JP2011069013A - Woven or knitted fabric using nylon 11 yarn and method for dyeing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a woven or knitted fabric having excellent light resistance, heat resistance, strength and color development and contributes to promotion of environmental protection and to provide a new use using the woven or knitted fabric as a technical subject. <P>SOLUTION: The woven or knitted fabric uses a nylon 11 yarn and is dyed. The strength of the nylon 11 yarn is ≥3.0 cN/dtex and the woven or knitted fabric has an L* value of ≤50. Preferably the nylon 11 yarn has a strength retention after wet heat treatment at 130°C for 30 minutes of ≥80%. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a woven or knitted fabric using nylon 11 yarn, and in particular, relates to a woven or knitted fabric excellent in color developability, various fiber products using them, and a method for dyeing a woven or knitted fabric at a high temperature. is there.

  A woven or knitted fabric made of nylon yarn (nylon woven or knitted fabric) is generally excellent in flexibility and dyeability, and is widely used as a general-purpose material not only in the clothing field but also in the industrial material field.

  However, nylon woven and knitted fabrics generally have a problem that the dimensions change greatly when wet, that is, the dimensional stability is poor.

  In order to solve such a problem, for example, Patent Document 1 proposes a technique for improving the dimensional stability of a nylon 6 fabric. Specifically, one of the warp and the weft is made of nylon 6 fiber (nylon 6 yarn), and the other is made of a yarn that swells in the radial direction to absorb the elongation of the yarn. As a result, it has been disclosed that the dimensional change when wet is suppressed.

  Furthermore, nylon woven and knitted fabrics also have a problem in that when they are exposed to ultraviolet rays for a long time, the yarns deteriorate and the strength of the woven or knitted fabric decreases.

  Therefore, in Patent Document 2, N, N′-bis (2,2,6,6-tetramethyl-4-piperidyl) isophthalamide and / or N, N′-bis (2,2) are used as additives. , 6,6-tetramethyl-4-piperidyl) terephthalamide has been proposed to contain polyamide fibers.

  Patent Document 3 discloses a modified nylon polymer that polymerizes a polyamide-forming monomer in the presence of a chain-controlling compound containing a sterically hindered piperidine compound and an aliphatic dicarboxylic acid, and exhibits stability to light and heat. The manufacturing method of this is proposed.

  On the other hand, the coloring property of the mixed woven or knitted fabric of nylon yarn and other yarn has also been studied.

  For example, when dyeing a mixed knitted fabric of nylon yarn and polyester yarn, if the yarn is dyed at 90 to 100 ° C. under normal pressure suitable for nylon woven fabric, the polyester yarn cannot be dyed sufficiently. The desired color developability cannot be obtained as a knitted fabric. On the other hand, when dyeing is performed at around 130 ° C. under a high pressure suitable for polyester woven or knitted fabric, there is a problem that the nylon yarn is deteriorated by heat and the strength and durability of the woven or knitted fabric are lowered.

  For this problem, a method of using a carrier agent at the time of dyeing a woven or knitted fabric has been proposed. However, many carrier agents are harmful to the human body and the environment, and it is said that there is a problem in terms of environmental pollution associated with waste liquid treatment.

  Although a method of dyeing at 100 ° C. or more and less than 120 ° C. has been studied, although the dyeability of the polyester yarn is improved, it is not sufficient, and deterioration of the nylon yarn due to heat cannot be prevented.

  Therefore, a method of applying a polyester yarn capable of normal pressure dyeing has been proposed. For example, Patent Document 4 proposes a technique using an atmospheric pressure cationic dyeable polyester yarn made of a copolyester containing a specific amount of a metal salt of 5-sulfoisophthalic acid in an acid component.

JP-A-7-331552 JP 2000-239924 A Special table 2002-506102 gazette Japanese Patent No. 25888858

  According to the technique described in the above cited reference 1, it is possible to suppress dimensional changes when wet. However, in order to achieve the purpose, not only the properties such as flexibility and dyeability that nylon knitted fabrics generally have are reduced, but the texture is lowered due to the increase in the thickness of the fabric, and the feeling of stuffiness is also reduced. There is a problem that increases.

  The technique described in the cited document 2 aims at improving the light resistance of the so-called woven or knitted fabric by maintaining the strength of the woven or knitted fabric by suppressing the deterioration of the fiber due to ultraviolet irradiation. According to this technique, a certain effect is certainly recognized in improving the light resistance. However, even if this fiber is used, there is a problem that not only the dimensional change of the woven or knitted fabric can be suppressed, but the addition of such an additive causes the strength of the fiber to be lowered and the physical properties of the yarn are greatly impaired.

  Furthermore, according to the technique described in the cited document 3, the light resistance and heat resistance of the nylon polymer can be improved.

  However, in recent years, there has been a concern about the decrease in fossil resources, and at the same time, carbon dioxide generated from the use of fossil resources has been the cause of global warming. It has been. Therefore, there is an approach that uses the idea of carbon neutral, and among them, there is great expectation for the utilization of plant-derived resources that do not use fossil resources.

  From this point of view, the technology is not considered at all in terms of resources and the environment, as is apparent from the fact that the technology mainly targets nylon 6.

