JP2012183228A - Cooling sheet, method of manufacturing the same, and cooling clothing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling sheet which has a high cooling effect with a simple structure and is suitable for use under a comparatively dry environment at especially high external temperature.SOLUTION: The cooling sheet 10 includes: a first sheet-like member 11 with air permeability; a second sheet-like member 12 with water absorbability, which is arranged to face the first sheet-like member; water absorbing agents 13 arranged at multiple places at intervals between the first sheet-like member 11 and the second sheet-like member 12; and multiple cells 14 for storing the water absorbing agents 13, which are formed by joining the first sheet-like member 11 and the second sheet-like member 12 so as to surround the water absorbing agents 13 arranged, in respective places, at the places. Agents with characteristics to easily absorb water and also to easily evaporate the absorbed water are used as the water absorbing agents 13. The cooling sheet 10 is allowed to tightly adhere to a body, and thereby cooling the body by using vaporization heat to be taken from the circumference when the water absorbed in the water absorbing agents 13 evaporates.

Description

  The present invention relates to a cooling sheet for cooling various objects to be cooled, such as a human torso, a method for manufacturing the cooling sheet, and a cooling garment to which the cooling sheet is applied.

  Humans are naturally equipped with a temperature control function, and when it is hot, the necessary amount of sweat comes out of the sweat glands to cool the body in response to a command from the brain temperature control center. If sweat evaporates immediately, the body surface temperature is kept at the temperature that the brain commands, and it is comfortable. This is called a physiological cooler theory, and details thereof are disclosed in, for example, pamphlet of International Publication No. 2005/063065. Based on this physiological cooler theory, the present inventor is an air-conditioning suit that allows a large amount of wind to be blown substantially parallel to the body to evaporate sweat and comfortably spend even when the outside air temperature is somewhat hot due to the heat of vaporization during evaporation Has been invented and commercialized.

International Publication No. 2005/063065 Pamphlet

  However, there is a limit to the environment in which the above air-conditioning clothing is used. Sufficient cooling when using air-conditioning clothing in high-temperature dry environments, such as low-humidity but very high-temperature workplaces, such as aluminum melting sites where temperatures reach as high as 50 degrees The effect was not obtained.

  On the other hand, at aluminum melting work sites, etc., measures such as cooling a cold pack with a built-in cold insulation agent in the refrigerator and sticking it to the body were taken, but since the cold insulation agent uses sensible heat, In the initial stage when it was in close contact with the battery, it was too cold, and as time went on, the temperature increased and it became ineffective in a short time, so the cold pack had to be replaced frequently. In addition, in order to cool the entire human torso, a large amount of cold packs are required, and in order to maintain the cooling effect for a long time, a large amount of cold insulating agent is required, which is very heavy and not practical.

  In addition, a product that puts a water-absorbing polymer in a cloth bag, absorbs water in this water-absorbing polymer, adheres it to the body, and cools the body using the heat of vaporization when water evaporates is also a product It has become. This product uses vaporization heat, so it can be used for a long time, but since only a water-absorbing polymer is put in a cloth bag, a small area can be made, but for example, let's cool the whole human torso As a result, a very large number was required, which was not practical.

  The present invention has been made based on the above circumstances, and has a simple structure and a high cooling effect, and is particularly suitable for use in an environment where the outside air temperature is high and is relatively dry, and the manufacture of the cooling sheet is provided. The object is to provide a method and a cooling garment to which the cooling sheet is applied.

  The cooling sheet according to the present invention for achieving the above object includes a first sheet-shaped member, a second sheet-shaped member disposed to face the first sheet-shaped member, a first sheet-shaped member, and a second sheet. The first sheet-like member and the second sheet-like member are joined so as to surround the water-absorbing agent arranged at a plurality of locations with a space between the sheet-like members and the water-absorbing agent arranged at the respective locations at each location. And a plurality of storage portions for storing the water-absorbing agent disposed at each location. Here, it is desirable that the water-absorbing agent has a characteristic of absorbing water and evaporating the absorbed water.

  Such a cooling sheet is used to cool a desired object. In order to cool the object using this cooling sheet, the water absorbing agent is allowed to absorb water, and then the cooling sheet is brought into close contact with the object. The object is cooled using heat transfer due to a temperature difference between the cooling sheet and the object. The object is also cooled by taking heat of vaporization from the surroundings when the water absorbed by the water absorbing agent evaporates.

  As described above, the cooling sheet according to the present invention includes the water absorbing agent disposed at a plurality of locations at intervals between the first sheet-shaped member and the second sheet-shaped member disposed to face each other. A plurality of storage portions for storing the water-absorbing agent disposed at each location, formed by joining the first sheet-shaped member and the second sheet-shaped member so as to surround the water-absorbing agent disposed at the location. I have. As a result, the water absorbing agent can be arranged on the cooling sheet at a substantially constant interval, and even if a cooling sheet having a large area is produced, the cooling sheet can have flexibility. For this reason, when a planar cooling sheet in which such water-absorbing agents are arranged at substantially constant intervals is used, it is possible to cool a portion having a large area, such as a human torso. In addition, since the water absorbing agent stored in each storage unit cannot be moved from the position of the storage unit by storing the water absorbing agent in each storage unit, a large area cooling sheet is wound around, for example, a human torso. Even if used, the water-absorbing agent containing water is not biased downward as a whole. Further, when the cooling sheet according to the present invention is used in an environment where the outside air temperature is high and relatively dry, the water absorbed by the water absorbing agent evaporates actively and takes away from the surroundings when the water evaporates. Since the temperature rise of the water-absorbing agent can be effectively suppressed by the heat of vaporization, the rate of temperature rise of the water-absorbing agent can be moderated, and thus the cooling effect lasts for a long time.

  In the cooling sheet according to the present invention, it is desirable that one of the first sheet-like member and the second sheet-like member is a member having water absorption, and the other is a member having air permeability. Thus, when water is absorbed by the water-absorbing agent, if the cooling sheet is floated on a container containing water so that the water-absorbing sheet-like member is in contact with water, the water in the container is removed from the sheet-like member. Since the water absorbing agent can absorb water and the air in the storage portion can be released to the outside through the air-permeable sheet-like member, the water absorbing operation to the water absorbing agent can be easily performed. .

  Furthermore, in the cooling sheet according to the present invention, a material having low water wettability is used as the material of one of the first sheet-like member and the second sheet-like member, and the material of the other sheet-like member is wetted. It is desirable to use a material with high properties. As a result, when the water absorbing agent absorbs water, if a cooling sheet is floated on a container containing water so that the sheet-like member using a material with high water wettability is in contact with water, the sheet on the side not in contact with water Since the shape member is difficult to get wet with water, it is possible to effectively prevent air from remaining in the storage portion.

  In particular, as a material for one sheet-like member of the first sheet-like member and the second sheet-like member, a material having high water wettability having water absorbency is used, and the other sheet-like member has air permeability. It is preferable to use a material having low water wettability. Thereby, when water is absorbed by the water-absorbing agent, when a cooling sheet is floated on a container containing water so that the sheet-like member using a material with high water wettability is in contact with water, the water in the container is Since the water absorbent can quickly absorb water through a sheet-like member using a water-absorbing material having high water absorption, the sheet-like member on the side that does not come into contact with water is not easily wetted and has air permeability. The air in the storage portion can be easily released to the outside through the sheet-like member, and the air can be more effectively prevented from staying in the storage portion. Therefore, the water absorption operation to the water absorbing agent can be performed easily and in a short time.

  Moreover, in the cooling sheet | seat which concerns on this invention, it is desirable to use a water absorbing polymer as a water absorbing agent. Since such a water-absorbing polymer has high water absorption, it is suitable for use as a water-absorbing agent for the present cooling sheet.

  Further, in the cooling sheet according to the present invention, the first sheet-shaped member and the second sheet are sewn by stitching a portion surrounding the water-absorbing agent with respect to the first sheet-shaped member and the second sheet-shaped member arranged to face each other. It is desirable to join the members. Thereby, a water absorbing agent can be reliably arranged in each storage part, and movement to other storage parts can be prevented completely.

  Furthermore, in the cooling sheet according to the present invention, it is desirable to use cloth as a material for the first sheet-like member and the second sheet-like member. Thereby, sufficient durability can be given to the cooling sheet.

  In order to achieve the above object, a cooling sheet manufacturing method according to the present invention provides a water absorbing agent at a plurality of locations at intervals between a first sheet-like member and a second sheet-like member arranged to face each other. The first sheet after the placing step, the temporary joining step of temporarily joining the first sheet-like member and the second sheet-like member so as to surround the water absorbing agent placed at the location at each location, and the temporary joining step And a main joining step of main joining the temporarily joined portions of the sheet-like member and the second sheet-like member.

