JP3057457U - Gel laminate for cool / humidity retention and adhesive for cold / humidity retention - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a gel for cooling and moisturizing having an improved cooling ability, and a cooling body and a laminate thereof, and a cooling and moisturizing, in which the duration of the cooling and moisturizing action can be appropriately adjusted. To provide an adhesive material for use. SOLUTION: A fiber group (f) having at least a surface having hydrophilicity is dispersed and held in a water-retentive base material (a1) composed of a water-soluble polymer containing 50% by weight or more of water. Part (f) is configured to be exposed on the surface of the water-retentive base material (a1), thereby increasing the amount of water retention and increasing the water diffusion rate. In addition, the gel composition or the fiber group may be loaded with a compound that is endothermicly dissolved in water to further increase the cooling ability. These gels can be used as they are, or can be formed into a laminate through an appropriate net-like sheet material, or can be provided as a patch by holding them on a gas-permeable support.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 TECHNICAL FIELD The present invention relates to a gel for cooling and moisture retention, a laminate thereof, and a patch for cooling and moisture retention.

[0002]

[Prior art]

 For example, instead of ice sacs and ice pillows against heat generated by the human body, as a cold insulating material with excellent portability and sticking properties, a cold insulating and moisturizing adhesive material in which a gel made of a water-soluble polymer and sodium chloride is provided on a support is used. Are known.

[0003] By the way, in such a cold / humidity adhesive material, when priority is given to portability, the amount of the gel body held on the support is limited, and accordingly, the water retention amount is also limited. Therefore, the duration of the cooling / humidifying action must be shortened.

[0004]

[Problems to be solved by the invention]

 An object of the present invention is to provide a cooling / humidifying gel, a laminate thereof, and a cooling / humidifying adhesive material which can appropriately adjust the duration of the cooling / humidifying action and have improved cooling ability. .

[0005]

[Means for Solving the Problems]

 Thus, according to claim 1 of the present application, "a water-retentive matrix composed of a water-soluble polymer, and a fiber group (f) dispersed and held in the water-retentive matrix, Contains 50% by weight or more of water, and the fiber group (f) has a hydrophilicity at least on its surface and a part of the gel is used so as to be exposed on the surface of the water-retentive base material. (A1)] is provided as the first device of the present application.

In addition, the present invention provides a cooling / humidifying gel laminate (A2) obtained by laminating the cooling / humidifying gel (A1) of the first invention in multiple layers via a mesh sheet (n1) as a second invention of the present application. It can also be provided.

[0007] Further, the present invention provides the cooling / humidifying gel (A1) according to the first invention or the cooling / humidifying gel laminate (A2) according to the second invention on a breathable sheet support (1). The cold / humidity adhesive material (B1) constituted by holding the same can be provided as the third invention of the present application.

The cooling / humidifying gel (A1) of the first invention of the present application is a group of fibers having at least a surface having hydrophilicity in a water-retaining matrix made of a water-soluble polymer containing 50% by weight or more of water. Since f) is dispersed, the water contained in the water-retentive base material can easily move in the base material through the hydrophilic surface of the fiber group (f), and the fiber group (f) Since a part is exposed on the surface of the water-retentive base material, moisture is easily diffused from this part. Accordingly, the rate of water diffusion from the water-retentive base material increases, and the cooling capacity increases.

Further, the fiber group (f) dispersed in the water-retentive base material has a good affinity for the base material due to the hydrophilicity of its surface, and acts as a reinforcing material, thereby providing a large amount of water-retentivity. The base material is maintained in shape without breaking. Therefore, the amount of the water retention base material can be increased while maintaining the shape, and the water retention amount can be increased to maintain the cooling / humidifying action.

In the gel laminate (A2) of the second invention of the present application, since the gel layers (a2) and (a3) are laminated in multiple layers via the mesh sheet material (n1), the number of layers is adjusted. It is possible to adjust the amount of water retention and the rate of water release as the whole gel laminate (A2), and thus to adjust the cooling / humidifying action time.

Further, in the gel laminate (A2) of the second invention of the present application, by laminating a gel for heat retention / moisture retention and an endothermic gel, the start of the endothermic reaction and the elapsed time and speed thereof can be adjusted. Become.

[0013] The adhesive (B1) for cooling and moisturizing according to the third invention of the present application is such that the gel (A1) according to the first invention or the gel laminate (A2) according to the second invention is provided on the air-permeable sheet support (1). Since it is retained, a patch material having excellent cooling ability and having a long cooling / humidifying action time can be obtained.

[0013]

[Embodiment of the invention]

 The fiber group (f) used in the first invention of the present application only needs to have a hydrophilic surface at least. For example, in addition to pulp, cotton yarn, rayon and other various hydrophilic resin fibers, the surface is hydrophilic. Examples include, but are not limited to, various types of treated hydrophobic resin fibers, glass fibers, and ceramic fibers. Further, the fiber group is dispersed and held in the water-retentive base material. In this case, it is preferable that the fiber group is dispersed so as to be intertwined three-dimensionally. It is preferably used in a slurry state.

When the fiber group (f) is dispersed and held in a water-retentive base material in a state of being pre-hydrated as described in claim 2 of the present application, the gel group finally obtained is held by the fiber group. This is a preferable mode because the water content to be added is added excessively, and the effect of cooling and moisturizing can be further enhanced.

