阅读说明：本技术 一种性能优异面料及在服装领域的应用 (Fabric with excellent performance and application thereof in field of clothes ) 是由 陈丽玉 于 2020-12-24 设计创作，主要内容包括：本发明提供了一种性能优异面料及在服装领域的应用。原料包括莱赛尔纤维和棉纤维,莱赛尔纤维占比为60-70％,棉纤维占比为30-35％。本发明制得的面料不仅光泽自然、手感滑润、透湿性、透气性好,而且色牢度≥3级,可分解致癌芳香胺染料≤20mg/kg,是一种性能极为优异的面料,可广泛应用于服装领域。(The invention provides a fabric with excellent performance and application thereof in the field of clothing. The raw materials comprise Lyocell fiber and cotton fiber, wherein the proportion of the Lyocell fiber is 60-70%, and the proportion of the cotton fiber is 30-35%. The fabric prepared by the invention has natural luster, smooth hand feeling, good moisture permeability and air permeability, has the color fastness of more than or equal to 3 grade, can decompose carcinogenic aromatic amine dye to be less than or equal to 20mg/kg, is extremely excellent in performance, and can be widely applied to the field of clothing.)

1. The fabric with excellent performance is prepared from the raw materials of lyocell fibers and cotton fibers, and is characterized in that the lyocell fibers account for 60-70% and the cotton fibers account for 30-35% in combination with official moisture regain percentage.

2. The fabric with excellent performance according to claim 1, wherein the lyocell fibers are modified lyocell fibers, the cotton fibers are modified cotton fibers, and the fabric is prepared by blending the modified lyocell fibers and the modified cotton fibers.

3. The fabric with excellent performance as claimed in claim 2, wherein the preparation method of the modified lyocell fiber and the modified cotton fiber comprises the following steps:

1) opening, removing impurities and carding lyocell fibers and cotton fibers;

2) preparing a modified solution, immersing the treated lyocell fibers and cotton fibers in the modified solution, and washing and drying the lyocell fibers and the cotton fibers by using clean water after the immersion.

4. The fabric with excellent performance according to claim 3, wherein the modified solution in the step 2) is an amino polysiloxane solution, methyl siloxane is mixed with a catalyst, a coupling agent is added after the reaction is finished to continue the reaction, and an end capping agent is added at the later stage of the reaction to obtain the amino polysiloxane solution.

5. The fabric with excellent performance according to claim 4, wherein the coupling agent is an amino coupling agent compounded with a long-chain coupling agent.

6. The fabric with excellent performance, according to claim 4, is characterized in that the amino polysiloxane solution is a cationic amphiphilic amino polysiloxane solution, and the cationic amphiphilic amino polysiloxane solution is prepared through a quaternization reaction.

7. The fabric with excellent performance as claimed in claim 2, wherein the fabric obtained by blending is dyed: and soaking the fabric prepared by blending into a dye vat, dyeing with natural dye, washing with water after dyeing, and drying to obtain the dyed fabric.

8. The fabric with excellent performance according to claim 7, wherein the dyed fabric is subjected to color fixing: putting the mixture into titanium dioxide sol, soaking for two times, and then washing and drying.

9. The fabric with excellent performance, according to claim 8, is characterized in that the titanium dioxide sol is prepared by the following steps: adding absolute ethyl alcohol: titanyl sulfate: deionized water according to a molar ratio of 20: 12: 2 mixing and stirring, adding sodium carbonate solution for reaction, adding mixed solution of acetic acid and polyethylene glycol, and continuously stirring to obtain the titanium dioxide sol.

10. The application of the fabric with excellent performance according to claim 1 in the field of clothing.

Technical Field

The invention relates to the field of clothes, in particular to a fabric with excellent performance and application thereof in the field of clothes.

Background

Lyocell is a new type of man-made fiber, having many of the advantages of other fibers, and is a regenerated cellulose fiber. The fabric has the comfort of cotton fiber, moisture absorption and air permeability, silky feeling and luster of real silk and better spinnability; it is widely used in the textile field and is an ideal clothing fiber. The lyocell fiber is usually dyed by synthetic dye, but the prepared fabric has high content of decomposable carcinogenic aromatic amine dye and high harm to human health. However, when lyocell fibers are dyed with natural dyes, the natural dyes have weak affinity with lyocell fibers, poor reactivity, low dye uptake and low color fastness.

