JP2007224450A - Clothing and headgear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide clothing such as headgear being lightweight, high in thermal insulation effect, good in air permeability while improving its heat-blocking and thermal-insulating functions when it is hot, and also enabling heat retaining ability when it is cold. <P>SOLUTION: The clothing such as headgear comprises a vacuum thermal insulation material 10, which is made by the following procedure: Two sheets of gas-barrier film with one side bearing a thermoweldable layer are arranged so as to face the thermoweldable layers to each other and a core material 1 is interposed therebetween to make a bag form, the inside of which is sealed under reduced pressures followed by heating under ordinary pressures to effect mutual thermal welding of the thermoweldable layers so as to follow the core material's profile. The vacuum thermal insulation material 10 thus made is bored with through holes 4 at the welded parts and air flow paths 5 are formed between the rows formed by the core materials 1. Thus, air permeability is secured by the through holes 4 and cooling effect is provided by the chimney effect of the air flow paths 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to apparel such as a hat that does not impair aesthetics and comfort while improving direct heat and radiant heat shielding and heat insulation functions.

  Conventionally, hats, clothing, and the like have been desired to be lightweight and have high heat insulation and heat shielding effects. In particular, there has been a demand for a material that is not easily affected by the external environment depending on the season, has a high heat retention effect, has good air permeability, and is durable enough to withstand long-term use.

  In response to such a demand, various products using a forced cooling medium have been proposed for hats.

  For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 11-269714) proposes a hat provided with a pocket-shaped cooling medium housing portion into which a cooling medium for cooling the head is placed.

  Patent Document 2 (Japanese Patent Application Laid-Open No. 2003-88543) proposes a cooling medium that can be easily and repeatedly re-cooled even in a home refrigerator. The cooling medium can be used without using a dedicated helmet or hat.

  In patent document 3 (Unexamined-Japanese-Patent No. 2001-73219), the cap which can mount | wear with the drink container frozen on the cap is proposed.

  In patent document 4 (Unexamined-Japanese-Patent No. 11-131317), the edge which has a cavity in the part which hits the forehead of a hat is formed, and the cool storage agent which consists of a water absorbing polymer is enclosed in this cavity.

  In patent document 5 (Unexamined-Japanese-Patent No. 9-296319), the air-conditioning hat using a Peltier device is described.

  Patent Document 6 (Japanese Patent Laid-Open No. 9-47467) proposes putting granular dry ice in a bag and attaching this bag to the inside of a hat. Since dry ice is granular, the bag can be deformed along the shape of the head and neck, which can increase the cooling effect.

  Patent Document 7 (Japanese Patent Laid-Open No. 8-27610) describes a cooling radiator attached to a cap. It is possible to blow comfortable cold air that is sufficiently cold even under hot weather to the frontal part and the face part.

In Patent Document 8 (Patent No. 2727300), a cap for protecting the head uses a foam material of closed cell type as a heat insulating material for the core material, and a large number of holes are formed through the core material to ensure air permeability. What has been proposed.
JP-A-11-269714 JP 2003-88543 A JP 2001-73219 A JP-A-11-131317 JP-A-9-296319 JP 9-47467 JP-A-8-27610 Patent No. 2727300

  However, in the case where a cooling medium or the like is installed, or in a configuration in which water is absorbed into a highly water-absorbing polymer and the head is cooled by heat of vaporization, the weight of the hat becomes heavy, and the comfort and practicality of the hat are impaired. There is. Moreover, what can be repeatedly cooled and used in a home refrigerator is convenient, but the cooling medium needs to be cooled in the refrigerator in advance, so it cannot always be used. Furthermore, when the head is rapidly cooled with a cooling medium such as a cold drink or dry ice, a bad effect such as a headache may occur.

  In addition, a device using a Peltier element or a radiator is complicated in configuration and very expensive.

  The present invention has been conceived from such circumstances, and is a lightweight hat that has a high heat insulating effect. When it is hot, it has a good air permeability while improving heat insulating and heat insulating functions. The purpose is to provide clothing such as.

