KR20170081676A - Thin lightweight woven fabric - Google Patents

Abstract

The present invention provides a puttable lightweight fabric which can be suitably used for a side surface such as a down wear, a down jacket, a futon, a sleeping bag and the like, and can maintain low air permeability even when a bias is deformed.
The present invention relates to a fabric composed of synthetic fiber multifilaments, wherein the degree of overlap between adjacent warp yarns constituting the fabric and the adjacent monofilaments in the weft yarn is 0.6 or more, and the unit weight is 15 to 50 g / m < ² >, and a sports medical, quilt, and inner back fabric using the same.

Description

{THIN LIGHTWEIGHT WOVEN FABRIC}

The present invention relates to a thin, lightweight fabric. More particularly, the present invention relates to a thin, lightweight fabric for sports medical care (such as clothes) which is lightweight and has a small thickness and maintains low air permeability even when deformed by a bias.

Patent Document 1 below discloses a lip stop cloth which is water-repellent and calendered as a wing cloth and is low in unit weight and hardly deformed in the bias direction and has almost no air permeability. However, since deformation in the bias direction is reduced by coating with a synthetic resin such as a polyurethane or acrylic ester system, the fabric becomes thick, heavy, and loses its feel, making it difficult to apply it to medical fabrics.

In the following Patent Document 2, multifilaments composed of synthetic fibers of 28 dtex or less and monofilaments arranged in two layers are provided, thereby reducing the air permeability of the fabric and suppressing the deterioration of air permeability due to washing or the like . However, in order to reduce the air permeability, there is a problem that the number of single yarns and single yarn fineness is limited.

Further, in the following Patent Document 3, and a total size of 30 dtex or less inclined, water pressure resistance is 800 mmH there is domestic retention after ₂₀ or more, washing discloses a waterproof polyester fabric which is at least 50%. However, the air permeability was not defined, and in particular, the air permeability at the time of the bias deformation was not satisfied.

Patent Document 1: JP-A-05-245983 Patent Document 2: Japanese Laid-Open Patent Publication No. 2012-57265 Patent Document 3: Japanese Patent Publication No. 4399717

SUMMARY OF THE INVENTION In view of the problems of the prior art, a problem to be solved by the present invention is to provide an air bag which can be suitably used for a side surface such as a down wear, a down jacket, a futon, a sleeping bag, To provide a sustainable, lightweight fabric.

In order to solve these problems, the inventors of the present invention have conducted intensive investigations and conducted experiments. As a result, it has been found that even if the film is not coated with a synthetic resin, the degree of redundancy of adjacent single filaments , It is possible to reduce deformation in the bias direction even in the case of a thin and lightweight fabric, and the present invention has been completed on the basis of such findings.

That is, the present invention is as follows.

[1] A fabric composed of a synthetic fiber multifilament, wherein the degree of overlap between adjacent warp yarns constituting the fabric and the adjacent monofilament in the weft yarn is 0.6 or more, and the unit weight is 15 to 50 g / m < ² >.

[2] The release-coated lightweight fabric as described in [1], which is not coated with a synthetic resin.

[3] The release-type lightweight fabric as described in [1] or [2], wherein the air permeability after the bias deformation is 1.5 cc / cm ² sec or less.

[4] The release-type lightweight fabric as described in any one of [1] to [3], wherein the synthetic fiber multifilament has a fineness of 5 to 40 dtex and a single fiber fineness of 0.8 to 2.0 dtex.

[5] The fabric of claim 1, wherein the fabric has a taffeta or ripstop taffeta structure, the tear strength is 7 N or more, the cover factor is 1,300 to 2,000, and the air permeability is 1.5 cc / cm ² · sec By weight or less based on the total weight of the fabric.

[6] The release-resistant lightweight fabric as described in any one of [1] to [5], wherein the silicone resin processing is carried out.

[7] The release-coated lightweight fabric as described in any one of [1] to [6], wherein the synthetic fiber multifilament is a polyester fiber or a polyamide fiber.

