KR20060087685A - Air textured yarn with excellent absorption-dry property and antibiotic property - Google Patents

Abstract

The present invention relates to an air entangled yarn having excellent antibacterial property and quick-drying and quick-drying, (i) two multifilaments composed of monofilaments of thermoplastics are air entangled to form an entanglement point of 80 or more / m, and (ii) The monofilaments have six spherical protrusions symmetrically formed two symmetrically on the upper surface, two on the lower surface, one on the left side, and one on the right side, based on the long axis length L ₁ of the cross section of the monofilament. (B) the average particle diameter is 0.1 µm to 1.0 µm, and the silver-based inorganic antimicrobial agent in which zirconium phosphate, which is an inorganic carrier, is substituted with silver, contains 0.3 to 2.0% by weight of the total yarn weight; It is characterized by being dyed in a yarn state.

The present invention can effectively prevent the collapse of the four layers during the dyeing, and quickly absorb the sweat emitted from the human body, and then spread quickly to a large surface area to dry quickly, causing the discoloration and discoloration of fibers and harmful bacteria It is useful as a yarn for clothing such as sports clothes by simultaneously possessing antibacterial function that inhibits penetration and proliferation of

Dead salt, air entangled yarn, antimicrobial, quick drying sweat, monofilament, antibacterial agent, cross section, silver, zirconium phosphate.

Description

Air textured yarn with excellent absorption-dry property and antibiotic property             

1 is a process schematic diagram of manufacturing each multifilament excellent in the antibacterial and sweat-absorbent quick-drying of the present invention.

2 is a process schematic diagram of air entanglement of two multifilaments;

Figure 3 is a schematic cross-sectional view of the monofilament constituting the multifilament of the present invention.

Figure 4 is an enlarged cross-sectional view of the spinneret used in the present invention.

5 and 6 is a schematic cross-sectional view of a conventional cross-sectional cross-sectional yarn.

Figure 7 is a schematic diagram of a portion of the water diffusion in the sample when measuring the absorption area in the dropping method application method.

* Explanation of symbols on the main parts of the drawings

1: Polymer chip feed pipe 2: Side feeder

3: extruder 4: spinneret

5: cooling chamber 6: focusing guide

7: 1st gourd roll 8: 2nd gourd roll

9: winder 10: air nozzle                 

10a: air inlet 11: guide roller

A, A ': Multifilament B: Air entangled yarn

L ₁ : long axis length of the monofilament cross section

L ₂ : short axis length of monofilament cross section

L ₃ : Center distance in the major axis of the monofilament cross section

D ₁ : short axis width of monofilament cross section

a: the maximum width of the portion where water is diffused in the sample

b: minimum width of water diffusion in the sample

The present invention not only absorbs sweat well when used as a yarn for clothing, especially a sports garment, and easily dries the absorbed sweat (hereinafter referred to as "absorbent quick-drying") and causes discoloration and discoloration of fibers or is harmful to the human body. The present invention relates to an air entangled yarn (honsum yarn) having a function of inhibiting bacterial invasion and proliferation (hereinafter referred to as "antibacterial").

As the standard of living improves recently, the demand for clothing with various functionalities is expanding. In other words, there is a need for clothing having sweat fast drying and antibacterial properties as well as simple physical and chemical durability. Conventionally absorbent cotton yarn or cotton / polyester blend yarn has been mainly used as a garment yarn, but when the sweat is much, the yarn contains a lot of sweat, so it is not only moist and cold but also the clothes are wound around the body and sticky. There was a problem that the fiber discolored or discolored by bacteria and sweat or odor when worn for a long time.

Meanwhile, US Pat. No. 4,470,407 proposes a polyester mold-shaped cross-section yarn having a shell-like cross section as shown in FIG. 5 to improve the water diffusibility of yarn as a prior art for improving sweat absorption and dryness. -7736 proposes a sectional cross-section yarn in which three to five spherical protrusions are formed at equal intervals as shown in FIG. The conventional release section yarns have only two to five protrusions that serve as a passage for discharging sweat, and thus have insufficient problems of sweat absorption and dryness, and have no problem of antibacterial activity.

