JP2002325787A - Gel packed sheet and warmer, food warmer, cold pad and food cooler using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gel packed sheet which is formed by using a crosslinkable water absorptive polymer and crosslinking this water absorptive polymer with a functional material to make it possible to impart a shape retaining property to a hydrous gel, to prevent loss of a shape, to improve the feel of use and is further formed by incorporating a far IR radiation material into the functional material or laminating and fixing the far IR radiation material on one or both surfaces of a flat bag body, thereby making it possible to effectively impart a thermal effect and cooling effect to the application area of the human body or the deep parts of food and is additionally improved in the feel of use and a warmer and cooler, food warmer, cold pad and food cooler using the same. SOLUTION: This gel packed sheet for imparting a thermal effect or cold effect to the application point is formed by sealing the hydrous gel consisting of water, the crosslinkable water absorptive polymer and the functional material as indispensable components into the flat bag in which the functional material crosslinks the crosslinkable water absorptive polymer to impart the shape retaining property to the hydrous gel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a water-absorbing polymer, particularly a cross-linkable water-absorbing polymer, and a cross-linking of the cross-linkable water-absorbing polymer by a functional substance to impart shape retention to the hydrogel. As a result, it is possible to improve the shape retention of the gel-filled sheet, to prevent the shape from being lost, and to improve the feeling of use. By laminating and fixing the substance on one or both sides of the flat bag, it is possible to extremely effectively impart a heating effect and a cooling effect to the application site of the human body and the deep part (inside) of the food, and use The present invention relates to a gel-filled sheet having a further improved feeling, and a hot / cold heating device, a food heating / heating device, a cold / hot pad and a food cooling device using the same.

[0002]

2. Description of the Related Art Chronic painful diseases in the field of orthopedics, such as chronic low back pain, stiff shoulders, muscular pain, stiff muscles, cold limbs, neuralgia, rheumatism, etc. are mainly caused by poor circulation. For these diseases, it is often the case that warming rather than cooling enhances the therapeutic effect, and since ancient times, the therapeutic method of warming the application site of the human body is to impart a heating effect such as promoting blood circulation. Is widely and generally used as a therapeutic means (thermotherapy).

[0003] Conventional hyperthermia treatments include towels, konjac, hot packs filled with hot water, paraffin baths using heated oil, poultices containing stimulants such as pepper extract, or disposable warmers. Methods such as direct application to the affected area have been adopted.

[0004] However, in thermotherapy using a heated towel, konjac, a hot pack, a paraffin bath, or the like, it is difficult to control the heat generation temperature, that is, it is too hot to cause a burn, or too cold to be sufficient. There is a problem such as not being able to obtain the hot compress effect, and since the persistence of the predetermined temperature at which the hot compress effect is obtained is extremely poor, not only can the hot compress effect be obtained for a short time, but also from the compress in a short time There is a problem that the heat of vaporization is deprived of cooling and, as a result, the affected part is cooled and adverse effects such as exacerbation of symptoms are caused, and the safety, usability and simplicity are lacking.

[0005] In particular, the warming of towels, konjac and hot packs requires complicated heating with hot water or a warming device, and it is necessary to use several cushioning materials such as towels at the start of use. There is a problem that the temperature is so high that it must be heated and the temperature drops in a short time.

Further, in the hot pack, since the enclosed hot water (water) has a high fluidity, the shape retention property is poor, and the hot pack has a feeling of sloppy feeling, a bias during use, or a shape loss.
There is also a problem that the feeling of use is significantly deteriorated.

[0007] Furthermore, the use place of the paraffin bath is restricted, and the application site is limited to limbs and the like, and there are also problems such as stains due to the use of oil.

[0008] In addition, a poultice containing a pepper extract or the like can reduce skin temperature by 1 to 2 due to stimulation of peripheral temperature perception.
It is said to increase the temperature by ℃, and it is widely used because its usage is simple.However, the frequency of side effects (skin damage) on the skin such as red spots, rashes and rashes caused by irritants is high, and bathing after application There are many problems, such as giving a strong irritation to the skin at the time, and various types are accompanied by danger.

By the way, in order to sufficiently obtain the therapeutic effect of the hot compress, there is a case where it is required to continuously provide a constant heat.

For example, when a hot compress is usually used in close contact with the human body, it can be applied for a long time at a constant temperature of 2 to 3 ° C. or higher than the skin temperature, for example, at a temperature of about 40 ° C. Is required.

[0011] However, it is difficult for the above-mentioned various types of hot compresses to continuously apply such heat.

[0012] In this regard, the disposable body warmer has a simple effectiveness in the point of sustained heat retention, and as described above, does not apply a hot compress to the affected part for a long time at a temperature of, for example, about 45 ° C. It is possible to make a hot compress at this temperature for a long time,
This may cause low-temperature burns at the application site.

In this case, there is a means for preventing the disposable body warmer from coming into direct contact with the skin surface by using a cushioning material such as a cloth or a towel. With such a configuration, sufficient heat is transmitted to the affected part. It is difficult, and a problem arises in terms of effective use of heat.

[0014] In addition, the disposable body warmer, as the name implies, is intended for one-time use.
It cannot be used repeatedly, and there is also a problem in terms of economy.

Therefore, in order to solve the above-mentioned drawbacks of the conventional hyperthermia, a gel-filled sheet heating device (a heating device), in which a hydrogel containing water and a water-absorbing polymer as essential components, is enclosed in a flat bag recently. Gelpat) has been researched and developed, and has appeared on the market.

That is, since this heating tool uses a hydrogel having relatively low thermal conductivity, it is placed in a microwave oven for home use and heated for about 2 to 3 minutes to increase the heating temperature to 3 to 3 minutes.
It can be released continuously for about 4 hours,
It is economical because it can be used repeatedly.
In addition, just adjust the heating time in the microwave,
Temperature control can be easily performed, and there is an advantage that simplicity, handleability, and safety are excellent.

[0017]

However, at present,
Generally, when a commercially available heating tool is used by being pressed against an application site of a human body, the heating tool only applies heat to the skin surface (surface layer) in contact with the heating device. Since it is not possible to apply heat to the deep part (inside), there is a problem that there is almost no effect on chronic pain caused by poor blood circulation in the deep part of the application site of the human body.

