JP2010180517A - Multilayered structural woven or knitted fabric, and textile product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multilayered structural woven or knitted fabric having a multilayered structure of two or more layers, and an excellent quick-drying property, and to provide a textile product. <P>SOLUTION: The multilayered structural woven or knitted fabric has the multilayered structure of the two or more layers. The multilayered structural woven or knitted fabric is obtained by disposing a composite yarn comprising a false-twist crimped yarn having torque in the S-direction and a false-twist crimped yarn having the torque in the Z-direction, and having a torque of not more than 30 T/m in either of the outermost layers. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a multilayer structure woven or knitted fabric excellent in quick-drying and a textile product, which is suitably used for sports apparel, inner apparel, diapers and nursing care medical / hygiene products, bedding bedding and the like.

  In general, hydrophobic fibers such as polyester fibers and polyamide fibers are characterized by a faster drying speed than hydrophilic fibers such as cotton and rayon. For this reason, conventionally, woven and knitted fabrics made of 100% hydrophobic fibers have been used in many clothing articles in order to improve quick drying during sweating and drying after washing.

  Although such hydrophobic fibers are superior to hydrophilic fibers in their quick-drying properties, there are a lot of moisture in clothing items such as hard sports with heavy sweating, outdoor sports and winter sports in the rain and snow, and marine sports in water. In applications that absorb water, discomfort such as a feeling of coldness and stickiness has not been sufficiently eliminated, and a further quick drying property has been desired. In addition, a material with a faster drying speed is also demanded in the summer season when the number of washing increases.

  For this reason, for example, in Patent Document 1, in a multilayered knitted fabric, sweat is transferred from the fabric back surface layer to the surface layer by disposing a fiber having a single yarn fineness smaller than the fibers constituting the back surface layer as the fibers constituting the surface layer. A method of moving and diffusing to improve quick drying has been proposed. However, it was still not sufficient in terms of quick drying.

  It is known that a low-torque composite yarn can be obtained by combining a false twist crimped yarn having an S-direction torque and a false twist crimped yarn having a Z-direction torque (for example, a patent) Reference 2 and Patent Reference 3).

JP 9-316757 A JP 2003-166136 A International Publication No. 2008/001920 Pamphlet

  The present invention has been made in view of the above-described background, and an object thereof is to provide a multilayer structure woven or knitted fabric having a multilayer structure of two or more layers, and a multilayer structure woven or knitted fabric excellent in quick-drying and a textile product. It is in.

  As a result of intensive studies to achieve the above-mentioned problems, the inventors of the present invention have a low torque composed of a false twist crimped yarn having a torque in the S direction and a false twist crimped yarn having a torque in the Z direction. It has been found that when a composite yarn is used for either outermost layer of a multi-layer structure woven or knitted fabric and textile products such as clothing are obtained so that the outermost layer is located on the skin side, extremely fast drying properties can be obtained. The present invention has been completed through repeated studies.

  Thus, according to the present invention, “a multi-layered woven or knitted fabric having a multilayer structure of two or more layers, a false twisted crimped yarn having torque in the S direction and a false twisted crimped yarn having torque in the Z direction” Is provided with a composite yarn having a torque of 30 T / m or less that is arranged in the outermost layer of the multilayer structure woven or knitted fabric.

  At that time, it is preferable that the composite yarn is subjected to interlace processing. Moreover, it is preferable that the fiber which comprises the said composite yarn is a polyester fiber. Moreover, it is preferable that the single yarn fineness of the fiber which comprises the said composite yarn is 4 dtex or less. The crimp rate of the composite yarn is preferably 2% or more.

  In the multi-layered woven or knitted fabric of the present invention, it is preferable that a multifilament having a single yarn fineness of 4.0 dtex or less is disposed on the outermost layer opposite to the outermost layer on which the composite yarn is disposed. In that case, it is preferable that the multifilament is a false twist crimped yarn having a single yarn fineness of 1.2 dtex or less.

In the multilayer structure woven or knitted fabric of the present invention, it is preferable that the other fibers include ultrafine fibers having a single fiber diameter of 1000 nm or less. In addition, the other fibers may include polyether ester fibers composed of a polyether ester elastomer having polybutylene terephthalate as a hard segment and polyoxyethylene glycol as a soft segment, or a composite yarn containing the polyether ester fiber. preferable. Moreover, it is preferable that the composite fiber by which the polyester component and the polyamide component were joined by the side-by-side type as another fiber is contained. Moreover, it is preferable that a multilayer structure woven or knitted fabric has a three-layer structure of an outermost layer, an intermediate layer, and an outermost layer. Moreover, it is preferable that the multilayer structure woven or knitted fabric is a knitted fabric. The basis weight of the multilayer structure woven or knitted fabric is preferably 200 g / m ² or less. Moreover, it is preferable that the multilayer structure woven or knitted fabric is subjected to sweat absorption. Moreover, it is preferable that the moisture remaining rate in the back surface of a multilayer structure woven or knitted fabric is 20% or less.

