JP2007084970A - Stretchable warp knitted fabric and it use - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a warp knitted fabric which has excellent stretchability and exhibits excellent moisture retaining property or excellent air permeability depending on circumstances, functions as a wear having excellent moisture retaining property or a wear having excellent air permeability and provides an inner wear, a sport wear, etc., having excellent wearing comfortableness. <P>SOLUTION: The stretchable warp knitted fabric is knitted from a stretch yarn and a non-stretch yarn, has a mesh part which is formed from a non-stretch yarn and in which the sinker loop of a stretch yarn crosses in the wale direction, the length of the mesh part in the warp direction is 3-10 courses and the number of the sinker loops crossing the mesh part is 2-12 per mesh part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stretch warp knitted fabric. In particular, the present invention relates to a stretch warp knitted fabric suitably used for innerwear such as lingerie and foundation, and sportswear such as active wear and leotard.

  In particular, for innerwear such as lingerie and foundation, and sportswear such as active wear and leotard, a stretchable fabric imparted with stretchability by knitting and mixing stretchable yarn such as polyurethane elastic yarn is used. As this stretchable fabric, a knitted fabric such as a warp knitted fabric or a circular knitted fabric is generally used.

  In addition, mesh knitted fabrics with holes (mesh portions) formed in the knitted structure are widely used to provide air permeability when worn on clothes, and conversely, satin-like fabrics are used to provide heat retention. A knitted fabric having a dense surface structure represented by a knitted structure is generally employed.

  Since the mesh knitted fabric in which holes (mesh portions) are formed in the knitted structure is a mesh portion that is intentionally formed into holes in the fabric, the mesh portion is in an open state even when there is no tension. It has become.

For example, as a mesh-like elastic warp knitted fabric suitable for girdle and body suit, etc., a mesh-like elastic warp knitted fabric with a good balance of elongation in the vertical and horizontal directions, with a refreshing feeling and excellent breathability is patented. No. 2657200 (see Patent Document 1). In this mesh-like elastic warp knitted fabric, the first elastic yarn is inserted as a partial weft in the course direction into a mesh knitted ground structure in which inelastic yarn is knitted through two halves through a half set. A warp knitted fabric in which a second elastic yarn is inserted on the wale, and has a characteristic that the space ratio of the stitch is 5.0 to 6.9%, and the elongation ratio in the vertical and horizontal directions is 0.8 to 1.2. It is a mesh-like elastic warp knitted fabric. In this elastic warp knitted fabric, in order to form a mesh portion having a predetermined stitch space ratio, the insertion of the partial weft of the first elastic yarn is arranged off the position of the mesh portion, and the mesh portion is tension-free. Even in the state, it is a hole with open eyes.
Japanese Patent No. 2657200

  Among conventional stretch warp knitted fabrics used in innerwear and sportswear, mesh warp knitted fabrics are breathable but lack heat retention, and warp knitting with a satin-like dense structure The ground has heat insulation but lacks ventilation. Therefore, when conventional stretch warp knitted fabric is used, it is possible to produce innerwear and sportswear that are excellent in either breathability or heat retention, but wear that is superior in heat retention and can exhibit breathability depending on the situation. The manufacture of was difficult.

  By the way, innerwear and sportswear are subject to various daily movements and exercises while wearing them, so when breathability is required to relieve the heat generated by the human body even when wearing warm-wear. Depending on the situation, it may function as wear with excellent heat retention or as wear with excellent breathability, or depending on the wearer's wearing conditions and operating conditions, the degree of warming function and ventilation function of the wear may be partially What is different is required.

  Therefore, the present invention is a warp knitted fabric excellent in stretchability and suitable for wear with good wearing comfort, and has a stretch warp that can exhibit excellent heat retention or excellent breathability depending on the situation. The main purpose is to provide a knitted fabric. And to provide innerwear and sportswear that can function as wear with excellent heat retention depending on the situation and wear with excellent breathability, and also has excellent wear comfort in terms of heat insulation and ventilation For another purpose.

  The present invention employs the following means in order to achieve the object.

