COLD PROTECTION MATERIAL

Abstract

cold protection material (10) used for a cold-resistant garment comprising: a front fabric (12) that forms a front fabric of the cold-resistant garment or forms a fabric arranged within the front fabric; a backing fabric (14) arranged on a back side of the fronting fabric (12); two dividing elements (16) that form a space (20) between the front fabric (12) and the back fabric (14); a filling material (18) made from down or feathers taken up in the space (20); an air-permeable element (31) arranged to cover a ventilation hole (35) provided in the front fabric (12) or the back fabric (14); and a sealing element (32) which is attached to the air-permeable element (31) in such a way that ventilation is prevented at least in a section of the air-permeable element (31) facing the ventilation hole (35), wherein the air-permeable element (31) allows ventilation at a section other than a section to which the sealing element (32) is attached.

Description

Technical field

[0001] The present invention relates to a cold protection material. State of the art

[0002] As disclosed in the following patent literature 1 and 2, a cold-insulating material used for a cold-resistant garment is known from the prior art. This type of cold-insulating material is configured such that a first fabric and a second fabric are connected by a plurality of strip elements, and a filling material, such as down or feathers, is filled into a space divided by adjacent strip elements. This ensures a heat-retaining property. Since the purpose of the cold-resistant garment is to ensure a heat-retaining property, the first fabric and the second fabric are made of a material with low air permeability, so that air does not escape from the space divided by the strip elements.

[0003] As previously described, the cold-resistant garment can expand due to the expansion of the air in the cavity when heat is applied, for example during cleaning, because the air in the cavity has difficulty escaping the cold-insulating material. Therefore, there is a need to allow the air in the cavity to escape when necessary. However, the filler material in the cavity will leak out if a mechanism to allow the air to escape is provided. List of oppositions patent literature Patent literature 1: JP 6 226 703 B2 Patent literature 2: JP 6 247 431 B1

[0004] US 5,458,516 A describes a garment that inflates with atmospheric pressure and has an inner and an outer layer that define a confined space containing a compressible material. The compressible material possesses elastic and strong properties such that it compresses under atmospheric conditions when the air pressure in the confined space is reduced to sub-atmospheric pressure. An air passage is provided that allows air to enter and exit the confined space, but not water, when a seal is broken to close the passage. The garment is stored deflated, and when the seal is broken, the space can fill with atmospheric air.This causes the pressure in the space to rise to atmospheric pressure, and the compressible material expands, separating the inner and outer layers and creating insulation between them.

[0005] JP H07-256 804 A describes a cold-weather protective garment with a pocket section in which thermal bridges are minimal. The garment comprises, in the thickness direction, a first fabric, a filling, and a second fabric. The garment has a first part and a second part in a direction orthogonal to the thickness direction and includes a pocket section arranged between the first and second parts. The garment is characterized in that the first part has a first belt-like gusset that connects the first and second fabrics of the first part in an area that at least touches the pocket section, and that the second part has a second belt-like gusset that connects the first and second fabrics of the second part in an area that at least touches the pocket section.

[0006] JP 2005-36 323 A describes a cold protection material comprising a first fabric and a second fabric joined together to form storage areas between the first fabric and the second fabric, and a filling material being filled into each storage area, wherein a connecting element joins the first fabric and the second fabric, a first single-sided adhesive tape with a first adhesive surface on one side thereof, and a second single-sided adhesive tape with a second adhesive surface on one side thereof, wherein the first adhesive surface and the second adhesive surface are opposite each other, and the first single-sided adhesive tape and the second single-sided adhesive tape are sewn together.One side of the first adhesive surface and one side of the opposite second adhesive surface are glued to the back of the first fabric, and the other side of the first adhesive surface and the other side of the opposite second adhesive surface are glued to the back of the second fabric, thus joining the first and second fabrics. Brief description of the invention

[0007] One object of the present invention is to prevent the filler from escaping into a space between a front fabric and a back fabric, while allowing air to enter and exit the space between the front fabric and the back fabric.

[0008] A cold-protection material according to one aspect of the present invention is a cold-protection material used for a cold-resistant garment and comprises: a front fabric forming a front fabric of the cold-resistant garment or forming a fabric arranged within the front fabric; a back fabric arranged on a reverse side of the front fabric; two dividing elements forming a space between the front fabric and the back fabric; a filling material made of down or feathers contained in the space; an air-permeable element arranged to cover a ventilation hole provided in the front fabric or the back fabric; and a sealing element attached to the air-permeable element in such a way as to prevent ventilation at least in a section of the air-permeable element facing the ventilation hole.The air-permeable element allows ventilation on a section other than the section to which the sealing element is attached.

