KR20250109253A - manufacturing method of functional pants - Google Patents

Abstract

The present invention relates to pants having a design similar to a suit, and more specifically, to a method for manufacturing functional pants having a cool feeling and quick-drying properties so as to maintain a comfortable feeling even during activities, and having a stain-repellent coating layer formed on the fiber fabric constituting the pants, which can impart excellent oil-repellent, stain-repellent, and stain-release properties, and functional pants manufactured thereby.

Description

Functional pants and manufacturing method thereof {manufacturing method of functional pants}

The present invention relates to pants having a design similar to a suit, and more specifically, to a method for manufacturing functional pants having a cool feeling and quick-drying properties so as to maintain a comfortable feeling even during activities, and having a stain-repellent coating layer formed on the fiber fabric constituting the pants, which can impart excellent oil-repellent, stain-repellent, and stain-release properties, and functional pants manufactured thereby.

Slacks are a type of casual pants that have a similar design to suit pants but are more flexible than suit pants. Pants are made with elastic materials and have a loose fit, and have pleats on the front of the hips or the front and back of the pants to provide comfort. They also add volume to the hips, complementing flat hips and, on the contrary, covering the hips of people with thin waists and large hips, sufficiently fulfilling their role as a pants design. These pants are preferred by both men and women who prefer a classic and fashionable fit.

Meanwhile, pants are good for movement when worn, so they are used as everyday wear, as well as golf wear, mountaineering wear, or various sportswear. Accordingly, there are many cases where people engage in activities that cause them to sweat while wearing pants, and the pants become soaked in sweat, causing discomfort and inconvenience.

In addition, there are many cases where repeated flexion and extension movements occur due to various activities. In this case, as the knees are repeatedly pushed in and out due to the flexion and extension movements, tension is applied to the knee area, causing wrinkles to be straightened out, and as a result, there was a problem in that the design of the pants was damaged.

Meanwhile, the main causes of contamination of fabrics such as clothing including pants, carpets, and car seats are lipids generated from the human body, oil components from food, and dust in the air. Another cause of contamination is the phenomenon in which dirt (contaminants) that have been removed once during washing reattach to the fibers.

Antifouling treatment for textiles can be divided into treatment that makes it difficult for contaminants to adhere (Soil Guard treatment, SG treatment) and treatment that makes it easy for adhered contaminants to fall off (Soil Release treatment, SR treatment).

In general, processing that makes it difficult for contamination to adhere involves covering the fiber surface with a thin film using a fluorine-based polymer, making the unevenness of the fiber surface somewhat flat, and drastically reducing the surface free energy to minimize contact between the fiber and oily contamination.

The treatment that makes it easy to remove attached dirt is a method that makes the fiber surface hydrophilic with a hydrophilic polymer so that it easily fuses with detergent liquid during washing and easily removes dirt, and also prevents re-contamination due to oily dirt during rinsing.

This processing needs to use the most appropriate processing method depending on the purpose of the textile product, the environment, or the expected contaminants. For example, in the case of work clothes or aprons where oil contamination is the main contaminant, SG processing that does not attach contaminants is effective. In addition, SR processing that allows contaminants to be easily removed by washing is effective for food contaminants such as juice, curry, and pasta dishes such as dress shirts, blouses, and children's clothes. In addition, when washing a textile product with contaminants attached, the contaminants may be transferred to other clothing. In this case, processing that prevents re-contamination is necessary.

The most common finishing agent used in this processing is a fluorine-based stain-repellent finishing agent. Fluorine-based stain-repellent finishing agents include SG finishing agents that repel contaminants and prevent them from adhering to the fibers, and SR finishing agents that make it easy for contaminants to fall off the fibers through washing, etc. In the SG processing field, fluorine-based stain-repellent finishing agents are also called water- and oil-repellent finishing agents. Since a hydrophobic fluorine resin film wraps each fiber, it can lower the surface tension of the fibers below that of water or oil, so it can provide excellent water- and oil-repellent properties to textile products. Therefore, even if contaminants adhere, they remain on the fiber surface in the form of water droplets, so they can be easily shaken off and removed. It is an excellent processing method that prevents rain, sewage, juice, food, etc. from temporarily adhering to textile products and contaminating them.

However, these fluorine-based antifouling agents have the problem that the contaminants remain on the fibers when the viscosity of the contaminants is high or when the contaminants are left for a long time after attachment. In addition, since the coating layer itself has low durability, if the coating layer is destroyed by friction or wear, the contaminants easily stick to the destroyed area or are difficult to remove. In addition, most fluorine-based antifouling agents have high lipophilicity (hydrophobicity), so there is also the problem that the contaminants are difficult to detach from the hydrophilic washing liquid.

The present invention has been made to solve the above problems, and provides a function of preventing sweating even during active activities by providing a cool feeling and quick-drying properties, and increasing comfort by quickly drying sweat, and forming a coating layer on fabric using a copolymer having both hydrophilic and hydrophobic properties as a main component, and mixing highly hydrophilic nanofibers into the coating liquid forming the coating layer, thereby greatly improving the fastness of the coating layer, particularly the fastness to washing and abrasion resistance, and relates to a method for manufacturing antifouling coated pants, and functional pants manufactured thereby.

In order to achieve the above purpose, the method for manufacturing functional pants according to the present invention is characterized by including a step (S1) of processing an elastic fabric (10) to form a cooling layer (11) on one side; and a step (S2) of cutting and sewing the fabric (10) obtained by the step (S1) so that the cooling layer (11) is positioned on the inside, thereby manufacturing a pants body (20) composed of a waist end (21), a hip end (22), and a pair of pants ends (23).

In the present invention, the present invention further includes a step (S3) of turning over the trouser body (20) to expose the inner side of the trouser end (23) to the outside; a step (S4) of coating a plastic resin ink along a position where a wrinkle is to be formed on the trouser end (23) exposed to the outside by the step (S3) to form a belt-shaped shape-maintaining end (30); a step (S5) of turning over the trouser body (20) so that the shape-maintaining end (30) is positioned on the inner side of the trouser end (23); and a step (S6) of applying heat and pressure along the shape-maintaining end (30) from the outer side of the trouser end (23) to form leg wrinkles (40).

