KR20100007450A - Silver-coated multi-functional thread and manufacturing method thereof - Google Patents

Abstract

PURPOSE: Multi-functional threads manufactured by polyester master batch chip and a manufacturing method thereof are provided to offer quick drying property, and to maintain antibacterial property semi-permanently. CONSTITUTION: A method for manufacturing a master batch in which nano-silver particles are evaporated includes the following steps of: vaporizing silver on the master batch; spinning mono-filament consisting of multi-functional threads by melting the master batch; heat-setting the spun mono-filament; and mixing the master bath in which the silver is not evaporated to adjust the content of the silver. A method for manufacturing the multi-functional threads includes a step for spinning deformed section filament through h a specific spinneret, and a step for heat-setting the spun deformed section filament.

Description

Multifunctional yarn manufactured using a masterbatch on which silver nanoparticles are deposited and a manufacturing method thereof {SILVER-COATED MULTI-FUNCTIONAL THREAD AND MANUFACTURING METHOD THEREOF}

The present invention not only absorbs sweat well when used as a yarn for clothing, especially a sports garment, and also easily dries the absorbed sweat (hereinafter referred to as 'absorption quick drying') and causes discoloration and discoloration of fibers or to the human body. The present invention relates to a multifunctional yarn having a function of inhibiting the invasion and proliferation of harmful bacteria (hereinafter referred to as 'antibacterial').

As the functional aspects of the apparel products are further emphasized and the needs of consumers for high functional and multifunctional materials increase, research on multifunctional materials considering health and comfort is being actively conducted.

Functions required for the clothing material are far infrared ray emission, antibacterial, deodorant and deodorant, conductive and flame retardant, sweat-absorbent quick-drying, UV protection, etc., to add functional particles to the cross-sectional cross-section or to use chemical modification and properties to achieve this Efforts are underway to develop antibacterial and antistatic composite yarns.

Sweat-absorbing quick-drying is a textile material that maximizes the moisture transfer history to absorb and dissipate moisture rapidly, while general materials have the ability to absorb sweat, but also have the ability to quickly transfer to the outer skin surface and dissipate and dry the transferred sweat. It is a high functional fiber. In addition, a proposal for a multifunctional island fiber including silver (Ag) has been made to increase the sweat absorption quick drying ability and at the same time to express antibacterial function.

Korean Patent Laid-Open Publication No. 2006-0087685 as a conventional technique for improving the sweat absorption quick drying is formed by dispersing an inorganic antimicrobial agent substituted with silver (Ag) in zirconium phosphate in the fiber manufacturing composition while forming a cross-section of the monofilament of the fiber to release. Has proposed a multifunctional fiber. However, according to the present invention, the content of silver relative to the total weight of the yarn is not sufficient to express antimicrobial properties, and the inorganic antimicrobial agent is simply dispersed in the composition for fiber production. There was a problem that the antibacterial activity is dropped from the drop.

In addition, conventionally sterilized fibers produced using silver was prepared by mixing a predetermined fiber manufacturing chip and a solid fine silver particles to produce a fiber or simply by coating the silver particles on the surface of the fiber. Patent No. 0573028 discloses a masterbatch in which colloidal silver in which silver particles are mixed in a colloidal form in a fiber manufacturing polymer is disclosed. Patent Publication No. 10-2004-0090362 prepares cotton using a mixture of a synthetic resin and a silver nanopowder. A method is disclosed. In addition, Patent No. 0532872 discloses a silver-containing method using the sol, gel method.

However, the manufacturing method as described above has a disadvantage that the fine silver particles are merely recessed in the fibrous structure and the silver particles cannot be uniformly dispersed in the fibrous structure. In addition, the method of coating the silver particles on the surface of the fiber can be easily peeled through a process such as washing because it does not form a strong bonding relationship, there was a disadvantage that it is difficult to maintain the sterilization power intact.

In the present invention, in order to solve the above problems, the antimicrobial activity that causes discoloration and discoloration of fibers or inhibits the penetration and proliferation of bacteria harmful to the human body to be maintained permanently, not only absorb sweat well absorbed sweat It is an object of the present invention to provide a multifunctional yarn having a wet quick-drying and easy to dry it.