  That is, the stretchable knitted fabric of the present invention is a stretchable warp knitted fabric knitted from stretchable yarns and non-stretchable yarns, and there is a mesh portion formed by the non-stretchable yarns. The sinker loop crosses in the horizontal direction, the length of the mesh portion is 3 to 10 courses, and the number of sinker loops crossing the mesh portion is 2 to 8 per mesh portion It is.

  This stretch warp knitted fabric preferably has 20 to 90 mesh portions crossing the sinker loop within a 2.54 cm square range of a non-tensioned warp knitted fabric. Further, the ratio (B / A) of the number of crossings (B) of the elastic yarn crossing the mesh portion to the number of courses (A) of the length of the mesh portion crossing the sinker loop is 0.2 to 4.0. A range is preferable.

  In this stretch warp knitted fabric, the mesh portion is closed in a non-tensioned warp knitted fabric, and the mesh portion is in an open state in a stretched state in the horizontal direction.

  The elastic yarn constituting the elastic warp knitted fabric is preferably a polyurethane elastic yarn of 15 to 156 dtex, and this polyurethane elastic yarn uses a copolyether diol of tetrahydrofuran and 3-alkyltetrahydrofuran as a polymer diol component. It is preferable that the elastic yarn is composed of a polymerized polyurethane elastomer.

  In addition, sportswear and innerwear are manufactured from this stretch warp knitted fabric.

  The stretch warp knitted fabric of the present invention is excellent in stretchability, is a tightly knitted structure in an unstrained state and has excellent heat retention, and stretches in the horizontal direction (even in the diagonal direction with a horizontal component of elongation). In some cases, the mesh portion is open, and heat retention or breathability can be exhibited depending on the situation. And the innerwear and sportswear manufactured using this elastic warp knitted fabric for the main part can exhibit the contradictory function of breathability and heat retention with the same wear. That is, when it is worn in a substantially non-tensioned state, it becomes wear with excellent heat retention, and air permeability is exhibited in a stretched stretched state. Therefore, according to the present invention, even with the same fabric, it is possible to provide a garment that can exhibit heat retention or breathability depending on the wearing situation and depending on the wearing part, and the same fabric can exhibit both breathability and heat retention depending on the situation. It becomes possible to provide innerwear and sportswear with good elasticity.

  Hereinafter, the elastic warp knitted fabric, sportswear, and innerwear of the present invention will be described.

  The stretchable knitted fabric of the present invention is knitted from stretchable yarns and non-stretchable yarns, and a mesh portion is formed by the non-stretchable yarns. Opening and closing of the mesh part is given.

  The stretch yarn used in the present invention is preferably a yarn composed of elastic fibers that inherently have rubber-like elasticity. The elastic fibers include polyurethane elastic yarns, polyether ester elastic yarns, polyamide elastic yarns, etc., thread-like so-called rubber yarns made of natural rubber, synthetic rubber, semi-synthetic rubber, or the like mainly composed of these. An elastic yarn obtained by combining or mixing with an organic synthetic resin. Among these, polyurethane elastic yarn is preferable because it can exhibit excellent elastic characteristics even with fineness.

  This stretchable yarn may be in the form of either a monofilament or a multifilament. The stretchable yarn may be used as a raw yarn as it is, or may be used as a non-stretchable yarn or a processed yarn covered with a stretchable yarn.

  Polyurethane elastic yarns that can be suitably used as stretch yarns are elastic yarns composed of polyurethane and / or polyurethane urea. This polyurethane or polyurethane urea is a polymer containing a urethane bond that is polymerized using a long-chain diol compound, a diisocyanate compound and a chain extender as the main raw material, and depending on the type of the long-chain diol compound that is a soft segment constituent, And polyester or polyether ester. Further, depending on whether a low molecular weight diol compound or a low molecular weight diamine compound is used as a chain extender, it is distinguished from polyurethane (narrow sense) or polyurethane urea. In this specification, polyurethane and polyurethane urea are simply referred to as a generic term. It is called polyurethane.

  Polyurethane is a relatively short-chain segment obtained by reacting a soft segment (a) such as a long-chain polyether segment, a polyester segment or a polyetherester segment with an isocyanate and a diamine or diol as a chain extender. And a hard segment (b).