In addition, one aspect of the present invention is characterized by further comprising a step of coating an antifouling coating solution containing a fluorine-containing copolymer and nanofibers on the fabric; and a step of heat-treating the coating solution.

In the present invention, the fluorine-containing copolymer comprises one or more fluorine-containing monomers selected from a fluoroalkyl group and a fluoroalkenyl group; one or more acetoacetyl group-containing monomers selected from acetoacetoxyethyl acrylate, acetoacetoxyethyl methacrylate, acetoacetoxypropyl acrylate, acetoacetoxypropyl methacrylate, N-(2-acetoacetoxyethyl)acrylamide, N-(2-acetoacetoxyethyl)methacrylamide, vinyl acetoacetate and allyl acetoacetate; And it is characterized by including a repeating unit derived from one or more acrylate group-containing monomers selected from 3-chloro-2-hydroxypropyl methacrylate, 3-chloro-2-hydroxypropyl acrylate, glycerol monomethacrylate and glycerol monoacrylate.

In addition, the nanofibers are characterized as being silk fibroin nanofibers, and the antifouling coating solution is characterized as containing 10 to 30 parts by weight of the nanofibers and 50 to 500 parts by weight of the solvent per 100 parts by weight of the fluorine-containing copolymer.

Here, the antifouling coating solution is characterized in that it further includes one or more additives selected from a water-repellent, an anti-wrinkle agent, a fire-retardant, a crosslinking agent, an antistatic agent, a softener, an antibacterial agent, a pigment, and a paint.

In the present invention, the coating step is characterized in that the antifouling coating agent is coated on the fabric at 10 to 200 g/㎡, and the heat treatment step is characterized in that the heat treatment is performed at a temperature of 100 to 200°C.

The functional pants of the present invention can provide a cool feeling when worn by forming a cooling layer (11) on the inner side of the pants body (20).

In addition, since numerous modified grooves (13) and wrinkled surfaces (11a) are formed on the fabric inside the body of the pants (20), numerous pores are formed in the fabric (10) compared to before modification, and since these pores quickly absorb sweat from the skin through capillary action and then release it to the outside of the fabric (10), a quick-drying function can be expected.

In addition, the leg wrinkles (40) formed at the trouser leg (23) can be maintained semi-permanently by the shape-maintaining band (30) formed on the inner side of the trouser leg (23), and accordingly, even if repeated bending and stretching movements are performed due to various activities, the wrinkles at the knee area can be prevented from being spread out, thereby preventing the trouser design from being damaged.

Meanwhile, the functional pants manufactured according to the present invention form a coating layer on the fabric mainly composed of a copolymer having both hydrophilic and hydrophobic properties, and by mixing highly hydrophilic nanofibers into the coating solution forming the coating layer, the coating layer satisfies the stain-repelling properties while greatly increasing the fastness of the coating layer, particularly the fastness to washing and abrasion resistance.

Figure 1 is a drawing for explaining functional pants according to the present invention.
Figure 2 is a drawing for explaining that a cooling layer is formed on the fabric of the pants of Figure 1.
Figure 3 is a block diagram illustrating a series of steps for forming a cooling layer on the fabric of Figure 2.
Figure 4 is a drawing for explaining the configuration of a surface modifier for forming the cooling layer of Figure 3.
Figure 5 is a drawing for explaining that the surface modifying device of Figure 4 modifies the surface of the fabric.
Figure 6 is a drawing for explaining the formation of a modified groove and a modified surface with fine wrinkles formed on the surface of the fabric of Figure 5.
Fig. 7 is a drawing for explaining forming a primer layer on the modified groove and modified surface of Fig. 6.
Figure 8 is a drawing for explaining that a cooling capsule is attached when the cooling capsule is sprayed on the primer layer of Figure 7.
Figure 9 is a drawing for explaining that a finishing layer is formed to adhere the cooling capsule of Figure 8 to the primer layer.
Fig. 10 is a drawing for explaining that a shape-retaining member that semi-permanently maintains the wrinkles of Fig. 1 is formed on the inner side of the pants hem.

Hereinafter, with reference to the attached drawings, implementation examples and embodiments of the present invention will be described in detail so that a person having ordinary skill in the art to which the present invention pertains can easily practice the invention.

However, the present invention can be implemented in various different forms and is not limited to the implementation examples and embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are assigned similar drawing reference numerals throughout the specification.

Throughout the specification of the present invention, when it is said that a member is positioned "on" another member, this includes not only cases where the member is in contact with the other member, but also cases where another member exists between the two members.

Throughout the specification of the present invention, when a part is said to "include" a certain component, this does not mean that other components are excluded, but rather that other components can be included, unless otherwise specifically stated. The terms "about," "substantially," and the like used throughout the specification of the present invention are used in a meaning at or close to the numerical value when manufacturing and material tolerances inherent in the stated meaning are presented, and are used to prevent unscrupulous infringers from unfairly using the disclosure where exact or absolute values are mentioned to help the understanding of the present invention. The terms "step of doing ~" or "step of ~" used throughout the specification of the present invention do not mean "step for ~."

Throughout the specification of the present invention, the term "a combination of these" included in the expressions in the Makushi format means a mixture or combination of one or more selected from the group consisting of the components described in the expressions in the Makushi format, and means including one or more selected from the group consisting of said components.

Throughout the specification of the present invention, references to “A and/or B” mean “A or B, or A and B.”

FIG. 1 is a drawing for explaining functional pants according to the present invention, and FIG. 2 is a drawing for explaining that a cooling layer is formed on the fabric of the pants of FIG. 1.

