KR100614626B1 - Suede-like warp letter with excellent comfort and antibacterial properties - Google Patents

Abstract

The present invention relates to a suede warp knitted fabric excellent in comfort and antibacterial properties. The suede-like warp knitted fabric of the present invention is composed of polyester microfiber yarns having an inorganic antimicrobial surface and having a single yarn fineness of 0.001-0.05 denier, and a backside structure composed of a polyester non-woven single yarn having 1-3 denier single yarn fineness. The surface of the polyester ultra-fine yarn (piles) is characterized in that the hair (立 毛). The suede warp knitted fabric of the present invention is excellent in touch, appearance, comfort and antibacterial properties, and is used for acupuncture and medical use.

Warp knitted fabric, suede, antibacterial, comfort, microfiber, sweat-absorbent quick-drying, composite fiber

Description

A suede-like warp knit with excellent pleasantness and antibiosis}             

1 is a schematic view of the process of spinning the island-in-the-sea composite fiber used as a yarn for shaving the surface tissue in the present invention

2 to 5 are cross-sectional views of a polyester release section yarn constituting the back structure

※ Explanation of Codes on Major Parts of Drawings

1: Fiber Formable Component Feeder 2: Eluent Component Feeder

3: masterbatch chip feeder 4: side feeder

5,6 Extruder 7 Spinning Block

8: winder

The present invention relates to a suede warp knitted fabric excellent in touch and appearance as well as excellent in comfort and antibacterial properties.                         

More specifically, the present invention is very dense, soft, yet excellent drape (Drape) property, sweat absorbed well to dry quickly (hereinafter referred to as "absorbent quick-drying") and antimicrobial and also provided for bedding or women's clothing It relates to a suede warp knitted paper useful as a material.

Suede-like warp knits are warp knits whose fibers are thin on the surface and have the same effect as natural leather.

As the fiber becomes thinner, the bending stiffness decreases, so the fabric made of ultra-fine fibers has the advantage of having a very soft touch, and thus, research on the commercialization of the ultra-fine fibers is very active. In addition, the development of ultra-miniaturization technology of synthetic fiber has been the motive for greatly improving the commercialization of emotional materials for clothing.

In general, the ultra-fine fibers can be classified into three types: direct spinning, two-component split spinning, and two-component elution spinning. Fine microfibers manufactured by direct spinning have a fineness of 0.3-0.5 denier and two-component split. The fineness of the ultrafine fibers manufacturable by the type spinning method is 0.2 denier, whereas the fineness of the ultrafine fibers manufacturable by the two-component eluting spinning method can be manufactured to 0.01 denier or less.

When the ultra-fine fiber produced by the direct spinning method is applied to warp knitted fabrics, many filaments are dispersed, so the hardness and appearance are very poor, and the manufactured suede warp knitted fabric also has poor surface feel and writing effect.

On the other hand, when ultra-fine fibers made of two-component split type spinning method composed of nylon / polyester are applied to warp knitted fabrics, nylon and polyester are incompatible with nylon and polyester due to the tension and friction that are received during warp and weaving. The esters were separated from each other, resulting in poor stiffness and knitting ability, and the appearance of the manufactured products was poor due to the limitation of ultrafine fineness.

In addition, when applied to suede warp knitted fabric using a composite fiber having a level of 0.05 denier or less after dissolution prepared by the two-component elution spinning method, the elution component is eluted in the post-processing step for the ultra-miniaturization. As a result, the tissue density of the fabric becomes loose, resulting in a poor appearance of the fabric.

Commercialization using ultra-fine fibers is progressing in various ways in the textile sector, but in the case of warp knitting, as described above, due to various defects generated during canon and post-processing, the commercialization has not progressed.

In addition, when the suede-like warp knitted fabric is made of ultra-fine fibers according to the conventional method described above, the feel and appearance of the warp knitted fabric are deteriorated, and there is a problem in that the comfort and the antibacterial property cannot be imparted due to the lack of sweat absorption and dryness.

SUMMARY OF THE INVENTION An object of the present invention is to provide a suede warp knitted paper that is excellent in touch and appearance and also has improved comfort and antimicrobial properties to solve the above problems.

