Multi-layered braided attachment

Abstract

The object of the present invention is to provide a multi-knitted attachment that has superior heat retention properties compared to conventional multi-knitted attachments. The multi-knitted attachment 100 according to the present invention comprises at least one first knitted layer OL and at least one second knitted layer IL. The first knitted layer includes a first bulky region RP. The first bulky region consists of a first bulky knitted fabric. The first bulky knitted fabric has a first bulky portion PB. The second knitted layer includes a second partial bulky region. The second partial bulky region consists of a second partial bulky knitted fabric. The second partial bulky knitted fabric has a second bulky portion PB and a second low-bulk portion LB. Here, the second low-bulk portion is lower in volume than the second bulky portion. The first bulky portion extends toward the side of the second knitted layer, and the second bulky portion extends toward the side of the first knitted layer.

Description

Technical Field

[0001] The present invention relates to multilayer knitted wear such as socks (including ankle socks and high socks), stockings, tights, etc.

Background Art

[0002] In the past, there has been proposed a "multilayer knitted wear including at least one first knitted layer including a region made of a bulky knitted fabric and at least one second knitted layer including a region made of a water-absorbent and quick-drying knitted fabric having a higher water-absorbent and quick-drying property than the region made of the bulky knitted fabric" (see, for example, International Publication No. 2023 / 140346). Such multilayer knitted wear not only has excellent heat retention properties but also has the characteristic of making the wearing part of the wearer less stuffy, and is particularly worn during periods of low temperature.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, there is an extremely cold period when the temperature drops considerably even during the period of low temperature. In such an extremely cold period, a multilayer knitted wear having even higher heat retention properties is required.

[0005] An object of the present invention is to provide a multilayer knitted wear having better heat retention properties than conventional multilayer knitted wear.

Means for Solving the Problems

[0006] A multi-layered knitted attachment according to the first aspect of the present invention comprises at least one first knitted layer and at least one second knitted layer. The first knitted layer includes a first bulky region. The first bulky region consists of a first bulky knitted fabric. The first bulky knitted fabric has a first bulky portion. The second knitted layer includes a second partial bulky region. The second partial bulky region consists of a second partial bulky knitted fabric. The second partial bulky knitted fabric has a second bulky portion and a second low-bulk portion. Here, the second low-bulk portion is lower in volume than the second bulky portion. The first bulky portion extends toward the side of the second knitted layer, and the second bulky portion extends toward the side of the first knitted layer. Furthermore, the first layer may be located inside the second layer, and the second layer may be located inside the first layer.

[0007] As described above, this multi-layered braided device has a multi-layered structure consisting of at least one first braided layer including a first bulky region and at least one second braided layer including a second partially bulky region. Furthermore, the first bulky region extends toward the second braided layer, and the second bulky region extends toward the first braided layer. For this reason, this multi-layered braided device can contain more air than conventional multi-layered braided devices. As a result, this multi-layered braided device can exhibit higher heat retention than conventional multi-layered braided devices.

[0008] A multi-knitted attachment according to the second aspect of the present invention is a multi-knitted attachment according to the first aspect, wherein at least one first knitted layer includes a first partially bulked region. The first partially bulked region consists of a first partially bulked knitted fabric. The first partially bulked knitted fabric has a first bulked portion and a first low-bulked portion. Here, the first low-bulked portion is lower in volume than the first bulked portion.

[0009] In this multi-layered knitted footwear, not only does the second layer contain a second partially raised area, but the first layer also contains a first partially raised area. Therefore, this multi-layered knitted footwear can have a higher air content than conventional multi-layered knitted footwear. Consequently, this multi-layered knitted footwear can have even better heat retention than conventional multi-layered knitted footwear. Furthermore, if this multi-layered knitted footwear can be worn on the foot, and the first and second layers constitute a sole covering that covers the bottom of the foot, each time the first and second layers are stepped on, the partially raised areas are stepped on and their bulk decreases, causing the air contained in the partially raised areas and the air above the lowered areas to flow and diffuse. Therefore, when walking, this multi-layered knitted footwear can cause the warmed air inside the footwear to flow and diffuse, warming a relatively wide area of ​​the foot. Furthermore, this airflow and diffusion action promotes the gradual expulsion of humid air from the system, thus preventing the wearer's feet from becoming sweaty. The amount of airflow and diffusion in this multi-layered knitted footwear is greater than that of conventional multi-layered knitted footwear. Therefore, this multi-layered knitted footwear can enhance the aforementioned effects compared to conventional multi-layered knitted footwear. Moreover, even when the surface in direct contact with the multi-layered knitted footwear, such as the floor or shoes, is cold, the heat transfer area can be reduced, and the insulating effect of the air layer can be enjoyed, ultimately making it less likely for the cold to be transmitted to the feet.

[0010] The multi-layered knitted attachment according to the third aspect of the present invention is a multi-layered knitted attachment according to the second aspect, wherein the first bulky portion is arranged to face the second low-bulk portion.

[0011] Therefore, this multi-layered braided device allows for a thinner thickness in that area compared to the case where the first and second bulky sections are arranged facing each other. Furthermore, if this multi-layered braided device can be worn on the foot, and the first and second braided layers constitute a sole covering that covers the bottom of the foot, it is possible to easily expel moist air from the multi-layered braided device, and consequently, the area where it is worn can be made less prone to stuffiness.

[0012] The multi-layered knitting attachment according to the fourth aspect of the present invention is a multi-layered knitting attachment according to the second aspect, wherein the first bulky portion is arranged to face the second bulky portion.

[0013] If this multi-layered braid can be worn on the foot, and the first and second layers constitute a sole covering that covers the bottom of the foot, then a column is formed between the first and second raised sections, making it less likely for the space formed between the first and second lower sections to be compressed when the wearer walks. Therefore, compared to cases where the first and second raised sections are positioned opposite each other, this multi-layered braid can more easily benefit from the insulating effect of the air layer, even when the floor, shoes, or other surfaces that the multi-layered braid directly contacts are cold.

[0014] The multi-layered braiding device according to the fifth aspect of the present invention is a multi-layered braiding device according to the first aspect, which can be worn on at least the foot. The first braiding layer and the second braiding layer constitute a sole covering portion that covers the bottom side of the foot and / or an upper covering portion that covers the top side of the foot.

[0015] Therefore, this multi-layered brace can suppress heat release from the bottom of the foot when a sole covering is formed, and can suppress heat release from the top of the foot when an upper covering is formed.

[0016] The multi-layered knitted attachment according to the sixth aspect of the present invention is a multi-layered knitted attachment according to the first aspect, which can be attached to at least the foot. The first and second knitted layers are provided only in the toe covering portion. The toe covering portion covers the toes. Here, the toes refer to the toe area, and more specifically, the area anterior to the MTP joint. The multi-layered knitted attachment further comprises a non-toe covering portion that covers the foot area other than the toes. The non-toe covering portion is made of knitted fabric. When the multi-layered knitted attachment is, for example, a sock, the knitted fabric is preferably a pile knit.

[0017] Incidentally, the toes are known to be particularly susceptible to cold because they are the extremities of the foot. Also, generally, the toe area of ​​a shoe has a relatively larger space than the toes, while the space between the shoe and the foot is relatively small in other areas of the shoe. For this reason, this multi-layered knitted device can efficiently keep the toes, which are particularly prone to getting cold, warm without making the feet cramped inside the shoe, especially when the foot area other than the toe area is made of a single layer.

[0018] Furthermore, in this device, it is preferable that the ratio of the length of the tip covering portion to the total length of the bottom covering portion covering the sole of the foot is within the range of 0.24 to 0.4. This is because, by doing so, the tip covering portion of this device can completely cover the proximal phalanges of the feet of many people and also cover up to the vicinity of the toes of the metatarsals.

[0019] The multi-layered knitted attachment according to the seventh aspect of the present invention is a multi-layered knitted attachment according to the first aspect, which can be attached to at least the leg. The first and second knitted layers are provided only in the toe covering portion. The toe covering portion covers the tip of the foot. Here, the tip of the foot refers to the toe area, and more specifically, the area anterior to the MTP joint. Furthermore, this multi-layered knitted attachment further comprises a non-tip covering portion that covers the leg area other than the tip of the foot. The non-tip covering portion is made of knitted fabric. When the multi-layered knitted attachment is, for example, tights, the knitted fabric is preferably a plain knit.

[0020] Incidentally, since the tip part of the foot is the end of the foot, it is known that it is particularly prone to cold among the lower body parts. Also, generally, while a relatively large space is provided in the tip part of the shoe compared to the tip part of the foot, the space between the shoe and the foot in the parts other than the tip of the shoe is relatively small. Therefore, when this multi-knit wearing device has a single-layer structure or the like for the leg parts other than the tip covering part, it can efficiently keep warm the tip part of the foot, which is particularly prone to cold, while maintaining the leg at an appropriate temperature.

[0021] Also, in this wearing device, it is preferable that the length of the tip covering part is within the range of 4 cm or more and less than 15 cm in the flat state. Here, the base point on the tip side in the measurement of the length of the tip covering part is the most tip point. By doing so, the tip covering part of this wearing device can completely cover the metatarsophalangeal bones of many people's feet and also cover up to the vicinity of the front end of the middle metatarsal bones.

[0022] The multi-knit wearing device according to the eighth aspect of the present invention is the multi-knit wearing device according to the first aspect, and the second raised and lowered part is adjacent to at least two second raised parts. In such a case, both the second raised part and the second raised and lowered part may have a belt shape, or the second raised and lowered part may be adjacent to the second raised parts on both sides in the short direction.

[0023] When this multi-knit wearing device can be worn at least on the foot and the first knitted layer and the second knitted layer constitute a bottom covering part that covers the bottom side of the foot, in this multi-knit wearing device, the air flow and diffusion action of the second raised part on the air above the second raised and lowered part can be enhanced, and the air can be further flowed and diffused in the system.

[0024] The multi-knit wearing device according to the ninth aspect of the present invention is the multi-knit wearing device according to the second aspect, and the first raised and lowered part is adjacent to at least two first raised parts. In such a case, both the first raised part and the first raised and lowered part may have a belt shape, or the first raised and lowered part may be adjacent to the first raised parts on both sides in the short direction.

[0025] This multi-knit wearing tool can be worn on at least the feet. When the first knitted layer and the second knitted layer form a bottom covering part that covers the bottom side of the foot, in this multi-knit wearing tool, the air flow and diffusion action of the first raised part on the air above the first sunken part can be enhanced, and the air can be further flowed and diffused within the system.

[0026] The multi-knit wearing tool according to the tenth aspect of the present invention is the multi-knit wearing tool according to the first aspect, wherein the first knitted layer is disposed outside the second knitted layer. Further, the second knitted layer includes a region made of a water-absorbent and quick-drying knitted fabric having a water absorption and quick-drying property higher than that of the first raised region. The region made of the water-absorbent and quick-drying knitted fabric is preferably the second partial raised region. Here, the first knitted layer preferably has a heat retention property higher than that of the water-absorbent and quick-drying knitted fabric, or a thermal conductivity lower than that of the water-absorbent and quick-drying knitted fabric. The water-absorbent and quick-drying knitted fabric has a water absorption and quick-drying property higher than that of the first raised region. Further, this water-absorbent and quick-drying knitted fabric may or may not have air permeability.

[0027] Therefore, this multi-knit wearing tool has not only heat retention but also water absorption and quick-drying properties. Accordingly, this multi-knit wearing tool is excellent in heat retention, and can further prevent the wearing part of the person wearing this multi-knit wearing tool from getting stuffy. Further, when the first knitted layer has a thermal conductivity lower than that of the water-absorbent and quick-drying knitted fabric, the first knitted layer can make it difficult or suppress the heat of the wearing part from being taken away by a floor or shoes having a temperature lower than the body temperature due to heat conduction, or the cold of the floor or shoes from being transmitted to the feet. Further, even when a part where the multi-knit wearing tool directly contacts, such as the floor or shoes, is cold, it is possible to suppress the heat of the feet from being taken away by a floor or shoes having a temperature lower than the body temperature due to heat conduction, or the cold of the floor or shoes from being transmitted to the feet.

[0028] A multi-layered knitted attachment according to the 11th aspect of the present invention is a multi-layered knitted attachment according to the 10th aspect, further comprising at least one third layer. The third layer includes a region made of a moisture-absorbing, heat-generating knitted fabric having moisture-absorbing and heat-generating properties. The moisture-absorbing, heat-generating knitted fabric is knitted from yarn having moisture-absorbing and heat-generating properties. The water-absorbing, quick-drying knitted fabric is knitted from yarn containing water-absorbing, quick-drying yarn. Either the second layer or the third layer is located in the innermost layer.

