阅读说明：本技术 一种抗菌吸汗医用乳胶手套及其制备方法 (Antibacterial sweat-absorbent medical latex gloves and preparation method thereof ) 是由 江文养 于 2021-10-13 设计创作，主要内容包括：本发明属于医用乳胶手套技术领域,公开了一种抗菌吸汗医用乳胶手套及其制备方法,针对现有的乳胶手套不具有吸汗能力和杀菌能力的问题,其医用乳胶手套包括下重量份的原料：天然橡胶30-70份、羧基丁腈橡胶5-9份、纱布10-30份、防老剂10-30份,抗氧化剂10-30份、硫磺3-7份、脱脂棉30-70份、绵萆薢提取物5-9份、硫酸钙5-9份、氢氧化钾5-9份、稳定剂10-14份、抗裂剂10-14份。本发明制成的手套能够具有良好的吸汗和杀菌的能力,以此在医务人员佩戴时,能够及时的将医务人员手部产生的汗液及时吸附,所以能够保证乳胶手套与医务人员的手部保持贴合,因此具有良好的实用性。(The invention belongs to the technical field of medical latex gloves, and discloses an antibacterial sweat-absorbent medical latex glove and a preparation method thereof, aiming at the problem that the existing latex glove does not have sweat-absorbent capacity and sterilization capacity, the medical latex glove comprises the following raw materials in parts by weight: 30-70 parts of natural rubber, 5-9 parts of carboxylated nitrile rubber, 10-30 parts of gauze, 10-30 parts of anti-aging agent, 10-30 parts of antioxidant, 3-7 parts of sulfur, 30-70 parts of absorbent cotton, 5-9 parts of rhizoma dioscoreae septemlobae extract, 5-9 parts of calcium sulfate, 5-9 parts of potassium hydroxide, 10-14 parts of stabilizer and 10-14 parts of anti-cracking agent. The gloves prepared by the invention have good sweat absorbing and sterilizing capabilities, so that sweat generated by hands of medical staff can be timely absorbed when the gloves are worn by the medical staff, and the latex gloves can be kept to be attached to the hands of the medical staff, thereby having good practicability.)

1. The antibacterial sweat-absorbent medical latex gloves are characterized by comprising the following raw materials in parts by weight: 30-70 parts of natural rubber, 5-9 parts of carboxylated nitrile rubber, 10-30 parts of gauze, 10-30 parts of anti-aging agent, 10-30 parts of antioxidant, 3-7 parts of sulfur, 30-70 parts of absorbent cotton, 5-9 parts of rhizoma dioscoreae septemlobae extract, 5-9 parts of calcium sulfate, 5-9 parts of potassium hydroxide, 10-14 parts of stabilizer and 10-14 parts of anti-cracking agent.

2. The antimicrobial sweat-absorbing medical latex glove of claim 1, wherein the antioxidant is N-phenyl- α -aniline and the antioxidant is paraffin wax.

3. The antimicrobial sweat-absorbent medical latex glove of claim 1, wherein the stabilizer is nano cerium oxide and the anti-cracking agent is an aqueous gel.

4. A preparation method of the antibacterial sweat-absorbent medical latex gloves is characterized by comprising the following steps:

s1: firstly, drying natural rubber particles and carboxyl nitrile rubber particles;

s2: after the step S1 is finished, natural rubber and carboxyl nitrile rubber can be put into a hot melting kettle for hot melting;

s3: sequentially adding an anti-aging agent, an antioxidant and sulfur step by step during the hot melting of natural rubber and carboxyl nitrile rubber;

s4: after the addition of sulfur is finished, the hot melting of the natural rubber and the carboxyl nitrile rubber can be finished at intervals of 30min, and then the synthetic solution of the natural rubber and the carboxyl nitrile rubber can be injected into a thermoplastic machine;

s5: heating the rubber glove mold;

s6: injecting synthetic solution of natural rubber and carboxyl nitrile rubber into the heated rubber glove mold;

s7: after the injection is finished, the mould is moved into an air box for cooling, so that the latex gloves are quickly cooled and shaped;