The present invention is a multi-functional yarn having antimicrobial, sweat-absorbent quick-drying and UV-blocking, (i) 0.01 to 0.1 parts by weight of silver (Ag) compared to 100 parts by weight of the multi-functional yarn, (ii) the titanium dioxide (TiO ₂ ) content of 10000ppm or more has a UV protection function , (ii) the cross-section of the monofilament constituting the multi-functional yarn is a trilobal, (iii) using a silver (Ag) deposited polyester masterbatch as a raw material It is characterized by being manufactured.

In addition, the present invention provides a method for producing a multifunctional yarn having antibacterial, sweat-absorbent quick-drying and UV protection, (S1) a deposition step of depositing silver (Ag) to a thickness of 10 to 100 nm on the polyester masterbatch surface, ( S3) spinning the masterbatch on which the silver is deposited, and then spinning the monofilament through the three-sided deformed cross-section detention, and (S3) stretching and heat setting the melt-spun monofilament.

As described above, the multifunctional yarn prepared by the manufacturing method of the present invention is strongly deposited on the surface of the polyester masterbatch, so that the multifunctional yarn is melted and stretched, the fiber manufacturing process using the multifunctional yarn, and then the fiber using the multifunctional yarn. There is an effect that is not easily eliminated in the process, so the antimicrobial effect of the silver lasts forever. In addition, the multi-functional yarn of the present invention is composed of a three-layered cross-section of the monofilament constituting the multi-functional yarn is excellent in breathability, sweating, hygiene can be widely used as a variety of clothing fibers such as underwear and summer clothing.

The present invention provides a multifunctional yarn and a method for producing the same showing excellent sweat drying and antibacterial properties.

Silver (Ag) can kill about 650 bacteria and viruses. Silver disinfects germs by neutralizing the action of enzymes that help metabolism, such as digestion and respiration of single-cell germs, and the electrical load of releasing silver ions (Ag ⁺ ) removes germs, so they come into contact with silver. No bacteria can survive more than a minute. Silver (Ag) has a deodorizing function due to sterilization of odor-causing bacteria, mold prevention, and anti-corruption. Germs multiply very quickly at room temperature. Silver ion prevents the growth of bacteria, sterilizes and fundamentally blocks various odors caused by this, and deodorizes.

As described above, a method of manufacturing functional fibers having antimicrobial properties by applying silver with high antimicrobial activity to fibers is to inject and melt several micron-level silver (Ag) particles directly into the raw material to melt spinning together. Method was used. However, this has a problem that the filament is not uniform during spinning or the filament is easily cut off. Recently, a particle size of several hundred nanoscale silver (Ag) powder is melted and spun together with synthetic resin, which is the main raw material.However, when nanoscale silver (Ag) particles are used, aggregation between particles easily occurs, resulting in dispersibility. There is a problem of deterioration.

Therefore, the present invention allows the nano-level silver particles to be incorporated into the fiber by using a method of depositing silver (Ag) in the masterbatch, which is a raw material, and coagulation between silver particles is easy because silver (Ag) and polyester are firmly attached. The idea was to prevent it from happening.

In addition, in order to meet the needs for high-performance multifunctional fibers that perform various functions with a single material, the cross section of monofilaments constituting the multifunctional yarns has a trilobal shape to provide a multifunctional yarn provided with antibacterial and wet fast drying functions. It was.

The multifunctional yarn is prepared using (i) a polyester masterbatch having silver (Ag) deposited on the surface in a thickness of 10 nm to 100 nm, and (ii) the masterbatch blocks UV rays with a titanium dioxide (TiO ₂ ) content of 10000 ppm or more. It has a function, (iii) the cross section of the monofilament constituting the multifunctional yarn is a trilobal shaped cross section, (iii) the content of (Ag) is 0.01 to 0.1 parts by weight relative to 100 parts by weight of the multifunctional yarn .

