KR101721385B1 - High elastic polyester composite yarn having antibacterial activity and preparation method of fabric using the same - Google Patents

Abstract

The present invention relates to a highly elastic polyester composite yarn using a latent-crimp yarn as a core and antibacterial polyester yarn as a sheath. The present invention further relates to a production method thereof. More specifically, the present invention relates to highly elastic antibacterial polyester composite yarn, which ensures cost-competitiveness, excellent textures, antibacterial functions, and high elasticity, by using a polytrimethylene terephthalate (PTT)/poly(ethelyene terephthalate) (PET) latent-crimp yarn as a core and an antibacterial polyester yarn as a sheath. The present invention further relates to a method for producing a fabric using the same.

Description

TECHNICAL FIELD [0001] The present invention relates to a high-elasticity polyester composite yarn having antibacterial properties and a fabrication method using the same,

The present invention relates to a high stretch composite yarn using a polyester as a sheath and a method of manufacturing the same by using a pottery bar as a core and specifically a PTT / Polyester Composite Yarn with High Elasticity, Antibacterial Property and Feeling and Cost Competitiveness by Using Polyester Yarn Using Antimicrobial Agent as an Examination will be.

Traditionally, stretch fabrics have been used mainly as stretchy materials with high activity, but recently they have become very popular as a fashion material, and they have been widely used in various applications such as suits, pants, and shirts.

Conventionally, a method of manufacturing a stretchable fabric using a false-twist yarn has been disclosed in Korean Patent Publication No. 1992-25482, but this method has a problem in that the stretchability of the false-twist yarn is limited, thereby lowering the high stretchability of the fabric. In addition, as a method for producing a polyester yarn having stretchability, an example using a single yarn of a high viscosity / low viscosity polyester potential bar has been known. For example, Japanese Laid-Open Patent Publication No. 2000-160443 discloses a conjugated type conjugate fiber comprising a high viscosity polyester containing an ethylene terephthalate unit and a third component copolymerized therein and a low viscosity polyester consisting of only an ethylene terephthalate unit . The composite fibers were cooled and discharged at a predetermined drawing speed to improve the stretchability. However, since the composite fibers were produced only by the high-viscosity and low-viscosity polyester pottery, there was a problem in that the cost was high, Have.

Another conventional invention is a method for enhancing elasticity and extensibility by inherent crimp property of a crimped filament yarn using examination and warp yarn. However, in the above conventional methods, It has been pointed out that it is difficult to increase the interlocking strength of the fibers, and thus it is difficult to produce a composite workpiece.

Conventional polyester composite yarns are produced by partially entangling a partially oriented yarn (POY) and a fully oriented yarn (FOY) with each other by air entanglement, so that a spun composite construction Has been widely used. Also, for the unique surface effect of the polyester composite yarn, a method of producing a composite yarn by using polyester fiber produced by containing a large amount of inorganic particles in a sheath, or by using acetate, rayon, .

However, the polyester composite yarn produced by the above method is excellent in bulky property and touch property because the fiber having a low shrinkage ratio is exposed to the outside as the shrinkable filament yarn, but it is difficult to impart a separate function, and sufficient stretchability Lt; / RTI >

The present inventors have made efforts to solve the problems of the prior art. As a result, the inventors of the present invention have examined the potency of polytrimethylene terephthalate (PTT) and polyethylene terephthalate (PET) Stretch polyester conjugate yarn made of polyesters containing polyesters was prepared, and a fabric and a knitted fabric were manufactured using the same, and the mechanical properties were confirmed from the product to complete the present invention.

Korean Patent Publication No. 10-2011-0077532

In consideration of the functional properties and the texture and drape properties of the fabric, the polyester containing an inorganic antimicrobial agent is selected as a starting material and the first heat treatment And a method for producing a highly stretched polyester composite yarn having antimicrobial properties through a second heat treatment at non-contact.

In order to satisfy various functional characteristics at the same time while having high elasticity, various conditions of mechanical change were changed to enhance the migration of yarn. The present invention also relates to a method for producing fabrics and knitted fabrics using the high-stretch polyester composite yarn excellent in functionality and price competitiveness manufactured by such a method.

