KR101664275B1 - High density fabric with excellent permeability and water-proof simultaneously - Google Patents

Abstract

According to the present invention, a high-density fabric is characterized by: (i) warp and weft are separately untwisted polyethyleneterephthalate superfine multifilaments which have a total fineness of 30-120 denier and a single yarn fineness of 0.6 denier or smaller; (ii) a warp cover factor (WCF) is 1,500-1,800; (iii) a weft cover factor (FCF) is 55-70% with respect to the WCF; (iv) the width of one strand of warp is 110-135% with respect to a warp pitch which represents an interval between adjacent warp strands; (v) an interval between threads constituting the high-density fabric is 10 m or smaller; (vi) the waterproof pressure of the high-density fabric is 1,100-2,000 mmH_2O; and (vii) the air permeability of the high-density fabric is 0.1-10 cc/cm^2sec or lower. The high-density fabric in the present invention has excellent waterproof properties and air permeability, does not include a waterproof resin coating layer, and thus has excellent texture and stretchability. Accordingly, especially, the high-density fabric is useful as an outdoor clothing material.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-density fabric having excellent breathability and water-

The present invention relates to a high-density fabric excellent in both breathability and water repellency, and more specifically, it is excellent in breathability, tactility and stretchability because it is not provided with a waterproof resin coating layer, and has an appropriate warp and weft cover factor range, The present invention relates to a high-density fabric useful as an outdoor garment material because it has an appropriate ratio between a width of one strand and an inclination pitch and an appropriate gap between clearances.

In the case of fabrics for outdoor clothing, both of excellent waterproof property and air permeability should be provided at the same time, preferably good tactile feel and stretch property.

As a conventional outdoor garment fabric, a two-layered moisture-permeable and waterproof coating fabric having a polyurethane resin coating layer formed with fine pores on a base material fabric has been mainly used to impart waterproofness and air permeability. The fabric is formed with a polyurethane resin coating layer on the fabric, so that the feeling and stretchability are largely lowered and the air permeability is insufficient.

As another conventional technique, Japanese Unexamined Patent Publication (Kokai) No. 2003-138449 discloses a method of weaving a high density fabric having a covering factor (CF) of 2,400 or more by using synthetic fiber fine filament multifilament (monofilament fineness of 0.7 dtex or less) as warp and / However, the conventional high-density fabric can improve waterproofness and feel, but has a problem that air permeability is greatly deteriorated due to high density.

The object of the present invention is to provide a high density fabric which is excellent in waterproof property and air permeability, and which is not provided with a waterproof resin coating layer and is good in touch and stretchability and is suitable as a material for outdoor clothing.

In order to achieve the above object, in the present invention, when a high-density fabric is woven using an unleaded polyethylene terephthalate ultrafine multifilament yarn having a total fineness of 30 to 120 denier and a single yarn fineness of 0.6 denier or less with warp and / or weft (Iii) adjusting the cover factor (WCF) of the warp to 1,500 to 1,900, (ii) adjusting the cover factor (FCF) of the warp to 55 to 70% of the warp cover factor (WCF) (Iv) the gap between the threads constituting the fabric is adjusted to 10 탆 or less so that the water pressure is 1,100 to 2,000 mmH ₂ O and the air permeability is 0.1 to 10 cc / Cm < 2 > sec.

The present invention is excellent both in water resistance and breathability, and it is excellent in touch and stretchability because there is no resin coating layer for waterproofing. Therefore, the present invention is particularly useful as an outdoor material.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a photograph of the surface of a high density fabric made in Example 1 of the present invention.

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

The high-density fabric according to the present invention is (i) at least one selected from warp yarns and weft yarns is a lead-free polyethylene terephthalate ultrafine multifilament yarn having a total fineness of 30 to 120 denier and a single yarn fineness of 0.6 denier or less, (ii) (WCF) is 1,500 to 1,900, (iii) the cover factor (FCF) of the warp yarn is 55 to 70% of the warp cover factor WCF, (iv) (Vi) the water pressure is 1,100 to 2,000 mmH ₂ 0, (v) the air permeability is in the range of 110 to 135% of the inclination pitch indicating the interval between the threads Is 0.1 to 10 cc / cm 2 sec ec or less.

Specifically, the warp and weft angles constituting the present invention are unfired polyethylene terephthalate multifilament having a total fineness of 30 to 120 denier and a single yarn fineness of 0.6 denier or less, preferably 0.4 denier or less.

When the total fineness of the warp and weft yarns is less than 30 deniers, the tear strength of the fabrics is greatly lowered, and the level at which no problem is practically caused can not be maintained. If the total fineness exceeds 120 deniers, the compactness of the fabric is lowered, It becomes difficult to obtain a fabric.

