Knitted fabric and garment

Abstract

A knitted fabric having a double structure with face yarns, back yarns, and binding yarns is provided, wherein the binding yarns are polyester crimped yarns having two or more types of polyester-based polymers including at least a polybutylene terephthalate-based polymer, the knitted fabric and garments made therefrom being excellent in moderate heat retention and contact cooling sensation as well as stiffness, and, depending on the embodiment, also excellent in stretchability, moisture-absorbing quick-drying properties, and pilling resistance.

Description

Knitted fabrics and garments

[0001] This invention relates to knitted fabrics and clothing.

[0002] Conventionally, bulky knitted fabrics have been proposed to obtain heat retention. For example, a knitted fabric has been proposed that consists of an inner layer, an outer layer, and a connecting yarn, and further improves heat retention by using hollow yarn for the connecting yarn (see, for example, Patent Document 1). In addition, a double-knit fabric has been proposed in which the front and back are made of spun yarn and elastic yarn is made of a plating layer, resulting in a lightweight and stretchable fabric (see, for example, Patent Document 2).

[0003] Japanese Patent Publication No. 2018-21267, Japanese Patent Publication No. 7162758

[0004] On the other hand, in recent years, even in winter, people are spending more time in heated rooms or after bathing, and it is considered necessary for winter clothing to have a cooling effect when worn. However, even though improvements were seen in heat retention and heat shielding properties, the knitted fabric described in Patent Document 1 could not solve this problem. The same was true for Patent Document 2, and furthermore, because the bonding yarn was an elastic yarn, the knitted fabric lacked firmness and tended to feel hot, and the cooling effect on contact was also reduced in some cases.

[0005] This disclosure is made in view of the above, and aims to obtain knitted fabrics and garments that have excellent moderate heat retention and contact cooling properties, as well as excellent firmness.

[0006] In view of the above-mentioned problems, the present invention has the following configuration: (1) A knitted fabric with a double structure having at least a face yarn, a back yarn, and a bonding yarn, wherein the bonding yarn is a polyester crimped yarn having at least two or more polyester polymers including a polybutylene terephthalate polymer. (2) The knitted fabric according to (1) above, wherein the face yarn includes a spun yarn. (3) The knitted fabric according to (1) or (2) above, wherein the face yarn includes a cellulose fiber. (4) The knitted fabric according to any one of (1) to (3) above, wherein the face yarn includes a polyester fiber, and the single fiber fineness of the polyester fiber is 1.3 dtex or less. (5) The qmax specified in JIS L 1927 (2020) Contact Cooling Sensitivity Evaluation Method is 0.100 W / cm ２The knitted fabric described in any of (1) to (4) above. (6) The knitted fabric described in any of (1) to (5) above, wherein the dropping method specified in JIS L 1907 (2010) 7.1.1 after 10 washes as specified in JIS L 1930 (2014) C4N is 3 seconds or less. (7) The knitted fabric described in any of (1) to (6) above, wherein the diffusible residual moisture content after 10 washes as specified in JIS L 1930 (2014) C4N is 30% or less 1 hour after water dropping. (8) The basis weight is 180 to 300 g / m ２ (1) to (2) above, the knitted fabric as described in any of (1) to (2). (9) The knitted fabric as described in any of (1) to (2) above, wherein the polyester crimped yarn comprises a polyethylene terephthalate polymer and a polybutylene terephthalate polymer. (10) The knitted fabric as described in any of (1) to (2) above, wherein the double structure is a double knit fabric, the surface and the back surface are jersey knit, and the surface and the back surface are connected by the bonding yarn. (11) The knitted fabric as described in any of (1) to (2) above, wherein the back yarn comprises a polyester processed yarn. (12) The knitted fabric as described in any of (1) to (2) above, wherein at least one of the surface yarn and the back yarn comprises a polyurethane fiber. (13) Clothing comprising at least a portion of the knitted fabric as described in any of (1) to (2) above.

[0007] According to this disclosure, it is possible to provide knitted fabrics and garments that have excellent moderate heat retention and contact cooling properties, as well as excellent firmness, and depending on the embodiment, also have excellent stretchability, water absorption and quick drying properties, pilling resistance, etc.