[0029] Therefore, this multi-layered knitted device can efficiently absorb sweat from the feet and dry it quickly, while also efficiently warming the wearer's feet by utilizing the moisture from the evaporated sweat.

[0030] The multi-layered knitted attachment according to the twelfth aspect of the present invention is a multi-layered knitted attachment according to the tenth aspect, wherein the water-absorbing, quick-drying knitted fabric is knitted from face yarn and back yarn. The face yarn contains either a moisture-absorbing, heat-generating yarn or a water-absorbing, quick-drying yarn. When the face yarn contains a moisture-absorbing, heat-generating yarn, the back yarn contains a water-absorbing, quick-drying yarn, and when the face yarn contains a water-absorbing, quick-drying yarn, the back yarn contains a moisture-absorbing, heat-generating yarn.

[0031] Therefore, this multi-layered knitted device, using the same knit fabric, can absorb sweat from the feet and dry it quickly, while also actively warming the wearer's feet by utilizing the moisture from the evaporated sweat.

[0032] The multi-layered knitted attachment according to the 13th aspect of the present invention is a multi-layered knitted attachment according to the 10th aspect, wherein the water-absorbing and quick-drying knitted fabric is a cross-knitted fabric of core sheath yarn and water-absorbing and quick-drying yarn.

[0033] Therefore, this multi-layered braid can efficiently absorb sweat from the feet and quickly dry it.

[0034] The multi-layered knitted attachment according to the 14th aspect of the present invention is a multi-layered knitted attachment according to the 10th aspect, wherein the water-absorbing and quick-drying knitted fabric is a cross-knitted fabric of a yarn having moisture-absorbing and heat-generating properties and a water-absorbing and quick-drying yarn.

[0035] Therefore, this multi-layered knitted attachment not only provides the benefits of water absorption and quick drying, but also the benefits of moisture absorption and heat generation.

[0036] The multi-layered knitted attachment according to the 15th aspect of the present invention is a multi-layered knitted attachment according to the first aspect, wherein the first bulky knitted fabric is a first pile knitted fabric having pile knitting. The second partial bulky knitted fabric is a second partial pile knitted fabric having partial pile knitting. The pile portion of the first pile knitted fabric extends toward the side of the second knitted layer, and the pile portion of the second partial pile knitted fabric extends toward the side of the first knitted layer.

[0037] If this multi-layered bracing device can be attached to at least the foot, and the first and second layers constitute a sole covering that covers the bottom of the foot, then with this multi-layered bracing device, even when the floor or other area in direct contact with the multi-layered bracing device is cold, the heat transfer area of ​​that cold can be reduced, and the insulating effect of the air layer can be enjoyed, and as a result, the cold can be less likely to be transmitted to the foot.

[0038] The multi-layered knitted attachment according to the sixteenth aspect of the present invention is a multi-layered knitted attachment according to the second aspect, wherein the first bulky knitted fabric is a first partial pile knitted fabric having partial pile knitting. The second bulky knitted fabric is a second partial pile knitted fabric having partial pile knitting. The pile portion of the first partial pile knitted fabric extends toward the second knitted layer, and the pile portion of the second partial pile knitted fabric extends toward the first knitted layer.

[0039] If this multi-layered bracing device can be attached to at least the foot, and the first and second layers constitute a sole covering that covers the bottom of the foot, then with this multi-layered bracing device, even when the floor or other area in direct contact with the multi-layered bracing device is cold, the heat transfer area of ​​that cold can be reduced, and the insulating effect of the air layer can be enjoyed, and as a result, the cold can be less likely to be transmitted to the foot.

[0040] The multi-layered knitting device according to the 17th aspect of the present invention is a multi-layered knitting device according to the first aspect, wherein the first and / or second layers are constructed of a pseudo-pile knit formed by interweaving (A) a plain knit course of core-sheath yarn having elasticity and bulkiness, in which a sheath yarn is covered with a core yarn, and (B) a tuck knit course of crimped yarn having elasticity and bulkiness.

[0041] If this multi-layered brace can be worn on the foot, and the first and second layers constitute a sole covering that covers the bottom of the foot, then this multi-layered brace can enjoy the insulating effect of the air layer, and even if the floor, shoes, or other areas in direct contact with the multi-layered brace are cold, the cold will be less likely to be transmitted to the foot.

[0042] The multi-layered knitted attachment according to the 18th aspect of the present invention is a multi-layered knitted attachment according to the 10th aspect, wherein the first knitted layer and / or the second knitted layer are knitted from a cross-knitted fabric of (a) core-sheath yarn having elasticity and bulkiness, in which a sheath yarn is covered with a core yarn, and (b) crimp yarn having elasticity and bulkiness.

[0043] If this multi-layered bracing device can be worn on the foot, and the first and second layers constitute a foot covering that covers the foot, then this multi-layered bracing device can efficiently absorb sweat from the foot and dry it quickly, and can also efficiently and actively warm the wearer's foot by utilizing the moisture from the evaporated sweat.

[0044] The multi-layered knitted attachment according to the 19th aspect of the present invention is a multi-layered knitted attachment according to the first aspect, wherein the second knitted layer is positioned inside the first knitted layer and has higher hydrophobicity or water repellency than the first knitted layer. Here, it is preferable that the second knitted layer is knitted from face yarn and back yarn. In this case, it is preferable that the face yarn has higher hydrophobicity or water repellency than the yarn used to knit the first knitted layer, and it is preferable that the back yarn is a yarn that has higher hydrophobicity or water repellency than the yarn used to knit the first knitted layer, or a water-absorbing and quick-drying yarn, or a moisture-absorbing and heat-generating yarn. Furthermore, it is preferable that the first knitted layer is knitted from at least one of the water-absorbing and quick-drying yarn and the moisture-absorbing and heat-generating yarn.

[0045] As described above, in this multi-layered braid, the second layer is positioned inside the first layer and has higher hydrophobicity or water repellency than the first layer. Therefore, when a wearer wears this multi-layered braid, it is possible to suppress the return of sweat produced by the wearer to the wearer's skin. Furthermore, if the second layer is made up of outer yarn (yarn that is exposed on the inside, i.e., yarn that touches the wearer's skin) and inner yarn (yarn that is hardly exposed on the inside, i.e., yarn that does not easily touch the wearer's skin), and the inner yarn is made of yarn that has higher hydrophobicity or water repellency than the yarn that makes up the first layer, it is possible to easily transfer sweat produced by the wearer to the first layer. In addition, if the inner yarn is made of water-absorbing and quick-drying yarn, it is possible to easily transfer sweat produced by the wearer from the outer yarn to the inner yarn, and consequently, the sweat can be dried quickly. Furthermore, in such cases, if the backing thread is made of a thread that has moisture-absorbing and heat-generating properties, it becomes easier to transfer the sweat produced by the wearer from the outer thread to the backing thread, and consequently, the heat generated by the backing thread can be promoted.

[0046] The multi-layered knitted attachment according to the 20th aspect of the present invention is a multi-layered knitted attachment according to the first aspect, wherein the second knitted layer is knitted from face yarn and back yarn. Furthermore, this second knitted layer is positioned inside the first knitted layer. Here, the face yarn includes yarn that is more hydrophobic or water-repellent than the yarn used to knit the first knitted layer, and water-absorbing and quick-drying yarn. It is preferable that the yarn that is more hydrophobic or water-repellent than the yarn used to knit the first knitted layer and the water-absorbing and quick-drying yarn are knitted alternately. Furthermore, it is preferable that the second bulky portion is knitted with yarn that is more hydrophobic or water-repellent than the yarn used to knit the first knitted layer, and the second low-bulk portion is knitted with water-absorbing and quick-drying yarn. Furthermore, it is preferable that the back yarn is either yarn that is more hydrophobic or water-repellent than the yarn used to knit the first knitted layer, water-absorbing and quick-drying yarn, or yarn that has moisture-absorbing and heat-generating properties. Furthermore, it is preferable that the first layer is constructed from at least one of two types of yarn: a water-absorbing, quick-drying yarn and a moisture-absorbing, heat-generating yarn.

[0047] As described above, in this multi-layered knitted device, the second layer is knitted from face yarn and back yarn and is positioned inside the first layer. The face yarn includes yarn that is more hydrophobic or water-repellent than the yarn used to knit the first layer, as well as water-absorbing and quick-drying yarn. Therefore, when the wearer wears this multi-layered knitted device, it is possible to suppress the return of sweat produced by the wearer to the wearer's skin and to quickly dry the sweat. Furthermore, if the two types of face yarns described above are knitted alternately, the effect can be further enhanced. In addition, if the second bulky area is knitted with yarn that is more hydrophobic or water-repellent than the yarn used to knit the first layer, and the second low-bulk area is knitted with water-absorbing and quick-drying yarn, it is possible to suppress the accumulation of sweat in the second bulky area. Furthermore, if the back yarn is made of yarn that is more hydrophobic or water-repellent than the yarn used to knit the first layer, it is possible to easily transfer the sweat produced by the wearer to the first layer. Furthermore, when the backing thread is made of a water-absorbing and quick-drying yarn, it becomes easier to transfer the sweat produced by the wearer from the outer thread to the backing thread, and consequently, the sweat can be dried quickly. Also, when the backing thread is made of a yarn that has moisture-absorbing and heat-generating properties, it becomes easier to transfer the sweat produced by the wearer from the outer thread to the backing thread, and consequently, the heat generation by the backing thread can be promoted.

[0048] The multi-layered knitted attachment according to the 21st aspect of the present invention is a multi-layered knitted attachment according to the first aspect, wherein the first knitted layer is knitted from a first face yarn and a first back yarn. Furthermore, this first knitted layer is positioned outside the second knitted layer. Here, the first face yarn is a yarn that is more hydrophobic or water-repellent than the first back yarn. It is preferable that the first face yarn is knitted in pile knit or border pile knit. Furthermore, it is preferable that the first back yarn is elastic. Furthermore, it is preferable that the first back yarn is at least one of a water-absorbing, quick-drying yarn and a moisture-absorbing, heat-generating yarn. Furthermore, it is preferable that the first back yarn is knitted in plain knit. Incidentally, in the multi-layered knitted attachment according to this aspect, it is preferable that the second knitted layer is knitted from a second face yarn and a second back yarn. In this case, it is preferable that the second face yarn is a yarn that is more hydrophobic or water-repellent than the second back yarn. Furthermore, it is preferable that this second face yarn is a water-absorbing, quick-drying yarn. Furthermore, the second backing yarn is preferably elastic. The first backing yarn is preferably hydrophobic or water-repellent. In addition, both the second face yarn and the second backing yarn are preferably knitted in a plain weave.

[0049] As described above, in this multi-layered knitted device, the first layer is positioned outside the second layer, and the first layer uses a yarn with higher hydrophobicity or water repellency than the first backing yarn as the outer yarn, which is knitted together with the backing yarn. Therefore, in this multi-layered knitted device, when the first layer is the outermost layer, it is possible to suppress discomfort and coldness to the wearer caused by moisture from the outside, such as rain, penetrating the device. In such cases, if a water-absorbing and quick-drying yarn is used as the first backing yarn, the wearer's sweat can be quickly evaporated. On the other hand, if a yarn with moisture-absorbing and heat-generating properties is used as the first backing yarn, the yarn with moisture-absorbing and heat-generating properties can absorb water vapor and generate heat, actively warming the wearer's feet, etc.