[0009] A cold-insulating material according to a further aspect of the present invention is a cold-insulating material used for a cold-resistant garment and comprises: a front fabric forming a front fabric of the cold-resistant garment or forming a fabric arranged within the front fabric; a back fabric arranged on the reverse side of the front fabric; two partition elements forming a space between the front fabric and the back fabric; a filling material made of down or feathers contained in the space; and an air-permeable element made of an air-permeable material and arranged to cover a ventilation hole provided in the front fabric or the back fabric. The air-permeable element is made of a non-woven fabric or a foam with a thickness of 1 mm or more. Brief description of the drawings Fig. Figure 1 is a perspective view of a cold protection material. Fig. Figure 2 shows a view of a back panel using the cold protection material. Fig. Figure 3 is a schematic view of a subdivision element used for the cold protection material. Fig. 4 is a modification of a ventilation layer provided in the subdivision element. Fig. 5A is a view for describing a fan used for the cold protection material, and Fig. 5A and Fig. 5C are views for describing an airflow. Fig. Figure 6 is a view describing an air-permeable element provided in the fan. Fig. Figure 7 is a view of the cold protection material when the fan is attached to a front fabric in a case where the front fabric and a back fabric are each a layer. Fig. 8A is a view of the cold protection material when the fan is attached to a front inner fabric, and Fig. 8B is a view of the cold protection material when the fan is attached to a front fabric in a case where the front fabric has two layers and the back fabric has one layer. Fig. 9A is a view of the cold protection material when the fan is attached to the front inner fabric, and Fig. 9B is a view of the cold protection material when the fan is attached to the front fabric in a case where the front fabric and the back fabric each have two layers. Fig. Figure 10 shows a view of the cold protection material when the fan is attached to the backing fabric in a case where the front fabric and backing fabric are each a layer. Fig. Figure 11A shows a view of the cold protection material when the fan is attached to the back inner fabric, and Fig. 11B is a view of the cold protection material when the fan is attached to a rear fabric in a case where the front fabric has one layer and the back fabric has two layers. Fig. 12A is a view of the cold protection material when the fan is attached to the back inner fabric, and Fig. 12B is a view of the cold protection material when the fan is attached to the back fabric in the case where the front fabric and the back fabric each have two layers. Fig. Figure 13 is a view illustrating a modification of the fan. Fig. Figure 14 is a view illustrating a further modification of the fan. Fig. Figure 15 shows a view of the cold protection material in a case where the dividing element has a curved shape. Fig. Figure 16 shows a view of the cold protection material in another case where the dividing element has a curved shape. Fig. Figure 17 is a view describing the cold protection material according to a second embodiment. Description of embodiments

[0010] The following describes embodiments with reference to the accompanying drawings. It should be noted that the following embodiments are examples that implement the present invention and are not intended to limit its technical scope. (First embodiment)

[0011] A cold protection material 10, which is in Fig. Figure 1 illustrates a material used as a component of a cold-resistant garment with heat-retaining properties. The cold-resistant garment is, for example, a garment such as a jacket, vest, trousers, coat, blouson, or anorak, and is a garment with excellent heat-retaining properties. The cold-protection material 10 can be used as a back panel 1 of the jacket, for example, as shown in Figure 1. Fig. Figure 2 illustrates how it should be configured. It should be noted that Fig. Figure 1 illustrates only a portion of the cold-protection material 10 that forms the back section 1. The cold-protection material 10 may not be designed to form the back section 1, but may be designed to form a front section, a side section, a sleeve, a collar, and the like. The cold-protection material 10 may also be designed to form the waistband and inseam of the trousers.

[0012] As in Fig. As illustrated in Figure 1, the cold protection material 10 has a front fabric 12, a back fabric 14, at least two subdivision elements 16 and 16 and a filler 18.

[0013] The front fabric 12 can form the outer layer (the front fabric) of the cold-resistant garment, or it can form an inner fabric (for example, a fabric forming a down pack) located within the front fabric. The front fabric 12 is made of a synthetic fiber fabric with no air permeability or a synthetic fiber fabric with almost no air permeability (or a low ventilation rate). That is, the front fabric 12 is made of a fabric with a ventilation rate of 1 cm. 3 / cm 2 / s or less produced.

[0014] The backing fabric 14 is a fabric arranged within the fronting fabric 12 and forms, for example, a backing fabric of the cold-resistant garment. However, the backing fabric 14 does not necessarily have to form the backing fabric of the cold-resistant garment. The backing fabric 14 can, for example, form the inner fabric located within the backing fabric of the cold-resistant garment (for example, if the cold-resistant garment has a four-layer structure, a fabric of the third layer from the outermost layer). The backing fabric 14 is made of a synthetic fiber fabric with no air permeability or a synthetic fiber fabric with almost no air permeability (or a low ventilation rate). That is, the backing fabric 14 is made of a fabric with a ventilation rate of 1 cm. 3 / cm 2 / s or less produced.