[0008] Figure 1 is an organizational chart illustrating an example of a knitted fabric in this disclosure.

[0009] The knitted fabric in this disclosure is a double-structured knitted fabric having at least face yarn, back yarn, and bonding yarn. In this disclosure, yarn that mainly forms loops on the surface is referred to as face yarn, and yarn that mainly forms loops on the back is referred to as back yarn. Also, for convenience, one side of the knitted fabric is referred to as the surface, and the opposite side is referred to as the back. This does not suggest that the surface of the knitted fabric is used on the front side of the product, but as will be described later, if it is used for clothing, for example, it is preferable to use the back side on the skin side. That is, when it is made into clothing, the back side can mainly be the skin side. By making the knitted fabric a double structure, in addition to moderate heat retention, the characteristics of the face yarn and back yarn allow each side to exhibit functionality and physical properties. The double structure is not particularly limited, and any double structure that includes knitted fabric is acceptable, including double structures with woven fabric, but it is preferable that both the surface and back are knitted fabric in order to have excellent heat retention. Among double structures, double knitted fabric is preferred. Examples of double knits include double rib knit, interlock knit, and jacquard double knit, but are not particularly limited. Among these, interlock knit is preferred, and it is even more preferable that the surface and back are jersey knit and connected by a bonding yarn. By creating such a so-called "cardboard" structure, it is possible to create a knitted fabric that not only has excellent heat retention but also excellent skin separation and a cool feeling upon contact. In this disclosure, the bonding yarn refers to the yarn that connects the surface and back of the double structure. As explained using Figure 1, a double knit in which the face yarn 2 and back yarn 3 are connected by a bonding yarn 1 can be used as an example.

[0010] In this disclosure, the face yarn preferably includes spun yarn because it can provide space between the fibers of the spun yarn, resulting in a greater feeling of warmth. Other yarns, such as filament yarn, may also be included, but it is preferable that the spun yarn constitutes 50% by mass or more of the face yarn, and more preferably 80% by mass or more. The upper limit is 100% by mass.

[0011] Furthermore, it is preferable that the face yarn contains cellulose fibers, as this results in better pilling resistance. Cellulose fibers are not particularly limited, but examples include plant fibers such as cotton, linen, and hemp; regenerated fibers containing long filaments such as rayon and cupro; and semi-synthetic fibers such as acetate. Cotton is preferred among these. The face yarn may contain fibers other than cellulose fibers, but it is preferable that 10% by mass or more of the face yarn be cellulose fibers, more preferably 15% by mass or more, and even more preferably 30% by mass or more.

[0012] The face yarn preferably contains synthetic fibers for superior quick-drying properties. The synthetic fibers preferably include polyester fibers such as polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, and copolymers thereof, for superior quick-drying properties. The face yarn containing both cellulose fibers and synthetic fibers is preferable for moderately improving pilling resistance and quick-drying properties. In this case, spun yarn is more preferable, and even more preferable is a spun yarn made by blending synthetic polyester fibers with cellulose fibers. In the face yarn, polyester fibers can further improve quick-drying properties, while cellulose fibers can improve pilling resistance. Considering the balance between pilling resistance and improved quick-drying properties, the mass ratio of polyester fibers to cellulose fibers in the spun yarn is preferably polyester fibers:cellulose fibers = 60:40 to 90:10, and more preferably 70:30 to 85:15. While the spun yarn is not particularly limited, it is preferable to use a knotted spun yarn from the viewpoint of pilling resistance. Furthermore, the face yarn may contain fibers other than the synthetic fibers and cellulose fibers mentioned above, and further containing polyurethane fibers is preferable because it improves stretchability.

[0013] When the face yarn contains polyester fibers, the single fiber fineness is preferably 1.3 dtex or less, and more preferably 1.1 dtex or less, from the viewpoint of texture. When the single fiber fineness is within the above range, a smoother surface and a better texture can be obtained. The lower limit is not particularly limited, but it is preferably 0.5 dtex or more, and more preferably 0.8 dtex or more, from the viewpoint of strength and spinnability.

