JP5599661B2 - Stretch coat knitted fabric - Google Patents

Description

  The present invention relates to a knitted fabric excellent in stretchability suitable for sports clothing, and in particular, when it is thin and lightweight and possesses high toughness and is used for down-use clothing, The present invention relates to a stretch coat knitted fabric that prevents blowing out and has windproof performance.

  Since the knitted fabric as a textile material forms a three-dimensional loop structure, when looking at the plane movement of the knitted fabric, the knitted fabric has loop bends in the organization. Therefore, it can be said that the stretchability is extremely large due to the expansion and contraction. In particular, it can be said that the air permeability is a typical characteristic of the knitted fabric compared with the woven fabric. However, there are no problems with stretchability and breathability when using cotton padding for clothing, especially down, but it is suitable for use in down use with the knitted fabric as it is because blowout blows out from the gap in the knitted fabric. It is true that there is no problem.

On the other hand, it is known to apply a resin laminate to one side of the knitted fabric in order to suppress the blowout of the batting while giving stretchability to the side of the jacket containing the batting, but when the laminate is applied, the breathability is completely Therefore, there is a problem in practical use such that it is difficult to blow batting in the production process of clothing and it is difficult to fold the clothing in a compact manner in handling after clothing sewing (Patent Documents 1 and 2). On the other hand, there is a method in which the yarn forming the knitted fabric is knitted with high density by combining heat shrinkage yarn, and then the knitted fabric is subjected to shrink processing in the dyeing step to increase the density of the knitted fabric. Then, the actual situation is that the knitted fabric becomes heavy and the stretchability hardly appears (Patent Documents 3 and 4). In this case, the air permeability of the knitted fabric is at most 10 cc / cm ² / sec. When it is used as the side of the down jacket, there is a feeling of clothing stiffness, the folding property is not good, and the blow-down of the batting is avoided. difficult.

JP 2000-51552 A JP 2010-188941 A Japanese Patent Laid-Open No. 2004-256594 JP 2007-217834 A

  The present invention addresses the many problems that cannot be achieved with the prior art using knitted fabric as a clothing material as described above, and has both strength and stretchability despite being thin and lightweight. An object of the present invention is to provide a stretch knitted fabric for clothes having excellent air permeability and function of suppressing feather blowing.

  In order to solve the above-mentioned problems, the present inventors have repeatedly studied as follows. That is, when the knitted fabric is laminated, the air permeability is blocked, and the stretch property, which is the original characteristic of the knitted fabric, is greatly reduced. In addition to this, the knitted fabric itself becomes heavy due to the influence of the laminating film and the adhesive. On the other hand, if it is intended to provide a thin and light knitted fabric by coating the knitted fabric, there arises a problem that the coating resin may fall through the stitch. Alternatively, when a thin knitted fabric is directly coated, there is a problem that the strength of the knitted fabric itself is greatly reduced. As a result of diligent examination of such problems, various problems are solved by adding a thin resin coat process to a knitted fabric knitted at high density with a high gauge knitting machine using a specific fineness high strength high elongation fiber, The present invention has been completed.

  This invention which came to solve the said subject consists of the following structures.

The gist of the present invention is a knitted fabric knitted from synthetic multifilaments having a total fineness of 80 dtex or less and a single yarn fineness of 1.4 dtex or less, and one side of the knitted fabric is coated with a resin, It is desirable that the knitted fabric is a stretch coat knitted fabric having a basis weight of 115 g / m ² or less, and the knitted fabric is knitted with a knitting machine gauge 32 or more.

It is preferable that the synthetic fiber multifilament constituting the knitted fabric is a nylon false twisted yarn having a total fineness of 45 dtex (hereinafter also referred to as “dtex”) or less, and the stretch coat knitting that satisfies the following yarn physical properties at the same time The ground is preferred.
A: Breaking strength (DS) is 80 cN or more,
B: Toughness [DT√ (DE)] is 25 or more,
DT: Breaking strength (cN / dtex)
DE: Elongation at break (%)

  It is desirable that the knitted fabric has a circular knitted interlock structure, and it is preferable that the stretch coat knitted fabric has a warp stretch of 5% or more and a horizontal stretch of 20% or more.

  The resin coat amount of the stretch coat knitted fabric is preferably 0.5 to 20.0% or less with respect to the knitted fabric weight, and the resin desirably contains 50% by mass or more of the acrylic acid polymer component. .

  It is desirable that the stretch coat knitted fabric is a stretch coat knitted fabric having a mullen burst strength of 400 kPa or more.

  The knitted fabric of the present invention is not only excellent in thinness and lightness required for sports clothing, but also excellent in stretch properties, and can be optimally used for sports knitted fabrics that require windproof properties. When applied to the side of the jacket, since there is no down (feather) blowing, it can be suitably used as a new sense down jacket even in application fields that are difficult to achieve with conventional knitted fabrics. .

FIG. 1 is a photograph of a cross section of a coated knitted fabric obtained in Example 1 of the present invention, taken at a magnification of 100 using a scanning electron microscope. The photograph shows the knitted fabric on the lower side and the coat layer on the upper side.

Hereinafter, embodiments of the present invention will be described in detail.
The knitted fabric of the present invention is composed of a knitted fabric using a synthetic fiber multifilament. For example, when using a spun yarn, such a lightweight and soft surface texture does not appear so excellent quality and aesthetics. Is shown.

  The synthetic fiber multifilament used in the present invention has a total fineness of 80 dtex or less, and in order to keep the balance of the strength of the knitted fabric itself and the thin and light weight of the intended stretch coat knitted fabric, 10 to 70 The range of decitex is suitable, preferably 15 to 45 dtex, particularly 20 to 35 dtex. Here, when the total fineness exceeds 80 dtex, it is not preferable because the weight reduction over the conventional product cannot be achieved. On the other hand, when the total fineness is less than 10 dtex, the cover factor of the knitted fabric is reduced, and there is a possibility that the resin coated on one side of the knitted fabric may get through, and the rupture strength and tear strength of the knitted fabric are weakened. Since the above problem comes out, it is not preferable.