  Thus, in this invention, after temporarily joining the 1st sheet-like member and the 2nd sheet-like member so that the water absorbing agent arrange | positioned in the said location in each location may be enclosed, a 1st sheet-like member and a 2nd sheet shape By temporarily joining the part of the member that has been temporarily joined, the water-absorbing agent placed at each location spills from the placed location or moves to another location after the temporary joining until the final joining is completed. The occurrence rate of defective products can be greatly suppressed.

  Moreover, in the manufacturing method of the cooling sheet | seat which concerns on this invention, it is desirable to perform temporary joining of a 1st sheet-like member and a 2nd sheet-like member using an adhesive agent. In this case, for example, by using a transfer tool having a protrusion for attaching the adhesive, the protrusion attached with the adhesive is pressed against one sheet-like member, whereby the adhesive is applied to the sheet. Since it can be easily transferred to the member, the temporary joining operation can be performed in a short time.

  Furthermore, in the method for manufacturing a cooling sheet according to the present invention, in the temporary joining step, either one of the first sheet-like member and the second sheet-like member is spaced along a certain direction. The adhesive is then transferred in a straight line, and then the adhesive is transferred in a straight line at intervals along a direction substantially perpendicular to the spaced direction, after which the adhesive is transferred. It is desirable that the first sheet-like member and the second sheet-like member are temporarily joined by overlapping the sheet-like member and the other sheet-like member. When the adhesive is transferred to the sheet-like member using a transfer tool having a structure having a protrusion for attaching the adhesive, the protrusion is formed in a lattice shape so that the above-mentioned is applied to the sheet-like member. The adhesive can be transferred simultaneously at intervals along both directions, but when the adhesive is attached to the protrusion, the adhesive with a particularly low viscosity is the intersection of the protrusions of the transfer tool due to capillary action. Therefore, if the adhesive is transferred to the sheet-like member using the transfer tool while the adhesive is still attached, the adhesive spreads in the portion corresponding to the intersection on the sheet-like member. . On the other hand, in the present invention, the transfer of the adhesive is performed by dividing the transfer into a transfer along a certain direction and a transfer along the direction substantially perpendicular to the direction. It is possible to prevent the adhesive from partially spreading on the sheet-like member.

The cooling garment according to the present invention for achieving the above object is
The first sheet-shaped member, the second sheet-shaped member disposed to face the first sheet-shaped member, and the first sheet-shaped member and the second sheet-shaped member are disposed at a plurality of positions with a space therebetween. The water absorbing agent arranged at each location is formed by joining the first sheet-like member and the second sheet-like member so as to surround the water absorbing agent arranged at the location at each location. One or a plurality of cooling sheets having a plurality of storage units
A clothes-like body that is formed using a mesh-like material or a waterproof sheet-like material, and can cover a predetermined part of the body;
With
The water absorbing agent of each cooling sheet absorbs water, and the cooling sheet is attached to the surface of the clothing body opposite to the surface in contact with the body.

  As described above, in the cooling garment according to the present invention, each cooling sheet has a water absorbing agent disposed at a plurality of locations at intervals between the first sheet member and the second sheet member disposed to face each other. And formed by joining the first sheet-like member and the second sheet-like member so as to surround the water-absorbing agent arranged at the location at each location, a plurality of water-absorbing agents arranged at each location are stored. Since the water absorbing agent is arranged on the cooling sheet at substantially constant intervals, the cooling sheet has flexibility even when a large area cooling sheet is produced. For this reason, by attaching a flat cooling sheet in which such water-absorbing agents are arranged at almost constant intervals to the clothing, it is possible to produce a cooling clothing with high flexibility and to absorb water when the cooling clothing is worn. The arrangement of the agent is not biased downward. Further, when the cooling garment of the present invention is used in an environment where the outside air temperature is relatively high and relatively dry, the water absorbed by the water-absorbing agent is actively evaporated and the heat of vaporization taken away from the surroundings when the water evaporates. Can be used to cool the body sufficiently. In addition, the temperature rise of the water-absorbing agent can be effectively suppressed by the heat of vaporization taken away from the surroundings when the water evaporates, so that the rate of temperature rise of the water-absorbing agent can be moderated to maintain the cooling effect for a long time. Can do.

  Moreover, it is desirable that the cooling garment according to the present invention includes a pressing unit that presses each cooling sheet that is manufactured using a mesh-like material and attached to the garment. In this case, an air layer is prevented from being generated in the storage unit when the water absorbed in the water-absorbing agent in each storage unit evaporates due to the force of the pressing means pressing the cooling sheet and the volume of the water-absorbing agent decreases. Therefore, a constant cooling effect can be maintained from the time when the water absorbing agent absorbs water until the water absorbed by the water absorbing agent disappears. In addition, since the pressing means is produced using a mesh-like material, the pressing means itself does not hinder evaporation of water absorbed by the water absorbing agent.

  Furthermore, the cooling garment according to the present invention includes a cloth part covering a predetermined part of the body, and one or a plurality of air blowing means for forcibly generating an air flow in the space between the cloth part and the body. Air-conditioning clothing is further provided, and air-conditioning clothing is worn on the clothing body to which the cooling sheet is attached, and the air is circulated inside the air-conditioning clothing by driving the air blowing means. It is desirable to promote evaporation of water absorbed by the water absorbent of the attached cooling sheet. As described above, by utilizing the function of the air-conditioning garment that generates the air flow substantially parallel to the body surface, it is possible to promote the evaporation of the water absorbed by the water-absorbing agent, thereby further improving the cooling effect. Can be increased.

  According to the cooling sheet according to the present invention, even if a cooling sheet having a large area is produced, the cooling sheet can be made flexible. For example, it is possible to cool a portion having a large area such as a human torso. Is possible. Also, when this cooling sheet is used in an environment where the outside air temperature is relatively high and relatively dry, the water absorbed by the water absorbing agent evaporates actively, and the heat of vaporization that takes away from the surroundings when the water evaporates. Since the temperature increase of the water-absorbing agent can be effectively suppressed, the temperature increase rate of the water-absorbing agent can be moderated, and the cooling effect lasts for a long time. Therefore, the cooling sheet according to the present invention has a simple structure, but has a sufficient cooling capacity in a relatively low humidity environment even when the outside air temperature is high. It is possible to use for the purpose.

FIG. 1A is a schematic plan view of a cooling sheet according to the first embodiment of the present invention, FIG. 1B is a schematic cross-sectional view in the direction of arrows AA of the cooling sheet, and FIG. It is an AA arrow direction schematic sectional drawing when making the water absorbing agent of a sheet | seat absorb water. FIG. 2A is a schematic cross-sectional view of the cooling sheet for explaining the average thickness of the cooling sheet, and FIG. 2B is a schematic cross-sectional view of the cooling sheet when a part of the water absorbed by the water-absorbing agent evaporates. FIG. 2C is a schematic cross-sectional view of the cooling sheet when the water absorbed by the water absorbing agent has completely evaporated. FIG. 3A is a schematic front view of a glue transfer tool used in the adhesive transfer step, and FIG. 3B is a schematic side view of the glue transfer tool. FIG. 4A is a diagram for explaining a second sheet-like member to which glue is transferred at intervals along the horizontal direction, and FIG. 4B is a second sheet-like shape to which glue is transferred in a lattice shape. It is a figure for demonstrating a member. FIG. 5A is a schematic front view of a water-absorbing agent arranging tool used in the water-absorbing agent arranging step, FIG. 5B is a schematic rear view of the water-absorbing agent arranging tool, and FIG. It is a BB arrow direction schematic sectional drawing. FIG. 6A is a diagram for explaining a second sheet-like member in which a water-absorbing agent is arranged at the center of each lattice formed by the transferred glue, and FIG. 6B is the second sheet-like member. It is a CC sectional view schematic sectional drawing. Fig.7 (a) is a schematic front view of the pressing tool used at a temporary joining process, FIG.7 (b) is a schematic side view of the pressing tool. FIG. 8A is a schematic front view of a simplified cooling garment according to the second embodiment of the present invention, and FIG. 8B is a schematic view of the simplified cooling garment attached to a human torso as viewed from the front side. FIG. 8 and FIG. 8C are schematic views when the simplified cooling garment attached to the human torso is viewed from the back side. FIG. 9A is a schematic view of the third embodiment of the present invention as seen from the front side in the state of wearing the cooling clothes, and FIG. 9B shows the state of wearing out the cooling clothes as seen from the back side. FIG. FIG. 10 (a) is a schematic development view of a garment body in the cooling garment of the third embodiment, FIG. 10 (b) is a schematic development view of close contact mesh means in the cooling garment, and FIG. 10 (c) is in the cooling garment. FIG. 10D is a schematic plan view of the first cooling sheet, and FIG. 10D is a schematic plan view of the second cooling sheet in the cooling garment. FIG. 11A is a schematic view of the fourth embodiment of the present invention as seen from the front side when the cooling clothes are worn, and FIG. 11B is a view of the cooling clothes as seen from the back side. FIG. FIG. 12 is a view for explaining a modification of the cooling garment of the present invention.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

[First embodiment]
First, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1A is a schematic plan view of a cooling sheet according to the first embodiment of the present invention, FIG. 1B is a schematic cross-sectional view in the direction of arrows AA of the cooling sheet, and FIG. It is an AA arrow direction schematic sectional drawing when making the water absorbing agent of a sheet | seat absorb water. 2A is a schematic sectional view of the cooling sheet for explaining the average thickness of the cooling sheet, and FIG. 2B is an outline of the cooling sheet when a part of the water absorbed by the water absorbing agent evaporates. Sectional drawing and FIG.2 (c) are schematic sectional drawings of a cooling sheet | seat when the water absorbed by the water absorbing agent evaporated completely.

