阅读说明：本技术 一种舒适度高的布鞋及其制造工艺 (Cloth shoe with high comfort level and manufacturing process thereof ) 是由 朱江 于 2021-01-18 设计创作，主要内容包括：本发明涉及制鞋技术领域,提供了一种舒适度高的布鞋及其制造工艺。制造工艺,包括：S1、浸取：取干燥的构树皮,粉碎,加入酸性离子液体水溶液,浸取处理一段时间过滤得到滤液；S2、浓缩：向所得滤液中加入粘结剂、增塑剂、增稠剂和螯合剂,加热搅拌浓缩至含水量为10～30wt％得到浓缩液；S3、鞋底制造：在鞋底基底上覆盖一层厚度为1～10mm的浓缩液,使其干燥固化,然后在其表面设置棉质填充层得到鞋底；S4、布鞋制造。本发明通过酸性离子液体处理,可加速构树皮中各种有效成分的溶出提取,提高构树皮的生物利用度。制得的鞋底耐磨性、韧性强；透气性好,防汗不臭脚,保健效果好,同时也提高了布鞋的舒适性。(The invention relates to the technical field of shoemaking, and provides a cloth shoe with high comfort level and a manufacturing process thereof. A manufacturing process comprising: s1, leaching: taking dried paper mulberry bark, crushing, adding an acidic ionic liquid aqueous solution, leaching for a period of time, and filtering to obtain a filtrate; s2, concentration: adding a binder, a plasticizer, a thickening agent and a chelating agent into the obtained filtrate, heating, stirring and concentrating until the water content is 10-30 wt% to obtain a concentrated solution; s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 1-10 mm on the sole base, drying and solidifying the concentrated solution, and then arranging a cotton filling layer on the surface of the concentrated solution to obtain the sole; s4, manufacturing cloth shoes. The invention can accelerate the dissolution and extraction of various active ingredients in paper mulberry bark and improve the bioavailability of the paper mulberry bark by acidic ionic liquid treatment. The prepared sole has strong wear resistance and toughness; good air permeability, sweat resistance, foot odor resistance, good health care effect and improved comfort of the cloth shoes.)

1. A manufacturing process of a cloth shoe with high comfort level is characterized by comprising the following steps:

s1, leaching: taking dried paper mulberry bark, crushing, adding an acidic ionic liquid aqueous solution, leaching for a period of time, and filtering to obtain a filtrate;

s2, concentration: adding a binder, a plasticizer, a thickening agent and a chelating agent into the obtained filtrate, heating, stirring and concentrating until the water content is 10-30 wt%, so as to obtain a concentrated solution;

s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 1-10 mm on the sole substrate, drying and solidifying the concentrated solution, and then arranging a cotton filling layer on the surface of the concentrated solution to obtain the sole;

s4, manufacturing cloth shoes: and sewing the vamp on the obtained sole to obtain the finished product of the cloth shoe.

2. The manufacturing process of cloth shoes with high comfort level according to claim 1, wherein the water content of the paper mulberry bark in step S1 is 5-30 wt%, and/or the paper mulberry bark is crushed and then screened with a 10-50 mesh screen.

3. The manufacturing process of cloth shoes with high comfort level according to claim 1, wherein the acidic ionic liquid aqueous solution in step S1 specifically comprises: 0.5-20 parts of acidic ionic liquid and 80-150 parts of water.

4. The manufacturing process of cloth shoes with high comfort level as claimed in claim 1, wherein the acidic ionic liquid in step S1 is sulfonic acid functionalized triethylamine ionic liquid, wherein the anion is AlC1₄ˉ、HSO₄ˉ、NO₃ˉ、H₂PO₄ˉ、BF₄ˉ、PF₆ˉ、CF₃CO₂-or CF₃SO₃ˉ。

5. The manufacturing process of the cloth shoe with high comfort level according to claim 1, wherein the leaching treatment in step S1 is: the leaching temperature is 20-60 ℃, and the leaching time is 4-24 h;

or the leaching treatment in the step S1 is as follows: the ultrasonic frequency is 5-15 kHz, the ultrasonic temperature is 20-60 ℃, and the ultrasonic time is 2-10 h.