However, the moisture remaining rate is measured as follows. In a room adjusted to a temperature of 20 ° C. and a humidity of 65% RH, 0.1 cc of distilled water was dropped on the back of the knitted fabric on a 10 cm square sample, and after 3 minutes, the knitted fabric was sandwiched with filter paper and a load of 10 g / cm ² was applied. Multiply and calculate the residual moisture rate from the increased weight of the filter paper after 30 seconds.
Water remaining rate [%] = ((filter paper weight [gr] after dropping water)-(filter paper weight [gr] before dropping water)) / 0.1 × 100

  In addition, according to the present invention, sports clothing, inner clothing, medical / hygiene products for diapers and care sheets, and bedding using the multilayered woven or knitted fabric as described above so that the back layer is located on the skin side Any textile product selected from the group consisting of bedding is provided.

  ADVANTAGE OF THE INVENTION According to this invention, it is a multilayer structure woven / knitted fabric which has a multilayer structure of two or more layers, Comprising: The multilayer structure woven / knitted fabric excellent in quick-drying property and a fiber product are obtained.

It is a figure showing one mode of the present invention typically. It is a figure showing one mode of the present invention typically. It is a figure showing one mode of the present invention typically. It is a figure showing one mode of the present invention typically. It is explanatory drawing which shows an example of the single yarn fiber cross-sectional shape which can be employ | adopted in this invention. 1 is a knitting organization chart used in Example 1. FIG. 3 is a knitting structure chart used in Comparative Example 1. FIG.

Hereinafter, embodiments of the present invention will be described in detail.
First, the multilayer woven or knitted fabric of the present invention has a multilayer structure of two or more layers, and the number of layers of the woven or knitted fabric is not particularly limited. However, in order to maintain a soft texture, two layers (outermost layer and outermost layer) are used. Outer layer) or three layers (outermost layer, intermediate layer and outermost layer) are preferred. In the present invention, when using the multi-layer structure woven or knitted fabric, the outermost layer located on the most skin side is referred to as a back layer, and the outermost layer located on the most outside side is referred to as a surface layer.

  In addition, the outermost layer (preferably the back layer) of the outermost layers includes a false twist crimped yarn having torque in the S direction and a false twist crimped yarn having torque in the Z direction. A composite yarn having a torque of 30 T / m or less is arranged. The composite yarn may be contained in both of the two outermost layers, but is preferably contained only in one outermost layer.

  Torque is reduced by setting the false twist in the first heater zone to the false twist crimped yarn, so-called one heater false twist crimped yarn, and further introducing the yarn into the second heater zone and subjecting it to relaxation heat treatment. In addition, there is a so-called second heater false twist crimped yarn. Further, depending on the direction of twisting, there are a false twist crimped yarn having a torque in the S direction and a false twist crimped yarn having a torque in the Z direction. In the present invention, these false twist crimped yarns can be used.

The composite yarn can be produced, for example, by the following method. That is, a one-heater false twisted crimped yarn is obtained by twisting the yarn with a twisting device via a first roller and a heat treatment heater having a set temperature of 90 to 220 ° C. (more preferably 100 to 190 ° C.). It may be obtained, or a second heater false twisted crimped yarn may be obtained by introducing it into the second heater zone and subjecting it to a relaxation heat treatment if necessary. The draw ratio during false twisting is preferably in the range of 0.8 to 1.5, and the false twist number is the formula of false twist number (T / m) = (32500 / (Dtex) ^1/2 ) × α. α = 0.5 to 1.5 is preferable, and usually 0.8 to 1.2. However, Dtex is the total fineness of the yarn. As the twisting device to be used, a disk-type or belt-type frictional twisting device is suitable because it is easy to thread and there is little yarn breakage, but a pin-type twisting device may also be used. Further, depending on the direction of twisting, the torque of the false twist crimped yarn can be selected from the S direction or the Z direction. Next, the composite yarn is obtained by combining two or more types of false twist crimped yarn.

  It is preferable that the composite yarn is entangled by interlace processing. The number of entanglements (interlaces) is preferably in the range of 30 to 90 / m in order not to impair the soft texture and stretchability. If the number is greater than 90 / m, the soft texture and stretchability may be impaired. On the other hand, when the number is less than 30 / m, the converging property of the composite yarn becomes insufficient, and the knitting property may be impaired. In addition, the entanglement process (interlace process) may be performed using a normal interlace nozzle.