Multifunctional yarn of the present invention is characterized in that it is produced using a masterbatch for fabrication in which silver nanoparticles are deposited. The masterbatch is made of synthetic resin for fiber production, and typically includes acrylic, polyester, polypropylene, nylon, and the like, and preferably includes 99 parts by weight or more of polyester based on 100 parts by weight of the masterbatch. In addition, the master batch may be used that further comprises titanium dioxide (TiO ₂ ) in the range of 1 to 3 parts by weight (1 to 3 wt%) relative to 100 parts by weight of polyester. The titanium dioxide (TiO ₂ ) is to be used for the purpose of reinforcing the unique luster of synthetic fibers, and to block ultraviolet rays.

1 is a flowchart illustrating a manufacturing process of a multifunctional yarn according to an embodiment of the present invention.

Hereinafter, the manufacturing method of the multifunctional yarn having antibacterial, wet fast drying and UV protection according to the present invention was described in detail.

Master batch fabrication with silver nanoparticles deposited

The multifunctional yarn manufacturing method includes (S1) depositing silver (Ag) nanoparticles in a masterbatch, (S2) melting the masterbatch on which silver is deposited, and spinning a monofilament constituting a multifunctional yarn, (S3) Stretching and heat setting the molten, spun monofilament. In addition, in the step (S2), in order to control the content of silver (Ag) of the final multifunctional yarn, silver (Ag) may be mixed with an appropriate amount of the master batch.

As a method of depositing the silver (Ag) nanoparticles on the surface of the masterbatch, chemical vapor deposition, or physical vapor deposition such as direct current / AC sputtering and ion plating may be used. The vapor deposition method is a method of depositing silver nanoparticles on a polyester masterbatch by depositing silver particles on the masterbatch surface by colliding the silver mass with a particle having energy by using an electron beam, an ion beam, and a direct current / AC plasma in a vacuum state. to be.

The deposition method will be described in more detail as follows. First, silver nanoparticles are deposited to a thickness of 10 nm to 50 nm on the polyester masterbatch surface, and then the mixed polyester masterbatch is mixed and restirred. Thereafter, coating is performed again with a thickness of 10 nm to 50 nm. When the silver nanoparticles are deposited in the same manner as described above, the silver nanoparticles are non-uniformly and discontinuously deposited on the master batch surface. To this end, a stirring device capable of mixing the masterbatch is essential, and the size and content of the nanoparticles generated can be controlled according to the sputtering conditions (target material, working vacuum degree, power, time, etc.).

Coating silver nanoparticles on the surface of the masterbatch during the process causes nuclei to form on the surface and grows to form a thin film. However, in the present invention, when the nucleus grows and meets the neighboring nuclei to form a thin film, that is, when grown to nanometer-sized particles, the growth of the nucleus is prevented by stirring the masterbatch, and the particles are kept in the nano size. That is, by rearranging and remixing the master batch, the average diameter of the silver particles deposited and grown on the surface of the master batch may be adjusted in nanometer units.

A process of drying the masterbatch may be performed before depositing the silver on the masterbatch surface. In addition, the method may further include a step of activating the surface of the masterbatch, wherein the activation process may be performed by an ion beam assisted reaction method, a DC / AC plasma or an electron beam reaction method.

<Production of multifunctional yarn>

Using the silver (Ag) deposition masterbatch prepared as described above to prepare a multifunctional yarn of the present invention. The multifunctional yarn of the present invention is completed by melting the silver (Ag) -deposited masterbatch and spinning a release cross-section filament through a three-layer special mold, and stretching and heat setting the radiated cross-section filament. The completed multifunctional yarn is wound and stored.

The multifunctional yarn is preferably 0.01 to 0.1 parts by weight of silver (Ag) relative to 100 parts by weight of the multifunctional yarn in order to exhibit the antimicrobial activity. The multifunctional yarn of the present invention may be prepared by melt spinning the master batch on which silver (Ag) is deposited alone, and also silver (Ag) is not deposited to control the content of silver (Ag) included in the final multifunctional yarn. Fiber masterbatches can be used in combination. For example, a masterbatch in which 0.1 parts by weight of silver (Ag) nanoparticles are deposited in a masterbatch and a full-dull chip in which silver is not deposited is melt-mixed at a ratio of 1: 4 to be included in the final multifunctional yarn ( The content of Ag) may be 0.02 parts by weight.