[0015] Each of the two dividing elements 16 and 16 is an element that connects the front fabric 12 and the back fabric 14 and is formed in a strip shape that is elongated in one direction. The two dividing elements 16 and 16 extend linearly in a parallel position. However, the present embodiment is not limited to this shape and each dividing element 16 may be curved or may not be parallel to each other.

[0016] A front surface 16a (that is, one of the surfaces perpendicular to one direction) of the subdivision element 16 is bonded to the front material 12. A back surface 16b of the subdivision element 16, which faces one side opposite the front surface 16a, is bonded to the back material 14. The subdivision element 16 and the front material 12 are bonded together using a thermoplastic adhesive (hot melt adhesive), a solvent-based adhesive, a moisture-curing adhesive, a UV-curing adhesive, or an acrylic adhesive (non-crosslinking adhesive). The subdivision element 16 and the back material 14 are bonded together in the same way.

[0017] The two subdivision elements 16 and 16 are coupled to the front fabric 12 and the back fabric 14, such that a space 20 is formed by the front fabric 12, the back fabric 14 and the two subdivision elements 16 and 16. That is, the two subdivision elements 16 and 16 are elements for forming a closed space 20 between the front fabric 12 and the back fabric 14.

[0018] Each subdivision element 16 is made of a flexible material. However, each subdivision element 16 is soft enough not to deform under the weight of the front surface 16a or the back surface 16b, thus preventing any reduction in the distance between the front surface 16a and the back surface 16b. That is, since each subdivision element 16 has sufficient rigidity not to be crushed or bent under the weight of the front surface 12 or the back surface 14, even when the space 20 is not filled with the filler 18, the distance between the front surface 12 and the back surface 14 near the subdivision element 16 is not reduced.

[0019] Each subdivision element 16 has an air permeability. Therefore, since air can penetrate the subdivision element 16, air can flow through the subdivision element 16 between adjacent spaces 20.

[0020] The filling material 18 is contained within the space 20. The filling material 18 is a material made of down or feathers and contributes to the heat-retaining properties of the cold-insulating material 10 by being enclosed within the space 20.

[0021] As in Fig. As illustrated in Figure 3, each subdivision element 16 is made of a double raschel knit fabric. That is, the subdivision element 16 is configured in a three-layer structure comprising a front fabric 24, a back fabric 25, and a ventilation layer 26. A front surface of the front fabric 24 forms the front surface 16a of the subdivision element 16, and a back surface of the back fabric 25 forms the back surface 16b of the subdivision element 16. The front surface of the front fabric 24 is bonded to the front fabric 12, and the back surface of the back fabric 25 is bonded to the back fabric 14. The ventilation layer 26 is then bonded to a back surface of the front fabric 24 and to a front surface of the back fabric 25.

[0022] Both the front fabric 24 and the back fabric 25 can, for example, be made of a blended fabric (woven fabric) of nylon and polyurethane, or they can be made of a polyester fabric (woven fabric). Furthermore, the front fabric 24 and the back fabric 25 can be made of different fabrics.

[0023] The ventilation layer 26 is a section that ensures air permeability in the partition element 16 and is located between the front fabric 24 and the back fabric 25. The ventilation layer 26 is made of a knitted fabric 26a. The knitted fabric 26a is knitted into the front fabric 24 and the back fabric 25. Therefore, the front fabric 24 cannot be easily separated from the ventilation layer 26, and likewise, the back fabric 25 cannot be easily separated from the ventilation layer 26.

[0024] It should be noted that the subdivision element 16 is not limited to an element made of a double raschel knit fabric. It should also be noted that the ventilation layer 26 can be made of a foam 26b instead of the knit fabric 26a. In this case, the ventilation layer 26 is made of the foam 26b, which has the shape of a rectangular parallelepiped, and the foam 26b is bonded to the front fabric 24 and the back fabric 25. Furthermore, as shown in Fig. As illustrated in Figure 4, laminate layers 26c and 26d are bonded to a front surface and a rear surface of the foam 26b, respectively. The front fabric 24 can be bonded to the laminate layer 26c on the front side, and the rear fabric 25 can be bonded to the laminate layer 26d on the back side. Furthermore, the ventilation layer 26 can be made of a non-woven fabric.

[0025] The subdivision element 16 can be made from foam instead of double raschel knit fabric.

[0026] In the cold insulation material 10, the space 20 is desirablely ventilated. Therefore, as shown in Fig. 1 and Fig. Figure 5A illustrates that the cold insulation material 10 is equipped with a fan 30 to allow air to enter and exit the cavity 20. That is, the cold insulation material 10 is fitted with the fan 30 so that air in the cavity 20 can escape to the outside of the cold insulation material 10, or outside air can be drawn into the cavity 20. However, the fan 30 is configured such that the filler 18 does not leave the cavity 20 when air escapes from the cavity 20 to the outside.