  It is important that the torque of the composite yarn thus obtained is 30 T / m or less (preferably 10 T / m or less, particularly preferably non-torque (0 T / m)). By using such a low-torque composite yarn for the outermost layer (preferably the back layer), it becomes bulky, and after absorbing sweat perspired quickly during use, it can be quickly transferred to another layer and is extremely excellent. Quick drying is obtained. The torque is preferably as small as possible, and most preferably non-torque (0 T / m). In order to achieve non-torque in this way, when the false twisted crimped yarn having the torque in the S direction and the false twisted crimped yarn in the Z direction are combined, they have the same torque except that the direction of the torque is different. Two types of false twist crimped yarn may be used.

  In the composite yarn, the crimp rate is preferably 2% or more (more preferably 10 to 20%). If the crimp ratio is less than 2%, there is a possibility that sufficient soft texture and stretchability cannot be obtained.

  The composite yarn preferably has a single yarn fineness of 4 dtex or less (preferably 0.00002 to 2.0 dtex, particularly preferably 0.1 to 2.0 dtex). The smaller the single yarn fineness, the better, and the single yarn fiber diameter called nanofiber may be 1000 nm or less. If the single yarn fineness is larger than 4 dtex, a soft texture may not be obtained. The total fineness of the composite yarn is preferably in the range of 33 to 220 dtex. Furthermore, the number of filaments of the composite yarn is preferably in the range of 50 to 300 (more preferably 100 to 300).

  In addition, the single yarn cross-sectional shape of the composite yarn may be a normal round cross-section, or may be an irregular cross-sectional shape other than the round cross-section. Examples of such irregular cross-sectional shapes include triangles, squares, crosses, flats, flats with constrictions, H-types, and W-types. By adopting these atypical cross-sectional shapes, water absorbability can be imparted to the knitted fabric. In particular, by adopting a flattened irregular cross-sectional shape with a neck as shown in FIG. 5, not only water absorption but also particularly excellent softness can be imparted to the knitted fabric. At that time, the cross-sectional flatness expressed by the ratio B / C1 of the flat cross-sectional shape with the length B in the longitudinal centerline direction to the maximum width C1 in the direction perpendicular to the longitudinal centerline direction is 2 It is preferable from the point of the softness of a knitted fabric that it exists in the range of -6 (preferably 3.1-5.0). Further, the ratio C1 / C2 of the maximum value C1 of the width to the minimum value C2 is within the range of 1.05 to 4.00 (more preferably 1.1 to 1.5). This is preferable.

  The fibers constituting the composite yarn are not particularly limited, and polyester fibers, acrylic fibers, nylon fibers, rayon fibers, acetate fibers, and natural fibers such as cotton, wool, silk, and composites thereof can be used. It is. Polyester fibers are particularly preferable. As such polyester, terephthalic acid is the main acid component, and alkylene glycol having 2 to 6 carbon atoms, that is, at least one selected from the group consisting of ethylene glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol and hexamethylene glycol. Polyesters with seeds as the main glycol component are preferred. Of these, polyester (polyethylene terephthalate) containing ethylene glycol as the main glycol component or polyester (polytrimethylene terephthalate) containing trimethylene glycol as the main glycol component is particularly preferable.

  Such a polyester may have a small amount (usually 30 mol% or less) of a copolymer component as required. In this case, examples of the bifunctional carboxylic acid other than terephthalic acid used include isophthalic acid, naphthalene dicarboxylic acid, diphenyldicarboxylic acid, diphenoxyethanedicarboxylic acid, β-hydroxyethoxybenzoic acid, P-oxybenzoic acid, 5 -Aromatic, aliphatic, and alicyclic bifunctional carboxylic acids such as sodium sulfoisophthalic acid, adipic acid, sebacic acid, and 1,4-cyclohexanedicarboxylic acid. Examples of the diol compound other than the glycol include aliphatic, alicyclic and aromatic diol compounds such as cyclohexane-1,4-dimethanol, neopentyl glycol, bisphenol A and bisphenol S, and polyoxyalkylene glycol. Can give.

  The polyester may be synthesized by any method. For example, in the case of polyethylene terephthalate, terephthalic acid and ethylene glycol are directly esterified, or a lower alkyl ester of terephthalic acid such as dimethyl terephthalate is transesterified with ethylene glycol, or terephthalic acid and ethylene oxide are used. And the first stage reaction to produce a glycol ester of terephthalic acid and / or its low polymer, and the first stage reaction product is heated under reduced pressure until the desired degree of polymerization is reached. It may be produced by a second stage reaction for condensation reaction. The polyester is a material-recycled or chemical-recycled polyester, or a catalyst containing a specific phosphorus compound and a titanium compound as described in JP-A-2004-270097 and JP-A-2004-212268. Polyester obtained by using may be used. Further, it may be a biodegradable polyester such as polylactic acid or stereocomplex polylactic acid.