The water-retentive matrix used in the first invention of the present application includes polyacrylic acid and salts thereof, gelatin, polyvinyl alcohol, sodium carboxymethylcellulose, carrageenan, sodium alginate, carboxylate, as described in claim 6 of the present application. Examples include water-soluble polymers such as vinyl polymers. These water-soluble polymers may be used alone, but it is preferable to use a mixture of several types from the viewpoint of cooling, moisture retention, adhesive strength, and the like. For example, as described in claim 7 of the present application, And a mixture composed of a water-soluble polymer consisting of “a mixture of polyacrylic acid and sodium polyacrylate, polyvinyl alcohol, gelatin, and carrageenan”. However, it is not limited to this.

In the gel of the first invention of the present application, when the water-soluble polymer is composed of a mixture of polyacrylic acid and sodium polyacrylate, polyvinyl alcohol, gelatin, and carrageenan, for example, for gelatin and carrageenan, Polyvinyl alcohol, polyacrylic acid and sodium polyacrylate are blended in a ratio (weight ratio) of 1: 1 to 1: 5, and are selected so that the total amount is 0.1 to 25% by weight. % By weight, more preferably 1 to 10% by weight, and most preferably 2 to 8% by weight. At this time, it is preferable that polyacrylic acid and sodium polyacrylate are blended in a ratio (weight ratio) of 1: 0.5 to 1:20 with respect to polyvinyl alcohol.

If the water-retentive base material contains a compound that is endothermically soluble in water as described in claim 3 of the present application, an endothermic reaction occurs in the gel finally obtained. This is preferable in that the cooling effect is further enhanced.

The compound that is endothermicly soluble in water may be contained in a solid state or in a solution state. The former is preferable from the viewpoint of sustainability of the former.

The compound contained in the water-retentive matrix may be contained in a water-soluble polymer constituting the water-retentive matrix, and is described in claim 4 of the present application. As described above, the material may be dispersed and held in the water-retentive base material while being “supported by the fiber group”, or may be a combination of these conditions.

Examples of the compound that can be dissolved endothermically in water include sodium chloride, urea, and sodium nitrate as described in claim 5 of the present application. These may be used alone or as a mixture of two or more.

The above compound is used in a proportion of 0.1 to 25% by weight of the water-retentive base material, preferably 0.5 to 20% by weight, more preferably 2 to 8% by weight.

In the above water-retentive base material, the pH is usually adjusted to a range of 4 to 10, preferably 5 to 9, and if it is 6 to 8, the cooling sensation of the skin and the exhilaration after exfoliation are obtained. It is better in terms of gain.

[0023] As described in claim 8 of the present application, it is preferable that "lower alcohol" is added to the water-retentive base material in order to promote the evaporation of water and enhance the cooling / cooling effect. No. The lower alcohol includes, for example, methyl alcohol, ethyl alcohol, propyl alcohol, etc., but is not limited thereto, as long as it can be uniformly mixed with water and azeotropes at a temperature lower than the boiling point of water. It is preferably used. Further, a known humectant such as glycerin or polyethylene glycol may be appropriately mixed in the water-retentive base material.

The water-retentive base material is convenient to handle, as described in claim 9 of the present application, as “a liner (p) is attached to at least one exposed surface of the water-retentive base material”. This is the preferred mode.

In the second invention of the present application, the net-like sheet (n1) used for the gel laminate (A2) may be any one as long as the gel (A1) of the first invention of the present invention can be adhered and attached to both surfaces thereof. The reticulated sheet (n1) itself preferably has water retention and water permeability. As such a sheet material (n1), for example, a sheet material made of paper or cloth, or a relatively coarse nonwoven sheet material made of a resin fiber having hydrophilicity or water absorbability is preferable. But are not particularly limited to these.

[0026] Of the mesh sheet material (n1), those made of resin fibers have been subjected to a chemical surface treatment or a physical surface treatment so as to exhibit an anchoring effect on the water-retentive base material. The gel layers (a2) and (a3) can be firmly bonded and engaged on both sides of the sheet material (n1), which is preferable for laminating the gel in multiple layers.

The chemical treatment includes, for example, imparting hydrophilicity to the resin fiber surface using an appropriate surfactant. When such a chemical surface treatment is performed, it is preferable that the water retention and water permeability of the sheet material itself are not impaired. Examples of the physical treatment include, for example, applying a needling or the like to a net-like sheet material to make it fluff.

When the net-like sealing material is used after being hydrated as described in claim 12 of the present application, the amount of water carried by the net-like sheet material is added as a water retention amount of the entire gel layer, and the total water content is reduced. It is preferable because it can increase the amount to contribute to the maintenance of cooling and moisturizing effects.

Further, as described in claim 12 of the present application, when the above-mentioned net-like sheet material is used by supporting a compound that is endothermically soluble in water, an endothermic reaction is caused between the gel layers to further increase the temperature. This is a preferred embodiment in that a cooling effect can be obtained. As the compound, the same compound as described above is similarly used.

In the third invention of the present application, the air-permeable sheet support (1) used for the patch (B1) may be any material as long as it is composed of a material having air permeability. Examples of the material include cloth, non-woven fabric, reticulated resin sheet, and foamable resin sheet having open cells.

Preferred examples of such a breathable sheet support (1) include those formed of a flexible polyurethane foam having open cells. This flexible polyurethane foam has sufficient extensibility and the restoring force due to elongation is reduced, and almost no load is applied to the object to be applied, regardless of the uneven surface. It can be aligned in a state and sufficiently. In addition, since the printing aptitude is good, characters, trade marks, characters, etc. can be printed clearly as appropriate.