[0027] Fig. 1 and Fig. Figure 5A illustrates a configuration where the fan 30 is located on the front fabric 12, but the fan 30 can also be located on the back fabric 14. Furthermore, each gap 20 can be equipped with the fan 30, or one fan 30 can be provided for the plurality of gaps 20. Furthermore, they illustrate Fig. 1 and Fig. 5A is a configuration in which the fan 30 is located in the space 20, but the fan 30 can also be located outside the space 20. For example, the fan 30 can be located on the front of the front fabric 12 or on the back of the back fabric 14.

[0028] As in Fig. As illustrated in Figure 5A, the fan 30 has an air-permeable element 31 and a sealing element 32. The air-permeable element 31 is made of an air-permeable material and is arranged to cover a ventilation hole 35 provided in the front fabric 12. Therefore, air in the space 20 flows outwards through the ventilation hole 35 and the air-permeable element 31. The sealing element 32 is made of an airtight material and prevents ventilation at a position opposite the ventilation hole 35, while ensuring air permeability through the air-permeable element 31.

[0029] As in Fig. As illustrated in Figure 6, the air-permeable element 31 is made of a double raschel knit fabric. That is, the air-permeable element 31 is configured in a three-layer structure comprising an inner layer 31a, an outer layer 31b, and a ventilation layer 31c. The inner layer 31a has an inner surface (a fabric side surface) that is bonded to the front fabric 12, in which the ventilation hole 35 is formed, and the outer layer 31b has an outer surface (an opposite side surface) 31e of the air-permeable element 31. An adhesive layer 37 is present between the inner layer 31a and the front fabric 12. However, the adhesive layer 37 does not close the ventilation hole 35 but is formed around it.This means that after the adhesive layer 37 is attached to the front fabric 12, a process is carried out to form the ventilation hole 35 in the front fabric 12 from the side of the adhesive layer 37, so that a hole is also formed in the adhesive layer 37, and the adhesive layer 37 may be designed in such a way that it does not close the ventilation hole 35. It should be noted that the inner layer 31a is bonded to the back fabric 14 when the ventilation hole 35 is formed in the back fabric 14.

[0030] Both the inner layer 31a and the outer layer 31b can, for example, be made of a blended fabric (woven material) of nylon and polyurethane or of a polyester fabric (woven material). Furthermore, the inner layer 31a and the outer layer 31b can be made of different materials. In any case, both the inner layer 31a and the outer layer 31b are air-permeable.

[0031] The ventilation layer 31c is located between the inner layer 31a and the outer layer 31b and lies on an outer circumferential surface (an outer circumferential side surface in Fig. 5A) 31d of the air-permeable element 31 is free. The ventilation layer 31c is made of a mesh fabric. Therefore, the ventilation layer 31c has a higher air permeability than the inner layer 31a and the outer layer 31b. That is, the inner layer 31a and the outer layer 31b have a lower air permeability than the ventilation layer 31c. Since the inner layer 31a is bonded to the front fabric 12 via the adhesive layer 37, while the ventilation layer 31c is coupled to the inner layer 31a, it is possible to ensure adhesion of the inner layer 31a to the front fabric 12, while ensuring air permeability of the air-permeable element 31 through the ventilation layer 31c.Therefore, compared to the case where the air-permeable element 31 itself is made of a non-woven fabric, not only can the adhesion of the air-permeable element 31 be improved, but the adhesion of the air-permeable element 31 to the front fabric 12 can also be maintained, even when used over a long period of time.

[0032] The knitted fabric is integrated into the inner layer 31a and the outer layer 31b. Therefore, the inner layer 31a cannot be easily separated from the ventilation layer 31c, and vice versa. It should be noted that the ventilation layer 31c may be bonded to the inner layer 31a or to the outer layer 31b. That is, the ventilation layer 31c is bonded to both the inner layer 31a and the outer layer 31b.

[0033] It should be noted that the air-permeable element 31 is not limited to an element made of a double-rasp knit fabric. For example, the ventilation layer 31c can be made of foam instead of knit fabric. That is, the air-permeable element 31 can have a three-layer structure consisting of the inner layer 31a, the foam-made ventilation layer 31c, and the outer layer 31b. In this case, the foam is bonded to the inner layer 31a and the outer layer 31b.

[0034] Furthermore, the ventilation layer 31c can be made of a woven fabric or a nonwoven fabric instead of a knitted fabric. If the ventilation layer 31c is made of a woven fabric, the woven fabric is preferably rougher than the inner layer 31a and the outer layer 31b. In this case, the woven fabric and the nonwoven fabric can be bonded to the inner layer 31a and the outer layer 31b.

