JP2007209595A - Pack member for heat insulation and cold insulation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive pack member for heat insulation and cold insulation capable of shortening a heating time and raising a heat insulation characteristic. <P>SOLUTION: The pack member 1 is constituted by allowing a latent heat storage base material, which is mixed with a moisture absorbent containing moisture, to be gelled and adopted as a filler 3, and sealing the filler 3 in a heat-resistant and flexible container 2. Porous substance and fibrous material are mixed as the moisture absorbent. The surface of the fibrous material is coated with a synthetic resin film. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pack member used for heat insulation and cold insulation, and more particularly, the present invention relates to a heat insulation and cold insulation pack member suitable for relieving symptoms such as stiffness and pain by heating or cooling an affected part.

  Hot spring therapy is effective and effective in relieving fatigue, relieving muscle pain, increasing blood circulation, and activating visceral function. However, the hot spring therapy has the disadvantage that the patient himself / herself needs to go to the hot spring area, and that the heart is burdened by the whole body bath. In order to eliminate these drawbacks, there is a limb heat bath apparatus that can obtain a thermotherapy effect comparable to the whole body bath of hot spring therapy by immersing only the limbs in a bathtub. However, this hand and foot warm bath device is not easy to handle for use at home, and it is difficult to locally heat and treat a site with stiffness or pain.

  There is a moisture transpiration type heat pack member that locally heats affected areas such as the shoulder, waist, and feet to relieve or eliminate stiffness and pain. This thermal pack member is a gas-permeable bag filled with silica gel that absorbs moisture in the atmosphere, and when used, the thermal pack member is heated in a microwave to generate steam heat. . This thermal pack member can be used by heating it with a microwave oven, so it is easy to handle, but once it is used, it cannot be reused until the silica gel absorbs moisture in the air. Have difficulty.

  As a thermal pack member that can be used after being heated in a microwave oven, one in which an aqueous dispersion of microcapsules containing a latent heat storage material such as paraffin wax is filled in a packaging material has been proposed (see, for example, Patent Document 1). ). When this type of heat pack member is irradiated with microwaves, the temperature of the water that is the dispersion medium of the microcapsules rises, and when the temperature rises further, the latent heat storage material in the microcapsules begins to melt, and the latent heat storage material It is possible to store latent heat with a melting point according to the type.

JP-A-8-19564

  A microcapsule containing a latent heat storage material is a minute container having a diameter of about 1 μm to several mm, and the latent heat storage material is microencapsulated by various methods according to the properties of the latent heat storage material. The particle size of the microcapsule is preferably 1 to 50 μm, but manufacturing a microcapsule having a small particle size requires a long time and a large amount of energy industrially. In addition, microcapsules having a large particle size are physically weak, and if the microcapsule coating is broken, the latent heat storage material and water are separated. And if it reuses in that state, only water may be heated and there is a possibility of expanding the packaging material, and the reuse is impossible.

  The present invention has been made paying attention to the above-mentioned problem, and does not encapsulate the latent heat storage material, thus eliminating the risk of inconveniences associated with it, realizing a reduction in heating time and an improvement in heat retention characteristics. An object of the present invention is to provide a pack member for keeping warm and cold.

  The pack member for heat insulation and cold insulation according to the present invention is configured by sealing a latent heat storage base material mixed with a moisture adsorbing material containing moisture into a container having heat resistance and flexibility. Is.

  When the above pack member is heated by a microwave oven, the temperature of the water adsorbed on the moisture adsorbent rises due to the vibration of water molecules due to the microwave, and when the temperature rises further, the latent heat storage substrate starts to melt, and the latent heat storage It is possible to store latent heat with a melting point corresponding to the type of substrate. Moreover, warm heat is uniformly transmitted by the gelatinized latent heat storage base material. When the pack member cools, the water molecules that have been freely moving are adsorbed and held by the moisture adsorbing material, and can be reused. The pack member is not limited to a microwave oven, and can be heated with hot water, a heater, or the like.

  The pack member according to the present invention is mainly used for the purpose of heat treatment such as stiffness and pain. However, the present invention is not limited to this, and when a cooked food is delivered, the food is heated or heated. Can be used to hold the state. Of course, it can be used for various other purposes for the purpose of keeping warm or warming.

Further, the pack member can be used for cold storage. When the pack member is placed in a freezer and cooled, the contents freeze and become solid, so when transporting fresh products, etc., rather than for therapeutic purposes, keep the fresh products at a low temperature and maintain freshness Suitable for applications such as maintaining
On the other hand, it is good to mix salt for the use for the treatment which cools a hot part like a water pillow so that the contents may not freeze.

  In the above-described configuration of the present invention, the latent heat storage base material is typically a vegetable oil such as mineral oil or sesame oil such as paraffin wax, but is not limited to such an organic latent heat storage material, An inorganic latent heat storage material can also be used.