  Moreover, in the technique in the cited document 4, a nylon thread made of nylon 11 fiber or nylon 12 fiber (hereinafter, sometimes referred to as nylon 11 thread or nylon 12 thread) is used as the nylon thread that is the counterpart of the polyester thread. Has been. In particular, since nylon 11 fibers are mainly made of plant-derived components as described later, it is recognized that resources and the environment are considered in this technology.

  On the other hand, this technique is aimed at improving the dyeability under normal pressure dyeing, and is mainly aimed at achieving the Chambray effect by separating two colors. However, in ordinary pressure dyeing, it is generally difficult to improve color developability, and it is difficult to dye a woven or knitted fabric deeply. In the technique in the cited document 4, it is not recognized that the improvement of the color developability is considered based on the characteristics, dyeing means, conditions, etc. of the fiber material employed, and as a result, the use of the resulting woven or knitted fabric is very It is limited and further improvement is required.

  From the above, nylon knitted fabric with excellent dimensional stability when wet while maintaining universal properties such as flexibility and dyeability, as well as nylon with excellent light resistance, heat resistance and strength. Weaving and knitting has not been proposed yet, and it has not been tested or researched, especially for knitting and knitting that is made of fibers mainly composed of plant-derived components and has good color development and can be used for many purposes. It is a fact.

  The present invention solves these problems, and provides a woven or knitted fabric that is excellent in light resistance, heat resistance, strength, and color developability, and further contributes to the promotion of environmental protection. Proposing new applications is a technical challenge.

The gist of the present invention is as follows. That is,
(1) A dyed woven or knitted fabric using nylon 11 yarn, wherein the nylon 11 yarn has a strength of 3.0 cN / dtex or more, and the L * value of the woven or knitted fabric is 50 or less. Characteristic woven or knitted fabric.
(2) The woven or knitted fabric according to 1 above, wherein the nylon 11 yarn has a strength retention after wet heat treatment at 130 ° C. for 30 minutes at a stage to be subjected to weaving and knitting at 80% or more.
(3) The woven or knitted fabric according to 1 or 2 above, comprising a polyester yarn.
(4) Outer wear using the woven or knitted fabric according to any one of the above 1 to 3.
(5) A kneaded fabric using the woven or knitted fabric according to any one of 1 to 3 above.
(6) An umbrella made using the woven or knitted fabric according to any one of 1 to 3 above.
(7) A dyeing method characterized by dyeing a woven or knitted fabric using nylon 11 yarns at 120 to 140 ° C.

  The woven or knitted fabric of the present invention can solve various drawbacks in the physical properties of nylon woven and knitted fabrics, which have been regarded as problems in the past. In particular, in the present invention, since nylon 11 yarn is used, it greatly contributes to the promotion of environmental protection, and high-temperature dyeing is possible. For example, even when polyester yarn is used in combination, it is excellent. Color development can be exhibited. From these points, by using the woven or knitted fabric of the present invention, it is possible to actively develop applications in fields where it has been difficult to apply the conventional nylon woven or knitted fabric.

  Hereinafter, the present invention will be described in detail.

  The woven or knitted fabric of the present invention is made of nylon 11 yarn. Nylon 11 yarn is composed of nylon 11 fiber, and the form of the fiber is not particularly limited, but a filament-like one is usually used. Further, the form of the nylon 11 yarn itself is not particularly limited, and can be used in any state such as a flat yarn and a processed yarn.

  Nylon 11 fiber is composed of a polymer mainly composed of a nylon 11 polymer. Nylon 11 polymer refers to a polymer that is polycondensed with 11 aminoundecanoic acid as the main monomer. Since 11 aminoundecanoic acid is produced based on castor oil extracted from castor (castor bean) seeds, it can be said that nylon 11 obtained is a polymer mainly composed of plant-derived components. Therefore, if nylon 11 yarn is used, a woven or knitted fabric in consideration of resources and the environment can be obtained.

  Nylon 11 fibers are smaller in density and lighter than nylon 6 fibers and 66 fibers, and are excellent in wear resistance, chemical resistance, flex fatigue resistance, and the like.

  Nylon 11 may contain other polyamide-forming monomers such as ε-caprolactam and hexamethylene diammonium adipate as a copolymer component as long as the effects of the present invention are not impaired. In addition, for example, nylon 11 may be blended with other nylon polymers such as nylon 6, nylon 66, nylon 12, and nylon 46 to form a fiber. However, the blend amount of the polymer is preferably 30% by mass or less in consideration of resources and environment in addition to fiber strength.

  In addition, plasticizers, flame retardants, matting agents, inorganic fillers, reinforcing agents, heat-resistant agents, antibacterial agents, deodorants, flameproofing agents, UV stabilizers, antioxidants, and coloring agents in polymers as necessary Various additives such as pigments may be contained. In particular, when the nylon 11 contains a heat-resistant agent, when spinning the fiber, the spinning temperature can be lowered, and at the same time, an increase in viscosity can be suppressed, and as a result, the amount of monomer precipitated during spinning. Can be reduced. As a result, yarn breakage during spinning can be reduced and spinning can be performed with good spinning operability. And in the subsequent drawing process, it becomes possible to supply undrawn yarn having excellent performance.

  As the heat-resistant agent that can be used, several materials can be mentioned. In the present invention, it is particularly preferable to use a hindered phenol-based antioxidant. Specifically, “IRGANOX (trade name)” manufactured by Ciba Japan Co., Ltd. may be mentioned as a hindered phenol-based antioxidant.