[0035] Furthermore, the air-permeable element 31 can be made of a non-woven fabric, a woven fabric, a knitted fabric or a foam.

[0036] The sealing element 32 has the same size as the air-permeable element 31 and is attached to the outer surface 31e of the air-permeable element 31, that is, a surface of the air-permeable element 31 facing the opposite side of the front fabric 12 in which the ventilation hole 35 is formed. Therefore, the entire outer surface 31e of the air-permeable element 31 is covered by the sealing element 32. This means that ventilation in a section of the air-permeable element 31 facing the ventilation hole 35 is prevented by the sealing element 32. In contrast, the outer circumferential surface 31d (side surface in Fig. 6) of the air-permeable element 31 is not covered by the sealing element 32. Therefore, ventilation is allowed on the outer circumferential surface 31d of the air-permeable element 31. That is, since the air-permeable element 31 is exposed in a direction that overlaps with a direction of the ventilation hole 35, ventilation is allowed in that direction. Therefore, as in Fig. Figure 5B illustrates the direction of an airflow 38 passing through the ventilation hole 35, bent by the sealing element 32. Since the entire outer circumferential surface 31d is exposed, the air-permeable element 31 can be ventilated in its entire circumferential direction. It should be noted that, as in Fig. Figure 5C illustrates that the air-permeable element 31 and the sealing element 32 can be formed in a circular shape in a top view. However, the shape is not limited to a circular shape.

[0037] The sealing element 32 can be made from a seam tape for sealing a needle hole and making it watertight, and is an element with a resin film and an adhesive layer. The resin film is made from a resin such as polyurethane, nylon, or polyester. The adhesive layer comprises a thermoplastic adhesive (hot melt adhesive), a solvent-based adhesive, a moisture-curing adhesive, a UV-curing adhesive, or an acrylic adhesive (non-crosslinked adhesive). It should be noted that the sealing element 32 can be made from a cured adhesive.

[0038] In an example from Fig. 1. The fan 30 is provided on the front fabric 12. That is, as in Fig. As illustrated in Figure 7, the fan 30 is provided on a front fabric 41, which forms the front fabric 12, when the front fabric 12 and the back fabric 14 of the cold protection material 10 each form a layer. Furthermore, as shown in Fig. 8A, Fig. 8B, Fig. 9A and Fig. Figure 9B illustrates that when the front fabric 41 and a front inner fabric 42 are present within the front fabric 41 on the front of the filler 18, the fan 30 is provided on the front fabric 41 or the front inner fabric 42. That is, the front fabric 41 or the front inner fabric 42 functions as the front fabric 12. It should be noted that Fig. 8A and Fig. 8B illustrates a case where the back side of filler 18 is a layer, and Fig. 9A and Fig. 9B illustrates a case where the back side has two layers. As in Fig. 8A and Fig. Figure 9A illustrates that when the fan 30 is provided on the front inner fabric 42, which functions as the front fabric 12, the front fabric 41 is not restricted, so its design is superior. However, even when the fan 30 is provided on the front fabric 41, as shown in Fig. 7, Fig. 8B and Fig. Figure 9B illustrates that air permeability is ensured. It should be noted that in the case of Fig. 8B and Fig. 9B The front inner fabric 42 is made of a fabric with air permeability, and the front fabric 41, which functions as the front fabric 12, is made of a fabric with no or almost no air permeability. In each case, the fan 30 is arranged in the space 20.

[0039] As in Fig. As illustrated in Figures 10 to 12B, the fan 30 can be provided on the backing fabric 14. That is, as shown in Fig. Figure 10 illustrates that when the front fabric 12 and the back fabric 14 each form a layer, the fan 30 is provided on a back fabric 45 that forms the back fabric 14. Furthermore, as shown in Fig. 11A, Fig. 11B, Fig. 12A and Fig. Figure 12B illustrates that when the back fabric 45 and a back lining 46 are present within the back fabric 45 on the back of the filler 18, the fan 30 is provided on the back fabric 45 or the back lining 46. That is, the back fabric 45 or the back lining 46 functions as the back fabric 14. It should be noted that Fig. 11A and Fig. 11B illustrates a case where the front side of the filler 18 is a layer, and Fig. 12A and Fig. Figure 12B illustrates a case where the front is two layers. Even if the fan 30 is provided on the back fabric 14, air permeability is ensured. Furthermore, in a configuration consisting of Fig. 10 the interior of the space 20 is slightly warmed, as warm air from the interior of the cold-resistant garment flows into the space 20. Furthermore, in a configuration of Fig. 11A and Fig. 12A The back lining fabric 46, which functions as back lining fabric 14, is made of a fabric with no or almost no air permeability. If a fabric with a high ventilation rate is used for the back lining fabric 45, the interior of the cavity 20 will be slightly warmed, as warm air from the interior of the cold-resistant garment flows into the cavity 20. It should be noted that in the case of Fig. 11B and Fig. 12B The back lining fabric 46 is made of a fabric with air permeability, and the back fabric 45, which functions as the backing fabric 14, is made of a fabric with no or almost no air permeability. In each case, the fan 30 is arranged in the space 20.