  Polyether polyurethane uses a polyether diol compound such as polytetramethylene ether glycol or a copolymer thereof as a soft segment constituent, and uses a diisocyanate compound such as diphenylmethane-4,4 diisocyanate as a hard segment constituent, Furthermore, it is a polyurethane produced using a bifunctional hydrogen compound as a chain extender. Polyester polyurethane uses a polyester diol compound such as copolyester diol as a soft segment constituent, a diisocyanate compound such as diphenylmethane-4,4 diisocyanate as a hard segment constituent, and a bifunctional hydrogen as a chain extender. Polyurethane produced using the compound. Further, polyether ester polyurethanes obtained by polymerizing polytetramethylene ether glycol and polybutylene terephthalate as a long-chain diol compound can also be used.

  Polyether segment which is a (co) polymer polymerized from tetramethylene glycol, 3-methyl-1,5-pentanediol, tetrahydrofuran, 3-methyltetrahydrofuran and the like as the soft segment (a) constituting the polyurethane; ethylene Polyester segments polymerized from diols such as glycol, tetramethylene glycol, 2,2-dimethyl-1,3-propanediol and dibasic acids such as adipic acid and succinic acid; poly- (pentane-1,5- It is preferable to use a polyetherester segment obtained from carbonate) diol, poly- (hexane-1,6-carbonate) diol or the like. Among them, from the viewpoint of reducing resistance during elongation and reducing resistance by guides, needles, etc., and preventing yarn breakage during knitting, a copolyether long chain diol of tetrahydrofuran and 3-alkyltetrahydrofuran is used. More preferably. It is particularly preferable to use a copolyether-based long-chain diol having a high degree of polymerization from the viewpoint of obtaining excellent stretch characteristics.

  This polyurethane reacts with a long-chain diol compound, which is a hydroxyl-terminated soft segment precursor, and a molar excess of a diisocyanate compound (capping reaction) to form an initial polymerization intermediate (prepolymer), and this prepolymer is converted into an amine chain. It can be produced by chain extension with an extender and / or a diol chain extender.

  Examples of the diisocyanate compound used in this polyurethane production process include bis- (p-isocyanatophenyl) -methane (hereinafter abbreviated as MDI), tolylene diisocyanate (hereinafter abbreviated as TDI), and bis- (4-isocyanate). (Cyclohexyl) -methane (hereinafter abbreviated as PICM), hexamethylene diisocyanate, 3,3,5-trimethyl-5-methylenecyclohexyl diisocyanate and the like can be used, and MDI is particularly preferable.

  The chain extender is preferably an amine chain extender, and for example, diamines such as ethylenediamine, 1,3-cyclohexanediamine, and 1,4-cyclohexanediamine are used. In this case, a polyurethane urea having a urea bond in addition to the urethane bond is produced. As the amine chain extender, one kind of diamine compound may be used, or a plurality of kinds of diamine compounds may be used.

  A chain terminator is preferably added to the reaction mixture to help control the final molecular weight in the polymerization process for polyurethane production. As the chain terminator, a monofunctional compound having active hydrogen, such as diethylamine, can be usually used.

  Moreover, as a chain extender, a diol compound can also be used in addition to the amine chain extender described above. For example, ethylene glycol, 1,3-propanediol, 4-butanediol, neopentyl glycol, 1,2-propylene glycol, 1,4-cyclohexanedimethanol, 1,4-cyclohexanediol, 1,4-bis (β -Hydroxyethoxy) benzene, bis (β-hydroxyethyl) terephthalate, paraxylylene diol, and the like can be used. As the diol chain extender, one kind of diol compound may be used, or a plurality of kinds of diol compounds may be used. Moreover, you may use together with the compound containing one hydroxyl group which reacts with an isocyanate group.

  Various methods such as a melt polymerization method and a solution polymerization method can be adopted as the polymerization method for producing the polyurethane. In addition to the prepolymer method described above, a one-stage polymerization method in which a polyurethane is synthesized by simultaneously reacting a long-chain diol, a diisocyanate compound, and a chain extender can be employed.