6. The manufacturing process of cloth shoes with high comfort level according to claim 1, characterized in that, in step S2, the adhesive comprises one or more of ethylene-vinyl acetate copolymer emulsion, amino resin, vulcanized silicone rubber, cyanoacrylate; and/or

The plasticizer comprises one or more of citric acid esters, polyethylene glycol and phthalate; and/or

The thickening agent comprises one or more of methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, polyquaternium 1, polyquaternium 6, guar gum, xanthan gum, pectin, carrageenan, chitosan and chitosan; and/or

The chelating agent comprises EDTA and/or disodium EDTA.

7. The manufacturing process of cloth shoes with high comfort level according to claim 1, characterized in that in step S2, the binder is added in an amount of 0.1-1 wt% of the mass of the concentrated solution, and/or the plasticizer is added in an amount of 0.1-1 wt% of the mass of the concentrated solution, and/or the thickener is added in an amount of 0.1-1 wt% of the mass of the concentrated solution, and/or the chelating agent is added in an amount of 0.02-0.2 wt% of the mass of the concentrated solution.

8. The manufacturing process of the cloth shoe with high comfort degree according to claim 1, wherein the temperature of the heating and stirring in the step S2 is 40-70 ℃.

9. The manufacturing process of cloth shoes with high comfort level according to claim 1, wherein the drying and solidifying in step S3 is drying and solidifying in natural ventilation; and/or

In the step S3, moxa and/or bamboo fiber is further provided in the cotton filling layer.

10. A high-comfort cloth shoe, characterized by being manufactured according to the manufacturing process of any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of shoemaking, in particular to a cloth shoe with high comfort level and a manufacturing process thereof.

Background

Paper mulberry is widely distributed in Hunan West region of Hunan province, is a wide vegetation resource, and is used and recorded in the medicine of the soil family Miao nationality: the paper mulberry bark has the functions of inducing diuresis to reduce edema and dispelling wind-damp. The effects of the external application on treating edema, aching pain of bones and muscles and neurodermatitis and tinea are proved by modern medicine. Paper of paper mulberry bark is characterized by toughness, whiteness, softness, smoothness, long-term storage, no aging, no damage by tearing, corrosion resistance, moth resistance and the like, and is the most important material for copying, writing, agreeing with writing and cosmetic beauty care in the future. The paper mulberry bark has the following characteristics: 1. heat preservation, water resistance, washing resistance, bacteriostasis and insect prevention; 2. the product is not sticky to skin after burning; 3. the cotton has the characteristics of flax, but has the softness of cotton, so that the application range is wider; 4. the super fiber paper mulberry tree can be used as paper making raw material and can also be used for manufacturing various artware.

At present, paper mulberry is less applied in the field of shoe making, and paper mulberry bark is not enough in tolerance and is coarse and easily hurt feet if being directly used for preparing soles or inclined planes. It is difficult to meet the requirement through simple improvement, and the curative effect of the paper mulberry needs to be better utilized and is a big reason for hindering the application of the paper mulberry. "A health-care cloth shoes of the homemade tree and its preparation method" of patent No. 201811264680.2, regard bark of paper mulberry as the main raw material, through the specific saline solution and alkali treatment first, extract and get the active ingredient, do not destroy cellulose substance at the same time, and then through adding the active ingredient of the hydroxy group of the inclusion content of alpha-chitosan; finally, under the action of the ethylene-vinyl acetate copolymer emulsion and the polyethylene glycol, the health-care sole embedding material with good toughness, wear resistance and high comfort is obtained. However, the main disadvantages of the alkali treatment are high cost and difficult recovery, and the waste liquid can cause environmental pollution; the extraction rate of the effective components is not high enough, and the utilization rate of the paper mulberry bark is still to be improved.

Ionic Liquids (ILs) are salts which are composed of positive ions and negative ions and are liquid at room temperature or use temperature, and are green solvents which have strong dissolving capacity, are non-volatile, have high thermal stability and can be designed. The ionic liquid has excellent performances in extraction and separation of food components, analysis and detection, physical property modification and the like. Research shows that the anions and cations in the ionic liquid contain different functional groups such as hydroxyl and the like to form hydrogen bonds, destroy the crystalline structure of the microcrystalline dietary fiber and enhance the solubility of the dietary fiber. Therefore, the ionic liquid has great potential for extracting effective components in the paper mulberry bark.