  As shown in FIGS. 1A and 1B, the cooling sheet 10 of the first embodiment includes a first sheet-like member 11, a second sheet-like member 12, a water absorbent 13, and a plurality of cells (housing). Part) 14. The first sheet-like member 11 and the second sheet-like member 12 have substantially the same shape and are arranged to face each other. A cloth is used as the material of the first sheet-like member 11 and the second sheet-like member 12. Further, the water absorbing agent 13 has a property of absorbing water. In the present embodiment, as the water absorbing agent 13, a water absorbing agent that has an evaporating property, that is, a material that easily absorbs water and easily evaporates the absorbed water is used. For example, a water-absorbing polymer can be used as the water-absorbing agent 13. Since such a water-absorbing polymer has high water absorption, it is suitable for use as the water-absorbing agent 13 of the cooling sheet 10. Specifically, as the water absorbing agent 13, the same water-absorbing polymer used for various types of cool scarves such as Magi-Cool (registered trademark) sold by Daisaku Shoji Co., Ltd. can be used.

  The water-absorbing agent 13 is disposed at a plurality of locations at intervals between the first sheet-like member 11 and the second sheet-like member 12. The water absorbent 13 is accommodated in each cell 14. These cells 14 are formed by joining the first sheet-like member 11 and the second sheet-like member 12 so as to surround the water-absorbing agent 13 disposed at the respective places. Here, the first sheet-like member 11 and the second sheet-like member 12 that are arranged to face each other are sewn with a thread around the water absorbent 13.

  Specifically, as shown in FIGS. 1A and 1B, the first sheet-like member 11 and the second sheet-like member 12 are stitched vertically and horizontally at intervals of 20 mm to form a large number of cells 14. Yes. An appropriate amount of water-absorbing agent 13 is confined in each cell 14. When the cells 14 are thus formed at a pitch of 20 mm, for example, about 50 milligrams of water absorbing agent is disposed in each cell 14. In FIGS. 1A and 1B, reference numeral “16” represents a seam (joint portion) sewn with a thread to form the cell 14.

  In order to cool a desired object using the cooling sheet 10 of the first embodiment, the water absorbing agent 13 absorbs water, and then the cooling sheet 10 is brought into close contact with the object. The object is cooled by using heat transfer due to the temperature difference between the cooling sheet 10 and the object, and is also cooled by using the heat of vaporization taken away from the surroundings when the water absorbed by the water absorbent 13 evaporates. Is done. Therefore, the cooling sheet 10 is particularly suitable for use in an environment where the outside air temperature is high and the air is relatively dry so that water absorbed by the water absorbent 13 is actively evaporated.

  The water absorption work to the water absorbing agent 13 is performed as follows. That is, by floating the cooling sheet 10 in a container containing water, the water absorbent 13 can easily absorb water through a sheet-like member in contact with water. After this water absorption operation, as shown in FIG. 1 (c), the volume of the water absorbing agent 13 increases, and the cooling sheet 10 becomes usable. When the cooling sheet 10 in such a state is used, the object is cooled. Here, when a part of the water absorbed by the water absorbent 13 evaporates during the cooling of the target object, the volume of the water absorbent 13 is slightly reduced as shown in FIG. When the water completely evaporates, as shown in FIG. 2C, the volume of the water-absorbing agent 13 is the smallest and returns to the dry state. Thereafter, the cooling sheet 10 becomes usable again by performing the water absorbing operation on the water absorbing agent 13 again.

  Incidentally, an air layer is formed in each cell 14 of the dried cooling sheet 10 after use as shown in FIG. If a material excellent in water absorption is used as the material of the first sheet-like member 11 and the second sheet-like member 12, when the cooling sheet 10 is floated in a container filled with water in order to perform water absorption work, Before the water absorbent 13 sufficiently absorbs water through the sheet-like member on the side in contact with water, the upper sheet-like member that is not in contact with water via the thread of the seam gets wet. Since the sheet-like member wetted with water has a very low air flowability, air in the air layer generated in the cells 14 stays there and prevents the water absorbing agent 13 from absorbing water. In order to solve this problem, a material having air permeability may be used as the first sheet-like member 11 and a material having water absorption may be used as the second sheet-like member 12. In this case, at the time of water absorption work, the cooling sheet 10 is floated on a container containing water so that the second sheet-like member 12 using a water-absorbing material contacts the water. As a result, the water in the container can be absorbed by the water absorbent 13 through the second sheet-like member 12, and the air in the cell 14 is externally introduced through the first sheet-like member 11 having air permeability. Therefore, it is possible to easily perform the water absorption work for the water absorbing agent. In particular, it is desirable to use a material with low water wettability as the material of the first sheet-like member 11 and to use a material with high water wettability as the material of the second sheet-like member 12. When the cooling sheet 10 is floated in a container containing water so that the second sheet-like member 12 comes into contact with water during the water absorption operation, the first sheet-like member 11 on the side that does not come into contact with water is not easily wetted with water. The air in the cell 14 can be easily pushed out of the upper first sheet-like member 11 by the pressure of the volume increase of the water-absorbing agent 13 due to water absorption, so that the air stays in the cell 14. This is because it can be effectively prevented.

  For the reasons described above, in the present embodiment, a material having air permeability and low water wettability is used as the material of the first sheet-like member 11, and water wettability having water absorbency is used as the material of the second sheet-like member 12. We will use high-quality materials. Thereby, when making the water absorbing agent 13 absorb water, if the cooling sheet | seat 10 is floated in the container which put water so that the 2nd sheet-like member 12 may contact water, the water in the container will be made into 2nd sheet form. The water absorbent 13 can quickly absorb water through the member 12, and the first sheet-like member 11 is not easily wetted by water and has air permeability. Therefore, the air in the cell 14 is passed through the first sheet-like member 11. Thus, it is possible to easily escape to the outside, and it is possible to more effectively prevent air from remaining in the cell 14. Therefore, the water absorption operation to the water absorbing agent 13 can be performed easily and in a short time.

  After the water absorbing operation to the water absorbent 13, each cell 14 swells as the volume of the water absorbent 13 increases as shown in FIG. The height of the bulge is mainly determined by the size of the cell 14, but in addition to this, the amount of the water-absorbing agent 13, the characteristics of the water-absorbing agent 13, the flexibility of the first sheet-like member 11 and the second sheet-like member 12, etc. Also depends. The total amount of water absorbed by the cooling sheet 10 is determined by the average thickness T and the total area of the cooling sheet 10 that has absorbed and swollen. Here, the average thickness T of the cooling sheet 10 is literally the average value of the thickness of the cooling sheet 10 as shown in FIG. The average thickness T of the cooling sheet 10 is independent of the entire area of the cooling sheet 10 and depends on the height of the bulge of the cell 14, and can therefore be determined mainly by the size of the cell 14. For example, when the cells 14 are formed in a square shape having a side length of 20 mm, the average thickness T of the cooling sheet 10 after the water absorbing agent 13 absorbs water is about 4 mm. Generally, the larger the pitch of the cells 14, the thicker the average thickness T of the cooling sheet 10 after the water absorbent 13 absorbs water.

  Next, the manufacturing method of the cooling sheet 10 of 1st embodiment is demonstrated. The cooling sheet 10 is manufactured through an adhesive transfer process, a water absorbent arrangement process, a temporary bonding process, and a main bonding process. In the adhesive transfer step, the adhesive for temporarily joining the first sheet-like member 11 and the second sheet-like member 12 is transferred to one of the first sheet-like member 11 and the second sheet-like member 12. It is a process to do. Here, for example, water-soluble glue having a low viscosity is used as the adhesive. Then, the adhesive is transferred to the second sheet-like member 12. The water-absorbing agent arranging step is a step of arranging the water-absorbing agent 13 at a plurality of locations at intervals on the sheet-like member to which glue has been transferred in the adhesive transfer step. A temporary joining process is a process of temporarily joining the 1st sheet-like member 11 and the 2nd sheet-like member 12 so that the water absorbing agent 13 arrange | positioned at the said location in each location may be enclosed. The main joining step is a step of subjecting the temporarily joined portions to the first sheet-like member 11 and the second sheet-like member 12 temporarily joined in the temporary joining step. Hereinafter, the contents of each process will be described in detail.

