Natural antibacterial non-woven fabric and preparation method thereof
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A natural antibacterial, non-woven fabric technology, applied in textiles and papermaking, resistance to media-borne diseases, liquid-repellent fibers, etc., to achieve excellent antibacterial performance, save manpower and equipment costs, and simple production process
Pending Publication Date: 2022-05-31
冠和卫生用品有限公司
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Chitosan is an organic antibacterial material and a natural biomass polysaccharide polymer material. It has good biocompatibility, microbial degradation and many other excellent properties. It is widely found in marine invertebrates (such as shrimp, In the shell of crab), the annual biosynthesis in nature is as high as 1×10 10 Ton is the second largest natural polymer next to cellulose; however, due to the similar molecular structure of chitosan and cellulose, the strong hydrogen bond force between the molecules makes it insoluble in water and most organic solvents, and Precipitated form exists, limiting its application
Method used
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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Embodiment 1
[0021] A preparation method of natural antibacterial non-woven fabrics, comprising: making spun-bonded non-woven fabrics from PP slices through a spun-bonded production process; coating chitosan dispersion on the spun-bonded non-woven fabrics, and drying The natural antibacterial non-woven fabric is obtained. Wherein, the chitosan dispersion is composed of the following components by mass percentage: 0.6% water-soluble modified chitosan, 8% hydrophilic oil agent, 0.5% adhesive, and the rest is water (specifically to remove ionized water).
[0022] In this embodiment, the adhesive is a mixture of water-based polyurethane and water-based blocked isocyanate, and the mass ratio of the two is 7:3.
[0023] In the present embodiment, the hydrophilic oil agent is a nonionic surfactant, which includes the following components by mass percentage: polyethylene glycol fatty acid ester 72%, silicone oil 24%, wetting agent 1.5%, Water 2.5%. Wherein, the wetting agent is sodium dioctyl s...
Embodiment 2
[0029] A preparation method of natural antibacterial non-woven fabric is basically the same as Example 1, except that the chitosan dispersion is composed of the following components by mass percentage: water-soluble modified chitosan 1% , 10% of hydrophilic oil agent, 1% of adhesive, and all the other are water (specifically deionized water); said hydrophilic oil agent includes the following components by mass percentage: polyethylene glycol fatty acid ester 73% , silicone oil 22%, wetting agent 3%, water 2%.
Embodiment 3
[0031] A preparation method of natural antibacterial non-woven fabric is basically the same as Example 1, except that the chitosan dispersion is composed of the following components by mass percentage: 0.4% water-soluble modified chitosan , 8% of hydrophilic oil agent, 0.5% of adhesive, and all the other are water (specifically deionized water); said hydrophilic oil agent includes the following components by mass percentage: polyethylene glycol fatty acid ester 71% , silicone oil 26%, wetting agent 1%, water 2%.
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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Abstract
The invention relates to a natural antibacterial non-woven fabric and a preparation method thereof. The preparation method comprises the following steps: preparing a spunbond non-woven fabric from PP slices through a spunbond production process; and coating a chitosan dispersion liquid on the spun-bonded non-woven fabric, and drying to obtain the natural antibacterial non-woven fabric. Wherein the chitosan dispersion liquid is prepared from the following components in percentage by mass: 0.3 to 1 percent of water-soluble modified chitosan, 0.3 to 1 percent of adhesive and the balance of water. The natural biomass polysaccharide high polymer material chitosan is used as an organic antibacterial raw material, the adhesion of the water-soluble modified chitosan to the spun-bonded non-woven fabric is enhanced through the adhesive, the effective bacteriostasis effect on gram-positive bacteria and gram-negative bacteria can be achieved, the prepared natural antibacterial non-woven fabric has the excellent antibacterial performance, and the antibacterial property of the non-woven fabric is improved. The composition is non-toxic, pollution-free and excellent in safety. The natural antibacterial non-woven fabric prepared by the invention can be a hydrophilic non-woven fabric or a water-repellent non-woven fabric with an antibacterial function, the preparation process is simple, the operation is convenient, and the manpower and equipment cost is saved.
Description
technical field [0001] The invention belongs to the technical field of nonwoven fabrics, and in particular relates to a natural antibacterial nonwoven fabric and a preparation method thereof. Background technique [0002] The baby's skin is delicate and easy to breed bacteria and produce peculiar smell when using diapers. Even if the diapers are changed frequently, similar problems still plague the baby, affecting the health and comfort of the baby. Therefore, in addition to the basic characteristics of strong moisture absorption and good air permeability, baby diapers should also have antibacterial properties and no side effects, making babies more comfortable to wear and reducing baby buttock infections. The main material of diapers is non-woven fabric, and the main raw materials of non-woven fabric are polyester and polypropylene. Spun-bonded non-woven fabrics are formed after the polymer is melt-extruded and stretched to form continuous filaments, the filaments are laid...
Claims
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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