Method for preparing natural cellulose nonwoven fabric in wet-type meltblown mode

A natural cellulose and cellulose technology, applied in the direction of single-component cellulose rayon, wet spinning, non-woven fabrics, etc., can solve the problems of high cost, high cost, adverse impact on the environment, etc., and achieve manufacturing cost The effect of reducing and shortening the process

Active Publication Date: 2011-07-20
张文波
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Problems solved by technology

[0002] At present, the non-woven fabric made of man-made synthetic fibers is made of molten high-molecular polymer raw materials, which are extruded and stretched by direct extrusion (spunlaid) to form continuous long fibers, and then stacked into a net shape. Long fibers can endow non-woven fabrics with good air permeability and water absorption and other physical properties, so they have been widely used in fields such as hygiene products, wiping materials, medical protection and filter materials; in addition, the non-woven fabrics produced by the aforementioned direct extrusion method Output, its market share according to the statistics of the American Nonwovens Industry Association (INDA), has grown from 33.5% (second place) in 1994 to 43.7% (first place) in 2009, and the overall output has reached 2.7% per year. 10,000 tons, and the largest amount of raw materials used in its production are polypropylene (PP), polyester (PET), polyethylene (PE) and nylon (Nylon), which together account for 96% of the total usage, so When these larg

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  • Method for preparing natural cellulose nonwoven fabric in wet-type meltblown mode
  • Method for preparing natural cellulose nonwoven fabric in wet-type meltblown mode
  • Method for preparing natural cellulose nonwoven fabric in wet-type meltblown mode

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[0029] The technical solution of the present invention will be further described below in conjunction with the drawings and embodiments.

[0030] See Figure 1 to Figure 5 As shown, the present invention uses a wet melt-blown method to prepare a natural cellulose non-woven fabric, and its steps include:

[0031] a. Use wood pulp (pulp) as the raw material; select long and short fiber wood pulp cellulose with an α-cellulose content of more than 65%, and its degree of polymerization (DP) is between 500 and 1200 ;

[0032] b. Add N-methylmorpholine N-oxide (NMMO for short), its chemical structure is as figure 2 (Shown) and phenyl oxazoline stabilizer (1,3-phenylene-bis 2-oxazoline, BOX) are mixed in wood pulp to dissolve into a mucus (dope); it uses a horizontal mixer to mix After the wood pulp cellulose, oxidized methyl malin solvent and phenyloxazole additives are put together, they are pulverized at a high speed at a low temperature of 60℃~80°C, and the cellulose swelling property...

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Abstract

The invention provides a method for preparing a natural cellulose nonwoven fabric in a wet-type meltblown mode, which comprises the following steps: adding an N-methylmorpholine N-oxide solvent into pulp which is used as a raw material, mixing to dissolve the pulp so as to obtain a dope, extruding the dope out of a spinning port in a meltblown mode to form a cellulose filament, solidifying and regenerating the cellulose filament through water spraying, washing with water, carrying out spunlace, drying, coiling and the like, thereby obtaining the natural cellulose fiber nonwoven fabric in a continuous long fiber shape.

Description

【Technical field】 [0001] The invention relates to a method for preparing natural cellulose non-woven fabrics by wet melt-blowing, especially an environmentally friendly process with low manufacturing costs and no environmental pollution. The finished non-woven fabrics are in the form of long fibers, and It has good physical properties such as air permeability and water absorption, and can be used in textiles, medical and sanitary materials, filter materials, biotechnology materials, and photoelectric wafer wiping. 【Background technique】 [0002] At present, the non-woven fabric made of man-made synthetic fibers is made of molten high-molecular polymer raw materials, which are extruded and stretched by direct extrusion (spunlaid) to form continuous long fibers, and then stacked into a net shape. Long fibers can endow non-woven fabrics with good air permeability and water absorption and other physical properties, so they have been widely used in fields such as hygiene products...

Claims

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Application Information

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IPC IPC(8): D04H3/10D01D5/06D01F2/00
Inventor 周文东赖明毅黄坤山
Owner 张文波
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