[8] A sports medical care using the leafy lightweight fabric according to any one of [1] to [7] above.

[9] A futon mat according to any one of [1] to [7].

[10] A fabric for an inner bag using the peel-away lightweight fabric according to any one of [1] to [7].

The cloth-and-paper lightweight fabric according to the present invention has a weight per unit weight of 15 to 50 g / m < ² > and is thin and lightweight, and the degree of overlap between adjacent monofilaments constituting the weft and the cross- (Filaments) overlap each other within a predetermined range, the air permeability at the time of the bias deformation is small, and the fabric is also excellent in down-proof property. Therefore, inner bag fabrics and the like.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view for explaining a method of measuring the air permeability after bias deformation; Fig.
Fig. 2 is an explanatory view of an example of a cross-section photograph of a fabric showing the overlapping state of adjacent monofilaments on a cross section and a criterion of the judgment.

Hereinafter, embodiments of the present invention will be described in detail.

The ground-loop lightweight fabric of this embodiment is composed of synthetic fiber multifilament. The material of the synthetic fibers is not particularly limited and may be polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalate, or copolymers thereof, or nylon 6,66, 610, 612, Polyamide fibers, polyolefin fibers such as polyethylene and polypropylene, and the like are suitably used.

The cross-sectional shape of the monofilament section of the synthetic fiber multifilament is not particularly limited and may be a modified cross section other than a round cross section. The shape of the deformed cross section may be triangular, Y-shaped, cross-shaped, W-shaped, V-shaped and the like, but a round cross section is suitably used in terms of strength.

The fineness of the synthetic fiber multifilament is preferably 5 to 40 dtex, more preferably 10 to 33 dtex, and still more preferably 10 to 25 dtex. If it exceeds 40 dtex, the yarn is thick, when it is made of fabric, it is thick, and it becomes hard and it does not become a lightweight cloth. If it is smaller than 5 dtex, the warpage becomes difficult, and even if the cover factor is increased, the adjacent single filaments do not overlap and the air permeability in the bias deformation increases.

The yarn filament fineness is preferably 0.8 to 2.0 dtex, and more preferably 0.8 to 1.5 dtex. When the filament yarn fineness is less than 0.8 dtex, the yarn becomes multifilament, so that the degree of overlap of adjacent monofilaments on the cross section of the warp and weft yarns increases, but there is a fear of deterioration of the tear strength. When the filament yarn fineness of the filament yarn is larger than 2.0 dtex, there is a possibility that the degree of overlap of the adjacent monofilaments on the cross section of the warp yarn and / or the weft yarn becomes smaller because the yarn filaments become smaller.

The weave of the ground-loop lightweight fabric of the present embodiment is not particularly limited, but arbitrary structures such as tappers, ripstop tappers, crucibles, and runners can be used. Among them, the tapputa and ripstop tapputa are suitably used because they have many intersections of warp and weft yarns and are less prone to decrease in warp yarns and weft yarn adjacent yarns after bias deformation.

The unit weight of the ground-loop lightweight fabric of this embodiment is 15 to 50 g / m ² , preferably 20 to 40 g / m ² . In order to feel a lightweight feeling when the fabric is used as a sports medical or duvet side face, particularly a down jacket or a duvet, the unit weight may be 50 g / m ² or less. If it is 15 g / m ² or more, the tear strength can be made 8 N or more by adjusting the fabric texture and performing resin processing.

The thin, lightweight fabric of this embodiment is preferably a thin, lightweight, and high tear strength. The tear strength is measured by the JIS-L-1096: 8.15.5 D method (pendulum method), and it is preferable that the tear strength is about 7 N to 20 N in order for the fabric to withstand practical use such as sports medical care, Do. If it is 7 N or more, there is no risk of tearing during use, and if it is 20 N or less, practical use of the thin fabric using the thin yarn becomes possible.