  First, the adhesive transfer process will be described. FIG. 3A is a schematic front view of a glue transfer tool used in the adhesive transfer step, and FIG. 3B is a schematic side view of the glue transfer tool. 4A is a view for explaining the second sheet-like member 12 to which glue is transferred at intervals along the horizontal direction, and FIG. 4B is a diagram in which glue is transferred in a grid pattern. It is a figure for demonstrating the two sheet-like member.

  In the present embodiment, the glue transfer operation is performed using the glue transfer tool 20 shown in FIG. As shown in FIG. 3, the glue transfer tool 20 includes a flat plate-like main body 21 and a plurality of glue attaching protrusions 22. The plurality of paste adhering protrusions 22 are attached at regular intervals along a certain direction on one surface of the main body 21. In the paste transfer operation, first, an appropriate amount of water-soluble glue having a low viscosity is placed in a container having a flat bottom (not shown, hereinafter also referred to as “glue container”), and a paste transfer tool is placed in the paste container. The paste is adhered to the paste adhering protrusion 22 by placing 20 and immersing the tip of the adhesive adhering protrusion 22 in the adhesive. Next, the cloth-made second sheet-like member 12 is placed on a flat surface, and the glue transfer tool 20 is placed in the second sheet-like manner so that the paste adhering protrusion 22 to which the glue adheres faces the second sheet-like member 12. Place on member 12. Then, when the glue transfer tool 20 is removed, the glue 17 is linearly transferred in the vertical direction on the second sheet-like member 12 at intervals along the horizontal direction, as shown in FIG. The

  Next, the glue transfer tool 20 is again placed in the glue container, and the glue is attached to the paste attaching projection 22. After that, the glue adhering protrusion 22 to which the glue adheres faces in the lateral direction with respect to the second sheet-like member 12 in which the glue 17 is linearly transferred in the longitudinal direction with a gap along the lateral direction. Further, the glue transfer tool 20 is placed on the second sheet-like member 12 so as to face the second sheet-like member 12. When the glue transfer tool 20 is removed, the glue 17 is linearly transferred in the vertical direction on the second sheet-like member 12 at intervals along the horizontal direction, as shown in FIG. 4B. At the same time, the glue 17 is linearly transferred in the horizontal direction at intervals along the vertical direction. That is, the glue 17 is transferred to the second sheet-like member 12 in a lattice shape.

  As described above, in the first embodiment, the glue transfer operation is performed in such a manner that the glue is transferred at intervals along the fixed direction with respect to the sheet-like member, and the direction substantially perpendicular to the interval direction. It is decided to divide it into the work of transferring glue at intervals along the same. This is due to the following reason. If a glue transfer tool having a structure similar to that of a pressing tool (see FIG. 7) described later, that is, a structure having a grid-like paste adhesion projection, is used, the glue is simultaneously transferred at intervals along the vertical and horizontal directions. It can be performed. However, in such a glue transfer tool, the paste attaching projections are formed in a lattice shape arranged in both the vertical and horizontal directions, so the glue transfer tool is placed in the glue container and glue is applied to the glue attaching projections. When adhered, the low-viscosity glue accumulates at the intersection of the glue adhesion projections due to capillary action. For this reason, when the glue is transferred to the sheet-like member using the glue transfer tool in such an adhesive state, the glue spreads at a portion corresponding to the intersecting portion on the sheet-like member. On the other hand, the transfer of glue as in the present embodiment is carried out separately on the sheet-like member by performing the transfer at intervals along the horizontal direction and the transfer at intervals along the vertical direction. In this case, it is possible to prevent the glue from partially spreading. Note that, for example, when a high-viscosity glue is used as the adhesive, the glue can be transferred using a glue transfer tool having a structure having a grid-like paste adhesion projection.

  Next, the water absorbing agent arranging step will be described. FIG. 5A is a schematic front view of a water-absorbing agent arranging tool used in the water-absorbing agent arranging step, FIG. 5B is a schematic rear view of the water-absorbing agent arranging tool, and FIG. It is a BB arrow direction schematic sectional drawing. 6A is a view for explaining the second sheet-like member 12 in which the water absorbent 13 is arranged at the center of each lattice formed by the transferred glue 17, and FIG. It is a CC sectional view schematic sectional drawing of the 2nd sheet-like member 12. FIG.

  In the present embodiment, the placement work of the water absorbing agent 13 is performed using the water absorbing agent placement tool 30 shown in FIG. As shown in FIG. 5, the water-absorbing agent arrangement tool 30 includes a flat plate-like main body portion 31, a plurality of holes 32 for introducing the water-absorbing agent 13, and a groove portion 33 for preventing glue. is there. As the main body 31, for example, a rectangular plate having a thickness of 3 mm is used. A lattice-shaped groove 33 is formed on one surface (front surface) of the main body 31. The groove 33 is formed so that its size and shape coincide with the size and shape of the glue 17 transferred onto the second sheet-like member 12 in a grid pattern. The plurality of hole portions 32 are opened at the central portions of the plurality of lattices formed by the groove portions 33. Here, for example, a hole 32 having a diameter of 5.5 mm is formed.

  In the arrangement work of the water absorbent 13, first, the water absorbent arranger 30 is placed on the second sheet-like member 12 on which the glue 17 is transferred in a lattice shape. At this time, alignment is accurately performed so that the groove portion 33 of the water absorbing agent arranging tool 30 faces the glue 17 transferred to the second sheet-like member 12. Thereby, since the glue 17 does not adhere to the water-absorbing agent arranging tool 30, various troubles that occur when the glue adheres to the water-absorbing agent arranging tool 30 can be avoided. Next, the water absorbing agent 13 is put into all the holes 32 from the back side of the water absorbing agent arranging tool 30. Actually, when manufacturing the cooling sheet 10 having a structure having a plurality of 20 mm square cells 14, for example, about 50 milligrams of the granular water-absorbing agent 13 is introduced from each hole 32. Thereafter, when the water-absorbing agent arranging tool 30 is pulled upward, as shown in FIG. 6, an appropriate amount of the water-absorbing agent 13 is arranged at the center of each lattice in the second sheet-like member 12 to which the glue 17 is transferred in a lattice shape. The

  Next, the temporary joining process will be described. Fig.7 (a) is a schematic front view of the pressing tool used at a temporary joining process, FIG.7 (b) is a schematic side view of the pressing tool.

  The temporary joining operation of the first sheet-like member 11 and the second sheet-like member 12 is performed using the pressing tool 40 shown in FIG. As shown in FIG. 7, the pressing tool 40 includes a flat plate-like main body 41 and a pressing protrusion 42. The pressing protrusions 42 are formed in a vertical and horizontal grid pattern at the same interval as the interval of the glue 17 transferred in a grid pattern in the second sheet-like member 12. In the temporary bonding operation, first, the first sheet-like member 11 is overlaid on the second sheet-like member 12 to which the glue 17 has been transferred in a lattice shape before the glue 17 dries. Next, the pressing tool 40 is moved between the first sheet-like member 11 and the second sheet-like member 12 so that the position of the glue 17 transferred onto the second sheet-like member 12 and the position of the pressing projection 42 coincide. Place on top and press. In this way, the first sheet-like member 11 and the second sheet-like member 12 are bonded in a lattice shape with the glue 17. When the paste 17 is dried and the first sheet-like member 11 and the second sheet-like member 12 are temporarily joined, the water absorbent 13 in each cell 14 is not even if there is some vibration or the like. There is no spillage from between the sheet-like member 11 and the second sheet-like member 12 or movement to another cell.

  After the temporary joining step, the main joining step is performed. In this embodiment, the main joining of the first sheet-like member 11 and the second sheet-like member 12 is performed by stitching with a thread. Specifically, with respect to the first sheet-like member 11 and the second sheet-like member 12 that are temporarily joined in the temporary joining step, the temporarily joined portions (glued portions) are vertically and horizontally using a sewing machine. Suture. Here, after the first sheet-like member 11 and the second sheet-like member 12 are temporarily joined as described above, the water absorbent 13 accommodated in each cell 14 does not move from the cell 14. Even during the suturing operation using the sewing machine, the water-absorbing agent 13 accommodated in each cell 14 does not spill or move outside. Thus, as shown in FIG. 1, the water-absorbing agent 13 is disposed at a plurality of locations between the first sheet-like member 11 and the second sheet-like member 12, and a plurality of cells 14 are formed at a pitch of about 20 mm. A cooling sheet 10 having a structure is completed.

  Thus, the cooling sheet 10 can be easily manufactured by using various dedicated tools such as the glue transfer tool 20, the water absorbing agent placement tool 30, and the pressing tool 40. Moreover, after temporarily joining the 1st sheet-like member 11 and the 2nd sheet-like member 12 so that the water absorbing agent 13 arrange | positioned at the said location in each location may be enclosed, the 1st sheet-like member 11 and the 2nd sheet-like member 12 are included. By temporarily joining the temporarily joined portion in step 1, the water-absorbing agent 13 arranged at each location spills from the arranged location or moves to another location after the temporary joining until the final joining is completed. The occurrence rate of defective products can be greatly suppressed.