[0014] The bonding yarn is a polyester crimped yarn having two or more polyester polymers, including at least a polybutylene terephthalate polymer. The double-structured knitted fabric has voids due to the bonding yarn, which provides excellent heat retention. However, sweat and moisture tend to accumulate in these voids, which can impair the cool-to-the-touch properties. Furthermore, there is a concern that the moisture will cool and reduce heat retention. In this disclosure, by using polyester crimped yarn for the bonding yarn, quick-drying properties can be improved, and both heat retention and cool-to-the-touch properties can be improved. Furthermore, by using polyester crimped yarn, the firmness is improved, making it less likely to feel hot.

[0015] The structure of crimped yarn is not particularly limited, but examples include composite fibers such as side-by-side type composite fibers and eccentric core-sheath type composite fibers, and false-twist crimped yarns with enhanced crimping due to pin false-twist processing.

[0016] In the knitted fabric of this disclosure, the polyester crimped yarn preferably contains at least two types of polyester polymers, as this allows for improved water absorption and quick drying properties due to structural differences caused by fine crimping, and also tends to have excellent firmness. The other components of the two or more polyester polymers are not particularly limited, as long as the polyester contains at least a polybutylene terephthalate polymer. Here, the polybutylene terephthalate polymer includes polybutylene terephthalate and its copolymers. The two or more polyester polymers are not particularly limited as long as they are chemically or physically different types, for example, types with different chemical structures, molecular weights, viscosities, etc. Examples of polyester polymers with chemical structures different from polybutylene terephthalate polymers include polyethylene terephthalate, polytrimethylene terephthalate, and copolymers thereof. As for the combination of the two types, a polyethylene terephthalate polymer and a polybutylene terephthalate polymer are preferred in terms of improving firmness, but other components may also be included. Here, the polyethylene terephthalate polymer includes polyethylene terephthalate and its copolymers, and the polybutylene terephthalate polymer includes polybutylene terephthalate and its copolymers. For example, in the case of composite yarn, a combination of yarn made from polyethylene terephthalate or its copolymer and yarn made from polybutylene terephthalate or its copolymer mixed by blending, entanglement, twisting, etc. is preferred. In the case of composite fiber, a composite fiber is preferred in which a component made from polyethylene terephthalate or its copolymer and a component made from polybutylene terephthalate or its copolymer are combined in a form such as a side-by-side type or an eccentric core sheath type.Of these, the polyester crimped yarns used in this disclosure are preferably side-by-side composite fibers or eccentric core-sheath composite fibers, which offer good firmness, water absorption due to fine crimping, and quick-drying properties. More preferably, side-by-side composite fibers or eccentric core-sheath composite fibers are made of polyethylene terephthalate or a copolymer thereof and polybutylene terephthalate or a copolymer thereof. Even more preferably, side-by-side composite fibers or eccentric core-sheath composite fibers are made of polyethylene terephthalate and polybutylene terephthalate. The bonding yarn is a polyester crimped yarn containing at least polybutylene terephthalate, and elastic yarns such as polyurethane fibers may be plated onto the front and back yarns.

[0017] Furthermore, while the form of the backing yarn is not particularly limited, long fibers are preferred. The material is also preferably polyester fiber, such as polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, and copolymers thereof. Long polyester fibers are preferred because they tend to have less fluff, thus improving contact coolness. In this disclosure, the backing yarn is preferably long fiber, more preferably polyester processed yarn, and even more preferably polyester processed yarn, as this can further improve heat retention and contact coolness. Further inclusion of polyurethane fibers in the backing yarn is also preferred because it improves stretchability. In this disclosure, polyurethane fibers are preferably included in at least one of the face yarn and the backing yarn, and more preferably in both, due to their excellent stretchability.

[0018] When the backing yarn contains polyester fibers, the single fiber fineness is preferably 1.3 dtex or less, and more preferably 1.1 dtex or less, from the viewpoint of coolness upon contact. If the single fiber fineness is within the above range, the coolness upon contact is further improved. The lower limit is not particularly limited, but 0.5 dtex or more is preferred in terms of strength and pilling resistance. In addition, the cross-sectional shape of the backing yarn may be round or irregular.