[0050] Furthermore, in this multi-layered knitted device, if the second outer yarn is made of a yarn that is more hydrophobic or water-repellent than the second inner yarn, it is possible to further suppress discomfort and coldness caused by moisture entering from the outside, such as rain. In addition, if a water-absorbing and quick-drying yarn is used as the second outer yarn in such a case, the wearer's sweat can be evaporated quickly. [Brief explanation of the drawing]

[0051] [Figure 1] This is a side view of a double-knitted sock according to an embodiment of the present invention. [Figure 2] This is a rear view of a double-knitted sock when worn, according to an embodiment of the present invention. [Figure 3] This is a cross-sectional view II in Figure 2. [Figure 4] This figure shows the arrangement of the bulky and low-bulk regions of the outer layer relative to the bulky and low-bulk regions of the inner layer in Figure 3. Note that this figure shows the area near the top and bottom tip coverings. [Figure 5] This figure shows the arrangement relationship between the bulky and low-bulk regions of the outer layer and the bulky and low-bulk regions of the inner layer. In this figure, the bulky regions of the inner layer are shown facing the bulky regions of the outer layer. [Figure 6] This figure shows the pile knit structure of a double-knit sock according to an embodiment of the present invention. [Figure 7] This is a plan view of the outer layer portion of the bottom covering portion of the foot covering portion in a double-knitted sock according to an embodiment of the present invention. [Figure 8] This figure shows the arrangement relationship between the bulky and low-bulk areas of the outer layer and the bulky and low-bulk areas of the inner layer in a double-knitted sock according to modification (E). In this figure, the bulky areas of the inner layer are shown facing the low-bulk areas of the outer layer. [Figure 9] This figure shows the first end of a double-knitted sock according to modified example (H). [Figure 10] This is a plan view of the outer layer portion of the bottom covering portion of the foot covering portion in a double-knitted sock according to modified example (M). [Figure 11]This is a plan view of the outer layer portion of the bottom covering portion of the foot covering portion in a double-knitted sock according to modified example (M). [Figure 12] This is a perspective view of the double-knit tights as shown in modified example (O). [Figure 13] This is a plan view of a double-knit tights according to modified example (O). [Figure 14] This figure shows the knitted fabric structure (i) in a double-knitted sock according to modified example (P). [Figure 15] This figure shows the knitted fabric structure (ii) in a double-knitted sock according to modified example (P). [Figure 16] This figure shows the knitted fabric structure (iii) in a double-knitted sock according to modified example (P). [Figure 17] This figure shows the knitted fabric structure (iv) in a double-knitted sock according to modified example (P). [Figure 18] This figure shows the knitted fabric structure (v) in a double-knitted sock according to modified example (P). [Figure 19] This figure shows the knitted fabric structure (vi) in a double-knitted sock according to modified example (P). [Figure 20] This figure shows the knitted fabric structure (vii) in a double-knitted sock according to modified example (P). [Figure 21] This figure shows the knitted fabric structure (viii) in a double-knitted sock according to modified example (P). [Figure 22] This is a diagram of a double-knitted sock according to modified example (H). [Figure 23] This is a diagram of another double-knitted sock relating to modified example (H). [Explanation of symbols]

[0052] 100 Double-knit socks (multi-layer knitting attachment) 111 Upper side covering (upper covering) 112 Bottom covering section (bottom covering section) 120 Heel covering portion (non-tip covering portion) 130 Achilles tendon coverage (non-tip coverage) 140 Ankle coverage area (non-tip coverage area) 150 Lower leg covering area (non-tip covering area) 160 Opening (non-toe covering) 170 Panty section 200 Double-knit tights AL air layer BO boundary IL Inner Layer (Part 2 of the geological formations) LB low bulk part (1st low bulk part, 2nd low bulk part) OL outer layer (1st knitted fabric layer) PB Bulky part (1st bulky part, 2nd bulky part) RL low bulk area RP bulky area (1st bulky area, 2nd bulky area) TP tip coating [Modes for carrying out the invention]

[0053] <Configuration of a multi-layered knitted attachment device according to an embodiment of the present invention> The multi-layered knitted attachment device according to the embodiment of the present invention is a multi-layered attachment device that is worn on the foot, such as socks (foot covers, socks, knee-high socks), stockings, tights, etc. An example of the multi-layered knitted attachment device according to the embodiment of the present invention is the double-knitted sock 100 shown in Figures 1 to 3. The double-knitted sock 100 will be described in detail below as an embodiment, and the permissible configurations in the present invention will be explained.

[0054] <Structure of a double-knitted sock according to an embodiment of the present invention> The double-knitted sock 100 according to an embodiment of the present invention is a two-layer sock that has a hook shape in a side view, as shown in Figure 1, and is mainly composed of a foot covering portion 110, a heel covering portion 120, an Achilles tendon covering portion 130, ankle covering portion 140, a lower leg covering portion 150, and an opening portion 160, as shown in Figures 1 and 2. Furthermore, as shown in Figure 3, the double-knitted sock 100 is composed of an inner layer IL and an outer layer OL. These components and the two-layer structure will be described in detail below.

[0055] For the sake of clarity, Figures 1 to 3 define the vertical, horizontal, and front-to-back directions. These directions may be used to describe the structure of the double-knitted sock 100 in the following explanation.

[0056] (1) Foot covering The foot covering portion 110 is a bag-like portion that covers the area from the heel to the toes, and as shown in Figure 1, it mainly consists of an instep covering portion 111 and a sole covering portion 112. These portions will be described in detail below.

[0057] (1-1) Covering part on the upper side The instep covering portion 111 is mainly the part that covers the instep of the foot and is composed of an instep base covering portion 111b and an instep tip covering portion 111t, as shown in Figure 1. The instep base covering portion 111b is a roughly rectangular part that mainly covers the instep of the foot. This instep base covering portion 111b, together with the sole base covering portion 112b, forms a cylindrical main covering portion BP (see Figure 1). The instep tip covering portion 111t is a roughly semi-disc-shaped part that mainly covers the nail side of the toes and extends forward from the tip of the instep base covering portion 111b. This instep tip covering portion 111t, together with the sole tip covering portion 112t of the sole covering portion 112, forms a bag-shaped tip covering portion TP (see Figure 1).

[0058] As shown in Figures 4 and 5, the inner layer portion I11 of the upper-side covering portion 111 is knitted such that a straight-line low-bulk region RL is provided between two straight-line high-bulk regions RP in the wale direction (in other words, the inner layer portion I11 of the upper-side covering portion 111 is knitted with a partial high-bulk knit such as border pile knit (a knitting method in which pile knit and plain knit are performed alternately. The term "border" here does not mean a pattern with parallel line-shaped or band-shaped edging to emphasize the edges of the hem or sleeves). In the high-bulk region RP of the inner layer portion I11, a high-bulk region PB is knitted that extends toward the outer layer portion O11 side (the opposite side of the skin when the double-knitted sock 100 is worn). Here, the high-bulk region PB of the inner layer portion I11 faces the high-bulk region PB of the outer layer portion O11, as shown in Figures 4 and 5. At this time, as shown in Figure 5, an air layer AL is formed between the low-bulk area LB (described later) of the inner layer I11 and the low-bulk area LB of the outer layer O11. The bulky area RP is knitted using pile knitting. The pile knitting structure, as shown in Figure 6, is a knitting structure in which the loop length of the sinker loop TA1 of the pile yarn TA, which is the face yarn, is longer than the loop length of the sinker loop TB1 of the ground yarn TB, which is the backing yarn, and the pile yarn TA produces ring-shaped loops on the inner surface of the knitted fabric. The loop length of the needle loop TB2 of the ground yarn TB is the same as the loop length of the needle loop TA2 of the pile yarn TA. As shown in Figure 6, the peaks of the loops in the knitted stitches are needle loops, and the valleys of the loops in the knitted stitches are sinker loops. In the bulky area RP, the sinker loop TA1 portion of the pile yarn TA becomes the bulky area PB. Furthermore, even if there is one ground yarn TB, there may be multiple pile yarns TA (for example, two), and in this case, the risk of the bulkiness of the bulky region RP being reduced can be minimized. On the other hand, in the low-bulk region RL, as shown in Figures 4 and 5, a low-bulk region LB is knitted, which has a lower bulkiness than the bulky region PB of the bulky region RP. In addition, the low-bulk region RL is knitted using plain knitting.Furthermore, the number of stitches in the wale direction of the bulky region RP is not particularly limited, nor is the number of stitches in the wale direction of the low-bulk region RL. The number of stitches in the wale direction of the bulky region RP may be the same as or different from the number of stitches in the wale direction of the low-bulk region RL.

[0059] The inner layer portion I11 of the upper-side covering portion 111 is knitted from face yarn and back yarn. Here, the face yarn contains either a yarn with moisture-absorbing and heat-generating properties (hereinafter referred to as "moisture-absorbing and heat-generating yarn") or a yarn with water-absorbing and quick-drying properties (hereinafter referred to as "water-absorbing and quick-drying yarn"). When the face yarn contains a yarn with moisture-absorbing and heat-generating properties, the back yarn contains a water-absorbing and quick-drying yarn, and when the face yarn contains a water-absorbing and quick-drying yarn, the back yarn contains a yarn with moisture-absorbing and heat-generating properties. Examples of moisture-absorbing and heat-generating yarns include polyester / rayon blended yarns such as Hight Heat-T, acrylic / rayon blended yarns such as WARM PLUS-R, acrylate fibers, wool, cupro, and rayon. Acrylic / rayon blended yarns typically show a temperature rise of 3.7°C (moisture-absorbing and heat-generating properties) in the moisture-absorbing and heat-generating method B (test room temperature 20±2℃, initial humidity 40%RH / humidified humidity 90%RH). Furthermore, a double-layered knitted fabric consisting of plain knit and all-pile knit made from an acrylic / rayon blend yarn showed a heat retention rate of 47.2% in a heat retention test using a Thermolab II type testing machine (environmental conditions: 20℃, 65%RH), and a double-layered knitted fabric consisting of the same plain knit and border pile knit showed a heat retention rate of 46.8% in the same test. On the other hand, the yarn used to knit fabrics of other companies' products showed a temperature rise of at most 3.3℃ under the same conditions. In addition, bulky knitted fabrics of other companies showed only an equivalent or lower heat retention rate in the same test. Examples of water-absorbing and quick-drying yarns include polyester / polyurethane composite yarns such as LYCRA® fr. FX30 / 75, functional nylon yarns such as Wavelon® Ny, and polyester yarns. Note that LYCRA® fr. FX30 / 75 also has deodorizing properties.

[0060] As shown in Figures 4 and 5, the outer layer portion O11 of the upper part covering 111 is knitted such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the outer layer portion O11 of the upper part covering 111 is knitted with a partial high-bulk knit such as border pile knit). This outer layer portion O11 is knitted so that straight bands of high-bulk region RP and straight bands of low-bulk region RL are arranged alternately along the length direction Dl of the foot. Furthermore, as shown in Figures 4 and 5, in the high-bulk region RP of the outer layer portion O11, a high-bulk region PB is knitted that extends toward the inner layer portion I11 side (the skin side when the double-knit sock 100 is worn). As described above, the high-bulk region PB of the outer layer portion O11 is opposite the high-bulk region PB of the inner layer portion I11.

[0061] Furthermore, the outer layer O11 of the upper-side covering portion 111 is knitted from heat-generating yarn. Heat-generating yarns include, for example, moisture-absorbing heat-generating yarns (as described above) and light-absorbing heat-generating yarns. Light-absorbing heat-generating yarns are, for example, yarns containing a substance that absorbs sunlight and converts it into thermal energy.

[0062] (1-2) Bottom covering The sole covering portion 112 is mainly the part that covers the sole of the foot and is composed of a sole base covering portion 112b and a sole tip covering portion 112t, as shown in Figure 1. The sole base covering portion 112b is a roughly rectangular part that mainly covers the sole of the foot. Together with the instep base covering portion 111b, this sole base covering portion 112b forms a cylindrical main covering portion BP (see Figure 1). The sole tip covering portion 112t is a roughly semi-disc-shaped part that mainly covers the ventral side of the toes and extends forward from the tip of the sole base covering portion 112b. Together with the instep tip covering portion 111t of the instep covering portion 111, this sole tip covering portion 112t forms a bag-shaped tip covering portion TP (see Figure 1).

[0063] The inner layer portion I12 of the bottom covering portion 112 is knitted in the same way as the inner layer portion I11 of the upper covering portion 111, such that a straight band of low bulkiness region RL is provided between two straight bands of high bulkiness region RP in the wale direction (in other words, the inner layer portion I12 of the bottom covering portion 112 is knitted with a partial high bulkiness knit such as border pile knit). Also, as shown in Figure 5, in the high bulkiness region RP of the inner layer portion I12, a high bulkiness region PB is knitted that extends toward the outer layer portion O12. The high bulkiness region PB of the inner layer portion I12 faces the high bulkiness region PB of the outer layer portion O12, as shown in Figure 5. Furthermore, the inner layer portion I12 is knitted with the same yarn as the inner layer portion I11 of the upper covering portion 111.

[0064] The outer layer portion O12 of the sole covering portion 112 is knitted in the same way as the outer layer portion O11 of the upper covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in this case, the length direction of the foot as shown in Figure 7) (in other words, the outer layer portion O12 of the sole covering portion 112 is knitted with a partial high-bulk knit such as border pile knit). Also, as shown in Figure 5, in the high-bulk region RP of the outer layer portion O12, a high-bulk region PB extending toward the inner layer portion I12 is knitted. As described above, the high-bulk region PB of the outer layer portion O12 is opposite the high-bulk region PB of the inner layer portion I12. Furthermore, the outer layer portion O12 is knitted with the same yarn as the outer layer portion O11 of the upper covering portion 111.