s8: preparing aqueous solution from the rhizoma dioscoreae septemlobae extract and pure water, putting gauze and absorbent cotton into the aqueous solution of the rhizoma dioscoreae septemlobae extract for soaking, and putting calcium sulfate and potassium hydroxide into the rhizoma dioscoreae septemlobae extract in sequence in the soaking process so as to enhance the antibacterial capacity of the gauze and the absorbent cotton;

s9: putting the stabilizer and the anti-cracking agent into water to prepare a protective solution, and then putting the cooled latex gloves into the protective solution to enhance the wear resistance of the latex gloves;

s10: after latex gloves, gauze and absorbent cotton are soaked, the latex gloves, the gauze and the absorbent cotton can be taken out in sequence at the moment, then the gauze can be bonded on the inner wall of the latex gloves, the anti-skidding capacity of the latex gloves is enhanced, the absorbent cotton is bonded on the gauze, and sweat on hands of medical staff can be adsorbed in time by using the absorbent cotton.

5. The method for preparing the antibacterial and sweat-absorbent medical latex gloves according to claim 4, wherein in S2, a stirrer is arranged in a hot melting kettle, so that when natural rubber and carboxylated nitrile rubber are subjected to hot melting, the carboxylated nitrile rubber and the natural rubber can be uniformly mixed, the natural rubber is put in one step, and the carboxylated nitrile rubber is put in steps.

6. The method for preparing the antibacterial sweat-absorbent medical latex gloves according to claim 4, wherein in the step S3, the adding proportion of the anti-aging agent, the antioxidant and the sulfur is 1: 1:0.2, and the anti-aging agent, the antioxidant and the sulfur are added step by step with 15min interval.

7. The method for preparing antibacterial sweat-absorbing medical latex gloves according to claim 4, wherein in S8, the ratio of rhizoma Dioscoreae Septemlobae extract to water is 2.5:100, and after the rhizoma Dioscoreae Septemlobae extract is poured into water, the water can be heated until the water temperature reaches 45 ℃.

8. The method for preparing antibacterial sweat-absorbent medical latex gloves according to claim 4, wherein in the step S9, the ratio of the stabilizer to the anti-cracking agent to the water is 2.5:2.5: 100.

Technical Field

The invention relates to the technical field of medical latex gloves, in particular to an antibacterial sweat-absorbent medical latex glove and a preparation method thereof.

Background

The latex glove is one of gloves, which is different from general gloves and is made of latex. Can be used in the industries of families, industry, medical treatment, beauty treatment and the like, and is a necessary hand protection article. The latex gloves are processed by adopting natural latex and other fine additives, and the products are comfortable to wear after being subjected to special surface treatment, and have wide application in industrial and agricultural production, medical treatment and daily life.

The latex gloves have good sealing performance, so that when medical staff wear the latex gloves for a long time, certain sweat is prevented from being generated and cannot be absorbed in time, the latex gloves cannot be completely attached to the hands of the medical staff, and the normal work of the medical staff is influenced.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides an antibacterial sweat-absorbent medical latex glove and a preparation method thereof.

The invention provides an antibacterial sweat-absorbent medical latex glove which comprises the following raw materials in parts by weight: 30-70 parts of natural rubber, 5-9 parts of carboxylated nitrile rubber, 10-30 parts of gauze, 10-30 parts of anti-aging agent, 10-30 parts of antioxidant, 3-7 parts of sulfur, 30-70 parts of absorbent cotton, 5-9 parts of rhizoma dioscoreae septemlobae extract, 5-9 parts of calcium sulfate, 5-9 parts of potassium hydroxide, 10-14 parts of stabilizer and 10-14 parts of anti-cracking agent.

Preferably, the anti-aging agent is N-phenyl-alpha-aniline, and the antioxidant is paraffin.

Preferably, the stabilizing agent is nano cerium oxide, and the anti-cracking agent is water-based glue.