  In addition, when mass production of the cooling sheet 10 is performed, the cooling sheet 10 may be manufactured continuously. Even in this case, it is reasonable to include the above-described temporary joining step in the manufacturing process of the cooling sheet 10, and when a water-soluble glue having a low viscosity is used as an adhesive for temporary joining, transfer of the adhesive is performed. The operation is to transfer the glue in a straight line with an interval along the fixed direction with respect to the sheet-like member, and to make the glue into a straight line with an interval along the direction substantially perpendicular to the transferred direction. It is desirable to perform the transfer separately. Further, the method of temporary bonding is not limited to a method using an adhesive such as glue, and depending on the type of cloth used for the sheet-like member, a method of bonding by heat is also applicable.

  The cooling sheet of the first embodiment includes a water absorbing agent disposed at a plurality of locations at intervals between a first sheet-shaped member and a second sheet-shaped member disposed to face each other, and at each location at the location. Formed by joining the first sheet-like member and the second sheet-like member so as to surround the arranged water-absorbing agent, and comprising a plurality of cells containing the water-absorbing agent arranged at each location. Yes. As a result, the water absorbing agent can be arranged on the cooling sheet at a substantially constant interval, and even if a cooling sheet having a large area is produced, the cooling sheet can have flexibility. For this reason, when a planar cooling sheet in which such water-absorbing agents are arranged at substantially constant intervals is used, it is possible to cool a portion having a large area, such as a human torso. In addition, since the water-absorbing agent stored in each cell cannot be moved from the position of the cell by storing the water-absorbing agent in each cell, a large-area cooling sheet is wrapped around a human torso, for example. However, the water-absorbing agent containing water is not biased downward as a whole. Furthermore, when this cooling sheet is used in an environment where the outside air temperature is relatively high and relatively dry, the water absorbed by the water absorbing agent evaporates actively, and the water is absorbed by the heat of vaporization taken away from the surroundings when the water evaporates. Since the temperature rise of the agent can be effectively suppressed, the rate of temperature rise of the water-absorbing agent can be moderated, and therefore the cooling effect can be maintained for a long time. As described above, the cooling sheet of the first embodiment has a simple structure, but has a sufficient cooling capacity in a relatively low humidity environment even when the outside air temperature is high, and is used for various purposes. Is possible.

  In the cooling sheet of the first embodiment, the first sheet-shaped member and the second sheet-shaped member and the second sheet-shaped member arranged opposite to each other are stitched together to sew the portion surrounding the water-absorbing agent. Since the sheet-like members are joined, the water-absorbing agent can be reliably disposed in each cell, and movement to other cells can be completely prevented. Furthermore, by using cloth as a material for the first sheet-like member and the second sheet-like member, the cooling sheet can have sufficient durability.

In the first embodiment, the case where a plurality of cells are formed at a pitch of about 20 mm in the cooling sheet has been described. As the cell pitch increases, the average thickness T of the cooling sheet after the water-absorbing agent absorbs water becomes thicker. Therefore, generally, the cell pitch may be determined according to the purpose of use of the cooling sheet. Actually, the inventors have investigated that when the cell area is S, the average thickness T of the cooling sheet is about S ^1/2 × 0.2. Practically, it is preferable to determine the cell area within a range from 0.3 cm ² to 16 cm ² . When the area of the cell is 0.3 cm ² , the average thickness T of the cooling sheet is about 1 mm. If a cell having an area smaller than this is formed, an excessive amount of water-absorbing agent should be placed in the cell. This is because the duration of the cooling effect becomes extremely short. On the other hand, when the area of the cell is 16 cm ² , the average thickness of the cooling sheet is about 8 mm, and if a cell having an area larger than this is formed, a large amount of water-absorbing agent can be placed in the cell. This is because when the water absorbing agent absorbs water, the cooling sheet becomes heavier and inconvenient. In addition, when forming a cell having an area in the range of 0.3 cm ² to 16 cm ² , the mass of the water absorbing agent per 1 m ^{2 of} the cooling sheet is from 10 grams, depending on the size of the cell and the characteristics of the water absorbing agent. A range up to 300 grams is appropriate.

  Moreover, in said 1st embodiment, although the case where the shape of the cell was made into square shape was demonstrated, not only a square but a shape, such as a rectangle, a parallelogram, and a rhombus, according to the intended purpose of use of a cooling sheet. You may form in. Furthermore, in the cooling sheet, for example, the cell located in the upper part is formed with a pitch of 10 mm, the cell located in the central part is formed with a pitch of 15 mm, and the cell located in the lower part is formed with a pitch of 20 mm. The shape of the cells may be changed in each part of the cooling sheet, such as forming some cells in a square shape and forming other cells in a rectangular shape. Thereby, when water is absorbed by the water-absorbing agent, the average thickness T can be changed for each part of one cooling sheet.

  Furthermore, in the first embodiment described above, the case where about 50 milligrams of the granular water absorbing agent is arranged in each cell has been described. For example, by changing the size of each hole formed in the water absorbing agent arranging tool, You may make it vary the quantity of the water absorbing agent arrange | positioned at a cell for every cell. Generally, the higher the amount of the polymer water-absorbing polymer, the easier it is to absorb water, but there is a tendency that the absorbed water is difficult to evaporate. When such a polymer water-absorbing polymer is used as a water-absorbing agent, the portion of the cooling sheet that is well exposed to wind (outside air) easily evaporates, so the amount of the polymer-absorbing polymer disposed in the cell of the portion is increased, It is desirable to reduce the amount of high molecular polymer that is placed in the cells in the portion of the cooling sheet that is less susceptible to wind. As a result, even if the cooling sheet is used in an environment where the wind is blowing from a predetermined direction, the time until the water completely evaporates is adjusted to be substantially the same in any part of the cooling sheet. Therefore, the duration of the cooling effect can be made uniform. Thus, various cooling sheets can be produced according to the purpose of use, depending on the size of the cell, the shape of the cell, the amount of the water-absorbing agent, the characteristics of the water-absorbing agent, and the like.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 8A is a schematic front view of a simplified cooling garment according to the second embodiment of the present invention, and FIG. 8B is a schematic view of the simplified cooling garment attached to a human torso as viewed from the front side. FIG. 8 and FIG. 8C are schematic views when the simplified cooling garment attached to the human torso is viewed from the back side.

  A simplified cooling garment 50 shown in FIG. 8 includes a cooling sheet 10A and four adjustment belts 51a, 51b, 52a, 52b. As the cooling sheet 10A, one having substantially the same structure as the cooling sheet 10 of the first embodiment is used. The external dimensions of the cooling sheet 10A used in the simple cooling garment 50 are, for example, 30 cm long and 80 cm wide, and the cooling sheet 10A is configured to have 600 (15 × 40) cells 20 of about 20 mm square. Has been. Further, as shown in FIG. 8A, adjustment belts 51a and 51b are respectively attached to the upper and lower portions of the left end portion of the cooling sheet 10A, and the adjustment belts 52a are respectively attached to the upper and lower portions of the right end portion of the cooling sheet 10A. , 52b are attached.

  When using the simplified cooling garment 50, first, a water absorbing operation is performed on the cooling sheet 10A. After that, as shown in FIGS. 8B and 8C, the cooling sheet 10A is attached to the body so as to be wound around the body, and the adjustment belt 51a and the adjustment belt 52a are tied together, and the adjustment belt 51b and the adjustment belt 52b are attached. By binding, the cooling sheet 10A is brought into close contact with the body. Thus, the simple cooling garment 50 can be easily worn. Here, in the present specification, the expressions “attaching the cooling sheet on the body” and “adhering to the body” not only mean attaching the cooling sheet directly to the body, but also attaching the cooling sheet to the underwear. It shall also mean attaching to work clothes, protective clothes, etc. and making them adhere to the body through them. In addition, when applying a cooling sheet | seat to cooling clothing, either the 1st sheet-like member 11 and the 2nd sheet-like member 12 may be sufficient as the side closely_contact | adhered to a body among cooling sheets.