[0019] The knitted fabric described herein has a qmax of 0.100 W / cm² as defined in JIS L 1927 (2020) Method for Evaluating Contact Cooling Properties. ２Preferably, the level is 0.120 W / cm² or higher. ２ It is preferable that the value is greater than or equal to the above range. A value greater than the above range allows for a greater feeling of separation from the skin. The upper limit is not particularly limited and can be adjusted as appropriate depending on the application, but for winter clothing, 0.200 W / cm² is recommended. ２The following is preferable. Furthermore, it is preferable that the drying time after 10 washes using the dropping method specified in JIS L 1907 (2010) 7.1.1 be 3 seconds or less, and more preferably 2 seconds or less. If it is below the above range, the time that moisture is in contact with the skin is shortened, resulting in a better feel against the skin. The lower limit is not particularly limited, and the shorter the better. Furthermore, the diffusible residual moisture content after 1 hour following 10 washes is preferably 30% or less, and more preferably 20% or less. If it is 30% or less, it dries quickly, the fabric does not stick to the skin easily, and it feels fresher with better skin separation. The lower limit is not particularly limited, and it is 0% or more. Here, washing is the method specified in JIS L 1930 (2014) C4N, and after 10 washes means after repeating this method 10 times. To increase qmax in the contact cooling evaluation method, examples include using long fibers for the yarn, increasing the proportion of synthetic fibers such as polyester, and shortening the loop length of the knit to make it smoother. Of these, the loop length is not particularly limited, but shortening it is preferable as it yields better contact cooling. To shorten the time of the water absorption drop method, examples include increasing the proportion of cellulose fibers, making the crimp of the polyester crimp yarn finer, using crimp yarn containing at least two types of polyester polymers, and adding a water-absorbing agent with wash durability during the dyeing process. Furthermore, to reduce the diffusible residual moisture content, examples include increasing the proportion of polyester crimp yarn, making the crimp of the polyester crimp yarn finer, using crimp yarn containing at least two types of polyester polymers, and reducing the basis weight. In the knitted fabric of this disclosure, by simultaneously setting the qmax in the contact cooling evaluation method, the time in the water absorption drop method, and the diffusible residual moisture content within the above range, the fabric's ability to separate from the skin is further improved, resulting in a more refreshing wearing experience. The qmax in the contact cooling evaluation method, the water absorption drop method, and the diffusible residual moisture content are the values ​​obtained by the method described in the examples. Here, it is preferable that in each of the above measurements, the value on at least one side of the knitted fabric is within the range of this disclosure. It is even more preferable that the measured value on either the front or back side is within the range of this disclosure.Further, when a knitted fabric is used as a garment and the back side serving as the skin side is determined, it is more preferable that the above measured value on the back side falls within the scope of the present disclosure.

[0020] Further, the knitted fabric of the present disclosure has a basis weight of 180 to 300 g / m ２ , which is preferable. The basis weight is preferably 180 g / m ２ or more, more preferably 200 g / m ２ or more. When the basis weight is not less than the above range, heat retention and firmness are improved. Further, it is preferably 300 g / m ２ or less, more preferably 250 g / m ２ or less. When the basis weight is not more than the above range, a texture with more excellent flexibility can be obtained.

[0021] Further, in terms of firmness, the drape coefficient specified in JIS L 1096 8.21.7 Method G (2020) is preferably 0.30 or more, more preferably 0.40 or more. The upper limit is not particularly limited, and is 1.0. The polyester crimped yarn can impart firmness to the fabric, thereby increasing the drape coefficient. To further increase the drape coefficient, in addition to increasing the fineness of the binding yarn, increasing the yarn density of the fabric, and selecting a polyester crimped yarn with a high elastic recovery rate (CR value) and a high boiling water shrinkage rate are also preferred embodiments. In the present disclosure, the preferred elastic recovery rate (CR value) of the polyester crimped yarn is 30% or more, and the boiling water shrinkage rate is 4% or more.