[0040] As previously described, according to the present embodiment, the space 20, which is divided by the two partition elements 16 between the front fabric 12 and the back fabric 14, is ventilated to and from the outside of the space 20 through the ventilation hole 35 and the air-permeable element 31. Therefore, air 38 can escape from the ventilation hole 35 to the outside through the air-permeable element 31. At this point, ventilation occurs in the air-permeable element 31 through a section other than the section to which the sealing element 32 is attached. Conversely, outside air can enter the ventilation hole 35 through the air-permeable element 31 from a section other than the sealing element 32.This means that, since ventilation is provided by the fan 30, hardly any pressure is applied to a seam provided in the cold protection material 10, and consequently it is also possible to prevent the filler 18 from escaping from the seam.

[0041] The sealing element 32 is attached to the air-permeable element 31 in such a way that ventilation is prevented at least in one section facing the ventilation hole 35. Therefore, as in Fig. Figure 5B illustrates that the air 38 flowing out of the ventilation hole 35 does not exit the ventilation hole 35 directly, but changes its direction of flow through the sealing element 32 and then exits to the outside. Therefore, the filler 18 cannot escape from the air-permeable element 31, even if the filler 18 attempts to penetrate the ventilation hole 35 and the air-permeable element 31 within the space 20, because the filler 18 encounters the sealing element 32. While ventilation between the inside and outside of the space 20 can be allowed, it is therefore possible to prevent the filler 18, made of down or feathers, from escaping to the outside.

[0042] Furthermore, since the sealing element 32 has the resin film, it is possible to prevent ventilation at the position opposite the ventilation hole 35, while reducing the protrusion of the front fabric 12 or the back fabric 14 which is provided with the ventilation hole 35.

[0043] Furthermore, since the air-permeable element 31 has a three-layer structure comprising the inner layer 31a, the ventilation layer 31c, and the outer layer 31b, the inner layer 31a, which allows ventilation between the ventilation hole 35 and the ventilation layer 31c, ensures the adhesion of the air-permeable element 31 to the front fabric 12 (or the back fabric 14). Furthermore, since the ventilation layer 31c is exposed on the outer circumferential surface 31d of the air-permeable element 31, ventilation occurs on the outer circumferential surface 31d.

[0044] Since the air-permeable element 31 is bonded to the front fabric 12 or the back fabric 14 around the ventilation hole 35, ventilation of the ventilation hole 35 is ensured even when the adhesive layer 37 is provided between the air-permeable element 31 and the front fabric 12 or the back fabric 14, which is provided with the ventilation hole 35.

[0045] Furthermore, the air-permeable element 31 and the sealing element 32 do not protrude from the front fabric 12 or the back fabric 14, since the fan 30 is located in the space 20.

[0046] It should be noted that in the present embodiment, the sealing element 32 covers the entire outer surface 31e (the surface facing the side opposite the front material 12 in which the ventilation hole 35 is formed) of the air-permeable element 31, but the present invention is not limited to this. For example, the sealing element 32 may cover only a portion of the outer surface 31e of the air-permeable element 31. However, as shown in Fig. Figure 13 illustrates that the sealing element 32 can be arranged to have a section facing the ventilation hole 35 (a section of the same size as the ventilation hole 35). In this configuration, the air permeability can be improved compared to a configuration where the entire outer surface 31e is covered. Furthermore, the filler 18 hardly protrudes from the air-permeable element 31 because the direction of airflow 38, which attempts to escape from the ventilation hole 35, is deflected by the sealing element 32.

[0047] Furthermore, as in Fig. Figure 14 illustrates that the sealing element 32 is configured to have an outer circumferential section 32a that covers the outer circumferential surface 31d of the air-permeable element 31, and an outer surface section 32b that covers only a portion of the outer surface 31e of the air-permeable element 31. In this case, the outer surface section 32b is arranged to have the section facing the vent hole 35 (the section of the same size as the vent hole 35).

[0048] In the present embodiment, the dividing element 16 is furthermore made from an element having a cross-section that is not bent; however, the present embodiment is not limited to this. For example, as in Fig. 15 and Fig. Figure 16 illustrates that the subdivision element 16 has a subdivision wall section 16d, a front section 16e extending from an end section of the subdivision wall section 16d in such a way that it is bent from the subdivision wall section 16d and is bonded to the front fabric 12, and a back section 16f extending from the other end of the subdivision wall section 16d in such a way that it is bent from the subdivision wall section 16d and is bonded to the back fabric 14. Fig. Figure 15 illustrates a shape in which the front section 16e and the back section 16f are bent in the same direction, and Fig. Figure 16 illustrates a shape in which the front section and the back section are bent in opposite directions. (Second embodiment)

[0049] Fig. Figure 17 illustrates a second embodiment of the present invention. In this embodiment, the same components as in the first embodiment are identified by the same reference numerals, and their detailed description is omitted.