  In order to achieve the above object, the apparel of the present invention has a plurality of gas barrier films having a heat-welded layer on one side, with the heat-welded layers facing each other, and a plurality of cores in the middle. The bag body is characterized by having a vacuum heat insulating material in which the inside of the bag body is sealed under reduced pressure and heated under normal pressure so that the heat-welded layers are heat-welded so as to follow the shape of the core material.

  The plurality of core members may be arranged in a line, and the air flow path may be formed in such a manner that the heat-welded portions where no core member exists are substantially linear or three-dimensionally continuous.

  As another configuration, a plurality of gas barrier films having a heat-welded layer on one side are arranged so that the heat-welded layers face each other, and a plurality of core members are arranged in the middle. The heat-welding layers of the gas barrier films facing each other are welded together to form a vacuum heat insulating material, and the air-welding passage is formed so that the heat-welding portion without the core material is substantially linear or three-dimensionally continuous. It is characterized by.

  The air flow passage of the heat welded portion is configured to be formed in the vertical direction of the clothing, the air flow passage is configured to be formed on both surfaces of the vacuum heat insulating material, or the air flow passage is The structure is formed on one side of the vacuum heat insulating material, the heat welding portion where the core material does not exist is configured to have a through hole, or the core material of the vacuum heat insulating material is subjected to external impact and impact. The configuration may be a cushioning material that relaxes, the cross-sectional area of the flow passage may be gradually increased from one to the other of the flow passage, or the clothing may be a cap.

  According to the present invention, in clothing such as a hat, it is lightweight, has a high heat insulating effect, has excellent air permeability while improving functions of heat insulation and heat insulation in hot weather, and is excellent in both heat insulation in cold weather. Can have an effect. In the vacuum heat insulating material of the present invention, the gas barrier film is in close contact with the core material, and the heat sealing layers of the gas barrier film are also heat-sealed around the core material so that the heat insulating effect is obtained. Is expensive. Further, even if the vacuum insulation material is damaged at one place, it can be limited to the place where the heat divergence or the entry is damaged, and the effect that the damage does not spread to the surroundings is achieved. By providing the through hole, air permeability can be ensured, and the conditions that the radiation heat blocking effect and the air permeability are good can be satisfied at the same time. If the air flow passage is formed, the heat generated on the body surface can be easily discharged to the outside through the flow passage. When the flow path is provided in the up and down direction of the garment, it acts like a chimney and can easily release heat. By forming the through hole, excess heat accumulated in the body can be released to the outside through this hole. By changing the core material and the gas barrier film to one having an appropriate property, it is possible to obtain clothing resistant to external impacts.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram for explaining a method for producing a vacuum heat insulating material according to the present invention. FIG. 1 (a) shows a state in which a plurality of core materials are aligned on a lower gas barrier film and an upper gas barrier sheet is overlaid. A perspective view and (b) are perspective views in which a portion other than the opening is welded around the gas barrier film so as to form a bag shape. 2A is a plan view of the vacuum heat insulating material, and FIG. 2B is an enlarged cross-sectional view taken along the line AA of FIG. 2A.

  As shown in FIG. 1A, the plurality of core members 1 are arranged in a grid pattern on the lower gas barrier film 2 and fixed with an adhesive. An upper gas barrier film 2 is placed thereon, and as shown in FIG. 1B, the surrounding mesh portion is welded by heat sealing or the like leaving the opening 3 to form a bag body 10 '.