In the peel-away lightweight fabric of the present embodiment, the sum of the cover factor of warp and the cover factor of weft (cover factor expressed by the following formula) is preferably 1300 to 2200,

(Dtex) < tb > Weft density (number / 2.54 cm)

Here, the unit of warp density and weft density is (dog / 2.54 cm).

If the cover factor is less than 1300, it is lightweight, but the degree of air permeability after deformation of the bias becomes large because of a small amount of warpage and / or overlap of weft yarns. If the cover factor is more than 2200, the density becomes high and the change in air permeability after the bias deformation is small, It is not desirable because it is easy.

The degree of overlap (coefficient) of the adjacent monofilament in the cross section of the warp and weft constituting the rolled-up lightweight fabric needs to be 0.6 to 1 in any of the warpage, and preferably 0.8 ~ 1. It is particularly preferable that the degree of redundancy is within the range, and that the degree of redundancy is within the range in both the direction and the direction. Here, the redundancy in the present invention is the ratio of the number of adjacent yarns overlapping when 50 adjacent yarns are observed for a total of 50 yarns. If the overlap degree of the warp is less than 0.6, there is a tendency that voids are likely to be formed between the warp and / or weft, and the initial air permeability and the air permeability after the bias deformation tend to increase.

Particularly, when the cloth is used for a down jacket or a pile of a duvet, the air permeability is preferably 0.3 to 1.5 cc / cm ² sec, more preferably 0.3 to 1.0 cc / cm < ² > sec.

Also, even after the bias deformation, the air permeability is preferably 0.3 to 1.5 cc / cm ² sec, more preferably 0.3 to 1.0 cc / cm ² sec. When the air permeability of the fabric is within the above range, it is preferable because the batting is not easily released from the fabric.

When the silicone resin is processed to exhibit a sliding effect, the amount of the silicone resin is preferably 0.1 to 10.0 wt% with respect to the dough. Particularly, the adhesion amount of the silicone resin is more preferably 0.5 to 3.0 wt% with respect to the base paper because it is less likely to cause other defects such as braided deformation. When the deposition amount is within this range, the tear strength is increased by 10 to 50% as compared with the case where no silicone resin is present. If the adhesion amount of the silicone resin is 10% or more, tearing is improved, but since the bias deformation is large, the air permeability after the bias deformation becomes large, and the down performance can not be obtained.

The method of resin processing is not particularly limited, but methods such as a method of processing by DIP-NIP method after dyeing, a method of processing by a suction method, and a method of mixing and processing in a coating agent are suitably used. A method of processing by the DIP-NIP method is particularly suitable in that the processing agent is firmly adhered to the surface of the raw paper at the final stage of the processing step. The drying temperature is not particularly problematic at the finishing temperature of a typical fabric. In addition to the effect of improving the tear strength, the effect of smoothing and softening the feeling can also be attained simultaneously with the silicone-based resin processing. By this effect, when used as sports medicine or bedding, it is free from roughness and good touch.

The calendar condition in the processing step is very important in order that the degree of overlap between adjacent monofilaments on the cross section of the weft and the warp constituting the fabric is 0.6 or more in any of the warp. In the case of a paper cloth, particularly, in applications where a filling cotton such as a down cloth is used, calendering is often used to suppress drop-down, and the fibers on the surface are pressed with heat by calendering to suppress air permeability, And suppression of dropout. However, when excessive calendering is performed, the monofilament in the multifilament is excessively compressed, and the degree of overlapping of warp and / or weft yarns is increased, but there is a possibility that the tear strength of the fabric is remarkably lowered. Calendering is performed under special conditions to control the state of the surface, so that low air permeability is maintained even when the bias is deformed.