  The total fineness of the multifilament mentioned here includes the following states. That is, in the case where a plurality of yarns are arranged at the time of knitting of the knitted fabric and set on a knitting machine, it means the total fineness of the arranged yarns. In the case of yarns that have been pre-aligned and interlaced or twisted, the total fineness of the twisted yarn is also referred to.

  The single yarn fineness of the multifilament constituting the knitted fabric of the present invention needs to be 1.4 dtex or less in order to finish the texture of the intended knitted fabric softly. If it exceeds 1.4 decitex, the texture of the knitted fabric becomes hard. Further, if it is 0.2 dtex or less, the durability of the knitted fabric surface becomes weak, and snag and pilling tend to occur. It is important to achieve a good balance between suppressing the occurrence of knitting of the knitted fabric and softening the texture, and preferably 0.5 to 1.2 dtex. In particular, it should be 0.3 to 1.1 dtex.

  The cross-sectional shape of the synthetic fiber filament single yarn constituting the knitted fabric of the present invention is not particularly limited, but for example, a round shape, a polygon shape, a multileaf shape, a hollow shape, a cross shape, a flat shape, and a special variant Any shape such as a cross-section can be applied, and an assembly of different cross-sections may be used. Further, the degree of deformity and the hollowness are not particularly limited, but a round cross section is preferable unless a special glossy feeling is given. In particular, a flat cross section is preferably used because the air permeability can be lowered. Further, a so-called thick and thin yarn having thick spots in the fiber axis direction may be used. In addition, the synthetic fiber multifilament constituting the knitted fabric of the present invention may be added with a hygroscopic substance, an antioxidant, a matting agent, an ultraviolet absorber, an antibacterial agent or the like alone or in combination. Moreover, it is not specifically limited about characteristics other than the strong elongation characteristic of fibers, for example, boiling water shrinkage rate, thermal stress, birefringence, thickness spots, and the like. The fiber may be crimped such as false twisting, and may be a mixed yarn or a composite yarn with filaments having different shrinkage rates or different cross-sectional shapes.

  The synthetic fiber multifilament used in the present invention is produced by melt spinning, wet spinning, dry spinning, and other known spinning methods using a spinnable polymer. For example, polymers such as polyamide, polyester, polyolefin, polyacrylonitrile and the like can be mentioned. In particular, a polymer having thermoplasticity is preferable. In addition, it is more desirable to perform false twist crimping on the synthetic fiber multifilament in order to assist in achieving the object. In the present invention, a polyamide fiber or a polyester fiber is preferably used as the synthetic fiber multifilament. Particularly preferred are high-strength polyamide multifilaments.

  The polyamide fiber referred to in the present invention is a synthetic polymer having an amide bond, and it is preferable to select and use a fiber having high strength, high toughness, abrasion resistance and dimensional stability. In the case of using polyamide fibers, it is most suitable as a side fabric for down wear, and a compact, soft and light knitted fabric can be provided. Furthermore, lightness and high tear strength can be satisfied, and from the viewpoint of cost, nylon multifilaments, particularly nylon 6 and nylon 66 multifilaments are preferably used. In this case, it is suitable for use in materials such as sleeping bags, tents, paragliders, parachutes, or sports clothing such as ski / snowboard wear and outdoor wear.

  The polyamide multifilament used in the present invention is preferably made using a polyamide resin having a relative viscosity of 2.5 or more, more preferably 3.0 or more, particularly 3.5 or more. As a result, although it has a breaking strength of 4.5 cN / dtex or more, the breaking elongation is increased to 35 to 50%. When the relative viscosity is less than 2.5, it is difficult to obtain a multifilament of high strength and high elongation type. Further, the breaking strength is preferably 5.0 cN / dtex or more, particularly 5.5 cN / dtex or more. On the other hand, if the relative viscosity is too high, the spinning operability may be adversely affected. Therefore, the relative viscosity is preferably 5.0 or less. On the other hand, if the breaking strength is too high, the breaking elongation tends to be too low or the texture tends to be hard, so the breaking strength is preferably 10 cN / dtex or less.

  There is no particular limitation on the method for producing the polyamide multifilament, but it can be produced by carrying out the spinning drawing continuous apparatus by the spin draw method or by two steps using the spinning apparatus and the drawing apparatus. The peripheral speed of the take-up godet roller is preferably 1500 to 4000 m / min, more preferably spun in the range of 2000 to 3000 m / min, and subsequently drawn to a breaking strength of 4.5 cN / dtex or more and a breaking elongation of 35 to 50%. Preferably it is adjusted.

  In producing the polyamide multifilament, the polyamide resin to be used may be a polyamide-based copolymer or a mixture. In order to improve the hygroscopicity, a hygroscopic monomer may be copolymerized. In the multifilament yarn production stage, a core-sheath type composite polyamide multifilament in which a hygroscopic resin is confined in the core may be used.

