Search

CN-121976392-A - Foot-care sock and preparation method thereof

CN121976392ACN 121976392 ACN121976392 ACN 121976392ACN-121976392-A

Abstract

The invention relates to the technical field of functional sock preparation, and discloses a foot-care sock and a preparation method thereof, wherein the preparation method comprises the steps of carrying out fibroin solution impregnation treatment on modal fibers to form a moisturizing film layer on the surfaces of the fibers; the method comprises the steps of adopting a four-section alternate feeding blending process, preparing bamboo charcoal fiber, long staple cotton fiber, china hemp fiber and modal fiber subjected to fibroin impregnation treatment into four-component blended yarn, knitting a sock blank with a double-layer structure, performing low-temperature dyeing treatment, performing biological polishing treatment by using cellulase, performing padding finishing by using chitosan-nano silver composite finishing liquid, and finally performing soft finishing and heat setting. According to the invention, the bioactive moisturizing film is formed through fibroin pretreatment, ordered distribution of functional fibers is realized through four-section gradient blending, and the ionic bond combination of chitosan and fibroin enhances the functional stability, so that the technical problem that the functional components of the conventional sock are easy to degrade and passivate in a sweat environment, and structural instability is caused by various fiber swelling differences is solved.

Inventors

  • GUAN GUITIAN
  • GUO ZHANDONG
  • WANG XUEPENG

Assignees

  • 辽源市欧蒂爱袜业有限责任公司

Dates

Publication Date
20260505
Application Date
20260202

Claims (10)

  1. 1. The preparation method of the foot-care sock is characterized by comprising the following steps of: The method comprises the steps of (1) placing a modal fiber in a fibroin solution for impregnation treatment, wherein the concentration of the fibroin solution is 5-8g/L, the molecular weight is 20000-50000Da, the viscosity is 8-15 mPa.s, the pH value is 4.5-5.5, the impregnation temperature is 30-40 ℃, the bath ratio is 1:20-1:30, the impregnation time is 20-30 minutes, and after the impregnation is finished, drying is carried out at the temperature of 60-80 ℃ until the water content is lower than 8%, so that a fibroin moisturizing film layer is formed on the surface of the modal fiber; Preparing four-component blended yarn by adopting a four-section alternate feeding blending process, wherein the bamboo charcoal fiber and the long staple cotton fiber are blended according to the mass ratio of 15:45 in the first section of blending, the hemp fiber and the first section of blending strip are blended according to the mass ratio of 60:10 in the second section of blending, the silk protein impregnated modal fiber is blended according to the mass ratio of 70:20 in the third section of blending, and the hemp fiber and the third section of blending strip are blended according to the mass ratio of 90:10 in the fourth section of blending; Knitting the four-component blended yarn into a sock blank by adopting a knitting process; dyeing the sock blank, wherein the dyeing temperature is controlled to be 60-80 ℃, the dyeing time is controlled to be 40-60 minutes, and the pH value of a dye bath is controlled to be 6.0-7.0; Treating the dyed sock blank with cellulase with enzyme activity of 8000-15000U/g, consumption of 0.5-1.0%, treatment temperature of 50-55 deg. C, pH of 7.0-7.5 and treatment time of 30-60 min, heating to 85-90 deg.c and maintaining for 5-10 min to inactivate the cellulase; Preparing a chitosan-nano silver composite finishing liquid, wherein the concentration of chitosan is 1.5-2.5g/L, the concentration of nano silver is 30-50ppm, the deacetylation degree of chitosan is 80-95%, the weight average molecular weight is 50000-200000Da, the viscosity is 50-200 mPa.s, the pH value of the finishing liquid is 5.0-6.0, padding finishing is carried out on sock blanks, the padding temperature is 30-40 ℃, the padding residual rate is 70-80%, and the sock blanks are dried for 10-15 minutes at the temperature of 80-100 ℃ after padding; and (3) performing soft finishing and heat setting treatment on the sock blank, wherein the setting temperature is controlled to be 130-150 ℃ and the setting time is controlled to be 30-60 seconds, so as to obtain a finished product of the foot-care sock.
  2. 2. The method for preparing the footcare sock according to claim 1, wherein the modal fiber has a fiber fineness of 1.3-1.7dtex and a fiber length of 38-44mm.
  3. 3. The method for preparing the footcare sock according to claim 1, wherein in the four-section alternate feeding blending process, the draft multiple of the first section to the fourth section is 6-8 times, the draft multiple of the roving process is 4-6 times, the draft multiple of the spinning process is 30-40 times, and finally the 32-40-count four-component blended yarn is prepared.
  4. 4. The method for preparing the footcare sock according to claim 1, wherein the bamboo charcoal fiber has a fiber fineness of 1.5-2.0dtex, a fiber length of 38-44mm and a bamboo charcoal content of 15-25%, the long staple cotton fiber is selected from Egypt long staple cotton or Xinjiang long staple cotton, the fiber fineness is 1.5-1.8dtex, the fiber length is 32-38mm, the maturity is not less than 0.85, the fiber fineness of 2.0-3.0dtex, the fiber length is 40-50mm, and the cellulose content is not less than 65%.
  5. 5. The method for preparing the footcare socks according to claim 1, wherein the chitosan and the nano silver are mixed according to a mass ratio of 8:2, the particle size of the nano silver is 20-50nm, the purity is more than or equal to 99.9%, and the appearance is spherical.
  6. 6. The method for preparing the footcare socks according to claim 1, wherein the dyeing treatment adopts vinyl sulfone type reactive dye, the dye amount is 1.0-3.0% of the mass of the sock blank, the soaping treatment is carried out after dyeing, and the soaping treatment is carried out for 10-15 minutes at 60-70 ℃ by using neutral or weak alkaline cleaning agent with pH of 7.0-8.0.
  7. 7. The method for producing a footcare sock according to claim 1, wherein the cellulase is selected from commercial cellulase preparations derived from trichoderma reesei, the enzyme preparations containing three enzyme components of endoglucanase, exoglucanase and beta-glucosidase.
  8. 8. The method for producing a footcare sock according to claim 1, wherein the four-component blended yarn has a bamboo charcoal fiber content of 15%, a long staple fiber content of 45%, a modal fiber content of 20%, and a hemp fiber content of 20%.
  9. 9. The method for producing a footcare sock according to claim 1, wherein the softening treatment uses an amino-modified polydimethylsiloxane softener in an amount of 1.0 to 2.0%, a solid content of 25 to 35%, a viscosity of 500 to 2000 mPa-s, an amino value of 0.3 to 0.8mmol/g, a treatment temperature of 30 to 40 ℃ and a treatment time of 10 to 15 minutes.
  10. 10. The method for preparing the foot-care socks according to claim 1, wherein the knitting process adopts a double-needle bed circular knitting machine, the sock blank is of a double-layer structure, the inner layer adopts flat knitting with knitting density of 180-220 needles/5 cm, and the outer layer adopts rib knitting or double-rib knitting with knitting density of 160-200 needles/5 cm.