The present invention is to improve the feel of suede warp knitted paper by using an ultra-fine yarn containing inorganic antimicrobial material as a yarn constituting the surface texture and to provide antimicrobial properties. In addition, the present invention is to improve the appearance and comfort (absorbent quick drying) of the suede warp knitted fabric by using a polyester release cross-section yarn as a yarn constituting the back structure.

Suede warp knitted fabric excellent in comfort and antimicrobial properties of the present invention for achieving the above problems, the surface structure contains an inorganic antimicrobial material and consists of a polyester ultra-fine yarn having a single yarn fineness of 0.001-0.05 denier, the back surface is single yarn It is composed of a polyester release cross-section yarn having a fineness of 1-3 denier, the surface is characterized in that the pile (piles) of the polyester ultra-fine yarn.

Hereinafter, the present invention will be described in detail.

The present inventors pay attention to the fact that the selection and combination of materials to be applied in tissue design is very important in order to manufacture suede warp knitted paper which is very soft and excellent in appearance as well as excellent in comfort and antimicrobial like natural suede. It was completed.

First, the present invention uses a composite fiber composed of a fiber-forming component and an eluting component of the polyester containing an inorganic antimicrobial material and the single yarn fineness of 0.001-0.05 denier at the time of knitting, as a yarn of the surface tissue. When the composite fiber is removed from the elution component by the weight loss after knitting, only the fiber-forming component containing an inorganic antimicrobial agent is left, and their single yarn fineness is 0.001-0.05 denier.

If the single yarn fineness of the surface tissue yarn exceeds 0.05 denier, the soft touch is poor and not only the quality but also the lighting effect is not expressed.If the surface yarn is less than 0.001 denier, the touch is soft and the nipples are easily dropped by friction. Or entangled, resulting in poor appearance.

Specifically, if the single yarn fineness of the surface tissue yarn, that is, the single yarn fineness of the piled superfine yarn (pile) exceeds 0.05 denier, the hair density of the pile decreases, and the touch and lighting effects are not only lowered, but also the slant line in the warp knitted fabric, etc. Defects are easily exposed to the outside, which reduces the appearance of warp knitted paper.

If the length of the pile is formed too long to prevent the appearance of warp knitted paper, the tactile and lighting effects become worse. Therefore, it is preferable that the pile length piled on the surface of the suede warp knitted fabric of this invention is 0.1-0.3 mm.

It is preferable that the fiber-forming component of the composite fiber used as the yarn of the surface tissue is polyester, and the eluting component is co-polyester having excellent alkali hydrolyzability. The content of the eluting component in the composite fiber is usually 20-40% by weight.

In order to introduce the inorganic antimicrobial material into the polyester microfibers constituting the surface of the suede warp knitted paper, a method of introducing (adding) the inorganic antimicrobial material into the fiber forming component may be adopted.

More specifically, the masterbatch may be prepared from (i) a fiber forming component and an inorganic antimicrobial material and introduced into the fiber forming component extruder 5 using the side feeder 4, (ii) a fiber The forming component and the inorganic antimicrobial substance may be directly added to the fiber forming component extruder 5 and then melted and mixed.

The island-in-the-sea composite fiber of the present invention can be prepared by complex spinning the fiber-forming component and alkali-soluble eluting component into which the inorganic antimicrobial substance is introduced as described above in the conventional composite spinning method as shown in FIG. 4.

The content of the inorganic antimicrobial substance contained in the fiber-forming component is not particularly limited, but in order to prevent damage to the island component due to friction with the outside when the island component is exposed to the outside, the content of the inorganic antibacterial substance is 30 parts by weight or less relative to 100 parts by weight of the island component. It is preferable that it is 0.5-5 parts by weight with respect to 100 parts by weight of the coating component in consideration of spinning operation, post-processing ease and the appearance of the final product.

Powdered silver or silver ion carrier may be used as the inorganic antimicrobial material, and the average diameter of the inorganic antimicrobial material is preferably 0.1-5.0 μm in consideration of dispersing performance. The average diameter of the inorganic antimicrobial substance is calculated as the average diameter of 10 inorganic antimicrobial substance particles when the inorganic antimicrobial substance is magnified 3,000-10,000 times by scanning electron microscope.

On the other hand, in the present invention, in order to give the suede warp knitted fabric with sweat-absorbing quick-drying, to provide comfort and improve shape stability, the back structure is composed of a polyester-shaped cross-section yarn of filament having a single yarn fineness of 1-3 deniers.