  In the polyurethane production process by the solution polymerization method, N, N-dimethylacetamide (hereinafter abbreviated as DMAc), dimethylformamide, dimethylsulfoxide, N-methylpyrrolidone and the like can be used as the solvent. Of these, DMAc is most commonly used.

  As a spinning method for producing a polyurethane elastic yarn from polyurethane, for example, in the case of a polyurethane elastic yarn using a diol compound as a chain extender, a melt spinning method, a dry spinning method or a wet spinning method can be employed. In the case of a polyurethane elastic yarn using a diamine compound as a chain extender, it is usually preferable to employ a dry spinning method.

  When a polyurethane elastic yarn is produced from a polyurethane solution produced by polymerization by solution spinning such as dry spinning or wet spinning, the concentration of the polyurethane solution used for spinning is not particularly limited, but is usually 30 to 40% by weight ( (Based on the total weight of the solution), and in the case of the dry spinning method, 35 to 38% by weight is particularly preferable.

  In the polyurethane spinning process, some of the methyl groups of dimethylsilicone and dimethylsilicone are replaced with other alkyl groups and phenyl groups for the purpose of reducing friction between the yarn and the guide of the spinning machine and preventing static charges. It is preferable to apply a silicone oil such as modified silicone substituted with an amino group or the like, or an oil agent such as mineral oil to the yarn, but these oil agents may not be applied. The cross-sectional shape of the obtained elastic yarn may be circular or flat.

  As the stretch yarn used in the present invention, in addition to the polyurethane elastic fiber, a composite fiber having stretch properties can be used. For example, a polyester composite fiber in which a layer mainly composed of polyethylene terephthalate and a layer mainly composed of polytrimethylene terephthalate are combined in a side-by-side type or an eccentric sheath / core type can be used.

  This polyester-based composite fiber is a fiber in which different polymers having different intrinsic viscosities are bonded or eccentric composite, and stress is concentrated on the high-viscosity side during spinning and drawing, and the internal strain between the two layers is different. Become. Therefore, due to the difference in elastic recovery rate after stretching, and due to the difference in thermal shrinkage in the heat treatment process of the fabric, the high-viscosity side is greatly shrunk, and distortion occurs in the single fiber, so that a form of three-dimensional coil crimp is developed. The diameter of the three-dimensional coil crimp and the number of coils per unit fiber length are almost determined by the shrinkage difference (including the elastic recovery rate difference) between the high shrinkage component and the low shrinkage component, and the larger the shrinkage difference, the smaller the coil diameter. The number of coils per unit fiber length increases.

  Coil crimps required for stretch yarns have a small coil diameter, a large number of coils per unit fiber length (excellent stretch characteristics and good appearance), and good coil sag resistance ( The amount of sag of the corresponding coil is small and the stretch retention is excellent. Since the expansion and contraction characteristics of the coil depend on the expansion and contraction of the high contraction component with the low contraction component as a fulcrum, the polymer used for the high contraction component is required to have high extensibility and recoverability. From this viewpoint, it is preferable to use polyethylene terephthalate as the low shrinkage component and polytrimethylene terephthalate as the high shrinkage component. This is because polytrimethylene terephthalate is extremely superior in stretchability and stretch recovery than polyethylene terephthalate because of its polymer structure.

  The polyethylene terephthalate constituting one layer of the polyester-based composite fiber is a polymer having ethylene terephthalate units as main repeating units, that is, a polyester having terephthalic acid as a main acid component and ethylene glycol as a main glycol component. However, it may be a copolyester containing a copolymer component capable of forming another ester bond in a proportion of 20 mol% or less, preferably 10 mol% or less. Examples of the copolymerizable compound include sulfonic acid, sodium sulfonic acid, sulfuric acid, sulfuric ester, diethyl sulfate, ethyl sulfate, aliphatic sulfonic acid, ethane sulfonic acid, chlorobenzene sulfonic acid, alicyclic sulfonic acid, isophthalic acid, sebacic acid Dicarboxylic acids such as azelaic acid, dimer acid, adipic acid, oxalic acid, decanedicarboxylic acid, dicarboxylic acids such as p-hydroxybenzoic acid, ε-caprolactone, triethylene glycol, polyethylene glycol, propanediol, Examples include diols such as butanediol, pentanediol, hydroquinone, and bisphenol A. If necessary, titanium dioxide as a matting agent, fine particles of silica or alumina as a lubricant, hindered phenol derivatives as an antioxidant, and coloring pigments may be added.