A preparation method of antibacterial sweat-absorbent medical latex gloves comprises the following steps:

s1: firstly, drying natural rubber particles and carboxyl nitrile rubber particles;

s2: after the step S1 is finished, natural rubber and carboxyl nitrile rubber can be put into a hot melting kettle for hot melting;

s3: sequentially adding an anti-aging agent, an antioxidant and sulfur step by step during the hot melting of natural rubber and carboxyl nitrile rubber;

s4: after the addition of sulfur is finished, the hot melting of the natural rubber and the carboxyl nitrile rubber can be finished at intervals of 30min, and then the synthetic solution of the natural rubber and the carboxyl nitrile rubber can be injected into a thermoplastic machine;

s5: heating the rubber glove mold;

s6: injecting synthetic solution of natural rubber and carboxyl nitrile rubber into the heated rubber glove mold;

s7: after the injection is finished, the mould is moved into an air box for cooling, so that the latex gloves are quickly cooled and shaped;

s8: preparing aqueous solution from the rhizoma dioscoreae septemlobae extract and pure water, putting gauze and absorbent cotton into the aqueous solution of the rhizoma dioscoreae septemlobae extract for soaking, and putting calcium sulfate and potassium hydroxide into the rhizoma dioscoreae septemlobae extract in sequence in the soaking process so as to enhance the antibacterial capacity of the gauze and the absorbent cotton;

s9: putting the stabilizer and the anti-cracking agent into water to prepare a protective solution, and then putting the cooled latex gloves into the protective solution to enhance the wear resistance of the latex gloves;

s10: after latex gloves, gauze and absorbent cotton are soaked, the latex gloves, the gauze and the absorbent cotton can be taken out in sequence at the moment, then the gauze can be bonded on the inner wall of the latex gloves, the anti-skidding capacity of the latex gloves is enhanced, the absorbent cotton is bonded on the gauze, and sweat on hands of medical staff can be adsorbed in time by using the absorbent cotton.

Preferably, in S2, a stirrer is disposed in the hot melting kettle, so that when natural rubber and carboxylated nitrile rubber are hot-melted, the carboxylated nitrile rubber and the natural rubber can be uniformly mixed, the natural rubber is put in one step, and the carboxylated nitrile rubber is put in steps.

Preferably, in S3, the adding ratio of the antioxidant to the sulfur is 1: 1:0.2, and the anti-aging agent, the antioxidant and the sulfur are added step by step with 15min interval.

Preferably, in S8, the ratio of the dioscorea tokoro to the water is 2.5:100, and after the dioscorea tokoro is poured into the water, the water is heated until the water temperature reaches 45 ℃.

Preferably, in the step S9, the ratio of the stabilizer to the anti-cracking agent to the water is 2.5:2.5: 100.

The invention has the beneficial effects that:

1. according to the invention, the natural rubber and the carboxyl nitrile rubber are mixed and melted, so that the fluidity of the natural rubber can be enhanced, the plasticity of the natural rubber is enhanced when latex gloves are conveniently manufactured, and the problem of bubbles is avoided when the supported latex is easily injected into a latex glove mold.

2. In the invention, during the mixing and hot melting of natural rubber and carboxyl nitrile rubber, the anti-aging agent, the antioxidant and sulfur are added in sequence, the anti-aging agent can prevent the latex gloves from hardening in the using process, the antioxidant can enhance the stability of the latex gloves, so that the latex gloves are not easy to generate decomposition reaction, and the sulfur can provide certain antibacterial capacity for the latex gloves, so that the latex gloves have good use stability when being made into the latex gloves;

3. according to the invention, the gauze and the absorbent cotton are soaked by the aqueous solution containing the yam rhizome extract, the calcium sulfate and the potassium hydroxide, so that the gauze and the absorbent cotton have good antibacterial capability and good sweat absorption capability, and the sterilization can be realized in time after the absorbent cotton adsorbs sweat generated by hands of medical personnel, so that the medical personnel can be protected well;

4. in the invention, the latex gloves are soaked by using the aqueous solution prepared from the stabilizing agent and the anti-cracking agent, so that the surfaces of the latex gloves can be ensured to have good protective coatings, and the latex gloves are not easy to decompose, crack and the like in the later use process.

The gloves prepared by the invention have good sweat absorbing and sterilizing capabilities, so that sweat generated by hands of medical staff can be timely absorbed when the gloves are worn by the medical staff, and the latex gloves can be kept to be attached to the hands of the medical staff, thereby having good practicability.

Drawings

FIG. 1 is a structural flow chart of a method for manufacturing the antibacterial sweat-absorbent medical latex gloves.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.