If warps and wefts are twisted, the clearance between yarns is not reduced and water resistance (water pressure) is lowered.

If the monofilament fineness of the warp and weft yarns exceeds 0.6 denier, the compactness of the fabric is lowered, and the water pressure deteriorating in the waterproof property is lowered, so that the feeling of touch is lowered.

The polyethylene terephthalate multifilament is composed of monofilaments having a repeating unit of polyethylene terephthalate of 95% or more.

The warp yarns and the warp yarns may be rolled yarns having a warp yarn or a flat yarn having a flat shape. When the warp and weft yarn are rolled, the stretch and touch of the fabric are further improved. The winding yarn may be a DTY yarn (draw textured yarn) or a side-by-side type two-component conjugated fiber.

The tissue form of the high-density fabric according to the present invention is knitted, twilled, patterned, modified, or a combination thereof, and the tissue form of the fabric is not particularly limited in the present invention.

The high density fabric of the present invention has a warp cover factor (WCF) of 1,500 to 1,900 and a weft cover factor (FCF) of 55 to 70% of the warp cover factor (WCF).

If the cover factor (WCF) of the warp is less than 1,500, the density of the fabric decreases and the water pressure decreases. If the warp exceeds the 1,900, the weft density is lowered which fixes the inclination relatively to decrease the water pressure and decrease the tear strength.

When the weft cover factor (FCF) is less than 55% or more than 70% of the warp cover factor (WCF), even if the warp cover factor (WCF) satisfies the range of 1,500 to 1,900, the water pressure and tear strength of the fabric do.

The inclination cover factor WCF and the weft cover factor FCF are determined by the following equations.

Where WN is the slope number per inch, WD is the slope total fineness immediately before, FN is the upper copy number per inch, and FD is the weft total fineness immediately before.

The high-density fabric of the present invention is 110 to 135% of the warped pitch indicating the interval between warp yarns adjacent to each other in width of the warp yarns.

When the width of one slope is less than 110% of the slope pitch, the water pressure is lowered due to insufficient overlap between the slopes, and when the width exceeds 135%, the slope density is excessively larger than necessary and the fabric becomes thicker, It is difficult to fix the slant so that the water pressure of the fabric is lowered and the tear strength is lowered to a practical level.

The high-density fabric of the present invention has a clearance of 10 占 퐉, preferably 5 占 퐉 or less, between the constituent seals.

If the clearance between the chambers exceeds 10 탆, water molecules pass through the fabric by pressure and a desired water pressure can not be obtained.

The high-density fabric of the present invention satisfying all of the above conditions has a water pressure of 1,100 to 2,000 mmH ₂ O and an air permeability of 0.1 to 10 cc / cm 2 sec sec or less.

The high-density fabric of the present invention may be water-repellent after being woven so as to satisfy the above-mentioned conditions at the same time, or may be subjected to a water-repellent treatment including digital printing together with water-repellent processing.

As an embodiment of the method for producing a high-density fabric of the present invention, when weaving a high-density fabric using a polyethylene terephthalate ultrafine multifilament in a lead-free state having a total fineness of 30 to 120 denier and a single fiber fineness of 0.6 denier or less with warp and weft (I) adjusting the cover factor (WCF) of the warp to 1,500 to 1,900, (ii) adjusting the cover factor (FCF) of the warp to 55 to 70% of the warp cover factor (WCF) (Iii) the width of one slope is adjusted to 110 to 135% of the inclined pitch, (iv) the gap between the threads constituting the fabric is adjusted to 10 μm or less, and the water pressure is 1,100 to 2,000 mmH ₂ O And an air permeability of 0.1 to 10 cc / cm < 2 > sec.

Hereinafter, the present invention will be described in detail with reference to examples and comparative examples.

However, the scope of protection of the present invention is not limited to the following examples.

Example  One

Inch polyethylene terephthalate ultrafine multifilament yarns composed of 204 monofilament yarns having a single yarn fineness of 0.32 denier and having a total fineness of 65 deniers were used as warp and weft yarns to provide warp yarns of 187 yarns / inch and weft yarns of 121 yarns / inch And the fabric was water-repellent and processed.

The results of evaluating various physical properties of the fabric were as shown in Table 1.

Example  2

A lead-free textured polyethylene terephthalate ultrafine multifilament filament made of 204 monofilament yarns having a single yarn fineness of 0.32 denier and having a total fineness of 65 denier was subjected to drawing-texturing, A lead-free textured polyethylene terephthalate ultrafine multifilament yarn composed of 144 monofilament yarns having a single yarn fineness of 0.35 denier and having a total fineness of 50 deniers was subjected to draw- , Woven fabrics with an oblique density of 186 / inch and weft density of 130, and then subjected to water-repellent processing.