  The air in the bag body 10 'is extracted from the opening 3, the pressure in the bag body 10' is reduced, and the opening 3 is welded and sealed by heat sealing or the like. At this time, the upper and lower gas barrier films 2 are bent along the outer shape of the core material 1, and the upper and lower gas barrier films 2 are in close contact with each other at a portion where the core material 1 is not present. The thing of this state is heated under a normal pressure, and the heat sealing | fusion layers of the gas-barrier film 2 are welded, and it is set as the vacuum heat insulating material 10 as shown to Fig.2 (a), (b). In FIG. 2 (a), the welded portion 10a around the vacuum heat insulating material 10 is a welded portion in which the opening 3 when the bag 10 'is decompressed and when the pressure is reduced is welded by heat sealing or the like, and the inner welded portion 10b. Is a portion where the gas barrier films 2 are heated and welded together under normal pressure, and the welded portion 10 c is a welded portion between the core material 1 and the gas barrier film 2. Thereafter, a large number of through-holes 4 are formed in the welded portion 10b where the heat-sealing layers of the gas barrier film 2 without the core material 1 are welded to each other.

  As the core material 1, it is possible to use any of plastic foam, organic or inorganic fibers or powders, or a combination thereof.

  Organic or inorganic fibers or powders, or combinations thereof, include organic fibers, inorganic fibers, mixtures of organic fibers and inorganic fibers, or organic or inorganic powders in these fiber layers. Any of the body or a mixture of both may be mentioned. Furthermore, organic powder or inorganic powder, or a mixture of organic and inorganic powders can be used.

Plastic foams include open cell rigid polyurethane foam, open cell flexible polyurethane foam, closed cell rigid polyurethane foam, closed cell flexible polyethylene foam, open cell flexible polyethylene foam, closed cell rigid polystyrene foam, open cell rigid polyphenol foam, etc. can do. As the fiber body, glass fiber, ceramic fiber, rock wool, silica alumina wool or the like can be used as the inorganic fiber. The organic fiber may be a plastic fiber such as nylon fiber, PET fiber or polypropylene fiber, or a vegetable fiber such as kenaf fiber or banana fiber. As the powder, a known material mainly composed of dry silica, wet silica, pearlite or the like can be used as the inorganic powder. Moreover, powder, such as kenaf, can be used for the organic powder. Preferably, a glass fiber mat obtained by applying 0.5 to 1.5 wt% of an organic binder to glass fiber, laminating and compression molding, or glass fiber compression molding by needle punch without applying a binder such as a binder. Examples thereof include a glass fiber mat obtained by collecting mats or glass fibers using water and then heat-compressing them.

  The gas barrier film 2 constituting the bag body of the present invention is generally in the order of the surface protective layer, the gas barrier layer, and the heat fusion layer from the outside to the inside of the bag body 10 '.

  As the surface protective layer, a plastic film excellent in weather resistance and impact resistance such as polyethylene terephthalate and nylon is used. These are used singly or in combination of two or more in a plurality of layers.

  As the gas barrier layer, a metal foil or a film (deposited film) obtained by laminating a metal deposited film or a ceramic deposited film on a plastic film can be used. As the metal foil, aluminum foil, stainless steel foil, or the like can be used, and as the vapor deposition film, aluminum, stainless steel, alumina, silicon carbide, or the like can be used. In addition, these may be used alone or in combination of two or more.

  As the heat sealing layer, a plastic film such as low density polyethylene (specific gravity of 0.90 or more and less than 0.94), high density polyethylene (specific gravity of 0.90 or more and less than 0.94), or polypropylene is used. These are appropriately selected depending on the use of the vacuum heat insulating material. Low-density polyethylene is superior in terms of ease of heat-sealing, but high-density polyethylene and polypropylene are preferred in view of adaptability to the temperature of the heat-insulating atmosphere, weather resistance, and gas barrier properties of the heat seal part.

  The shape of the core material 1 is not limited to the rectangle shown in the embodiment, and may be an arbitrary shape such as a circle, an ellipse, or a triangle, or a combination of a plurality of shapes.

  Arrangement of the core material 1 is also arbitrary, but it is desirable that the arrangement be deformable so that it can follow the shape of the three-dimensional heat insulating surface, and as an example, it is arranged so that it can be bent by gas barrier film portions in two directions, three directions or more. . When a flexible core material is used with this arrangement, deformation according to the complex shape of the heat insulating surface is possible.