  Further, polytrimethylene terephthalate constituting the other layer of the polyester-based composite fiber is a polymer having trimethylene terephthalate units as main repeating units, that is, terephthalic acid as a main acid component, and 1,3-propanediol is used as a polymer. It is a polyester used as the main glycol component. However, it may be a copolyester containing a copolymer component capable of forming another ester bond in a proportion of 20 mol% or less, preferably 10 mol% or less. Examples of the copolymerizable compound include dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, 5-sodium sulfoisophthalic acid, ethylene glycol, diethylene glycol, butanediol, neopentyl glycol, Diols such as cyclohexanedimethanol, polyethylene glycol and polypropylene glycol are preferably used. If necessary, titanium dioxide as a matting agent, fine particles of silica or alumina as a lubricant, hindered phenol derivatives as an antioxidant, and coloring pigments may be added.

  From the viewpoint of increasing the expression of coiled crimps in the polyester-based composite fiber and the stretchability of the knitted fabric to a desired level, the intrinsic viscosity of polytrimethylene terephthalate is preferably 1.0 or more. .2 or more is more preferable.

  The composite structure of the polyester-based composite fiber is a side-by-side type or an eccentric sheath / core type, and the cross-sectional shape of the single yarn may be a substantially circular shape or may be an oval shape with a constricted center. By taking these composite structures, coiled crimps can be expressed by applying heat to the yarn, and the yarn can be given stretchability.

  In addition, the weight ratio of the polyethylene terephthalate layer to the polytrimethylene terephthalate layer in the polyester-based composite fiber is in the range of 30/70 or more and 70/30 or less from the viewpoint of yarn production and dimensional uniformity of the coil in the fiber length direction. Preferably there is.

  The stretch yarn in which the polyurethane elastic yarn described above is used preferably has a yarn fineness of 15 to 156 dtex.

  Next, the non-stretchable yarn used in the present invention will be described.

  The non-stretchable yarn used in the stretchable knitted fabric of the present invention is a yarn having substantially no stretchability, and may be either a filament yarn or a spun yarn.

  Specifically, as filament yarn, rayon, acetate, polyamide, polyester, acrylic, polypropylene, vinyl chloride or the like, or silk (raw yarn) is preferably used. The form may be any of a raw yarn, a temporary twisted yarn, a pre-dyed yarn, or the like, or a composite yarn thereof. These filament yarns are all preferably stable yarns that are easy to twist.

  In addition, the spun yarn includes spun yarn made of natural fibers such as cotton, wool, hemp, silk, etc., staple fibers made of rayon, polyamide, polyester, acrylonitrile, polypropylene, vinyl chloride, or the like, or staples thereof. Examples thereof include spun yarn in which fibers are mixed.

  When the non-stretchable yarn is a filament yarn, the yarn fineness is preferably in the range of 22 to 100 dtex, and more preferably in the range of 22 to 55 dtex.

  The stretchable knitted fabric of the present invention is a warp knitted fabric knitted from stretchable yarns and non-stretchable yarns. In this warp knitted fabric, the non-stretchable yarn may be one type or a plurality of types of knitting. Similarly, the stretch yarn may be one type or a plurality of types of knitting.

  In this stretch warp knitted fabric, there is a mesh portion formed by non-stretchable yarn, that is, the non-stretchable yarn knitting a ground structure (mesh knitted fabric texture) having a mesh portion. As long as the mesh portion has a warp length of 3 to 10 courses, a specific knitted structure is not particularly limited, and the mesh portion may be formed by a normal method. When the warp direction length of the mesh part is too short, the mesh part is too small, and the desired air permeability cannot be exhibited even when the knitted fabric is stretched to open the mesh part. In addition, if the warp direction length of the mesh part is too long, the mesh part is too large, it is difficult to make the mesh part sufficiently closed in a non-tensioned state, and the desired heat retaining property cannot be exhibited. When is open, there is a risk that the sinker loop of the stretchable yarn that traverses the inside of the mesh is easily cut and the burst strength of the fabric itself is insufficient.