The functional pants of the present invention are manufactured using an elastic fabric (10), and pursue not only the pants design but also activity and comfort, and further provide a cool sensation when worn, have quick-drying properties that quickly discharge sweat, and have semi-permanent pants wrinkles (40).

FIG. 3 is a block diagram illustrating a series of steps for forming a cooling layer on the fabric of FIG. 2, and FIG. 4 is a diagram illustrating the configuration of a surface modifying device for forming the cooling layer of FIG. 3. In addition, FIG. 5 is a diagram illustrating that the surface modifying device of FIG. 4 modifies the surface of the fabric, FIG. 6 is a diagram illustrating that a modified groove in which fine wrinkles are formed and a modified surface in which fine wrinkles are formed are formed on the surface of the fabric of FIG. 5, and FIG. 7 is a diagram illustrating that a primer layer is formed on the modified groove and the modified surface of FIG. 6, FIG. 8 is a diagram illustrating that a cooling capsule is attached when the cooling capsule is sprayed on the primer layer of FIG. 7, and FIG. 9 is a diagram illustrating that a finishing layer for attaching the cooling capsule of FIG. 8 to the primer layer is formed. In addition, FIG. 10 is a diagram illustrating that a shape-maintaining member for semi-permanently maintaining the wrinkles of FIG. 1 is formed on the inner side of the hem of the pants.

In order to manufacture the functional pants of the present invention, a step (S1) of processing a fabric (10) having elasticity to form a cooling layer (11) on one side is performed. The fabric (10) can be implemented with various fabric materials having elasticity, and for example, can be a blended fabric material of wool and poly.

Step (S1) includes a surface modification step (S1-1) for forming a modified surface having fine wrinkles (11a) (13a) and a plurality of modified grooves (13) on one side of the fabric (10), as illustrated in FIG. 2, a pretreatment step (S1-2) for forming a primer layer (14) on one side of the fabric (10) whose surface has been modified, a cooling capsule spraying step (S1-3) for spraying and attaching cooling capsules (15) onto the primer layer (14), and a posttreatment step (S1-4) for forming a finishing layer (16) for fixing the sprayed cooling capsules (15) to the primer layer (14).

The surface modification step (S1-1) is a step of modifying one side of the fabric (10) by passing the fabric (10) through a surface modification device (100).

The surface modifying device (100), as illustrated in FIG. 4, includes a heating roller (110) having a modifying surface (113) for modifying the surface of a fabric (10) that is brought into contact with the fabric while being transported, a cooling roller (120) that is rotated while being brought into contact with the heating roller (110) for cooling the back surface of the fabric (10) whose surface is to be modified, and a plurality of guide rollers (130)(130') that guide the fabric (10) between the heating roller (110) and the cooling roller (120).

The heating roller (110) includes a roller body (111) having an internally hollow cylindrical space, a surface-shaped heating element (112) installed on the inner surface of the roller body (111), and a modified surface (113) formed with a plurality of micro-needles (113') that are bonded to the surface of the roller body (111).

The roller body (111) has a cylindrical surface with a thin thickness of about 5 mm, and the surface heating element (112) is in close contact with the inner surface of the thin roller body (111). Accordingly, when the surface heating element (112) is turned on, the surface of the roller body (111) is rapidly heated, and when the surface heating element (112) is turned off, the surface of the roller body (111) is rapidly cooled.

The surface heating element (112) heats the roller body (111) to a temperature in the range of 100 to 140°C, preferably 120°C.

The modified surface (113) is formed on the outer surface of the roller body (111) and has a structure in which a number of fine needles (113') are formed in horizontal and vertical directions. The modified surface (113) is manufactured in a plate shape and then joined to form a single body around the outer surface of the roller body (111), and is instantly heated together with the roller body (111) when the surface-shaped heating element (112) operates.

The modified surface (113) is indirectly heated by the surface heating element (112), and the heated needles (113') form a number of modified grooves (13) on the surface of the fabric (10) when the fabric (10) is transported in a state of close contact with the heating roller (110), and the portion excluding the needles (113') heats the surface around the modified grooves (13) to form a modified surface (11a) on which fine wrinkles are formed.

The cooling roller (120) has a smaller diameter than the heating roller (110), and has a structure in which a plurality of channels (121) through which cooled refrigerant flows are formed inside, and an elastic layer (122) is formed on the outer surface to which the fabric (10) is attached. A coolant cooled to a predetermined temperature, 0 to 5° C. in this embodiment, is circulated through the channels (121), and the surface of the fabric (10) attached to the elastic layer (122) is cooled by the coolant.

The guide roller (130)(130') guides the supplied fabric (10) to pass between the heating roller (110) and the cooling roller (120).

By means of this surface modifying device (100), when the fabric (10) passes between the heating roller (110) and the cooling roller (120), as shown in FIG. 5, a plurality of needles (113') formed on the modifying treatment surface (113) dig into the surface of the fabric (10) to form modifying grooves (13).

At this time, since the modified surface (113) is in a heated state, when the transferred fabric (10) is separated from the modified surface (113), as shown in FIG. 6, as the surface of the fabric (10) cools, micro-wrinkles (13a) are formed on the inner surface of a number of modified grooves (13) due to shrinkage caused by the temperature difference, and micro-wrinkles (11a) are also formed on the modified surface on the outer side of the modified grooves (13).

Afterwards, when the fabric (10) completely comes out of the heating roller (110) and cooling roller (120), the modified surface on which the modified grooves (13) are formed is instantly hardened by the cold heat conducted from the surface cooled by the cooling roller (120), and the fine wrinkles (13a) formed on the inner surface of the modified grooves (13) or the fine wrinkles (11a) formed on the modified surface are thermally hardened. These fine wrinkles (11a)(13a) formed on the modified grooves (13) and the modified surface increase the contact area that allows the cooling capsules (15) described later to be firmly fixed.