Disclosure of Invention

The invention aims to overcome at least one of the defects in the prior art and provides the cloth shoes which are high in comfort, strong in toughness, good in air permeability, sweat-proof and deodorant and remarkable in health care effect and the manufacturing method thereof. The purpose of the invention is realized based on the following technical scheme.

In one aspect of the invention, a manufacturing process of a cloth shoe with high comfort level is provided, which comprises the following steps:

s1, leaching: taking dried paper mulberry bark, crushing, adding an acidic ionic liquid aqueous solution, leaching for a period of time, and filtering to obtain a filtrate;

s2, concentration: adding a binder, a plasticizer, a thickening agent and a chelating agent into the obtained filtrate, heating, stirring and concentrating until the water content is 10-30 wt%, so as to obtain a concentrated solution;

s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 1-10 mm on the sole substrate, drying and solidifying the concentrated solution, and then arranging a cotton filling layer on the surface of the concentrated solution to obtain the sole;

s4, manufacturing cloth shoes: and sewing the vamp on the obtained sole to obtain the finished product of the cloth shoe.

2. The manufacturing process of cloth shoes with high comfort level according to claim 1, wherein the water content of the paper mulberry bark in step S1 is 5-30 wt%, and/or the paper mulberry bark is crushed and then screened with a 10-50 mesh screen.

Preferably, the acidic ionic liquid aqueous solution in step S1 specifically includes: 0.5-20 parts of acidic ionic liquid and 80-150 parts of water.

Preferably, the acidic ionic liquid in step S1 is sulfonic acid functionalized triethylamine ionic liquid, wherein the anion is AlC1₄ ^ˉ、HSO₄ ^ˉ、NO₃ ^ˉ、H₂PO₄ ^ˉ、BF₄ ^ˉ、PF₆ ^ˉ、CF₃CO₂ ^ˉOr CF₃SO₃ ^ˉ。

Preferably, the leaching process in step S1 is: the leaching temperature is 20-60 ℃, and the leaching time is 4-24 h.

Preferably, the leaching process in step S1 is: the ultrasonic frequency is 5-15 kHz, the ultrasonic temperature is 20-60 ℃, and the ultrasonic time is 2-10 h.

Preferably, the adhesive in step S2 includes one or more of ethylene-vinyl acetate copolymer emulsion, amino resin, vulcanized silicone rubber, and cyanoacrylate; and/or

Preferably, the plasticizer comprises one or more of citric acid esters, polyethylene glycols, phthalates.

Preferably, the thickener comprises one or more of methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, polyquaternium 1, polyquaternium 6, guar gum, xanthan gum, pectin, carrageenan, chitosan.

Preferably, the chelating agent comprises EDTA and/or disodium EDTA.

Preferably, the addition amount of the binder in the step S2 is 0.1-1 wt% of the mass of the concentrated solution, and/or the addition amount of the plasticizer is 0.1-1 wt% of the mass of the concentrated solution, and/or the addition amount of the thickener is 0.1-1 wt% of the mass of the concentrated solution, and/or the addition amount of the chelating agent is 0.02-0.2 wt% of the mass of the concentrated solution.

Preferably, the heating and stirring temperature in the step S2 is 40-70 ℃.

Preferably, the drying and curing in step S3 is drying and curing in natural ventilation; and/or

In the step S3, moxa and/or bamboo fiber is further provided in the cotton filling layer.

In another aspect of the invention, the cloth shoes with high comfort level are provided, and are manufactured by the manufacturing process.