[0022] The garment of the present disclosure includes the knitted fabric of the present disclosure in at least a part thereof. Since the knitted fabric of the present disclosure has excellent cool contact feeling and water absorption and quick-drying properties even in winter, it is particularly suitable mainly for outerwear, especially winter outerwear. The garment is not particularly limited, and examples thereof include sweatshirts and pajamas.

[0023] Next, an example of a method for manufacturing knitted fabric according to this disclosure will be described. As a method for manufacturing face yarn, a spun yarn containing cellulosic fibers, which is a preferred embodiment in this disclosure, will be described as an example. The method for manufacturing a spun yarn containing cellulosic fibers is not particularly limited and conventionally known methods can be used, but for example, after going through processes such as batting, carding, and drawing, the fibers can be bundled into a sliver and then spun into yarn using "MVS" (registered trademark, Murata Vortex Spinner, manufactured by Murata Machinery, Ltd.). Furthermore, as a method for manufacturing back yarn, a polyester processed yarn, which is a preferred embodiment in this disclosure, will be described as an example. The method for manufacturing polyester processed yarn is not particularly limited and can be manufactured by false-twisting raw silk. Furthermore, the method for manufacturing bonding yarn is not particularly limited, and for example, conventionally known manufacturing methods can be applied even when using composite fibers.

[0024] Using the yarn obtained as described above, a double-structured knitted fabric is prepared. Examples of knitting machines include double rib knit, interlock knit, and jacquard double knit, but these are not particularly limited.

[0025] The resulting knitted fabric can be dyed and processed as needed.

[0026] The present disclosure will be explained in more detail by the following examples, but will not be limited thereto. The evaluation in the above-described embodiments and the examples and comparative examples described later was carried out by the following methods.

[0027] (Washing) Washing was carried out in accordance with JIS L 1930 (2014) C4N method. Note that "after 10 washes" mentioned later refers to the time after repeating this method 10 times.

[0028] (Water Absorption) Measurements were taken in accordance with JIS L 1907 (2010) 7.1.1 Dropping Method. A water absorption rate of 3 seconds or less was considered good, and a water absorption rate of 1 second was considered very good. The measurements were taken after 10 washes (HL10). This test was performed on both the front and back sides, and the water absorption value for the back side is recorded.

[0029] (Diffusible Residual Moisture Content) This was measured at the Kaken Test Center, a general incorporated foundation. Specifically, the mass (W) of a randomly selected 10 cm x 10 cm test piece was measured, 0.3 mL of water was dropped onto the test piece, and the mass (W0) was measured. The test piece was hung to dry under standard conditions (20°C, 65% RH), and the mass (Wt) was measured at predetermined intervals to calculate the residual moisture content (%) at each interval. From the obtained results, the residual moisture content (%) after 1 hour was calculated, and it was judged that it was quick-drying if it was 30% or less. The measurement was performed on both the front and back of a sample after 10 washes (HL10). The value for the back side is listed as the diffusible residual moisture content. Diffusible residual moisture content = {(Wt - W) / (W0 - W)} × 100.

[0030] (Contact Cooling Properties) qmax was measured using a Thermolab II manufactured by Kato Tech Co., Ltd. under measurement conditions compliant with JIS L 1927 (2020). The fabric, pre-conditioned to an ambient temperature and humidity of 20°C and 65% RH, was placed on an insulating material with the reverse side (skin-facing side) facing upwards. A 30°C heated hot plate / temperature sensor was brought into contact with the skin-facing side of the fabric to measure the instantaneous maximum heat transfer qmax (unit: W / cm²). ２ ) was measured.