On the other hand, Korean Patent Laid-Open Publication No. 2002-71522 proposes a sectional cross-section yarn in which six spherical protrusions are formed symmetrically as shown in FIG.

As a conventional technique for imparting antimicrobial properties to fibers, a method of imparting antimicrobial properties by immersing the fabric in an antimicrobial solution is widely used, but in this case, the antibacterial function is lost after washing 10 times or more, that is, there is a problem of low washing resistance. .

As another conventional technique for imparting antimicrobial properties to fibers, a method of copolymerizing a copolymer component containing an antimicrobial active material into a polymer resin, which is a fiber material, a method of blending a fine antibacterial agent inside the polymer resin, and the like are also used.                         

As antibacterial agents, natural antibacterial agents such as chitosans, and inorganic antimicrobial agents having silver or photocatalyst functions are used, but inorganic antimicrobial agents that can withstand during high-temperature spinning processes are more widely used.

The above-described methods may impart antimicrobial activity to the fiber, but have poor laundry resistance, and at the same time, may not impart sweat absorption and dryness.

An object of the present invention is to provide an air entangled yarn which is excellent in sweat-absorbing quick drying and antimicrobial at the same time, and can effectively prevent the four-layer collapse during the dead salt in order to solve these problems.

The present invention forms a cross section of the monofilaments constituting the air entangled yarn in a shape in which six spherical protrusions are symmetrically formed as shown in FIG. By dispersing and containing a silver-based inorganic antimicrobial agent (diameter: 0.1-1.0 μm) substituted with silver (Ag), it is intended to give antibacterial activity to the air entangled yarn without deterioration of the operability.

In addition, the present invention is to effectively prevent the four-layer collapse during salting by air entanglement of the two multifilament.

Air entangled yarn of the present invention for achieving the above object is (i) two multifilaments composed of monofilaments of thermoplastic resin are air entangled to form an entanglement point of 80 or more / m, (ii) the monofilament The six spherical projections have a heterosymmetric cross-section formed symmetrically by two on the upper surface, two on the lower surface, one on the left side and one on the right side, based on the long axis length (L ₁ ) of the monofilament cross section. (Iii) The average particle diameter is 0.1㎛ ~ 1.0㎛, zirconium phosphate inorganic inorganic antimicrobial agent with silver (Ag) is contained 0.3 ~ 2.0% by weight relative to the total weight of the yarn, (iv) It is characterized by being dyed.

Hereinafter, the present invention will be described in detail with reference to the drawings.

First, the present invention is an air entangled and salt-treated air entangled two multifilaments composed of monofilaments of thermoplastic resin. The cross section of the monofilament is symmetrically formed six spherical projections of different sizes as shown in FIG. More specifically, the cross section of the monofilament is symmetrical six spherical projections on the upper surface, two on the lower surface, one on the left side, one on the right side based on the long axis length (L ₁ ) of the monofilament cross section Is formed by enemy. It is preferable that the ratio of the short axis length (L ₂ ) of the monofilament cross section to the short axis width (D ₁ ) of the monofilament cross section is 1.0 to 4.0. When the L ₂ / D ₁ ratio is less than 1.0, the sweat absorptive quick drying may be lowered. When the L ₂ / D ₁ ratio is greater than 4.0, the sweat absorptive fast drying and operability may be reduced.

In addition long-axis length of the monofilament cross-section (L ₁₎ / shortening of the monofilament cross-section (L ₂₎ ratio is preferably from 1.0 to 4.0. If it is out of the above range, the operability and the quick drying rate may be lowered.

In the present invention, as the thermoplastic resin, polyamide, polyester, or polyacryl may be used, and more preferably, hydrophobic polyester is used.

The air entangled yarn (yarn) of the present invention is very excellent in hygroscopicity because the six projections of different sizes serve as a passage for quickly discharging the sweat emitted from the human body to the outside. In addition, the air entangled yarn (yarn) of the present invention has a very large surface area in contact with the atmosphere, which is very excellent in the property (fast drying) to quickly evaporate the sweat discharged to the outside into the atmosphere.