  When the ultraviolet absorbent is contained in the polyester in an amount of 0.1% by weight or more (preferably 0.1 to 5.0% by weight) with respect to the weight of the polyester, ultraviolet shielding property is added to the multilayer structure woven or knitted fabric. Examples of such UV absorbers include benzoxazine-based organic UV absorbers, benzophenone-based organic UV absorbers, benzotriazole-based organic UV absorbers, and salicylic acid-based organic UV absorbers. Of these, benzoxazine-based organic ultraviolet absorbers are particularly preferred because they do not decompose at the spinning stage.

  Suitable examples of such benzoxazine-based organic ultraviolet absorbers are those disclosed in JP-A-62-1744. That is, 2-methyl-3,1-benzoxazin-4-one, 2-butyl-3,1-benzoxazin-4-one, 2-phenyl-3,1-benzoxazin-4-one, 2,2 '-Ethylenebis (3,1-benzoxazin-4-one), 2,2'-tetramethylenebis (3,1-benzoxazin-4-one), 2,2'-p-phenylenebis (3 1-benzoxazin-4-one), 1,3,5-tri (3,1-benzoxazin-4-one-2-yl) benzene, 1,3,5-tri (3,1-benzoxazine- 4-on-2-yl) naphthalene and the like.

  When the matting agent (titanium dioxide) is contained in the polyester in an amount of 0.2% by weight or more (preferably 0.3 to 2.0% by weight) relative to the weight of the polyester, the multilayer structure woven or knitted fabric has permeability. Added and preferred.

  In addition, the polyester may contain fine pore forming agents (organic sulfonic acid metal salts), anti-coloring agents, heat stabilizers, flame retardants (antimony trioxide), fluorescent whitening agents, coloring pigments, antistatic agents, if necessary. One or more of an agent (metal sulfonate), a hygroscopic agent (polyoxyalkylene glycol), an antibacterial agent, and other inorganic particles may be included.

  In the multi-layer structure knitted or knitted fabric of the present invention, the fiber disposed in a layer other than the outermost layer where the composite yarn is disposed is not particularly limited. It is preferable that multifilaments having a single yarn fineness of 4.0 dtex or less (more preferably 0.00002 to 2.0 dtex, particularly preferably 0.1 to 2.0 dtex) made of a polyester fiber are arranged. It is also preferable to use a false twist crimped yarn having a single yarn fineness of 1.2 dtex or less (more preferably 0.00002 to 1.2 dtex) as the multifilament in order to further improve quick drying.

  Further, in order to add water absorption to the multilayer structure woven or knitted fabric of the present invention, as other fibers, an ultrafine fiber having a single fiber diameter of 1000 nm or less described in JP-A-2007-291567, JP-A-2005-36374 JP-A-2006-118062, a polyether ester fiber comprising a polyether ester elastomer having polybutylene terephthalate as a hard segment and polyoxyethylene glycol as a soft segment, or a composite yarn containing the polyether ester fiber It is also preferable to include a composite fiber in which a polyester component and a polyamide component are bonded in a side-by-side manner as described in the publication.

  For example, as schematically shown in FIG. 1, an embodiment in which a multifilament (or false twisted crimped yarn) is arranged on the surface layer and the composite yarn and false twisted crimped yarn are arranged on the back layer, schematically shown in FIG. As shown schematically in FIG. 3, a multifilament (or false twist crimped yarn) is provided on the surface layer, a false twist crimped yarn is provided on the intermediate layer, and the composite yarn is provided on the back layer. The multi-filament (or false twist crimped yarn) is arranged on the surface layer, and the composite yarn and the other fibers (ultrafine fibers having a single fiber diameter of 1000 nm or less, the polyetherester fiber, or the composite fiber) are arranged on the back layer. As schematically shown in FIG. 4, the surface layer is multifilament (or false twisted yarn), and the intermediate layer is the other fiber (ultrafine fiber having a single fiber diameter of 1000 nm or less or the polyether ester). Fiber or The composite fibers), such as embodiments which arranged the composite yarn on the back layer.

  In the multilayer structure woven or knitted fabric of the present invention, the woven or knitted structure is not particularly limited as long as it is a woven or knitted fabric having a multilayer structure of two or more layers. Round knitted fabrics such as double pickets, single warp knitted fabrics such as half, back half, quins cord and shark skin, and double warp knitted fabrics such as double raschel and double tricot. Examples of the woven fabric include multi-layer woven fabrics that can have a multi-layered structure such as a warp double woven fabric and a weft double woven fabric. Among these, a knitted fabric is preferable in terms of quick drying.

The woven / knitted density of the woven / knitted fabric is not particularly limited. However, in terms of water absorption and texture, the woven / knitted fabric has a warp density of 50 to 200 / 2.54 cm and a weft density of 50 to 200 / 2.54 cm. The range is appropriate. In the case of a knitted fabric, a range of 30 to 100 courses / 2.54 cm, 20 to 80 wales / 2.54 cm is appropriate. Moreover, in order not to impair the lightness, the basis weight finally obtained is preferably 200 g / m ² or less (more preferably ²⁰ to 200 g / m ² ).