  In the embodiment of the present invention, the core material 1 is arranged in a grid pattern. However, as shown in FIG. 2A, the vertical and horizontal intervals of the core material 1 are wider in the vertical direction and wider in the horizontal direction. The portion without the core material on the wider side is linearly continuous so as to become an air flow passage 5 described later.

  The core material 1 is preferably fixed in advance on the heat-sealing layer that is the inside of the gas barrier film 2. The core material glass mat is pulled out to form the core material 1, which is fixed on the heat-sealing layer of the gas barrier film 2 with an adhesive or the like. Here, as the adhesive, inorganic adhesives such as colloidal silica, alumina sol, water glass, starch, urethane, polyvinyl alcohol, acrylic rubber, butadiene rubber, etc., as long as they do not hinder the fusion of the core material and film by heating. Organic adhesives or the like can be used.

  At this time, a known gas adsorbent may be supported by a method such as embedding in the core material 1. As a result, the gas generated from the core material 1 and the adhesive is adsorbed, the vacuum state is maintained for a longer period, and the heat insulation performance can be maintained.

  Around the core material 1, it is desirable to have a heat sealing layer of at least 3 mm or more. If it is 3 mm or more, the decompression degree of a core part can be maintained for a long time.

  Moreover, the space | interval of the core material 1 and the core material 1 is 3 mm or more, Preferably it is 3-10 mm, More preferably, it is 3-7 mm. If the interval is narrower than this, the width of contact between the films is small and fusion is difficult. Further, although depending on the shape of the core material 1, if the shortest interval is too wide, the thermal conductivity as a vacuum heat insulating material is deteriorated.

  The bag 10 'with the opening 3 shown in FIG. 1B is heated at a temperature of 60 to 130 ° C., preferably 80 to 120 ° C., for about 30 to 90 minutes in a hot air drying furnace or the like. By this heating, the volatile gas can be removed from the core material 1 and the gas barrier film 2, and the initial heat insulation performance when the vacuum heat insulating material 10 is obtained can be improved.

  Then, the bag body 10 'is decompressed, the opening 3 is sealed with a heat seal or the like, and the whole is heated under normal pressure in a hot air drying furnace or the like. Since the pressure inside the bag 10 'is reduced, the upper and lower gas barrier films 2 and 2 are in pressure contact with the core material 1 in the portion of the core material 1, and the upper and lower gas barrier films 2 and 2 in the portion without the core material 1. The heat-welded layers are in pressure contact with each other. By heating in this state, the heat-welding layers of the upper and lower gas barrier films 2 are welded to each other, and each core member 1 is independently air-tightly sealed.

  The heat welding is performed at a temperature that is at least higher than the melting point of the plastic film constituting the heat welding layer in the hot air drying furnace, and is heated for about 1 to 20 minutes. It is preferable to heat at a temperature 5 to 35 ° C. higher than the melting point of the plastic for 3 to 10 minutes. If the temperature is lower than this and the time is short, the heat-sealing strength becomes insufficient, and if the temperature is high and the time is long, the gas barrier film 2 is adversely affected.

  Further, the core material 1 and the bag body 10 ′ are also fused during the heating, and the gas barrier film 2 is in close contact with the outer shape of the core material 1. As a result, the gas barrier film 2 covering any one of the core materials 1 is broken when a sharp point from the outside collides with the gas barrier film 2. Can be prevented from peeling from the core material 1. Moreover, the welding part 10b around the core material 1 can protect the airtightness of the adjacent core material 1, and can prevent destruction of the adjacent decompression part.

  Basically, how heat is transferred can be broadly divided into three elements: conduction (solid, gas thermal conduction), convection, and radiation. Among them, the heat conduction of gas has a great influence on the heat insulation performance. In the vacuum heat insulating material of the present invention, the heat insulating performance is drastically improved by making this void into a vacuum state, that is, by bringing the thermal conductivity of the gas as close to zero as possible.