The cotton fiber is porous fiber, has strong hygroscopicity, contains a large amount of hydrophilic structures in molecules, has good warmth retention property and is comfortable to wear. The invention provides the fabric which is blended by the lyocell fibers and the cotton fibers, has the excellent performances of the lyocell fibers and the cotton fibers, and has natural luster and comfortable wearing; the color fastness properties are also extremely excellent.

Disclosure of Invention

In order to solve the technical problems, the invention provides a fabric with excellent performance in a first aspect, and raw materials comprise lyocell fibers and cotton fibers, and the fabric is characterized in that the content of the lyocell fibers is 60-70% and the content of the cotton fibers is 30-35% in combination with official moisture regain percentage.

As a preferable technical scheme, the lyocell fiber is modified lyocell fiber, the cotton fiber is modified cotton fiber, and the fabric is prepared by blending the modified lyocell fiber and the modified cotton fiber.

As a preferable technical scheme, the preparation method of the modified lyocell fiber and the modified cotton fiber comprises the following steps:

1) opening, removing impurities and carding lyocell fibers and cotton fibers;

2) preparing a modified solution, immersing the treated lyocell fibers and cotton fibers in the modified solution, and washing and drying the lyocell fibers and the cotton fibers by using clean water after the immersion.

As a preferable technical scheme, the modified solution in the step 2) is an amino polysiloxane solution, methyl siloxane is mixed with a catalyst, a coupling agent is added after the reaction is finished to continue the reaction, and an end-capping agent is added at the later stage of the reaction to prepare the amino polysiloxane solution.

The mass percentage concentration of the modified solution is 5%, and the mass percentage concentration of the methyl siloxane: catalyst: coupling agent: the mass ratio of the end capping agent is 30-40: 1-2: 10-20: 1-2.

As a preferable technical scheme, the coupling agent is an amino coupling agent and a long-chain coupling agent which are compounded in a mass ratio of (10-15): 5.

as a preferable technical scheme, the amino polysiloxane solution is a cationic amphiphilic amino polysiloxane solution, and the cationic amphiphilic amino polysiloxane solution is prepared by quaternization reaction of the amino polysiloxane solution.

As a preferred technical scheme, the fabric prepared by blending is dyed: and soaking the fabric prepared by blending into a dye vat, dyeing with natural dye, washing with water after dyeing, and drying to obtain the dyed fabric.

As a preferred technical scheme, the dye in the dyeing process is a natural dye, and the natural dye comprises one or more of indigo, gardenia jasminoides, lithospermum, crocus sativus, rime blue and Taier red violet.

As a preferred technical scheme, the dyed fabric is subjected to color fixation: putting the mixture into titanium dioxide sol, soaking for two times, and then washing and drying.

As a preferred technical solution, the titanium dioxide sol is prepared by the following steps: adding absolute ethyl alcohol: titanyl sulfate: deionized water according to a molar ratio of 20: 12: 2 mixing and stirring, adding sodium carbonate solution for reaction, adding mixed solution of acetic acid and polyethylene glycol, and continuously stirring to obtain the titanium dioxide sol.

The mixed solution of acetic acid and polyethylene glycol is acetic acid: polyethylene glycol: the volume ratio of the deionized water is 3-4: 2-8: 1.

the second aspect of the invention provides an application of the fabric with excellent performance in the field of clothing.

Has the advantages that: the fabric with excellent performance is prepared from the lyocell fibers and the cotton fibers, and has natural luster, smooth hand feeling, high strength, basically no shrinkage, good moisture permeability and good air permeability; the color fastness to washing is more than or equal to 3 grades, the color fastness to perspiration is more than or equal to 3 grades, the color fastness to rubbing (dry) is more than or equal to 3 grades, and the decomposable carcinogenic aromatic amine dye is less than or equal to 20 mg/kg.

Detailed Description

In order to solve the problems, the invention provides a fabric with excellent performance, which comprises raw materials of lyocell fibers and cotton fibers, wherein the lyocell fibers account for 60-70% and the cotton fibers account for 30-35% in combination with official moisture regain percentage.