On the other hand, a polyester fiber may be used as the synthetic fiber multifilament used in the knitted fabric of the present invention. The polyester fiber is a polyester in which at least 80% of all structural units are ethylene terephthalate, and in particular, polyethylene terephthalate produced from terephthalic acid or a functional derivative thereof and ethylene glycol or ethylene oxide. -The main target, but in addition to terephthalic acid or a functional derivative thereof as an acid component, less than 20 mol%, preferably less than 10 mol% of isophthalic acid, adipic acid, sepatinic acid, azelaic acid, naphthalic acid Acid, P-oxybenzoic acid, 2.5-dimethylterephthalic acid, bis (P-carboxyphenoxy) ethane, 2.6-naphthalenedicarboxylic acid, 3.5-di (carbomethoxy) benzenesulfonate or the like A functional derivative of ethylene glycol as a glycol component Crab diethylene glycol - le, propylene glycol - le, 1,4 butanediol - may be a copolymer obtained by adding the Le - Le, divalent alcohols such as 1,4-pyro carboxymethyl cyclohexane. Further, for example, a copolymer to which an aromatic polyphosphonate is added in order to impart flame retardancy may be used. Further, an antioxidant, a matting agent, a colorant, a dyeability improver, a flame retardant improver, an antistatic agent and the like may be added to these polymers.
Moreover, the cross-sectional shape of this polyester single fiber may take any shape such as a polygonal cross-section, a multi-leaf cross-section, a flat cross-section, a hollow cross-section, and other specially modified cross-sections in addition to a normal round cross-section.

  In the present invention, the physical properties of the target knitted fabric are improved by knitting the knitted fabric with a high gauge knitting machine of 32 gauge or more. That is, when knitting with a gauge of less than 32 gauge, the cover factor of the knitted fabric is reduced, the gap between the filaments constituting the knitted fabric is increased, and the resin coating is formed on the single-sided layer. It becomes impossible. The resin escapes to the surface opposite to the so-called direct contact surface. Here, those knitted with a knitting machine of 32 gauge or more eliminate such a problem of the resin see-through. For these reasons, it is particularly preferable to perform knitting with a high gauge knitting machine of 36 gauge or more.

  The thickness of the knitted fabric of the present invention is preferably 0.5 mm or less. Here, if the thickness exceeds 0.5 mm, the knitted fabric exhibits a hard texture, and the stretchability also decreases. The thickness is preferably 0.40 mm or less, particularly 0.35 mm or less. However, when the thickness is 0.20 mm or less, the thickness of the knitted fabric is so thin that the resin is lost to the surface opposite to the coated surface, which is not preferable.

The basis weight of the coated knitted fabric of the present invention should be 115 g / m ² or less, preferably 100 g / m ² or less, particularly 90 g / m ² or less. If it exceeds 115 g / m ² , the intended weight reduction cannot be achieved, a hard texture is exhibited, and the stretchability is also deteriorated.

  The fineness of the synthetic fiber multifilament constituting the knitted fabric of the present invention is 45 decitex or less, preferably 33 decitex. It is particularly preferable when the synthetic fiber multifilament is selected from nylon fibers and false twisted crimped filaments are used. Furthermore, the synthetic fiber multifilament used in the present invention is preferably a false twisted yarn. The false twisted yarn is also called a woolen yarn, but it is a method in which the filament is twisted while continuously applying heat, and continuously twisted in the opposite direction to increase the bulk of the yarn. By applying false twisting, the swelling of the yarn increases and a space is created between the filaments. As a result, the texture becomes soft and the stretchability is improved.

  The false twisted yarn will be described below. For false twisting of multifilaments, known false twisting methods such as magnet spindle (pin) false twist, multi-axis circumscribed (friction disk) friction false twist, and belt nip friction false twist can be employed. In consideration of productivity, operational stability, quality, etc., a multi-axis circumscribed type (friction disk) friction false twist is preferable. Multi-axis circumscribed type (friction disk) friction false twisting tool is composed of guide disk / twisting disk / guide disk to D / Y ratio (ratio of disk peripheral speed to yarn speed), distance between disk axes, and twisting area. It is possible to appropriately adjust various conditions such as the yarn overfeed rate (or draw ratio) and heater temperature. Of course, in the case of a magnet spindle (pin) false twist, conditions such as the yarn overfeed rate (or draw ratio), the heater temperature, the spindle (pin, spinner) rotation speed, etc. can be set as appropriate. Regarding friction false twisting, it is possible to set conditions such as the yarn overfeed rate (or draw ratio) to the twisting region, the heater temperature, the angle of the twisting belt, and the belt nip pressure. In the case of multi-axis circumscribed type (friction disk) friction false twist, known materials such as polyurethane and ceramics with a ceramic coating applied to the metal surface can be used as the material of the twisted disk. In view of the frictional characteristics of the yarn, damage to the yarn, etc., a polyurethane material is more preferable. The disk dimensions such as the thickness, diameter, and disk gap of the twisted disk, and the number of disk components greatly affect the thread gripping property during twisting, and can be appropriately selected and adjusted.

  In the false twisting process, a drawn yarn is used as a supply yarn, and undrawn yarn (UDY) and partially oriented yarn (POY) is used as a supply yarn to simultaneously draw and false twist. Any of the drawn false-twisting may be performed, but a method of using a drawn yarn as a supply raw yarn is more preferable in consideration of crimp characteristics of the obtained false-twisted yarn, wet heat torque, and the like. Further, when the false twisted yarn is wound around the package, it is preferable to apply a pressure-air entanglement process such as an interlace, or after-oiling to improve the convergence and improve the handleability after the next process.

  As a false twist heat fixing method, only the first heater is heated and false twist heat fixed (1 heater false twist), and both the first heater and the second heater are heated and false twist heat fixed (2 heaters). Any one of false twists can be used, but to improve the crimp elongation (CC) and wet heat torque (TQ2) to prevent soft touch and moire phenomenon, use the above 1 heater false twist More preferably. Further, when winding the false twisted yarn, an appropriate amount of oiling can be carried out as necessary to prevent electrification and improve convergence.