 The multifunctional yarn of the present invention is composed of six protrusions having different cross-sections of the monofilament, which is excellent in hygroscopicity because it serves as a passage for quickly discharging the sweat emitted from the human body to the outside. In addition, the multi-functional yarn of the present invention has a very large surface area in contact with the atmosphere is very excellent in the property of quickly evaporating the sweat discharged to the outside into the atmosphere. In addition, the multi-functional yarn of the present invention can prevent the phenomenon that the clothing is wound around the body even when a lot of sweat is discharged because the contact surface with the human body is excellent, the wearing comfort is excellent.

The cross-section filaments of the trilobal cross section may be prepared using a trilobal spinneret during melt spinning of the silver (Ag) deposition masterbatch. The trilobal spinneret is characterized by consisting of three branches extending from the spinneret center and six protrusions protruding from the left and right of the branch at the tip of the branch. 2 shows an example of the trilobal detention. Hereinafter, the trilobal detention was described in detail with reference to FIG. 1.

The ratio of the length (a / A) of the length a from the center of detention to the tip of the branch (a / A) to the width (A) between the two protrusions formed at one end of the branch and the width of the branch (b) to the length (B) of the projection ( When b / B) is less than 0.5, the angle of the trilobal filament becomes smaller or the ends of each protrusion are fused to each other, resulting in poor sweating effect, and the welded portion acts as a defect in the yarn, which is treated as a defect during dyeing process to provide high value yarn. Can not. On the contrary, when a / A and b / B are larger than 2.0, the space of each stone period in the filament is opened and water flows down rather than the water repellent and absorption effects.

In the case of a / A of 1.0 or less, the section surface is close to the Y-shape, and the filament becomes a general triangular section shape. When the ratio is 4.0 or more, the filament is fused with the surrounding filament and appears as a defect of the yarn. This reduces the trileaf effect. Therefore, the present invention can adjust the shape of the cross section in the spinning step to adjust the ability to absorb and discharge sweat or moisture to the desired degree.

In the production of the multifunctional yarn, it is important to prevent the silver (Ag) nanoparticles deposited in each step from falling off. The melt-spun multifunctional yarn is completed through the steps of stretching and heat setting, wherein the stretching ratio is preferably 1: 3. In order to maintain this, the linear velocity of the first gode controller set is preferably in the range of 1,000 to 4,000 m / min and the temperature of 30 to 100 ° C. If the linear velocity is 1,000 m / min or less, the orientation crystallization is reduced and the physical property change after winding is severe, and if the linear velocity is 4,000 m / min or more, there is a fear of the occurrence of high grain crystallization. On the other hand, it can be produced only by DR (Draw Ratio) without heating, but when producing stretched yarn, if it is 30 ° C or less, the yarn is in close contact with the first high-detro controller set, resulting in poor operability. Excessive fluctuations in the molecular chain can lead to poor operation. In addition, it is preferable that the linear velocity of the second gode controller set is in the range of 1,000 to 6,000 m / min, and the temperature is in the range of 50 to 200 ° C. In particular, it is preferable to set the linear velocity in consideration of the first high detro controller set and the target elongation, and to set the temperature in consideration of the target shrinkage ratio of the polyester drawn yarn. After winding, it is preferable to keep a drying temperature at 80 degreeC-130 degreeC for 8 to 10 hours, and to make moisture content into 30 ppm or less after drying. In addition, the drying process can be performed simultaneously with the mixing process.