[0065] (2) Heel covering The heel covering portion 120 is a part that covers the heel and extends posteriorly from the rear end of the foot covering portion 110, as shown in Figure 1.

[0066] The inner layer portion I20 of the heel covering portion 120 is knitted in the same way as the inner layer portion I11 of the upper covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the inner layer portion I20 of the heel covering portion 120 is knitted with a partial high-bulk knit such as border pile knit). Furthermore, as shown in Figure 5, a high-bulk portion PB extending toward the outer layer portion O20 is knitted in the high-bulk region RP of the inner layer portion I20. The high-bulk portion PB of the inner layer portion I20 faces the high-bulk portion PB of the outer layer portion O20, as shown in Figure 5. In addition, the inner layer portion I20 is knitted with the same yarn as the yarn used to knit the inner layer portion I11 of the upper covering portion 111.

[0067] The outer layer portion O20 of the heel covering portion 120 is knitted in the same way as the outer layer portion O11 of the upper covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the outer layer portion O20 of the heel covering portion 120 is knitted with a partial high-bulk knit such as border pile knit). Also, as shown in Figure 5, in the high-bulk region RP of the outer layer portion O20, a high-bulk region PB extending toward the inner layer portion I20 is knitted. As described above, the high-bulk region PB of the outer layer portion O20 is opposite the high-bulk region PB of the inner layer portion I20. Furthermore, the outer layer portion O20 is knitted with the same yarn as the yarn used to knit the outer layer portion O11 of the upper covering portion 111.

[0068] (3) Achilles tendon coverage The Achilles tendon covering portion 130 is a portion that covers the Achilles tendon and extends upward from the posterior upper end of the heel covering portion 120, as shown in Figures 1 and 2.

[0069] The inner layer portion I30 of the Achilles tendon covering portion 130 is knitted in the same way as the inner layer portion I11 of the dorsal covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the inner layer portion I30 of the Achilles tendon covering portion 130 is knitted with a partial high-bulk knit such as border pile knit). Furthermore, as shown in Figure 5, in the high-bulk region RP of the inner layer portion I30, a high-bulk region PB extending toward the outer layer portion O30 is knitted. The high-bulk region PB of the inner layer portion I30 faces the high-bulk region PB of the outer layer portion O30, as shown in Figure 5. In addition, the inner layer portion I30 is knitted with the same yarn as the yarn used to knit the inner layer portion I11 of the dorsal covering portion 111.

[0070] The outer layer portion O30 of the Achilles tendon covering portion 130 is knitted in the same way as the outer layer portion O11 of the dorsal covering portion 111, such that a straight band of low bulkiness region RL is provided between two straight bands of high bulkiness region RP in the wale direction (in other words, the outer layer portion O30 of the Achilles tendon covering portion 130 is knitted with a partial high bulkiness knit such as border pile knit). Also, as shown in Figure 5, in the high bulkiness region RP of the outer layer portion O30, a high bulkiness region PB is knitted that extends toward the inner layer portion I30. As described above, the high bulkiness region PB of the outer layer portion O30 is opposite the high bulkiness region PB of the inner layer portion I30. Furthermore, the outer layer portion O30 is knitted with the same yarn as the outer layer portion O11 of the dorsal covering portion 111.

[0071] (4) Ankle covering The ankle covering portion 140 is a part that covers the ankle and extends upward from the front upper end of the foot covering portion 110, as shown in Figure 1. This ankle covering portion 140 is located below the lower leg covering portion 150.

[0072] The inner layer portion I40 of the ankle covering portion 140 is knitted in the same way as the inner layer portion I11 of the upper covering portion 111, such that a straight band of low bulkiness region RL is provided between two straight bands of high bulkiness region RP in the wale direction (in other words, the inner layer portion I40 of the ankle covering portion 140 is knitted with a partial high bulkiness knit such as border pile knit). Also, as shown in Figure 5, in the high bulkiness region RP of the inner layer portion I40, a high bulkiness region PB is knitted that extends toward the outer layer portion O40. The high bulkiness region PB of the inner layer portion I40 faces the high bulkiness region PB of the outer layer portion O40, as shown in Figure 5. Furthermore, the inner layer portion I40 is knitted with the same yarn as the inner layer portion I11 of the upper covering portion 111.

[0073] The outer layer portion O40 of the ankle covering portion 140 is knitted in the same way as the outer layer portion O11 of the instep covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the outer layer portion O40 of the ankle covering portion 140 is knitted with a partial high-bulk knit such as border pile knit). Also, as shown in Figure 5, in the high-bulk region RP of the outer layer portion O40, a high-bulk region PB extending toward the inner layer portion I40 is knitted. As described above, the high-bulk region PB of the outer layer portion O40 is opposite the high-bulk region PB of the inner layer portion I40. Furthermore, the outer layer portion O40 is knitted with the same yarn as the yarn used to knit the outer layer portion O11 of the instep covering portion 111.

[0074] (5) Lower leg covering The lower leg covering portion 150 is a tubular portion for covering the lower leg, and as shown in Figures 1 and 2, it extends upward from the upper ends of the Achilles tendon covering portion 130 and the ankle covering portion 140. Preferably, this lower leg covering portion 150 has a tapered shape, gradually widening from the ankle covering portion side towards the opening side.

[0075] The inner layer portion I50 of the lower leg covering portion 150 is knitted in the same way as the inner layer portion I11 of the upper leg covering portion 111, such that a straight band of low bulkiness region RL is provided between two straight bands of high bulkiness region RP in the wale direction (in other words, the inner layer portion I50 of the lower leg covering portion 150 is knitted with a partial high bulkiness knit such as border pile knit). Furthermore, as shown in Figure 5, in the high bulkiness region RP of the inner layer portion I50, a high bulkiness region PB is knitted that extends toward the outer layer portion O50. The high bulkiness region PB of the inner layer portion I50 faces the high bulkiness region PB of the outer layer portion O50, as shown in Figure 5. In addition, the inner layer portion I50 is knitted with the same yarn as the inner layer portion I11 of the upper leg covering portion 111.

[0076] The outer layer portion O50 of the lower leg covering portion 150 is knitted in the same way as the outer layer portion O11 of the upper leg covering portion 111, such that a straight band of low bulkiness region RL is provided between two straight bands of high bulkiness region RP in the wale direction (in other words, the outer layer portion O50 of the lower leg covering portion 150 is knitted with a partial high bulkiness knit such as border pile knit). Also, as shown in Figure 5, in the high bulkiness region RP of the outer layer portion O50, a high bulkiness region PB is knitted that extends toward the inner layer portion I50. As described above, the high bulkiness region PB of the outer layer portion O50 is opposite the high bulkiness region PB of the inner layer portion I50. Furthermore, the outer layer portion O50 is knitted with the same yarn as the yarn used to knit the outer layer portion O11 of the upper leg covering portion 111.

[0077] (6) Opening of the shoe The opening portion 160 is a part formed to make it easier to put on the double-knitted sock 100 and to prevent the double-knitted sock 100 from slipping down, and is formed on the upper side of the lower leg covering portion 150, as shown in Figures 1 and 2.

[0078] The inner layer portion I60 of the opening portion 160 is knitted in the same way as the inner layer portion I11 of the upper covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the inner layer portion I60 of the opening portion 160 is knitted with a partial high-bulk knit such as border pile knit). Also, as shown in Figure 5, in the high-bulk region RP of the inner layer portion I60, a high-bulk portion PB is knitted that extends toward the outer layer portion O60. The high-bulk portion PB of the inner layer portion I60 faces the high-bulk portion PB of the outer layer portion O60, as shown in Figure 5. Furthermore, the inner layer portion I60 is knitted with the same yarn as the yarn used to knit the inner layer portion I11 of the upper covering portion 111.

[0079] The outer layer portion O60 of the opening portion 160 is knitted in the same way as the outer layer portion O11 of the upper covering portion 111, such that a straight band of low bulkiness region RL is provided between two straight bands of high bulkiness region RP in the wale direction (in other words, the outer layer portion O60 of the opening portion 160 is knitted with a partially bulky knit such as border pile knit). Also, as shown in Figure 5, in the high bulkiness region RP of the outer layer portion O60, a high bulkiness region PB is knitted that extends toward the inner layer portion I60. As described above, the high bulkiness region PB of the outer layer portion O60 is opposite the high bulkiness region PB of the inner layer portion I50. Furthermore, the outer layer portion O60 is knitted with the same yarn as the outer layer portion O11 of the upper covering portion 111. Note that the outer layer portion O60 of the opening portion 160 may be knitted with a highly elastic knit fabric. Highly elastic knitted fabrics can be made from natural yarns such as cotton, linen, wool, and silk, or synthetic yarns such as nylon and polyester, or blends thereof.

[0080] <Specific method for forming double-knit socks according to an embodiment of the present invention> The double-knitted sock 100 can be formed in various ways, but it is particularly preferable to form it by knitting the fabric. Such methods include, for example, (i) starting knitting from the opening side and knitting up to the tip covering part TP of the foot covering part 110 to form the outer layer OL, then continuing to knit from the tip covering part side of the foot covering part 110 and knitting up to the opening part 160 to form the inner layer IL, pushing the inner layer IL into the outer layer OL, and then sewing the inner layer part I60 and the outer layer part O60 of the opening part 160 together with connecting thread, or (ii) starting knitting from the opening side and knitting up to the tip covering part TP of the foot covering part 110 to form the inner layer IL, and then continuing to knit up to the tip of the foot covering part 110 (iii) Starting knitting from the covering part side, knitting up to the opening part 160 to form the outer layer OL, then pushing the inner layer IL into the outer layer OL, and then suturing the inner layer part I60 and outer layer part O60 of the opening part 160 with connecting thread, (iii) Starting knitting from the tip covering part side of the foot covering part 110, knitting up to the opening part 160 to form the outer layer OL, then continuing to knit from the opening part side, knitting up to the tip covering part TP of the foot covering part 110 to form the inner layer IL, then pushing the inner layer IL into the outer layer OL, and then suturing the inner layer part and outer layer part of the tip covering part TP of the foot covering part 110 (iv) A method of sewing together with connecting thread (see, for example, Japanese Patent Publication No. 2004-36059 or Japanese Utility Model Registration No. 3055454), (iv) A method of starting knitting from the tip covering side of the foot covering part 110 and knitting up to the opening part 160 to form the inner layer IL, then continuing to knit from the opening side and knitting up to the tip covering part TP of the foot covering part 110 to form the outer layer OL, pushing the inner layer IL into the inside of the outer layer OL, and then sewing together the inner layer portion and the outer layer portion of the tip covering part TP of the foot covering part 110 with connecting thread (see, for example, Japanese Patent Publication No. 2004-36059 or Japanese Utility Model Registration No. 3055454), (See Patent Publication No. 3055454, etc.), (v) a method in which the inner layer IL and outer layer OL are knitted separately, the inner layer IL is pushed into the interior of the outer layer OL, and then the inner layer portion and outer layer portion of the tip covering portion TP of the foot covering portion 110 are sewn together with connecting thread, and the inner layer portion I60 and outer layer portion O60 of the opening portion 160 are sewn together with connecting thread, (vi) a method in which the inner layer IL and outer layer OL are knitted separately, the inner layer IL is pushed into the interior of the outer layer OL, and then the inner layer portion I60 and outer layer portion O60 of the opening portion 160 are fastened together detachably with hooks, buttons, etc.

[0081] <Features of the double-knitted sock according to the embodiment of the present invention> The double-knitted sock 100 according to an embodiment of the present invention, having the above-described configuration, can contain more air than conventional multi-knitted fasteners (multi-knitted fasteners comprising an outer layer knitted with full bulk knit or partial bulk knit, and an inner layer knitted from a water-absorbing and quick-drying fabric having higher water absorption and quick-drying properties than the knitted fabric used to knit the outer layer). Therefore, this double-knitted sock 100 can exhibit higher heat retention than conventional multi-knitted fasteners.

[0082] <Variation> (A) In the double-knitted sock 100 according to the above embodiment, a bag-shaped toe cover portion TP was formed by the upper toe cover portion 111t and the bottom toe cover portion 112t. However, toe pockets for covering each or several toes of the foot may be formed from the upper toe cover portion and the bottom toe cover portion.