In the case where the synthetic fiber multifilament constituting the knitted fabric of the present invention is a nylon multifilament false twisted yarn, it is preferable that the following yarn physical properties are satisfied.
A: Breaking strength (DS) is 80 cN or more,
B: Toughness [DT√ (DE)] is 25 or more,
DT: Breaking strength (cN / dtex)
DE: Elongation at break (%)

  In order to obtain the excellent burst strength and tear strength of the stretch knitted fabric of the present invention, the breaking strength (DS) of the nylon multifilament false twisted yarn is 80 cN or more, and the toughness [DT√ (DE)] is 25 or more. It is preferable that When the breaking strength is less than 80 cN and / or the toughness is less than 25, as a result, the mullen burst strength of the stretch knitted fabric is lowered, which is not preferable. Specifically, when the breaking strength of the nylon multifilament false-twisting yarn constituting the knitted fabric is 80 cN or more and the toughness is 25 or more, the mullen burst strength of the knitted fabric can be realized to 400 Kpa or more. By setting the Mullen bursting strength to 400 Kpa or more, it can be used with confidence when it is used as clothes. If the mullen bursting strength is less than 400 Kpa, it is not preferable because it is practically inferior in durability when used as a garment. Therefore, the breaking strength of the nylon multifilament false twisted yarn is preferably 100 cN or more, the toughness is 28 or more, more preferably the breaking strength is 120 cN or more and the toughness is 30 or more. The rupture strength and tear strength of the knitted fabric are affected not only by the breaking strength of the yarn but also by the breaking elongation.

  It is desirable that the crimp recovery rate of the synthetic fiber multifilament false twisted yarn used in the present invention is a certain value or more. Here, when the crimp recovery rate is small, the stretchability and kickback property of the knitted fabric are inferior. If it is too large, the basis weight will be high. The knitting structure of the stretch coat knitted fabric of the present invention is preferably an interlock structure. The interlock structure is a basic knitting structure of a double knit, and is a knitting structure suitable for achieving smoothness, thinness, stretchability, and high density of the fabric surface.

  Since the stretch coat knitted fabric of the present invention obtains a special effect that the feeling of tension when wearing clothes is reduced, it is preferable that the vertical stretch is 5% and / or the horizontal stretch is 20% or more. . More preferably, the vertical stretch is 7% and / or the horizontal stretch is 25% or more.

  It is one of the important requirements that the knitted fabric of the present invention is coated with a resin. The resin coat here means a state in which the resin is uniformly applied to one side of the knitted fabric. Once the resin film is formed, the form is different from the so-called laminated one attached to the knitted fabric. Further, the knitted fabric is dipped in a resin tank and the resin is not applied to the entire knitted fabric.

  The stretch knitted fabric of the present invention is coated with a polymer. As a coating method, a general coating method such as a dry method, a wet method, a gravure method, or a printing method may be used. In particular, a dry coating is preferably used in order to make it thin and uniformly adhere. As a coating technique, coating equipment such as a reverse coater, a kiss roll coater, and a knife coater can be used. Of these, a knife coater is preferably used.

  The adhesion method after drying the coating resin is preferably 0.5 to 20.0% by weight, more preferably 1 to 15% by weight, and still more preferably 2 to 10% by weight based on the weight of the knitted fabric. If it is less than 2% by weight, pinholes are easily formed and the air permeability tends to decrease. If it exceeds 20.0% by weight, the fabric weight after coating becomes heavy, and it becomes difficult to obtain the thin and light knitted fabric of the present invention.

  The knitted fabric of the present invention may be subjected to water repellent treatment before being coated with a resin. Since the knitted fabric of the present invention is thin, the resin tends to slip through during coating. Here, it is more preferable to carry out water-repellent treatment in order to prevent back-through. By performing the water-repellent treatment, the back-through is prevented and the resin can be coated thinly and uniformly. The water repellent may be a general fiber water repellent, and for example, a silicone water repellent, a fluorine water repellent, and a paraffin water repellent are preferably used. Among them, the fluorine-based water repellent is particularly suitable for uniformly coating a thin knitted fabric. As a water repellent method, a general method such as a padding method, a spray method, printing, coating, or a gravure method can be used.

  The knitted fabric coating resin of the present invention may be any of acrylic acid ester type, urethane type, silicone type, styrene type, fluorine type, vinyl chloride type, vinyl acetate type, polyamide type, synthetic rubber type resin such as chloroprene, etc. Ester, urethane and silicone resins are preferably used. A copolymer of these resins is preferably used. Further, these resins may be mixed before use. However, as a result of intensive studies by the present inventors, it has been found that a resin containing 50% or more of an acrylic resin component is suitable because of cost, adhesiveness and durability of the coating film, and high fastness. It was. More preferably, it contains 75% or more. Examples of acrylic resin components include polymethyl methacrylate, polyethyl methacrylate, polyisopropyl methacrylate, polyisobutyl methacrylate, polyacrylonitrile, polymethacrylonitrile, and the like. . There are two types of coating: dry coating and wet coating. Any coating method may be used, but dry coating is preferable because it has a merit that the coating film can be thinned. The thinner the coating film thickness after drying and film formation, the better. However, it is preferably 3 to 30 μm, more preferably 5 to 20 μm, and particularly preferably 5 to 15 μm. When the film thickness exceeds 30 μm, the texture becomes hard and the knitted fabric becomes heavy. On the other hand, if the film thickness is less than 3 μm, defects such as pinholes appear, which is not preferable.

  These base resins may be either water-based or solvent-based. The water system is preferable in consideration of problems such as working environment and waste liquid. Examples of the solvent constituting the solvent system include isopropyl alcohol, toluene, dimethylformamide, methyl ethyl ketone, dimethylacetamide, dimethyl sulfoxide and the like. Further, even if it is an aqueous system, it can be used in combination with water as long as it is a solvent that can be arbitrarily mixed with water or can be dissolved in an appropriate amount without separation. For example, isopropyl alcohol, dimethyl Examples include formamide. Further, various surfactants and dispersants may be used for emulsification and dispersion. The acrylic resin to be formed may contain inorganic fine particles, and may be added for imparting texture, proofing, reduced thermal conductivity, and other various functionalities.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to these Examples. In addition, each performance evaluation in an Example was performed with the following method.