When the air-permeable sheet support is used by supporting an endothermic compound in water as described in claim 17 of the present application, an endothermic reaction is caused in the gel body to further enhance the endothermic reaction. This is a preferred embodiment in that a cooling effect can be obtained.

Examples of uses of the gel for cooling and moisturizing of the present invention, the gel laminate thereof, and the adhesive material holding the gel or the gel laminate include, for example, a medical cooling pad for keeping a human body cool when heat is generated, a fresh fish・ Cooling packaging for cooling and protection of drinking water and alcohol during transportation, cooling sheet to prevent melting when transporting chocolate, pad for muscle cooling after sport and skin care after sunburn, drying Examples include, but are not limited to, protective pads for hydration of sexual skin, anti-inflammatory, and cataplasms further containing an analgesic.

Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.

Example 1 This example is an example of a gel for cooling and moisturizing according to claims 1, 2, 6 to 9 of the present application. First, the water-retentive base material of the gel for cooling and moisturizing of the present example was constituted by blending the following components.

Sodium polyacrylate 5 g Polyacrylic acid 3 g Gelatin 2 g Polyvinyl alcohol 2 g Glycerin 15 g Sodium carboxymethylcellulose 1 g Ethyl alcohol 3 g Water 69 g 100 g Further, the pulp suspension was added 10: 1 (dry weight) Ratio).

The water-retentive base material and the pulp suspension were mixed as described below to prepare a gel composition for cooling / humidification. That is, (1) Gelatin is dissolved by heating in 10 g of water. (2) Polyvinyl alcohol is dissolved by heating in 10 g of water. (3) Add the above (1) and (2) and mix well with stirring. (4) Mix sodium polyacrylate with glycerin. (5) Add (4) to (3), add the rest, mix and stir, add further the pulp suspension and stir and mix well to obtain a muddy gel composition.

The mud gel composition prepared as described above was used to obtain a gel (A1) for cooling and moisturizing according to the present invention shown in the sectional view of FIG. That is, the slurry gel composition polypropylene liner (p) on the example 200~3000g / m ² about to spread to gel layer (a1) constitutes a further other side similarly as polypropylene A liner (p) was attached. In the gel for cooling and moisturizing (A1) obtained above, a group of fibers (f) derived from pulp is held in a substantially homogeneously dispersed manner in the gel body, and these groups of fibers (f) are entangled with each other. It constituted a three-dimensional network structure. Further, a part of the fiber group (f) was exposed on the gel surface.

The cooling / humidifying gel (A1) can also hold the amount of water brought in from the fiber group (f), and can contain a maximum of about 65 to 85% by weight of the entire gel layer. In this case, the water retention was significantly increased as compared with the conventional one. Further, the strength by the fiber group (f) was obtained, and the muddy gel composition could be formed into a relatively thick gel layer (a1).

The surface of the gel layer (a1) of the cooling / humidifying gel (A1) exposed by removing the liner (p) has a sufficient adhesive force to the skin or the like. In the attached state, the fiber group (f) dispersed in a network in the gel layer (a1) functions as a conduction path for the water content in the gel layer (a1), and the fiber group (f) of the network Since a part was exposed on the surface of the gel layer (a1), the water in the gel layer (a1) was easy to move and was easily diffused out of the gel layer, and the rate of water diffusion was high. As a result, the gel for cooling and moisturizing (A1) of the present example has an increased amount of water retention and a gel layer (a1) in which the conduction path opened to the atmosphere by the fiber group (f) entangled in a three-dimensional network. Because it is formed inside, the ability to keep cool and keep moisture is extremely large.

Example 2 This example is an example of a gel for cooling and moisturizing according to claims 3 and 5 to 9 of the present application. First, the water-retentive base material of the gel for cooling and moisturizing of the present example was constituted by blending the following components.

Sodium polyacrylate 5.0 g Polyacrylic acid 3.0 g Gelatin 4.0 g Polyvinyl alcohol 2.0 g Glycerin 15.0 g Sodium carboxymethyl cellulose 3.0 g Ethyl alcohol 5.0 g Sodium chloride 3.0 g Water 60.0 g 100.0 g Then, a pulp suspension was prepared at a ratio of 10: 1 (dry weight ratio).

The water-retaining base material and the pulp suspension were mixed as described below to prepare a gel composition for keeping cold and keeping moisture. That is, (1) Gelatin is dissolved by heating in 30 g of water. (2) Polyvinyl alcohol is dissolved by heating in 20 g of water. (3) Dissolve sodium chloride in 10 g of water. (4) Mix sodium polyacrylate with glycerin. (5) Add (2) and (3) to (1) and mix well by stirring. (6) Add (4) to (5), add the rest, mix and stir, add further the pulp suspension, mix well and mix to obtain a muddy gel composition.

The mud-like gel composition prepared as described above was used as a gel for cooling and keeping moisture in the same manner as in Example 1. The drawings for this are omitted. This gel for cooling and moisturizing had the same effect as that of Example 1, and the heat absorbing effect of sodium chloride contained in the water-retaining base material was added to further increase the cooling ability. .

Example 3 The procedure of Example 2 was repeated as shown in FIG. 2 except that the granular crystals (s) were used as dispersed and retained in the gel, instead of using sodium chloride in a solution state. A cooling / humidifying gel (A2) having the above composition was constructed.