  The vacuum heat insulating material manufactured in this way is very lightweight, and has a heat insulating performance about 10 times that of polystyrene foam and about 5 times that of rigid urethane foam, far exceeding the performance of other conventional heat insulating materials. It has a heat insulation performance that surpasses that of the product, and can be used in a wide range of fields. Further, by devising the shape and arrangement of the core material, it is possible to freely follow a three-dimensional shape such as a hat. Furthermore, it can also be sewn with a sewing machine or the like on top of the outer and lining.

  FIGS. 3 to 6 are diagrams showing an example in which the vacuum heat insulating material 10 of the present invention is used for a cap, FIG. 3 is a plan view of the cap, and FIG. 4 is a plan view of one vacuum heat insulating material used for the cap. 5 is an enlarged sectional view taken along line BB in FIG. 3, and FIG. 6 is an enlarged sectional view taken along line CC in FIG.

  The cap 20 is composed of a hemispherical main body 21 and a collar 22 attached to the front surface thereof. As shown in FIGS. 5 and 6, the main body 21 has a structure in which the vacuum heat insulating material 10 is sandwiched between an outer surface material 23 and an inner lining material 24.

  The outer material 23 and the lining material 24 use the cloth used for a normal hat, and are breathable. If the thickness of a part of the core material 1 is about 1 mm, the vacuum heat insulating material 10 can be used with almost no change from a normal hat, but is not particularly limited to this thickness. Absent. Moreover, since the weight of the vacuum heat insulating material 10 is very light, a hat does not become heavy.

  As shown in FIGS. 3 to 6, the main body 21 of the cap 20 is formed by sandwiching six vacuum insulating materials 10 having a substantially triangular shape between a surface material 23 and a lining material 24 and connecting them together. ing. FIG. 4 shows one of the vacuum heat insulating materials 10. The triangle shown in FIG. 4 has a base on the lower side of the hat and a vertex on the upper side of the hat. As shown in FIG. 4, the vacuum heat insulating material 10 is formed by arranging the core material 1 in a plurality of rows in the vertical direction of the cap 20 and forming an air flow passage 5 between the rows. The flow path 5 is substantially straight when the vacuum heat insulating material 10 is planar, but has a three-dimensional curved shape when attached to the cap 20. In addition, a large number of through holes 4 are formed in a portion of the core material 1 where the gas barrier films 2 are bonded to each other.

  As shown in FIG. 5, the flow path 5 is closed by the outer surface 23 or the lining 24 and is formed so as to go from the edge of the cap 20 to the top of the cap 20.

  By the way, humans have a function to cool the body by sweating. This is a so-called heat dissipation effect. The cooling function by sweating is controlled by the brain according to the surrounding environment and the amount of work, and the human body performs sweating action according to the amount of heat released. Basically, the elements of heat are broadly divided into psychology, physiology, and physics. Among them, physical elements include external environmental conditions such as temperature, radiation temperature, and air flow, and heat-insulating and moisture-permeable clothing and hats. Depending on conditions.

  Physiological factors are related to metabolic rate, blood flow, and sweating. When heat stress increases, mechanisms such as skin surface area control and sensory organ sensitivity control work. Psychological factors include warmth and comfort.

  It is common general knowledge that the human body maintains a comfortable life by controlling body temperature by sweating. For example, when it is hot in summer, discomfort and eventually heat stroke are thought to be due to the fact that the heat dissipation effect due to human sweating is not working well. Can cause Therefore, it is considered important to assist the cooling and heat dissipation effect of the head by promoting natural ventilation and sweating in a more natural manner while protecting the brain and body so that the heat dissipation effect can be controlled well.

  On the other hand, in winter, it is important to keep the head warm, but natural ventilation is also important to control the heat dissipation of the human body.