The preprocessing step (S1-2) is a step of forming a primer layer (14) for attaching a cooling capsule (15) to be described later to the modified surface and modified grooves (13) and the fabric (10) on which the modified surface is formed, as shown in Fig. 7. The primer layer (14) is formed by spraying a primer toward the modified surface and modified grooves (13). The primer used at this time varies depending on the material of the fabric (10). For example, a polyurethane resin is used as the primer.

The cooling capsule spraying step (S1-3) is a step of spraying cooling capsule (15) powder onto the primer layer (14) formed on the fabric (10), as illustrated in FIG. 8. The cooling capsule (15) sprayed in the cooling capsule spraying step (S1-3) has a micro-unit size, and the sprayed cooling capsule (15) is attached to the primer layer (14) formed on the modified surface and the modified groove (13), and in particular, a greater amount of cooling capsule (15) is filled and attached to the modified groove (13) immersed from the modified surface.

The cooling capsule (15) is a known cooling composition processed into a capsule shape and has a size small enough to be introduced into the modified groove (13). The cooling capsule (135) is implemented by mixing xylitol, erythritol, menthol and a binder in a ratio of 1:1:1:1 and then processing them into a micro-sized capsule shape.

The post-processing step (S1-4) is a step of forming a finishing layer (16) to fix the cooling capsule (15) attached to the primer layer (14) to the fabric (10), as shown in Fig. 8. The finishing layer (16) is implemented by spraying a resin composition that is bound to the primer layer (14).

By performing step (S1) consisting of surface modification step (S1-1), pretreatment step (S1-2), cooling capsule spraying step (S1-3), and post-treatment step (S1-4), a cooling layer (11) that can provide a cool sensation when in contact with the skin can be formed on the fabric (10). In particular, since the cooling capsule (15) is attached to the primer layer (14) formed on the modified surface and the modified groove (13) and is finished by the finishing layer (16), the cooling capsule (15) can be prevented from coming off even when the fabric is repeatedly washed, and thus the cooling sensation can be maintained for a long time.

In addition, since fine wrinkles (11a)(13a) are formed in the modified surface and modified groove (13) formed on the surface of the fabric (10), the area of contact when the fabric (10) is in close contact with the skin becomes smaller, and accordingly, as the contact is reduced, a more effective cooling sensation is felt, which can be a cause of suppressing the generation of sweat.

In addition, the fine wrinkles (11a)(13a) formed on the modified surface and the modified groove (13) form numerous pores in the fabric (10), and when sweat is produced on the skin, these pores absorb it through capillary action and then release it to the outside of the fabric (10), so a quick-drying function can be expected.

Next, a step (S2) is performed to manufacture a pants body (20) composed of a waist end (21), a hip end (22), and a pair of pants ends (23) by cutting and sewing the fabric (10) obtained by the step (S1) so that the cooling layer (11) is positioned on the inside. Since this step (S2) is performed by a known method, a detailed description thereof is omitted.

Next, a step (S3) is performed to turn the body of the pants (20) inside out and expose the inner side of the hem of the pants (23) to the outside.

Next, a step (S4) is performed to form a belt-shaped shape-maintaining section (30) by coating a plastic resin ink along the position where wrinkles are to be formed on the trouser section (23) exposed to the outside by step (S3).

Step (S4) is a preliminary step for forming a semi-permanent wrinkle on the manufactured trouser leg (23), and as shown in FIG. 9, a thermoplastic resin is coated along the position where the wrinkle (40) to be described later is to be formed, and the width of the shape-retaining leg (30) formed at this time is in the range of 10 to 20 mm, and the thickness is in the range of 0.01 to 0.1 mm.

The width of the shape-maintaining unit (30) is 10 mm or less, and when forming the wrinkles described later, there is a possibility that the wrinkles may deviate from the shape-maintaining unit (30) due to a positional error, and if it is 20 mm or more, the silhouette of the shape-maintaining unit may be visible around the wrinkles.

If the thickness of the shape-maintaining member (30) is less than 0.01 mm, a semi-permanent shape cannot be formed when forming the wrinkles described later, and if it is more than 0.1 mm, the silhouette of the shape-maintaining member (30), which is a harder material than the fabric, can be seen around the wrinkles (40).

Step (S4) is to fix the position of the trouser leg (23) in a flat state and transfer plastic resin ink to the position where wrinkles are to be formed using a known screen printing method.

Next, a step (S5) is performed to turn the pants body (20) over so that the shape-maintaining section (30) is positioned on the inside of the pants hem (23).

Next, a step (S6) is performed to form leg wrinkles (40) by applying heat and pressure along the shape-maintaining section (30) on the outside of the trouser leg (23).

By this series of steps (S1) to (S6), the leg wrinkles (40) formed on the pants remain semi-permanently even after repeated washing.

In this way, the functional pants of the present invention are manufactured through a series of steps (S1) to (S6) described above, thereby forming a cooling layer (11) on the inner surface of the pants body (20), thereby allowing a cool feeling to be felt when worn.

In addition, since numerous modified grooves (13) and wrinkled surfaces (11a) are formed on the fabric inside the body of the pants (20), numerous pores are formed in the fabric (10) compared to before modification, and since these pores quickly absorb sweat from the skin through capillary action and then release it to the outside of the fabric (10), a quick-drying function can be expected.

Meanwhile, the present invention may additionally include an antifouling coating step. Specifically, a step of forming an antifouling layer may be performed by coating an antifouling coating solution containing a fluorine-containing copolymer, a solvent, and nanofibers on the fabric.

The above-mentioned antifouling coating liquid is attached to the surface of fibers and filaments forming the above-mentioned fabric to impart antifouling properties to the fabric itself. In the present invention, a process of pretreating the fabric may be performed prior to forming an antifouling layer on the fabric, if necessary.

In the present invention, the fluorine-containing copolymer is intended to impart antifouling properties to the fiber, and may include a polymer in which a hydrophilic monomer and a hydrophobic monomer are polymerized into a fluorine-containing monomer.