(Measuring method of fineness (dtex))
Three polyamide multifilament caskets having a length of 100 m were prepared, each weight (g) was measured, an average value was obtained, and the result was multiplied by 100.

(Measurement method of breaking strength and breaking elongation)
Instron Japan K.K. Model 4310 is used for measurement. Add 1/33 gram to the yarn fineness (dtex) as the initial load, create an SS chart under the conditions of a yarn length of 20 cm and a tensile speed of 20 cm / min. Measure and break at n = 3 for one sample The elongation and breaking strength are read from the chart, and the average value is obtained. The breaking strength is obtained by dividing by the fineness (dtex).

(Measurement method of expansion / contraction recovery rate (CR))
Using a lap reel equipped with a tension adjusting device (scale measuring instrument, frame circumference: 1.000 m), an initial load of 0.1 cN / dtex is applied to prepare a 10-cm skein (1000 m). This skein is wrapped in gauze and subjected to hot water treatment at 90 ± 2 ° C. for 20 minutes. Then, after dehydration, it is air-dried in a horizontal state for 24 hours in a standard state of 20 ° C. × 65% RH. Next, the skein length L3 is measured 120 seconds after applying a load of 0.1156 cN / dtex in 20 ° C. water. For this skein, the load was changed from 0.1156 cN / dtex to 0.00227 cN / dtex, and the skein length L4 was measured 120 seconds after the load was applied in the same manner. Next, the expansion / contraction restoration rate (CR) is evaluated by the following formula (4). The measurement is repeated 10 times, and the average value of 10 times is taken as the measured value.
Expansion / contraction recovery rate (CR) = ((L3-L4) / L3) × 100 (%)

(Measurement method of thickness)
The thickness of the knitted fabric was measured according to JIS-L-1018 1998.

(Measurement method of knitted fabric density)
According to JIS-L-1018 1998, the course density (pieces / inch) and the wale density (pieces / inch) of the knitted fabric were measured.

(Measuring method of fabric weight)
It measured according to JIS-L1096.

(Measurement method of stretchability)
In accordance with the method described in JIS-L-1096 8.14.1 (B method: constant load method), the width of the measurement sample was 5 cm, and the elongation at the time of 98.1 cN load was evaluated.

(Method of measuring the air permeability)
JIS-L-1096 8.27.1 vent defined in property (Frazier method A method) employed was measured.

(Measurement method of burst strength)
It measured by JIS-L-1096 A method (Murren form method).

(Measurement method of coating thickness)
The cross section of the coated knitted fabric was photographed using a scanning electron microscope (SEM). In order to clearly photograph the cross section, the cross section (cross section in the thickness direction of the knitted fabric) was cut after freezing with liquid nitrogen. Using a sharp safety razor as a cutting method, a blade was inserted along the wale stitch of the knitted fabric, and a cross section in the horizontal direction of the coated knitted fabric was cut out. Thereafter, a cross-sectional photograph was taken at a magnification of 100 using an SEM. Three photographs were taken arbitrarily from different locations. The thickness of the coating film of each photograph was measured with a monosashi, and the thickness was calculated from the unit scale attached to the photograph. The maximum value and the minimum value were measured for each photograph, and the average value of the median values (n = 3) was obtained to obtain the thickness. The place where the coating film thickness was measured with a monosashi was between the multifilaments of the knitted fabric, and the film thickness of the thinnest part where the coating film floated from the filament was measured.

(Texture evaluation method)
A bag having an outer shape of 15 cm × 15 cm square was sewed with the cloth, and 5 g of white goose down composed of 90% by weight of down and 10% by weight of feather was blown in to obtain a down proof structure as an evaluation sample. The end of the bag was sewn with a lock sewing machine. The texture as a tactile sensation was sandwiched between both hands of this down proof structure and evaluated as an average value of five monitors as follows.
Very soft 5 points Soft 4 points Normal 3 points Slightly hard 2 points Hard 1 point

(Evaluation method for fluff balloons)
One down proof structure used for the above texture evaluation is operated with 4 special rubber tubes for 1 hour in accordance with JIS L 1076 A method (ICI type pilling tester), and the down proof structure is lowered from the fabric surface. And the blowing property of the feather was evaluated. The n number was 2.
Not accepted at all ○
Allowed (not noticeable) △
Remarkably recognized ×
Two samples are evaluated, and one of the two needs to have at least one Δ. If there is even one x, it is not suitable for down proofing.

Example 1
Nylon 6 polymer having a relative viscosity ηr = 3.51 was melt-spun from a die having 20 round holes at a spinning temperature of 280 ° C., drawn at a spinning speed of 2400 m / min and a drawing temperature of 160 ° C., and a strength at 10% elongation. Was 2.10 cN / dtex, and a multifilament of 22 dtex 20 filaments having an elongation of 50% was obtained. The yarn was subjected to a false false twist of a urethane disc type of a false twister ATF-V manufactured by Murata Machinery. False twisting was performed at a yarn speed of 600 m / min and a heater temperature of 180 ° C.