  The multilayer structure woven or knitted fabric of the present invention can be easily knitted or woven using the above-mentioned composite yarn using a normal knitting machine or loom. In addition, the multilayer structure woven or knitted fabric of the present invention may be used in a conventional dye finish processing, water absorption processing, water repellent processing, brushed processing, ultraviolet shielding or antibacterial agent, Various processes that provide functions such as odorants, insect repellents, phosphorescent agents, retroreflective agents, and negative ion generators may be additionally applied. Here, as sweat absorption processing (water absorption processing), a hydrophobizing agent such as polyethylene glycol diacrylate or a derivative thereof, or a polyethylene terephthalate-polyethylene glycol copolymer is processed on the knitted fabric in the same bath, or in a final setting step. It is preferable to apply to the knitted fabric. Moreover, it is preferable that the adhesion amount of this hydrophilizing agent is the range of 0.25 to 0.50 weight% with respect to the weight of a knitted fabric.

  In the multilayer structure woven or knitted fabric thus obtained, the composite yarn is arranged in either one of the outermost layers, and the composite yarn is bulky (has a bulky property), so it quickly absorbs sweat perspired. Since it transfers to another layer rapidly, very quick drying property is obtained. In addition, there is little return of sweat and comfort is excellent.

Here, it is preferable that the moisture remaining rate on the outermost layer surface on which the composite yarn is disposed is 20% or less. However, the moisture remaining rate is measured as follows. In a room adjusted to a temperature of 20 ° C. and a humidity of 65% RH, 0.1 cc of distilled water was dropped on the back of the knitted fabric on a 10 cm square sample, and after 3 minutes, the knitted fabric was sandwiched with filter paper and a load of 10 g / cm ² was applied. Multiply and calculate the residual moisture rate from the increased weight of the filter paper after 30 seconds.
Moisture remaining rate [%] = ((filter paper weight [gr] after dripping water) − (filter paper weight [gr] before dripping water))) ÷ 0.1 × 100

Moreover, it is preferable that it is 100gr (98cN) or less by the stickiness defined below. However, stickiness shall be measured as follows. A woven or knitted fabric having a length of 15 cm and a width of 6 cm is placed on a metal roller having a diameter of 8 cm, one end is attached to a stress strain gauge, and a clip having a weight of 9.8 cN (10 gf) is attached to the other end of the woven or knitted fabric. Next, while rotating the metal roller at a surface speed of 7 cm / sec, 5 cm ³ of water was injected between the metal roller and the knitted fabric with a syringe, and the tension applied to the woven or knitted fabric was measured with a stress strain gauge. The stickiness is evaluated by the maximum value.

  Moreover, it is preferable that it is 30 minutes or less by the drying rate defined below. However, the drying rate shall be measured as follows. In a room adjusted to a temperature of 20 ° C. and a humidity of 65% RH, 1 cc of distilled water was dropped onto a sample cut into a 10 cm square, the weight of the dough was measured over time, and the drying speed (depending on the time until the dripped water completely dried) Evaluate the drying time.

  Next, the textile product of the present invention is a sports apparel, an inner apparel, a diaper or a care sheet, wherein the multilayer structure woven or knitted fabric is used so that the outermost layer on which the composite yarn is arranged is located on the skin side. Any textile product selected from the group consisting of medical and hygiene products and bedding.

  Since such a textile product uses the multilayer structure woven or knitted fabric so that the outermost layer on which the composite yarn is arranged is located on the skin side, it quickly absorbs sweat perspired and quickly transfers to other layers. , Extremely quick drying properties can be obtained. In addition, there is little return of sweat and comfort is excellent.

(1) Torque A sample (crimped yarn) of about 70 cm is stretched horizontally, an initial load of 0.18 mN × display tex (2 mg / de) is hung at the center, and both ends are aligned.
The yarn begins to rotate due to the residual torque, but keeps the initial load until the initial load stops to obtain a twisted yarn. The twisted yarn having a length of 25 cm is measured with a tester under a load of 17.64 mN × display tex (0.2 g / de). The obtained twist number (T / 25 cm) is quadrupled to obtain the torque (T / m).

(2) Degree of interlacing Take the length of 1m under the load of 8.82mN x display tex (0.1g / de) for the entangled yarn, read the number of knots after 24 hours of shrinkage at room temperature , And display in ke / m.