The polyester release cross-section yarn has various cross-sectional shapes as illustrated in FIGS. 2 to 5. In the present invention, the cross-sectional shape of the polyester release cross-sectional yarn is not particularly limited, and includes all forms of ellipses, triangles, and the like having a larger surface area than circular ones.

If the single yarn fineness of the polyester release cross-section yarn is less than 1 denier, the morphological stability of the warp knitted fabric may be lowered, and if it exceeds 3 denier, the touch of the warp knitted fabric may deteriorate. In addition, the total fineness of the polyester release section yarn is preferably 30-80 denier.

The content of the surface tissue yarn is preferably 40-87% by weight relative to the total weight of the processed warp knitted paper. If the content is less than 40% by weight, there is a risk that the warp knitted fabric may be poor. If the content is more than 87% by weight, the content of intermediate yarns and backing yarns may be relatively low, leading to deterioration of drape and mechanical properties.

On the other hand, the content of the back surface yarn is preferably 13 to 60% by weight relative to the total weight of the processed warp knitted paper. If it exceeds the above range, the touch of the warp knitted fabric may be lowered, and if it is less than the above range, the shape stability and drape may be lowered.

The suede-like warp knitting machine of the present invention contains an inorganic antimicrobial material in a 2-bar warp knitting machine, and has a single fiber fineness of 0.001-0.05 denier, a composite fiber composed of a fiber-forming component and an eluting component as a surface tissue yarn, and a single yarn fineness of 1- After knitting the warp knit dough with 3 denier polyester cross section yarns as the back side tissue yarn, first raising to shrink the warp knit fabric by 35% or more in the width direction, and then shearing and heat setting, and then Heat-fixed warp knitted paper was treated with an alkaline aqueous solution to elute the eluted components in the composite fiber, then dyed and dried to reduce by more than 40% in the width direction. By brushing, the surface pile can be neatly prepared.

When producing the suede-like warp knitted fabric of the present invention, it is more preferable to first brush in the warp knitted paper state as described above, and then to second brush again in the warp knitted paper state which has been reduced and dyed. It is preferable that the first brushing is performed at least four times, the heat setting after the second brushing is performed at 120 ° C. or higher, and the shearing is performed about once.

The weight loss step of eluting the component eluted in the composite fiber with an aqueous alkali solution is preferably performed for 30 minutes to 60 minutes in a 1% NaOH aqueous solution at 98 ° C., and dyeing is preferably performed at 130 ° C. for 10 to 60 minutes.

However, the present invention does not specifically limit the conditions of raising, heat setting, shearing, weight loss, dyeing, and the like.

Suede-like warp knitted fabric of the present invention is excellent in the light penetrating effect, because the surface tissue yarn is a two-component eluting yarn, and has excellent process passability such as diameter and shaving, and eluting component is eluted during post-processing to make the surface tissue yarn ultra fine. And soft touch can be expressed.

In addition, the suede-like warp knitted fabric of the present invention contains an inorganic antimicrobial material on the surface, and is composed of ultra-fine fibers having a single yarn fineness of 0.001-0.05 denier, thus exhibiting an antibacterial effect and having excellent touch and appearance. .                     

The suede rough warp knitted fabric of the present invention is composed of a polyester release cross-section yarn having a single yarn fineness of 1 to 3 denier, and has excellent comfort (absorption quick drying) and excellent shape stability.

In the present invention, the property evaluation method of the suede warp knitted paper is performed as follows.

Softness

According to the sensory test by 10 experts, 8 or more are judged to be soft, and 5-7 are judged to be soft, and 8 or more are judged to be soft.

Drape property

According to the sensory test by 10 experts, 8 or more people judge that there is drape, and 5-7 people judge that there is drape. Separated by.

Comfort

According to the sensory test by 10 experts, 8 or more people judge that they are comfortable, and 5-7 people judge that they are comfortable. Separate by.

·Exterior

According to the sensory test by 10 experts, when 8 or more people judge that the appearance is good, 5-7 people judge that the appearance is good, and when 8 or more judge the appearance is poor, it is classified as bad. .