  Since the latent heat storage base material such as paraffin wax has flammability, the latent heat storage base material is gelled to suppress fluidity so that the latent heat storage base material flows out of the container and there is no risk of fire. As a gelling agent for this gelation, a coagulant such as gelatin or hydroxystearic acid is used, and this is added to a latent heat storage base material and gelled in a jelly form. Due to this gelation, the fluidity of the latent heat storage substrate is suppressed, and since it is jelly-like, heat transfer characteristics are not deteriorated and heat is conducted uniformly.

  As the moisture adsorbent, a porous substance, a fiber, and a polymer can be used. Preferably, the moisture adsorbent is composed of one or more materials selected from a porous substance, a fiber, and a polymer. More preferably, it is composed of two kinds of materials in which a porous substance and a fibrous material are combined.

  The porous material has many fine pores inside a solid, and charcoal, activated carbon, zeolite, rice, seeds, wheat, etc. can be used. The fiber has fine gaps between the fibers, and in addition to plant fibers such as plant skin (for example, peanut skin), artificial fibers such as ceramic fibers may be used. it can. As the polymer, for example, galactomannan such as locust bean gum or guar gum can be used. The locust bean gum is obtained by pulverizing the endosperm portion of the seed of a carob tree, which is an evergreen tree, and the guar gum is obtained by pulverizing the endosperm component of the seed of a legume guar.

  For example, when charcoal or activated carbon is used as the moisture adsorbent, water is added to the material and adsorbed on the micropores. Although the fiber contains water, since the water content varies, similarly, water is added to the material to adsorb and hold a predetermined amount. The moisture content of the moisture adsorbent is desirably in the range of 0.5 wt% to 1.0 wt% of the whole. In addition, since charcoal and activated carbon radiate | emit far infrared rays, the heating and heat retention function by far infrared rays radiation are exhibited. In addition, charcoal and activated carbon also have a function of suppressing bacterial growth.

  Among the water adsorbents, in the case of a porous material such as charcoal, the water adsorbed in the micropores rises in temperature due to the vibration of water molecules by microwaves, and a part of the water is liberated. It moves through and conducts heat. On the other hand, since the fiber and the high molecular polymer have contractibility, the base material expands by heating, and as a result, the release of moisture adsorbed in the fine gaps between the fibers is suppressed.

In a preferred embodiment of the present invention, the moisture adsorbing material includes a material whose surface is coated with a synthetic resin film such as polyethylene, and is mixed with a material whose surface is not coated.
For example, when a porous material and fiber are used as the moisture adsorbing material, moisture is adsorbed on the fiber and then coated with a synthetic resin film. With this resin coating, during heating, moisture is heated while confined inside the synthetic resin film, and is not released to the outside. On the other hand, since the porous material is used without being coated after moisture is adsorbed, a part of the water adsorbed on the porous material is liberated during the heating and moves in the container. In this way, an appropriate amount of water can be adsorbed and retained as a whole, sufficient heating is possible, and the liberated water does not become excessive, and an appropriate heat transfer action can be obtained. Can be prevented from being partially accumulated and overheated, and can prevent damage to the container due to the occurrence of burns or expansion of water.

  In the configuration of the present invention, the “container” is heated in a microwave oven or the like when used, and must be able to withstand the heating, and must have heat resistance. Japanese paper or the like can be used. When the pack member is applied to the surface of the human body, it is necessary to have flexibility in order to bring the pack member into close contact with the surface of the human body. As this container, for example, if a plastic single or composite film is stacked on top and bottom and the peripheral portion is heat-welded, a flat and bag-like one can be easily manufactured.

  When the pack member having the above-described configuration is used for treatment, a fixing tool for fixing the pack member to an affected part such as a neck, a shoulder, a waist, an arm, and a leg is used. The fixing device may be in various forms, but includes a cover cloth having a storage portion for storing the pack member, a doorway through which the pack member can be taken in and out of the storage portion, and a state in which the pack member is stored in the storage portion And a fixing means for fixing the cover cloth to the human body.

After the pack member is heated with a microwave oven or the like, the pack member is accommodated in the cover cloth accommodating portion through the doorway. When the pack member is accommodated in the cover cloth accommodating portion, the entire pack member is covered, so that the pack member does not directly contact the human body.
The fixing means fixes the pack member covered with the cover cloth in close contact with the surface of the human body, and various types such as a string, a belt, a belt, and a metal fitting can be adopted.

  According to this invention, since the latent heat storage material is used without being encapsulated, it causes inconveniences associated with microencapsulation, that is, inconveniences such as high manufacturing costs, and inability to reuse due to destruction of microcapsules. There is no fear. Moreover, since the water | moisture-content adsorption material containing a water | moisture content is mixed in a latent heat storage base material, it will mostly be comprised with a latent heat storage base material, heating time will be shortened and a heat retention characteristic will improve. Further, it is possible to prevent the container from being destroyed due to a long heating time and a large amount of water.