Also, when such a heating tool is used,
If the device is used for a long period of time at a certain temperature or higher, for example, at a temperature of around 45 ° C., it may cause low-temperature burns like a disposable body warmer.

However, if the heat radiation time of the heating tool is adjusted to a relatively low temperature of about 40 ° C. by adjusting the heating time by the microwave oven, a sufficient effect of the thermotherapy cannot be obtained.

Therefore, when such a heating tool is actually used, the heat radiation temperature of the heating tool is adjusted to 45 ° C., and a cushioning material such as a cloth or a towel is used between the skin surface and the heating tool. In this use condition, the temperature is hardly transmitted, there is a problem in the effective use of heat, and there is a problem in that it is difficult to obtain the effect of heat therapy.

In addition, such a heating tool uses a hydrogel having a lower fluidity than water.
After all, the shape retention is poor, and the feeling of lumpyness, the deviation during use or the shape collapse occurs, so that not only the usability is significantly deteriorated, but also the heat is not transmitted over the entire application site, and the heat is effectively reduced. There is also a problem that it cannot be given.

The inventor of the present invention has made intensive studies to solve the above technical problems. As a result, the cross-linkable water-absorbing polymer is used as the water-absorbing polymer, and the cross-linkable water-absorbing polymer is used as a functional material. By cross-linking and imparting the shape retention property to the hydrogel, the shape retention property of the gel-filled sheet is improved, thereby preventing unevenness or shape collapse during use and significantly improving the feeling of use, It has been found that the heat is transmitted uniformly over the entire application site, and that an excellent thermal effect is exhibited.

In the present invention, in addition to improving the shape retention of the gel-filled sheet as described above, the functional substance may further contain a far-infrared ray emitting substance, or Laminated on one or both sides of the flat bag,
By fixing, a heating effect and a cooling effect can be provided extremely effectively to the application part of the human body and the deep part (inside) of the food, and the feeling of use can be further improved, and the heat can be used. In the human body, blood circulation at the application site is promoted to improve metabolism at the application site, and as a result, chronic pain such as low back pain, stiff shoulders, joint pain, neuralgia, rheumatism and the like can be eliminated or alleviated. I got the knowledge.

Further, the inventor of the present invention makes it possible to set the heat radiation temperature of the gel-filled sheet itself to a relatively low temperature, for example, about 40 ° C., by the far-infrared ray effect. It has been found that sufficient thermotherapy can be applied to the deep part of the skin, and therefore, it is possible to prevent skin disorders such as low-temperature burns from occurring and to significantly improve safety. He also gained insight.

On the other hand, the present inventor used a crosslinkable water-absorbing polymer as the water-absorbing polymer, and crosslinked this cross-linkable water-absorbing polymer with a functional substance to give the hydrogel a shape-retaining property. Improves the shape retention of the sheet and maintains the shape of the gel-filled sheet as much as possible even when external pressure is applied. As a result, the gel-filled sheet is prevented from being biased or deformed as much as possible, so that the usability can be significantly improved. The knowledge was obtained.

The present inventor has proposed that acute pain such as bruising or sprain, or sudden fever or headache such as febrile illness,
Cooling is more effective than warming, but in the gel-filled sheet of the present invention, in addition to the use as the heating tool,
They also learned that cooling in a refrigerator or freezer can be used as a so-called chill pad.

At the same time, the present inventor has found that the gel-filled sheet configured as described above can appropriately keep and warm the inside of food and the like provided in delivery services such as delivery and delivery. Conversely, fresh foods such as fish and shellfish can be cooled so that they do not rot, and can serve as a suitable cushioning material for foods, etc., so that foods etc. are not damaged and the commercial value is maintained and improved. It was also found that it could be a food heating tool or a food cooling tool that could do this.

The present invention has been completed on the basis of the above findings, that is, a cross-linkable water-absorbing polymer is used as the water-absorbing polymer, and the cross-linkable water-absorbing polymer is cross-linked with a functional substance. By imparting the shape retention property to the hydrogel, it is possible to improve the shape retention property of the gel-filled sheet, prevent the shape collapse, and improve the feeling of use. By incorporating an infrared radiating substance or laminating and fixing a far infrared radiating substance on one or both sides of a flat bag, the heat effect can be extremely effectively applied to the application site of the human body or the deep part (inside) of food. Gel-filled sheet, which can provide a cooling effect as well as improving the feeling of use, and a temperature and
It is an object to provide a cooling tool, a food heating tool, a cold pad, and a food cooling tool.

[0029]

In order to achieve this object, the gel-filled sheet of the present invention is a gel-filled sheet for imparting a heating effect or a cooling effect to an application site, wherein the gel-filling sheet comprises water, A water-containing gel containing a water-absorbing polymer and a functional substance as essential components is encapsulated in a flat bag, and the functional substance cross-links the crosslinkable water-absorbing polymer to form a water-retaining gel. Is provided.

That is, the gel-filled sheet according to the present invention uses a cross-linkable water-absorbing polymer as the water-absorbing polymer, and the cross-linkable water-absorbing polymer is cross-linked by a functional substance to impart shape retention to the hydrogel. As a result, the shape retention property of the gel-filled sheet is improved, and the shape of the gel-filled sheet is maintained as much as possible even when external pressure is applied. As a result, the unevenness of the hydrogel in the gel-filled sheet and the deformation of the gel-filled sheet are minimized. Therefore, the usability can be remarkably improved, and the heat or cold can be uniformly applied to the entire application site.

In the gel-filled sheet according to the present invention, as described above, the shape-retaining property of the gel-filled sheet is improved, and further, the functional substance contains a far-infrared ray emitting substance, By laminating and fixing the radioactive material on one or both sides of the flat bag, it is possible to extremely effectively provide a heating effect or a cooling effect to the application site of the human body or the deep part (inside) of the food, In addition to improving the feeling of use, this heat promotes blood circulation at the application site in the human body and improves metabolism at the application site, thereby realizing low back pain, stiff shoulders, joint pain, neuralgia, rheumatism. , Etc., can be eliminated or alleviated.