In general, stain-repellent treatment is a treatment that makes it difficult for stains to adhere to textile products or makes it easy to remove stains that have adhered to them through washing, etc., and stains are broadly classified into water-soluble stains and oil-based stains, and these treatments should use the most appropriate method depending on the intended use of the textile product, environment, and anticipated stains.

For example, in cases where oil contamination is the main contaminant, such as work clothes, SG processing is effective in preventing attachment to the fiber. SR processing is effective in cases of food contamination such as juice or curry on dress shirts or children's clothes. In cases where textile products with contaminants are washed at once, re-attachment prevention processing is necessary.

Fluorine-based stain-repellent agents, which are used to prevent adhesion of water-based or oil-based stains or to improve the removal properties during washing, can prevent adhesion and penetration of these stains onto the fiber surface by providing the fiber surface with a lower surface tension than water or oil.

In particular, fluorine-based SG treatment agents are water-repellent and oil-repellent treatment agents that form a hydrophobic fluorine resin film on each fiber to lower the surface tension of the fiber surface. Accordingly, they provide excellent water-repellent and oil-repellent properties to textile products, and even if dirt adheres, it remains on the fiber surface in the form of droplets, making it easy to remove the dirt, making them an excellent stain-repellent treatment agent.

However, if the contamination is highly viscous or adheres or penetrates due to friction or wear and is left for a long time, it may remain on the fiber. In such cases, it is effective to use an SR treatment agent.

In more detail, when the SR treatment agent is worn (in the air), the hydrophobic fluorine component on the fiber surface is oriented toward the outside (air side) to form a strong water-repellent and oil-repellent film, and the copolymerized hydrophilic component is oriented toward the inside (fiber side).

On the other hand, when washing (in water), the fluorine component is oriented inward (fiber side) and the hydrophilic component is oriented outward (water), thereby hydrophilizing the fiber surface. By these mechanisms, the contamination on the fiber surface is extruded into the water and easily removed from the fiber surface.

Therefore, the structure of the polymer selectively changes depending on the surrounding conditions of the fabric, and because of this, the fiber surface has a mechanism to change between hydrophilic and lipophilic, so excellent stain resistance and stain removal properties can be obtained, and this is called a flip-flop structure.

A polymer having a flip-flop structure as described above is basically a structure having both a hydrophilic functional group and a hydrophobic functional group within the molecule, and specifically, can be a copolymer in which a fluorine-containing monomer, an acetoacetyl group-containing monomer, and an acrylate group-containing monomer are polymerized.

In the present invention, the fluorine-containing monomer is a monomer that imparts hydrophobicity to the polymer, and specifically may be a monomer having a fluoroalkyl group or fluoroalkenyl group having 2 to 30 carbon atoms.

Examples of such monomers include 1,1,2,2-tetrafluoroethyl-2,2,2,3-tetrafluoropropyl ether (TTE), bis(2,2,2-trifluoroethyl) ether (BTFE), 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (TFTFE), methoxynonafluorobutane (MOFB), ethoxynonafluorobutane (EOFB), etc. In addition to these, fluoroether monomers in which some or all of the hydrogens are substituted, fluorovinyl ether monomers, etc. may be further included. In addition, the above monomers may be used alone or in the form of a mixture of two or more.

The above acetoacetyl group-containing monomer has excellent adhesion to a treated material, particularly fibers, and has an active methylene group in the molecule, so it reacts well with a crosslinking agent and has the effect of improving wash fastness.

The above acetoacetyl group-containing monomer may have a carbon-carbon double bond in addition to the acetoacetyl group, and examples of such monomers include acetoacetoxyethyl acrylate, acetoacetoxyethyl methacrylate, acetoacetoxypropyl acrylate, acetoacetoxypropyl methacrylate, N-(2-acetoacetoxyethyl)acrylamide, N-(2-acetoacetoxyethyl)methacrylamide, vinyl acetoacetate, and allyl acetoacetate. In addition, the above monomers may be used alone or in mixtures of two or more thereof.

The above acrylate-containing monomer is a monomer based on a vinyl group and, if necessary, has a hydroxyl group, which is a hydrophilic group. As described above, since it exhibits hydrophilicity, it can have a flip-flop structure that can selectively express hydrophilicity or hydrophobicity on the surface depending on the surrounding environment of the coating layer.

Examples of the above acrylate monomers include acrylic monomers such as ethylenically unsaturated monocarboxylic acids such as 3-chloro-2-hydroxypropyl methacrylate, 3-chloro-2-hydroxypropyl acrylate, (meth)acrylic acid, crotonic acid, and cinnamic acid, and monoesters of glycerol, and these can also be used alone or in mixtures of two or more.

The above copolymer is not limited to the composition ratio of the monomers, but it is preferable to polymerize by mixing 0.1 to 10 parts by weight of an acetoacetyl group-containing monomer and 30 to 50 parts by weight of an acrylate group-containing monomer relative to 100 parts by weight of a fluorine-containing monomer. Within the above range, the copolymer can have the above-described flip-flop structure and can secure a certain or higher washing fastness.

In addition, the copolymer may additionally introduce one or more functional monomers to further improve durability of contamination removal, solubility in organic solvents, flexibility, adhesion to a subject to be treated, etc. Examples of such monomers include, but are not limited to, diacetone acrylamide, (meth)acrylamide, N-methylolacrylamide, N,N-dimethylaminoethyl (meth)acrylate, N,N-diethylaminoethyl (meth)acrylate, butadiene, chloroprene, glycidyl (meth)acrylate, maleic acid derivatives, vinyl halides such as vinyl chloride, ethylene, vinylidene halides such as vinylidene chloride, vinyl alkyl ethers, styrene, alkyl (meth)acrylates, vinylpyrrolidone, isocyanate group-containing (meth)acrylates such as 2-isocyanatoethyl (meth)acrylate, or their (meth)acrylates in which isocyanate groups are blocked by a blocking agent such as methyl ethyl ketoxime, and the like. One or more of these can also be used.