Bacteriostatic reduction rate

50g of the fiber-forming component is taken from the composite fiber and its bacteriostatic reduction rate is measured by the antimicrobial measurement method of Korean Industrial Standard KS K 0693-2001. Specifically, the reduction rate was determined using the initial number of bacteria and the number of bacteria after 18 hours of cultivation using Staphylococcus aureus and Pneumococcal (Klebsiella pneumoniae). The initial bacterial count is 1.4 × 10 ⁵ / ml for Staphylococcus aureus and 1.3 × 10 ⁵ / ml for pneumococci. The measurement was carried out by Korea Yarn Textile Testing Institute.

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

Example 1

Polyethylene terephthalate to which 5 parts by weight of silver in powder form (based on 100 parts by weight of the fiber-forming component) is used as a fiber-forming component, and 7 mol% of sodium dimethylene sulfoisophthalate is copolymerized to give excellent polyester hydrolysis. Elution component, but the eluted composite fiber having a fineness of 0.01 denier and a total fineness of 75 denier after elution component is used as the yarn for the surface tissue, and the single yarn fineness is 2 denier and the total fineness is 50 denier A two-bar warp knitting machine is prepared as a warp knitted fabric having a density of 23 C / CM, using a polyester cross-section yarn having a cross section as shown in FIG. In this case, the use ratio of yarn for backside tissue is 26% by weight based on the total weight of the processed letter. The flat knitting material thus prepared was brushed five times to shrink 50%, followed by shearing → heat fixation → weight loss (NaOH concentration of 1% OWS, 98 ° C. × 30 min) → dyeing [dispersant] → drying → Second raising, brushing, suede warp knitted paper having a pile length of 0.2 mm, which was embedded on the surface, was prepared, and the physical properties thereof were shown in Table 1 below.

Example 2

Powdered silver 5 parts by weight (based on 100 parts by weight of the fiber-forming component) Polyethylene terephthalate as a fiber-forming component and 7 mol% of sodium dimethylene sulfoisophthalate is copolymerized to elute the polyester copolymer polymer having excellent alkali hydrolyzability. 3, wherein the microfibers having a fineness of 0.04 denier and a total fineness of 75 denier are used as the yarn for the surface tissue, and the single yarn fineness is 1 denier and the total fineness is 40 denier. A polyester double-sided cross section yarn having a cross section as described above is used as a yarn of a backside structure to prepare a warp knit having a density of 23 C / CM with a 2-bar warp knitting machine. In this case, the use ratio of yarn for backside tissue is 31% by weight based on the total weight of the processed letter. The flat knitting material thus prepared was brushed five times to shrink 50%, followed by shearing → heat fixation → weight loss (NaOH concentration of 1% OWS, 98 ° C. × 30 min) → dyeing [dispersant] → drying → Second raising, brushing, suede warp knitted paper having a pile length of 0.2 mm, which was embedded on the surface, was prepared, and the physical properties thereof were shown in Table 1 below.

Example 3

Polyethylene terephthalate with 5 parts by weight of powdered silver ion carrier (based on 100 parts by weight of the fiber-forming component) is used as the fiber-forming component, and the polyester copolymer polymer having excellent alkali hydrolyzability is used as the eluting component. Elution type composite fiber having 0.008 denier and 75 denier total fiber as the yarn for the surface structure, and having a single yarn fineness of 2.5 denier and 50 denier with a cross section as shown in FIG. A two-bar warp knitting machine is used to produce a warp knitted fabric having a density of 23 bones / cm using a cross section yarn as a yarn of a back surface tissue. At this time, the weight ratio of the surface tissue yarn: back tissue yarn in the warp knitted fabric is 45% by weight: 55% by weight. The flat knitting material thus prepared was brushed five times to shrink 50%, followed by shearing → heat fixation → weight loss (NaOH concentration of 1% OWS, 98 ° C. × 30 min) → dyeing [dispersant] → drying → Second raising, brushing, suede warp knitted paper having a pile length of 0.2 mm, which was embedded on the surface, was prepared, and the physical properties thereof were shown in Table 1 below.