[0031] (Heat retention CLO value) A sample that has been thoroughly humidified in an environment of 20°C and 65% RH is subjected to a test on an area S (m²) set to a temperature of 40±0.1°C. ２ The test fabric is placed on a hot plate (S(m²)) and, after 1 minute, in a stable state, the amount of heat lost from the hot plate through the test fabric into the environment is measured over the hot plate area (S(m²)). ２ The heat loss was calculated from the (heat) and power consumption (E (W)). At this time, in order to prevent heat dissipation due to convection from the heating plate, the area around the heating plate was covered with a resin case with an opening at the top to create a windless environment. The value of heat loss obtained in the above experiment is converted to the CLO value by the following formula: CLO value = (1 / 0.155) × (20 × S / E) This CLO value is a commonly used index to indicate the heat retention of fabric, and a larger value indicates better heat retention.

[0032] (Pilling resistance) Measured according to JIS L 1076 (2012) Method A (8.1.1 Knitted fabric 5H). This test was performed on both the front and back sides.

[0033] (Drape Coefficient) Measurement was performed in accordance with Method G of JIS L 1096 8.21.7 (2020). This test was conducted on each of the front and back sides, and the larger numerical value was taken as the value of the drape coefficient in the present disclosure.

[0034] (Firmness) In clothing, a material with firmness maintains the three-dimensional shape of the garment without deformation. Conversely, a material without firmness conforms to the body line when worn. According to sensory evaluation performed by five skilled panelists, a sample with no firmness at all was rated as 1, a sample with slight firmness was rated as 2, a sample with moderate firmness was rated as 3, a sample with firmness was rated as 4, and a sample with high firmness was rated as 5.

[0035] [Example 1] A swirl air-jet twistless bound spun yarn consisting of 70% polyethylene terephthalate and 30% cotton as face yarn, wherein the single fiber fineness of the polyethylene terephthalate is 1.0 dtex, and the thickness of the spun yarn is 40 count (hereinafter sometimes referred to as "40S"), a side-by-side composite fiber of polyethylene terephthalate and polybutylene terephthalate (PET / PBT) of 60 dtex 8 filaments as binding yarn, and a textured polyethylene terephthalate filament yarn of 83 dtex 72 filaments as back yarn were prepared. Then, using these yarns, a double knit knitted fabric having the same structure as that in Fig. 1, with the front side and back side both having a plain jersey structure and the front side and back side connected by the binding yarn, was knitted according to a conventional method. Thereafter, according to a conventional method, after enzymatic treatment, scouring, and dyeing with a disperse dye and a reactive dye to obtain a black color, the fabric was treated with a cotton fixing agent and dried by a tenter. Subsequently, after being immersed in a processing liquid containing a water absorbing agent and a softening agent, the fabric was pressed by a mangle machine and dried at 130 to 150°C. The basis weight is 225 g / m ２ and finished. The knitted fabric thus obtained was superior in firmness to the knitted fabric of Comparative Example 1 which did not use a crimped polyester fiber as the binding yarn, was superior in quick-drying property to the knitted fabric of Example 3 having a high cotton ratio, and was superior in pilling resistance to the structure of Example 4 obtained using a spun yarn containing only polyethylene terephthalate as the face yarn. The evaluation results are shown in Table 1.

[0036] [Example 2] A knitted fabric was obtained in the same manner as in Example 1, except that polyurethane fibers were inserted in a plating form into the face yarn and back yarn. The basis weight is 285 g / m ２finished by the above method. Although the knitted fabric obtained in this way had a slightly inferior drape coefficient than that of Example 1, excellent cool contact feeling, heat retention and firmness were obtained in the same manner as in Example 1. In addition, results such as excellent water absorption, quick drying property and pilling resistance were also obtained. The evaluation results are shown in Table 1.

[0037] [Example 3] A knitted fabric was obtained by performing the same knitting, formulation, dyeing and finishing processes as in Example 1, except that the face yarn was changed to a compact spun yarn made of 100% cotton with a spun yarn thickness of 40S. The basis weight was 240 g / m ２ finished by the above method. Compared with Example 1, the cotton blending ratio increased and the quick drying property tended to be inferior. The evaluation results are shown in Table 1.

[0038] [Example 4] A knitted fabric was obtained by performing the same knitting, formulation, dyeing and finishing processes as in Example 1, except that the face yarn was changed to a compact spun yarn made of 100% polyethylene terephthalate, with a single fiber fineness of polyethylene terephthalate of 1.0 dtex and a spun yarn thickness of 40S. The basis weight was 230 g / m ２ finished by the above method. The surface pilling resistance tended to be inferior. The evaluation results are shown in Table 1.