  Further, it is preferable to use a phosphorus processing heat stabilizer in combination as a heat-resistant agent. Specifically, “IRGAFOS (trade name)” manufactured by Ciba Japan Co., Ltd. can be used as a phosphorus processing heat stabilizer.

  In using such a heat-resistant agent, the fiber preferably contains 0.1 to 1.0% by mass, more preferably 0.2 to 0.8% by mass, and still more preferably 0.2 to 0.6% by mass. Like that. When the content of the heat-resistant agent in the fiber is less than 0.1% by mass, the effect of improving the spinning operability described above tends to be poor. On the other hand, when the content exceeds 1.0% by mass, the effect is only saturated. In some cases, yarn may break during spinning, which is not preferable.

  The strength of the knitted or knitted fabric is preferably one that can sufficiently withstand actual use not only in clothing but also in materials. In order to achieve such strength, a nylon 11 yarn constituting the woven or knitted fabric after dyeing that is finally obtained may be used having a predetermined strength and elongation. Specifically, the strength of the nylon 11 yarn is preferably 3.0 cN / dtex or more, and more preferably 4.0 cN / dtex or more. On the other hand, the elongation (elongation) is preferably 20 to 140%, and more preferably 25 to 80%.

  Further, the woven or knitted fabric of the present invention needs to be dyed from the viewpoint of increasing the commercial value and widening the range of uses, and particularly needs to be excellent in terms of color developability. From this point, in the present invention, it is necessary that the L * value is 50 or less as an index of color developability.

  When a woven or knitted fabric is dyed deeply, generally the L * value tends to be small. However, this assumes that the same dye is used. For example, if the hue of the dye changes, the L * value may fluctuate even if the amount of dye used is the same.

  Here, when L * value preferable for every hue is illustrated, in the case of blue, 40 or less is preferable and 35 or less is more preferable. In the case of red and green, both are preferably 50 or less, and more preferably 45 or less. In the case of black, 25 or less is preferable, and 20 or less is more preferable.

  In the present invention, the L * value needs to satisfy 50 or less for any hue. If the L * value exceeds 50, the hue of the woven or knitted fabric may appear light, which is not preferable.

  The L * value in the present invention is a value obtained by measuring the reflectance using a Macbeth MS-2020 spectrophotometer and obtaining a density index from the color difference formula of CIE Lab.

  Needless to say, in the knitted or knitted fabric of the present invention, it is preferable that various problems common to general nylon woven or knitted fabrics are also improved.

  In this respect, it is preferable that the dimensional stability when wet is excellent. Specifically, in the case of a woven fabric, the dimensional change rate when wet measured under a standard state (20 ± 2 ° C., 65 ± 2% RH) is 1.5% or less, and in the case of a knitted fabric, the standard state It is preferable that the dimensional change rate when wet measured below is 3.5% or less.

  In the present invention, the dimensional change rate when wet, specifically measured under standard conditions, is calculated as follows.

  First, for both woven and knitted fabrics, a sample with a width direction of 3 cm and a length direction of 30 cm is used as a sample for measurement in the warp direction, and a sample with a width direction of 30 cm and a length direction of 3 cm is used as a sample for measurement in the weft direction. prepare. After each sample is left in a room adjusted to the standard state for 24 hours, the number of yarns corresponding to the longitudinal direction of the sample (for example, when measuring the warp direction or weft direction of the fabric, In the case of knitted fabrics, the number of courses or wales per 3 cm is counted in the case of a knitted fabric, and then the sample is suspended in the longitudinal direction and the load is The number of yarns counted] × [total fineness of the yarn (dtex)] × [1/30] gf is applied. After being left for 1 minute, a mark with a mark length of 25 cm is attached to the approximate center of the sample, and this is designated as PAS.

  Next, remove the load from the sample, immerse it in a water bath for 1 minute, leave it on the filter paper for 5 seconds, lightly drain it, apply the above load again, leave it for 1 minute, Measure and set this as PAW.

  Then, the dimensional change rate (%) is calculated by substituting PAS and PAW into the equation: dimensional change rate PA (%) = | PAS−PAW | / PAS × 100.

  In the present invention, in the case of a woven fabric, the dimensional change rate when wet measured under a standard condition is preferably 1.5% or less in the weft direction, particularly preferably 1.0% or less, % Or less is more preferable. On the other hand, in the case of a knitted fabric, the dimensional change rate is preferably 3.5% or less in the weft direction, particularly preferably 3.0% or less, and more preferably 2.5% or less. If the dimensional stability of the woven or knitted fabric is out of the range shown here, the woven or knitted fabric may undergo a large dimensional change when wetted, and various textiles using the woven or knitted fabric may lose shape or wrinkle.

  In the present invention, it is possible to keep the dimensional change rate of the woven or knitted fabric within a desired range by keeping the moisture content of the yarn low, and the moisture content is 2 as the moisture content of the yarn under standard conditions. 0.0% or less is preferable, and 1.0% or less is more preferable.

  Although the detailed principle is still unclear about the point that the woven or knitted fabric of the present invention has a preferable dimensional change rate, the present inventors have found that when the moisture content of the yarn is low, the moisture content is between the standard state and the wet state. It is speculated that this difference has a certain effect on the dimensional change of the woven or knitted fabric.