Example one

Referring to fig. 1, this embodiment provides an antibacterial sweat-absorbent medical latex glove, which includes the following raw materials in parts by weight: 30 parts of natural rubber, 5 parts of carboxylated nitrile rubber, 10 parts of gauze, 10 parts of an anti-aging agent, 10 parts of an antioxidant, 3 parts of sulfur, 30 parts of absorbent cotton, 5 parts of a yam rhizome extract, 5 parts of calcium sulfate, 5 parts of potassium hydroxide, 10 parts of a stabilizer and 10 parts of an anti-cracking agent.

The embodiment provides a preparation method of an antibacterial sweat-absorbent medical latex glove, which comprises the following steps:

s1: firstly, drying natural rubber particles and carboxyl nitrile rubber particles;

s2: after the step S1 is finished, natural rubber and carboxyl nitrile rubber can be put into a hot melting kettle for hot melting;

s3: sequentially adding an anti-aging agent, an antioxidant and sulfur step by step during the hot melting of natural rubber and carboxyl nitrile rubber;

s4: after the addition of sulfur is finished, the hot melting of the natural rubber and the carboxyl nitrile rubber can be finished at intervals of 30min, and then the synthetic solution of the natural rubber and the carboxyl nitrile rubber can be injected into a thermoplastic machine;

s5: heating the rubber glove mold;

s6: injecting synthetic solution of natural rubber and carboxyl nitrile rubber into the heated rubber glove mold;

s7: after the injection is finished, the mould is moved into an air box for cooling, so that the latex gloves are quickly cooled and shaped;

s8: preparing aqueous solution from the rhizoma dioscoreae septemlobae extract and pure water, putting gauze and absorbent cotton into the aqueous solution of the rhizoma dioscoreae septemlobae extract for soaking, and putting calcium sulfate and potassium hydroxide into the rhizoma dioscoreae septemlobae extract in sequence in the soaking process so as to enhance the antibacterial capacity of the gauze and the absorbent cotton;

s9: putting the stabilizer and the anti-cracking agent into water to prepare a protective solution, and then putting the cooled latex gloves into the protective solution to enhance the wear resistance of the latex gloves;

s10: after latex gloves, gauze and absorbent cotton are soaked, the latex gloves, the gauze and the absorbent cotton can be taken out in sequence at the moment, then the gauze can be bonded on the inner wall of the latex gloves, the anti-skidding capacity of the latex gloves is enhanced, the absorbent cotton is bonded on the gauze, and sweat on hands of medical staff can be adsorbed in time by using the absorbent cotton.

Example two

Referring to fig. 1, this embodiment provides an antibacterial sweat-absorbent medical latex glove, which includes the following raw materials in parts by weight: 40 parts of natural rubber, 6 parts of carboxylated nitrile rubber, 15 parts of gauze, 15 parts of an anti-aging agent, 15 parts of an antioxidant, 4 parts of sulfur, 40 parts of absorbent cotton, 6 parts of a yam rhizome extract, 6 parts of calcium sulfate, 6 parts of potassium hydroxide, 11 parts of a stabilizer and 11 parts of an anti-cracking agent.

The embodiment provides a preparation method of an antibacterial sweat-absorbent medical latex glove, which comprises the following steps:

s1: firstly, drying natural rubber particles and carboxyl nitrile rubber particles;

s2: after the step S1 is finished, natural rubber and carboxyl nitrile rubber can be put into a hot melting kettle for hot melting;

s3: sequentially adding an anti-aging agent, an antioxidant and sulfur step by step during the hot melting of natural rubber and carboxyl nitrile rubber;

s4: after the addition of sulfur is finished, the hot melting of the natural rubber and the carboxyl nitrile rubber can be finished at intervals of 30min, and then the synthetic solution of the natural rubber and the carboxyl nitrile rubber can be injected into a thermoplastic machine;

s5: heating the rubber glove mold;

s6: injecting synthetic solution of natural rubber and carboxyl nitrile rubber into the heated rubber glove mold;

s7: after the injection is finished, the mould is moved into an air box for cooling, so that the latex gloves are quickly cooled and shaped;

s8: preparing aqueous solution from the rhizoma dioscoreae septemlobae extract and pure water, putting gauze and absorbent cotton into the aqueous solution of the rhizoma dioscoreae septemlobae extract for soaking, and putting calcium sulfate and potassium hydroxide into the rhizoma dioscoreae septemlobae extract in sequence in the soaking process so as to enhance the antibacterial capacity of the gauze and the absorbent cotton;

s9: putting the stabilizer and the anti-cracking agent into water to prepare a protective solution, and then putting the cooled latex gloves into the protective solution to enhance the wear resistance of the latex gloves;

s10: after latex gloves, gauze and absorbent cotton are soaked, the latex gloves, the gauze and the absorbent cotton can be taken out in sequence at the moment, then the gauze can be bonded on the inner wall of the latex gloves, the anti-skidding capacity of the latex gloves is enhanced, the absorbent cotton is bonded on the gauze, and sweat on hands of medical staff can be adsorbed in time by using the absorbent cotton.