  When the hat 20 of the present invention is covered on a hot summer day, the vacuum heat insulating material 10 blocks heat from the outside of the hat 20 and keeps the inside of the hat 20 at a low temperature. Sweat and water vapor are generated by the heat from the head, which reaches the flow passage 5 on the back side of the vacuum heat insulating material 10 through the lining 24. From here, it further passes through the through hole 4 and reaches the flow path 5 on the outer surface side, passes through the outer surface 23 and is discharged to the outside. The through hole 4 ensures air permeability. Further, when the flow path 5 is in the vertical direction of the cap 20, an air flow rising in the flow path 5 is generated due to the chimney effect, and the internal heat is raised in the flow path 5 from the top of the hat 20. It can be discharged to the outside through the surface material 23.

  Wind ventilation, which is generally called by installing the air flow passage 5, the windward surface is blown by the wind, receives pressure (control) to push the air into the interior, the leeward surface is Receiving pressure (negative pressure) to suck out from inside. By forming the air flow path 5 in the vacuum heat insulating material 10, wind ventilation is efficiently performed. That is, outside air is sucked from the periphery of the lower end of the main body portion 21 of the cap 20 and sent to the top portion to promote a cooling effect.

  On a cold winter day, the warm heat of the head is not released outside the hat by the vacuum heat insulating material 10, and keeps a warm state. Although some heat is released from the through-hole 4, most of the heat remains without being released, and the head is not cooled. Even in winter, when the amount of exercise is large and water vapor from sweat is generated from the head, it is possible to prevent the water vapor from being discharged from the through hole 4 to the outside through the flow path 5 and becoming excessively hot.

  FIG. 7 is a diagram comparing heat insulation performance and heat radiation performance of a conventional hat and the hat of the present invention. A conventional hat and the hat of the present invention were placed on a table in the same room, irradiated with an infrared lamp, and a temperature sensor was placed inside the main body 21 for measurement. The one-dot chain line is the temperature of the outside air (indoor), the two-dot chain line is the temperature inside the main body of the conventional hat, and the solid line is the temperature inside the main body of the hat of the present invention. The vertical axis is temperature (° C.), and the horizontal axis is time (minutes).

  When the outside air temperature is close to 40 ° C., the temperature inside the main body rises to 27-28 ° C. in the conventional hat after 30 minutes, whereas the hat of the present invention is about 22 ° C. compared to the conventional hat. A difference of about 5 ° C. was observed, and it was possible to confirm the heat insulation effect and heat dissipation effect of the hat of the present invention even in the rapid temperature rise.

  The above is the temperature difference by the effect of the vacuum heat insulating material 10, the heat radiation by the through-hole 4, and the chimney effect by the air flow path 5, and the stable temperature transition of the cap of the present invention was confirmed.

  FIG. 8 is a plan view of the vacuum heat insulating material 10 according to the second embodiment of the present invention. This second embodiment is characterized by the flow passage 15 of the vacuum heat insulating material 10 used for the cap. That is, the flow passage 15 is narrow on the lower side and wide on the upper side. The air flowing through the flow passage 15 becomes faster as the cross-sectional area of the flow path is smaller, and conversely, the air becomes slower as the cross-sectional area of the flow path is larger. On the other hand, the faster the flow velocity, the lower the static pressure and the stronger the suction force. If the lower portion of the flow passage 15 is narrow, the flow velocity on the lower side of the flow passage 15 becomes faster, the suction force on the lower side of the cap becomes stronger, and it becomes easier to take in outside air.

  Although illustration is omitted, contrary to the flow passage 15 in FIG. 8, the lower side may be wide and the upper side may be narrowed. In that case, the suction force on the upper side of the cap becomes stronger.

  FIG. 9 is a view showing a vacuum heat insulating material according to a third embodiment of the present invention, and corresponds to FIG. In this vacuum heat insulating material 30, the lower gas barrier film 2 remains flat, and the upper gas barrier film 2 is uneven according to the shape of the core material 1. With such a configuration, the flow passage 35 is formed only on one side of the vacuum heat insulating material 30.

  Structurally, the flow path 5 can be either double-sided or single-sided, and can be selected according to the external environment. For example, in the case of high humidity and high temperature in summer, it is possible to enhance the ventilation by negative pressure by arranging grooves on both surfaces of the vacuum heat insulating material 10 so that the air flow on the cap surface flows faster. On the other hand, in winter, it is also possible to weaken the ventilation due to negative pressure by setting the flow passage 5 only on one side.

