CN-122013438-A - Sodium alginate modified lyocell fiber needled non-woven fabric mask base cloth and preparation method thereof

Abstract

The invention relates to the technical field of textile materials and discloses a sodium alginate modified lyocell fiber needled non-woven fabric mask base fabric and a preparation method thereof, wherein the base fabric is formed by interweaving sodium alginate coated modified lyocell fibers through a multi-needle plate needling process, comprises a lyocell fiber core layer and a sodium alginate hydrogel layer serving as a shell layer, the lyocell fiber core layer and the sodium alginate hydrogel layer are uniformly coated on the surface and the tail end of the lyocell fiber to form a firm core-shell structure, the hydrogel can be expanded after being absorbed and filled with a strip ring structure and pores formed by needling to provide space for the water absorption expansion of the hydrogel, the hydrogel can be filled with the structure after being expanded, the stiffness of the needled base fabric is eliminated, the bonding uniformity among fibers is improved, the whole ventilation channel of the base fabric is not blocked, the ventilation property and the ductility are considered, and in addition, the high water absorption of the hydrogel film can improve the water absorption capacity of the base fabric, and the bearing function of the needled structure is matched, and the balance of liquid absorption and liquid retention and softness is realized.

Inventors

• YANG ZIQIANG
• GAN YI
• LI CHENYANG
• XU SHIXUE

Assignees

• 逸祥个护家清健康研究(河南)有限公司

Dates

Publication Date

20260512

Application Date

20260228

Claims (9)

1. 1. The sodium alginate modified lyocell fiber needled non-woven fabric mask base cloth is characterized in that the mask base cloth is of a fiber entanglement net-shaped porous structure, the fiber entanglement net-shaped porous structure is formed by mutually entangling a plurality of sodium alginate modified lyocell fibers through a needling process, and the fiber entanglement net-shaped porous structure comprises lyocell fibers (1) serving as a core layer and sodium alginate hydrogel layers (2) wrapping the surface of the core layer and serving as a shell layer.
2. 2. The sodium alginate modified lyocell fiber needled non-woven fabric mask base cloth according to claim 1, wherein the sodium alginate hydrogel layer (2) is a compact hydrogel film formed by crosslinking sodium alginate and calcium chloride, and the sodium alginate hydrogel layer (2) also coats the tail ends of the lyocell fibers (1).
3. 3. The mask base cloth of the sodium alginate modified lyocell fiber needled non-woven fabric according to claim 1, wherein the thickness of the sodium alginate hydrogel layer (2) is 50-200nm, and the gram weight of the mask base cloth is 60-90g/m 2 .
4. 4. The preparation method of the sodium alginate modified lyocell fiber needled non-woven fabric mask base fabric is characterized by comprising the following steps of: step 1, immersing the lyocell fiber (1) in a coating liquid of sodium alginate and a calcium ion cross-linking agent, so that the sodium alginate and the calcium ion cross-linking agent form a sodium alginate hydrogel layer (2) and are coated on the surface of the lyocell fiber (1) to obtain sodium alginate modified lyocell fiber; Step 2, carding sodium alginate modified lyocell fibers into a net, and then reinforcing by adopting a needling process to form a base fabric blank; and step 3, drying the base fabric blank to obtain the sodium alginate modified lyocell fiber mask base fabric.
5. 5. The method according to claim 4, wherein the sodium alginate is present in the coating solution in a mass concentration of 0.1 to 10%, the calcium ion crosslinking agent is present in a mass concentration of 0.1 to 10%, and the pH of the coating solution is 6.5 to 7.5.
6. 6. The method according to claim 4, wherein the calcium ion crosslinking agent is calcium chloride and the bath ratio of the impregnation is (1:10) - (1:50), and the method further comprises the step of rinsing the fiber with deionized water after the impregnation to remove sodium alginate with free surface and calcium ions which do not participate in crosslinking.
7. 7. The method according to claim 4, further comprising the step of pre-treating the lyocell fibers before the step 1, wherein the lyocell fibers (1) are subjected to ultrasonic cleaning in deionized water and then dried to constant weight.
8. 8. The method according to claim 4, wherein the needling process in step 2 is a multi-needle-plate needling process, and the fibers are interlaced and entangled with each other by alternately penetrating a plurality of needle plates to form a base fabric blank having a doughnut structure and pores.
9. 9. The method according to claim 4, wherein the moisture content of the mask base fabric is 1-10% after the base fabric blank in step 3 is dried.