  Furthermore, in the present invention, it is also preferable that the light resistance is excellent. The light resistance referred to in the present invention refers to the property that the strength of the woven or knitted fabric is maintained even if the woven or knitted fabric is irradiated with ultraviolet rays for a long time. The woven or knitted fabric can be preferably applied.

  The woven or knitted fabric is composed of yarns. If we rephrase the characteristic that the light resistance of the woven or knitted fabric is good from the viewpoint of the yarn, the yarns in the woven or knitted fabric are It can be said that it does not easily deteriorate even when irradiated with ultraviolet rays for a long time. As an indicator of this, in the present invention, the nylon 11 yarn constituting the woven or knitted fabric when the woven or knitted fabric is exposed according to JIS L0842 third exposure method with a black panel temperature of 63 ° C. ± 3 ° C. and the intended blue scale as grade 5. It is preferable that the strength retention after exposure of the stripes before exposure is 80% or more. In particular, in addition to this, when the target blue scale is exposed as a sixth grade instead of the fifth grade, the nylon 11 yarn also has a strength retention after exposure to 70% or more before exposure. preferable.

  In the nylon 11 yarn, it is possible to make the strength retention ratio for light resistance within a predetermined range by adding an antioxidant, a processing heat stabilizer or the like in the fiber. Examples of the antioxidant include hindered phenol-based antioxidants and hindered amine-based antioxidants, and examples of the processing heat stabilizer include phosphorus-based processing heat stabilizers. In the present invention, these are used singly or in combination, but both an antioxidant and a processing heat stabilizer are preferably used in combination from the viewpoint of spinnability as described later.

  As described above, the woven or knitted fabric of the present invention is formed by using nylon 11 yarns. Basically, the woven or knitted fabric is preferably composed only of nylon 11 yarns, but the effect of the invention is not impaired. If so, there is no problem even if fibers other than nylon 11 fibers are used.

  Examples of fibers other than nylon 11 fibers include various natural fibers, recycled fibers, and synthetic fibers. When fibers other than nylon 11 fibers are used, the nylon 11 fibers and other fibers may be combined into a single thread, and a woven or knitted fabric may be formed from this thread. It is preferable to knit and weave yarns made of the other fibers.

  In the present invention, polyester fibers are preferably employed as other fibers from the viewpoint of expanding the range of applications. For this reason, when making the woven or knitted fabric of the present invention a mixed woven or knitted fabric, an embodiment comprising nylon 11 yarn and polyester yarn is preferable.

  Examples of the polyester fiber that can be used in the present invention include fibers mainly composed of polyethylene terephthalate (PET), polybutylene terephthalate, polypropylene terephthalate, or polylactic acid. The polymers listed here include heat-resistant agents, antistatic agents, ultraviolet absorbers, flame retardants, antibacterial agents, deodorants, conductivity-imparting agents, matting agents, and pigments as long as the effects of the invention are not impaired. In addition, various additives such as titanium oxide, silicon oxide, and zirconium carbide may be included. In particular, in the case of a fiber containing polylactic acid as a component, when poly L lactic acid or poly D lactic acid is used alone, it is preferable to use a heat-resistant agent from the viewpoint of moisture and heat resistance. It is preferable to use a product obtained by mixing lactic acid into a polylactic acid stereocomplex.

  As described above, the woven or knitted fabric of the present invention needs to be dyed, and particularly preferably has excellent color developability.

  Nylon 6, 66 knitted fabric is generally dyed at 90 to 100 ° C. under normal pressure (normal pressure dyeing). However, the nylon 11 woven or knitted fabric tends to fail to obtain the desired color developability even when dyed under these conditions. Although this principle is not clear, nylon 11 yarn has a lower moisture content than nylon 6 and 66 yarns, so it is inferior in affinity with water, and in addition, the amount of amino end groups in the molecule is small. Is inferred. Accordingly, the present inventors have noted that the moisture content of nylon 11 yarn is low, and based on the idea that a decrease in the strength of the yarn due to hydrolysis is relatively unlikely to occur, nylon 6,66 woven fabrics Then, when nylon 11 woven or knitted fabric was dyed at 120 to 140 ° C. under high pressure, which is not normally performed from the viewpoint of maintaining strength, it was surprisingly possible to improve color development while maintaining the strength of the yarn. Was found.

  Since the melting point of the nylon 11 polymer is 187 ° C., which is significantly lower than that of nylon 6 and 66, it goes without saying that this cannot be easily recalled by those skilled in the art.

  Conventionally, nylon 11 woven and knitted fabrics have not been applied to fields requiring deep dyeing because the desired color developability cannot be obtained by atmospheric dyeing. However, in the process of making the present invention, it has been found that the color developability of the nylon 11 woven fabric can be improved by high-pressure dyeing, and the L * value can be reduced to 50 or less.

  The above facts can also be used when dyeing a mixed woven or knitted fabric of nylon 11 yarn and polyester yarn.

  As mentioned above, nylon 6,66 woven fabric is generally dyed at 90-100 ° C. under normal pressure. For this reason, for example, if a mixed woven or knitted fabric of these nylon yarns and polyester yarns is dyed under conditions suitable for polyester woven or knitted fabrics, the desired physical properties such as a decrease in the strength of the nylon yarns cannot be obtained, and vice versa. In the normal pressure dyeing suitable for nylon 6, 66 woven or knitted fabric, the polyester yarn cannot be sufficiently colored and the entire woven or knitted fabric cannot be dyed deeply. However, when nylon 11 yarns are used in place of these nylon yarns, nylon yarns are practical even if dyeing conditions at 120 to 140 ° C. under high pressure, which is suitable for polyester woven fabrics, are applied. Sufficient strength can be maintained.