  This mesh part is preferably a slit-like mesh part extending in a slit shape in the warp direction (for example, a mesh part formed with the ground texture of FIGS. 1 and 2). Note that a mesh portion having a width such as a turtle shell mesh portion in the case of net knitting is not preferable because it is difficult to be in a sufficiently closed state in a non-tensioned state, but is mixed within a range that does not hinder the object of the present invention. It may be.

  In the elastic warp knitted fabric of the present invention, the sinker loop of the elastic yarn crosses the mesh portion in the horizontal direction. When it is spread and placed on a flat plate in a substantially non-existent state, it is preferably present at a frequency of 20 to 90 in a 2.54 cm square range of the warp knitted fabric. If the frequency of the mesh portion is too small, inconvenience is likely to occur in air permeability. On the other hand, if the amount is too large, inconvenience is likely to occur in the heat retention, and there is a risk that the rupture strength of the fabric itself is insufficient.

  In the elastic warp knitted fabric of the present invention, the elastic yarn is knitted by a knitting method for forming a needle loop, and the sinker loop formed from the needle loop to the needle loop of the next course crosses the mesh portion in the horizontal direction. Is woven. The needle loop in this case is preferably a closed loop from the viewpoint of preventing stretch yarn slippage in the knitted fabric, but may be an open loop. Further, the width of the horizontal swing of the sinker loop is not particularly limited as long as it can cross the mesh portion, but generally the horizontal swing of 2 to 5 needles is preferable. If this width is too small, it is difficult to close the mesh portion. On the other hand, if it is too large, the productivity of the knitting machine is lowered, which is not preferable.

  In addition, if the elastic yarn is arranged so as to cross the mesh portion in the horizontal direction, it can be knitted as an insertion yarn that does not form a needle loop. In this case, the portion that crosses the horizontal direction becomes the sinker loop. It will be equivalent. However, in this case, there is a demerit that the elastic yarn easily slips in the knitted fabric.

  The number of elastic yarn sinker loops that cross the mesh portion is generally 2-8 sinker loops per mesh portion, although it depends on the size of the mesh portion, the fineness of the elastic yarn, and the elastic properties. It is preferable to organize so that Further, when the number of warp length courses of the mesh part traversed by the sinker loop is A and the number of traverse yarns traversing the mesh part is B, the ratio (B / A) is 0.2-4. A range of 0 is preferable for the opening / closing function of the mesh portion. In order to make the mesh part sufficiently closed in the non-tensioned state, it is necessary to set the number of crossing sinker loops to 2 or more, and the ratio (B / A) is set to 0.2 or more. It is preferable. Further, in order to make the mesh part open sufficiently when stretched, the number of crossing sinker loops must be 8 or less, and the ratio (B / A) should be 4.0 or less. Is preferred.

  The elastic warp knitted fabric of the present invention can be cut and sewed by a conventional method to produce sportswear such as active wear and leotard. Similarly, innerwear such as lingerie and foundation can be manufactured.

  The stretch warp knitted fabric of the present invention is a fabric with closed eyes in an unstrained state and is excellent in heat retention, but when it is pulled in a horizontal direction or an oblique direction to be in a tensioned state, it becomes a fabric with an open mesh portion and exhibits air permeability. . Therefore, the garment comprising the main part of the stretch warp knitted fabric of the present invention exhibits excellent heat retention or air permeability depending on the situation, and while maintaining the same garment, the heat retention and ventilation It is possible to demonstrate the characteristics, and the wearing comfort as sportswear and innerwear can be further improved.