That is, when the gel-filled sheet of the present invention is used as a heating tool, the gel-filled sheet of the present invention is heated in a microwave oven or hot water and then applied to the application site of the human body. Thus, a thermal effect is imparted to the application site, and the heat suitably promotes blood circulation at the application site to improve metabolism at the application site, thereby improving low back pain, stiff shoulders, joint pain, neuralgia, rheumatism. Removes or alleviates chronic pain, etc., or keeps food, etc. provided in delivery services such as on-site delivery, delivery, etc., and prevents them from cooling during delivery of this food, etc., and maintains commercial value・ It can be improved.

On the other hand, when the gel-filled sheet of the present invention is used as a cooling pad, after cooling in a refrigerator or a freezer, it is applied to the application site of the human body to provide a cooling effect to the application site. However, the cold heat reduces swelling and congestion at the application site, alleviates headaches and fever, or cools fresh foods such as seafood and frozen foods provided in delivery services such as home delivery and delivery. In addition, it is possible to prevent these fresh foods from spoiling and maintain and improve the commercial value.

In the present invention, the term “application” refers to the use of the gel-filled sheet of the present invention for the purpose of imparting a heating effect or a cooling effect to an application site of a human body or an object such as food. The object and the method of use are not particularly limited.For example, not only when the object is used by directly crimping it to an application site of a human body or food, etc., but also wrap a cushioning material such as a cloth or a towel. In addition, the case where the gel-filled sheet of the present invention has a far-infrared ray radiating function includes a case where the gel-filled sheet of the present invention has a far-infrared radiation function. Therefore, it is possible to suitably provide a heating effect or a cooling effect to the deep part (inside) of the object. Hereinafter, the present invention will be described in more detail.

As the crosslinkable water-absorbing polymer used in the present invention, mainly water is absorbed smoothly and in a large amount to form a gel, and furthermore, it is chemically crosslinked by a functional substance described later to exhibit and improve the shape retention property. The polymer material is not particularly limited as long as the polymer material is a hydrophilic polymer material having a functional group. Specifically, for example, polyacrylic acid and a salt thereof, acrylic acid Synthetic polymer-based substances such as starch and maleic anhydride copolymer, and semi-synthetic compounds such as carboxymethylcellulose are mentioned. In the present invention, one or more kinds of cross-linkable compounds selected from these are used. These include water-absorbing polymers, and if necessary, they can be treated with a surfactant or a combination of these with a surfactant to improve hydrophilicity. And it is also good.

The surfactant is mainly added to improve the dispersibility of the material. Specifically, for example, higher fatty acid soap, alkyl sulfate, polyoxyethylene alkyl ether sulfate, Anionic surfactants such as acyl N-methyltaurine salt, alkyl ether phosphate salt and N-acyl amino acid salt; cationic surfactants such as alkyltrimethylammonium chloride, dialkyldimethylammonium chloride and benzalkonium chloride; alkyldimethylamino Amphoteric surfactants such as betaine acetate, alkylamide dimethylaminoacetic acid betaine and 2-alkyl-N-hydroxyimidazolimium betaine, polyoxyethylene type and polyhydric alcohol ester type and ethylene oxide / propylene oxide Nonionic surfactant click copolymer, or sorbitan monolaurate and the like of the polymer surfactant, other surfactants such as natural surfactants.

In the present invention, the blending ratio of the crosslinkable water-absorbing polymer in the whole hydrogel is preferably about 1.5 to 17.5% by weight, more preferably about 2 to 15% by weight based on the whole hydrogel. Is more preferable, and especially 2.5 to 1
It is desirably about 3.5% by weight.

In the present invention, if the blending ratio of the crosslinkable water-absorbing polymer in the whole hydrogel is too small, less than 1.5% by weight, the required shape retention and viscosity and the water retention are poor, and the water content of the hydrogel is low. It is not preferable because the gel may be separated from water and the feeling of use may be significantly impaired, or the hydrogel may flow and become unbalanced during use, so that the effect may not be sufficiently exhibited. Exceeding this is not preferred because it is not only too much and wasteful, but also adversely affects production such as the viscosity of the hydrogel increases and the productivity decreases, and it becomes difficult to balance and adjust with other components.

The mixing ratio of the surfactant is as follows:
In order to improve the dispersibility of each component, the content is preferably about 2% by weight or less based on the whole hydrogel, and particularly preferably 0.01 to 1.
About 5% by weight is more preferable, and if it is less than 0.01% by weight, it is difficult to exhibit the required dispersibility. On the other hand, if it exceeds 2% by weight, the effect is too large to limit the dispersibility effect. This is not preferable because it also causes waste.

In the present invention, it is particularly preferable to add a viscosity modifier for the purpose of increasing the amount of the hydrogel or adjusting the viscosity of the gel, and the viscosity modifier is not particularly limited. Specifically, for example, an inorganic mixture such as calcium chloride, ethylene glycol, glycerin, propylene glycol, polyethylene glycol, diethylene glycol, or diethylene glycol monoalkyl ether (an alkyl group having 1 to 3 carbon atoms) [eg, diethylene glycol monomethyl ether Or diethylene glycol monoethyl ether or the like], diethylene glycol dialkyl ether (alkyl group having 1 to 3 carbon atoms) [diethylene glycol dimethyl ether or diethylene glycol diethyl ether or the like], triethylene Recall monoalkyl ether (alkyl group having 1 to 3 carbon atoms) [such as triethylene glycol monomethyl ether or triethylene glycol monoethyl ether], triethylene glycol dialkyl ether (alkyl group having 1 to 3 carbon atoms) [triethylene Glycol dimethyl ether or triethylene glycol diethyl ether, etc.]
1- (O-R2) n-O-CO-R3 (where R1 or R3 is an alkyl group having 1 to 3 carbon atoms, R2 is 1 alkyl group)
Or an organic compound such as a glycol ether acetic acid alkyl ester represented by the formula (2), wherein n is an integer of 1 to 5, especially 1 to 3).

When the gel-filled sheet of the present invention is cooled in a refrigerator or a freezer and used as a hot / cold pad, the viscosity adjusting agent has a function of preventing the cold / hot pad from freezing immediately, that is, containing water. It also functions as a gel antifreeze.