  In the case of nylon 6 and 66 yarns, a woven or knitted fabric excellent in dimensional stability tends to be difficult to obtain even when mixed with yarns having excellent dimensional stability such as polyester yarns. This is because when nylon 6 and 66 yarns and polyester yarns are mixed with a woven or knitted fabric, nylon 6 and 66 yarns having a large hot water shrinkage rate preferentially shrink, so that the yarn length of polyester yarns is woven. This is because it becomes relatively long in the knitted fabric. When the load is hung on the woven or knitted fabric in such a state, the load is not supported by the entire woven or knitted fabric but the load is supported only by the nylon 6 and 66 yarns. Therefore, the dimensional change as the woven or knitted fabric is large. It becomes. On the other hand, since the nylon 11 yarn is excellent in dimensional stability, the woven or knitted fabric can maintain the desired dimensional stability even when the load is concentrated on the nylon 11 yarn.

  The nylon 11 woven or knitted fabric can be dyed at 120 to 140 ° C. in this way, and can thereby have a desired color development property. However, in order to sufficiently exhibit such an effect, it is assumed that the nylon 11 yarn has durability against high temperature and high pressure dyeing. From this point, in the present invention, it is preferable to use a nylon 11 yarn having predetermined heat resistance at the stage to be used for weaving and knitting.

  Specifically, the nylon 11 yarn maintains strength after wet heat treatment at 130 ° C. for 30 minutes at the stage to be used for weaving and knitting, that is, immediately before being put into a series of weaving and knitting processes from twisted yarn to weaving and knitting process. The rate is preferably 80% or more, more preferably 82% or more, and particularly preferably 85% or more. If the strength retention is less than 80%, it is not preferable to subject the woven or knitted fabric to high-temperature / high-pressure dyeing or high-temperature processing because the strength tends to decrease.

  In addition, as a method for measuring the strength retention rate, a method suitable for the high temperature and high pressure dyeing embodiment should be adopted as much as possible. From this point, it is better to refine the yarn before subjecting it to the treatment. From the above points, the measurement method is as follows. First, a tubular knitted fabric made of nylon 11 yarn is prepared, and this tubular knitted fabric is scoured at 80 ° C. for 20 minutes, then immersed in a warm bath, and 30 ° C. at 30 ° C. Heat-treat for 1 minute. The equipment used for performing such treatment is not particularly limited, but as an example, a mini color dyeing machine manufactured by Texam Giken can be used. Specifically, the cylindrical knitted fabric is put into a metal pot filled with water, scoured at 80 ° C. for 20 minutes, subsequently wet-heat treated at 130 ° C. for 30 minutes, the knitted fabric is taken out and dried. It is done.

  The strength retention after the wet heat treatment at 130 ° C. for 30 minutes refers to the strength ratio of the yarn after the wet heat treatment with respect to before the wet heat treatment. In general, the wet heat treatment tends to cause a greater change in some physical properties such as the strength and elongation of the yarn than the scouring, so the relationship before and after the wet heat treatment is measured.

  As a measuring method, first, according to a standard time test of tensile strength and elongation described in JIS L1013 8.5.1, using a constant-speed extension type testing machine, with a gripping interval of 20 cm and a pulling speed of 20 cm / min, scouring Measure the yarn strength before post-wet heat treatment. Next, the nylon 11 yarn is taken out from the treated tubular knitted fabric, and the yarn strength is measured by the same method. Then, the strength retention after the wet heat treatment is calculated from the formula of strength retention T (%) = (B / A) × 100 (A: strength after scouring before wet heat treatment, B: strength after wet heat treatment). .

  The nylon 11 yarn in the present invention preferably maintains a strength of 3.0 cN / dtex or more after wet heat treatment at 130 ° C. for 30 minutes, and more preferably maintains 3.8 cN / dtex or more. preferable. If the strength after the wet heat treatment is less than 3.0 cN / dtex, it is inferior in hot water resistance, and it tends to be difficult to carry out the dyeing treatment and various heat treatments at a high temperature.

  Although the woven or knitted fabric of the present invention is constituted as described above, it can be widely used not only in the garment field but also in the industrial material field as the conventionally known nylon woven or knitted fabric.

  According to the present invention, for example, in the field of clothing, outerwear, in the material field, knitted fabrics, umbrellas, etc., to the field where problems remain with respect to moisture such as rain, although it is used in conventional nylon knitted fabrics. Can be applied.

  Further, when the woven or knitted fabric of the present invention is applied to a textile product used outdoors, the opportunity for washing increases. Therefore, the woven or knitted fabric preferably has a predetermined fastness to washing. Specifically, it is preferable that both of them are grade 4 or more as discoloration and contamination in washing fastness, which are measured according to JIS L0844C-2 method. If the fastness to washing satisfies this range, discoloration due to washing or color transfer to other laundry is less likely to occur.

  Next, a method for producing the woven or knitted fabric of the present invention will be described.