Hereinafter, the present invention will be described in more detail with reference to examples.
[Example 1]
A warp knitted fabric was manufactured by using the following yarn using a 28 gauge machine of KARL MAYER tricot knitting machine type HKS-3.
Front ridge (L3): Nylon 6 thread (78 dtex 24 filament) (Type 2V92 manufactured by Toray Industries, Inc.)
Middle heel (L2): Same yarn as front yarn (L3) Back heel (L1): Elastic polyurethane yarn (50 dtex) ("Lycra" (registered trademark) type 906C manufactured by Operontex Co., Ltd.)

As for how to pass the thread to each kite, the front kite (L3) is 3 in 1 out, the middle kite (L2) is also 3 in 1 out, the back kite (L1) is 2 in 2 out, and the front kite (L3) A mesh structure was formed by the nylon yarn and the nylon yarn of the middle heel (L2), and the sinker loop of the polyurethane elastic yarn of the back heel (L1) crossed the mesh portion. The specific knitting organization is as follows <knitting organization>, and the organization chart is shown in FIG.
<Organization>
L3 (non-stretchable yarn): 3-4 / 3-2 / 3-4 / 3-2 / 3-4 / 3-2 / 2-1 / 1-0 / 1-2 / 1-0 / 1-2 / 1-0 / 1-2 / 2-3 //
L2 (non-stretchable yarn): 1-0 / 1-2 / 1-0 / 1-2 / 1-0 / 1-2 / 2-3 / 3-4 / 3-2 / 3-4 / 3-2 / 3-4 / 3-2 / 2-1 //
L1 (elastic thread): 4-5 / 1-0 //

The raw machine of the warp knitted fabric obtained by knitting was processed in the order of relaxation treatment, dehydration pre-set, dyeing, and finishing set in the usual manner to obtain a dye warp knitted fabric.
The obtained dyed warp knitted fabric has good stretchability in both the vertical direction and the horizontal direction, and the density of the mesh portion is slightly different between the ear end portion and the central portion of the fabric, but within a 2.54 cm square range. There were 68 to 71 pieces. The length of the mesh portion in the warp direction was 7 courses, and the number of stretcher sinker loops traversing the mesh portion in the wale direction was 12.

  When this stretchable knitted fabric was spread and placed on a flat plate in a non-tensioned state, the mesh portion was in a closed state, similar to a warp knitted fabric without a mesh portion, and excellent in heat retention. Moreover, when it was made the state pulled in the horizontal direction, the mesh part became an open mesh warp knitted fabric and was excellent in air permeability.

[Comparative Example 1]
Using a 56 gauge machine of Raschel knitting machine type RSE4N manufactured by KARL MAYER as a warp knitting machine, a warp knitted fabric was manufactured using the following yarns.
First ridge (L1): Nylon 66 yarn (44 dtex, bright deformed type) (manufactured by Toray Industries, Inc.)
Second thread (L2): Same thread as first thread (L1) Third thread (L3): Polyurethane elastic thread (310 dtex) ("Lycra" (registered trademark) type 127C manufactured by Operontex Co., Ltd.)
Fourth thread (L4): Same thread as third thread (L3)

The way of passing the thread to each heel is 1 in 1 out for all of the first heel (L1), the second heel (L2), the third heel (L3), and the fourth heel (L4). A power net was knitted as a type of stretch warp knitted fabric. The specific knitting organization is as follows <knitting organization>, and the organization chart is shown in FIG.
<Organization>
L1 (non-stretchable yarn): 4-6 / 4-2 / 2-4 / 2-0 / 2-4 / 4-2 //
L2 (non-stretchable yarn): 2-0 / 2-4 / 4-2 / 4-6 / 4-2 / 2-4 //
L3 (elastic thread): 0-0 / 2-2 //
L4 (elastic thread): 2-2 / 0-0 //

The raw machine of the warp knitted fabric obtained by knitting was processed in the order of relaxation treatment, dehydration pre-set, dyeing and finishing set in the same manner as in Example 1 to obtain a dyed warp knitted fabric.
The obtained dyed warp knitted fabric has good stretchability in both the warp direction and the width direction, and a mesh part having a length of 5 courses in the warp direction is formed, but the stretch yarn crossing this mesh part is Since it does not exist, it was a mesh warp knitted fabric in which the mesh portion was open even in a non-tensioned state or a pulled state. Accordingly, the air permeability is always excellent and the heat retaining property is inferior.