In order to attain the above object, the present invention provides a method for evaluating a PTT / PET pot housing having a mono denier of 0.7 to 3.5 denier and a total denier of 30 to 100 denier, wherein the mono denier is 0.05 to 4.0 denier, The polyester yarn containing an inorganic antibacterial agent having a denier of 30 to 150 denier is subjected to a primary heat treatment and a non-contact secondary heat treatment using a warp yarn as a warp yarn to produce a high stretch polyester conjugated yarn.

The high-stretch polyester composite yarn comprises 20 to 50% by weight of PTT / PET pottery as an examination and 50 to 80% by weight of polyester yarn containing an inorganic antibacterial agent as a superabrasive.

The high stretch polyester composite yarn is produced by air entanglement with a frequency of at least 40 to 80EA / M.

In addition, the present invention relates to a method for dyeing a fabric, which is produced by weaving a high-stretch polyester composite yarn using warp or weft yarns or fabricated by knitting, at a temperature of 100 to 130 DEG C for 2 to 5 hours, And then dyeing the polyester fabric.

The yarn for weaving or knitting according to the present invention can be produced by drawing a high stretch polyester composite yarn at 600 to 2,000 TPM.

INDUSTRIAL APPLICABILITY As described above, the present invention provides a high stretch polyester composite yarn having a core-sheath structure made of polyester containing an inorganic antibacterial agent having functional properties, The fabric produced by weaving or knitting using a high stretch polyester composite yarn as warp or weft yarn has excellent effects of high stretchability, antibacterial property, soft touch, softness and the like. Especially, it is possible to weave or knit high sensitive fabrics having excellent drape characteristics and soft touch feeling

1 is a structural view of an apparatus for manufacturing a high stretch polyester composite yarn according to the present invention.
Fig. 2 is a view showing a manufacturing process of a high stretch polyester composite yarn according to the present invention.
3 is an enlarged photograph (b) of an apparatus (a) for manufacturing a high stretch polyester composite yarn, a second stretching roller 9 and a linear velocity control roller 10 according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed exemplary embodiments, but is capable of other various forms of implementation. The following examples are intended to be illustrative of the present invention, Is provided to fully inform the user. Also, for convenience of explanation, the components may be exaggerated or reduced in size.

In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Therefore, the experimental examples of the present invention should not be construed as limited to the specific shapes of the regions shown in this specification, and should include, for example, changes in the shape resulting from manufacturing.

The present invention relates to an inorganic antibacterial agent having a monodendear of 0.7 to 3.5 denier and a total denier of 30 to 100 denier and a monodendear of 0.05 to 4.0 denier and a total denier of 30 to 150 denier, Stretch polyester composite yarn having a total denier of 60 to 250 denier produced by using a polyester yarn as a warp yarn.

PTT / PET potential barn (1) is produced by composite spinning PET and PTT having a specific melt viscosity difference, which is a polyester component, with a special spinning nozzle at a constant weight ratio. PTT is a Polytrimethyleneterephthalate fiber which shows the characteristics of polyester basically but shows elasticity which does not appear in PET (Polyetyleneterephthalate) due to its flexible molecular chain and is characterized by its own soft feel, . At this time, since the PTT fiber imparts bulkiness without being subjected to a twisting process, it is suitable for use in a side-by-side type or core-sheath type polyester based conjugate fiber including polyester.

The antimicrobial polyester fiber is generally coated with an antimicrobial agent in a yarn manufacturing process, or is coated or adhered to the antimicrobial agent by post-processing on a woven / knitted fabric using a general yarn. The antibacterial agent to be applied may be classified into an organic or inorganic type. The antibacterial polyester source of the present invention includes an inorganic antibacterial agent in a yarn manufacturing process.