(3) Crimp rate The test yarn was wound around a measuring machine having a circumference of 1.125 m to prepare a skein with a dryness of 3333 dtex. The skein is suspended from a hanging nail of the scale plate, an initial load of 6 g is applied to the lower part thereof, and a length L0 of the skein when a load of 600 g is further applied is measured. Immediately thereafter, the load is removed from the skein, the scale plate is removed from the hanging nail, and the skein is immersed in boiling water for 30 minutes to develop crimps. The skein after the boiling water treatment is taken out from the boiling water, the moisture contained in the skein is absorbed and removed by a filter paper, and air-dried at room temperature for 24 hours. The air-dried skein is hung on a hanging nail of the scale plate, a load of 600 g is applied to the lower part, the skein length L1a is measured after 1 minute, the load is removed from the skein, and the skein after 1 minute. The length L2a is measured. The crimp rate (CP) of the test filament yarn is calculated by the following formula.
CP (%) = ((L1a−L2a) / L0) × 100

(4) Moisture remaining rate In a room adjusted to a temperature of 20 ° C. and a humidity of 65% RH, 0.1 cc of distilled water was dropped on the back of the knitted fabric in a sample cut to 10 cm square, and the sample was sandwiched with filter paper at 10 g / A load of cm ² is applied, and the residual moisture rate is calculated from the increased weight of the filter paper after 30 seconds.
Moisture remaining rate [%] = ((filter paper weight [gr] after dripping water) − (filter paper weight [gr] before dripping water))) ÷ 0.1 × 100

(5) Stickiness A knitted fabric with a length of 15 cm and a width of 6 cm is placed on a metal roller with a diameter of 8 cm, one end is attached to a stress strain gauge, and a clip with a weight of 9.8 cN (10 gf) is attached to the other end of the knitted fabric. Install. Next, while rotating the metal roller at a surface speed of 7 cm / sec, 5 cm ³ of water is injected between the metal roller and the knitted fabric with a syringe, and the tension applied to the knitted fabric at this time is measured with a stress strain gauge. The stickiness is evaluated by the maximum value. 100 g (98 cN) or less is considered good.

(6) Drying speed In a room adjusted to a temperature of 20 ° C. and a humidity of 65% RH, 1 cc of distilled water was dropped on a sample cut into a 10 cm square, and the weight of the dough was measured over time until the dripped water was completely dried. The drying rate is evaluated by time. If it is 30 minutes or less, it is considered good.

(7) Melt viscosity The polymer after drying is set in an orifice set at the melter melting temperature at the time of spinning, melted and held for 5 minutes, then extruded under several levels of load, and the shear rate and melt viscosity at that time are determined. Plot. By gently connecting the plots, a shear rate-melt viscosity curve is created, and the melt viscosity when the shear rate is 1000 sec- ¹ is observed.

(8) Dissolution speed The yarn is wound at a spinning speed of 1000 to 2000 m / min with a 0.3φ-0.6L × 24H base of each of the sea and island components, and the residual elongation is in the range of 30 to 60%. Then, a multifilament of 84 dtex / 24 fil is produced. The weight reduction rate is calculated from the dissolution time and the dissolution amount at a bath ratio of 100 at the temperature at which the solvent is to be dissolved.

(9) Single fiber diameter After taking a photograph of the knitted fabric with an electron microscope, the single fiber diameter is measured with an n number of 5, and the average value is obtained.

[Example 1]
Using ordinary polyethylene terephthalate (matting agent content: 0.3% by weight), melt spinning at 280 ° C. from a normal spinning machine, taking up at a speed of 2800 m / min, winding without drawing, and semi-drawing The obtained polyester yarn 90 dtex / 48 fil (single yarn fiber cross section: round cross section) was obtained.
Next, using the polyester yarn, simultaneous drawing false twist crimping is performed under the conditions of a draw ratio of 1.6 times, a false twist number of 2500 T / m (S direction), a heater temperature of 180 ° C., and a yarn speed of 350 m / min. It was.
Further, using the polyester yarn, simultaneous drawing false twist crimping is performed under the conditions of a draw ratio of 1.6 times, a false twist number of 2500 T / m (Z direction), a heater temperature of 180 ° C., and a yarn speed of 350 m / min. It was.
Next, the false twisted crimped yarn having the torque in the S direction and the false twisted crimped yarn having the torque in the Z direction were combined to perform an air entanglement treatment, and a composite yarn (110 dtex / 96 fill, crimp rate) 7%, torque 0 T / m). In the air entanglement treatment, an interlace nozzle was used, and an entanglement of 60 pieces / m was applied at an overfeed rate of 1.0% and a pneumatic pressure of 0.3 MPa (3 kgf / cm ² ).