  In the present invention, the impact resistance of the vacuum heat insulating material 10 can be increased by selecting the material of the core material 1. Since the core material 1 is sealed in a reduced pressure state, the core material having a high density and the core material having a large mass are sealed, which is effective in reducing impact and impact.

  For example, in the case of a golf hat or the like, there is no end to accidents caused by hitting the head with a golf ball. Therefore, it is desirable to have a characteristic of having a hardness and relaxing the hitting while being a flexible hat.

  As a core material that can achieve such an object, it is possible to use a glass mat or the like, but it is also possible to use, for example, metals as a core material, and a more protective effect against impact, impact, friction, and vibration. It may be possible to increase

  The hardness of hats and clothes can be set by selecting the core material, and the hardness can be set according to the intended use.

  Although the above embodiment has been described by taking a hat as an example, it can also be applied to other clothing, shoes, sneakers, boots, and the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the method to manufacture the vacuum heat insulating material of this invention, (a) is a perspective view which shows the state which arranges and arranges a several core material on the lower gas barrier film, and overlaps an upper gas barrier sheet, b) is a perspective view in which a portion other than the opening is welded around the overlapped gas barrier film to form a bag. (A) is a top view of a vacuum heat insulating material, (b) is an expanded sectional view cut | disconnected by the AA line of (a). It is a top view of a hat. A plan view of one vacuum insulation used for the hat, FIG. 4 is an enlarged sectional view taken along line B-B in FIG. 3. It is an expanded sectional view of the CC line of FIG. It is the diagram which compared the heat insulation performance and heat dissipation performance of the conventional cap and the cap of this invention. It is a top view of the vacuum heat insulating material of 2nd Example of this invention. It is a figure which shows the vacuum heat insulating material of 3rd Example of this invention, and is a figure corresponding to FIG.2 (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core material 2 Gas barrier film 3 Opening 4 Through-hole 5 Flow path 10 Vacuum heat insulating material 10 'bag 15 Flow path 20 Cap 21 Main body part 23 Outer material 24 Lining 30 Vacuum heat insulating material 35 Flow path

Claims (10)

  A plurality of gas barrier films having a heat-welded layer on one side are disposed so that the heat-welded layers face each other, and a plurality of cores are disposed in the middle to form a bag body, and the inside of the bag body is sealed under reduced pressure And the clothing which has the vacuum heat insulating material heated under normal pressure and heat-welded so that the said heat welding layers may follow a core material shape.   2. The garment according to claim 1, wherein the plurality of core materials are arranged in an array, and the air flow path is formed so that the heat-welded portions without the core material are substantially linearly or three-dimensionally continuous. .   A plurality of gas barrier films having a heat-welded layer on one side are arranged so that the heat-welded layers face each other, and a plurality of core members are arranged in the middle. A clothing characterized in that weld layers are welded together to form a vacuum heat insulating material, and an air flow passage is formed so that the heat-welded portion without the core material is substantially linear or three-dimensionally continuous.   The clothing according to claim 2 or 3, wherein the air flow passage of the heat welding portion is formed in a vertical direction of the clothing.   The clothing according to any one of claims 2 to 4, wherein the air flow passage is formed on both surfaces of the vacuum heat insulating material.   The clothing according to any one of claims 2 to 4, wherein the air flow passage is formed on one side of the vacuum heat insulating material.   The clothing according to any one of claims 1 to 6, wherein a through-hole is provided in the heat-welded portion where the core material does not exist.   The clothing according to any one of claims 1 to 7, wherein the core material of the vacuum heat insulating material is a cushioning material that reduces external impact and impact.   The clothing according to any one of claims 2 to 8, wherein a cross-sectional area of the flow passage gradually increases from one to the other of the flow passages.   The clothing according to any one of claims 1 to 8, wherein the clothing is a hat.

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