In addition, the air entangled yarn (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 due to the small contact surface with the human body is excellent in wearing comfort. The air entangled yarn (yarn) of the present invention may be used alone or in combination with cotton or polypropylene yarn, mainly used in the manufacture of garments such as jackets.

On the other hand, the air entangled yarn (yarn) of the present invention contains a silver inorganic inorganic antimicrobial agent having an average particle diameter of 0.1 ~ 1.0㎛ 0.3 ~ 2.0% by weight relative to the total yarn weight.

The silver inorganic antibacterial agent is an antimicrobial agent in which silver (Ag) is substituted for zirconium phosphate (ZrO ₂ P ₂ O ₅ ), which is an inorganic carrier, and is a product of "NOVARON" (product name) manufactured by Dong-A Synthetic Co., Ltd., a Japanese company. .

The silver-based inorganic antimicrobial agent inhibits the metabolic function required for the maintenance of life by the action of silver ions and generates free radicals (· O ₂ ) in the presence of water and light to destroy bacterial cell membranes.

If the average particle diameter of the silver-based inorganic antimicrobial agent exceeds 1.0 μm, it is difficult to produce fine yarns of less than 2 denier, and the spin pack pressure is greatly increased, resulting in a significant drop in the full-drum rate. The dispersibility of the product is poor, the workability is lowered and the cost is high.

On the other hand, if the content of the silver-based inorganic antimicrobial agent in the yarn exceeds 2.0% by weight, the manufacturing cost is expensive, poor dispersibility, poor operation, and less than 0.3% by weight can not obtain sufficient antibacterial function.

The multifilament forming the air entangled yarn of the present invention can be produced through the process as shown in FIG. 1 is a process schematic diagram of producing a multifilament of the present invention.

Specifically, the thermoplastic polymer chip (hereinafter referred to as a "master batch chip") to which the silver-based inorganic antimicrobial agent is added while supplying the thermoplastic polymer chip to the extruder 3 through the thermoplastic polymer chip conveying pipe 1 is referred to as a side feeder. (2) is supplied to the extruder (3) together. Subsequently, the thermoplastic polymer chip supplied from the extruder 3 and the thermoplastic polymer chip (master batch chip) to which the silver inorganic antibacterial agent is added are melted and mixed together.

Subsequently, the molten polymer is melt-spun through the spinneret 4 having the cross section as shown in FIG. 4, and then cooled by the cooling chamber 5, and the first gourd roll 7 is passed through the focusing guide 6. After stretching between the second gourd roll (8) can be wound up with a winder (9) to produce a multifilament forming the air entangled yarn of the present invention.

It is preferable that the temperature of the 1st gourd roll 7 is about 85 degreeC, and the rotational linear speed is about 1,500 m / min.

It is preferable that the temperature of the 2nd goth roll 8 is about 123 degreeC, and the rotational linear velocity is about 4,300 m / min.

The winding speed of the winder 9 is preferably about 4,200 m / min.

However, in the present invention, the linear linear velocity and temperature of the first gouge roll 7, the second gouge roll 8, and the take-up machine 9 are not particularly limited.

At this time, rather than directly injecting the silver-based inorganic antimicrobial agent to the extruder (3) to produce a master batch chip as described above and to supply it to the extruder (3) through the side feeder (2) dispersibility of the antimicrobial agent It is more preferable for operability.

Next, the air entangled yarn of the present invention can be produced by air entangled as shown in FIG. At this time, the entanglement formed by air entanglement is formed to more than 80 / m, the winding tension is minimized within the level that does not collapse.

If the entanglement point is less than 80 / m, a problem occurs that the four layers easily collapsed when salting.                     

Next, the air entangled yarn prepared as described above is dyed under ordinary dyeing conditions to prepare a dyed air entangled yarn.

In the case of dyeing, the air entangled yarn wrapped in cheese is taken out and inserted into a spool for dyeing, then dyed, and the yarn is removed from the spool and put back into the cheese.

Air entangled sand of the present invention is 99.00 ~ 99.99% bacteriostatic reduction measured by KS K 0693-2001 method, the bacteriostatic activity is 2.2 ~ 6.3.