Next, using a 28 gauge circular knitting single machine, the composite yarn (A) and ordinary polyethylene terephthalate multifilament false twist crimped yarn 84 dtex / 72 fil (B) and polyethylene terephthalate multifilament yarn 84 dtex / 72 fil (C ), The cord knitted fabric was knitted according to the knitting structure shown in FIG. (The density of the raw machine is 42 courses / 2.54 cm, 30 wales / 2.54 cm, basis weight 58 g / m ² ) Next, the above-mentioned knitted fabric is subjected to normal dyeing finishing (high-pressure dyeing at 130 ° C. for 30 minutes, as a final set) 170 ° C. dry heat set). The obtained knitted fabric was a knitted fabric having a two-layer structure in which one outermost layer was composed of A, B, and C, and the other outermost layer was composed of A and B. This knitted fabric has a moisture remaining rate of 15% on the back / 45% on the front, a stickiness of 75 g (74 cN), a drying speed of 19 minutes, and the sweat absorbed on one outermost layer surface is instantaneously moved to the opposite surface, There was little rewetting from the back to the skin, and the knitted fabric had a fast drying speed of 19 minutes.
Next, when the knitted fabric is worn by wearing the sports clothing and the inner clothing using the outermost layer on which the composite yarn is arranged positioned on the skin side, there is little reversion from the clothing to the skin and excellent in quick-drying properties. It was comfortable.

[Example 2]
In Example 1, the total fineness / number of single yarns of the semi-stretched polyester yarn was changed to 56 dtex / 12 fil, and 66 dtex / 24 fil non-torque yarn was obtained after processing.
Next, using a 28 gauge circular knitting double machine, the composite yarn (A) and ordinary polyethylene terephthalate multifilament false twist crimped yarn 33 dtex / 12 fil (B) and polyethylene terephthalate multifilament yarn 84 dtex / 72 fil (C ) Was used to knitting a Ura-no-Kokoko knitted fabric according to the knitting structure shown in FIG. 7 (the density of the green machine was 46 courses / 2.54 cm, 37 wales / 2.54 cm, basis weight 80 g / m ² ). Subsequently, the above-mentioned knitted fabric was subjected to a normal dyeing finishing process (high-pressure dyeing at 130 ° C. for 30 minutes, and a dry heat set at 170 ° C. as a final set). The obtained knitted fabric was a knitted fabric having a two-layer structure in which one outermost layer was composed of C and the other outermost layer was composed of A and B. This knitted fabric has a moisture remaining rate of 4% on the back side / 38% on the front side, a stickiness of 52 g (51 cN), a drying rate of 21 minutes, and the sweat absorbed by one outermost layer surface (back surface). The knitted fabric was moved instantly, with little wetting back from the back to the skin, and fast drying.

[Example 3]
In Example 2, the following nanofibers were used in place of the B yarn, and the knitted fabric was knitted in the same manner as in Example 2 (the density of the green machine was 42 courses / 2.54 cm, 36 wals / 2 .54 cm, basis weight 74 g / m ² ).

(Nanofiber)
Polyethylene terephthalate (melt viscosity at 280 ° C., 1200 poise, matting agent content: 0 wt%) as island component, 6 mol% of 5-sodium sulfoisophthalic acid and polyethylene glycol of number average molecular weight 4000 as sea component A sea-island type composite unstretched fiber having a melting rate of 1750 poise at 280 ° C. (dissolution rate ratio (sea / island) = 230), sea: island = 30: 70, and number of islands = 836 Was melt-spun at a spinning temperature of 280 ° C. and a spinning speed of 1500 m / min, and then wound up.
The obtained undrawn yarn was roller-drawn at a drawing temperature of 80 ° C. and a draw ratio of 2.5 times, and then heat-set at 150 ° C. and wound up. The obtained sea-island type composite drawn yarn (fiber for nanofiber) was 56 dtex / 10 fil. When the cross section of the fiber was observed with a transmission electron microscope TEM, the shape of the island was round and the diameter of the island was 710 nm. It was.

Next, the knitted fabric was subjected to dyeing finish in the same manner as in Example 2 after reducing the amount of alkali by 30% at 70 ° C. with a 3.5% NaOH aqueous solution in order to remove sea components of the sea-island type composite drawn yarn. Processing was performed.
The obtained knitted fabric was a knitted fabric having a two-layer structure in which the back surface was composed of C and the surface was composed of A and B (nanofibers having a single fiber diameter of 710 nm). This knitted fabric has a moisture remaining rate of 5% on the back and 22% on the front, a stickiness of 54 g (53 cN), a drying speed of 22 minutes, and the sweat absorbed on one outermost layer surface (back surface). The knitted fabric was moved instantly, with little wetting back from the back to the skin, and fast drying.

[Comparative Example 1]
In Example 2, a knitted fabric was obtained by using a polyethylene terephthalate multifilament false twist crimped yarn 84 dtex / 72 fil instead of the A yarn and the C yarn (the density of the green machine was 48 course / 2.54 cm, 37 wal / 2.54 cm, basis weight 76 g / m ² ).
Subsequently, the above-mentioned knitted fabric was subjected to a normal dyeing finishing process (high-pressure dyeing at 130 ° C. for 30 minutes, and a dry heat set at 170 ° C. as a final set). The obtained knitted fabric was a knitted fabric having a two-layer structure in which one outermost layer surface (back surface layer) was composed of C and the other outermost layer (surface layer) was composed of A and B. This knitted fabric has a backside of 25% / table 20%, a stickiness of 128 g (125 cN), a drying speed of 38 minutes, and the sweat sucked on one outermost layer surface (back surface) remains on the back surface. The knitted fabric was often wetted back to the skin and dried slowly.