  There are the following two cooling effects on the body by the simple cooling garment 50. First, the first cooling effect will be described. The temperature of the cooling sheet 10A in which water is absorbed by the water absorbent 13 is substantially the same as the temperature of the absorbed water, and the temperature of this water is much lower than the temperature of the body surface. For this reason, when the cooling sheet 10A is attached to the body, the heat of the body surface moves to the cooling sheet 10A due to the temperature difference between the cooling sheet 10A and the body surface, thereby cooling the entire body. Actually, since the average thickness T of the cooling sheet 10A after the water absorbing agent 13 has absorbed water is about 4 mm, the same effect as that of attaching a sheet-like cold pack having a thickness of 4 mm is obtained. Therefore, the simple cooling garment 50 can cool the body at the moment of wearing. Next, the second cooling effect will be described. The water absorbing agent (water absorbing polymer) 13 used for the cooling sheet 10A is different from a water absorbing agent that absorbs water used in paper diapers and the like and does not easily release water. The water is easily evaporated. For this reason, when the simple cooling garment 50 was worn and the cooling sheet 10A in which water was absorbed by the water absorbent 13 was brought into close contact with the body, the entire body was substantially covered with a water layer having a thickness of 4 mm. Has the same effect. Therefore, if the outside air is hot and the humidity is not so high, the entire body can be sufficiently cooled by utilizing the heat of vaporization taken from the surroundings when the water absorbed by the water absorbent 13 evaporates. Moreover, since the temperature rise of the water absorbing agent that has absorbed water can be effectively suppressed by the heat of vaporization taken away from the surroundings when the water evaporates, the rate of temperature rise of the water absorbing agent is moderated and the cooling effect is prolonged. Can be maintained for hours. As described above, the cooling effect of the simple cooling garment 50 has two effects, and the simple cooling garment 50 can be regarded as a sheet-shaped cold pack that lasts for a very long time.

[Third embodiment]
Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 9A is a schematic view of the third embodiment of the present invention as seen from the front side in the state of wearing the cooling clothes, and FIG. 9B shows the state of wearing out the cooling clothes as seen from the back side. FIG. 10 (a) is a schematic development view of a garment in the cooling garment, FIG. 10 (b) is a schematic development view of a close-contact mesh means in the cooling garment, and FIG. 10 (c) is its cooling. FIG. 10D is a schematic plan view of the first cooling sheet in the clothing, and FIG. 10D is a schematic plan view of the second cooling sheet in the cooling clothing.

  The cooling garment 100 of the third embodiment is worn on the upper body of a person using a shoulder belt. As shown in FIGS. 9 and 10, two first cooling sheets 10B and 10B, The second cooling sheet 10 </ b> C, the clothes 110, and the contact mesh means 120 are provided. In FIG. 9, the contact mesh means 120 is not worn, and only the clothes 110 attached with the cooling sheets 10B, 10B, and 10C are shown.

  As the first cooling sheet 10B and the second cooling sheet 10C, those having substantially the same structure as the cooling sheet 10 of the first embodiment are used. The two first cooling sheets 10B and 10B are mainly for cooling the front right part and the front left part of the fuselage, respectively, and the second cooling sheet 10C is for cooling the back part of the fuselage. For this reason, the size and shape differ between the first cooling sheet 10B and the second cooling sheet 10C. Actually, the first cooling sheet 10B is formed in a substantially square shape as shown in FIG. 10 (c), while the second cooling sheet 10C is formed in a substantially rectangular shape as shown in FIG. 10 (d). Has been. In addition, a hook-and-loop fastener 19 is provided at each of the four corners on the surface on one side of each of the cooling sheets 10B, 10B, and 10C. As shown in FIG. 9, each cooling sheet 10 </ b> B, 10 </ b> B, 10 </ b> C is attached to a predetermined position of the clothing body 110 with a hook-and-loop fastener 19. In addition, it is desirable not to arrange the water absorbing agent 13 at the four corners where the surface fasteners 19 of the respective cooling sheets 10B, 10B, and 10C are provided. If the water-absorbing agent 13 is not present at each corner, each corner provided with the hook-and-loop fastener 19 does not swell even if the cooling sheets 10B, 10B, and 10C absorb water, and the cooling sheets 10B, 10B, and 10C after water absorption. This is because it can be easily attached to the clothes 110.

  As shown in FIG. 10A, the clothing body 110 includes a substantially rectangular sheet-like member 111, two shoulder belts 112, 112, and four adjustment belts 113a, 113b, 114a, 114b. The sheet-like member 111 is a cloth for covering the trunk. A total of 12 hook-and-loop fasteners 115 for attaching the cooling sheets 10B, 10B, and 10C are provided on the surface of the sheet-like member 111, that is, the surface opposite to the surface that comes into contact with the body when worn. As shown in FIG. 10A, the four hook-and-loop fasteners 115 respectively provided on the right side portion P1 and the left side portion P2 of the sheet-like member 111 are combined with the hook-and-loop fastener 19 of the cooling sheet 10B to thereby fix the cooling sheet 10B. The four hook-and-loop fasteners 115 provided in the central portion P3 of the sheet-like member 111 are detachably attached to the clothes body 110, and the cooling sheet 10C is connected to the hook-and-loop fastener 19 of the cooling sheet 10C. This is for detachably attaching to the clothes 110. In the third embodiment, a waterproof material is used as the material of the sheet-like member 111. Thereby, it is possible to prevent the water absorbed by the cooling sheets 10B, 10B, and 10C from being transferred to the underwear worn under the sheet-like member 111.

  The two shoulder belts 112 and 112 are attached to the upper right end portion and the upper left end portion of the sheet-like member 111, respectively. That is, the garment 110 is of a type that is worn with the shoulder belts 112, 112 on the shoulder. As shown in FIG. 10A, adjustment belts 113a and 113b are attached to the upper and lower portions of the left end portion of the sheet-like member 111, respectively, and adjustments are made to the upper and lower portions of the right end portion of the sheet-like member 111, respectively. Belts 114a and 114b are attached. As shown in FIG. 9A, after the shoulder belts 112 and 112 are put on the shoulders, the adjustment belt 113a and the adjustment belt 114a are connected together, and the adjustment belt 113b and the adjustment belt 114b are connected, so that the clothing body 110 is put on the upper body. It can be worn in close contact.

  The contact mesh means 120 is for further improving the adhesion of the cooling sheets 10B, 10B, and 10C attached to the clothing body 110 to the body. As shown in FIG. 10B, the contact mesh means 120 includes a substantially rectangular mesh member 121 and six stretch adjustment belts 122a, 122b, 122c, 123a, 123b, 123c having stretchability. ing. As the material of the mesh member 121, a material having a coarse mesh is used. Here, it is desirable that the mesh-like material has a finer mesh than the size of the cells of the cooling sheets 10B and 10C.

  Also, as shown in FIG. 10 (b), stretch adjustment belts 122a, 122b, 122c are respectively attached to the upper, middle and lower portions of the left end portion of the mesh member 121, and the upper portion of the mesh member 121 at the right end portion. In addition, stretch adjustment belts 123a, 123b, and 123c are attached to the central portion and the lower portion, respectively. The contact mesh means 120 is mounted on the clothes 110 to which the cooling sheets 10B, 10B, 10C are attached. That is, each cooling sheet 10B, 10B, 10C attached to the clothes body 110 is covered with a mesh member 121, and thereafter, on the front side of the body, the expansion / contraction adjustment belt 123a, the expansion / contraction adjustment belt 124a, and the expansion / contraction adjustment belt 123b are expanded / contracted. By attaching the adjustment belt 124b and the expansion / contraction adjustment belt 113c and the expansion / contraction adjustment belt 124c, the contact mesh means 120 is mounted on the clothing 110. Here, in this embodiment, the length of each expansion-contraction adjustment belt 122a-123c is set short beforehand. For this reason, when the contact mesh means 120 is mounted on the clothes body 110, the contact mesh means 120 is attached to the clothes body 110 by the elastic force of each of the expansion / contraction adjustment belts 122a to 123c. , 10B, and 10C, the cooling sheets 10B, 10B, and 10C are more closely attached to the body than when the close mesh means 120 is not used.

  The method of using the cooling garment 100 of the third embodiment and the cooling effect thereof are the same as the simplified cooling garment 50 described above. That is, when the cooling garment 100 is worn, the heat of the body surface moves to the cooling sheets 10B, 10B, and 10C due to the temperature difference between the cooling sheets 10B, 10B, and 10C and the body surface, thereby cooling the entire body. In addition, the entire fuselage can be sufficiently cooled using the heat of vaporization taken from the surroundings when the water absorbed by the water absorbent 13 of the cooling sheets 10B, 10B, 10C evaporates. In particular, in the cooling garment 100 of the third embodiment, the cooling mesh 10120 is provided, so that the cooling sheets 10B, 10B, and 10C can be further adhered to the body. There is a feature that improves.

  By the way, after wearing the cooling clothing 100, in each cell 14 of the cooling sheets 10B, 10B, 10C, the water absorbed by the water absorbent 13 evaporates, and the volume of the water absorbent 13 decreases, so that the cell An air layer may be generated in 14. For example, when a part of the water absorbed by the water absorbent 13 evaporates, an air layer is generated in the cell 14 as shown in FIG. When such an air layer is generated, even if wind (outside air) hits the cooling sheet, evaporation of the water still absorbed by the water-absorbing agent 13 is hindered by the presence of the air layer, so that the cooling effect is reduced. Since the close contact mesh means 120 presses the cooling sheet so as to be in close contact with the body, it is possible to prevent the air layer from being generated in the cell 14 by using the force that the close contact mesh means 120 presses the cooling sheet. . In other words, the average thickness T of the cooling sheet immediately after wearing the cooling garment 100 is thick, but as the water absorbed in the water absorbent 13 in the cell 14 evaporates, the contact mesh means 120 presses the cooling sheet. Since the average thickness T of the cooling sheet can be automatically reduced by force, a constant cooling effect is obtained until water is absorbed by the water absorbent 13 after the water absorbent 13 in the cell 14 absorbs water. Can be maintained. The contact mesh means 120 corresponds to the “pressing means” of the present invention.