The inorganic antibacterial agent of the present invention is prepared by preparing a mixed solution by mixing an aluminum sulfate solution in which aluminum sulfate is dissolved in water and a slurry in which a calcium salt is mixed in water to hydrothermally synthesize calcium aluminum sulfate, Which is an inorganic antibacterial agent. Wherein the antimicrobial metal ion is a salt that contains at least one selected from the group consisting of nickel (Ni), cobalt (Co), zinc (Zn), chromium (Cr), silver (Ag) It can be used in the form of

The inorganic antibacterial agent is mixed and extruded with a polyester chip to prepare a master batch chip. To prepare the master batch chip, at least one additive such as a dispersant, a softener, an absorbent, etc., which are generally used, may be included.

The master batch chip and the polyester chips produced in the above manner are mixed and spin-spinned in a general manner to produce polyester fibers containing 0.2 to 3.0% by weight of an inorganic antibacterial agent.

The high stretch polyester composite yarn of the present invention is produced by using a polyester yarn (2) containing an inorganic antibacterial agent as a warp yarn and examining the PTT / PET potential yarn stock (1) (See Fig. 1).

More specifically, in the high stretch polyester composite yarn of the present invention, the total denier of the PTT / PET potting housing 1 is 30 to 100 denier and the thickness of the mono denier is 0.7 to 3.5 denier . If the thickness of the single yarn of the PTT / PET pot housing is less than 0.7 denier, the production is not easy. If the single yarn thickness exceeds 3.5 denier, the stretchability and drape property are lowered.

In addition, if the total denier of the PTT / PET potential housing (1) is less than 30 denier, the drape and stretchability are poor. If the denier exceeds 100 denier, the PTT / PET pottery housing on the surface of the high- The surface of the fabric tends to be tacky and unfavorable in appearance.

(2) yarn comprising an inorganic antibacterial agent having a total denier of 30 to 150 denier and a monodendric denier of 0.05 to 4.0 denier in the case of the other component (2).

A polyester (2) yarn containing a superabsorbent inorganic antibacterial agent has a mono-denier thickness of 0.05 to 4.0 denier. When the denier is less than 0.05 denier, there is a problem that the dyeing is not clear. When the denier is more than 4.0 denier, .

Also included are inorganic antimicrobial agents The polyester yarn preferably has a strength of 1.5 to 3.5 g / denier, an elongation of 25 to 35%, a uniformity (U%) of 0.5 to 1.0, and a boiling water shrinkage ratio (Sr) of 10% or less.

That is, in the case of a polyester yarn whose strength is out of the above range, there is a problem in the weaving property. The elongation is most excellent in dimensional stability, drapeability and touch when weaving or knitting using polyester yarns within the above range. The strength and elongation can be measured using an automatic tensile tester (Textechno) at a speed of 50 cm / min and a grip distance of 50 cm.

The elongation of the polyester yarn including the antimicrobial agent derived from the natural product used as the warp yarn directly affects the stretchability and stretch recovery rate of the fabric immediately after the yarn. That is, when the warp elongation is in the range of 25 to 35%, the fabric produced after the composite yarn has excellent properties of stretchability and expansion / contraction recovery ratio.

It is preferable that the uniformity (U%) has a value of 0.5 to 1.0. When the uniformity is 1.0 or more, the appearance of the fabric after weaving or knitting becomes poor. When the uniformity is 0.5 or less, defects such as yarn breakage may occur in the weaving or knitting process. The uniformity was measured by a Uster Evenness Tester (type C) for 1 minute under conditions of a yarn speed of 25 m / min, a specification range of ± 12.5% and a chart speed of 5 cm / min for 1 minute, Can be measured.

In the case of a polyester yarn having a boiling water shrinkage ratio of 10% or more, shrinkage characteristics are excellent, but the shrinkage effect may be reduced in a post-processing step. After to the boiling water shrinkage ratio (Sr) is denier yarn volume in the creel recovery 10 circuits made of a pincushion, sweet (indicated fineness × 1 / 20g) and constant load (shown fineness × 2g) of the early summer to the pincushion the length L ₀ . The thread is thermally treated at 100 ° C for 15 minutes, removed, and left for 12 hours in a room after removing the water by absorbing moisture. The length of the thread is measured by applying a static load and a static load (L ₁ ). The boiling water shrinkage ratio Sr can be calculated by substituting the measured values into the following equations.