As a preferable technical scheme, the lyocell fiber is modified lyocell fiber, the cotton fiber is modified cotton fiber, and the fabric is prepared by blending the modified lyocell fiber and the modified cotton fiber.

As a preferable technical scheme, the preparation method of the modified lyocell fiber and the modified cotton fiber comprises the following steps:

1) opening, removing impurities and carding lyocell fibers and cotton fibers;

2) preparing a modified solution, immersing the treated lyocell fibers and cotton fibers in the modified solution, washing with clear water and drying in the air after immersion, wherein the immersion time is 2-3h and the temperature is 30-40 ℃.

As a preferable technical scheme, the modified solution in the step 2) is an amino polysiloxane solution, methyl siloxane and a catalyst are mixed, the reaction temperature is 120 ℃, the reaction time is 1.5h, a coupling agent is added under the vacuum condition after the reaction is finished to continue the reaction, an end capping agent is added at the later stage of the reaction to prepare the amino polysiloxane solution, the reaction time is 4h, and the reaction pressure is 0.02 MPa.

The mass percentage concentration of the modified solution is 5%, and the mass percentage concentration of the methyl siloxane: catalyst: coupling agent: the mass ratio of the end capping agent is 30-40: 1-2: 10-20: 1-2.

As a preferable technical scheme, the coupling agent is an amino coupling agent and a long-chain coupling agent which are compounded in a mass ratio of (10-15): 5.

more preferably, the amino polysiloxane solution is a cationic amphiphilic amino polysiloxane solution, and the amino polysiloxane solution is subjected to quaternization reaction to obtain the cationic amphiphilic amino polysiloxane solution.

As a preferred technical scheme, the fabric prepared by blending is dyed: and immersing the blended fabric into a dye vat for dyeing by using natural dye, washing and drying after dyeing to obtain the dyed fabric, wherein the dyeing temperature is 70-80 ℃, the dyeing time is 1-1.5h, and the bath ratio is 1: 30-50.

As a preferred technical scheme, the dye in the dyeing process is a natural dye, and the natural dye comprises one or more of indigo, gardenia jasminoides, lithospermum, crocus sativus, rime blue and Taier red violet.

As an optimized technical scheme, the dyed fabric is subjected to color fixation: soaking in titanium dioxide sol for two times, washing with water, and oven drying at 100 deg.C for 5-8 min; the baking temperature is 140-150 ℃, and the baking time is 5-7 min.

As a preferred technical solution, the titanium dioxide sol is prepared by the following steps: adding absolute ethyl alcohol: titanyl sulfate: deionized water according to a molar ratio of 20: 12: 2, mixing and stirring, adding a sodium carbonate solution to react until the pH is more than 7, then adding a mixed solution of acetic acid and polyethylene glycol until the pH is less than 7, and continuously stirring to obtain titanium dioxide sol, wherein the mixed solution of acetic acid and polyethylene glycol is acetic acid: polyethylene glycol: the volume ratio of the deionized water is 3-4: 2-8: 1.

as a preferred aspect, the second aspect of the present invention provides the use of an excellent fabric in the field of garments including but not limited to blouses, cardigans, vests, shirts, skirts, pants.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, the starting materials used are all commercially available, unless otherwise specified.

Examples

Example 1

The fabric with excellent performance comprises raw materials of lyocell fibers and cotton fibers, wherein the lyocell fibers account for 68% and the cotton fibers account for 32% in combination with official moisture regain percentage.

The lyocell fiber is modified lyocell fiber, the cotton fiber is modified cotton fiber, and the fabric is prepared by blending the modified lyocell fiber and the modified cotton fiber.

The preparation method of the modified lyocell fiber and the modified cotton fiber comprises the following steps:

1) opening, removing impurities and carding lyocell fibers and cotton fibers;

2) preparing a modified solution, immersing the treated lyocell fibers and cotton fibers in the modified solution, washing with clear water and drying in the air after immersion, wherein the immersion time is 2.5h and the temperature is 35 ℃.

The modified solution in the step 2) is a cationic amphiphilic amino polysiloxane solution.