The invention can obtain the following beneficial effects:

1. the acidic ionic liquid used in the invention has good biocompatibility and good catalytic activity, can improve the internal environment of paper mulberry bark, assist and promote the destruction of cell wall structure, convert insoluble fiber into soluble fiber, improve the extraction rate of cellulose, and simultaneously can not destroy the internal structure of the cellulose, so that the prepared cloth shoes have high comfort and strong toughness. In addition, leaching under acidic conditions is beneficial to the dissolution of the ingredients with medicinal effects in the paper mulberry bark, the dissolution rate of the medicinal ingredients is accelerated and improved, and the prepared cloth shoes have obvious health care effects. The invention can accelerate the dissolution and extraction of various active ingredients in paper mulberry bark and improve the bioavailability of the paper mulberry bark by acidic ionic liquid treatment.

2. The acidic ionic liquid used in the invention has the advantages of small dosage, high greening degree, no environmental pollution such as waste water and the like, high biocompatibility, no harm to human body, health and environmental protection.

3. The added binder, plasticizer, thickener and chelating agent have good binding and curing effects, and the prepared sole has strong wear resistance and toughness; meanwhile, the cellulose and the drug effect components form a certain spatial structure, so that the drug effect can be continuously and slowly exerted in multiple dimensions, the health care effect is good, and the comfort of the cloth shoes is improved.

4. The sole of the invention contains a large amount of abundant fibers, has good air permeability, prevents sweat and smells, and has high wearing comfort.

5. The manufacturing process disclosed by the invention is simple to operate, short in time consumption, high in efficiency, easy to industrialize and scale, and capable of being popularized and applied in a large scale.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

a manufacturing process of a comfortable cloth shoe comprises the following steps:

s1, leaching: pulverizing dried paper mulberry bark (water content of 5 wt%), sieving with 50 mesh sieve, and adding acidic ionic liquid aqueous solution ([ BsEt [)₃N][HSO₄]0.5 part of acidic ionic liquid and 100 parts of water), leaching for a period of time at a leaching temperature of 45 ℃ for 15 hours, and filtering to obtain a filtrate;

s2, concentration: adding 0.1 wt% of adhesive, 0.1 wt% of ethylene-vinyl acetate copolymer emulsion, 0.1 wt% of plasticizer, 0.1 wt% of thickening agent, 0.02 wt% of chelating agent and EDTA into the obtained filtrate, heating, stirring and concentrating at 40 ℃ until the water content is 30 wt% to obtain a concentrated solution;

s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 1mm on the sole base, placing the sole base in a natural ventilation position to dry and solidify the sole base, and then arranging a cotton filling layer on the surface of the sole base to obtain a sole;

s4, manufacturing cloth shoes: and sewing the vamp on the obtained sole to obtain the finished product of the cloth shoe.

Example 2:

a manufacturing process of a comfortable cloth shoe comprises the following steps:

s1, leaching: pulverizing dried paper mulberry bark (water content of 30 wt%), sieving with 10 mesh sieve, and adding acidic ionic liquid aqueous solution ([ BsEt [)₃N][AlC1₄]2 parts of acidic ionic liquid and 100 parts of water), leaching for a period of time at a leaching temperature of 25 ℃ for 24 hours, and filtering to obtain a filtrate;

s2, concentration: adding 0.5 wt% of binder, 0.5 wt% of amino resin, 0.5 wt% of vulcanized silicone rubber, 1 wt% of plasticizer polyethylene glycol-200, 0.5 wt% of thickener carboxymethyl cellulose, 0.5 wt% of polyquaternium 1 and 0.2 wt% of chelating agent EDTA disodium into the obtained filtrate, heating at 70 ℃, stirring and concentrating until the water content is 10 wt% to obtain a concentrated solution;

s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 10mm on the sole base, placing the sole base in a natural ventilation position to dry and solidify the sole base, and then arranging a cotton filling layer on the surface of the sole base to obtain a sole;

s4, manufacturing cloth shoes: and sewing the vamp on the obtained sole to obtain the finished product of the cloth shoe.