[0039] [Comparative Example 1] A knitted fabric was obtained by performing the same knitting, formulation, dyeing and finishing processes as in Example 1, except that the binding yarn was changed to a polyurethane fiber with a total fineness of 77 dtex. The basis weight was 240 g / m ２ finished by the above method. Compared with Example 1, the drape property was higher and the firmness was inferior. The evaluation results are shown in Table 1.

[0040] [Comparative Example 2] A knitted fabric was obtained by performing the same knitting, formulation, dyeing and finishing processes as in Example 1, except that the binding yarn was changed to a polyurethane fiber with a total fineness of 77 dtex, and the back yarn was changed to a vortex twistless bound spun yarn that was the same as the face yarn, consisting of 70% polyethylene terephthalate and 30% cotton, with a single fiber fineness of polyethylene terephthalate of 1.0 dtex and a spun yarn thickness of 40S. The basis weight was 260 g / m ２ finished by the above method. The cool contact feeling was low, the drape property was high, and the firmness tended to be inferior. The evaluation results are shown in Table 1.

[0041] [Comparative Example 3] Using the same swirling airflow-free twist-bound spun yarn as the face yarn, consisting of 70% polyethylene terephthalate, 30% cotton, a polyethylene terephthalate single fiber fineness of 1.0 dtex, and a spun yarn thickness of 40S, the knitting, formulation, dyeing, and finishing processes were the same as in Example 1, except that the structure was changed to plain knit (single knit), to obtain a knitted fabric. The basis weight was 120 g / m ２ The material was finished using the method described above. The basis weight was low, and the heat retention tended to be poor. The evaluation results are shown in Table 1. In addition, water absorption, diffusible residual moisture content, and contact cooling properties were also measured on the surface, but none of the three items simultaneously fell within the preferred range of this disclosure in Comparative Examples 1 to 3.

[0042]

[0043] 1. Bonding thread 2. Front thread 3. Back thread

Claims

1. A knitted fabric with a double structure having at least face yarn, back yarn, and bonding yarn, wherein the bonding yarn is a polyester crimped yarn having at least two or more polyester polymers including a polybutylene terephthalate polymer.

2. The knitted fabric according to claim 1, wherein the surface yarn includes spun yarn.

3. The knitted fabric according to claim 1 or 2, wherein the surface yarn contains cellulose fibers.

4. The knitted fabric according to claim 1 or 2, wherein the surface yarn contains polyester fibers, and the single fiber fineness of the polyester fibers is 1.3 dtex or less.

5. The knitted fabric according to claim 1 or 2, wherein the surface yarn comprises cellulose fibers and polyester fibers, and the single fiber fineness of the polyester fibers is 1.3 dtex or less.

6. The qmax specified in JIS L 1927 (2020) Method for Evaluating Contact Cooling Sensitivity is 0.100 W / cm². ２ The knitted fabric according to claim 1 or 2, wherein, after 10 washes as defined in JIS L 1930 (2014) C4N, the dropping method as defined in JIS L 1907 (2010) 7.1.1 is 3 seconds or less, and the diffusible residual moisture content is 30% or less 1 hour after water dropping.

7. Weight: 180-300 g / m ２ The knitted fabric according to claim 1 or 2.

8. The knitted fabric according to claim 1 or 2, wherein the polyester crimped yarn comprises a polyethylene terephthalate polymer and a polybutylene terephthalate polymer.

9. The knitted fabric according to claim 1 or 2, wherein the double structure is a double knit fabric, the front and back surfaces are jersey knit, and the front and back surfaces are connected by the connecting yarn.

10. The knitted fabric according to claim 1 or 2, wherein the backing yarn includes a polyester processed yarn.

11. The knitted fabric according to claim 1 or 2, wherein at least one of the face yarn and the back yarn contains polyurethane fibers.

12. A garment comprising at least a portion of the knitted fabric described in claim 1 or 2.

Images