In the cooling / humidifying gel (A2) of this example, the sodium chloride crystals (s) mixed in the gel layer (a2) are gradually dissolved by the moisture in the gel layer (a2), The endothermic process could be maintained, and as a result, a high cooling performance could be maintained.

Example 4 Instead of adding and mixing sodium chloride to the water-retentive base material, adding and mixing the pulp suspension in the same manner as in Example 2, except that sodium chloride was added to and mixed with the water-retentive base material. An example of the cooling / humidifying gel according to claim 5 was constructed. The drawing is omitted here. The gel for cooling and moisturizing of the present example had the same effect as that of Example 2.

Example 5 A cooling / humidifying gel was constructed in the same manner as in Example 3 except that urea crystals were used instead of sodium chloride. The drawings for this are also omitted. The gel for keeping cold and keeping moisture of this example had the same effect as that of Example 3.

Example 6 This example relates to an example of the gel laminate according to claim 10 of the present application. The gel laminate (A3) of the present example has a two-layer structure in which a second gel layer (a4) is laminated on a first gel layer (a3) as shown in a sectional view of FIG. It is held between the upper and lower polypropylene liners (p) (p). For both the first gel layer (a3) and the second gel layer (a4), a mud-like gel composition having the same configuration as that of Example 5 is used.

A non-woven fabric having a coarse mesh made of a mixed fiber in which polyester fibers and rayon fibers are entangled in a ratio of 1: 1 between the first gel layer (a3) and the second gel layer (a4). A net-like sheet material (n1) is provided.

The gel laminate (A3) for cooling and moisturizing having a two-layer structure as described above has the same effect as the gel of the fifth embodiment, but has a thicker gel layer than the gel of the fifth embodiment. Because it can be configured, the effective duration of cooling and moisturizing can be greatly extended.

Further, in each of the first and second gel layers (a3) and (a4), the fiber group (f) is entangled in a three-dimensional network and is held almost uniformly dispersed. Each of the gel layers (a3) and (a4) has good shape-retaining property, and even when laminated in this manner, the entire laminate does not collapse. Therefore, a laminated structure of three or more layers is also possible, and the effective duration of cooling and moisture retention can be further extended.

Further, since the viscosity of the gel itself is increased by the fiber group (f) contained in the first and second gel layers (a3) and (a4), the gel sheet (n1) is different from the gel. The adhesiveness of the gel was also very good, and peeling between the gel layers (a3) and (a4) hardly occurred, and the shape retention of the entire laminate was also good.

Example 7 This example relates to an example of the gel laminate according to claim 11 of the present application. The gel laminate (A4) of this example has a two-layer structure in which a heat-absorbing gel layer (a6) is laminated on a lower cooling / humidifying gel layer (a5) as shown in a sectional view of FIG. Yes, held between the upper and lower polypropylene liners (p) (p). A muddy gel composition having the same configuration as that of Example 5 was used for the cooling / humidifying gel (a5), and the pulp suspension was not added to the endothermic gel layer (a6). Uses a muddy gel composition having the same configuration as in Example 5.

A mesh sheet material (n1) made of non-woven fabric similar to that in Example 6 is interposed between the above-mentioned gel layer (a5) for keeping cold and moisture and the gel layer (a6) having heat absorption.

In the above-described two-layer cooling / humidifying gel laminate (A4), the endothermic reaction generated in the upper heat-absorbing gel causes the moisture transfer to the lower cooling / water-holding gel layer. Since water diffusion can be promoted, the cooling / humidifying ability can be adjusted by adjusting the thickness of each of these layers (a5) and (a6).

The cooling / humidifying gel layer (a5) and the heat-absorbing gel layer (a6) may be formed separately from each other, and may be used when necessary, either directly or by laminating via a net-like sheet material. It is possible.

Example 8 This example relates to another example of the gel laminate according to claim 12 of the present application, and uses a non-woven reticulated sheet made of rayon fiber. A double-coated cold- and moisture-retaining gel laminate was prepared in the same manner as in Example 6, except that the material was immersed in water to absorb water. The drawings relating to this are the same as in Embodiment 6 and will not be described.

In the gel laminate for cooling / humidity retention obtained in this example, the moisture introduced by the net-like sheet material is added to the moisture content contained in each of the first and second gel layers. The cooling / humidifying effect can be maintained more than the gel laminate of (1). Also, in this gel laminate, no separation occurred between the gel layers.

Example 9 This example was performed in the same manner as in Example 6 except that a cotton net-like sheet material was used after absorbing water in the same manner as in Example 8 in place of the nonwoven net-like sheet material made of rayon fiber. A double-coated cold / humidity holding gel laminate was obtained. The drawings relating to this are the same as those in the sixth embodiment, and a description thereof will be omitted.

This cold / humidity retaining gel laminate also had the same effects as in Example 8. Also, no separation between the gel layers occurred in the gel laminate for cooling / humidification. [Example 10] In this example, the mesh sheet material made of the nonwoven fabric used in Example 6 was needled and fluffed to randomly protrude fiber ends above and below the sheet surface. As shown in FIG. 5, two gels (n2) each having an anchor effect were used, and as shown in FIG. a7) (a8) (a9) A so-called triple-coated cooling / humidifying gel laminate (A5) was formed using the same members as in Example 6 except that the laminate had a three-layer structure.