EXAMPLE III

Referring to fig. 1, this embodiment provides an antibacterial sweat-absorbent medical latex glove, which includes the following raw materials in parts by weight: 50 parts of natural rubber, 7 parts of carboxylated nitrile rubber, 20 parts of gauze, 20 parts of anti-aging agent, 20 parts of antioxidant, 5 parts of sulfur, 50 parts of absorbent cotton, 7 parts of rhizoma dioscoreae septemlobae extract, 7 parts of calcium sulfate, 7 parts of potassium hydroxide, 12 parts of stabilizer and 12 parts of anti-cracking agent.

The embodiment provides a preparation method of an antibacterial sweat-absorbent medical latex glove, which comprises the following steps:

s1: firstly, drying natural rubber particles and carboxyl nitrile rubber particles;

s2: after the step S1 is finished, natural rubber and carboxyl nitrile rubber can be put into a hot melting kettle for hot melting;

s3: sequentially adding an anti-aging agent, an antioxidant and sulfur step by step during the hot melting of natural rubber and carboxyl nitrile rubber;

s4: after the addition of sulfur is finished, the hot melting of the natural rubber and the carboxyl nitrile rubber can be finished at intervals of 30min, and then the synthetic solution of the natural rubber and the carboxyl nitrile rubber can be injected into a thermoplastic machine;

s5: heating the rubber glove mold;

s6: injecting synthetic solution of natural rubber and carboxyl nitrile rubber into the heated rubber glove mold;

s7: after the injection is finished, the mould is moved into an air box for cooling, so that the latex gloves are quickly cooled and shaped;

s8: preparing aqueous solution from the rhizoma dioscoreae septemlobae extract and pure water, putting gauze and absorbent cotton into the aqueous solution of the rhizoma dioscoreae septemlobae extract for soaking, and putting calcium sulfate and potassium hydroxide into the rhizoma dioscoreae septemlobae extract in sequence in the soaking process so as to enhance the antibacterial capacity of the gauze and the absorbent cotton;

s9: putting the stabilizer and the anti-cracking agent into water to prepare a protective solution, and then putting the cooled latex gloves into the protective solution to enhance the wear resistance of the latex gloves;

s10: after latex gloves, gauze and absorbent cotton are soaked, the latex gloves, the gauze and the absorbent cotton can be taken out in sequence at the moment, then the gauze can be bonded on the inner wall of the latex gloves, the anti-skidding capacity of the latex gloves is enhanced, the absorbent cotton is bonded on the gauze, and sweat on hands of medical staff can be adsorbed in time by using the absorbent cotton.

Example four

Referring to fig. 1, this embodiment provides an antibacterial sweat-absorbent medical latex glove, which includes the following raw materials in parts by weight: 60 parts of natural rubber, 8 parts of carboxylated nitrile rubber, 25 parts of gauze, 25 parts of an anti-aging agent, 25 parts of an antioxidant, 6 parts of sulfur, 60 parts of absorbent cotton, 8 parts of a yam rhizome extract, 8 parts of calcium sulfate, 8 parts of potassium hydroxide, 13 parts of a stabilizer and 13 parts of an anti-cracking agent.