The amount of the viscosity adjusting (thickening) agent varies depending on the cross-linkable water-absorbing polymer used and the amount of water used. % By weight or less, more preferably in the range of 5 to 27.5% by weight.
Most preferred is a range of 7.5 to 25% by weight.

In the present invention, the water content of the water-containing gel containing water, the crosslinkable water-absorbing polymer and the functional substance as essential components depends on the type of the selected crosslinkable water-absorbing polymer and additive, or the water-containing gel. It is appropriately determined according to the fluidity (viscosity) required for the composition, and is not particularly limited, but generally has a water content in the range of 40 to 95% by weight of the entire hydrogel, particularly 60-85% by weight
When the water content is less than 40% by weight of the entire hydrogel, the water content may be too low, resulting in lack of heat storage, heat storage, further heating, warming, heat retention and the like. On the other hand, if the water content exceeds 95% by weight, the shape retention and handleability may deteriorate, which is not preferable.

In the present invention, the functional substance refers to a cross-linkable water-absorbing polymer that is chemically cross-linked to improve the shape retention of the hydrogel, or to physically increase the viscosity of the hydrogel to improve its fluidity. A substance that controls the properties and improves the shape retention of a gel-filled sheet.

Specific examples of the functional substance include kaolin, benite, permiculite, silica powder,
Clay, perlite, zeolite, zinc white, titanium oxide, talc, aluminum chloride, aluminum sulfate, aluminum nitrate, aluminum hydroxide, aluminum magnesium magnesium, aluminum silicate, dried aluminum hydroxide, aluminum oxide, magnesium hydroxide,
Synthetic aluminum silicate, meta-aluminum silicate, titanium silicate, aluminum potassium silicate, aluminum aminoacetic acid, auntin hydroxyaluminum,
Magnesium aluminate metasilicate, Kalyoban,
A crosslinking agent that crosslinks a chemically crosslinkable water-absorbing polymer such as spherical cellulose, tartaric acid, lactic acid, polybutene, polyisobutylene, acetaldehyde, glutaraldehyde, glyoxal, dialdehyde starch, or dimethyl ketone, or a physically improved viscosity to maintain the viscosity. Examples thereof include substances that exhibit a mold function, and these can be used alone or in combination of two or more.

The functional substance is used as a cross-linking agent or a physical thickener for cross-linking the cross-linkable water-absorbing polymer, and controls the viscosity of the hydrogel, improves the shape retention, Various functions are effectively expressed,
From these viewpoints, the mixing ratio is preferably 0.01 to 7.5% by weight or less, more preferably about 0.025 to 5.5% by weight, more preferably about 0.025 to 5.5% by weight, based on the total weight of the hydrogel. Most preferably, it is about 1 to 4.5% by weight.

In the gel-filled sheet according to the present invention, as described above, in addition to the gel-filled sheet having improved shape-retaining property, a functional substance is added to further impart a far-infrared radiation function. Contains far-infrared emitting materials,
Alternatively, a far-infrared radiating substance laminated and fixed on one or both sides of a flat bag provides a very effective heating and cooling effect to the application site of the human body and the deep part (inside) of the food. And these can be used alone or in combination of one or more.

And, as the far-infrared radiation material,
There is no particular limitation as long as the substance emits far-infrared rays.Examples of this far-infrared ray emitting substance include those that emit far-infrared wavelengths, such as far-infrared radiation ceramics that emit far-infrared rays. .

The far-infrared radiation ceramics include non-metallic inorganic solids.
At least one selected from metal oxides, carbides, nitrides, and carbonates can be appropriately selected and used.

The metal is not particularly limited. For example, Al, Be, V, Fe, Y, Co,
Cu, Ni, Si, Sn, Ti, Cr, Ce, Zr, C
a, Ta and Nb.

In the present invention, as described above, the hydrogel may contain and disperse the far-infrared ray radiating substance. In this case, when blending the far-infrared radiating substance (B) with the hydrogel (A), the blending ratio of (A) and (B) is selected from the types of (A) and (B) selected. Further, it is appropriately determined according to the required functions and applications, and is not particularly limited,
In general, it is preferable to adjust (B) to a range of 5 to 70 parts by weight, more preferably 7.5 to 50 parts by weight, especially 10 to 40 parts by weight, based on 100 parts by weight of the (A). A part by weight is more preferred.

If the content of the far-infrared ray radiating substance is less than 5 parts by weight with respect to 100 parts by weight of the hydrogel, it is not preferable because the amount of the far-infrared ray emitting substance is too small to exert a sufficient far-infrared ray function. Not only is it excessive and wasted, but also the heat generation function of the gel-filled sheet may be impaired, or the gel-filled sheet may become too hard, impairing the feeling of use.

Further, in the present invention, the far-infrared radiating substance may be laminated and fixed on one or both sides of the flat bag. In this case, the far-infrared radiating substance is dispersed in a paint or a hot-melt adhesive. It may be coated, dried, printed or transferred, or cast-coated, or the like, and laminated on one or both sides of the flat bag. In this case, the blending ratio of the paint (C) and the far-infrared radiating substance (B) is in the range of 5 to 50 parts by weight of (B) based on 100 parts by weight of (C) (solid content), preferably. It is desirable that the content be in the range of 10 to 40 parts by weight, particularly 15 to 35 parts by weight, and the mixing ratio of the hot-melt adhesive (D) and the far-infrared ray radiating substance (B) is (D) It is desirable that (B) is in the range of 5 to 50 parts by weight, preferably in the range of 10 to 40 parts by weight, particularly preferably in the range of 15 to 35 parts by weight, per 100 parts by weight.

Each of the above (C) and (D) is 100
When (B) is less than 5 parts by weight with respect to parts by weight,
If the amount is too small, it is not preferable because a sufficient far-infrared ray function cannot be exhibited. On the other hand, if it exceeds 50 parts by weight, it becomes excessive and wasteful, and the heat generation function of the gel-filled sheet is damaged or hardened. On the contrary, it is not preferable because the feeling of use may be adversely affected.