In the case of a woven or knitted fabric using the highly stretched polyester composite yarn of the present invention produced by using polyester yarn having the above-mentioned physical properties as a superabsorbent yarn, a highly sensitive fabric Of weaving or knitting. .

If the total denier of the high stretchable polyester composite yarn is less than 60 denier, the PTT / PET pottery bulb protrudes on the surface of the high stretch polyester composite yarn, and the surface of the fabric is poor in appearance and appearance, If it exceeds 250 denier, there is a problem that stretchability is poor, which is not preferable for the application of woven fabrics and knitted fabrics.

The PTT / PET potting housing 1 used in the present invention is produced by using two kinds of polymers having different heat shrinkability, and preferably a PTT having an intrinsic viscosity of 0.9 to 1.2 and a PET having an intrinsic viscosity of 0.4 to 0.55. -Simultaneously radiating in side-by-side or sheath-core structure, heat is given in the spinning process and stretching process, causing heat shrinkage difference between the polymers, resulting in a physically coil- Which is a potential crimp source exhibiting stretchability.

In order to produce composite yarns by applying PTT / PET potting pots (1) to screening of core-sheath type polyester composite yarns, polyester (2) yarns containing an inorganic antibacterial agent It is necessary to increase the intensity of interlocking between the two.

Conventional methods can not increase the entanglement strength between the PTT / PET latent bulb 1 and the polyester 2 yarn containing the inorganic antibacterial agent. Therefore, in the present invention, the first stretching roller 7 The surface of the second elongating roller 9 is modified so as to overfeed, thereby causing air entanglement with a frequency of 40 to 80EA / M in the yarn state by performing heat treatment, a second heat treatment at the non-contact heat treatment heater 8, A high stretch polyester composite yarn can be produced.

At this time, by modifying the surface of the second elongating roller 9 so as to give a 1 to 2% overfeed for controlling the linear velocity between the second elongating roller 9 and the air nozzle 11, (EA: number, M: METER), and the interlocking frequency and interlocking strength of the core wire can be controlled by using PTT / PET potential housing with high crimp characteristics.

If a part of the surface of the second elongating roller 9 (1/2 of the width of the roller) is cut using a cutting tool, the diameter of the cutting portion 10 of the second elongating roller 9 is reduced, The effect of overfeed is generated, and the tensile force of the core yarn passing through the air nozzle 11 is reduced to increase the air entanglement strength. The cutting portion whose diameter is reduced by cutting the surface of the second elongating roller 9 is defined as the linear speed control roller 10.

In the heat treatment condition, the first heat treatment is performed by the first stretching roller 7 and is performed at a temperature of 110 to 120 ° C instead of 85 to 100 ° C which is a normal heat treatment temperature, and the second heat treatment is performed to the non- The non-contact heat treatment is carried out at a temperature of 180 to 200 DEG C and a 1.0 to 2.0% overfeed is given by the linear speed control roller 10 of the roller so as to make air entanglement uniform. The air nozzle 11 for air entraining is applied with a pressure within a range of 2.2 to 3.0 kg / m ² .

Here, if air entanglement is performed at less than 40 EA / M, there is a problem in process passability, and in the case of exceeding 80 EA / M, there is a problem that a line-shaped INTERLACE defect occurs in a fabric and a knitted fabric.

Therefore, as shown in FIG. 2, in the present invention, a high-stretch polyester composite yarn having high stretchability which can not be solved by a conventional method is subjected to a screening and sieving process and then subjected to primary heat treatment, non-contact secondary heat treatment, Followed by a twisting process and a winding process, and the fabric and the knitted fabric can be manufactured using the same.

Hereinafter, the polyester knitted fabric and the method for producing the fabric using the high stretch polyester conjugate yarn will be described.