The above copolymer is not limited to a molecular weight. For example, the copolymer preferably has a weight average molecular weight of 10,000 to 1,000,000, more preferably 600,000 to 800,000, in terms of securing mechanical properties of the composition, particularly washing fastness.

In addition, the copolymer is not limited to the polymerization form and polymerization method. For example, the copolymer may be a block copolymer, a graft copolymer, or even a random copolymer. Various polymerization methods such as bulk polymerization, solution polymerization, emulsion polymerization, and radiation polymerization may be selected as the polymerization method, but, for example, solution polymerization using an organic solvent or emulsion polymerization using water or an organic solvent and water in combination is generally selected, and after polymerization, it is preferable to manufacture a treatment solution by diluting with water or adding an emulsifier to emulsify in water.

In the present invention, the nanofibers are added to improve the mechanical and chemical properties of the coating layer, and have advantages such as excellent strength properties, thermal stability, large specific surface area, and low shrinkage and swelling.

The above nanofibers may more preferably be silk fibroin nanofibers. The above fibroin fibers are widely recognized as a special biopolymer in nature, which exists abundantly and is inexpensive, while also having mechanical strength, flexibility, and optical transparency, so that they can be applied to various coating layers that require improved properties regardless of the color of the substrate.

Silk protein is composed of silk fibroin, which is insoluble in water, and the remainder is sericin, which is soluble in water, with 70 to 80% of the silk protein weight being composed of water-soluble sericin. The silk fibroin is a fiber protein synthesized in the silk glands of the larvae of the silk layer, represented by silkworms, and is composed of 18 amino acids and is composed of antiparallel β-sheet layers. This silk fibroin has good bioaffinity, nonpollution, and biodegradability.

In particular, silk protein composed of various amino acids exhibits behavior similar to the above-described fluorine-containing copolymer because the hydrophilic block and the hydrophobic block exhibit a random or block copolymer form, and in particular, the hydrophilic group of the fluorine-containing copolymer and the hydrophilic block of the silk protein, and the hydrophobic group of the fluorine-containing copolymer and the hydrophobic block of the silk protein have an affinity for each other, which can further enhance the mechanical properties of the coating layer and increase the adhesion to the fiber.

The above fibroin fiber can be manufactured by removing sericin from silkworm yarn through a refining process and making the fibroin fiber finer to a nano-level. At this time, any refining agent used in the refining process can be used as long as it is a refining agent that is usually used to remove sericin from silk. For example, it can be performed using a refining agent including at least one selected from the group consisting of a soap solution, an alkaline solution, an acidic solution, an enzyme solution, and an amine solution.

Here, the soaps are made from a variety of ingredients including Tallow, Oliver oil, Coconut oil, Castor oil, Arachis oil, Cotton seed oil, Chrysalis oil, Sodium Laurate, Sodium Myristate, Sodium Stearate, Sodium Arachidate, Sodium Oleate, and Sodium Ricinoleate.

In addition, refining in an alkaline aqueous solution or an acidic aqueous solution is also possible, and a refining method using an enzyme can also be applied. The alkaline aqueous solution may be one using sodium hydroxide, sodium carbonate, calcium carbonate, sodium silicate, sodium phosphate, sodium bicarbonate, borax, ammonia, etc. The acidic aqueous solution may be one using lactic acid, tartaric acid, citric acid, oxalic acid, malonic acid, succinic acid, acetic acid, chloroacetic acid, dichloroacetic acid, trichloroacetic acid, etc. The enzyme may be trypsin, papain, etc. In addition, refining using methylamine, ethylamine, etc. as an amine agent may also be applied.

The above refining process can be performed under conditions of 70 to 150°C, preferably 90 to 130°C. At this time, the refining time can be performed for about 0.3 to 5 hours, preferably about 0.5 to 4 hours. In terms of effectively producing fibroin nanofibers without damaging the silk through the above refining process, the refining time can be optimized and performed within the temperature range described above. In particular, if the temperature of the refining process is less than 70°C, sericin may not be sufficiently removed, silk fibroin nanofibers may not be sufficiently produced, or the time required for sericin removal and silk fibroin nanofiber production may significantly increase, which may increase the process cost. In addition, if the temperature of the refining process exceeds 150°C, the molecular chains of the silk may be cut during the refining process, or the silk may be damaged.

The above nanofibers are not limited to fiber length and fineness. For example, the nanofibers may have a fiber length of 1 to 10 mm and a fineness of 0.1 to 10 d, and in addition, the fiber length and fineness may be freely selected within a range that does not harm the purpose of the present invention.

In the present invention, it is preferable that the nanofibers are included in an amount of 10 to 30 parts by weight relative to 100 parts by weight of the fluorine-containing copolymer. If the content of the nanofibers is less than the above range, the mechanical properties and adhesiveness of the coating layer may deteriorate, and if it exceeds the above range, the nanofibers may act as cracks in the coating layer, thereby deteriorating the mechanical properties.

In the present invention, the solvent is not limited to a type as long as it is a substance capable of dissolving the fluorine-containing copolymer, and examples of such solvents include ketones such as acetone and methyl ethyl ketone, esters such as ethyl acetate and methyl acetate, glycols such as propylene glycol, dipropylene glycol monomethyl ether, dipropylene glycol, tripropylene glycol, and low molecular weight polyethylene glycol, alcohols such as ethyl alcohol and isopropanol, and 1-methyl-2-pyrrolidone.

The amount of the solvent added is not limited, but it is preferable to add 50 to 500 parts by weight per 100 parts by weight of the fluorine-containing copolymer.

In the present invention, the antifouling coating solution may further contain various additives in addition to the above components. Examples of such additives include water and oil repellents, anti-wrinkle agents, shrinkage inhibitors, flame retardants, crosslinking agents, antistatic agents, softeners, antibacterial agents, pigments, and paints. These may be used alone or in combination of two or more within a range that does not impair the purpose of the present invention, and the amount of addition is not limited. In addition, the above components may be mixed together in the treatment bath when treating the fabric, or the above components may be added separately as a post-treatment method.