  In this way, the contact mesh means 120, in addition to the role of bringing the cooling sheet into close contact with the body, generates an air layer generated in each cell 14 as the water absorbed by the water absorbent 13 evaporates. Since it plays the role of preventing, the mesh roughness of the mesh-like member 121 of the contact mesh means 120 may be a little finer than the size of the cell 14 of the cooling sheet. This is because if the mesh-shaped member 121 is too coarse, the mesh-shaped member 121 itself prevents the water absorbed by the water-absorbing agent 13 from evaporating.

  In general, when walking, the front and side surfaces of the body are susceptible to wind, but the back surface of the body is less susceptible to wind. For this reason, when walking while wearing the cooling clothing 100, assuming that the characteristics of the cooling sheets 10B, 10B arranged on the front side of the body and the cooling sheet 10C arranged on the back side of the body are the same, The cooling sheets 10B and 10B arranged on the front side of the sheet are dried before the cooling sheet 10C arranged on the back side of the body, and the cooling effect duration time differs between the cooling sheets 10B and 10C. End up. In order to prevent this, for example, for the cooling sheet 10C disposed on the back side, the amount of the water-absorbing agent 13 to be put in each cell 14 compared to the cooling sheets 10B and 10B disposed on the front side. The time until the water absorbed by the water-absorbing agent 13 completely evaporates may be shortened. Moreover, by using the water absorbing agent 13 having different evaporation characteristics between the cooling sheets 10B and 10B arranged on the front side and the cooling sheet 10C arranged on the back side, or by changing the size of the cell 14, It is also possible to solve this problem.

  In the cooling garment of the third embodiment, each cooling sheet has a water absorbing agent disposed at a plurality of locations at intervals between the first sheet-shaped member and the second sheet-shaped member disposed to face each other, Formed by joining the first sheet-like member and the second sheet-like member so as to surround the water-absorbing agent arranged in the place, and a plurality of cells containing the water-absorbing agent arranged in each place. Since the water absorbing agent is arranged on the cooling sheet at almost regular intervals, even if a cooling sheet having a large area is produced, the cooling sheet has flexibility. For this reason, by attaching a flat cooling sheet in which such water-absorbing agents are arranged at almost constant intervals to the clothing, it is possible to produce a cooling clothing with high flexibility and to absorb water when the cooling clothing is worn. The arrangement of the agent is not biased downward. In addition, when the cooling garment of the third embodiment is used particularly in an environment where the outside air temperature is high and relatively dry, the water absorbed by the water-absorbing agent is vigorously evaporated and taken away from the surroundings when the water evaporates. The body can be sufficiently cooled using heat of vaporization. In addition, the temperature rise of the water-absorbing agent can be effectively suppressed by the heat of vaporization taken away from the surroundings when the water evaporates, so that the rate of temperature rise of the water-absorbing agent can be moderated to maintain the cooling effect for a long time. Can do.

  In the third embodiment, the case where a waterproof material is used as the material for the sheet-like member of the clothing body has been described. This is because water absorbed by the water absorbent of the cooling sheet is transferred to underwear or the like. It is for preventing. However, even if you wear a cooling garment, in an environment where you sweat a little, the underwear will get wet with sweat, so it is not necessary to use a waterproof material as the material for the sheet-like member of the garment. For example, the sheet-like member may be made of a mesh-like material or the like.

  Some waterproof materials have moisture permeability and others do not have moisture permeability. However, if a waterproof material having moisture permeability is used as a material for the sheet-like member of the clothes, the cooling sheet dries. Even when the cooling capacity is lost, the evaporation of sweat is not so hindered, and therefore, there is an advantage that the discomfort caused by sweat is not so much given to the wearer of the cooling clothes. On the other hand, if a waterproof material that does not have moisture permeability is used as the material for the sheet-like member of the clothes, replace the cooling sheet as soon as the cooling capacity of the cooling sheet is lost, or remove the cooling clothing itself. Just do it. If cooling clothing is used in this way, an inexpensive material that does not have moisture permeability, such as vinyl, can be used as the material for the sheet-like member of the clothing.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 11A is a schematic view of the fourth embodiment of the present invention as seen from the front side when the cooling clothes are worn, and FIG. 11B is a view of the cooling clothes as seen from the back side. FIG.

  As shown in FIG. 11, the cooling garment 200 of the fourth embodiment further includes an air-conditioning garment 210 in addition to the cooling garment 100 of the third embodiment. Here, the air-conditioning garment 210 is worn on the cooling garment 100.

  The air-conditioning garment 210 includes a clothing material portion 211 that covers a predetermined part of the body, and two fans (air blowing means) 212 and 212 for forcibly generating an air flow in the space between the clothing material portion 211 and the body. It is to be prepared. The clothing material portion 211 is configured so that air does not leak from the hem or the like by using a fabric that does not easily leak air. The two fans 212 and 212 are attached to the lower part on the back side of the clothing material portion 211 as shown in FIG. Each fan 212, 212 rotates in a direction to take outside air into the clothing material portion 211.

  When the two fans 212 and 212 are rotated, the fans 212 and 212 take outside air (outside air) into the clothing material portion 211, and the taken outside air passes through the space between the clothing material portion 211 and the body. It flows upward along the neck and is discharged to the outside from the neck and cuffs. When such an air-conditioning garment 210 is used alone, sweat generated from the body is evaporated by generating an air flow parallel to the surface of the body, and the heat of vaporization is taken away from the body during the evaporation. It can be used to cool the body. Details of the air-conditioning garment 210 are disclosed in Patent Document 1 described above. However, for example, when the outside air is too hot, even if the air-conditioning suit 210 is used alone, the supply of sweat corresponding to the heat is not in time, and a sufficient cooling effect cannot be obtained.

  The cooling garment 200 of the fourth embodiment is a combination of the cooling garment 100 of the third embodiment and the air conditioning garment 210 described above in order to enhance the cooling effect. In such a cooling garment 200, as shown in FIG. 11, the air-conditioning garment 210 is worn on the cooling garment 100 of the third embodiment. When the fans 212 and 212 of the air-conditioning garment 210 are driven and rotated, a large amount of outside air is substantially parallel to the space inside the air-conditioning garment 210, that is, the space between the clothing material portion 211 and the cooling garment 100. Can be distributed. For this reason, evaporation of the water absorbed by the water absorbent 13 of the cooling sheets 10B, 10B, and 10C attached to the cooling clothing 200 can be promoted by the circulating outside air. Thus, in the cooling garment 200 of the fourth embodiment, by using the function of the air-conditioning garment 210 that generates an air flow substantially parallel to the body surface, the evaporation of water absorbed by the water absorbent 13 is promoted. Therefore, the cooling effect can be further enhanced and the body can be sufficiently cooled even in a relatively dry environment even if the outside air temperature is considerably high.

  However, since the air volume is particularly large around the fan, the water absorbing agent in the portion around the fan is dried before the water absorbing agent in the other portions. In order to prevent this, it is only necessary to arrange a water-absorbing agent that does not easily evaporate the absorbed water in the cooling sheet cells around the fan, or to adjust the amount of air hitting the cooling sheet around the fan. . Here, as an example of a method of adjusting the air volume hitting the cooling sheet, for example, a method of attaching a fine mesh material on the cooling sheet whose air volume is to be adjusted can be mentioned.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the gist.

  In the third and fourth embodiments, the case where the cooling garment has three cooling sheets has been described. However, the cooling garment has only one large-area cooling sheet, and this one cooling sheet is used as a garment. You may make it attach to. The number of cooling sheets used for the cooling garment may be two or four or more.

  In the third and fourth embodiments, the case where the cooling sheet is attached to the clothes using a hook-and-loop fastener has been described. However, as shown in FIG. , 130, and 130, and a cooling sheet may be placed in each bag 130 to attach the cooling sheet to the clothes 110. In this case, even without using the contact mesh means, the mesh-like bag can have a role of preventing the generation of an air layer generated in each cell by pressing the cooling sheet. . Moreover, it is also possible to attach the cooling sheet to the clothing using a hook or a general fastener instead of the hook-and-loop fastener.

  In the second, third, and fourth embodiments, the case where the cooling clothes are clothes worn on the upper body has been described. However, the cooling clothes are clothes such as trousers worn on the lower body and a specific body. It may be attached to the part.