[Comparative Example 2]
Using a 56 gauge machine of Raschel knitting machine type RSE4N manufactured by KARL MAYER as a warp knitting machine, a warp knitted fabric was manufactured using the following yarns.
First ridge (L1): Nylon 66 yarn (44 dtex, bright deformed type) (manufactured by Toray Industries, Inc.)
Second ridge (L2): polyurethane elastic yarn (310 dtex) (“Lycra” (registered trademark) type 127C manufactured by Operontex Co., Ltd.)

The way of passing the yarn to each heel was a full set, and a 6-course satin net was knitted as a general satin type stretch warp knitted fabric. The specific knitting organization is as follows <knitting organization>, and the organization chart is shown in FIG.
<Organization>
L1 (non-stretchable yarn): 2-0 / 2-0 / 2-0 / 2-4 / 2-4 / 2-4 //
L2 (elastic thread): 0-0 / 4-4 / 2-2 / 6-6 / 2-2 / 4-4 //

The raw machine of the warp knitted fabric obtained by knitting was processed in the order of relaxation treatment, dehydration pre-set, dyeing and finishing set in the same manner as in Example 1 to obtain a dyed warp knitted fabric.
The obtained dyed warp knitted fabric was a dense satin-like warp knitted fabric having good stretchability in both the warp direction and the horizontal direction, and was excellent in heat retention. However, since the mesh part is not formed at all, even when it is pulled, it does not become mesh-like and the air permeability is always inferior.

  The elastic warp knitted fabric of the present invention, which can be a breathable fabric or a heat retaining fabric depending on the situation, is suitable as an elastic fabric for producing innerwear, sportswear, etc., and has a breathable property or a heat retaining property depending on the situation. Wearable products can be manufactured.

1 is a knitting structure diagram schematically showing a knitting structure of an elastic warp knitted fabric in Example 1. FIG. 3 is a knitting structure diagram schematically showing a knitting structure of a stretch warp knitted fabric in Comparative Example 1. FIG. FIG. 6 is a knitting structure diagram schematically showing a knitting structure of a stretch warp knitted fabric in Comparative Example 2.

Explanation of symbols

1: Inelastic thread 2: Elastic thread

Claims (8)

A stretch warp knitted fabric knitted from stretch yarn and non-stretch yarn, and there is a mesh portion formed by the non-stretch yarn, and the sinker loop of the stretch yarn crosses in the horizontal direction in the mesh portion, A stretch warp knitted fabric characterized in that the length in the length direction is 3 to 10 courses and the number of sinker loops crossing the mesh portion is 2 to 12 per mesh portion. The stretch warp knitted fabric according to claim 1, wherein 20 to 90 mesh portions crossing the sinker loop exist within a 2.54 cm square range of the warp knitted fabric in an unstrained state. The ratio (B / A) of the number of crossings (B) of the elastic yarn crossing the mesh part to the number of courses (A) of the length in the length direction of the mesh part crossing the sinker loop is in the range of 0.2 to 4.0. The elastic warp knitted fabric according to claim 1 or 2, wherein the elastic warp knitted fabric is provided. The stretchability according to any one of claims 1 to 3, wherein the mesh portion is in a closed state in a non-tensioned warp knitted fabric, and the mesh portion is in an open state in a stretched state in a transverse direction. Warp knitted fabric. The stretch warp knitted fabric according to any one of claims 1 to 4, wherein the stretch yarn is a polyurethane elastic yarn of 15 to 156 dtex. 6. The stretchable yarn according to claim 5, wherein the polyurethane elastic yarn is an elastic yarn composed of a polyurethane elastomer polymerized using a copolyether diol of tetrahydrofuran and 3-alkyltetrahydrofuran as a polymer diol component. Warp knitted fabric. A sportswear comprising the stretch warp knitted fabric according to any one of claims 1 to 6. An innerwear, wherein the stretchable knitted fabric according to any one of claims 1 to 6 is used.

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