  ADVANTAGE OF THE INVENTION According to this invention, it is a multilayer structure woven / knitted fabric which has a multilayer structure of two or more layers, Comprising: The multilayer structure woven / knitted fabric and textiles excellent in quick-drying are provided, The industrial value is very large.

1 Multifilament (or false twist crimped yarn)
2 False twist crimped yarn 3 Composite yarn 4 Multifilament (or false twist crimped yarn)
5 False twist crimped yarn 6 Composite yarn 7 Multifilament (or false twist crimped yarn)
8 Ultrafine fiber or polyetherester fiber or composite fiber with a single fiber diameter of 1000 nm or less 9 Composite yarn 10 Multifilament (or false twist crimped yarn)
11 Ultrafine fiber or polyetherester fiber or composite fiber having a single fiber diameter of 1000 nm or less 12 Composite yarn

Claims (16)

  A multilayer structure woven or knitted fabric having a multilayer structure of two or more layers, which is composed of a false twist crimped yarn having a torque in the S direction and a false twist crimped yarn having a torque in the Z direction. A multilayered woven or knitted fabric characterized in that a composite yarn having a torque of 1 is arranged in the outermost layer of the multilayered woven or knitted fabric.   The multilayer structure woven or knitted fabric according to claim 1, wherein the composite yarn is interlaced.   The multilayer structure woven or knitted fabric according to claim 1 or 2, wherein the fibers constituting the composite yarn are polyester fibers.   The multilayer structure woven or knitted fabric according to any one of claims 1 to 3, wherein a single yarn fineness of a fiber constituting the composite yarn is 4 dtex or less.   The multilayer structure woven or knitted fabric according to any one of claims 1 to 4, wherein the crimp rate of the composite yarn is 2% or more.   The multilayer structure woven or knitted fabric according to any one of claims 1 to 5, wherein a multifilament having a single yarn fineness of 4.0 dtex or less is arranged on the outermost layer opposite to the outermost layer on which the composite yarn is arranged.   The multilayer structure woven or knitted fabric according to claim 6, wherein the multifilament is a false twist crimped yarn having a single yarn fineness of 1.2 dtex or less.   The multilayer structure woven or knitted fabric according to any one of claims 1 to 7, wherein the other fibers include ultrafine fibers having a single fiber diameter of 1000 nm or less.   The other fiber includes a polyetherester fiber composed of a polyetherester elastomer having polybutylene terephthalate as a hard segment and polyoxyethylene glycol as a soft segment, or a composite yarn containing the polyetherester fiber. The multilayer structure woven or knitted fabric according to any one of -8.   The multilayer structure woven or knitted fabric according to any one of claims 1 to 9, wherein the other fiber includes a composite fiber in which a polyester component and a polyamide component are joined in a side-by-side manner.   The multilayer structure woven or knitted fabric according to any one of claims 1 to 10, wherein the multilayer structure woven or knitted fabric has a three-layer structure of an outermost layer, an intermediate layer, and an outermost layer.   The multilayer structure woven or knitted fabric according to any one of claims 1 to 11, wherein the multilayer structure woven or knitted fabric is a knitted fabric. The multilayer structure woven or knitted fabric according to any one of claims 1 to 12, wherein the basis weight is 200 g / m ² or less.   The multilayer structure woven or knitted fabric according to any one of claims 1 to 13, wherein the multilayer structure woven or knitted fabric is subjected to sweat absorption. The multilayer structure woven or knitted fabric according to any one of claims 1 to 13, wherein a moisture remaining rate on the outermost layer surface on which the composite yarn is arranged is 20% or less.
However, the moisture remaining rate is measured as follows. In a room adjusted to a temperature of 20 ° C. and a humidity of 65% RH, 0.1 cc of distilled water was dropped on the back of the knitted fabric on a 10 cm square sample, and after 3 minutes, the knitted fabric was sandwiched with filter paper and a load of 10 g / cm ² was applied. Multiply and calculate the return rate from the increased weight of the filter paper after 30 seconds.
Water remaining rate [%] = ((filter paper weight [gr] after dropping water)-(filter paper weight [gr] before dropping water)) / 0.1 × 100   Use of the multilayer structure woven or knitted fabric according to any one of claims 1 to 15 for sports apparel, inner apparel, diapers and care sheets, wherein the outermost layer on which the composite yarn is arranged is positioned on the skin side. Any textile product selected from the group consisting of medical / hygiene products and bedding.

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