The present invention is fabricated into yarns for fabric production through a twisting process in which twist is applied to the highly stretched polyester composite yarn within a range of 600 to 2,000 TPM. The fabrics fabricated by weaving or twisting the twisted yarn as warp or weft are dyed at a temperature of 100 to 130 ° C for 2 to 5 hours in a high-temperature and high-pressure rapid dyeing machine. can do.

Hereinafter, the present invention will be described in detail with reference to examples. The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. Ranges are not limited to these examples.

≪ Example 1 >

The thickness of the mono denier was 1.9 denier, the total denier was 45 denier, the intrinsic viscosity was 1.10, and the PET potentiometer having an intrinsic viscosity of 0.52. The thickness of the mono denier was 2.9 denier, the total denier was 100 denier , And 2 wt% of an inorganic antibacterial agent (calcium aluminum sulphate which adsorbed nickel) was used as a superpowder, and subjected to a primary heat treatment at a temperature of 120 캜, a non-contact secondary heat treatment at 180 캜, an overfeed of 1.5% And were entangled at an air pressure of 2.5 kg / m < ² > to produce a high stretch polyester composite yarn of the present invention having a yarn size of 150 denier. The strength of the polyester yarn containing the antimicrobial agent derived from the natural product used as the salting agent was 3.5 g / denier, the elongation was 35%, the uniformity (U%) was 1.0, and the boiling water shrinkage (Sr) was 5%.

The prepared yarn was weighed at 1,500 TPM and used as warp and weft yarns to weave in a water jet loom, and then subjected to salt processing according to ordinary processing conditions to produce a polyester fabric.

≪ Example 2 >

The same procedure as in Example 1 was repeated to prepare a high stretch polyester composite yarn, and the thus prepared yarn was twisted at 1,500 TPM to prepare a polyester knitted fabric.

≪ Example 3 >

The screen used in Example 3 was a mono denier of 3.1 denier and a total denier of 75 denier. In addition, the nodule showed a monodendear of 2.1, a total denier of 75 denier, a strength of 1.5 g / denier, elongation of 25%, uniformity (U%) of 1.0 and boiling water shrinkage (Sr) of 5%. Except for the above, a high stretch polyester composite yarn was produced in the same manner as in Example 1, and polyester fabric was produced using the same.

<Example 4>

Stretched polyester composite yarn was prepared in the same manner as in Example 3, and the thus prepared yarn was twisted at 1,500 TPM to prepare a polyester knitted fabric.

&Lt; Comparative Example 1 &

The test used in Comparative Example 1 was a PTT / PET lathe with a mono denier of 3.7 denier and a total denier of 150 denier, with a strength of 1.0 g / denier, an elongation of 15%, a uniformity of U %) Of 1.0 and boiling water shrinkage (Sr) of 5%, a first heat treatment temperature of 100 ° C, a second contact heat treatment method, and no overfeed , And a high stretch polyester conjugate yarn was produced in the same manner as in Example 1, and a polyester woven fabric was produced using the same.

&Lt; Comparative Example 2 &

Stretched polyester composite yarn was produced in the same manner as in Comparative Example 1, and the thus prepared yarn was twisted at 1,500 TPM to prepare a polyester knitted fabric.

Examples 1 to 4 and Comparative Example 1 and Comparative Example 2 were subjected to the physical properties test by the following methods and are shown in Table 1.

(1) Elongation Recovery Rate of High Elastic Polyester Composite Yarns

The elongation recovery rate of the high stretch polyester composite yarn was measured ten times by ASTM 6720 measurement method.

(2) The elasticity of the fabric, the elongation recovery rate

The stretchability of the fabric was measured ten times by the measurement method of KSK 0352 5.2.2, and the elongation recovery rate of the fabric was measured ten times by the method of KSK 0541.

(3) Antimicrobial activity (reduction rate of bacteria)

The bacterial reduction rate was measured by the KSK 0693 method.

(4) Tactile feeling (refreshing feeling and softness)

"○" when more than 8 people judged to have a cooling sensation and softness by 10 experts, "△" when 6 ~ 7 persons judged that they have a cooling sensibility and softness, And "X" in the case of judging that there is a case.