In addition, the air entangled yarn of the present invention is 100 ~ 185mm / 10 minutes, and the absorption area measured by the dropping method application method is 8 ~ 14 cm 2/30 seconds measured by the Wicking Test (Wicking Test).

In addition, the air entangled yarn of the present invention has a time (drying time) of 20 to 40 minutes until 0.05 ml of water in the yarn is completely dried.

In the present invention, the operability and various physical properties of the yarn were measured (evaluated) as follows.

Operability (F / D ratio)

The total number of drums produced in the spinning process is determined by the ratio of full drums.                     

Bacteriostatic reduction rate (%) / bacteriostatic activity value

Prepare the control specimens and test specimens according to KS K 0693-2001 method, and incubate the bacteria in each of them for 18 hours, then incubate for 18 hours, and then count the viable cells (Ma) and control cells (Mb) after 18 hours of culture. After calculating these values, substitute these values into the following formula to calculate the bacteriostatic reduction rate (%) and bacteriostatic activity, respectively.

Bacteriostatic activity = log Ma-log Mb

Absorbent

(Ⅰ) Absorption rate (mm / 10 minutes)

Measured by KS K 0815.5.27 method, Wicking Test. Using the air entangled yarn of the present invention, after the circular knitted paper is knitted in a 32-gauge interlock double-sided circular knitting machine, the sample is prepared by cutting it into 2.5 cm wide and 20 cm long. One part of the fabric sample was immersed in water for 2.5 cm and then left for 10 minutes, and the average value was obtained by measuring the height of moisture absorbed in the fabric three times.

(Ii) Absorption area (cm 2/30 minutes)

Measured by drip application method.

A sample of a circular letter (20 ㅧ 20 cm) manufactured by the air entangled yarn of the present invention was covered and fixed on a 7.5 cm diameter cylindrical tube. After 0.05 ml of water was dropped thereon, water was diffused into the sample after 30 seconds. The maximum width (a) and the minimum width (b) of the part are measured, and the absorption area is calculated by substituting the measured values (a, b) into the following equation.

Quick-drying: drying time (minutes)

Using the air entangled yarn of the present invention, the circular knitted paper is knitted in a 32-gauge interlock double-sided circular knitting machine, and then it is chopped to 20 cm wide by 20 cm long to prepare a sample. After dropping 0.05 ml of water onto the fabric sample, the time required for complete drying was measured to obtain a drying rate.

At this time, air conditioning conditions were made into 20 degreeC 65% RH.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited only to the following examples.

Example 1

A polyester chip containing a silver-based inorganic antimicrobial agent (brand name: NOVARON) in which a polyester chip is supplied to the extruder 3 through a transfer pipe 1 and silver is substituted for zirconium phosphate, an inorganic carrier (brand name: NOVARON). The batch chip) is supplied to the extruder 3 through the side feeder 2, and then mixed and melted to prepare a spinning solution.                     

At this time, the content of the inorganic silver antimicrobial agent in the spinning solution was 0.5% by weight.

Subsequently, the produced spinning solution was spun through the spinneret of FIG. 4 at a spinning temperature of 289 ° C. (discharge amount: 35.1 g / min), and solidified with a cooling wind having a wind speed of 0.5 m / sec. (Rotational linear speed: 1,500m / min) and the second gourd roll (rotary linear velocity: 4,300m / min) at 125 ℃ continuously and wound up at a speed of 4,200m / min to [L ₁ / L ₂ ] A multifilament of 75 denier / 24 filaments having a ratio of 2.5 and a [L ₂ / L ₁ ] ratio of 1.5 was prepared. Next, two multifilaments manufactured as described above are supplied to an air entanglement apparatus as shown in FIG. 2 to air entangle them to form an entanglement point of 85 / m to manufacture an air entangled yarn.

Next, the air entangled yarn is dyed to a silver color by a normal saline process.

Using a salted air entangled yarn in a 32-gauge interlock double-sided circular knitting machine was cut into 26-inch diameter circular knitted fabric and dyed to prepare a processed circular knitted fabric.