The thus obtained gel laminate (A5) for cooling / humidifying property had a very long cooling / humidifying effect and excellent cooling / humidifying ability. Also, no delamination occurred between the gel layers in the gel laminate (A5) for keeping cold and moisture.

Example 11 This example relates to another example of the gel laminate according to claim 13 or claim 14 of the present invention, in which urea is supported on a nonwoven fabric mesh sheet material. A double-coated cold- and moisture-retaining gel laminate was formed in the same manner as in Example 6 except that the gel was used as in Example 6. The drawings relating to this are the same as those in the sixth embodiment, and will not be described.

In the cooling / humidifying gel laminate of this example, since the urea is supported on the mesh sheet in addition to the urea crystals dispersed and held in each gel layer, the heat absorbing action is continued, and It can maintain and exhibit the cooling / moisturizing ability more than the gel laminate.

Example 12 This example relates to an example of the cooling / moisturizing patch according to claim 15 of the present application. FIG. 6 shows a cross-sectional view of the adhesive material (B1) for cooling and moisturizing of the present example. The adhesive material (B1) has a breathable sheet support (1) and Example 5 spread on the support (1). It comprises a gel layer (a10) made of the same composition of the muddy gel composition, and a polypropylene liner (p) attached to the surface of the gel layer (a10).

The support (1) has a thickness of 1.5 mm, the number of cells is 30 ± 4/25 mm, the tensile strength is 20 kg or more, the elongation is 150% or more, and the density is 30 ± 5 kg / m ² continuously. It is composed of polyester urethane foam composed of air bubbles.

Therefore, the adhesive material (B1) is rich in flexibility and affixed by forming the support (1) from polyurethane foam, in addition to the gel layer itself having the same action as in Example 5. Since it does not place a burden on the part and is excellent in printability, characters, trade marks, characters, and the like can be printed clearly as appropriate.

Examples 13 to 17 Each of the gel laminates shown in Examples 6 to 11 was provided on a urethane foam-made air-permeable sheet support similar to that in Example 12, and the same as in Example 12. A cold / humidity patch with the above composition was obtained. The drawings for these are omitted. These patches exhibited a synergistic effect between the action of each gel laminate and the action based on the support.

Example 18 This example relates to another example of the cold / humidity adhesive material according to claim 17 or 18 of the present application, and is a urethane foam similar to that in Example 12. A cold / humidity patch was constructed in the same manner as in Example 12, except that urea was supported on a gas-permeable sheet support made of Nippon Steel Co., Ltd. The drawings relating to this are omitted. The patch of the present example had a further increased cooling performance as compared with the patch obtained in Example 12.

[0070]

[Effect of the invention]

 According to the cool / humidity retaining gel of the first invention of the present application, a large amount of water can be retained in the water retaining material and the moisture retention ability is excellent, and moisture easily moves in the substrate due to the fibers. In addition, these fibers facilitate the diffusion of moisture from the water-retentive base material to the outside, so that the fibers have excellent cooling performance.

Further, the fibers dispersed in the water-retentive base material have a good affinity for the base material due to the hydrophilicity of the surface thereof, and act as a reinforcing material. The water retention base material can be increased, so that the water retention amount can be increased to maintain the cooling / humidifying effect.

Further, by adding a compound that is endothermicly soluble in water, a compound having better cooling performance can be obtained.

According to the gel laminate of the second invention of the present application, since the gel laminate is laminated in multiple layers via the net-like sheet material, the water holding capacity of the entire gel laminate is greatly increased by adjusting the number of layers. Therefore, the cooling / humidifying action time can be significantly increased.

According to the cooling / humidifying patch of the third invention of the present application, since the gel of the first invention or the gel laminate of the second invention is held on the air-permeable sheet support, the cooling ability is improved. It is possible to provide a long-time type adhesive material which is excellent and has a remarkably extended cooling / humidifying effect.

The gel and the gel laminate for cooling and moisturizing of the present invention and the adhesive material holding the same have increased cooling and moisturizing ability and markedly prolonged the cooling and moisturizing action time. Medical cooling pad, cooling packaging material for cooling and protection of fresh fish, drinking water, alcohol, etc. during transportation, cooling sheet to prevent melting when transporting chocolate, muscle cooling after sports and after tanning Excellent effects can be exhibited and maintained for various uses, such as pads for skin care, protective pads for hydration of dry skin, anti-inflammatory, and cataplasms further added with analgesics.

[Submission date] October 7, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents] [Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a gel laminate for cooling and moisture retention and a patch for cooling and moisture retention.

[0002]

[Prior art]

 For example, instead of ice sacs and ice pillows against heat generated by the human body, as a cold insulating material with excellent portability and sticking properties, a cold insulating and moisturizing adhesive material provided with a gel made of a water-soluble polymer and sodium chloride on a support is used. Are known.

[0003] By the way, in such a cold / humidity adhesive material, when priority is given to portability, the amount of the gel body held on the support is limited, and accordingly, the water retention amount is also limited. Therefore, the duration of the cooling / humidifying action must be shortened.

[0004]

[Problems to be solved by the invention]

 An object of the present invention is to provide a cold-holding / moisturizing gel laminate and a cold-holding / moisturizing patch which can appropriately adjust the duration of the cold-holding / humidifying action and have improved cooling ability.