Example 4

Polyethylene terephthalate to which 5 parts by weight of the powdery silver ion carrier (based on 100 parts by weight of the fiber-forming component) is used as a fiber-forming component, and 7 mol% of dimethylene sulfoisophthalate is copolymerized to give excellent alkali hydrolyzability. Elution-component composites having a co-polymer of elution component, which has a fineness of 0.05 denier and a total fineness of 75 denier, are formed as yarns of surface texture, and have a single yarn fineness of 3 denier and a total fineness of 60. A denier cross section yarn having a cross section as shown in FIG. In this case, the use ratio of yarn for backside tissue is 26% by weight based on the total weight of the processed letter. The flat knitting material thus prepared was brushed five times to shrink 50%, and then shearing → heat fixation → weight loss (NaOH concentration 1% OWS, 98 ° C. × 30 minutes) → dyeing [dispersion material] → Drying → secondary raising → brushing, suede warp knitted paper having a pile length of 0.2 mm, which was embedded on the surface, was prepared, and the physical properties thereof were shown in Table 1 below.

Comparative Example 1

Polyethylene terephthalate as a fiber-forming component and 7 mol% of sodium dimethylene sulfoisophthalate is copolymerized to make a polyester copolymer polymer having excellent alkali hydrolyzability as an eluting component. Elution type composite fiber with total densities of 75 deniers is used as the yarn for the surface texture, and polyester filament of circular cross section with the single yarn fineness of 0.5 denier and the total fineness of 20 deniers is used as the yarn for the backside tissue. It is made of warp knit having a density of 23 C / CM. In this case, the use ratio of yarn for backside tissue is 48% by weight based on the total weight of the processed letter. The flat knitting material thus prepared was brushed five times to shrink 50%, followed by shearing → heat fixation → weight loss (NaOH concentration of 1% OWS, 98 ° C. × 30 min) → dyeing [dispersant] → drying → second brushing → brushed to prepare a processed warp knitted paper with a pile length of 0.4mm, and the physical properties thereof are shown in Table 1.

Comparative Example 2

Polyethylene terephthalate as a fiber-forming component and 7 mol% of sodium dimethylene sulfoisophthalate is copolymerized to make a polyester copolymer polymer having excellent alkali hydrolyzability as an eluting component. 2-bar warp yarns using eluted composite fiber with a total fineness of 75 denier as the yarn for the surface tissue, and a polyester filament with a circular cross section of 5 denier with a total fineness of 90 denier as the yarn for the backside tissue Prepared by warp knitted paper with a density of 23 C / CM. In this case, the use ratio of yarn for backside tissue is 42% by weight based on the total weight of the processed letter. The flat knitting material thus prepared was brushed five times to shrink 50%, and then a preliminary set (190 ° C.) → shearing → reduction (NaOH concentration 1% OWS, 98 ° C. × 30 minutes) → dyeing [dispersion] Dye] → drying → secondary raising → brushing to prepare a processed warp knitted paper having a pile length of 0.4 mm, and the physical properties thereof are shown in Table 1 below.

Property evaluation result of warp letter division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Softness Great Great Great Great usually Bad Drape Castle Great Great Great Great Bad Great Comfort Great Great Great Great Bad Bad Exterior Great Great Great Great usually usually Fibrous component (microbial reduction rate of ultra fine yarn 50g) Staphylococcus 99.8 99.8 99.8 99.9 16.2 16.4 Pneumococcal 99.9 99.8 99.8 99.9 23.5 22.6

The present invention is not only excellent in touch and appearance, but also excellent in comfort and antibacterial properties. Therefore, the suede warp knitted fabric of the present invention is useful as a material for acupuncture and clothing.

Claims (4)

The surface tissue contains inorganic antimicrobial material and consists of polyester microfiber yarn having a single yarn fineness of 0.001-0.05 denier, and the back surface consists of polyester heterofiber cross-section yarn having a single yarn fineness of 1-3 denier, and the surface of the polyester microfiber yarn Suede warp knitted fabric with excellent comfort and antimicrobial properties, characterized by pile of hair. The suede warp knitted fabric with excellent comfort and antibacterial property according to claim 1, wherein the total fineness of the polyester release cross section yarn is 30 to 80 denier. The suede warp knitted fabric of claim 1, wherein the inorganic antimicrobial material is silver or a silver ion carrier. The suede warp knitted fabric with excellent comfort and antibacterial property according to claim 1, wherein the length of the piled hair on the surface is 0.1-0.3 mm.

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