[0083] (B) In the above embodiment, a double-knitted sock 100 was used to illustrate an example of a multi-layered knitted attachment, but the multi-layered knitted attachment is not limited to this double-knitted sock 100, and may be a triple-knitted or multi-layered sock. For example, in the case of a triple-knitted sock, the third layer may be provided on the outside of the inner layer IL, or on the inside of the inner layer IL. When the third layer is provided on the outside of the inner layer IL, the inner layer IL is located as the innermost layer, and when the third layer is provided on the inside of the inner layer IL, the third layer is located as the innermost layer. Each part of the third layer may be knitted from, for example, a moisture-absorbing, heat-generating yarn.

[0084] (C) In the double-knit sock 100 according to the above embodiment, the outer layer portion O11 of the upper covering portion 111, the outer layer portion O12 of the sole covering portion 112, the outer layer portion O20 of the heel covering portion 120, the outer layer portion O30 of the Achilles tendon covering portion 130, the outer layer portion O40 of the ankle covering portion 140, the outer layer portion O50 of the lower leg covering portion 150, and the outer layer portion O60 of the opening portion 160 were knitted using a partial bulk knit such as border pile knit. However, at least one of these outer layer portions may be knitted using a full bulk knit such as full pile knit. This full bulk knit fabric not only forms an air layer that holds (includes) more air than plain knit, mesh knit, tuck knit, etc., but also provides cushioning when the wearer walks. In other words, this all-over bulky knit fabric has higher heat retention than plain knit, mesh knit, tuck knit, etc., or lower thermal conductivity than water-absorbing quick-drying knit fabrics. The all-over bulky knit fabric only needs to have an air layer and high cushioning properties, and there are no particular limitations on its material and manufacturing method. The all-over bulky knit fabric can be formed, for example, by (i) a method of changing the shape of the stitches, such as a pile knit or pseudo-pile knit in which the stitches are formed in a loop shape, (ii) a method of using bulky yarn or untwisted yarn that has been bulky processed, (iii) a method of applying post-treatment such as raising the nap of the fabric surface after forming the outer layer, or (iv) a method of attaching a separate component, such as attaching a sponge-like component such as foamed urethane (see, for example, Japanese Patent Application Publication No. 2021-116059).

[0085] Furthermore, in the double-knitted sock 100 according to the embodiment, the inner layer portion I11 of the upper covering portion 111, the inner layer portion I12 of the sole covering portion 112, the inner layer portion I20 of the heel covering portion 120, the inner layer portion I30 of the Achilles tendon covering portion 130, the inner layer portion I40 of the ankle covering portion 140, the inner layer portion I50 of the lower leg covering portion 150, and the inner layer portion I60 of the opening portion 160 were knitted using a partial bulky knit such as border pile knit. However, at least one of these inner layer portions may be knitted using a full bulky knit such as full pile knit.

[0086] (D) In the double-knitted sock 100 according to the above embodiment, the inner layer portion of the upper toe covering portion 111t of the upper covering portion 111 and the inner layer portion of the bottom toe covering portion 112t of the bottom covering portion 112 were knitted using a partial bulk knit such as border pile knit. However, these inner layer portions may also be knitted using a mesh knit.

[0087] (E) In the double-knitted sock 100 according to the previous embodiment, the bulky portion PB of the inner layer IL faced the bulky portion PB of the outer layer OL. However, the bulky portion PB of the inner layer IL does not have to face the bulky portion PB of the outer layer OL, as shown in Figure 8. In other words, the bulky portion PB of the inner layer IL may face the low-bulk portion LB of the outer layer OL, as shown in Figure 8. In this case, as shown in Figure 8, an air layer AL is formed between the bulky portion PB of the inner layer IL and the low-bulk portion LB of the outer layer OL, and between the low-bulk portion LB of the inner layer IL and the bulky portion PB of the outer layer OL.

[0088] (F) In the double-knitted sock 100 according to the previous embodiment, the inner and outer layers of each part were knitted such that a low-bulk region RL was provided between two bulky regions RP in the wale direction. However, the knitting pattern of the bulky regions RP and low-bulk regions RL is not limited in this way, and it is sufficient that the low-bulk region RL is adjacent to at least two bulky regions RP. For example, the inner and outer layers of each part may be knitted such that a low-bulk region RL is provided between two bulky regions RP in the course direction.

[0089] (G) In the double-knitted sock 100 according to the above embodiment, the foot covering portion 110 had a two-layer structure. However, either the upper-side covering portion 111 or the bottom-side covering portion 112 of the foot covering portion 110 may have a two-layer structure, while the other has a single-layer structure. The single-layer portion may be knitted using any knit fabric (for example, plain knit, mesh knit, tuck knit, full pile knit, border pile knit, etc.).

[0090] (H) Although the double-knitted sock 100 according to the above embodiment has an overall two-layer structure, the upper tip covering portion 111t of the upper covering portion 111 and the bottom tip covering portion 112t of the bottom covering portion 112 of the foot covering portion 110, i.e., the tip covering portion TP, may also have a two-layer structure. In this case, the parts other than these tip covering portion TP may have a single-layer structure, and these parts may be knitted in any knit fabric (for example, plain knit, mesh knit, tuck knit, full pile knit, border pile knit, etc.). In this case, it is preferable that the ratio of the length of the tip covering portion TP to the total length of the bottom covering portion 112 is within the range of 0.24 to 0.4.

[0091] Furthermore, the tip covering portion TP, specifically the instep tip covering portion 111t of the instep covering portion 111 and the bottom tip covering portion 112t of the bottom covering portion 112 of the foot covering portion 110, may be extended so that the tip covering portion TP completely covers the proximal phalanx of the foot and extends to the vicinity of the toe side of the metatarsal bones. In other words, in addition to the instep tip covering portion 111t of the instep covering portion 111 of the foot covering portion 110 and the bottom tip covering portion 112t of the bottom covering portion 112, the first end portion 111m (see Figure 9) of the instep base covering portion 111b of the instep covering portion 111 that extends from the boundary BO between the instep base covering portion 111b and the instep tip covering portion 111t toward the ankle covering portion 140, and the second end portion 112m (the portion located on the opposite side of the first end portion 111m shown in Figure 9) of the bottom base covering portion 112b of the bottom covering portion 112 that extends from the boundary between the bottom base covering portion 112b and the bottom tip covering portion 112t toward the heel covering portion 120, may also be made into a two-layer structure. In such cases, it is preferable that the ratio of "the sum of the lengths of the bottom tip covering portion 112t and the second end portion 112m in the extension direction" to "the total length of the bottom covering portion 112" is within the range of 0.24 or more and 0.4 or less.

[0092] The "total length of the bottom covering portion 112" mentioned above is defined as follows, using the unfolded diagrams of the double-knitted sock shown in Figures 22 and 23. In Figure 22, all parts except the toe covering portion TP are assumed to be single-layer structures, and in Figure 23, all parts except the toe covering portion and the end are assumed to be single-layer structures. Furthermore, in Figures 22 and 23, the total length of the bottom covering portion 112 is indicated by the symbol LF.

[0093] When knitting the Achilles tendon covering portion 130, the ankle covering portion 140, the lower leg covering portion 150, and the opening portion 160, these covering portions 130, 140, 150, and 160 are knitted all around using a circular knitting machine, and the heel covering end of the all-around knitted portion is indicated as "CP3" in Figures 22 and 23. Similarly, when knitting the upper base covering portion 111b and the sole base covering portion 112b using a circular knitting machine, these covering portions 111b and 112b are knitted all around, and the heel covering end of the all-around knitted portion is indicated as "CP2" in Figures 22 and 23. The heel covering portion 120, which lies between end CP3 and end CP2, is knitted back and forth using a circular knitting machine. In Figures 22 and 23, the midpoint in the wale direction between end CP3 and end CP2 is indicated as "CP1". In Figures 22 and 23, the intermediate position P1 is shown as the position with the most stitches decreased in that back-and-forth knitting section. However, please note that the intermediate position CP1 may not necessarily be the position with the most stitches decreased if, for example, the number of stitches in the back-and-forth knitting section between the intermediate position CP1 and the end CP3 differs from the number of stitches in the back-and-forth knitting section between the intermediate position CP1 and the end CP2.

[0094] Furthermore, when knitting the inner and outer layers of the upper end covering portion 111t (or the upper end covering portion 111t and the first end portion 111m) and the inner and outer layers of the bottom end covering portion 112t (or the bottom end covering portion 112t and the second end portion 112m) using a circular knitting machine, these inner and outer layers are knitted back and forth. In Figures 22 and 23, the end of the back and forth knitted section on the bottom base covering portion side (or the second end portion side) is indicated by "CP4", and the end of the back and forth knitted section is indicated by "CP5". In Figures 22 and 23, the midpoint in the wale direction between the end CP4 and the end CP5 is indicated by "CP6". In Figures 22 and 23, the intermediate position CP6 is the position with the most stitch reduction in the back-and-forth knitting section. However, it should be noted that the intermediate position CP6 is not necessarily the position with the most stitch reduction, for example, if the number of stitches in the back-and-forth knitting section between the intermediate position CP6 and the end CP4 differs from the number of stitches in the back-and-forth knitting section between the intermediate position CP6 and the end CP5. The total length LF of the bottom covering section 112 is the length from the intermediate position CP1 to position CP6 in the wale direction.

[0095] By the way, for example, in the case of socks for a person whose foot length, that is, the length from the tip of the heel to the tip of the longest toe, is in the range of 193 mm to 289 mm, assuming that the length of the upper end covering portion 111t and the sole end covering portion 112t is 2.5 cm or more, the length L in the extension direction of the first end portion 111m and the second end portion 112m is preferably in the range of more than 1.5 cm and less than 5 cm, more preferably in the range of more than 2 cm and less than 4.5 cm, and even more preferably in the range of more than 2.5 cm and less than 4 cm when laid flat. According to anthropometric data from the Human Quality Research Center (HQL), for adult males aged 20 to 79, the foot length is between 217mm and 289mm, and the arch length is between 136mm and 191mm. For adult females aged 20 to 79, the foot length is between 193mm and 261mm, and the arch length is between 119mm and 178mm. Therefore, the tip covering TP and the ends 111m and 112m can completely cover the proximal phalanges of the foot and extend to the vicinity of the toe side of the metatarsal bone of the fifth toe, while reducing the risk of the knitted fabric becoming too thick near the metatarsophalangeal joint, thus reducing the risk of tightness when wearing shoes.

[0096] Furthermore, in the above configuration, the sum of the lengths in the extension direction of the bottom-side tip covering portion 112t and the second end portion 112m may be longer than the sum of the lengths in the extension direction of the top-side tip covering portion 111t and the first end portion 111m. In this case, it is preferable to increase the number of courses in the second end portion 112m compared to the number of courses in the first end portion 111m. This allows the second end portion 112m to conform to the shape of the foot near the metatarsophalangeal joint, improving comfort. Conversely, the sum of the lengths in the extension direction of the bottom-side tip covering portion 112t and the second end portion 112m may be shorter than the sum of the lengths in the extension direction of the top-side tip covering portion 111t and the first end portion 111m. In this case, as described above, the intermediate position CP6 will not be the location with the most stitch reduction in the back-and-forth knitting section.

[0097] (I) Although not mentioned in the previous embodiment of the double-knitted sock 100, in addition to the yarn used to knit the inner and outer layers of each part, other yarns such as boucle yarn, ring yarn, chenille yarn, hollow yarn (yarn with a hollow cross-section), and highly crimped yarn may be combined. Furthermore, the inner and outer layers of each part of the double-knitted sock 100 may be subjected to treatments such as napping. This makes it possible to maximize the air content between the inner and outer layers of each part of the double-knitted sock 100.

[0098] (J) Although not mentioned in the description of the double-knitted sock 100 according to the previous embodiment, a yarn with low thermal conductivity, such as polypropylene yarn, may be used as the yarn for knitting the upper end covering portion 111t and the sole end covering portion 112t of the foot covering portion 110.

[0099] (K) In the double-knitted sock 100 according to the previous embodiment, the bulky portion PB of the bulky region RP of the inner layer extended toward the outer layer side (the side opposite to the skin when the double-knitted sock 100 is worn). However, the bulky portion PB of the bulky region RP of the inner layer may also extend toward the opposite side of the outer layer side (the side facing the skin when the double-knitted sock 100 is worn).

[0100] (L) In the double-knitted sock 100 according to the previous embodiment, a lower leg covering portion 150 and an opening portion 160 were present. However, the lower leg covering portion 150 and the opening portion 160 do not necessarily have to be present. If only the lower leg covering portion 150 is absent, the opening portion 160 will be provided on top of the Achilles tendon covering portion 130 and the ankle covering portion 140.