[0005]

[Means for Solving the Problems]

 Thus, according to claim 1 of the present application, "the water-retentive matrix is composed of a water-retentive matrix composed of a water-soluble polymer and the fiber group (f) dispersed and held in the water-retentive matrix. Is a gel for cooling and moisturizing wherein the fiber group (f) contains at least 50% by weight of water, and the fiber group (f) has at least a surface hydrophilic and a part of which is exposed on the surface of the water-retentive base material. (A1) is a multilayer gel (A2) for cooling and moisturizing which is laminated in multiple layers via a net-like sheet (n1) "as the first invention of the present application.

Further, the present invention provides, as described in claim 15 of the present application, “a water-retentive matrix composed of a water-soluble polymer and a fiber group (f) dispersed and retained in the water-retentive matrix. The water-retentive base material contains 50% by weight or more of water, and the fiber group (f) is used such that at least the surface is hydrophilic and a part thereof is exposed on the surface of the water-retentive base material. The cooling / humidifying adhesive (B1) in which the cooling / humidifying gel (A1) thus obtained is held on the air-permeable sheet support (1) can be provided as the second device of the present invention.

Further, the present invention provides a cooling / humidifying adhesive material (B1) constituted by holding the gel / laminate (A2) for cooling / humidifying according to the first invention on a permeable sheet support (1). The present invention can also be provided as a third device.

[0008] The cold-holding / moisturizing gel (A1) used in the gel laminate of the first invention of the present application has at least a surface thereof in a water-holding matrix made of a water-soluble polymer containing 50% by weight or more of water. Since the hydrophilic fiber group (f) is dispersed, the water contained in the water-retentive base material can easily move inside the base material through the hydrophilic surface of the fiber group (f). In addition, since a part of the fiber group (f) is exposed on the surface of the water-retentive base material, moisture is easily diffused from this part. Accordingly, the rate of water diffusion from the water retention base material increases, and the cooling capacity increases.

Further, the fiber group (f) dispersed in the water-retentive base material has a good affinity for the base material due to the hydrophilicity of its surface and acts as if it were a reinforcing material. The base material is kept in shape without breaking. Therefore, the amount of the water retention base material can be increased while maintaining the shape, and the water retention amount can be increased to maintain the cooling / humidifying effect.

In the gel laminate (A2) of the first invention of the present application, the gel layers (a2) and (a3) are laminated in multiple layers via a net-like sheet material (n1). The amount of water retention and the rate of water release as the whole laminate (A2) can be adjusted, and thus the time for the action of cooling and moisturizing can be adjusted.

[0011] In the gel laminate (A2) of the first invention of the present application, by laminating the gel for cooling and moisture retention and the endothermic gel, the start of the endothermic reaction and the elapsed time and speed thereof can be adjusted.

[0012] The adhesive (B1) for cooling and moisturizing according to the second and third inventions of the present application is a gel (A1) used in the first invention or the gel laminate (A2) according to the first invention is a permeable sheet support. (1) Since it is held on the upper side, an adhesive material having excellent cooling ability and having a long cooling / humidifying action time can be obtained.

[0013]

[Embodiment of the invention]

 The fiber group (f) used in the present invention only needs to have at least a surface having a hydrophilic property. For example, pulp, cotton yarn, rayon and other various hydrophilic resin fibers, and a surface having a hydrophilic treatment may be used. Examples include, but are not limited to, various types of hydrophobic resin fibers, glass fibers, and ceramic fibers. Further, the fiber groups are dispersed and held in the water-retentive base material. In this case, it is preferable that the fiber groups are dispersed so as to be intertwined three-dimensionally. It is preferably used in a slurry state.

[0014] The fiber group (f) is finally obtained when the fiber group (f) is dispersed and held in the water-retentive base material in a pre-hydrated state, as described in the "claim 2" or "claim 16" of the present application. This is a preferred embodiment because the water content brought in by the fiber group is added to the gel excessively, and the cooling / humidifying effect can be further enhanced.

The water-retentive matrix used in the present invention includes polyacrylic acid and its salts, gelatin, polyvinyl alcohol, sodium carboxymethylcellulose, as described in claim 6 or claim 20 of the present application. Water-soluble polymers such as carrageenan, sodium alginate, and carboxyvinyl polymer. These water-soluble polymers may be used singly, but it is preferable to use a mixture of several types from the viewpoint of cooling, moisturizing, sticking power and the like. Preferred examples include those composed of a water-soluble polymer consisting of "a mixture of polyacrylic acid and sodium polyacrylate, polyvinyl alcohol, gelatin, and carrageenan" as shown in "21." However, it is not limited to this.

In the present invention, when the water-soluble polymer is composed of a mixture of polyacrylic acid and sodium polyacrylate, polyvinyl alcohol, gelatin, and carrageenan, for example, gelatin and carrageenan are compared with polyvinyl alcohol at the same level. Polyacrylic acid and sodium polyacrylate are blended in a ratio (weight ratio) of 1: 1 to 1: 5, and are selected so as to be 0.1 to 25% by weight in total. It is preferably 5 to 15% by weight, more preferably 1 to 10% by weight, and most preferably 2 to 8% by weight. At this time, it is preferable that polyacrylic acid and sodium polyacrylate are blended in a ratio (weight ratio) of 1: 0.5 to 1:20 with respect to polyvinyl alcohol.

[0017] If the water-retentive base material contains a compound that is endothermically soluble in water as described in claim 3 or claim 17 of the present application, a gel finally obtained is obtained. This is preferred because an endothermic reaction takes place therein and the cooling effect is further enhanced.