The finished nylon false twisted yarn had a breaking strength of 121 g, a toughness of 32.2, and a stretch recovery rate of 25%. This nylon false twisted yarn was knitted with an interlock structure by a circular knitting machine V-8ME manufactured by Fukuhara Seiki to create a raw machine. The finished raw machine was dyed under the following conditions (1) and (2), dehydrated and dried, then water-repellent, and dried and set with a tenter.
(1) Scouring: Liquid dyeing machine Neugen HC (Daiichi Kogyo Seiyaku) 1 g / liter 70 ° C. × 20 minutes (2) Dyeing Liquid dyeing machine 95 ° C. × 90 minutes Irgaran black BGL (200%) 7% owf adhesion (Color index number 107 manufactured by Bayer)
CH3 COOH 0.5 g / liter Bisnol A-30 1 g / liter (Nylon leveling agent-manufactured by Tosha)
Washing with water: Liquid dyeing machine 20 ° C x 15 minutes Soaping: Liquid dyeing machine New Soper RA-200 1g / liter (Tokai Oil, soaping agent) 70 ° C x 20 minutes Dehydration: 5 minutes (3) Water repellent finish: Asahi Guard AG-710 1% owf adhesion (Fluorine water repellent, manufactured by Meisei Chemical)
Drying 170 ° C. × 80 seconds Next, a resin liquid having the following composition was applied to one side of the knitted fabric with a knife coater so that the target application amount was 25 g / m ² , followed by 120 ° C. × 1 minute pre-drying, 150 Curing for 2 minutes was performed at 0 ° C. to obtain a coated fabric. The amount of resin adhered after curing was 14 g.
At this time, an appropriate amount of toluene was added so that the viscosity was 25,000 cps (BH type rotational viscometer).
Resin liquid composition Acrylic resin (Dai Nippon Ink Co., Ltd. Chris Coat AC80) 90 parts Silicone resin (Shin-Etsu Chemical Co., Ltd. Boron Coat E) 10 parts Catalyst (Shin-Etsu Chemical Co., Ltd. tin-based catalyst) 0.1 part Toluene Appropriate amount The coated knitted fabric was light, with a basis weight of 68 g / m ² , a thickness as thin as 0.3 mm, and a Mullen burst strength of 560 kpa. Stretch in the vertical direction is 7.1%, stretch in the horizontal direction is 45.5%, and the breathability is 0.2cc / cm ² · sec. Almost no knitted fabric was obtained. The cross section in the thickness direction of the coated knitted fabric was photographed at 100 times with a scanning electron microscope. This is shown in FIG. Table 1 shows the evaluation results of the resulting coated knitted fabric.

(Example 2)
According to Example 1, a nylon 6 polymer having a relative viscosity ηr = 3.51 was melt-spun from a die having 24 round holes at a spinning temperature of 280 ° C. and drawn at a spinning speed of 2400 m / min and a drawing temperature of 160 ° C. A multifilament of 33 dtex 24 filaments having a strength at 10% elongation of 2.10 cN / dtex and an elongation of 50% was obtained. The yarn was false twisted according to the example. The finished nylon false twisted yarn had a breaking strength of 175 g, a toughness of 31.3, and an expansion / contraction recovery rate of 18%. Similarly, this nylon false twisted yarn was knitted with an interlock structure by a circular knitting machine V-8ME manufactured by Fukuhara Seiki to create a raw machine. The finished green machine was dyed and water-repellent according to Example 1, and this knitted fabric was coated on one side as in Example 1. The finished coat knitted fabric was light, with a basis weight of 88 g / m ² , a thickness as thin as 0.33 mm, and a Mullen burst strength of 785 kpa. The stretchability in the vertical direction is 3.4%, the stretchability in the horizontal direction is 14.9%, the breathability is 0.3cc / cm ² · sec, it has a soft texture, and there is almost no fluff blowing. I was able to get a knitted fabric. The evaluation results are shown in Table 1.

(Example 3)
Polyethylene terephthalate containing 0.03 wt% of titanium oxide was melt-spun by a known method, 22 dtex 48 filament (strength 4.0 cN / dtex, elongation 36%, spinning speed 2600 m / min, draw ratio 1.85) A polyester multifilament having a boiling water shrinkage of 7% was prepared. The yarn was subjected to TMC urethane disk type friction false twisting. False twisting was performed at a yarn speed of 500 m / min and a heater temperature of 200 ° C.

The finished polyester false twisted yarn had a breaking strength of 96.2 g, a toughness of 22.8, and a stretch recovery rate of%. This polyester false twisted yarn was knitted with an interlock structure by a circular knitting machine V-8ME manufactured by Fukuhara Seiki to create a raw machine. The finished machine was refined and dyed under the following conditions, dehydrated, dried and then water-repellent, dried with a tenter, and set.
Scouring prescription: Satita processing Nonisol N 1 g / liter, Nikka Chemical Neocrystal GC1000 0.5 g / liter, soda ash 0.5 g / liter, bath ratio 1:15 95 ° C. × 30 minutes.
Dyeing prescription: Liquid dyeing machine NS type, manufactured by Nisaka Seisakusho, bath ratio 1:15 Acetic acid 0.2 g / liter pH = 4 at 130 ° C. × 45 minutes, Meisei Chemical Disper N 700 0.5 g / liter, Nikka Chemical Neo Crystal GC1000 0.5 g / liter, fluorescent dye 0.25% owf After staining, centrifugal dehydration was performed, and a water repellent was applied under the following conditions.
Water repellent finish Asahi Guard AG-710 1% owf adhesion (Fluorine-based water repellent, manufactured by Meisei Chemical Co., Ltd.) Drying 170 ° C. × 80 seconds Next, the same coating as in Example 1 was applied to one side of the knitted fabric, and the final knitted fabric Got. The finished coat knitted fabric was light, with a basis weight of 71 g / m ² , a thickness as thin as 0.27 mm, and a Mullen bursting strength of 437 kpa. The stretch property in the vertical direction is 6.5%, the stretch property in the horizontal direction is 23.8%, the air permeability is 0.7 cc / cm ² · sec, it is soft, and there is almost no blowing of fluff, which is excellent I was able to get a knitted fabric. The evaluation results are shown in Table 1.