The results of evaluating various physical properties and operability of the manufactured air entangled yarn and circular knitted fabric are shown in Table 2.

Example 2 and Comparative Examples 1 to 3

The cross-sectional shape of the monofilament, the type and content of the antimicrobial agent were changed as shown in Table 1, except that the multifilament and its circular knitted fabric were prepared in the same manner as in Example 1 except that the air entangled yarn manufacturing process was not performed.                     

The results of evaluating various physical properties and operability of the manufactured multifilament and circular knitted fabric are shown in Table 2.

Manufacture conditions division Monofilament Cross Section Antimicrobial Number of entangled points (pcs / m) Kind (product name) Content in spin dope (% by weight) Example 1 3 Silver inorganic antimicrobial agent (NOVARON) substituted with silver in zirconium phosphate 0.5 85 Example 2 3 Silver inorganic antimicrobial agent (NOVARON) substituted with silver in zirconium phosphate 0.7 90 Comparative Example 1 circle Silver inorganic antimicrobial agent (NOVARON) substituted with silver in zirconium phosphate 0.4 - Comparative Example 2 circle Silver Zeolite Antibacterial Agent 0.7 - Comparative Example 3 circle Glass Antibacterial Agent 0.7 -

Property evaluation result division Four layers of collapse Antimicrobial activity Absorbency Quick dry Bacteriostatic rate (%) Bacteriostatic activity Absorption rate (mm / 10 minutes) Absorption Area (㎠ / 30 minutes) Drying time (minutes) Example 1 none 99.9 5.6 135 10.6 28 Example 2 none 99.9 6.3 145 13.2 32 Comparative Example 1 plenty 98.0 2.0 67 5.2 52 Comparative Example 2 plenty 99.1 2.2 58 4.4 54 Comparative Example 3 plenty 99.0 2.0 62 4.8 62

In the present invention, there is no disruption of the four layers during the dyeing, excellent sweat absorption and quick drying, and excellent antibacterial activity.

As a result, the fibers are not discolored or discolored by the bacteria, and there is no bad smell even when worn for a long time, which is hygienic and comfortable.

As a result, the present invention is useful as a yarn for clothes such as sports clothes.

Claims (7)

(Iii) two multifilaments composed of monofilaments of thermoplastic resin are air-entangled to form an entanglement point of 80 or more, and (ii) the monofilaments have six spherical protrusions having a long axis length of a monofilament cross section ( L ₁ ) has a heteromorphic cross section symmetrically formed on the upper surface, two on the lower surface, two on the lower surface, one on the left side and one on the right side, and (iii) has an average particle diameter of 0.1 μm to 1.0 μm. Silver-based inorganic antimicrobial agent with silver (Ag) in the zirconium phosphate, which is an inorganic carrier, contains 0.3 to 2.0 wt% of the total weight of the yarn, and (i) is dyed in the yarn state. Air trap. 2. The monoaxial length of the monofilament cross section (L ₂ ) is 1.0 to 4.0 times the monoaxial length of the monofilament cross section (D ₁ ), and the monoaxial length of the monofilament cross section (L ₁ ) ₂ ) Air entangled yarn with excellent antibacterial and quick drying properties, characterized in that 1.0 ~ 4.0 times. The air entanglement yarn of claim 1, wherein the thermoplastic resin is a polyester resin. The air interlock yarn according to claim 1, wherein the bacteriostatic reduction rate is 99.00 to 99.99% and the bacteriostatic activity is 2.2 to 6.3 as measured by KS K 0693-2001. The air entangled yarn having excellent antibacterial property and quick-drying and quick drying property according to claim 1, wherein the absorption rate is 100 to 185 mm / 10 minutes as measured by the Biking method. The air entangled yarn having excellent antibacterial property and quick drying rate of dryness according to claim 1, wherein the absorption area measured by the dropping method application method is 8 to 14 cm 2/30 seconds. The air entangled yarn having excellent antibacterial property and quick drying property according to claim 1, wherein the time taken until 0.05 ml of water is completely dried is 20 to 40 minutes.

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