Further, in the present invention, a sublimable drug or a drug such as peppermint oil, menthol, methyl paraoxybenzoate or butyl paraoxybenzoate is used in an amount of 5% by weight or less, especially 0.025 to 3% by weight, based on the hydrogel. % May be mixed.

In addition, in the present invention, if desired,
Antioxidants and stabilizers may be appropriately blended to improve or improve the quality of the hydrogel, or a dye or pigment may be further blended to color the hydrogel to a desired color. The configuration may be such that the grades can be identified.

The gel-filled sheet used in the present invention is formed by enclosing the hydrogel in a flat bag. The sheet material forming the flat bag is flexible and durable. There is no particular limitation as long as the hydrogel that has been enclosed does not leak due to breakage or the like during use, and a polymer material conventionally used for an airtight packaging material can be suitably used. Specifically, for example, polyethylene, polypropylene, polyamide (nylon), polyester, polyvinyl chloride, polyvinylidene chloride, polyurethane, polystyrene, saponified ethylene-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, Natural rubber, recycled rubber, synthetic rubber and the like can be suitably used.

Further, the film material or sheet material forming the flat bag may be a laminate of two or more layers depending on the purpose. It is preferable to select a material that can be heat-sealed. In this case, when two or more resin layers cannot be heat-sealed, these resin layers may be joined with a hot-melt adhesive film interposed therebetween.

The thickness of the film material or sheet material varies greatly depending on the intended use and the type of the material or the hydrogel, and is not particularly limited.
Specifically, it is generally preferable that the basis weight be in the range of about ²⁰ to 350 g / m ² .

If the thickness of the film material or sheet material is less than 20 g / m ^{2 in} basis weight, the required mechanical strength cannot be obtained, and it may be difficult to make the thickness uniform. And the quality may not be stable, which is not preferable.

On the other hand, when the basis weight of the film material or the sheet material exceeds 350 g / m ² , the flexibility is reduced, the conformability to the body surface is significantly reduced, and the followability to deformation and movement of the body surface is reduced. It is not preferable because it lowers the hardness and makes the feeling worse.

Therefore, the basis weight of the film material or sheet material is preferably in the range of 25 to 250 g / m ² , particularly preferably in the range of 30 to 200 g / m ^2. It is desirable because required mechanical strength and excellent flexibility can be obtained.

The shape of the flat bag is not particularly limited. When the gel-filled sheet is finally made into a product, it is not particularly limited as long as it does not give an extremely uncomfortable feeling to the user. In general, a rectangular or substantially rectangular shape is preferable, and other shapes such as a square, a substantially square, an elliptical shape, a substantially elliptical shape, a circular shape, a substantially circular shape, or a dumbbell shape are also preferable. Can be used.

In the present invention, in forming the gel-filled sheet, the thickness of the gel-filled sheet is appropriately selected according to the object to be used, and is not particularly limited. When applied to a site, it is desirable to form the gel-filled sheet so that the thickness is in the range of 5 to 35 mm.

The reason for this is that if the thickness of the gel-filled sheet exceeds 35 mm, not only the required amount of hydrogel and the like is increased and the cost is increased, but also the weight becomes heavy and the handleability is reduced, and the gel becomes too thick. On the other hand, if it is less than 5 mm, the amount of hydrogel becomes too small, and the thermal effect becomes poor, so that sufficient thermal therapy effect can be obtained. It is not preferable because the cooling effect becomes poor or the cooling effect of the food becomes insufficient and the cooling effect of the food cannot be sufficiently obtained. Therefore, from these viewpoints, the thickness of the gel-filled sheet of the present invention is preferably in the range of 8 to 25 mm.

In the present invention, the thickness of the gel-filled sheet is defined as the thickness of the gel-filled sheet when the hydrated gel is sealed in a flat bag, and the gel-filled sheet is leveled without unnatural bias. Means the thickness of

In the gel-filled sheet of the present invention, by adopting such a constitution, the gel-filled sheet is applied to the application site of the human body, and imparts a heating effect or a cooling effect to the application site. Improving metabolism at the application site by suitably promoting blood circulation, or relieving pain such as bruising or sprains, removing or alleviating fever or headache by cold heat, or delivery, delivery, etc. It is possible to prevent foods provided in the delivery service etc. from being heated and kept warm, and to prevent fish and shellfish and frozen foods from being putrefied by cooling, and to maintain and improve the commercial value. It can be a gel-filled sheet with significantly improved handling, economy and safety.

That is, when the gel-filled sheet of the present invention is heated in a microwave oven, hot water, or the like and applied to an application site of a human body, a heat effect is imparted to the application site,
Low back pain by suitably promoting the blood circulation of the application site by this heat and improving the metabolism of the application site,
It can be a heating device for removing or alleviating chronic pain such as stiff shoulders, joint pain, neuralgia, rheumatism and the like.

That is, in the present invention, the use of a functional substance that imparts a shape-retaining property to the hydrated gel can be used to prevent mold collapse and the like, thereby improving the feeling of use. As a result, hyperthermia can be applied to the deep part of the affected area, and as a result, a hyperthermia treatment tool having a very high therapeutic effect can be obtained. In addition, when the temperature of the heating tool is relatively low at about 40 ° C. Even so,
The far infrared rays are sufficiently radiated, and an effective hyperthermia treatment can be performed on the affected part, so that it can be a very safe hyperthermia treatment device that does not cause a low-temperature burn.

On the other hand, when the gel-filled sheet of the present invention is cooled in a refrigerator or a freezer and applied to an application site of a human body, a cooling effect is imparted to the application site, and crushing is performed by the cold heat. It can be a cold pad that relieves swelling and pain such as acute pain such as sprains and sprains, and also suitably relieves and eliminates headaches and fever.

That is, in the gel-filled sheet of the present invention, as described above, the use of the gel-filled sheet can be prevented and the feeling of use can be improved, and the cooling effect can be applied to the deep part of the affected area. It can be a highly effective cold and hot pad, and since the hydrogel does not freeze quickly, there is no rugged pain during use, and the thermal conductivity of the hydrogel is relatively slow, causing frostbite. It can be a very safe refrigeration pad that is unlikely to occur.