The results of evaluating various physical properties of the fabrics were as shown in Table 1.

Example  3

A polyethylene terephthalate ultrafine multifilament having a total fineness of 50 denier, which is composed of 144 monofilament yarns having a single yarn fineness of 0.35 denier, is made up of 204 monofilament yarns having a single yarn fineness of 0.32 denier and has a total fineness of 65 Denier Lead-free Polyethylene Terephthalate Ultrafine multifilaments were drawn-textured and crimped using a weft yarn, weaved at a warp density of 205 / inch and weft density of 129 / inch And then subjected to water-repellent processing.

The results of evaluating various physical properties of the fabrics were as shown in Table 1.

Comparative Example  One

A polyethylene terephthalate ultrafine multifilament having a total fineness of 65 denier composed of 204 monofilament yarns having a monofilament fineness of 0.32 denier and having a monofilament fineness of 2.92 denier and having a total fineness of 70 Using a denier lead-free polyethylene terephthalate multifilament as a weave, the fabric was woven with a warp density of 196 / inch and a weft density of 110 / inch, followed by water repellent processing.

The results of evaluating various physical properties of the fabric were as shown in Table 1.

Comparative Example  2

Using polyethylene terephthalate ultra-fine multifilaments of 192 denier monofilament yarns of 192 monofilament yarns with a total fineness of 65 denier as warp and weft yarns, weaving yarns of 140 yarns / inch and weft density of 118 / inch The fabric was woven and subjected to water-repellent processing.

The results of evaluating various physical properties of the fabric were as shown in Table 1.

Comparative Example  3

A monofilament yarn having a monofilament fineness of 0.52 denier and having a total fineness of 75 denier and a number of twists per meter of 800 and a monofilament yarn having a monofilament fineness of 0.29 denier, The fabric was woven with a 60 denier polyethylene terephthalate ultrafine and multifilament weft yarn at a warp density of 186 yarns / inch and a weft density of 115 yarns / inch, followed by water repellent processing.

The results of evaluating various physical properties of the fabric were as shown in Table 1.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Oblique
Cover fact 1,650 1,630 1,758 1,709 1,217 1,564 Weft
Cover fact 1,130 1,130 1,113 967 1,032 766 Weft Cover Fact / Slope Cover Fact (%) 68 69 63 57 85 49 1 slope
Width (탆) 151 158 139 150 155 142 Inclined pitch (占 퐉) 124 126 117 120 168 131 Slope 1 strand width / slope pitch (%) 122 126 119 125 92 108 Clear gap between chambers (㎛) 8 4 0 0 21 15 Water pressure (mmH2O) 1,200 1,510 1,550 820 730 720 Ventilation
(cc / cm < 2 > sec) 0.65 0.54 0.51 0.71 0.82 0.75

The fabric prepared in Examples 1 to 3 in Examples 1 to 3 exhibited excellent water pressure and air permeability at the same time, but the fabric prepared in Comparative Example 1 had a large single yarn fineness of the weft yarn, The manufactured fabric had a large gap between the yarns, resulting in a large decrease in water pressure due to a lack of a cover factor of warpage, and the fabric prepared in Comparative Example 3 was twisted in a warp so that the clearance between the yarns was too wide, .

In Table 1, the water pressure was evaluated by the KS K ISO 811-2009 method and the air permeability was evaluated by the JIS L 1099 (potassium acetate method) method.

Claims (7)

(I) at least one selected from among warp yarns and weft yarns is a lead-free polyethylene terephthalate ultrafine multifilament yarn having a total fineness of 30 to 120 denier and a single yarn fineness of 0.6 denier or less, (ii) a warp cover factor (WCF) (Iii) the cover factor (FCF) of the warp yarn is 55 to 70% of the warp cover factor (WCF), (iv) the width of the oblique yarn has a warp pitch (Vi) the water pressure is 1,100 to 2,000 mmH ₂ 0, (v) the air permeability is 0.1 to 10 cc / cm 2, and sec. < / RTI > The high-density fabric according to claim 1, wherein the high-density fabric is subjected to water-repellent processing. The high-density fabric according to claim 1, wherein the high-density fabric is subjected to a water-repellent treatment including water-repellent processing and digital printing. The dense fabric according to claim 1, wherein the single yarn fineness of warp and weft yarns is 0.4 denier or less. The high-density fabric according to claim 1, wherein the clearance between the threads constituting the fabric is 5 占 퐉 or less. The dense fabric according to claim 1, wherein the warp yarns are one kind of yarn selected from a yarn having a crimp property and a flat yarn having a flat cross section. The high-density fabric according to claim 1, wherein the yarn is one yarn selected from a yarn having a crimp property and a flat yarn having a flat cross-section.

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