Description

Foot-care sock and preparation method thereof Technical Field The invention relates to the technical field of functional sock preparation, in particular to a foot-care sock and a preparation method thereof. Background In the existing sock production, natural fibers or regenerated fibers are generally used for the lateral side yarns, chemical fibers such as spandex, chinlon and terylene are used for the inner side so as to increase elasticity and strength, and the structure is actually contacted with the skin of the foot when being worn, so that the problems of dry foot, foot freeze, foot odor, bacteria breeding and the like are easily caused. Although there are attempts to improve the bacteriostatic and moisturizing properties of socks by functional fiber blending and functional finishing, the following technical drawbacks exist: Firstly, a plurality of functional fibers are simply blended at one time, so that the fibers with different moisture absorption characteristics and surface properties are randomly distributed in the yarn, and the functional fiber action points are dispersed, so that a synergistic effect cannot be formed. Secondly, the functional finishing agent has poor stability in the foot sweat environment. The protein humectant is hydrolyzed under acid catalysis in acidic environment (pH 4.5-6.5) of sweat, and is denatured under urea action in sweat, so that the moisturizing function is attenuated by 30-40% after wearing for 2-3 days, and the metal antibacterial agent (such as nano silver) generates AgCl precipitate under the action of chloride ion (concentration 100-200 mmol/L) in sweat to inactivate, and antibacterial efficiency is reduced by 60-80% in sweat environment. Thirdly, adverse interactions exist among various antibacterial components. The physical adsorption type bacteriostat and the chemical type bacteriostat have adsorption site competition, coordination reaction occurs between the metal ion type bacteriostat and the cationic bacteriostat, and the antibacterial activity of the formed complex is lower than the sum of the components when the components are used independently. Fourth, the swelling behavior of different types of fibers in wet processing and perspiration is significantly different. The swelling rate of the regenerated cellulose fiber can reach 25-30%, the swelling rate of the natural cellulose fiber is about 8-12%, the swelling rate of the bast fiber is only 4-6%, the difference causes the relative displacement and the tension redistribution of the internal fiber in the process of multiple wet treatment of the yarn, and the yarn evenness is increased and the strength is reduced by 20-35%. Disclosure of Invention In order to solve the technical problems, the invention provides a pair of foot-care socks and a preparation method thereof. A preparation method of a foot-care sock comprises the following steps: The method comprises the steps of (1) placing a modal fiber in a fibroin solution for impregnation treatment, wherein the concentration of the fibroin solution is 5-8g/L, the molecular weight is 20000-50000Da, the viscosity is 8-15 mPa.s, the pH value is 4.5-5.5, the impregnation temperature is 30-40 ℃, the bath ratio is 1:20-1:30, the impregnation time is 20-30 minutes, and after the impregnation is finished, drying is carried out at the temperature of 60-80 ℃ until the water content is lower than 8%, so that a fibroin moisturizing film layer is formed on the surface of the modal fiber; Preparing four-component blended yarn by adopting a four-section alternate feeding blending process, wherein the bamboo charcoal fiber and the long staple cotton fiber are blended according to the mass ratio of 15:45 in the first section of blending, the hemp fiber and the first section of blending strip are blended according to the mass ratio of 60:10 in the second section of blending, the silk protein impregnated modal fiber is blended according to the mass ratio of 70:20 in the third section of blending, and the hemp fiber and the third section of blending strip are blended according to the mass ratio of 90:10 in the fourth section of blending; Knitting the four-component blended yarn into a sock blank by adopting a knitting process; dyeing the sock blank, wherein the dyeing temperature is controlled to be 60-80 ℃, the dyeing time is controlled to be 40-60 minutes, and the pH value of a dye bath is controlled to be 6.0-7.0; Treating the dyed sock blank with cellulase with enzyme activity of 8000-15000U/g, consumption of 0.5-1.0%, treatment temperature of 50-55 deg. C, pH of 7.0-7.5 and treatment time of 30-60 min, heating to 85-90 deg.c and maintaining for 5-10 min to inactivate the cellulase; Preparing a chitosan-nano silver composite finishing liquid, wherein the concentration of chitosan is 1.5-2.5g/L, the concentration of nano silver is 30-50ppm, the deacetylation degree of chitosan is 80-95%, the weight average molecular weight is 50000-200000Da, the viscosity is 50-200 mPa.s