Example 3:

a manufacturing process of a comfortable cloth shoe comprises the following steps:

s1, leaching: pulverizing dried paper mulberry bark (water content of 15 wt%), sieving with 20 mesh sieve, and adding acidic ionic liquid aqueous solution ([ BsEt [)₃N][H₂PO₄]5 parts of acidic ionic liquid and 100 parts of water), leaching for a period of time at the leaching temperature of 55 ℃ for 8 hours, and filtering to obtain filtrate;

s2, concentration: adding 0.25 wt% of adhesive, 0.25 wt% of silicon sulfide rubber, 0.25 wt% of cyanoacrylate, 0.5 wt% of plasticizer, 0.25 wt% of thickener, 0.25 wt% of chitosan and 0.1 wt% of chelating agent EDTA into the obtained filtrate, heating at 50 ℃, stirring and concentrating until the water content is 20 wt% to obtain a concentrated solution;

s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 5mm on the sole substrate, placing the sole substrate in a natural ventilation position to dry and solidify the sole substrate, and then arranging a cotton filling layer with bamboo fibers inside the surface of the sole substrate to obtain the sole;

s4, manufacturing cloth shoes: and sewing the vamp on the obtained sole to obtain the finished product of the cloth shoe.

Example 4:

a manufacturing process of a comfortable cloth shoe comprises the following steps:

s1, leaching: pulverizing dried paper mulberry bark (water content is 10 wt%), sieving with 30 mesh sieve, and adding acidic ionic liquid aqueous solution ([ BsEt [)₃N][BF₄]8 parts of acidic ionic liquid and 100 parts of water), leaching for a period of time, wherein the leaching ultrasonic frequency is 5kHz, the ultrasonic temperature is 50 ℃, the leaching time is 8 hours, and filtering is carried out to obtain filtrate;

s2, concentration: adding 0.2 wt% of adhesive, 0.6 wt% of ethylene-vinyl acetate copolymer emulsion, 0.6 wt% of amino resin, 0.2 wt% of plasticizer, 0.2 wt% of polyethylene glycol-400, 0.2 wt% of thickening agent, 0.2 wt% of hydroxyethyl cellulose, 0.2 wt% of polyquaternary ammonium salt 6, 0.3 wt% of xanthan gum and 0.02 wt% of chelating agent EDTA, and 0.02 wt% of disodium EDTA into the obtained filtrate, heating, stirring and concentrating at 65 ℃ until the water content is 15 wt% to obtain a concentrated solution;

s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 3mm on the sole base, placing the sole base in a natural ventilation position to dry and solidify the sole base, and then arranging a cotton filling layer on the surface of the sole base to obtain a sole;

s4, manufacturing cloth shoes: and sewing the vamp on the obtained sole to obtain the finished product of the cloth shoe.

Example 5:

a manufacturing process of a comfortable cloth shoe comprises the following steps:

s1, leaching: pulverizing dried paper mulberry bark (water content of 20 wt%), sieving with 40 mesh sieve, and adding acidic ionic liquid aqueous solution ([ BsEt [)₃N][CF₃CO₂]15 parts of acidic ionic liquid and 100 parts of waterLeaching for a period of time, wherein the leaching ultrasonic frequency is 15kHz, the leaching ultrasonic temperature is 60 ℃, the leaching time is 2 hours, and filtering is carried out to obtain filtrate;

s2, concentration: adding 0.3 wt% of adhesive, 0.3 wt% of silicon sulfide rubber, 0.3 wt% of cyanoacrylate, 0.3 wt% of plasticizer, 0.3 wt% of polyethylene glycol-200, 0.3 wt% of phthalate, 0.3 wt% of thickener, 0.2 wt% of xanthan gum, 0.1 wt% of chitosan and 0.15 wt% of chelating agent EDTA into the obtained filtrate, heating and stirring at 45 ℃, and concentrating until the water content is 25 wt% to obtain a concentrated solution;

s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 8mm on the sole base, placing the sole base in a natural ventilation position to dry and solidify the sole base, and then arranging a cotton filling layer with moxa on the surface of the sole base to obtain the sole;

s4, manufacturing cloth shoes: and sewing the vamp on the obtained sole to obtain the finished product of the cloth shoe.