Mixing methyl siloxane with a catalyst, wherein the reaction temperature is 120 ℃, the reaction time is 1.5h, adding a coupling agent under a vacuum condition after the reaction is finished, continuing the reaction, adding an end-capping agent at the later stage of the reaction to prepare an amino polysiloxane solution, wherein the reaction time is 4h, and the reaction pressure is 0.02 MPa.

And carrying out quaternization reaction on the amino polysiloxane solution to obtain the cationic amphiphilic amino polysiloxane solution.

The mass percentage concentration of the modified solution is 5%, the solvent is deionized water, and the mass percentage concentration of the methyl siloxane: catalyst: coupling agent: the mass ratio of the end capping agent is 35: 1: 15: 1.

the methyl siloxane is octamethylcyclotetrasiloxane, the catalyst is sodium hydroxide, and the end-capping agent is hexamethyldisiloxane;

the coupling agent is N- (gamma-dimethylaminopropyl) -gamma-aminopropylmethyldimethoxysilane: the mass ratio of the dodecyl trimethoxy silane is 13: 2.

The quaternization is carried out by using a mixed solution of absolute ethyl alcohol and benzyl chloride, wherein the absolute ethyl alcohol: the mass ratio of the amino polysiloxane is 2: 1, benzyl chloride: the molar ratio of the amino polysiloxane is 1: 1.

dyeing the fabric prepared by blending: and (2) immersing the blended fabric into a dye vat to dye with natural dye, washing and drying after dyeing to obtain the dyed fabric, wherein the dyeing temperature is 80 ℃, the dyeing time is 1h, and the bath ratio is 1: 30.

the dye in the dyeing process is natural dye, and the natural dye is indigo.

Fixing the color of the dyed fabric: soaking in titanium dioxide sol for two times, washing with water, and oven drying at 100 deg.C for 7 min; the baking temperature is 150 ℃, and the baking time is 6 min.

The titanium dioxide sol is prepared by the following steps: adding absolute ethyl alcohol: titanyl sulfate: deionized water according to a molar ratio of 20: 12: 2, mixing and stirring, adding a sodium carbonate solution to react until the pH value is 8, adding a mixed solution of acetic acid and polyethylene glycol until the pH value is 5, and continuously stirring to obtain the titanium dioxide sol.

The sodium carbonate solution is 1mol/L, the sodium carbonate solution is deionized water, and the mixed solution of acetic acid and polyethylene glycol is acetic acid: polyethylene glycol: the volume ratio of the deionized water is 4: 7: 1, the polyethylene glycol has a relative molecular weight of 500.

Example 2

The fabric with excellent performance comprises raw materials of lyocell fibers and cotton fibers, wherein the lyocell fibers account for 68% and the cotton fibers account for 32% in combination with official moisture regain percentage.

The lyocell fiber is modified lyocell fiber, the cotton fiber is modified cotton fiber, and the fabric is prepared by blending the modified lyocell fiber and the modified cotton fiber.

The preparation method of the modified lyocell fiber and the modified cotton fiber comprises the following steps:

1) opening, removing impurities and carding lyocell fibers and cotton fibers;

2) preparing a modified solution, immersing the treated lyocell fibers and cotton fibers in the modified solution, washing with clear water and drying in the air after immersion, wherein the immersion time is 2.5h and the temperature is 35 ℃.

The modified solution in the step 2) is an amino polysiloxane solution.

Mixing methyl siloxane with a catalyst, wherein the reaction temperature is 120 ℃, the reaction time is 1.5h, adding a coupling agent under a vacuum condition after the reaction is finished, continuing the reaction, adding an end-capping agent at the later stage of the reaction to prepare an amino polysiloxane solution, wherein the reaction time is 4h, and the reaction pressure is 0.02 MPa.

The mass percentage concentration of the modified solution is 5%, the solvent is deionized water, and the mass percentage concentration of the methyl siloxane: catalyst: coupling agent: the mass ratio of the end capping agent is 35: 1: 15: 1.

the methyl siloxane is octamethylcyclotetrasiloxane, the catalyst is sodium hydroxide, and the end-capping agent is hexamethyldisiloxane;

the coupling agent is N- (gamma-dimethylaminopropyl) -gamma-aminopropylmethyldimethoxysilane: the mass ratio of the dodecyl trimethoxy silane is 13: 2.