The type, pressure, temperature, and speed of the calender roll are controlled so that the degree of overlap between adjacent warp yarns constituting the fabric and the adjacent monofilament in the weft yarn is 0.6 or more. (TG + TM) / 2-30 ° C to (TG + TM) / (TG + TM) when the glass transition point of the material is TG (TG + TM) / 2-20 DEG C, more preferably (TG + TM) / 2-20 DEG C, 2-15 ° C to (TG + TM) / 2 + 15 ° C. When the fabric is a mixed product of a plurality of materials, the lowest glass transition point and melting point of the fiber material on the side where the metal surface of the calender reaches is adopted. If the calender temperature is excessively high, the surface of the fabric becomes hard and the air permeability at the time of bias deformation is not maintained, which is not preferable. If the calender temperature is too low, ventilation is large and the degree of overlap between the warp yarns constituting the fabric and the adjacent monofilaments on the cross section of the weft yarn is undesirably low.

The calender pressure is preferably in the range of 100 to 800 kgf / cm (per 160 cm roll width, 16 to 128 t (ton) / 150 cm width when the width of the paper is 150 cm), and 200 to 600 kgf / 32 to 96 t) is more preferable. If the pressure is excessively applied, the raw paper becomes hard, and the degree of overlap between the warp constituting the fabric and the adjacent monofilament in the cross section of the weft becomes large, but the degree of air permeability at the time of the bias deformation becomes large. In addition, if the pressure is too low, the initial air permeability of the raw paper becomes large, and the degree of overlap between adjacent monofilaments on the cross section of the warp and weft constituting the fabric is not preferable. The calender speed is also important, and calendering is preferably performed at 5 to 30 m / min, and particularly preferably at 10 to 20 m / min.

(T- (TG + TM) / 2} / 2 + (P-1) when the calender roll temperature is T (° C), the pressure is P (t / breadth width 150 cm) 25) + (10-S) is preferably from 10 to 50, and more preferably from 15 to 40. Further, And it is more preferable to process it 2-3 times under the conditions of the calendar index 15-40. By using these conditions, low air permeability can be maintained even when the bias is deformed.

The material of the calender is not particularly limited, but one roll is preferably made of metal. The metal roll can control its own temperature, and can also uniformly compress the raw paper surface. The other roll is not particularly limited, but an elastic roll such as a paper roll, a cotton roll, and a resin roll may be used in addition to the metal roll. When a resin roll is used, a nylon agent is preferably used as the surface material.

The nylon raw yarn is subjected to the influence of moisture and is susceptible to the influence of the swelling and air permeability. However, by cooling the yarn early and setting the yarn forming temperature to 50 DEG C or less, the yarn is fixed, and the lamination between yarns and yarns becomes strong, It is possible to suppress the deviation of the lamination, that is, the increase in air permeability, in the deformation.

The loom used for weaving the fabric is not particularly limited, and a waterjet loom, an air jet loom, or a rapier loom can be used. After the weaving, the fabric can be subjected to refining, relaxation, presetting, dyeing and, if necessary, post-processing such as water-repellent processing, absorption processing, antibacterial, deodorization, coating, calendering and the like.

The fabric thus obtained is lightweight, has a greater tear strength and abrasion strength, is smooth and soft in texture, and has a low air permeability, so that it has a down-proof property.

Example

Hereinafter, the present invention will be described in detail by examples and the like.

In the following examples and the like, the following measurement, evaluation method, apparatus and the like were used.

(1) Air permeability

JIS-L-1096 8.27.1 Measured by the method A (Przear method). The unit is cc / cm ² · sec.

(2) Measurement of air permeability after deformation of bias

As shown in Fig. 1, the sample was cut into 15 cm x 15 cm in the bias direction, and the sample was deformed under the following conditions using Tensilon RTC-1210A manufactured by Orientech, The air permeability was determined by the same measurement method.

Clamp spacing (a): 10 cm

Clamp width (b): 6 cm

Biomass load: Load to 2.25 kgf, then return to original.

Tensile speed: 30 mm / min

(3) Unit weight

JIS-L-1096 8.4.2 Determined by the mass per unit area in the standard state of the fabric.

(4) Tear strength

JIS-L-1096 8.15.5 Measured by D method (pendulum method). The unit is N.