Description

Sodium alginate modified lyocell fiber needled non-woven fabric mask base cloth and preparation method thereof Technical Field The invention relates to the technical field of textile materials, in particular to sodium alginate modified lyocell fiber needled non-woven fabric mask base cloth and a preparation method thereof. Background Sodium alginate is a linear polysaccharide extracted from natural algae such as brown algae, is used as a natural biological macromolecular material, has excellent biocompatibility, safety and hydrophilicity, is nontoxic and nonirritant, can be gently tolerated by human skin, and can be completely biodegraded in natural environment. The performance of the mask base cloth serving as a carrier of the mask essence directly determines the use experience, essence bearing efficiency and skin care auxiliary effect of the mask, and is a core component of the mask product. The mask base cloth materials in the current market are various, mainly comprise cotton fibers, viscose fibers, lyocell fibers, chemical fibers, composite fibers and the like, wherein the lyocell fibers have excellent hygroscopicity, air permeability, softness and biodegradability, have no harmful substance residues, and are widely applied to the preparation of high-end-face mask base cloth. However, the conventional lyocell fiber mask base cloth still has a plurality of technical bottlenecks in practical application, namely, firstly, the liquid absorption and liquid retention performances are limited, although the hygroscopicity of the conventional lyocell base cloth is superior to that of cotton fibers, the conventional lyocell fiber mask base cloth is difficult to realize rapid and full absorption when facing high-concentration and high-viscosity functional essence, the essence after absorption is easy to drip and run off in the using process, the essence utilization rate is reduced, secondly, softness and skin feel are required to be optimized, the surface of the lyocell fiber has fibrillation, the friction coefficient among fibers is higher, the facial skin is sensitive and fragile, the tail ends of the lyocell fiber are sharp, the manufactured base cloth can bring obvious rough touch feeling, the sharp fiber tail ends are easy to generate stabbing pain feeling when contacting skin, and are more easy to cause skin discomfort, thirdly, the antibacterial performance is lack, the mask base cloth is easy to generate pathogenic bacteria such as escherichia coli, staphylococcus aureus in the manufacturing and storing processes, the skin infection risks exist, the conventional antibacterial base cloth is mostly dependent on the addition of chemical antibacterial agent, the irritation and biosafety are easy to be optimized, fourthly, the water stabbing process is smooth, the base cloth can be manufactured, the needle cloth has high-level, the manufacturing efficiency, the needle is easy to form a large-shaped texture, the needle is difficult to form a stiff, the needle is difficult to process, the needle is difficult to manufacture, the needle is difficult to form a needle, and the needle is difficult to be convenient to stretch, and convenient to manufacture, and has a sharp needle, and poor in processing, and poor in quality, and convenient to produce, and easy to use. Regarding to solving the problems of improving the absorbability of fibers, maintaining the liquidity, softening and skin-friendly and inhibiting fungus growth, a high-moisture facial mask based on cellulose fibers and a preparation method thereof are disclosed at present, and the modified facial mask base cloth is prepared by treating isopropanol, sodium hydroxide, tetramethyl ammonium hydroxide, propylene oxide and glucose oxidase. However, the additives of the method are chemical reagents, strong alkali and propylene oxide are easy to remain in the base cloth, so that the skin can be stimulated, the skin barrier can be damaged, and the environmental protection safety is poor. The invention discloses a water-jet fabric containing alginate fibers and a preparation method thereof, and a preparation method of a composite alginate fiber mask base fabric based on grafted modified propylene glycol alginate, wherein the water-jet fabric consists of alginate fibers and other hydrophilic fibers, and the alginate fibers are gelled after water absorption, but the fibers are randomly mixed and entangled in the technical scheme, the alginate fibers are unevenly dispersed, and the water-jet fabric is locally compacted due to high water jet pressure, and the porosity is uneven, and the composite alginate fiber mask base fabric has the defects that the moisture absorption of the base fabric is improved by grafting a modifier of octanethiol and diallyl amine onto a propylene glycol alginate macromolecule, and the skin feel strength is influenced due to the fact that the process is complicated and high Wen Gaohao and the fiber structure is easy to break. Also discloses