[0101] (M) In the double-knitted sock 100 according to the previous embodiment, the outer layer portion O12 of the bottom covering portion 112 of the foot covering portion 110 was knitted so that a straight band of bulky region RP and a straight band of low-bulk region RL were arranged alternately along the length direction Dl of the foot. However, as shown in Figure 10, a triangular roof-shaped band of bulky region RP and a triangular roof-shaped band of low-bulk region RL may be arranged alternately along the length direction Dl of the foot, or as shown in Figure 11, a triangular roof-shaped band of bulky region RP and a triangular roof-shaped band of low-bulk region RL may be arranged alternately along a direction intersecting the length direction Dl of the foot.

[0102] (O) In the above embodiment, the present invention was applied to a double-knit sock 100, but the present invention may also be applied to stockings or tights. In such cases, as shown in Figures 12 and 13, a thigh covering portion 160a is provided instead of the opening portion 160, and a panty portion 170, etc., is added above the thigh covering portion 160a. The thigh covering portion 160a and the panty portion 170, etc., of the double-knit tights 200 will be described below with reference to Figures 12 and 13.

[0103] The thigh covering portion 160a is a tubular portion for covering the thigh (the area from above the knee to the crotch) and extends upward from the upper end of the lower leg covering portion 150. Preferably, this thigh covering portion 160a has a tapered shape, gradually widening from the lower leg covering portion 150 side towards the panty portion 170 side.

[0104] The inner layer portion of the thigh covering portion 160a may be knitted in the same way as the inner layer portion I11 of the upper back covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the inner layer portion of the thigh covering portion 160a may be knitted with a partially high-bulk knit such as border pile knit).

[0105] The outer layer portion of the thigh covering portion 160a may be knitted in the same way as the outer layer portion O11 of the instep covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the outer layer portion of the thigh covering portion 160a may be knitted with a partially high-bulk knit such as border pile knit).

[0106] The panty portion 170 is the part that covers part or all of the area from the crotch to the waist. The thigh covering portion 160a extends downward from both sides of the panty portion 170 in the left-right direction.

[0107] The inner layer of the panty portion 170 may be knitted in the same way as the inner layer I11 of the upper side covering portion 111, such that a straight-line low-bulk region RL is provided between two straight-line high-bulk regions RP in the wale direction (in other words, the inner layer of the panty portion 170 may be knitted with a partially high-bulk knit such as a border pile knit).

[0108] The outer layer portion of the panty portion 170 may be knitted in the same way as the outer layer portion O11 of the upper side covering portion 111, such that a straight band of low-bulk region RL is provided between two straight bands of high-bulk region RP in the wale direction (in other words, the outer layer portion of the panty portion 170 may be knitted with a partially high-bulk knit such as a border pile knit).

[0109] Furthermore, at least one of the inner layer portion of the thigh covering portion 160a, the outer layer portion of the thigh covering portion 160a, the inner layer portion of the panty portion 170, and the outer layer portion of the panty portion 170 of the double-knit tights 200 may be knitted using other knitting methods.

[0110] Furthermore, when modified example (H) is applied to the double-knit tights 200, it is preferable that the parts other than the toe covering (excluding the panty portion 170) are knitted with a flat knit or other low-bulk knit, and the panty portion 170 is knitted with a border pile knit or other high-bulk knit. In such cases, the length of the toe covering is preferably in the range of 4 cm to less than 15 cm when laid flat, and more preferably in the range of more than 6 cm to less than 12 cm, for example, tights for adult men aged 20 to 79 with a foot length in the range of 217 mm to 289 mm, and for adult women aged 20 to 79 with a foot length in the range of 193 mm to 261 mm, and more preferably in the range of more than 5 cm to less than 11 cm when laid flat. According to anthropometric data from the Human Quality Research Center (HQL), for adult males aged 20 to 79, the foot length is between 217mm and 289mm, and the arch length is between 136mm and 191mm. For adult females aged 20 to 79, the foot length is between 193mm and 261mm, and the arch length is between 119mm and 178mm. Therefore, the tip covering can completely cover the proximal phalanx of the foot and extend to the vicinity of the toe side of the metatarsal bone of the fifth toe, while reducing the risk of the knitted fabric becoming too thick near the metatarsophalangeal joint, thus reducing the risk of tightness when wearing shoes.

[0111] Incidentally, if the tip covering does not completely cover the proximal phalanx of the foot, the tip covering, specifically the instep tip covering portion 111t of the instep covering portion 111 and the sole tip covering portion 112t of the sole covering portion 112 of the foot covering portion 110, may be extended so that the tip covering can completely cover the proximal phalanx of the foot and also cover up to the vicinity of the toe side of the metatarsal bones. In other words, in addition to the instep tip covering portion 111t of the instep covering portion 111 of the foot covering portion 110 and the bottom tip covering portion 112t of the bottom covering portion 112, the first end portion 111m (see Figure 9) of the instep base covering portion 111b of the instep covering portion 111 that extends from the boundary BO between the instep base covering portion 111b and the instep tip covering portion 111t toward the ankle covering portion 140, and the second end portion 112m (the portion located on the opposite side of the first end portion 111m shown in Figure 9) of the bottom base covering portion 112b of the bottom covering portion 112 that extends from the boundary between the bottom base covering portion 112b and the bottom tip covering portion 112t toward the heel covering portion 120, may also be made into a two-layer structure.

[0112] (P) Although not mentioned in the description of the double-knitted sock 100 according to the previous embodiment, the inner layer may be formed from a knitted fabric (knitted material) of a core-sheath yarn (hereinafter referred to as "core-sheath yarn") which has elasticity and bulkiness, formed by covering a core yarn with a sheath yarn, and a water-absorbing and quick-drying yarn. Examples of core-sheath yarns include single-covered yarn (SCY) and double-covered yarn (DCY). An example of a single-covered yarn referred to here is a yarn formed by using a polyurethane elastic yarn as the core yarn and wrapping a single nylon yarn as a sheath yarn around the core yarn. In such a case, the denier count of the core yarn is preferably in the range of 20 to 40, and the denier count of the sheath yarn is preferably in the range of 30 to 100.

[0113] Furthermore, the inner or outer layer may be formed from a knitted fabric (knitted material) made of a core-sheath yarn and a crimped yarn having elasticity and bulkiness (hereinafter referred to as "crimped yarn"). Examples of crimped yarns include woolly nylon (WN) and conjugate yarn. This knitted fabric may also be a pseudo-pile knitted fabric made by interweaving a plain knit course with core-sheath yarn and a tuck knit course with crimped yarn. Examples of the structure of this pseudo-pile knitted fabric include (i) to (viii) below. These knitted fabric structures (i) to (viii) will be described in detail below with reference to Figures 14 to 21. In knitted fabric structures (i) to (v), single covered yarn (SCY) is used as the core-sheath yarn and woolly nylon (WN) is used as the crimped yarn. Furthermore, in knitted fabric structures (vi) to (viii), a core sheath yarn with elasticity and bulkiness is used as the core sheath yarn, and a crimped yarn with elasticity and bulkiness is used as the crimp yarn. Also, in Figures 14 to 18, "○" indicates that it is knitted in plain knit, and "×" indicates that it is knitted in tuck knit. Also, in Figures 19 to 21, "○" indicates that it is knitted in plain knit, and "△" indicates that it is knitted in float knit.

[0114] Fabric structure (i) (see Figure 14) and fabric structure (ii) (see Figure 15) are knitted using a pseudo-border pile knit, which involves alternating courses of plain knit using core sheath yarn (1F and 3F) with courses of tuck knit and plain knit using crimped yarn, alternating every wale (2F and 4F). In fabric structure (i), as shown in Figure 14, the tuck knit stitches of 2F and 4F are on different wales, and the plain knit stitches of 2F and 4F are on different wales. In fabric structure (ii), as shown in Figure 15, the tuck knit stitches of 2F and 4F are on the same wale, and the plain knit stitches of 2F and 4F are on the same wale.

[0115] The knitted fabric structure (iii) (see Figure 16) is knitted in a pseudo-striped pile knit by alternating between plain knit courses using core sheath yarn (1F and 3F) and courses using crimped yarn that alternately repeat tuck knitting of 2 or more stitches and plain knitting of 1 stitch (2F and 4F). In 2F and 4F, the number of consecutive stitches knitted by tuck knitting is preferably in the range of 2 to 9 stitches, more preferably in the range of 2 to 6 stitches, and even more preferably in the range of 2 to 3 stitches. In Figure 16, the number of consecutive stitches knitted by tuck knitting is 3 in 2F and 4F.

[0116] The knitted fabric structure (iv) (see Figure 17) and knitted fabric structure (v) (see Figure 18) are knitted in a pseudo-striped pile knit by alternating courses of plain knitting with core sheath yarn (1F and 3F) and courses of alternating tuck knitting of 2 or more stitches and plain knitting of 2 or more stitches with crimped yarn (2F and 4F). In 2F and 4F, the number of consecutive stitches knitted by tuck knitting is preferably in the range of 2 to 9 stitches, more preferably in the range of 2 to 6 stitches, and even more preferably in the range of 2 to 3 stitches. Also, in 2F and 4F, the number of consecutive stitches knitted by plain knitting is preferably in the range of 2 to 9 stitches, more preferably in the range of 2 to 6 stitches, and even more preferably in the range of 2 to 3 stitches. In Figure 17, in 2F and 4F, the number of consecutive stitches knitted by tuck knitting is 3, and the number of consecutive stitches knitted by plain knitting is 3. Furthermore, in Figure 18, the number of consecutive stitches using tuck knitting is 5 on the 2nd and 4th floors, and the number of consecutive stitches using plain knitting is also 5.

[0117] The knitted fabric structure (vi) (see Figure 19) is knitted using a pseudo-border pile knit, which involves alternating between plain knit courses using core-sheath yarn (upper row 1F to 4F) and courses using crimped yarn that alternate between floating knits in the range of 2 to 6 stitches and plain knits in the range of 2 to 6 stitches (lower row 1F to 4F). This knitted fabric structure may also be knitted as the knitted fabric structure (vii) shown in Figure 20, or as the knitted fabric structure (viii) shown in Figure 21. In the knitted fabric structure (vii) shown in Figure 20, plain knit courses using core-sheath yarn (upper row 1F and 2F) and courses using crimped yarn that alternate between floating knits in the range of 2 to 6 stitches and plain knits in the range of 2 to 6 stitches (lower row 1F and 2F) are knitted together. Furthermore, in the knitted fabric structure (viii) shown in Figure 21, courses of plain knitting using core sheath yarn (1F to 4F of the upper row and 1F and 2F of the middle row) and courses of alternating floating knitting within a range of 2 to 6 stitches and plain knitting within a range of 2 to 6 stitches using crimped yarn (3F and 4F of the middle row and 1F to 4F of the lower row) are interwoven.

[0118] (Q) In the double-knitted sock 100 according to the previous embodiment, the inner layer was knitted from yarn having moisture-absorbing and heat-generating properties and yarn having water-absorbing and quick-drying properties, and the outer layer was knitted from heat-generating yarn. However, the yarn used to knit the inner layer is not particularly limited, and the inner layer may be knitted from, for example, the yarn used to knit the outer layer or other yarns. Similarly, the yarn used to knit the outer layer is not particularly limited, and the outer layer may be knitted from, for example, the yarn used to knit the inner layer or other yarns.

[0119] (R) In the double-knitted sock 100 according to the previous embodiment, the inner layer was knitted from moisture-absorbing and heat-generating yarn and moisture-absorbing and quick-drying yarn, and the outer layer was knitted from heat-generating yarn. However, the inner layer may be knitted with hydrophobic or water-repellent yarn, moisture-absorbing and quick-drying yarn or moisture-absorbing and heat-generating yarn as the backing yarn, and hydrophobic or water-repellent yarn as the outer yarn. In this case, it is preferable that the hydrophobic or water-repellent yarn has higher hydrophobicity or water-repellency than the yarn used to knit the outer layer. Furthermore, it is preferable that the outer yarn is the yarn that is exposed on the inside, that is, the yarn that touches the wearer's skin, and the backing yarn is the yarn that is not exposed on the inside, that is, the yarn that does not easily touch the wearer's skin. Furthermore, it is preferable that the outer yarn is knitted in a pile knit, a border pile knit, or knitted to form irregularities on the surface, and the backing yarn is knitted in a plain knit. In addition, it is preferable that the yarn selection and knitting are carried out so that the inner layer has better moisture absorption and quick-drying properties than the outer layer. By doing so, the double-knitted socks 100 become more absorbent of sweat and can prevent absorbed sweat from returning to the skin. Furthermore, if the outer yarn is knitted to form an uneven surface, the contact area of ​​sweat with the wearer's skin can be reduced, thereby reducing the wearer's feeling of being damp with sweat.