Example 6:

a manufacturing process of a comfortable cloth shoe comprises the following steps:

s1, leaching: pulverizing dried paper mulberry bark (water content 25 wt%), sieving with 30 mesh sieve, and adding acidic ionic liquid aqueous solution ([ BsEt [)₃N][CF₃SO₃]6 parts of acidic ionic liquid and 100 parts of water), leaching for a period of time, wherein the leaching ultrasonic frequency is 10kHz, the ultrasonic temperature is 40 ℃, the leaching time is 5 hours, and filtering is carried out to obtain filtrate;

s2, concentration: adding 0.1 wt% of adhesive, 0.1 wt% of vulcanized silicone rubber, 0.1 wt% of cyanoacrylate, 0.3 wt% of plasticizer, 0.3 wt% of citric acid ester, 0.3 wt% of polyethylene glycol-400, 0.2 wt% of phthalate, 0.1 wt% of thickener, 0.1 wt% of polyquaternium 6, 0.1 wt% of carrageenan and 0.12 wt% of EDTA disodium salt into the obtained filtrate, heating, stirring and concentrating at 55 ℃ until the water content is 18 wt% to obtain a concentrated solution;

s3, manufacturing the sole: covering a layer of concentrated solution with the thickness of 2.5mm on the sole substrate, placing the sole substrate in a natural ventilation position for drying and solidifying, and then arranging a cotton filling layer with moxa and bamboo fibers inside on the surface of the sole substrate to obtain the sole;

s4, manufacturing cloth shoes: and sewing the vamp on the obtained sole to obtain the finished product of the cloth shoe.

Comparative example 1:

step S1 is changed to: adding 20% saline solution, soaking for 48 hr, filtering, adding drinking water in an amount of 4 times of the weight of Broussonetia papyrifera bark, adjusting pH to 10, heating and refluxing for 4 hr, extracting twice, and filtering. The remaining steps and conditions were the same as in example 6.

Comparative example 2:

in step S2, no binder was added, and the remaining steps and conditions were the same as in example 6.

Comparative example 3:

in step S2, no binder or thickener was added, and the remaining steps and conditions were the same as in example 6.

Comparative example 4:

in step S2, no binder, plasticizer, or thickener was added, and the remaining steps and conditions were the same as in example 6.

Comparative example 5:

in step S2, no binder, plasticizer, thickener, and chelating agent were added, and the remaining steps and conditions were the same as in example 6.

The wear resistance and the curative effect of the cloth shoes prepared in the examples 1 to 6 and the comparative examples 1 to 5 are examined.

1. Investigation of wear resistance

2 pairs of cloth shoes made of 40 yards in each of examples 1 to 6 and comparative examples 1 to 5 were selected, 22 middle-aged persons (age 40 to 45 years) with weight 50 to 55kg and capable of trying on the 22 pairs of shoes were selected, each person took 10000 steps per day at an average speed, sole conditions were observed at 0/1/2/3/5 months (0 month, namely all the cloth shoe soles were smooth and without unevenness when worn), and the results are listed in table 1.

TABLE 1

As is clear from the results in Table 1, the alkaline extraction, without adding one or more of a binder, a plasticizer, a thickener and a chelating agent, has an influence on the toughness of the manufactured cloth shoe, and particularly, the toughness of comparative example 5 is the worst, and the sole of the shoe shows a concavity in all cases after wearing for 1 month. The results show that the cloth shoes of the preferred embodiment of the invention have high toughness.

2. Examination of therapeutic effects

The cloth shoes manufactured in 10 pairs of 40 yards in examples 1-6 and comparative examples 1-5 are selected from 110 old people with certain rheumatic arthritis pain in 60-65 years old, each person walks at a constant speed of 5000-6000 steps wearing shoes every day, the pain condition is inquired and the improvement condition is observed in 0/1/2/3/4 months, and the results are listed in table 2.

TABLE 2

As can be seen from the results in Table 2, the alkaline extraction, without adding one or more of a binder, a plasticizer, a thickener and a chelating agent, has an effect on the health care effect of the manufactured cloth shoe, especially the health care effect of comparative example 5 is the worst. The results show that the cloth shoes of the preferred embodiment of the invention have very obvious health care effect, especially the best health care effect of the embodiment 6, the arthritis of 7 persons is obviously improved after wearing for 1 month, and the arthritis of 10 persons is obviously improved after wearing for 2 months.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.