  Further, in the fourth embodiment, the case where two fans are provided in the air-conditioning clothing has been described, but one or more fans may be provided in the air-conditioning clothing. Further, the direction of the outside air flowing along the fuselage may be reversed, for example, by rotating the fan in the opposite direction.

  In each of the above embodiments, the case where cloth-made ones are used as the first sheet-like member and the second sheet-like member in the cooling sheet, but one of the first sheet-like member and the second sheet-like member is used. If the sheet-like member has good water wettability (water absorption) and the other sheet-like member has good air permeability (breathability), the material for the first sheet-like member and the second sheet-like member Any material other than cloth may be used. For example, a nonwoven fabric can be used. In particular, when the cooling sheet is used for the purpose of cooling the human body, it is desirable that the first sheet-like member and the second sheet-like member have sufficient durability but are not so thick.

  In each of the above embodiments, the case where a low-viscosity water-soluble glue is used as an adhesive for temporarily joining the first sheet-like member and the second sheet-like member in the cooling sheet is described. The present invention is not limited to this, and any adhesive suitable for the material of the first sheet-like member and the second sheet-like member may be used as the adhesive for temporary joining. Can be used.

  In each of the above embodiments, the case where a water-absorbing polymer is used as the water-absorbing agent stored in each cell of the cooling sheet has been described, but the water-absorbing agent is not limited to the water-absorbing polymer, and has a good water absorption and Any material can be used as long as the absorbed water easily evaporates. Further, in each of the above embodiments, for example, as illustrated in FIG. 6, the case where one granular water-absorbing agent is arranged in each cell has been described. However, a plurality of granular water-absorbing agents are arranged in each cell. It may be. In fact, it is desirable to use a sand granule as the water absorbing agent. This is because the finer the grain, the larger the surface area and the faster the water absorption rate. Further, the water-absorbing agent is not limited to a granular one, and may be a powdery one.

  Further, as the water absorbing agent, it is possible to use a water absorbing agent which is used for a paper diaper or the like and has a good water absorption but a very low evaporation property. A cooling sheet produced using such a water-absorbing agent can have a role as a sheet-like cold insulating agent (cold insulating sheet). In this case, the cold insulation sheet is sold in a lightweight state that is not water-absorbed, and can be used to have the user absorb water at the time of use. There are advantages.

  Furthermore, although each said embodiment demonstrated the case where the cooling sheet | seat of this invention was mainly used in order to cool a human body, the intended purpose of the cooling sheet | seat of this invention is not limited to cooling of a human body. . For example, it can be used for cooling animals other than humans.

  As described above, the cooling sheet according to the present invention includes a water absorbing agent disposed at a plurality of locations at intervals between the first sheet-shaped member and the second sheet-shaped member disposed to face each other. A plurality of storage portions for storing the water absorbent disposed at each location, formed by joining the first sheet member and the second sheet member so as to surround the water absorbent disposed at the location at the location; It is configured with. As a result, the water absorbing agent can be arranged on the cooling sheet at a substantially constant interval, and even if a cooling sheet having a large area is produced, the cooling sheet can have flexibility. For this reason, when a planar cooling sheet in which such water-absorbing agents are arranged at substantially constant intervals is used, it is possible to cool a portion having a large area, such as a human torso. In addition, since the water absorbing agent stored in each storage unit cannot be moved from the position of the storage unit by storing the water absorbing agent in each storage unit, a large area cooling sheet is wound around, for example, a human torso. Even if used, the water-absorbing agent containing water is not biased downward as a whole. Further, when the cooling sheet according to the present invention is used in an environment where the outside air temperature is high and relatively dry, the water absorbed by the water absorbing agent evaporates actively and takes away from the surroundings when the water evaporates. Since the temperature increase of the water absorbing agent can be effectively suppressed by the heat of vaporization, the rate of temperature increase of the water absorbing agent can be moderated, and the cooling effect lasts for a long time. Therefore, the cooling sheet according to the present invention has a simple structure, but has sufficient cooling capacity in a relatively low humidity environment even when the outside air temperature is high, such as clothes for heat countermeasures, It can be used for various purposes.

10, 10A, 10B, 10C Cooling sheet 11 First sheet-like member 12 Second sheet-like member 13 Water-absorbing agent 14 Cell (storage part)
16 Seam (joint)
17 Glue 19 Surface fastener 20 Glue transfer tool 21 Main body part 22 Adhesive projection part 30 Water absorbing agent placement tool 31 Main body part 32 Hole part 33 Groove part 40 Pusher 41 Main body part 42 Protrusion part for pressing 50 Simple cooling clothing 51a, 51b , 52a, 52b Adjustment belt 100 Cooling garment 110 Clothing body 111 Sheet-like member 112 Shoulder belt 113a, 113b, 114a, 114b Adjustment belt 115 Surface fastener 120 Adhering mesh means (pressing means)
121 Mesh-like members 122a, 122b, 122c, 123a, 123b, 123c Expansion / contraction adjustment belt 130 Mesh-like bag 200 Cooling clothes 210 Air-conditioning clothes 211 Clothes part 212 Fan (air blowing means)

Claims (13)

  A first sheet-like member, a second sheet-like member disposed opposite to the first sheet-like member, and a plurality of locations with an interval between the first sheet-like member and the second sheet-like member The water absorbing agent disposed in the area, and the respective portions formed by joining the first sheet-like member and the second sheet-like member so as to surround the water absorbing agent disposed in the respective portions at the respective portions. A cooling sheet, comprising: a plurality of storage portions that store the water-absorbing agent disposed in the storage.   The cooling sheet according to claim 1, wherein the water absorbing agent has a characteristic of absorbing water and evaporating the absorbed water.   The cooling sheet according to claim 1 or 2, wherein one of the first sheet-like member and the second sheet-like member is a member having water absorption, and the other is a member having air permeability.   Of the first sheet-like member and the second sheet-like member, a material having low water wettability is used as the material of one sheet-like member, and a material having high water wettability is used as the material of the other sheet-like member. The cooling sheet according to claim 1, 2, or 3.   The cooling sheet according to claim 1, wherein a water-absorbing polymer is used as the water-absorbing agent.   The first sheet-like member and the second sheet-like member are joined by stitching a portion surrounding the water-absorbing agent with respect to the first sheet-like member and the second sheet-like member arranged to face each other. The cooling sheet according to claim 1, 2, 3, 4 or 5.   The cooling sheet according to claim 1, 2, 3, 4, 5, or 6, wherein a cloth is used as a material for the first sheet-like member and the second sheet-like member. An arrangement step of arranging the water-absorbing agent at a plurality of locations at intervals between the first sheet-like member and the second sheet-like member arranged to face each other,
A temporary joining step of temporarily joining the first sheet-like member and the second sheet-like member so as to surround the water-absorbing agent disposed at the location in each location;
After the temporary joining step, a main joining step of main joining the temporarily joined portions of the first sheet-like member and the second sheet-like member;
The manufacturing method of the cooling sheet | seat characterized by the above-mentioned.   The method for manufacturing a cooling sheet according to claim 8, wherein the first sheet-like member and the second sheet-like member are temporarily joined using an adhesive.   In the temporary joining step, the adhesive is linearly transferred at intervals along a certain direction with respect to any one of the first sheet-like member and the second sheet-like member. Next, the adhesive is transferred in a straight line at intervals along a direction substantially perpendicular to the spaced direction, and then the one sheet-like member to which the adhesive is transferred and the other The method for manufacturing a cooling sheet according to claim 9, wherein the first sheet-like member and the second sheet-like member are temporarily joined by overlapping the sheet-like member. A first sheet-like member, a second sheet-like member disposed opposite to the first sheet-like member, and a plurality of locations with an interval between the first sheet-like member and the second sheet-like member The water absorbing agent disposed in the area, and the respective portions formed by joining the first sheet-like member and the second sheet-like member so as to surround the water absorbing agent disposed in the respective portions at the respective portions. One or a plurality of cooling sheets having a plurality of storage portions for storing the water-absorbing agent disposed in
A clothes-like body that is formed using a mesh-like material or a waterproof sheet-like material, and can cover a predetermined part of the body;
With
A cooling garment characterized in that the water-absorbing agent of each of the cooling sheets absorbs water, and the water-absorbing cooling sheets are attached to a surface of the clothing body opposite to the surface in contact with the body.   The cooling garment according to claim 11, further comprising a pressing unit that presses each of the cooling sheets attached to the clothing body, which is manufactured using a mesh-shaped material. It further includes an air-conditioning garment having a clothing part covering a predetermined part of the body, and one or a plurality of air blowing means for forcibly generating an air flow in a space between the clothing part and the body,
Wearing the air-conditioning clothing on the clothing body to which the cooling sheet is attached,
Driving the air blowing means causes the outside air to circulate inside the air-conditioning garment, and promotes evaporation of water absorbed by the water absorbent of the cooling sheet attached to the clothing body by the circulated outside air. The cooling garment according to claim 11 or 12.

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