[0120] Furthermore, in the above example, the yarn used to knit the inner layer portion of the tip covering portion TP may be entirely pile knitted, or it may be border pile knitted. In this case, a portion of the inner layer portion of the first end 111m and the second end 112m may be tuck knitted. In this case, the water-absorbing and quick-drying yarn can come into contact with the wearer's skin in the tuck knitted area, thereby enhancing the sweat-absorbing effect.

[0121] Furthermore, in the example described above, the backing yarn (water-absorbing and quick-drying yarn) of the inner layer may be made thicker than the outer yarn (hydrophobic or water-repellent yarn), the outer yarn may be knitted in a border pile pattern, and the backing yarn may be knitted in a plain knit pattern. In this case, in the plain knit areas of the border pile knitted region, the backing yarn will be the yarn that touches the wearer's skin, and in the pile knitted region, the outer yarn will be the yarn that touches the wearer's skin. In this way, a portion of the water-absorbing and quick-drying yarn can touch the wearer's skin, thereby enhancing the sweat-absorbing effect.

[0122] Furthermore, in the above example, a combination of hydrophobic or water-repellent yarn and water-absorbing, quick-drying yarn may be used as the outer yarn. In this case, in addition to the effect of suppressing sweat from returning to the skin, the effect of sending sweat to the moisture-absorbing, heat-generating yarn in the outer layer can be enhanced, thereby increasing the warming effect.

[0123] Examples of hydrophobic yarns that can be used as the face yarn include long-fiber yarns such as polyester, polypropylene, and polyethylene, as well as short-fiber yarns such as polyester. Examples of water-repellent yarns that can be used as the face yarn include yarns that have been treated with a water-repellent finish to possess the aforementioned hydrophobic properties, as well as fibers made of fluororesin. Such water-repellent yarns may also be long-fiber yarns with hydrophilic properties such as nylon, or short-fiber yarns such as cotton and rayon that have been treated with a water-repellent finish.

[0124] Examples of hydrophobic yarns that can be used as backing yarns include elastic yarns such as hydrophobic synthetic fibers, and core-sheath yarns with an elastic core. Examples of elastic yarns that can be used as core yarns include polyurethane. Sheath yarns are elastic yarns such as hydrophobic synthetic fibers, and examples include long fiber yarns such as polyester, polypropylene, and polyethylene, and short fiber yarns such as polyester. In addition, examples of water-repellent yarns that can be used as backing yarns include yarns that have been treated with a water-repellent finish on elastic yarns such as hydrophobic synthetic fibers, and yarns that have been treated with a water-repellent finish on the sheath yarn of a core-sheath yarn with an elastic core. Examples of such sheath yarns include hydrophilic long fiber yarns such as nylon, and short fiber yarns such as cotton and rayon.

[0125] Methods for producing a core-sheath yarn include, for example, a method of spirally winding a sheath yarn around a core yarn. When spirally winding a sheath yarn around a core yarn, the sheath yarn is wound one or more times in an S-twist (right-hand twist) or Z-twist (left-hand twist). Furthermore, a water-repellent treatment may be applied to a yarn in which a water-repellent coating yarn has been applied around the core yarn. Also, a water-repellent treatment may be applied to a core-spun yarn in which the core yarn has been coated with short fibers or the like during the spinning process. Furthermore, a water-repellent treatment may be applied to a twisted yarn made by twisting an elastic yarn with other yarns. Examples of elastic yarns such as hydrophobic synthetic fibers include yarns that have undergone a crimping process by false-twisting, heat-fixing, and untwisting a hydrophobic yarn (woolly polyester, woolly nylon, etc.), and side-by-side conjugate yarns in which at least one or more fibers that are water-repellent and have different heat shrinkage rates are bonded together and then heat-treated to crimp them spirally.

[0126] Examples of water-absorbing and quick-drying yarns that can be used as the backing yarn include core-sheath yarns with an elastic yarn as the core. Examples of elastic yarns that can be used as the core include polyurethane. The sheath yarn is a yarn that has water-absorbing and quick-drying properties, and examples include hydrophobic yarns, hydrophilic yarns that have been treated with a hydrophilic coating, yarns with a special structure that enhances water absorption and quick-drying properties, and yarns that have been treated with a water-absorbing and quick-drying coating. Examples of hydrophobic yarns include synthetic fiber yarns such as polyester, polypropylene, nylon, and acrylic. Examples of hydrophilic yarns that have been treated with a hydrophilic coating include yarns in which hydroxyl groups or carboxyl groups have been added to polyester or nylon. Examples of yarns with a special structure that enhances water absorption and quick-drying properties include yarns with irregular cross-sections and multifilament yarns. Examples of yarns that have been treated with a water-absorbing and quick-drying coating include processed yarns that promote moisture movement by surface modification or coating, and composite fiber yarns that combine hydrophilic and hydrophobic fibers. More specific examples of water-absorbing and quick-drying yarns include, for example, polyester / polyurethane composite yarns such as LYCRA® fr. FX30 / 75, functional nylon yarns such as Wavelon® Ny, and polyester yarns.

[0127] In addition, in such cases, the outer layer may be knitted with a water-absorbing, quick-drying or moisture-absorbing, heat-generating yarn as the backing yarn and a moisture-absorbing, heat-generating yarn as the outer yarn. Here, it is preferable that the outer yarn is a yarn that is exposed to the outside, and the backing yarn is a yarn that is not exposed to the outside. It is also preferable that the outer yarn is knitted in a pile knit or border pile knit and the backing yarn is knitted in a plain knit. By doing so, the double-knitted sock 100 can easily generate heat from the moisture-absorbing, heat-generating yarn in the outside air, and can also quickly evaporate the wearer's sweat. In addition, a combination of a moisture-absorbing, heat-generating yarn and a hydrophobic or water-repellent yarn may be used as the outer yarn. In such cases, it is preferable to concentrate the moisture-absorbing, heat-generating yarn in the area to be heated.

[0128] Examples of moisture-absorbing and heat-generating yarns that can be used as the backing yarn include core-sheath yarns with an elastic yarn as the core. Examples of elastic yarns that can be used as the core include polyurethane. The sheath yarn is a yarn that has moisture-absorbing and heat-generating properties, such as a yarn that has moisture absorption properties, a yarn that has undergone heat-generating processing on a yarn that has moisture absorption properties, a yarn with a special structure that enhances moisture-absorbing and heat-generating properties, or a yarn that has undergone moisture-absorbing and heat-generating processing. Examples of yarns that have moisture absorption properties include natural fiber yarns such as cotton, linen, and silk, regenerated cellulose fiber yarns such as rayon, cupro, and lyocell, semi-synthetic fiber yarns such as acetate and triacetate, or composite yarns thereof. Examples of yarns that have undergone heat-generating processing include synthetic fiber yarns such as polyester and nylon to which hydrophilic groups or heat-generating compounds have been added. Examples of yarns with special structures that enhance moisture absorption and heat generation include yarns with irregular cross-sections and multifilament yarns. Examples of yarns that have undergone moisture absorption and heat generation processing include yarns into which hygroscopic polymers or heat-generating compounds have been kneaded, and composite fiber yarns that combine hydrophilic and hydrophobic fibers.

[0129] (S) In the double-knitted sock 100 according to the previous embodiment, the inner layer was knitted from moisture-absorbing and heat-generating yarn and moisture-absorbing and quick-drying yarn. However, the inner layer may be knitted with hydrophobic or water-repellent yarn and moisture-absorbing and quick-drying yarn as the outer yarn, together with the inner yarn. In this case, it is preferable that the hydrophobic or water-repellent yarn has higher hydrophobicity or water-repellency than the yarn used to knit the outer layer. Furthermore, it is preferable that the outer yarn is the yarn that is exposed on the inside, i.e., the yarn that touches the wearer's skin, and the inner yarn is the yarn that is not exposed on the inside, i.e., the yarn that does not easily touch the wearer's skin. It is preferable that the hydrophobic or water-repellent yarn and moisture-absorbing and quick-drying yarn are knitted alternately. It is preferable that the bulky part of the inner layer is knitted with hydrophobic or water-repellent yarn, and the low bulky part of the inner layer is knitted with moisture-absorbing and quick-drying yarn. Furthermore, it is preferable that the inner yarn is hydrophobic or water-repellent yarn, moisture-absorbing and quick-drying yarn, or a yarn that has moisture-absorbing and heat-generating properties. Furthermore, it is preferable that the outer layer is knitted with at least one of the following: a water-absorbing, quick-drying yarn and a moisture-absorbing, heat-generating yarn. By doing so, the double-knitted sock 100 can suppress the absorption of sweat from returning to the skin side and can quickly dry the sweat. Moreover, if the two types of outer yarns described above are knitted alternately, the effect can be further enhanced. In addition, if the bulky part of the inner layer is knitted with a hydrophobic or water-repellent yarn, and the less bulky part of the inner layer is knitted with a water-absorbing, quick-drying yarn, it is possible to suppress the accumulation of sweat in the bulky part. Furthermore, if the backing yarn is a hydrophobic or water-repellent yarn, it is possible to easily transfer the sweat produced by the wearer to the outer layer. Also, if the backing yarn is a water-absorbing, quick-drying yarn, it is possible to easily transfer the sweat produced by the wearer from the outer yarn to the backing yarn, and consequently, the sweat can be quickly dried. Furthermore, when the backing thread is made of a moisture-absorbing, heat-generating yarn, it becomes easier to transfer the sweat produced by the wearer from the outer thread to the backing thread, which in turn promotes heat generation by the backing thread.

[0130] Specific examples of hydrophobic yarns usable as face yarns, hydrophobic yarns usable as backing yarns, water-absorbing and quick-drying yarns usable as backing yarns, and moisture-absorbing and heat-generating yarns usable as backing yarns are shown in the above modification (R). Furthermore, water-absorbing and quick-drying yarns that can be used as face yarns include, for example, hydrophilic yarns, hydrophobic yarns that have been treated to be hydrophilic, hydrophobic yarns with enhanced water absorption, and yarns that are highly water-absorbing and hygroscopic. Hydrophilic yarns include, for example, natural fiber yarns such as cotton, linen, Japanese paper, and silk, regenerated fiber yarns made from regenerated cellulose fibers such as rayon, polynosic, cupro, and lyocell, or protein fibers using chitin, chitosan, casein, etc., semi-synthetic fiber yarns made from acetate fibers such as acetate and triacetate, and synthetic fiber yarns with hydrophilic groups such as nylon. Yarns that have been treated to be hydrophilic are, for example, synthetic fiber yarns that do not have hydrophilic groups such as polyester, polyethylene, polypropylene, and acrylic, to which hydroxyl groups or carboxyl groups have been added. Hydrophobic yarns with enhanced water absorption include, for example, multifilament yarns and irregular cross-section yarns. Examples of yarns with high water absorption and moisture-absorbing properties include washi paper, rayon, acetate and other cellulose-based fibers, and silk yarn.

[0131] (T) In the double-knitted sock 100 according to the previous embodiment, the outer layer was knitted from heat-generating yarn. However, the outer layer may be knitted with hydrophobic or water-repellent yarn as the outer yarn, together with the inner yarn. This can suppress discomfort and coldness to the wearer caused by moisture entering from the outside, such as rain. In this example, at least one of a water-absorbing, quick-drying yarn and a moisture-absorbing, heat-generating yarn may be used as the inner yarn. It is preferable that this inner yarn is elastic. It is also preferable that this inner yarn is plain knitted. Furthermore, in the double-knitted sock 100 according to this example, it is preferable that the inner layer is knitted from outer yarn and inner yarn. In this case, it is preferable that the outer yarn is a hydrophobic or water-repellent yarn. It is also preferable that this outer yarn is a water-absorbing, quick-drying yarn. Furthermore, it is preferable that the inner yarn is a hydrophobic or water-repellent yarn. In this case, it is preferable that the inner yarn is a yarn that is less hydrophobic or generates less water than the outer yarn. It is also preferable that both the outer yarn and the inner yarn are plain knitted. When moisture-wicking and quick-drying yarn is used as the outer yarn, it can quickly evaporate the wearer's sweat.