The compound that can be absorbed endothermically in water may be contained in a solid form or in a solution form. The former is preferable from the viewpoint of sustainability of the former.

The content of the compound in the water-retentive base material may be contained in a water-soluble polymer constituting the water-retentive base material. As set forth in claim 18, the particles may be dispersed and held in the water-retentive matrix in a state of being “supported by a fiber group”, or may be a combination of these states. Also good.

Examples of the compound that can be dissolved endothermically in water include sodium chloride, urea, and sodium nitrate as described in the present invention. These may be used alone or as a mixture of two or more.

The above-mentioned compound is used in a proportion of 0.1 to 25% by weight of the water-retentive base material. It is preferably from 5 to 20% by weight, more preferably from 2 to 8% by weight.

The pH of the water-retentive base material is usually adjusted in the range of 4 to 10, preferably 5 to 9, and when it is 6 to 8, the cooling sensation of the skin and the exhilaration after exfoliation are obtained. It is more preferable in that it can be obtained.

As described in claim 8 or claim 22 of the present application, the addition of “lower alcohol” to the water-retentive base material promotes the evaporation of water to improve the cooling / cooling effect. It is preferable from the point of increasing. The lower alcohol includes, for example, methyl alcohol, ethyl alcohol, propyl alcohol and the like, but is not limited thereto, and any alcohol that can be uniformly mixed with water and azeotrope at a temperature lower than the boiling point of water is preferable. Used for Further, a known humectant such as glycerin or polyethylene glycol may be appropriately mixed in the water-retentive base material.

In the invention of the present application, as described in the “claim 9” or “claim 23” of the present application, it is convenient to handle “the liner (p) is attached to at least one gel-exposed surface”. This is a preferred embodiment.

The reticulated sheet (n1) used for the gel laminate (A2) of the present invention is any one as long as the above-mentioned cooling / humidifying gel (A1) can be adhered and attached to both surfaces thereof. The reticulated sheet (n1) itself preferably has water retention and water permeability. As such a sheet material (n1), for example, a sheet material made of paper or cloth, or a relatively coarse nonwoven sheet material made of a resin fiber having hydrophilicity or water absorption is preferable. But are not particularly limited to these.

[0026] Of the net-like sheet material (n1), those made of resin fibers are subjected to a chemical surface treatment or a physical surface treatment so as to exhibit an anchor effect on the water-retentive base material. The gel layers (a2) and (a3) can be firmly adhered and engaged on both sides of the sheet material (n1), which is preferable for laminating the gel in multiple layers.

The chemical treatment includes, for example, imparting hydrophilicity to the resin fiber surface using an appropriate surfactant. When such a chemical surface treatment is performed, it is preferable that the water retention and water permeability of the sheet material itself are not impaired. Examples of the physical treatment include, for example, applying a needling or the like to a net-like sheet material to make it fluff.

When the net-like sheet material is used by being hydrated as described in the present invention, the amount of water carried by the net-like sheet material is added as the water retention amount of the entire gel layer, and the total water content is reduced. It is preferable in that the amount can be increased to contribute to the maintenance of the cooling / humidifying effect.

Further, when the net-like sheet material is used by supporting a compound that is endothermically soluble in water as described in claim 13 of the present application, an endothermic reaction is caused between the gel layers to further increase the temperature. This is a preferred embodiment in that a cooling effect can be obtained. As the compound, the same compound as described above is similarly used.

In the second and third inventions of the present application, the permeable sheet support (1) used for the patch (B1) is not limited as long as it is made of a material having air permeability. And a material such as a woven fabric, a nonwoven fabric, a reticulated resin sheet, or an expandable resin sheet having open cells.

Preferred examples of such a breathable sheet support (1) include those formed of a flexible polyurethane foam having open cells. This flexible polyurethane foam has sufficient extensibility and the restoring force due to elongation is reduced, so that almost no load is applied regardless of the uneven surface of the part to be affixed. It can be aligned in a state and sufficiently. In addition, because the printability is good, characters, trade marks, characters, and the like can be printed clearly as appropriate.

When the air-permeable sheet support is used by supporting an endothermic compound in water as described in claim 25 of the present application, an endothermic reaction is caused in the gel body, and the air-permeable sheet support is further enhanced. This is a preferred embodiment in that a cooling effect can be obtained.

Examples of uses of the gel laminate for cooling and moisture retention and the patch for cooling and moisture retention according to the present invention include, for example, medical cooling pads for keeping the human body cool when heat is generated, fresh fish, drinking water, alcohols, etc. Packaging materials for cooling and protection during transportation of chocolate, cooling sheets to prevent melting when transporting chocolate, pads for muscle cooling after sports and skin care after sunburn, and hydration for dry skin Examples include a protective pad, an anti-inflammatory agent, a pulp material further added with an analgesic, but are not particularly limited thereto.

Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.

[Preparation Example 1 of Cooling / Moisturizing Gel] First, the water retaining base material of the cooling / humidifying gel of this example was constituted by blending the following components.

[0036]

A pulp suspension was prepared at a ratio of 10: 1 (dry weight ratio) with respect to the water-retentive base material.

[0038] The water-retentive base material and the pulp suspension were mixed as described below to prepare a gel composition for cooling and moisturizing. That is, (1) Gelatin is dissolved by heating in 10 g of water. (2) Polyvinyl alcohol is dissolved by heating in 10 g of water. (3) Add the above (1) and (2) and mix well with stirring. (4) Mix sodium polyacrylate with glycerin. (5) Add (4) to (3), add the rest, mix and stir, add further the pulp suspension and stir and mix well to obtain a muddy gel composition.