  First, a nylon 11 containing a heat-resistant agent such as a hindered phenol antioxidant, preferably 0.1 to 1.0% by mass and having a relative viscosity of preferably 1.6 to 2.4, is prepared. Melt spinning at a spinning temperature of 230 to 270 ° C. Next, after cooling and solidifying the spun yarn, it is taken up by a first roller having a surface temperature of 30 to 80 ° C. at a speed of 3000 m / min or more. Next, the yarn taken up by the first roller is taken up by a second roller having a surface temperature of 100 to 180 ° C., whereby the yarn is drawn at a draw ratio of 1.1 to 2.8 times between the rollers, and the winding speed is 3400 to 5000 m / Wind the nylon 11 thread in minutes. In addition, various additives may be contained in the fiber, and various fiber mixing treatments may be employed as needed during the process.

  Thereafter, the obtained nylon 11 yarn is woven alone, or is woven or knitted with other yarns as necessary to obtain a living machine. In this case, the optimum machine may be selected in consideration of the texture and physical properties of the finally obtained woven or knitted fabric.

  After obtaining the raw machine, the desired woven or knitted fabric is obtained by dyeing. Specifically, first, the raw machine is scoured and preset as necessary, and then high-pressure dyeing is preferably performed at 120 to 140 ° C, more preferably 120 to 135 ° C. As described above, high-pressure dyeing can reduce the L * value, which is an index of color development, to 50 or less while suppressing a decrease in the strength of the yarn. According to the study by the present inventors, the coloring property of the woven or knitted fabric improves as the dyeing temperature increases, and the decrease in strength tends to be suppressed as the dyeing temperature decreases. Therefore, the staining conditions are appropriately determined in consideration of the harmony between the two.

  Here, if the dyeing temperature is less than 120 ° C., the color developability of the woven or knitted fabric tends to be reduced, and it tends to be difficult to apply to a field that requires deep dyeing. Not only is the improvement in the properties hardly observed, but the strength of the yarn is rapidly lowered, and the physical properties of the woven or knitted fabric may be affected, and both are not preferable.

  After dyeing, soaping, fixing, and final setting are performed as necessary to obtain the desired woven or knitted fabric.

Next, the present invention will be specifically described with reference to examples. In addition, evaluation of the physical property and characteristic in an Example and a comparative example was based on the following.
1. Dimensional change rate when wet The dimensional change rate in the weft direction of the woven or knitted fabric was measured five times by the above-described method, and the average of these was taken as the dimensional change rate PA.
2. Light resistance of woven or knitted fabric First, a yarn is extracted from a dyed woven or knitted fabric, and tensile strength is measured in accordance with JIS L1013 8.5.1 (using a constant speed extension type testing machine, gripping distance 20 cm, pulling speed 20 cm / min), this was CSb (cN / dtex). On the other hand, for the same knitted or knitted fabric, using a carbon fade meter (manufactured by Suga Test Instruments Co., Ltd.), based on JIS L0842 7.2 c) third exposure method, black panel temperature is 63 ± 3 ° C., grade 5 UV was irradiated until the blue scale of the standard faded. Thereafter, the yarn was similarly extracted from the woven or knitted fabric, and the tensile strength was measured in the same manner as described above, and this was designated as CSa (cN / dtex). Then, CSb and CSa were substituted into the equation CSt = CSa / CSb × 100, and the yarn strength retention rate CSt (%) was calculated. It can be said that the higher the strength retention of the yarn, the better the light resistance of the woven or knitted fabric. This measurement was performed on a woven or knitted fabric dyed with a black dye. The yarns to be extracted were weft yarns in the case of woven fabrics and deknitting yarns in the case of knitted fabrics.
3. Texture of knitted or knitted fabric Based on a sensory test, it was evaluated in three stages from ◎ (excellent) to × (poor).

Example 1
Using a nylon 11 chip with a relative viscosity (measured at 96% sulfuric acid as a catalyst and a concentration of 1 g / dL at a temperature of 25 ° C.) of 2.0 and a monomer amount of 0.25%, the moisture content is adjusted to 0.05 mass%. did. Then, this was supplied to an extruder type melt extruder, melted at a spinning temperature of 255 ° C., then discharged from a spinneret having 34 spinning holes, wound at a speed of 4200 m / min, and a nylon 11 yarn of 78 dtex 34f. Got the article. The moisture content of the obtained yarn was 0.4%.

  Next, using the obtained nylon 11 yarn as the warp, weaving the plain fabric 2 with a warp density of 119 / 2.54 cm and a weft density of 80 / 2.54 cm. After weaving, using “Sun Mall FL (trade name)” manufactured by Nikka Chemical Co., Ltd. at a concentration of 1 g / L, each raw machine is scoured at 80 ° C. for 20 minutes, preset at 160 ° C. for 1 minute, and then red. The dye was dyed at 130 ° C. for 30 minutes at a bath ratio of 1:50 using a black or black acid dye. As the red acid dye, “Sumitol Milling Red RS (125%) (trade name)” manufactured by Sumitomo Chemical Co., Ltd. is used at a concentration of 2% omf, and as the black acid dye, “Mitsui Nylon Black” manufactured by Mitsui BASF is used. “GL (trade name)” was used at a concentration of 5% omf. Further, as leveling agents, “Levelan NKD (trade name)” manufactured by Maruhishi Oil Chemical Co., Ltd. was used at a concentration of 2% omf, and acetic acid (48% product) at a concentration of 0.2 ml / L.