Dyeing the fabric prepared by blending: and (2) immersing the blended fabric into a dye vat to dye with natural dye, washing and drying after dyeing to obtain the dyed fabric, wherein the dyeing temperature is 80 ℃, the dyeing time is 1h, and the bath ratio is 1: 30.

the dye in the dyeing process is natural dye, and the natural dye is indigo.

Fixing the color of the dyed fabric: soaking in titanium dioxide sol for two times, washing with water, and oven drying at 100 deg.C for 7 min; the baking temperature is 150 ℃, and the baking time is 6 min.

The titanium dioxide sol is prepared by the following steps: adding absolute ethyl alcohol: titanyl sulfate: deionized water according to a molar ratio of 20: 12: 2, mixing and stirring, adding a sodium carbonate solution to react until the pH value is 8, adding a mixed solution of acetic acid and polyethylene glycol until the pH value is 5, and continuously stirring to obtain the titanium dioxide sol.

The sodium carbonate solution is 1mol/L, the sodium carbonate solution is deionized water, and the mixed solution of acetic acid and polyethylene glycol is acetic acid: polyethylene glycol: the volume ratio of the deionized water is 4: 7: 1, the polyethylene glycol has a relative molecular weight of 500.

Example 3

The fabric with excellent performance comprises raw materials of lyocell fibers and cotton fibers, wherein the lyocell fibers account for 68% and the cotton fibers account for 32% in combination with official moisture regain percentage.

The lyocell fiber is modified lyocell fiber, the cotton fiber is modified cotton fiber, and the fabric is prepared by blending the modified lyocell fiber and the modified cotton fiber.

The preparation method of the modified lyocell fiber and the modified cotton fiber comprises the following steps:

1) opening, removing impurities and carding lyocell fibers and cotton fibers;

2) preparing a modified solution, immersing the treated lyocell fibers and cotton fibers in the modified solution, washing with clear water and drying in the air after immersion, wherein the immersion time is 2.5h and the temperature is 35 ℃.

The modified solution in the step 2) is a cationic amphiphilic amino polysiloxane solution.

Mixing methyl siloxane with a catalyst, wherein the reaction temperature is 120 ℃, the reaction time is 1.5h, adding a coupling agent under a vacuum condition after the reaction is finished, continuing the reaction, adding an end-capping agent at the later stage of the reaction to prepare an amino polysiloxane solution, wherein the reaction time is 4h, and the reaction pressure is 0.02 MPa.

And carrying out quaternization reaction on the amino polysiloxane solution to obtain the cationic amphiphilic amino polysiloxane solution.

The mass percentage concentration of the modified solution is 5%, the solvent is deionized water, and the mass percentage concentration of the methyl siloxane: catalyst: coupling agent: the mass ratio of the end capping agent is 35: 1: 15: 1.

the methyl siloxane is octamethylcyclotetrasiloxane, the catalyst is sodium hydroxide, and the end-capping agent is hexamethyldisiloxane;

the coupling agent is N- (gamma-dimethylaminopropyl) -gamma-aminopropylmethyldimethoxysilane.

The quaternization is carried out by using a mixed solution of absolute ethyl alcohol and benzyl chloride, wherein the absolute ethyl alcohol: the mass ratio of the amino polysiloxane is 2: 1, benzyl chloride: the molar ratio of the amino polysiloxane is 1: 1.

dyeing the fabric prepared by blending: and (2) immersing the blended fabric into a dye vat to dye with natural dye, washing and drying after dyeing to obtain the dyed fabric, wherein the dyeing temperature is 80 ℃, the dyeing time is 1h, and the bath ratio is 1: 30.

the dye in the dyeing process is natural dye, and the natural dye is indigo.

Fixing the color of the dyed fabric: soaking in titanium dioxide sol for two times, washing with water, and oven drying at 100 deg.C for 7 min; the baking temperature is 150 ℃, and the baking time is 6 min.

The titanium dioxide sol is prepared by the following steps: adding absolute ethyl alcohol: titanyl sulfate: deionized water according to a molar ratio of 20: 12: 2, mixing and stirring, adding a sodium carbonate solution to react until the pH value is 8, adding a mixed solution of acetic acid and polyethylene glycol until the pH value is 5, and continuously stirring to obtain the titanium dioxide sol.