Example 1 Preparation of Silver (Ag) Deposited Fiber Manufacturing Chip

20 kg of pullulic chips (99% by weight of polyester and 9% by weight of titanium dioxide (TiO ₂ )) as a fiber batch masterbatch were dried under conditions of a vacuum degree of 2 × 10 ⁻⁴ and surface-treated using an ion beam. Thereafter, silver (CERAC, width 4 inches, thickness 1/4 inch, purity 99.99 wt%) was deposited using a direct current sputtering device. At this time, the deposition rate was set to 0.5 s / sec to adjust the deposition thickness to 100 nm. Argon gas was used as the sputtering gas. The injection amount of argon gas was performed in the range of 10 ^-1 to 10 ^-4 torrdml. After sputtering for 10 minutes, the masterbatch was rearranged / remixed to move the masterbatch where no silver was deposited to the upper layer. This cycle was repeated 2 to 50 times to prepare a polyester masterbatch on which silver was deposited.

Example 2. Preparation of Multifunctional Yarn

The multifunctional yarn of the present invention was manufactured using the chip prepared in Example 1. 10 kg of the chip prepared in Example 1 and 10 kg of the chipless chip (99% by weight of polyester, containing 9% by weight of titanium dioxide (TiO ₂ )) were mixed and melted at 280 ° C., followed by the three-phase spinning shown in FIG. 1. Spun through detention. After spinning, the draw ratio was set to 1: 3 using a gode controller to draw and heat set to prepare a multifunctional yarn of the present invention.

1 is a flow chart showing a multi-functional yarn manufacturing process of the present invention in order;

Figure 2 is a view showing a cross section of the monofilament constituting the multifunctional yarn of the present invention,

3 is a photograph of a masterbatch deposited with silver (Ag),

4 is a cross-sectional view of a multifunctional yarn prepared using silver (Ag) nanoparticle deposition masterbatch.

Claims (9)

As a multifunctional yarn with antibacterial, sweat-absorbent quick-drying and UV protection, (Iii) 0.01 to 0.1 parts by weight of silver (Ag) relative to 100 parts by weight of the multifunctional yarn, (Ii) the masterbatch is a titanium dioxide (TiO2) content of more than 10000ppm has a sunscreen function , (Ii) the cross section of the monofilament constituting the multifunctional yarn is trilobal, (Iii) A multifunctional yarn comprising a silver (Ag) deposited polyester masterbatch as a raw material. The method of claim 1, The cross section of the monofilament is a multi-layered yarn consisting of three branches extending from the center of the cross section and six projections protruding from the left and right of the branch at the end of the branch. The method of claim 2, The trilobite has a ratio (a / A) of the length a from the center of detention to the tip of the branch (a / A) and the width of the branch (B) with respect to the length of the protrusion (B). The ratio (b / B) of 0.5) is 0.5-2.0, and the ratio of the width | variety (A) of protrusion with respect to the width | variety (b) of a branch is 1.0-4.0, The multifunctional yarn characterized by the above-mentioned. The method of claim 1, The silver (Ag) deposited polyester masterbatch multifunctional yarn, characterized in that containing 3 to 9 parts by weight of titanium dioxide (TiO ₂ ) relative to 100 parts by weight of polyester. The method of claim 1, The silver deposited polyester masterbatch is 10 to 100 nm on the polyester masterbatch surface The multifunctional yarn characterized by depositing silver (Ag) by thickness. The method of claim 5, The masterbatch is a multifunctional yarn manufacturing method, characterized in that containing 1 to 3 parts by weight of titanium dioxide (TiO ₂ ) relative to 100 parts by weight of polyester. The method of claim 5, The cross section of the monofilament is a multi-layered yarn manufacturing method comprising three branches extending from the center of the cross section and six projections protruding from the left and right of the branch at the end of the branch. The method of claim 7, wherein The trilobite has a ratio (a / A) of the length a from the center of detention to the tip of the branch (a / A) and the width of the branch (B) with respect to the length of the protrusion (B). The ratio (b / B) of 0.5) is 0.5-2.0, and the ratio of the width | variety (A) of a process with respect to the width | variety (b) of a branch is 1.0-4.0. A multifunctional yarn manufactured by using a master batch on which silver (Ag) nanoparticles prepared by the manufacturing method according to any one of claims 5 to 8 are deposited.

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