[0132] Specific examples of hydrophobic and water-repellent yarns usable as face yarns, hydrophobic and water-repellent yarns usable as backing yarns, water-absorbing and quick-drying yarns usable as backing yarns, and moisture-absorbing and heat-generating yarns usable as backing yarns are shown in the above modification (R), and specific examples of water-absorbing and quick-drying yarns usable as face yarns are shown in the above modification (S).

[0133] Each of the above-mentioned variations may be adopted individually, or they may be combined as appropriate within the bounds of consistency.

[0134] <Verification Example> The present invention will be described in more detail below with reference to verification examples. However, the present invention is not limited by the verification examples shown below.

[0135] We have prepared the following three types of socks, A through C. First, we will describe the details of each sock.

[0136] Sock A (the sock according to the present invention) has a two-layer structure. The outer and inner layers of sock A are knitted using a partial bulky knit, where there are 2 bulky areas and 2 low-bulk areas in the wale direction. The outer yarn of the outer layer of sock A is a moisture-absorbing, heat-generating yarn (60% acrylic, 40% rayon, cotton count 52 / 1), and the inner yarn of the outer layer of sock A is a yarn in which a polyurethane elastic yarn is used as the core yarn and a polyester yarn is wrapped around the core yarn as a sheath yarn (core yarn 30d / sheath yarn 75d). The outer yarn of the inner layer of sock A is a water-absorbing, quick-drying yarn (100% polyester, 75d / 72f), and the inner yarn of the inner layer of sock A is a yarn in which a polyurethane elastic yarn is used as the core yarn and a polyester yarn is wrapped around the core yarn as a sheath yarn (core yarn 30d / sheath yarn 75d).

[0137] Sock B (the previous sock) has a two-layer structure. The outer layer of sock B is knitted using a partial bulky knit, with 6 bulky areas and 4 low-bulk areas in the wale direction. The face yarn that makes up the outer layer of sock B is a moisture-absorbing, heat-generating yarn (60% acrylic, 40% rayon, cotton count 52 / 1), and the back yarn that makes up the outer layer of sock B is a yarn with a polyurethane elastic yarn core and polyester yarn wrapped around that core as a sheath yarn (core yarn 30d / sheath yarn 75d). The inner layer of sock B is knitted using a plain knit. The face yarn that makes up the inner layer of sock B is a water-absorbing, quick-drying yarn (100% polyester, 75d / 72f), and the back yarn that makes up the inner layer of sock B is a yarn with a polyurethane elastic yarn core and polyester yarn wrapped around that core as a sheath yarn (core yarn 30d / sheath yarn 75d).

[0138] Sock C (the previous sock) has a single-layer structure. Sock C is knitted using a plain knit. The outer yarn of sock C is a moisture-absorbing and heat-generating yarn (100% cotton, cotton count 32 / 1), and the inner yarn of sock C is a yarn in which a polyurethane elastic yarn is used as the core yarn and a polyester yarn is wrapped around the core yarn as a sheath yarn (core yarn 30d / sheath yarn 75d).

[0139] Then, under conditions of 20°C room temperature and 65% relative humidity, these socks (test specimens) were subjected to a dry contact test using a ThermoLab KES-F7 (Kato Tech Co., Ltd.). The test method was as follows: First, the socks were placed on a heating plate set to a constant temperature (ambient temperature + 10°C) using the ThermoLab KES-F7 (generally under a 30 cm / sec airflow). The amount of heat transferred through the socks was then determined. In addition, the amount of heat transferred when the socks were not set was determined, and the amount of heat transferred, heat retention coefficient, intrinsic clo value, and total clo value were calculated according to the following formula (see Table 1).

[0140] ·Amount of heat transferred (w / m 2 *°C) = Measured value (W) / (Hot plate area (m²) 2 ) x temperature (℃)) • Heat retention rate (%) = ((Blank measurement (w / m) 2 (°C) - Sample transfer heat (W / m²)2 ·℃)) / Blank Measured value (w) × 100 • Eigenvalue (clo) = 6,461 / U2 Total clo value (clo) = 6,461 / U1 U2 :(Upb×U1) / (Upb-U1) U1: Sample transfer heat (w / m 2 (°C) Upb:Blank amount of heat transferred (w / m 2 (°C)

[0141] [Table 1]

[0142] A lower value for heat transfer indicates better heat retention, while higher values ​​for heat retention coefficient, intrinsic clo value, and total clo value indicate better heat retention. Table 1 shows that sock A (sock according to the present invention) has better heat retention than socks B and C (conventional socks).

Claims

1. A first stratum comprising a first partially elevated region consisting of a first partially elevated stratum having a plurality of first elevated areas and a plurality of first lower areas having a lower elevation than the first elevated areas, A second partially elevated stratum comprising a second partially elevated stratum having a plurality of second elevated areas and a plurality of second lower areas having a lower elevation than the second elevated areas, and at least one second stratum including a second partially elevated stratum. Equipped with, The first elevated portion extends toward the side of the second layer, The second elevated portion extends toward the side of the first layer, The first bulky portion faces the second low-bulky portion, The second raised portion faces the first lower portion. Multi-layered braided attachment.

2. The first layer is located inside the second layer. The multi-layered braiding device according to claim 1.

3. The second layer is located inside the first layer. The multi-layered braiding device according to claim 1.

4. The multi-layered braided attachment can be attached to at least the foot, The first and second layers of soil constitute a bottom covering portion that covers the bottom side of the foot and / or an instep covering portion that covers the top side of the foot. The multi-layered braiding device according to claim 1.

5. The multi-layered braided attachment can be attached to at least the foot, The first and second layers are provided only in the tip covering portion that covers the tip of the foot. The foot further comprises a non-tip covering portion that covers the foot portion other than the tip of the foot, The aforementioned non-tip covering portion is made of knitted fabric. The multi-layered braiding device according to claim 1.

6. The ratio of the length of the tip covering portion to the total length of the bottom covering portion that covers the sole of the foot is within the range of 0.24 to 0.

4. The multi-layered braiding device according to claim 5.

7. The aforementioned fabric is a pile knit fabric. The multi-layered braiding device according to claim 5.

8. The multi-layered braided attachment can be attached to at least the leg, The first and second layers are provided only in the tip covering portion that covers the tip of the foot. The leg portion other than the tip of the foot is further provided with a non-tip covering portion, The aforementioned non-tip covering portion is made of knitted fabric. The multi-layered braiding device according to claim 1.

9. The length of the aforementioned tip covering is within the range of 4 cm to less than 15 cm when laid flat. The multi-layered braiding device according to claim 8.

10. The fabric is a plain knit fabric. The multi-layered braided attachment device according to claim 9.

11. The second lower portion is adjacent to at least two of the second higher portions. The multi-layered braiding device according to claim 1.

12. Both the second bulky portion and the second low-bulky portion are band-shaped. The second low-bulk portion is adjacent to the second high-bulk portion on both sides in the short direction. The multi-layered braiding device according to claim 11.

13. The first low-bulk portion is adjacent to at least two of the first high-bulk portions. The multi-layered braiding device according to claim 1.

14. Both the first bulky portion and the first low-bulky portion are band-shaped. The first low-bulk portion is adjacent to the first high-bulk portion on both sides in the short direction. The multi-layered braiding device according to claim 13.

15. The first layer is located outside the second layer, The second layer includes a region consisting of a water-absorbing and quick-drying fabric having higher water absorption and quick-drying properties than the first partially elevated region. The multi-layered braiding device according to claim 1.

16. The region consisting of the aforementioned water-absorbing and quick-drying knitted fabric is the second bulky region. The multi-layered braiding device according to claim 15.

17. The structure further comprises at least one third knitted layer including a region made of a moisture-absorbing, heat-generating knitted fabric having moisture-absorbing and heat-generating properties, The aforementioned moisture-absorbing, heat-generating knitted fabric is knitted from yarn that has moisture-absorbing and heat-generating properties. The aforementioned water-absorbing and quick-drying knitted fabric is knitted from yarn containing water-absorbing and quick-drying yarn. Either the second or third layer is located in the innermost layer. The multi-layered braiding device according to claim 15.

18. The aforementioned water-absorbing and quick-drying knitted fabric is knitted from face yarn and back yarn, The aforementioned surface yarn contains a yarn that has moisture-absorbing and heat-generating properties, or a yarn that absorbs water and dries quickly. If the face yarn contains the moisture-absorbing and heat-generating yarn, the back yarn contains the water-absorbing and quick-drying yarn, and if the face yarn contains the water-absorbing and quick-drying yarn, the back yarn contains the moisture-absorbing and heat-generating yarn. The multi-layered braiding device according to claim 15.

19. The aforementioned water-absorbing and quick-drying knitted fabric is a cross-knitted fabric of core sheath yarn and water-absorbing and quick-drying yarn. The multi-layered braiding device according to claim 15.

20. The aforementioned water-absorbing and quick-drying knitted fabric is a cross-knitted fabric made of a yarn having moisture-absorbing and heat-generating properties and a water-absorbing and quick-drying yarn. The multi-layered braiding device according to claim 15.

21. The first bulky knitted fabric is a first pile knitted fabric having partial pile knitting, The second bulky knitted fabric is a second pile knitted fabric having a partial pile knit, The pile portion of the first partial pile knit fabric extends toward the second knit layer, The pile portion of the second partial pile knit fabric extends toward the first knitted layer. The multi-layered braiding device according to claim 1.

22. The first and / or second knitted layers are constructed using a pseudo-pile knit, which is formed by interweaving (A) a plain knit course using core-sheath yarn that is elastic and bulky, in which a sheath yarn is covered with a core yarn, and (B) a tuck knit course using crimped yarn that is elastic and bulky. The multi-layered braiding device according to claim 1.

23. The first knitted layer and / or the second knitted layer is a cross-knit fabric of (a) core-sheath yarn having elasticity and bulkiness, in which a sheath yarn is covered with a core yarn, and (b) crimped yarn having elasticity and bulkiness. The multi-layered braiding device according to claim 15.

24. The second layer is located inside the first layer and has higher hydrophobicity or water-repellent properties than the first layer. The multi-layered braiding device according to claim 1.

25. The aforementioned second layer is made up of face threads and back threads, The aforementioned face yarn and back yarn have higher hydrophobicity or water repellency than the yarn used to weave the first knitted layer. The multi-layered braiding device according to claim 24.

26. The aforementioned second layer is made up of face threads and back threads, The aforementioned surface yarn has higher hydrophobicity or water repellency than the yarn used to weave the first knitted layer. The aforementioned backing yarn is a water-absorbing and quick-drying yarn. The multi-layered braiding device according to claim 24.

27. The aforementioned second layer is made up of face threads and back threads, The aforementioned surface yarn has higher hydrophobicity or water repellency than the yarn used to weave the first knitted layer. The aforementioned backing yarn is a yarn that has moisture-absorbing and heat-generating properties. The multi-layered braiding device according to claim 24.

28. The first knitted layer is knitted with at least one of the following: a water-absorbing, quick-drying yarn and a yarn that has moisture-absorbing, heat-generating properties. The multi-layered braiding device according to claim 24.

29. The second layer is made up of surface threads and back threads and is located inside the first layer. The aforementioned surface yarn includes yarn that is more hydrophobic or water-repellent than the yarn used to knit the first knitted layer, and water-absorbing and quick-drying yarn. The multi-layered braiding device according to claim 1.

30. The yarns that are more hydrophobic or water-repellent than the yarns used to weave the first knitted layer are knitted alternately with the water-absorbing and quick-drying yarns. The multi-layered braided attachment device according to claim 29.

31. The second bulky portion is made of yarn that is more hydrophobic or water-repellent than the yarn used to make the first woven layer. The second bulky portion is knitted with the water-absorbing and quick-drying yarn. The multi-layered braided attachment device according to claim 29.

32. The aforementioned backing yarn is a yarn that is more hydrophobic or water-repellent than the yarn used to weave the first knitted layer. The multi-layered braided attachment device according to claim 29.

33. The aforementioned backing yarn is a water-absorbing and quick-drying yarn. The multi-layered braided attachment device according to claim 29.

34. The aforementioned backing yarn is a yarn that has moisture-absorbing and heat-generating properties. The multi-layered braided attachment device according to claim 29.

35. The first layer is made up of a first surface thread and a first back thread, and is located outside the second layer. The first face yarn is a yarn that is more hydrophobic or water-repellent than the first back yarn. The multi-layered braiding device according to claim 1.

36. The aforementioned second layer is made from the second surface thread and the second back thread, The second face yarn is a yarn that is more hydrophobic or water-repellent than the second back yarn. The multi-layered braiding device according to claim 35.

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