The sodium carbonate solution is 1mol/L, the sodium carbonate solution is deionized water, and the mixed solution of acetic acid and polyethylene glycol is acetic acid: polyethylene glycol: the volume ratio of the deionized water is 4: 7: 1, the polyethylene glycol has a relative molecular weight of 500.

Example 4

The fabric with excellent performance is prepared from raw materials including lyocell fibers and cotton fibers, and is characterized in that the lyocell fibers account for 68% and the cotton fibers account for 32% in combination with official moisture regain percentage.

The lyocell fiber is modified lyocell fiber, the cotton is modified cotton fiber, and the fabric is prepared by blending the modified lyocell fiber and the modified cotton fiber.

The preparation method of the modified lyocell fiber and the modified cotton fiber comprises the following steps:

1) opening, removing impurities and carding lyocell fibers and cotton fibers;

2) preparing a modified solution, immersing the treated lyocell fibers and cotton fibers in the modified solution, washing with clear water and drying in the air after immersion, wherein the immersion time is 2.5h and the temperature is 35 ℃.

The modified solution in the step 2) is a cationic amphiphilic amino polysiloxane solution.

Mixing methyl siloxane with a catalyst, wherein the reaction temperature is 120 ℃, the reaction time is 1.5h, adding a coupling agent under a vacuum condition after the reaction is finished, continuing the reaction, adding an end-capping agent at the later stage of the reaction to prepare an amino polysiloxane solution, wherein the reaction time is 4h, and the reaction pressure is 0.02 MPa.

And carrying out quaternization reaction on the amino polysiloxane solution to obtain the cationic amphiphilic amino polysiloxane solution.

The mass percentage concentration of the modified solution is 5%, the solvent is deionized water, and the mass percentage concentration of the methyl siloxane: catalyst: coupling agent: the mass ratio of the end capping agent is 35: 1: 15: 1.

the methyl siloxane is octamethylcyclotetrasiloxane, the catalyst is sodium hydroxide, and the end-capping agent is hexamethyldisiloxane;

the coupling agent is N- (gamma-dimethylaminopropyl) -gamma-aminopropylmethyldimethoxysilane: the mass ratio of the dodecyl trimethoxy silane is 13: 2.

The quaternization is carried out by using a mixed solution of absolute ethyl alcohol and benzyl chloride, wherein the absolute ethyl alcohol: the mass ratio of the amino polysiloxane is 2: 1, benzyl chloride: the molar ratio of the amino polysiloxane is 1: 1.

dyeing the fabric prepared by blending: and (2) immersing the blended fabric into a dye vat to dye with natural dye, washing and drying after dyeing to obtain the dyed fabric, wherein the dyeing temperature is 80 ℃, the dyeing time is 1h, and the bath ratio is 1: 30.

the dye in the dyeing process is natural dye, and the natural dye is indigo.

Fixing the color of the dyed fabric: soaking in titanium dioxide sol for two times, washing with water, and oven drying at 100 deg.C for 7 min; the baking temperature is 150 ℃, and the baking time is 6 min.

The titanium dioxide sol is prepared by the following steps: adding absolute ethyl alcohol: titanyl sulfate: deionized water according to a molar ratio of 20: 12: 2, mixing and stirring, adding a sodium carbonate solution to react until the pH value is 8, adding a polyethylene glycol mixed solution until the pH value is 5, and continuously stirring to obtain the titanium dioxide sol.

The sodium carbonate solution is 1mol/L, the sodium carbonate solution is deionized water, and the polyethylene glycol mixed solution is polyethylene glycol: the volume ratio of the deionized water is 7: 1, the polyethylene glycol has a relative molecular weight of 500.

Performance testing

And (3) testing water color fastness, wherein the testing method comprises the following steps: GB/T5713-: eye sight method;

color fastness to perspiration, test method: GB/T3922-: eye sight method;

rubbing fastness (dry), test method: GB/T3920-: eye sight method;

the number of chromatic aberration stages is 1-5, preferably 5, and worst 1

Decomposable carcinogenic aromatic dye (mg/g), test method: GB/T17592-

TABLE 1

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content of the above disclosure into equivalent embodiments with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.