Example 4
The same nylon 6 false-twisted yarn as in Example 1 was aligned on a knitting machine and used as 44T, and knitted with a half-stencil structure with a circular knitting machine VXC-3S manufactured by Fukuhara Seiki to create a living machine. The finished green machine was dyed and water-repellent according to Example 1, and this knitted fabric was coated on one side as in Example 1.

The finished coat knitted fabric was light, with a basis weight of 85 g / m ² , a thickness as thin as 0.28 mm, and a Mullen bursting strength of 960 kpa. The stretchability in the vertical direction is 2.7%, the stretchability in the horizontal direction is 13.6%, the breathability is 0.7cc / cm ² · sec, it is soft, and there is almost no fluff blowing. I was able to get a knitted fabric. The evaluation results are shown in Table 1.

(Example 5)
The same nylon 6 false twisted yarn as in Example 1 was used and knitted with a half structure by a KARL MAYER tricot machine KE3 to prepare a raw machine. The finished green machine was dyed and water-repellent according to Example 1, and this knitted fabric was coated on one side as in Example 1.

The finished coat knitted fabric was as light as 65 g / m ² , had a thickness as thin as 0.4 mm, and had a mullen burst strength of 530 kpa. The stretch property in the vertical direction is 2.2%, the stretch property in the horizontal direction is 12.4%, the air permeability is 0.9 cc / cm ² · sec, it is soft, and there is almost no blowing of fluff. I was able to get a knitted fabric. The evaluation results are shown in Table 1.

(Example 6)
According to Example 1, a nylon 66 polymer having a relative viscosity ηr = 3.0 was melt-spun from a die having 20 round holes at a spinning temperature of 290 ° C. to obtain a semi-drawn yarn at a spinning speed of 3600 m / min. The strip was false twisted. The finished nylon 66 false twisted yarn had a breaking strength of 91.6 g, a toughness of 320.7, and a stretch recovery rate of 23.1%. Similarly, this nylon false twisted yarn was knitted with an interlock structure by a circular knitting machine V-8ME manufactured by Fukuhara Seiki to create a raw machine. The finished green machine was dyed and water-repellent according to Example 1, and this knitted fabric was coated on one side as in Example 1. The finished coat knitted fabric was light, with a basis weight of 67 g / m ² , a thickness as thin as 0.32 mm, and a Mullen bursting strength of 489 kpa. The stretch property in the vertical direction is 6.5%, the stretch property in the horizontal direction is 44.5%, the breathability is 0.9cc / cm ² · sec, it is soft, and there is almost no blowing of fluff, which is excellent I was able to get a knitted fabric. The evaluation results are shown in Table 1.

(Comparative Example 1)
Knitting with interlock structure by Fukuhara Seiki circular knitting machine 4AL-28 gauge using polyester false twisted yarn 84 dtex / 72 filament false twisted polyethylene terephthalate containing 0.03 wt% of titanium oxide I got the ground. The obtained knitted fabric was dyed according to Example 3, and similarly coated as in Example 3 to obtain a final knitted fabric.

The finished coat knitted fabric was heavy with a basis weight of 200 g / m ² , a thickness of 0.69 mm, and a mullen burst strength of 880 kpa. The stretchability in the vertical direction was 5.8%, the stretchability in the horizontal direction was 56%, and the air permeability was 0.2 cc / cm ² · sec. There was almost no fluff blowing, but the texture was hard. The evaluation results are shown in Table 1.

(Comparative Example 2)
Polyester false twisted yarn obtained by false twisting of polyethylene terephthalate half-stretched yarn containing 0.03 wt% of titanium oxide 56 knits / 24 filaments and knitting with interlock structure on Fukuhara Seiki circular knitting machine 4AL-28 gauge I got the ground. The obtained knitted fabric was dyed according to Example 3, and similarly coated as in Example 3 to obtain a final knitted fabric. The finished coated knitted fabric had a basis weight of 120 g / m ² , a thickness of 0.45 mm, and a mullen burst strength of 720 kpa. The stretch property in the vertical direction was 3.3%, the stretch property in the horizontal direction was 12.5%, and the air permeability was 1 cc / cm ² · sec. There was almost no fluff blowing, but the texture was hard. The evaluation results are shown in Table 1.

(Comparative Example 3)
After obtaining a knitted fabric according to Example 1, it was evaluated without a resin coating on the back of the fabric.
The finished knitted fabric was as light as 65 g / m ² , had a thickness as thin as 0.29 mm, and had a mullen burst strength of 610 kpa. The stretchability in the vertical direction is 9.6%, the stretchability in the horizontal direction is 56.5%, and the texture is very soft and good, but the breathability is 135cc / cm ² · sec, and the fluff is blown out Severely, the fabric was unsuitable for feathered clothing. The evaluation results are shown in Table 1.

(Comparative Example 4)
After obtaining a knitted fabric according to Example 1, a nonporous urethane resin film was laminated on the back of the fabric. The finished laminate knitted fabric had a basis weight of 81 g / m ² , a thin thickness of 0.27 mm, and a Mullen burst strength of 560 kpa. The stretchability in the vertical direction is 2.6%, the stretchability in the horizontal direction is 16.2%, and the air permeability is 0cc / cm ² · sec. The fluff is not blown out at all, but the texture is not good. The fabric was inappropriate for clothing. The evaluation results are shown in Table 1.