Experiment result division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Air exchange
Renal recovery rate (%) 36 36 33 33 24 21 Textile Elasticity (%) 34 37 38 40 17 19 Fabric stretching
Recovery rate (%) 95 93 92 91 71 73 Bacterial Reduction Rate (%) 99.9 touch
(Soft and soft) ○ ○ ○ ○ △ △

As shown in Table 1, the polyester fabrics produced in Examples 1 to 4 were excellent in all properties such as elongation recovery rate of the air entangled yarn, stretchability of the fabric, expansion / contraction recovery of the fabric / knitted fabric, On the other hand, it was confirmed that the polyester fabric prepared in Comparative Examples 1 and 2 had reduced tactile and softness effects.

In the present invention, the warp knitted fabric has a stretchability (%) of 30% or more and a stretch recovery ratio of 90% or more in order to exhibit excellent stretchability and wrinkle recovery characteristics. If the stretchability is less than 30%, the stretchability of the knitted fabric is deteriorated. If the stretch shrinkage recovery ratio is less than 90%, the elasticity of the knitted fabric is significantly decreased.

However, as shown in Table 1, it can be seen that the polyester knitted fabrics produced in Examples 1 to 4 have excellent stretchability and stretch recovery ratio of the polyester fabric and knitted fabric of Comparative Examples 1 and 2 compared to the knitted fabric. That is, the knitted fabric manufactured using the highly stretch polyester composite yarn of the present invention can produce a superior knitted fabric having a stretchability of 30% or more and a stretch recovery ratio of 90% or more without using elastic yarn such as spandex yarn . As a result, it is possible to provide a fashion garment material that is excellent in activity, suitable for ladies 'and gentlemen' s wear and various sports wear.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: core component
2: Second component
3: Yarn Guide
4: Yarn sensor
5: Yarn Cutter
6: Supply Nip roller
7: First elongating roller (GR1)
8: Non-contact heat treatment heater
9: Second elongating roller (GR2)
10: Line speed control roller
11: Air nozzle
12: High flexible composite yarn

Claims (8)

As a result of the examination, it was confirmed that the thickness of the PTT / PET pot with the single filament thickness of 0.7 to 3.5 denier and the total thickness of 30 to 100 denier, the filament monofilament thickness of 0.05 to 4.0 denier and the total thickness of 30 to 150 denier, An inorganic antibacterial agent which satisfies the following physical properties by adsorbing at least one antibacterial metal ion selected from cobalt (Co), zinc (Zn), chromium (Cr), silver (Ag) and copper (Cu) Preparation stage of polyester yarn;
a) Strength 1.5 to 3.5 g / denier
b) Shindo 25-35%
c) uniformity (U%) 05-1.0
d) Boiling water shrinkage (Sr) 10% or less
PTT / PET potential housing and primary heat treatment stage of antibacterial polyester;
A second non-contact heat treatment step of the first heat-treated fiber;
Air entraining of the non-contact secondary heat treated fiber;
Twisting of air entangled fibers; And
A step of winding the twisted fibers;
&Lt; RTI ID = 0.0 &gt; 1, &lt; / RTI &gt;
delete The method according to claim 1,
Wherein the weight ratio between the PTT / PET pot harvesting stock and the polyester yarn including the superabsorbent inorganic antibacterial agent is 20:80 to 50:50.
The method according to claim 1,
The treatment temperature in the first heat treatment step is 110 to 120 ° C, the treatment temperature in the non-contact second heat treatment step is 180 to 200 ° C, the over feed rate in the air entraining step is 1 to 2% 2.2 to 3.0 kg / m &lt; ² &gt;, and the twist of the twisting step is in the range of 600 to 2000 T / M or less.
The method according to claim 1,
And the frequency of said entanglement is 40 to 80 EA / M.
A high-stretch polyester composite yarn produced by the method of any one of claims 1 to 3-5.
A fabric fabric produced using the high stretch polyester composite yarn according to claim 6.
A circular knitted fabric produced by using the high stretch polyester composite yarn according to claim 6.

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