(5) Degree of overlap (coefficient) of adjacent monofilaments in the cross section of warp and /

Whether or not the end and the end of the adjacent single filaments are overlapped in the cross section (inclination and / or cross section of the weft yarn) of one or both of the yarn (longitudinal) direction and the lateral do. Make sure that the end of the monofilament of warp or weft and the end of the monofilament of the adjacent warp or weft are overlapped in a straight line. (The total of the numbers of the portions where the end and the end overlap each other) / {the sum of the adjacent portions (50 Position)}. The case where the end and the end of the adjacent single filaments are completely overlapped is 1, and the case where they are not completely overlapped is 0. An example of a cross-sectional photograph is shown in Fig.

[Example 1]

Using a nylon 6 filament (TG 47 ° C, TM 225 ° C) of 22 decitex and 24 filaments at an oblique angle and a nylon 6 filament (TG 47 ° C, TM 225 ° C) of 33 decitex 26 filament at the weft, In a waterjet loom. The obtained fabric was refined and preset according to a conventional method, and then dyed and dried with a liquid dyeing machine. Thereafter, an emulsion of 1% of Nikka Silicone DM-100E manufactured by Nikka Chemical Co., Ltd. as a modified silicone resin and 0.5% of an anionic surfactant (= 300 x 9.807 N) / cm (roll 160 cm, width 150 mm) at a calender temperature of 160 ° C and a calender pressure of 300 kgf / Blanket width 150 cm)), and thermal calendering at a calender speed of 15 m / min was performed twice under the condition of a calendar index of 30. The adhesion amount of the silicone resin was 0.8 wt%.

The properties of the obtained fabric were as follows: cover factor 1801, degree of redundancy of 0.80, width of 0.50, weight per unit weight of the fabric of 40 g / m ² , tear strength of 15 N, upper 13 N and air permeability of 0.7 cc / cm ² sec. Also, the air permeability after the bias strain measurement was 0.9 cc / cm ² sec.

[Example 2]

Using a nylon 6 filament (TG 47 ° C, TM 225 ° C) of 22 decitex 24 filaments at an inclination and a nylon 6 filament (33 ° dtex 26 filament and 33 ° dtex 26 filament) at the weft, Was woven and processed in the same manner as in Example 1.

The obtained fabric had characteristics of cover factor 1953, degree of redundancy of 0.85, width of 0.60, unit weight of fabric of 45 g / m ² , tear strength of 16 N, upper 16 N and air permeability of 0.8 cm ² sec. Also, the air permeability after the bias strain measurement was 0.9 cc / cm ² sec.

[Example 3]

Using a nylon 6 filament (TG 47 ° C, TM 225 ° C) of 11 decitex 8 filaments on the warp and a nylon 6 filament (17 ° C, 225 ° C) of 17 decitex 16 filaments on the weft, ripstop taffeta organization Was woven and processed in the same manner as in Example 1.

The properties of the obtained fabric were Cover Factor 1672, the degree of redundancy was 0.80, the width was 0.15, the weight per unit weight of the fabric was 29 g / m ² , the tear strength was 13 N, the upper was 10 N, and the air permeability was 0.7 cc / cm ² sec. The air permeability after the bias deformation measurement method was 1.2 cc / cm ² sec.

[Example 4]

Using a nylon 6 filament (TG 47 ° C, TM 225 ° C) of 11 decitex 8 filaments on the warp and a nylon 6 filament (TG 47 ° C, TM 225 ° C) of 11 decitex 8 filaments on the weft, Was woven and processed in the same manner as in Example 1.

The properties of the obtained fabric were as follows: cover factor 1685, degree of redundancy of 0.70, transverse 0.20, unit weight of fabric of 26 g / m ² , tear strength of 14 N, upper 14 N and air permeability of 0.3 cc / cm ² sec. The air permeability after the bias deformation measurement was 1.1 cc / cm ² sec.