(Comparative Example 5)
Nylon 6 polymer having a relative viscosity ηr = 3.51 was melt-spun from a die having 12 round holes at a spinning temperature of 280 ° C., drawn at a spinning speed of 2400 m / min and a drawing temperature of 160 ° C., and a strength at 10% elongation. A multifilament of 17 dtex 12 filaments with a 2.10 cN / dtex and an elongation of 50% was obtained. After obtaining a knitted fabric with a half structure with a tricot knitting machine according to Example 5, the back of the fabric was resin-coated according to Example 5. The finished coat knitted fabric had a weight per unit area of 58 g / m ² , a thickness as thin as 0.2 mm, and a Mullen burst strength of 445 kpa. The stretchability in the vertical direction was 2.6%, the stretchability in the horizontal direction was 10.8%, and the air permeability was 2.2 cc / cm ² · sec. There was a puff of fluff, the texture was not good, and the fabric was inappropriate for clothing with feathers. The evaluation results are shown in Table 1.

(Comparative Example 6)
A nylon 6 polymer having a relative viscosity ηr = 2.70 was melt-spun from a die having 34 round holes at a spinning temperature of 280 ° C. and drawn at a spinning speed of 2400 m / min and a drawing temperature of 160 ° C. A filament was obtained. The yarn was subjected to a false false twist of a urethane disc type of a false twister ATF-V manufactured by Murata Machinery. False twisting was performed at a yarn speed of 600 m / min and a heater temperature of 180 ° C. The finished nylon false twisted yarn 44T / 34f had a breaking strength of 192 g, a toughness of 24.8, and an expansion / contraction recovery rate of 18%. This nylon false-twisted yarn was knitted with a tengu with a circular knitting machine VXC-3S manufactured by Fukuhara Seiki to create a raw machine. The finished raw machine was dyed under the same conditions as in Example 1, dehydrated and dried, water-repellent processed, dried with a tenter, and set. Next, a release cloth in which a calendar smoothing treatment and a water repellent treatment were previously applied to polyester taffeta was prepared, and a polyurethane solution was coated on the release cloth with a knife coater so as to have an application amount of 150 g / m ² . Next, the polyurethane coating solution was wet-solidified by immersing it in an aqueous bath containing 10% by weight of dimethylformamide at 30 ° C. for 3 minutes in a solidified layer, followed by 80 ° C. hot water washing for 10 minutes, followed by hot air drying, A polyurethane microporous coating was obtained on the release cloth. On this polyurethane microporous film, 100 parts by weight of a polyester urethane resin (active ingredient 70% by weight), 15 parts by weight of an adduct of trimethylolpropane-toluylene diisocyanate (molar ratio 1: 3) and 5 parts by weight of a crosslinking accelerator 35 g / m ^{2 of} an adhesive solution dissolved in 60 parts by weight of xylol was applied using a gravure roll engraved in a 30-mesh grid and dried in hot air at 100 ° C. The above-mentioned top plate is bonded to this adhesive-coated surface in a tension-free state, lightly niped with a mangle, treated with hot air at 100 ° C. for 10 minutes, aged at 40 ° C. for 24 hours, and then the release cloth is released. To obtain a laminated fabric in which a microporous film is laminated on the above-mentioned tengu. The finished laminate knitted fabric was heavy with a basis weight of 117 g / m ² , a thickness of 0.33 mm, and a mullen burst strength of 440 kpa. Stretch in the vertical direction is 1.8%, stretch in the horizontal direction is 15%, the breathability is 0.0cc / cm ² · sec, and there is almost no fluff blowing, but the texture is hard It became the ground. The evaluation results are shown in Table 1.

  Since the coated knitted fabric of the present invention is thin and light and has stretchability, it also has wind resistance, and therefore can be suitably used for windbreakers for sports clothing, jackets with batting, ski wear, and the like. Furthermore, in addition to the above-mentioned characteristics, it is possible to suppress down-blowing, so that it is also suitable for down jackets, sleeping bags, duvets, and the like. In addition, because of its unprecedented waterproofness, thinness, and lightness, it can be used widely as a waterproof sheet not only for clothing and daily life but also for surgery and industrial materials.

Claims (8)

A knitted fabric knitted from synthetic fiber false twisted yarn with a total fineness of 80 dtex or less and a single yarn fineness of 1.4 dtex or less, and one side of the knitted fabric is coated with a resin by dry coating. land category with is not more 90 g / ^{m 2} or less, the resin coat amount / pair knitted (%) 28.1% less, the air permeability is 0.2~1.2 ^{cm 3} / cm 2 · sec Stretch coat knitted fabric for batting products.   The stretch coat knitted fabric for batting articles according to claim 1, wherein the knitted fabric is knitted with a knitting machine gauge of 32 or more. The stretch coat knitted fabric for batting products according to claim 1 or 2, wherein the synthetic fiber false twisted yarn is a nylon false twisted yarn having a total fineness of 45 dtex or less and satisfies the following yarn physical properties.
A: Breaking strength (DS) is 80 cN or more,
B: Toughness [DT√ (DE)] is 25 or more,
DT: Breaking strength (cN / dtex)
DE: Elongation at break (%)   The stretch coat knitted fabric for articles with batting according to any one of claims 1 to 3, wherein the knitted fabric has a circular knitted interlock structure.   The stretch coat knitted fabric for batting articles according to any one of claims 1 to 4, wherein the stretch stretch of the stretch coat knitted fabric is 5% or more and the horizontal stretch is 20% or more.   The stretch coat knitted fabric for articles containing batting according to any one of claims 1 to 5, wherein the amount of the resin coat of the stretch coat knitted fabric is 0.5 to 20.0% based on the weight of the knitted fabric.   The stretch coat knitted fabric for batting articles according to any one of claims 1 to 6, wherein the resin contains 50 mass% or more of an acrylic acid polymer component.   The stretch coat knitted fabric for batting articles according to any one of claims 1 to 7, wherein the stretch coat knitted fabric has a Mullen bursting strength of 400 kPa or more.