In the present invention, the antifouling coating solution can be coated on the fabric in various ways, but it is preferable to coat the fabric by immersing it in a bath containing the antifouling coating solution and then taking it out. At this time, in order to prevent the fabric from deteriorating the touch or flexibility due to excessive coating layer formation, it is preferable to remove unnecessary coating solution after passing it through the bath and then drying it before forming the coating layer.

Specifically, it is preferable that the antifouling coating solution is coated on the fabric at 10 to 200 g/㎡. In the above range, improvements in mechanical and chemical properties such as the aforementioned antifouling properties, scratch resistance, and adhesion can be achieved.

Next, as mentioned above, a step of heat-treating the fabric impregnated with the coating liquid is performed. The heat treatment can be performed in various ways without limitation as long as it is commonly applied in the industry. For example, the heat treatment step can be performed by passing the fabric through a hot air convection heat treatment device. In addition to the hot air convection, an infrared heat treatment device can also be used. In this case, it is preferable to perform the heat treatment step at a temperature of 100 to 200°C as the heat treatment temperature.

Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples. However, the following examples are only examples for describing preferred embodiments of the present invention in detail, and the present invention is not limited by the following examples.

The physical properties of the specimens manufactured through examples and comparative examples were measured as follows.

(Bang-o-seong)

The stain release test was conducted according to the Stain Release Management Performance Test Method of the AATCC in the United States. Corn oil or mineral oil was used for the test stain.

Spread a 20 cm square test cloth on a horizontally laid blotting paper, and drop 5 drops (approximately 0.2 cc) of corn oil or mineral oil as a contamination onto the test cloth. Cover it with glassine paper, and also load a 2268 g weight and leave it for 60 seconds. After 60 seconds, remove the weight and glassine paper, and leave it in that state at room temperature for 15 minutes. After 15 minutes, add a ballast cloth to the test cloth to make it 1.8 kg, and use 100 g of detergent (AATCC standard WOB detergent) and wash it for 12 minutes in an AATCC standard washing machine (manufactured by Kenmore, USA) at a bath volume of 64 L and a bath temperature of 38°C, rinse, and dry the test cloth in an AATCC standard tumbler dryer (manufactured by Kenmore, USA). The condition of residual stain contamination on the dry test cloth is compared with the standard photographic plate for judgment, and the contamination removal performance is expressed as the corresponding judgment grade. The standard photographic plate for judgment was AATCC-TM130-2000 (American Association of Textile Chemists and Colorists Test Method 130-2000). The test was repeated 10 times and the average value was calculated.

*Judging criteria

1: The stain is barely removed.

2: There are still a lot of stains left.

3: Some stains remain

4: The stain is almost removed.

5: No stains left

(oil-bearing)

It was performed according to AATCC-TM118-2000, and specifically, after spreading the test cloth horizontally, one drop each of n-heptane, n-octane, and n-decane was dropped on it, and the penetration status was judged after 30 seconds. The judgment criteria are as follows.

*Judging criteria

1: The diameter of the stain is 1.5 cm or more.

2: The diameter of the stain is 1.2 cm or more and less than 1.49 cm.

3: The diameter of the stain is 0.8 cm or more and less than 1.19 cm.

4: The diameter of the stain is 0.5 cm or more and less than 0.79 cm.

5: The diameter of the stain is less than 0.49 cm

(washing fastness)

The color fastness test for washing was performed using the test method of KS K ISO 105-C01: 2007. This method was performed using a cylinder made of glass or stainless steel with a diameter of (75±5) mm, a height of (125±10) mm, and a capacity of (550±50) ml. A detergent solution was prepared at 5 g/ℓ using the AATCC standard detergent WOB (without optical brightener). The soap solution prepared in this way was placed in the cylinder with the test piece at a liquid ratio of 50:1 and washed at a temperature of 40±2℃/min for 180 minutes. After the washing process, the test piece was taken out, washed twice with distilled water, dried at room temperature, and the surface was observed and judged according to the following criteria. The test was repeated 10 times and the average value was calculated.

*Judging criteria

1: No coating layer remains on the fiber surface

2: A significant portion of the coating layer is removed from the fiber surface.

3: Half of the coating layer is removed from the fiber surface.

4: A significant amount of coating layer remains on the fiber surface.

5: The coating layer is not removed.

(Example 1)

First, to manufacture a fluorine-containing copolymer, 5 parts by weight of acetoacetoxyethyl methacrylate, 15 parts by weight each of 3-chloro-2-hydroxypropyl methacrylate and cinnamic acid were mixed with 100 parts by weight of bis(2,2,2-trifluoroethyl) ether and reacted at 70°C.

Next, a coating composition mixed with 100 parts by weight of a fluorine-containing copolymer, 20 parts by weight of polypropylene fiber (fiber length 5 mm, fineness 3 d), and 100 parts by weight of methyl ethyl ketone was coated on a mesh material specimen in which cotton and polyethylene terephthalate were each mixed in a weight ratio of 5:5, and the coating solution was applied to the specimen so as to have 100 g/㎡. Then, the specimen was completed by heating at 130°C for 10 minutes.

(Example 2)

A specimen was manufactured using the same method as in Example 1 above, except that polyethylene terephthalate fibers having the same specifications as nanofibers were added during the manufacture of the specimen.

(Example 3)

A specimen was manufactured using the same method as in Example 1 above, except that silk fibroin fibers having the same specifications as nanofibers were added during the manufacture of the specimen.

(Example 4)

A specimen was prepared in the same manner as in Example 3 above, except that 30 parts by weight of 3-chloro-2-hydroxypropyl methacrylate and cinnamic acid were each mixed when preparing a fluorine-containing copolymer.

(Example 5)

A specimen was prepared in the same manner as in Example 3 above, except that 10 parts by weight of 3-chloro-2-hydroxypropyl methacrylate and cinnamic acid were each mixed when preparing a fluorine-containing copolymer.