[Example 5]

Using a nylon 66 (TG 49 ° C, TM 267 ° C) process with a 14 decitex 5 filament on the warp and a nylon 66 process (TG 49 ° C, TM 267 ° C) with 14 decitex 5 filament on the weft, (Calender index 19) under the conditions of pressure "P", temperature "T" and speed "S".

The properties of the obtained fabric were Cover Factor 1960, the degree of redundancy was 0.82, the width was 0.20, the weight per unit weight of the fabric was 30 g / m ² , the tear strength was 11 N, 11 N and the air permeability was 0.9 cc / cm ² sec. The air permeability after the bias deformation measurement was 1.1 cc / cm ² sec.

[Comparative Example 1]

Using a nylon 6 filament (TG 47 ° C, TM 225 ° C) of 56 decitex 48 filaments on the warp and a nylon 6 filament of 56 decitex 48 filaments (TG 47 ° C, TM 225 ° C) on the weft, , The same weaving and processing as in Example 1 were carried out.

The air permeability after the bias deformation measurement was 0.9 cc / cm < ² >, the air permeability was 0.8 cc / cm ² sec and the air permeability after the bias deformation measuring method was 0.9 cc / cm ² Sec, but it was a heavy fabric with a unit weight of the fabric of 73 g / m ² .

[Comparative Example 2]

Using a nylon 66 filament (TG 49 ° C, TM 267 ° C) of 33 decitex 26 filaments at an incline and a nylon 66 filament (TG 49 ° C, TM 267 ° C) of 33 decitex 26 filaments at the weft, The fabric was woven with a waterjet loom, and the same weaving as in Example 1 was performed. Calendering was carried out in the same manner as in Example 1 except that only the calender temperature was changed to 140 占 폚 and the calendar index was changed to 9.

The properties of the obtained fabric were as follows: cover factor 1614, degree of redundancy of 0.50, upper limit of 0.10, unit weight of fabric of 35 g / m ² , tear strength of 18 N, upper 16 N, air permeability of 1.6 cm ² sec, The air permeability after the measurement was 3.5 cc / cm ² sec.

Industrial availability

The cloth-and-paper lightweight fabric according to the present invention has a weight per unit weight of 15 to 50 g / m < ² > and is lightweight and has a degree of overlap of adjacent monofilaments in cross- (Filaments) overlap each other within a predetermined range, the air permeability at the time of bias deformation is small, and the fabric is also excellent in down-proof property. Therefore, And are suitably usable.

Claims (10)

Wherein the warp constituting the fabric and the degree of overlap of adjacent monofilaments on the cross section of the weft yarn are 0.6 or more in any of the warp yarns and the unit weight is 15 to 50 g / m < ² > Wherein the lightweight fabric is a thin, lightweight fabric. The cloth-coated lightweight fabric according to claim 1, which is not coated with a synthetic resin. 3. The release-type lightweight fabric according to claim 1 or 2, wherein the air permeability after the bias deformation is 1.5 cc / cm ² sec or less. The cloth-and-paper lightweight fabric according to any one of claims 1 to 3, wherein the synthetic fiber multifilament has a fineness of 5 to 40 dtex and a monofilament fineness of 0.8 to 2.0 dtex. The method of any one of claims 1 to 4, wherein the texture of the fabric is a taffeta or ripstop taffeta structure, the tear strength is at least 7 N and the cover factor is 1300 to 2000 , And air permeability of 1.5 cc / cm ² sec or less. 6. The release-coated lightweight fabric according to any one of claims 1 to 5, wherein the silicone resin processing is carried out. 7. The parchment based lightweight fabric as claimed in any one of claims 1 to 6, wherein the synthetic fiber multifilament is a polyester fiber or a polyamide fiber. A sports medical care (apparel) using the thin, lightweight fabric according to any one of claims 1 to 7. A futon geodetic sheet using the thin, lightweight fabric according to any one of claims 1 to 7. A fabric for inner back using the knitted, lightweight fabric as claimed in any one of claims 1 to 7.

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