[0050] In the first embodiment, the fan 30 is provided with the air-permeable element 31 and the sealing element 32. In the second embodiment, however, the sealing element 32 is not provided, and an air-permeable element 50 itself prevents the filler 18 from escaping.

[0051] The air-permeable element 50 is arranged to cover the ventilation hole 35 provided in the front fabric 12. The adhesive layer 37 is present between the air-permeable element 50 and the front fabric 12. However, the adhesive layer 37 does not cover the ventilation hole 35 but forms around it. It should be noted that the air-permeable element 50 is bonded to the back fabric 14 when the ventilation hole 35 is formed in the back fabric 14. The air-permeable element 50 can, as shown in Fig. Figures 7 to 12B illustrate that they should be arranged in a position where fan 30 is located.

[0052] The air-permeable element 50 is made of a non-woven fabric or a foam with a thickness of 1 mm or more. Therefore, since the air-permeable element 50 is air-permeable but does not have high air permeability, the filler 18 hardly penetrates the air-permeable element 50. The sealing element 32 is not provided on an outer surface 50e and an outer circumferential surface 50d of the air-permeable element 50, and the outer surface 50e and the outer circumferential surface 50d are exposed; however, it is possible to prevent the filler 18, made of down or feathers, from escaping. It should be noted that the thickness of the air-permeable element 50 can be 3 mm or less.

[0053] In the first embodiment, it is possible to prevent the filler 18 from escaping, even if the thickness of the air-permeable element 31 is less than 1 mm, because the sealing element 32 is provided.

[0054] Although descriptions of other configurations, processes and effects are omitted, the description of the first embodiment can apply to the second embodiment. (Overview of the embodiments)

[0055] The embodiment is briefly described here.

[0056] (1) The cold protection material according to the embodiment is a cold protection material used for a cold-resistant garment, comprising: a front fabric forming a front fabric of the cold-resistant garment or forming a fabric arranged within the front fabric; a back fabric arranged on a reverse side of the front fabric; two dividing elements forming a space between the front fabric and the back fabric; a filling material made of down or feathers contained in the space; an air-permeable element arranged to cover a ventilation hole provided in the front fabric or the back fabric; and a sealing element attached to the air-permeable element in such a way as to prevent ventilation at least in a section of the air-permeable element facing the ventilation hole.The air-permeable element allows ventilation on a section other than the section to which the sealing element is attached.

[0057] In the cold insulation material, a cavity divided by two partitions between the front and back fabrics is ventilated to and from the outside of the cavity through the ventilation hole and the air-permeable element. Air can therefore escape from the ventilation hole through the air-permeable element to the outside. At this point, ventilation occurs through the section of the air-permeable element other than the section to which the sealing element is attached. Conversely, outside air can enter the ventilation hole through the air-permeable element from the section other than the sealing element. This means that, since ventilation occurs through the air-permeable element, minimal pressure is exerted on the seam provided in the cold insulation material, thus preventing the filler from escaping the seam.

[0058] The sealing element is attached to the air-permeable element in such a way that ventilation is prevented, at least in the section facing the ventilation hole. Therefore, the air flowing from the ventilation hole does not exit directly through it, but changes direction due to the sealing element and then exits to the outside. Consequently, the filling cannot escape from the air-permeable element, even if it attempts to penetrate the ventilation hole and the air-permeable element within the space, as it encounters the sealing element. While ventilation between the inside and outside of the space between the front and back fabrics is thus permitted, it is possible to prevent the down or feather filling from escaping.

[0059] (2) The air-permeable element may be made of a non-woven fabric, a woven fabric, a knitted fabric, a double raschel knit fabric, or a foam. In this respect, it is possible to ensure the air permeability of the air-permeable element while preventing its weight from increasing excessively.

[0060] (3) The sealing element may have a resin film. Since the sealing element has a thin film, it is possible in this respect to prevent ventilation at the position opposite the ventilation hole, while reducing protrusion of the front fabric or the back fabric which has the ventilation hole.

[0061] (4) The air-permeable element may comprise: a ventilation layer; an inner layer located on one side of the ventilation layer, wherein the inner layer is bonded to the front fabric or the back fabric which has the ventilation hole and wherein the inner layer has a lower air permeability than the ventilation layer; and an outer layer located on the other side of the ventilation layer and having a lower air permeability than the ventilation layer. In this case, ventilation between the ventilation hole and the ventilation layer is provided by the inner layer.