(Comparative Example 1)

A specimen was prepared in the same manner as in Example 1 above, except that polytetrafluoroethylene was added instead of the fluorine-containing copolymer during specimen preparation.

(Comparative Example 2)

A specimen was manufactured using the same method as in Example 1 above, except that no antifouling coating was applied during the manufacture of the specimen.

[Table 1]

As shown in Table 1 above, it can be seen that the specimens manufactured by the manufacturing method according to the present invention have excellent stain-proofing and oil-repelling properties, and the coating layer is maintained even after washing, so that the washing fastness is also high. In particular, Example 3, which used silk fibroin fibers having both hydrophilic blocks and hydrophobic blocks, showed better washing fastness than Examples 1 and 2, which used polypropylene and polyethylene terephthalate, which are hydrophobic fibers.

Here, it can be seen that examples 4 and 5, in which the degree of polymerization of the hydrophilic monomer of the fluorine-containing copolymer was high or low, rather showed a decrease in the mechanical properties of the coating layer, and the lowest washing fastness was shown in the case of using a general fluorine polymer.

Above, although the present invention has been described in detail through examples, the present invention is not limited to the above-described embodiments, and can be modified in various forms, and it is obvious that many modifications are possible by those skilled in the art within the technical spirit of the present invention. In addition, those skilled in the art within the technical spirit of the present invention described in the claims may substitute, modify, and change in various forms, and this will also fall within the scope of the present invention.

10... Fabric 11... Cooling layer
13... Modified Home 13a... Fine Wrinkle
14 ... Primer layer 15 ... Cooling capsule
16 ... Finishing layer 20 ... Body of the pants
21... Waist 22... Hip
23 ... Pants 100 ... Surface Modifier
110 ... heating roller 111 ... roller body
112 ... Surface heating element 113 ... Modified surface
120 ... Cooling roller 121 ... Euro
122 ... elastic layer 130 , 130' ... guide roller

Claims (4)

Step (S1) of forming a cooling layer (11) on one side by processing a fabric (10) having elasticity; and
A step (S2) of manufacturing a pants body (20) composed of a waist end (21), a hip end (22), and a pair of pants ends (23) by cutting and sewing the fabric (10) obtained through the above step (S1) so that the cooling layer (11) is positioned on the inside;
The above step (S1) includes a surface modification step (S1-1) for forming a modified surface having fine wrinkles (11a) (13a) and a plurality of modified grooves (13) on one side of the fabric (10), a pretreatment step (S1-2) for forming a primer layer (14) on one side of the surface-modified fabric (10), a cooling capsule spraying step (S1-3) for spraying and attaching cooling capsules (15) onto the primer layer (14), and a posttreatment step (S1-4) for forming a finishing layer (16) for fixing the sprayed cooling capsules (15) to the primer layer (14).
The surface modification device (100) performing the surface modification step (S1-1) includes a heating roller (110) having a modification surface (113) on which a plurality of microneedles (113') are formed for forming a plurality of modification grooves (13) on the surface of the fabric (10) that is in close contact with the fabric while being transported, a cooling roller (120) that is in close contact with the heating roller (110) and rotates to cool and heat the back surface of the fabric (10) on which a plurality of modification grooves (13) are formed, and a plurality of guide rollers (130)(130') that guide the fabric (10) to the heating roller (110) and the cooling roller (120).
The above heating roller (110) includes a roller body (111) having an internally hollow cylindrical space, a surface-shaped heating element (112) installed on the inner surface of the roller body (111), and a modified surface (113) formed with a plurality of micro-needles (113') that are bonded to the surface of the roller body (111);
A method for manufacturing functional pants, characterized in that the cooling roller (120) has a smaller diameter than the heating roller (110), and includes a plurality of channels (121) formed inside through which refrigerant flows, and an elastic layer (122) formed on the outer surface to which the fabric (10) adheres. In paragraph 1,
A step of coating an antifouling coating solution containing 10 to 30 parts by weight of fibroin nanofibers and 50 to 500 parts by weight of a solvent relative to 100 parts by weight of a fluorine-containing copolymer on the fabric; and
A step of heat treating the above coating solution;
In addition, it includes:
The above fluorine-containing copolymer is,
100 parts by weight of one or more fluorine-containing monomers selected from a fluoroalkyl group and a fluoroalkenyl group;
0.1 to 10 parts by weight of one or more acetoacetyl group-containing monomers selected from acetoacetoxyethyl acrylate, acetoacetoxyethyl methacrylate, acetoacetoxypropyl acrylate, acetoacetoxypropyl methacrylate, N-(2-acetoacetoxyethyl)acrylamide, N-(2-acetoacetoxyethyl)methacrylamide, vinyl acetoacetate and allyl acetoacetate; and
30 to 50 parts by weight of a mixture of 3-chloro-2-hydroxypropyl methacrylate and cinnamic acid;
A method for manufacturing functional pants, characterized by including a. In the first paragraph,
Step (S3) of turning over the above-mentioned pants body (20) to expose the inner side of the pants hem (23) to the outside;
A step (S4) of forming a belt-shaped shape-maintaining section (30) by coating a plastic resin ink along the position where wrinkles are to be formed on the trouser section (23) exposed to the outside through the above step (S3);
Step (S5) of turning over the above-mentioned pants body (20) so that the shape-maintaining section (30) is positioned on the inside of the pants section (23); and
A method for manufacturing functional pants, characterized in that it further includes a step (S6) of forming leg wrinkles (40) by applying heat and pressure along the shape-maintaining section (30) from the outside of the trouser leg (23). In the second paragraph,
A method for manufacturing antifouling-coated pants, characterized in that the antifouling coating solution further includes one or more additives selected from a water-repellent, oil-repellent, anti-wrinkle, anti-shrinkage, flame retardant, crosslinking agent, antistatic agent, softener, antibacterial agent, pigment, and paint.