When the gel-filled sheet of the present invention is heated in a microwave oven or hot water and applied to foods and the like provided in delivery services such as delivery and delivery, the foods and the like are used. The inside is suitably warmed and kept warm to prevent this food etc. from cooling during delivery,
It can be a food heating tool that can maintain and improve commercial value.

That is, in the gel-filled sheet according to the present invention, as described above, the shape and the like are prevented from being improved to improve the feeling of use and handleability, and the food or the like is suitably heated and kept warm to the inside. It can be a food heating device that can prevent the product from cooling during delivery and maintain and improve the commercial value.

In particular, in this case, in the gel-filled sheet of the present invention, the gel-filled sheet also serves as a cushion material during delivery of the food or the like, so that the food or the like is not damaged, and the food or the like is not damaged. Can be safely delivered without deteriorating the commercial value of the product.

As described above, foods and the like to be heated and kept warm are not particularly limited, but generally include foods and the like provided in delivery services such as home delivery and delivery. Specifically, at least one selected from pizza, ramen, octopus grilled, okonomiyaki, bowls, udon, soba or bento can be mentioned.

On the other hand, when the gel-filled sheet of the present invention is cooled in a refrigerator or a freezer, and is applied to foods and the like provided in delivery services such as home delivery and delivery, the foods and the like are placed inside. Thus, the food or the like can be prevented from deteriorating or decaying during delivery, and can be a food cooling / heating device capable of maintaining and improving the commercial value.

In particular, when the gel-filled sheet of the present invention is used as a food cooling device, the gel-filled sheet also serves as a cushion material during the delivery of the food or the like, and as a result, It is also possible to safely deliver food and other products without losing their value.

As described above, as foods to be cooled,
Although not particularly limited, it is generally intended for foods that melt, rot, or decay at room temperature, and specifically, fish, shellfish, meat, vegetables, fruits, frozen foods and the like. At least one selected from food, ice cream, and the like can be given.

In the present invention, the surface of the flat bag is knitted, woven, or woven for the purpose of improving the feeling of use and feeling, or reinforcing the film material or sheet material forming the flat bag. Preferably, a non-woven fabric is laminated.

As the knit, woven or non-woven fabric, for example, nylon, vinylon, polyester, rayon,
It can be formed using one or more materials selected from artificial fibers such as acetate, acrylic, polyethylene, polypropylene and polyvinyl chloride and natural fibers such as cotton, hemp and silk.

In the gel-filled sheet of the present invention,
For the purpose of extending the use time of the gel-filled sheet, it is particularly preferable to provide a heat insulating material on at least one surface of the flat bag.

By the way, in the conventional gel-filled sheet, for example, the outer surface of the flat bag (the surface opposite to the side used)
By providing a heat insulating material, the usable time can be extended.

As described above, since the gel-filled sheet of the present invention has a far-infrared radiation function as described above, it can be applied not only to the surface portion but also to the deep portion (inside) of the object. In a state where the effect of imparting a sufficient heating effect or cooling effect is maintained, the use time can be extended.

The heat-insulating material in the gel-filled sheet of the present invention controls the heat radiation of the gel-filled sheet,
There is no particular limitation as long as the use time of the gel-filled sheet is prolonged, and specifically, for example, a foamed synthetic resin such as a styrene foam resin, a sponge, a nonwoven fabric, a woven fabric, a knitted or paper, or a laminate thereof the film·
At least one selected from sheets can be suitably used.

In this case, it is desirable that the heat insulating material is configured to be detachable from the flat bag body in order to improve the ease of handling, the feeling of use, and the thermal effect.

In the gel-filled sheet of the present invention, the heating device, the food heating device, the cooling pad, and the food cooling device are configured so as to be removably inserted into a storage bag such as a heat insulating cover or a safety cover as required. However, since it is possible to improve the heat retention, the heat insulation and the safety, it is desirable.

[0087]

The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples.

Example 1 (a) Hydrous gel in which a functional substance was dispersed and blended 2.0 parts by weight of sodium carboxymethylcellulose and 0.5 part by weight of sodium polyacrylate were used as a cross-linkable water-absorbing polymer. To 15.0 parts by weight of glycerin as a thickener and 0.2 parts by weight of sorbitan monolaurate as a surfactant, 0.003 parts by weight of a dry aluminum hydroxide gel as a functional substance, and 2 parts of titanium silicate After adding 3.0 parts by weight of kaolin and 13.0 parts by weight of kaolin, water was added thereto, and the whole was adjusted to 100 parts by weight and sufficiently kneaded to obtain a hydrogel in which the functional substance was dispersed and blended. . (B) Bag body A rectangular (non-porous) polyethylene film (thickness: 100 μm) and a laminated (laminated) film made of rayon non-woven fabric (thickness: 25 μm), which are 40 cm long and 30 cm wide, are overlapped with each other. Two sheets were superposed and the three peripheral edges thereof were heat-sealed by heat sealing to obtain a non-breathable and air-tight bag. (C) Gel-filled sheet 450 g of the hydrated gel in which the functional substance obtained in the above (a) is dispersed and blended is poured into the bag of (b) while bleeding air, and the inlet is heat-melted. The gel-filled sheet of the present invention was obtained by wearing and sealing.

That is, when heated with a microwave oven or the like, this gel-filled sheet can be used as a heating tool or the like capable of suitably imparting a heating effect to the application site. When it is cooled in a refrigerator or a freezer, it can be used as a cooling pad or the like that can suitably provide a cooling effect to the application site.

Example 2 (d) Water-containing gel in which a functional substance is dispersed and mixed The water-containing gel of the above (a) was used, and 100 parts by weight of the water-containing gel was mixed with 7.5 parts of zirconium oxide as a far-infrared ray radiating substance.
Parts by weight and 2.5 parts by weight of vermiculite were dispersed and mixed to obtain a hydrogel in which a far-infrared ray emitting substance was dispersed and blended. (E) Bag body A rectangular (non-porous) polyethylene film (thickness: 100 μm) and a laminated (laminated) film of non-woven rayon (thickness: 25 μm), which is a rectangle having a length of 40 cm and a width of 30 cm, are overlapped with each other. And the three peripheral edges thereof are heat-sealed by heat sealing to form a non-breathable and air-tight bag (30c).
mx 40 cm). (F) Gel-filled sheet 450 g of the hydrogel obtained in the above (d) is thrown in from the inlet of the bag of the above (e) while bleeding air, and these inlets are thermally fused and sealed. Thereby, a gel-filled sheet of the present invention was obtained.