[0062] In this respect, the inner layer, which allows ventilation between the ventilation hole and the ventilation layer, ensures the adhesion of the air-permeable element to the front or back fabric containing the ventilation hole. It should be noted that, in this respect, ventilation occurs on the outer perimeter surface when the ventilation layer is exposed on the outer perimeter surface of the air-permeable element.

[0063] (5) The air-permeable element may be bonded to the front or back fabric around the ventilation hole. In this respect, ventilation of the ventilation hole is ensured even if the adhesive layer is provided between the air-permeable element and the front or back fabric which contains the ventilation hole.

[0064] (6) The air-permeable element and the sealing element may be arranged in the space between. In this respect, the air-permeable element and the sealing element do not protrude from the front or back fabric.

[0065] (7) The cold-protection material according to the second embodiment is a cold-protection material used for a cold-resistant garment, comprising: a front fabric forming a front fabric of the cold-resistant garment or forming a fabric arranged within the front fabric; a back fabric arranged on the reverse side of the front fabric; two dividing elements forming a space between the front fabric and the back fabric; a filling material made of down or feathers contained in the space; and an air-permeable element made of an air-permeable material and arranged to cover a ventilation hole provided in the front fabric or the back fabric. The air-permeable element is made of a non-woven fabric or a foam with a thickness of 1 mm or more.

[0066] In the cold insulation material, a cavity divided by two partitions between the front and back fabrics is ventilated to and from the outside of the cavity through the ventilation hole and the air-permeable element. Air can therefore escape from the ventilation hole through the air-permeable element to the outside, while outside air can enter the ventilation hole through the air-permeable element. Because ventilation occurs through the air-permeable element, very little pressure is exerted on the seam in the cold insulation material, thus preventing the filler from coming loose. Since the air-permeable element is made of a non-woven fabric or foam with a thickness of 1 mm or more, the ventilation rate is low, preventing the filler from coming loose.Therefore, it is possible to prevent the down or feather filling from escaping to the outside, while allowing air to enter and exit the space between the front and back fabrics.

Claims

[1] Cold protection material (10) used for a cold-resistant garment comprising: a front fabric (12) that forms a front fabric of the cold-resistant garment or forms a fabric arranged within the front fabric; a backing fabric (14) arranged on a back side of the fronting fabric (12); two dividing elements (16) that form a space (20) between the front fabric (12) and the back fabric (14); a filling material (18) made from down or feathers taken up in the space (20); an air-permeable element (31) arranged to cover a ventilation hole (35) provided in the front fabric (12) or the back fabric (14); and a sealing element (32) which is attached to the air-permeable element (31) in such a way that ventilation is prevented at least in a section of the air-permeable element (31) facing the ventilation hole (35), wherein the air-permeable element (31) allows ventilation at a section other than a section to which the sealing element (32) is attached. [2] Cold protection material (10) according to claim 1, wherein the air-permeable element (31) comprises a nonwoven fabric, a woven fabric, a knitted fabric, a double raschel knit fabric or a foam. [3] Cold protection material (10) according to claim 1 or 2, wherein the sealing element (32) has a resin film. [4] Cold protection material (10) according to one of claims 1 to 3, wherein the air-permeable element (31) comprises: a ventilation layer (31c); an inner layer (31a) located on one side of the ventilation layer (31c), wherein the inner layer (31a) is bonded to the front fabric (12) or the back fabric (14) which is provided with the ventilation hole (35) and wherein the inner layer (31a) has a lower air permeability than the ventilation layer (31c); and an outer layer (31b) located on the other side of the ventilation layer (31c) and having a lower air permeability than the ventilation layer (31c), and Ventilation between the ventilation hole (35) and the ventilation layer (31c) is provided by the inner layer (31a). [5] Cold protection material (10) according to one of claims 1 to 4, wherein the air-permeable element (31) is bonded to the front fabric (12) or the back fabric (14) around the ventilation hole (35). [6] Cold protection material (10) according to one of claims 1 to 5, wherein the air-permeable element (31) and the sealing element (32) are arranged in the space (20). [7] Cold protection material (10) used for a cold-resistant garment comprising: a front fabric (12) that forms a front fabric of the cold-resistant garment or forms a fabric arranged within the front fabric; a backing fabric (14) arranged on a back side of the fronting fabric (12); two dividing elements (16) that form a space (20) between the front fabric (12) and the back fabric (14); a filling material (18) made from down or feathers contained in the space (20); and an air-permeable element (50) made of an air-permeable material and arranged to cover a ventilation hole (35) provided in the front fabric (12) or the back fabric (14), wherein the air-permeable element (50) is made of a non-woven fabric or a foam with a thickness of 1 mm or more.

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