  Thereafter, “Sun Mall FL (trade name)” manufactured by Nikka Chemical Co., Ltd. was soaped at 80 ° C. for 20 minutes using a concentration of 1 g / L, and then “Sun Life E-37 (trade name)” manufactured by Nikka Chemical Co., Ltd. Was fixed at 80 ° C. for 20 minutes using a concentration of 1% omf, and further subjected to final setting at 160 ° C. for 1 minute to obtain a woven fabric having a warp density of 123 / 2.54 cm and a weft density of 87 / 2.54 cm. .

  Table 1 shows the physical properties and characteristics of the resulting fabric. As is apparent from Table 1, this woven fabric was excellent in dimensional stability, and sufficiently maintained its strength even when irradiated with ultraviolet rays from a carbon fade meter. Moreover, both red and black had good color developability, and the yarn constituting the woven fabric had sufficient strength (CSb in the table). Furthermore, it was excellent in terms of texture. And since this woven fabric uses nylon 11 yarn, it can be said that it considered the resource and the environment.

(Examples 2 to 4)
0.1% by mass of hindered phenolic antioxidant “IRGANOX1010 (trade name)” manufactured by Ciba Japan Co., Ltd. and 0.2 mass of phosphorus processing heat stabilizer “IRGAFOS168 (trade name)” manufactured by Ciba Japan Co., Ltd. Nylon 11 yarn was obtained under the same conditions as in Example 1 except that the same nylon 11 tip as in Example 1 was used. Thereafter, the raw material 6 of the same standard as Example 1 was obtained, and then Example 1 except that the dyeing temperature was 120 ° C. (Example 2), 130 ° C. (Example 3), and 140 ° C. (Example 4). Dyeing process under the same conditions as above, warp density 122 / 2.54 cm, weft density 86 / 2.54 cm (Example 2), warp density 123 / 2.54 cm, weft density 87 / 2.54 cm ( The woven fabric of Examples 3 and 4) was obtained.

  As shown in Table 1, each fabric has good color developability for both red and black, and as the dyeing temperature increases, the strength of the yarn constituting the fabric (CSb in the table) decreases. The strength enough to withstand practical use was maintained.

(Example 5)
The nylon 11 yarn used in Example 1 was false twisted at a yarn speed of 110 m / min, a draw ratio of 1.06 times, a false twist number of Z3489 T / M, and a temperature of 140 ° C. to produce false twisted yarn. Next, the false twisted yarn was used to knit with a mock-rodia structure on a 33-inch, 28-gauge circular knitting machine. Thereafter, scouring, dyeing, soaping, fixing, final set under the same conditions as in Example 1 And obtained a knitted fabric.

  The obtained knitted fabric was excellent in dimensional stability and light resistance, as well as in the case of Example 1, good color developability for both red and black, and the yarn constituting the knitted fabric had sufficient strength. Furthermore, it was excellent in terms of texture.

(Comparative Examples 1 and 2)
Under the same conditions as in Example 1, except that a nylon 6 tip having a relative viscosity of 3.5 and a monomer amount of 0.4% was used instead of the nylon 11 tip, and the moisture content was adjusted to 0.05% by mass. A nylon 6 yarn of 78 dtex34f was obtained. The moisture content of the obtained yarn was 4.5%. Thereafter, the same procedure as in Example 1 was performed except that the obtained nylon 6 yarn was used and the dyeing temperature was 100 ° C. (Comparative Example 1) and 130 ° C. (Comparative Example 2), and the warp density was 122 yarns / 2. A woven fabric having a weft density of 86 / 2.54 cm (Comparative Example 1), a warp density of 124 / 2.54 cm, and a weft density of 88 / 2.54 cm (Comparative Example 2) was obtained.

  The fabric according to Comparative Example 1 has a relatively good color developability for both red and black, and the yarn constituting the fabric had sufficient strength, but the desired dimensional stability and light resistance could not be obtained. It was.

  The woven fabric according to Comparative Example 2 had good color developability, but a decrease in strength was observed in the yarns constituting the woven fabric, and the desired dimensional stability and light resistance were not obtained.

  Furthermore, since both fabrics use polyamide 6 yarns that use petroleum-derived raw materials, problems remain in consideration of resources and the environment.

(Comparative Examples 3 and 4)
The same procedure as in Example 1 was carried out except that the dyeing temperature was changed to 100 ° C. (Comparative Example 3) and 150 ° C. (Comparative Example 4) instead of 130 ° C., warp density 122 / 2.54 cm, weft density 86/2 A .54 cm fabric was obtained.

  The fabric according to Comparative Example 3 was basically excellent in characteristics such as dimensional stability as in Example 1, but was poor in color developability.

  The woven fabric according to Comparative Example 4 was basically excellent in characteristics such as dimensional stability as in Example 1, but since the dyeing temperature was high, a decrease in the strength of the yarn constituting the woven fabric was observed. It was.

(Comparative Example 5)
A knitted fabric is obtained in the same manner as in Example 5 except that the nylon 6 yarn used in Comparative Example 1 is used instead of the nylon 11 yarn, and the false twisting temperature is 170 ° C. instead of 140 ° C. It was.

  The obtained knitted fabric had good dimensional stability, color developability and texture, but a decrease in strength was observed in the yarn constituting the knitted fabric.