The embodiment provides a preparation method of an antibacterial sweat-absorbent medical latex glove, which comprises the following steps:

s1: firstly, drying natural rubber particles and carboxyl nitrile rubber particles;

s2: after the step S1 is finished, natural rubber and carboxyl nitrile rubber can be put into a hot melting kettle for hot melting;

s3: sequentially adding an anti-aging agent, an antioxidant and sulfur step by step during the hot melting of natural rubber and carboxyl nitrile rubber;

s4: after the addition of sulfur is finished, the hot melting of the natural rubber and the carboxyl nitrile rubber can be finished at intervals of 30min, and then the synthetic solution of the natural rubber and the carboxyl nitrile rubber can be injected into a thermoplastic machine;

s5: heating the rubber glove mold;

s6: injecting synthetic solution of natural rubber and carboxyl nitrile rubber into the heated rubber glove mold;

s7: after the injection is finished, the mould is moved into an air box for cooling, so that the latex gloves are quickly cooled and shaped;

s8: preparing aqueous solution from the rhizoma dioscoreae septemlobae extract and pure water, putting gauze and absorbent cotton into the aqueous solution of the rhizoma dioscoreae septemlobae extract for soaking, and putting calcium sulfate and potassium hydroxide into the rhizoma dioscoreae septemlobae extract in sequence in the soaking process so as to enhance the antibacterial capacity of the gauze and the absorbent cotton;

s9: putting the stabilizer and the anti-cracking agent into water to prepare a protective solution, and then putting the cooled latex gloves into the protective solution to enhance the wear resistance of the latex gloves;

s10: after latex gloves, gauze and absorbent cotton are soaked, the latex gloves, the gauze and the absorbent cotton can be taken out in sequence at the moment, then the gauze can be bonded on the inner wall of the latex gloves, the anti-skidding capacity of the latex gloves is enhanced, the absorbent cotton is bonded on the gauze, and sweat on hands of medical staff can be adsorbed in time by using the absorbent cotton.

EXAMPLE five

Referring to fig. 1, this embodiment provides an antibacterial sweat-absorbent medical latex glove, which includes the following raw materials in parts by weight: 70 parts of natural rubber, 9 parts of carboxylated nitrile rubber, 30 parts of gauze, 30 parts of anti-aging agent, 30 parts of antioxidant, 7 parts of sulfur, 70 parts of absorbent cotton, 9 parts of rhizoma dioscoreae septemlobae extract, 9 parts of calcium sulfate, 9 parts of potassium hydroxide, 14 parts of stabilizer and 14 parts of anti-cracking agent.

The embodiment provides a preparation method of an antibacterial sweat-absorbent medical latex glove, which comprises the following steps:

s1: firstly, drying natural rubber particles and carboxyl nitrile rubber particles;

s2: after the step S1 is finished, natural rubber and carboxyl nitrile rubber can be put into a hot melting kettle for hot melting;

s3: sequentially adding an anti-aging agent, an antioxidant and sulfur step by step during the hot melting of natural rubber and carboxyl nitrile rubber;

s4: after the addition of sulfur is finished, the hot melting of the natural rubber and the carboxyl nitrile rubber can be finished at intervals of 30min, and then the synthetic solution of the natural rubber and the carboxyl nitrile rubber can be injected into a thermoplastic machine;

s5: heating the rubber glove mold;

s6: injecting synthetic solution of natural rubber and carboxyl nitrile rubber into the heated rubber glove mold;

s7: after the injection is finished, the mould is moved into an air box for cooling, so that the latex gloves are quickly cooled and shaped;

s8: preparing aqueous solution from the rhizoma dioscoreae septemlobae extract and pure water, putting gauze and absorbent cotton into the aqueous solution of the rhizoma dioscoreae septemlobae extract for soaking, and putting calcium sulfate and potassium hydroxide into the rhizoma dioscoreae septemlobae extract in sequence in the soaking process so as to enhance the antibacterial capacity of the gauze and the absorbent cotton;

s9: putting the stabilizer and the anti-cracking agent into water to prepare a protective solution, and then putting the cooled latex gloves into the protective solution to enhance the wear resistance of the latex gloves;

s10: after latex gloves, gauze and absorbent cotton are soaked, the latex gloves, the gauze and the absorbent cotton can be taken out in sequence at the moment, then the gauze can be bonded on the inner wall of the latex gloves, the anti-skidding capacity of the latex gloves is enhanced, the absorbent cotton is bonded on the gauze, and sweat on hands of medical staff can be adsorbed in time by using the absorbent cotton.

Experimental data for latex gloves made in examples one through five are shown in the following Table:

as can be seen from the above table, the latex gloves of the present invention have significantly improved sweat absorbing and sterilizing abilities, and the fourth embodiment is the best embodiment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.