That is, when the gel-filled sheet is heated in a microwave oven or the like, it can be used as a heating tool or the like capable of suitably imparting a heating effect to the application site. When it is cooled in a refrigerator or a freezer, it can be used as a cooling pad or the like that can suitably provide a cooling effect to the application site.

Example 3 (g) Water-containing gel dispersed and blended with a functional substance 0.5 parts by weight of sodium carboxymethylcellulose as a cross-linkable water-absorbing polymer, starch acrylate (trade name: Sanwet, manufactured by Sanyo Chemical Co., Ltd.) 1.5 Parts by weight and 3.0 parts by weight of sodium polyacrylate, to which 23.0 parts by weight of glycerin as a thickener and 0.03 parts by weight of propylene glycol were added, and further, dry water was used as a functional substance. 0.25 parts by weight of aluminum oxide gel, 0.02 parts by weight of magnesium aluminate metasilicate, 0.5 parts by weight of tartaric acid, 0.5 parts by weight of titanium oxide, 1.5 parts by weight of kaolin, and methyl paraoxybenzoate 0 as a drug 0.03 parts by weight and 0.03 parts by weight of methyl paraoxybenzoate were added, and 69.14 parts by weight of water was added thereto. By sufficiently kneaded what was, functional material to obtain a water-containing gel that is dispersed therein.

In Example 1, instead of using the hydrogel in which the functional substance (a) was dispersed and blended, 450 g of the hydrogel in which the functional substance (g) was dispersed and blended was used.
The hydrogel was sealed in a bag in the same manner as in Example 1 except that the gel was charged, to obtain a gel-filled sheet in which a functional substance was dispersed and mixed.

That is, when the gel-filled sheet is heated in a microwave oven or the like, it can be used as a heating tool or the like capable of suitably imparting a heating effect to the application site. When it is cooled in a refrigerator or a freezer, it can be used as a cooling pad or the like that can suitably provide a cooling effect to the application site.

COMPARATIVE EXAMPLE The procedure of Example 1 was repeated except that 450 g of the hydrogel of (d) in Example 2 was used instead of using the hydrogel in which the functional substance (a) was dispersed and blended. In the same manner as in Example 1, a hydrogel was sealed in a bag to obtain a conventional gel-filled sheet containing no functional substance.

Comparative Test Each of the gel-filled sheets of Examples 1 to 3 and Comparative Example was subjected to 50
Heated in a 0 W microwave for 1 minute (and therefore 4 types) and heated for 2 minutes (and thus 4 types), ie
Subject (paneler) with a total of 8 heating tools for each sample
Five people actually used it.

The surface temperature of each heating tool at the start of the test was 39 to 4 for those heated for 1 minute in a microwave oven.
2 ° C., while heated for 2 minutes.
5 ° C. Also, subjects suffer from chronic stiff shoulders,
An adult male of approximately 25 to 33 years old having approximately the same physique (height: 170 cm, weight: about 65 kg), wrapped each heating tool with a towel, and then used it by pressing it on the shoulder every night at bedtime.

After the test, a questionnaire survey was conducted on five test subjects regarding the feeling of use of each heating tool.
In all of the heating tools of the ones heated in a microwave oven for one minute and those heated in a microwave oven for two minutes, all the five persons acknowledged reduction of stiff shoulders when getting up. While all of the persons admit that the reduction of shoulder stiffness was remarkable, in the case of the comparative example, only one out of five persons heated for 1 minute showed no reduction in stiffness at the time of getting up, and was heated for 2 minutes. Only two out of five people showed a reduction in stiff shoulders when waking up.

From the above, it was confirmed that when the gel-filled sheet of the present invention was used as a heating device, it was very effective in treating chronic pain caused by poor blood circulation such as stiff shoulders. It was confirmed that, even when used at a relatively low temperature of about 40 ° C. due to the effect of far-infrared rays, the effect of hyperthermia could be sufficiently obtained. It was recognized that it was highly likely.

The heating tools of Examples 1 to 3 have a restoring force when pressed. In particular, the heating tool of Example 3 has a large restoring force, and was used as a cushion for five subjects. 5
Both people complained that the filling was curved according to the shape of the buttocks, and that heat was transmitted evenly over the entire surface of the buttocks, resulting in an extremely excellent heating effect.

In particular, the heating tools of Examples 1 to 3, particularly the heating tool of Example 3, have a large restoring force.
Since it can be used as it is, it was recognized that it was easy to use.

On the other hand, the comparative example had poor restoring power, and was used as a cushion for five subjects.
In both people, the filling moves to the side due to the pressure of the buttocks, there is no filling below the buttocks, and the heat does not spread to the entire surface of the buttocks, resulting in the required heating effect Complained that he did not.

Further, since the heating tools of Examples 1 to 3, particularly the heating tool of Example 3, have a large restoring force, even if they are used by being wrapped around the waist, the filler does not flow down to the lower part so much. It was recognized that an excellent thermal effect was imparted on the entire waist area on average.

On the other hand, when the heating tool of the comparative example was used by wrapping it around the waist, the filling material flowed down and as a result,
It was recognized that the required thermal effect could not be imparted to the waist.

[0105]

The gel-filled sheet of the present invention has the above-mentioned structure, and the functional substance crosslinks the crosslinkable water-absorbing polymer to significantly improve the shape retention of the hydrogel. As a result of preventing mold collapse as much as possible, the unevenness of the hydrogel during use and the collapse of the mold are prevented, and the feeling of use is remarkably improved.In addition, the shape of the gel-filled sheet is maintained even when pressure is applied, and hot or cold heat is applied. Is transmitted evenly over the entire application site, so that an extremely excellent heating effect or cooling effect is exhibited, and further, the feeling of use can be significantly improved.