(Example 6)
A PET chip having a relative viscosity of 2.5 was melt-spun at a spinning speed of 3250 m / min and a spinning temperature of 285 ° C., and then stretched to obtain a polyester yarn of 84 dtex 36f. The moisture content of the obtained yarn was 0.4%.

  Next, the polyester yarn is used as the warp, and the nylon 11 yarn used in Example 1 is arranged as the weft. The machine of plain structure with a warp density of 113 / 2.54 cm and a weft density of 80 / 2.54 cm. Was woven. After that, as a dye, together with the black acid dye 5% omf used in Example 1, the black disperse dye “Dianix Black HG-FS (200%) (trade name)” 5% omf manufactured by DyStar is used together. Except for the above, the raw machine was dyed under the same conditions as in Example 1 to obtain a woven fabric having a warp density of 123 / 2.54 cm and a weft density of 85 / 2.54 cm.

  Since this woven fabric was dyed under high pressure, the coloring property of the woven fabric was good. In addition, in this woven fabric, the wefts maintained the strength that could withstand practical use, despite being dyed under high pressure.

  In addition, the strength retention rate T in Table 1 is a result measured for nylon 11 yarn used as weft.

(Comparative Examples 6 and 7)
0.1% by mass of hindered phenolic antioxidant “IRGANOX1010 (trade name)” manufactured by Ciba Japan Co., Ltd. and 0.2 mass of phosphorus processing heat stabilizer “IRGAFOS168 (trade name)” manufactured by Ciba Japan Co., Ltd. Nylon 6 yarn was obtained under the same conditions as in Comparative Example 1 using the same nylon 6 tip as in Comparative Example 1 except that the content was%. The warp density is the same as in Example 6 except that the nylon 6 yarn is used instead of the nylon 11 yarn, and the dyeing temperature is 100 ° C. (Comparative Example 6) and 130 ° C. (Comparative Example 7). A woven fabric having 122 yarns / 2.54 cm, a weft density of 84 yarns / 2.54 cm (Comparative Example 6), a warp density of 124 yarns / 2.54 cm, and a weft density of 86 yarns / 2.54 cm (Comparative Example 7) was obtained.

  In the woven fabric according to Comparative Example 6, the weft was satisfactory in terms of strength and color, but the warp was not satisfactorily obtained in terms of density due to atmospheric pressure dyeing.

  The fabric according to Comparative Example 7 had a deep color as a whole and was satisfactory in terms of color developability, but a decrease in strength was observed in the weft due to high-pressure dyeing.

  Furthermore, since both the woven fabrics contained nylon 6 yarn, satisfactory dimensional stability could not be obtained.

(Comparative Example 8)
The polyester yarn used in Example 6 was arranged on the warp and weft, and a plain machine was woven at a warp density of 119 / 2.54 cm and a weft density of 87 / 2.54 cm. Thereafter, after dyeing, a step of reducing and washing at 80 ° C. for 20 minutes in a bath containing 5 g / L of soda ash, 1 g / L of hydrosulfite and 1 g / L of “Sanmohl FL (trade name)” manufactured by Nikka Chemical Co., Ltd. is added. Except for the above, dyeing was performed under the same conditions as in Example 6 to obtain a woven fabric.

  Although the obtained woven fabric is excellent in characteristics such as dimensional stability and color developability, it is inferior in texture to the woven fabric according to the examples, and also uses a polyester yarn using a petroleum-derived raw material. However, there was a problem in consideration of resources and the environment.

(Example 7)
940 dtex 140f under the same conditions as in Example 1 except that the relative viscosity of the nylon 11 tip is 2.5 instead of 2.0 and the number of spinning holes is 140 instead of 34. Nylon 11 yarn was obtained. The moisture content of the obtained yarn was 0.4%.

  Next, three yarns obtained by aligning three yarns to 2820 dtex 420f and arranging two yarns 1880 dtex 280f to weft yarns are respectively arranged to have a warp density of 23 / 2.54 cm and a weft density of 24 yarns. A weaving machine with a plain structure was woven at 2.54 cm. Thereafter, the black acid dye described above is used as the dye and dyed under the same conditions as in Example 1 to obtain a woven fabric having a warp density of 24 / 2.54 cm and a weft density of 25 / 2.54 cm. It was.

  The obtained woven fabric was excellent in dimensional stability, light resistance and color development, and the yarns constituting the woven fabric had sufficient strength. Moreover, when a cocoon was produced using this woven fabric and actually used, it did not lose its shape even when it was wet with rain.

Claims (7)

  A dyed woven or knitted fabric using nylon 11 yarn, wherein the nylon 11 yarn has a strength of 3.0 cN / dtex or more, and the L * value of the woven or knitted fabric is 50 or less. Woven knitting.   The knitted or knitted fabric according to claim 1, wherein the nylon 11 yarn has a strength retention of 80% or more after wet heat treatment at 130 ° C for 30 minutes in a stage to be used for weaving and knitting.   The woven or knitted fabric according to claim 1 or 2, comprising a polyester yarn.   Outer wear using the woven or knitted fabric according to any one of claims 1 to 3.   A fabric made using the woven or knitted fabric according to any one of claims 1 to 3.   An umbrella made using the woven or knitted fabric according to any one of claims 1 to 3. A dyeing method comprising dyeing a woven or knitted fabric using nylon 11 yarn at 120 to 140 ° C.