they have been widely used in fields such as hygiene products, wiping materials, medical protection and filtering materials; according to the American Nonwovens Industry Association (INDA) According to statistics, the market share of the man-made synthetic fiber non-woven fabric has grown from 33.5% in 1994 (second place) to 43.7% (first place) in 2009, and the overall output has reached 2.7 million tons per year, while other The largest amount of raw materials used in production are polypropylene (PP), polyester (PET), polyethylene (PE) and nylon (Nylon), which together account for 96% of the total usage. When the fiber non-woven fabric becomes waste after use, because it cannot be decomposed by the natural environment, it will have a huge adverse impact on the environment.

Method used

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  • Production method of cellulose non-woven fabric with functions of mildew proofing, antibiosis and deodorization through wet-type meltbrown
  • Production method of cellulose non-woven fabric with functions of mildew proofing, antibiosis and deodorization through wet-type meltbrown
  • Production method of cellulose non-woven fabric with functions of mildew proofing, antibiosis and deodorization through wet-type meltbrown

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 (i.e. sample numbers 1 to 12 of the present invention):

[0047] Take wood pulp cellulose with a degree of polymerization of 650 and add chitosan macromolecule (chitosan) with a degree of deacetylation of 87% and 95% after functional modification and nanonization, accounting for 0.1wt% to 5.0wt% of the fiber , mixed with the solvent oxidized methylmorpholine in a slurry, then use a vacuum thin film evaporator to evaporate the excess water, heat at 80°C to 120°C, and remove the water to 5% to 13% within 5 minutes. Cellulose dissolves into mucus (dope), and the composition of mucus is shown in Table 1. Then the mucus is sent to the melt-blown machine with a metering pump for melt-blowing, sprayed out through the spinning nozzle to form a non-woven mesh, solidified with water mist and regenerated, and then washed with water, water-needled, dried and coiled to complete the process in Table 1. Table of each mucus composition of samples 1 to 12.

[0048] Table ...

Embodiment 2

[0051] Embodiment 2 (i.e. sample numbers 13-24 of the present invention):

[0052] Take wood pulp cellulose with a degree of polymerization of 1050 and add chitosan macromolecule (chitosan) with a degree of deacetylation of 87% and 95% after functional modification and nanonization, accounting for 0.1wt% to 5.0wt% of the fiber , mixed with the solvent oxidized methylmorpholine in a slurry, then use a vacuum thin film evaporator to evaporate the excess water, heat at 80°C to 120°C, and remove the water to 5% to 13% within 5 minutes. Cellulose dissolves into mucus (dope), and the composition of mucus is shown in Table 2. The slime is sent to the melt-blown machine with a metering pump for melt-blowing. The melt-blown nonwoven fabric is regenerated in a coagulation bath, and then washed with water, needle-rolled, dried and coiled to complete the slimes of samples 13 to 24 in Table 2. Composition table.

[0053] Table 2 The mucus composition of each sample

[0054]

Embodiment 3

[0055] Example 3 (evaluation of anti-mildew function):

[0056] For the evaluation of anti-mold function, Staphylococcus aureus subsp.Aureus10451 was used as the test strain, and the number of bacteria was first cultivated to 5-70E +5 (number of bacteria / milliliter), get 0.2ml of test bacterium liquid and spread evenly on the sample of 0.2g, place in a sterilized capped sample bottle, and cultivate at 35°C for 18 hours. Then add 20ml of sterilized buffered saline, shake vigorously for 30 times, let the test bacteria disperse in the solution, take the solution after appropriate dilution, take 1ml for agar broth culture, the culture condition is 35°C for 48 hours, and then count the colonies The number of growth, and finally the number of bacteria on the sample can be calculated according to the dilution factor and volume. The above experiment was repeated 6 times. After calculating the average number of total bacteria, the anti-mold effect of the sample can be judged according...

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Abstract

The invention provides a production method of a cellulose non-woven fabric with functions of mildew proofing, antibiosis and deodorization through wet-type meltbrown, comprising the following steps of: adding natural chitosan macromolecules subjected to functionalized modification and nanocrystallization into a size prepared from pulp and N-methylmorpholine N-oxide (short for NMMO) to be mixed and dissolved to form a dope; then spraying the dope from a spinning nozzle in a meltbrown way to form a non-woven fabric silk net, and carrying out water mist solidification and regeneration; and finally, washing with water, rolling with a squirt cut, drying, rolling and carrying out other procedures to obtain a natural cellulose non-woven fabric with functions of mildew proofing, antibiosis and deodorization and a continuous filament form. The cellulose non-woven fabric with functions of mildew proofing, antibiosis and deodorization can be applied to wiping textiles, medical consumables, filtering materials, biotechnical materials, photoelectric wafers and the like with functions of mildew proofing, antibiosis and deodorization.

Description

【Technical field】 [0001] The invention relates to a method for making cellulose nonwoven fabrics with anti-mildew, antibacterial and deodorizing functions by wet melt-blowing, especially an environmentally friendly process with low manufacturing cost and no environmental pollution. The finished non-woven fabric produced by it It is a long fiber type, and has anti-mildew, anti-bacterial and deodorizing functions, and can be used in textiles, medical and sanitary materials, filter materials, biotechnology materials, and photoelectric wafer wiping. 【Background technique】 [0002] At present, non-woven fabrics made of artificial synthetic fibers are made of molten polymer raw materials, which are extruded and extended by direct extrusion (spunlaid) to form continuous long fibers, and then stacked into a net to form a finished non-woven fabric. Because long fibers can endow nonwovens with good air permeability and water absorption and other physical properties, they have been wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/10D01D1/02D01D5/06D01D5/40D01F2/10
Inventor 周文东赖明毅黄坤山
Owner 张文波
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