In the gel-filled sheet of the present invention,
As described above, the shape-retaining property of the gel-filled sheet is improved, but in addition, the functional substance contains a far-infrared ray emitting substance, or the far-infrared ray emitting substance is coated on one or both sides of a flat bag. By laminating and fixing the heat treatment, it is possible to extremely effectively impart a heating effect to the application site of the human body and the deep part (inside) of the food, and it is possible to further improve the feeling of use and to further enhance the heat In the human body, it is possible to remove or alleviate chronic pain such as low back pain, stiff shoulders, joint pain, neuralgia, rheumatism, etc. by promoting blood circulation at the application site and improving metabolism at the application site. The effect is achieved.

Further, in the gel-filled sheet of the present invention,
When applying this gel-filled sheet to acute pain such as bruising or sprain, or sudden fever or headache such as febrile illness,
It is more effective to cool than warm, but by cooling the gel-filled sheet of the present invention in a refrigerator or a freezer,
Relieves swelling and pain of acute pain such as bruising and sprains,
This has the effect of providing a highly safe cold / heat pad for suitably mitigating and eliminating headaches and fever.

That is, in the gel-filled sheet according to the present invention, a cross-linkable water-absorbing polymer is used as the water-absorbing polymer, and the cross-linkable water-absorbing polymer is crosslinked by a functional substance to impart shape retention to the hydrogel. Thereby, the shape retention of the gel-filled sheet is improved, and the shape of the gel-filled sheet is maintained as much as possible even when external pressure is applied. As a result, the deviation of the hydrogel in the gel-filled sheet and the deformation of the gel-filled sheet are minimized. This prevents the feeling of use from being remarkably improved, and provides an effect that uniform heating or cooling can be applied to the entire application site.

In the gel-filled sheet of the present invention, when the gel-filled sheet configured as described above is applied to foods and the like provided in delivery services such as home delivery, delivery, etc., it is preferable that the inside of the gel-filled sheet be properly filled. In addition to keeping warm, warming, or conversely cooling fresh food such as seafood etc. so that it does not rot, it can be a suitable cushioning material for food etc., without damaging food etc.,
This has the effect of being a food heating tool or food cooling tool that can maintain and improve the commercial value.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09K 5/00 101 C09K 5/00 101 // A23L 3/005 A23L 3/005 3/36 3/36 Z F-term (Reference) 4B021 LP04 LP06 LW01 LW09 MC10 MP10 4B022 LA05 LA06 LF12 LT10 4C082 PA01 PC04 PC09 PG02 PG03 PJ12 4C099 AA05 CA03 CA07 CA09 CA11 EA08 GA02 HA05 JA04 LA07 LA14 LA16 TA02

Claims (18)

[Claims] 1. A flat hydrogel containing water, a cross-linkable water-absorbing polymer and a functional substance as essential components is enclosed in a flat bag, and the functional substance cross-links the cross-linkable water-absorbing polymer. A gel-filled sheet obtained by imparting shape retention to the hydrogel. 2. The water-containing gel has a water content of 40 to 95 of the entire hydrogel.
The gel-filled sheet according to claim 1, which is in weight%. 3. The functional substance is kaolin, benite,
Permiculite, silica powder, clay, perlite, zeolite, zinc white, titanium oxide, talc, aluminum chloride, aluminum sulfate, aluminum nitrate, aluminum hydroxide, dried aluminum hydroxide, aluminum magnesium hydroxide, aluminum oxide, magnesium hydroxide, silica Aluminum silicate, synthetic aluminum silicate,
Aluminum metasilicate, Titanium silicate, Aluminum potassium silicate, Aluminum aminoacetic acid, Outin hydroxyaluminum, Magnesium aluminate metasilicate, Kalyovan, Spherical cellulose, Polybutene, Polyisobutylene, Acetaldehyde, Glutaraldehyde, Glyoxal, Dialdehyde starch or The gel-filled sheet according to claim 1, wherein the sheet is at least one selected from dimethyl ketone. 4. The gel-filled sheet according to claim 1, wherein the functional substance contains a far-infrared radiating substance. 5. The gel-filled sheet according to claim 1, wherein the far-infrared radiating substance is laminated and fixed on one or both sides of the flat bag. 6. The gel-filled sheet according to claim 4, wherein the far-infrared radiating substance is a far-infrared radiating ceramic. 7. The gel-filled sheet according to claim 4, wherein the far-infrared-emitting ceramic is at least one selected from metal oxides, carbides, nitrides, and carbonates. 8. The method according to claim 1, wherein the metal is Al, Be, V, Fe, Y, C
o, Cu, Ni, Si, Sn, Ti, Cr, Ce, Z
The gel-filled sheet according to claim 7, which is at least one or more selected from r, Ca, Ta, and Nb. 9. The gel-filled sheet according to claim 1, wherein a knitted fabric, a woven fabric or a nonwoven fabric is laminated on at least one side surface of the flat bag body. 10. The flat bag body according to claim 1, wherein a heat insulating material is provided on at least one surface of the flat bag body.
The gel-filled sheet according to the above item. 11. The gel-filled sheet according to claim 10, wherein the heat insulating material is detachably provided to the flat bag. 12. The heat insulating material is at least one selected from a foamed synthetic resin such as a styrofoam resin, a sponge, a nonwoven fabric, a woven fabric, a knitted fabric, and a paper.
The gel-filled sheet according to 1. 13. A heating / cooling tool, wherein the gel-filled sheet according to any one of claims 1 to 12 imparts a heating effect or a cooling effect to an application site of a human body. . 14. A food heating device, wherein the gel-filled sheet according to any one of claims 1 to 12 imparts a heating effect to food. 15. The food heating appliance according to claim 14, wherein the food is at least one selected from pizza, ramen, octopus grilled, okonomiyaki, rice bowl, udon, soba, and lunch. 16. A cooling / heating pad, wherein the gel-filled sheet according to any one of claims 1 to 12 imparts a cooling effect to an application site of a human body. 17. A food cooling device, wherein the gel-filled sheet according to any one of claims 1 to 12 imparts a cooling effect to food. 18. The food cooling tool according to claim 17, wherein the food is at least one selected from seafood, meat, vegetables, fruits, and frozen foods.