1 and 2 show a pack member 1 according to an embodiment of the present invention.
The pack member 1 in the illustrated example is a material obtained by gelling a latent heat storage base material mixed with a moisture adsorbing material containing moisture with a gelling agent, and the filler 3 is made of synthetic resin. The container 2 is enclosed. In addition, minerals such as tourmaline and germanium that are considered to have a negative ion effect may be mixed in the filler 3.

As shown in FIG. 3, the moisture adsorbing material is composed of a porous material a made of charcoal and a fiber b made of plant skin. The surface of the fibrous material b is coated with a polyethylene film. In the figure, c is a latent heat storage substrate made of liquid paraffin.
The water content of the porous material a and the fibrous material b is set in the range of 0.5 wt% to 1.0 wt% of the whole.

  The container 2 is formed into a flat and bag shape by stacking two rectangular plastic sheets 2a and 2b up and down and thermally welding the peripheral edge. In the figure, reference numeral 4 denotes a heat welding portion that goes around, and the filler 3 is enclosed in the container 2 by the heat welding portion 4. Since this pack member 1 is used after being heated in a microwave oven, the container 2 must have heat resistance. Further, since the pack member 1 is brought into close contact with the surface of the human body, the container 2 needs to be made of a material that is relatively soft and flexible.

When the pack member 1 is heated by a microwave oven, the temperature of the water adsorbed between the fine pores of the porous material a and the fibers of the fibrous material b rises due to vibration of water molecules by microwaves. In this case, a part of the water adsorbed in the micropores of the porous material a is liberated and moves in the container 2. On the other hand, since the fiber b is resin-coated, the moisture is heated in a state of being confined inside the film.
When the temperature further rises, the latent heat storage base material c starts to melt, and latent heat storage is possible at a melting point corresponding to the type of the latent heat storage base material c. Moreover, warm heat is uniformly transmitted by the gelatinized latent heat storage base material c. When the pack member 1 is cooled, the water molecules that have been freely moving are adsorbed and held by the porous material a and the fiber b, and can be reused.

  FIG. 4 shows a fixture 5 for the pack member 1 used to fix the pack member 1 to the surface of the human body. The fixing tool 5 in the illustrated example is configured so that one to three pack members 1 can be fixed to a desired site according to the position and symptoms of the affected part. The belt-shaped cover cloth 6 and the cover cloth 6 are It is comprised with the strip | belt-shaped strings 14 and 14 for fixing to a human body.

The cover cloth 6 is formed by folding a single cloth such as a woven cloth or a non-woven cloth at the center in the width direction so as to overlap each other and stitching both end portions of the upper and lower cloth pieces so as to provide an accommodation space for the pack member 1 between the cloth pieces. Formed. The housing space is partitioned at two locations in the length direction, and three housing portions 9 having the folded portion 7 as a bottom are formed. Each accommodating part 9 can accommodate the three pack members 1 in a row with the whole covered. Each accommodating portion 9 is open on the side opposite to the folded-back portion 7, and this open portion serves as an entrance / exit 11 through which the pack member 1 can be taken in and out of each accommodating portion 9.
Hook fasteners 12 and 13 are attached to the inner surfaces of the upper and lower cloth pieces at positions corresponding to the respective entrances 11. When the opposed surface fasteners 12 and 13 are engaged with each other, the entrance / exit 11 is closed, and when the engaged surface fasteners 12 and 13 are separated, the entrance / exit 11 is opened.

  When 1 to 3 pack members 1 are fixed to parts such as the shoulder, waist, legs, and arms using the above-described fixing member 5 of the pack member 1, the full length of the cover cloth 6 may be used depending on the affected area, A part of the cloth 6 is used. In this case, the strings 14 at both ends are tied together or tied to appropriate positions on the human body. And the pack member 1 is accommodated in the cover cloth 6 by the number according to the magnitude | size of an affected part.

It is a top view which shows the external appearance of the pack member which is one Example of this invention. It is sectional drawing which follows the AA line of FIG. It is explanatory drawing which shows the state in which the porous substance and the fiber were mixed in the latent heat storage base material. It is a top view which shows the external appearance of a fixing tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pack member 2 Container a Porous material b Fibrous c Latent heat storage base material

Claims (4)

  A pack member for heat insulation and cold insulation constituted by sealing a latent heat storage base material mixed with a moisture adsorbent containing water into a container having heat resistance and flexibility.   The heat retention and cold insulation pack member according to claim 1, wherein the moisture adsorbing material is composed of one or more materials selected from a porous substance, a fiber, and a polymer.   The heat retention and cold storage pack member according to claim 1 or 2, wherein the moisture adsorbent includes a surface coated with a synthetic resin film.   The heat retention and cold insulation pack member according to any one of claims 1 to 3, wherein the moisture content of the moisture adsorbent is set in a range of 0.5 wt% to 1.0 wt% of the whole.

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