The muddy gel composition prepared as described above is spread on a polypropylene liner (p) at, for example, about 200 to 3000 g / m ² to form a gel layer (a1). In the gel for cooling and moisturizing (A1) obtained above, the fiber group (f) derived from pulp is held in a substantially homogeneously dispersed manner in the gel body, and these fiber groups (f) are entangled with each other. At that time, a three-dimensional network structure was formed. Further, a part of the fiber group (f 2) was exposed on the gel surface.

The gel for cooling and moisturizing (A1) can also hold the amount of moisture brought in from the fiber group (f), and contains a maximum of about 65 to 85% by weight of the entire gel layer. The water retention was significantly increased compared to the conventional one. Further, the strength by the fiber group (f) was obtained, and the muddy gel composition could be formed into a relatively thick gel layer (a1).

The surface of the gel layer (a1) of the gel (A1) for cooling / humidification exposed after removing the liner (p) has a sufficient adhesive force to the skin and the like. In the adhered state, the fiber group (f) dispersed in the gel layer (a1) in the form of a mesh functions as a conduction path for the water content in the gel layer (a1), and the network fiber group (f) Since part of ()) was exposed on the surface of the gel layer (a1), the water in the gel layer (a1) was easy to move and diffused out of the gel layer, and the rate of water release was high. As a result, the gel for cooling and moisturizing (A1) of this example has an increased water holding capacity and a gel layer (a1) in which the conduction path opened to the atmosphere by the fiber group (f) entangled in a three-dimensional network. Because it is formed inside, the ability to keep cool and moisturize is remarkably large.

[Preparation Example 2 of Cooling / Moisturizing Gel] The water retaining base material of the cooling / humidifying gel of this example was constituted by blending the following components.

[0043]

A pulp suspension was prepared at a ratio of 10: 1 (dry weight ratio) with respect to the water-retentive base material.

The water-retentive base material and the pulp suspension were mixed as described below to prepare a gel composition for cooling / humidification. That is, (1) Gelatin is dissolved by heating in 30 g of water. (2) Polyvinyl alcohol is heated and dissolved in 20 g of water. (3) Dissolve sodium chloride in 10 g of water. (4) Mix sodium polyacrylate with glycerin. (5) Add (2) and (3) to (1) and mix well by stirring. (6) Add (4) to (5), add the rest, mix and stir, add further the pulp suspension, mix well and mix to obtain a muddy gel composition.

The mud-like gel composition prepared as described above was used to prepare a gel for cooling and keeping moisture in the same manner as in Preparation Example 1.

The gel for cooling and moisturizing has the same effect as that of Preparation Example 1, and further has an endothermic effect of sodium chloride contained in the water-retaining matrix, thereby further increasing the cooling ability. Met.

[Preparation Example 3 of Gel for Cooling / Humidation] In the same manner as in Preparation Example 2 except that sodium chloride is used as dispersed in gel while maintaining granular crystals (s) instead of using it in a solution state, Configured.

In the cooling / humidifying gel (A2) of this example, the sodium chloride crystals (s) mixed in the gel layer (a2) are gradually dissolved by the water in the gel layer (a2), and The accompanying endothermic process could be maintained, and as a result, a high cooling performance could be maintained.

[Preparation Example 4 of Cooling / Moisturizing Gel] In the same manner as in Preparation Example 2, except that sodium chloride was added and mixed to the pulp suspension instead of adding and mixing to the water-retaining base material, A moisturizing gel was constructed. The gel for keeping cold and keeping moisture of this example had the same effect as that of Preparation Example 2.

[Preparation Example 5 of Cooling / Humidifying Gel] A cooling / moisturizing gel was prepared in the same manner as in Preparation Example 3 except that urea crystals were used instead of sodium chloride. The gel for cooling and moisturizing of this example had the same effect as that of Preparation Example 3.

Example 1 This example relates to an example of the gel laminate according to claim 1 of the present application. The gel laminate (A3) of this example has a two-layer structure in which a second gel layer (a4) is laminated on a first gel layer (a3) as shown in a sectional view of FIG. It is held between the upper and lower polypropylene liners (p) (p). For both the first gel layer (a3) and the second gel layer (a4), a muddy gel composition having the same configuration as in Preparation Example 5 is used.

[0053] Between the first gel layer (a3) and the second gel layer (a4), there is a coarse mesh made of a mixed fiber in which polyester fiber and rayon fiber are entangled at a ratio of 1: 1. A net-like sheet material (n1) made of non-woven fabric is interposed.

The gel laminate (A3) for cooling and moisturizing having a two-layer structure as described above has the same effect as that of the gel of Preparation Example 5, but has a thicker gel layer than the gel of Preparation Example 5. As a result, the effective duration of cooling and moisturizing can be extended very long.

Further, the first and second gel layers (a3) and (a4) hold the fiber groups (f) in a three-dimensional network and are almost uniformly dispersed. The gel layers (a3) and (a4) have good shape-retaining properties, and even when laminated in this way, the entire laminate does not lose its shape. Therefore, a laminated structure of three or more layers is also possible, and the effective duration of cooling and moisturizing can be further extended.

Further, the viscosity of the gel itself is increased by the fiber group (f) contained in each of the first and second gel layers (a3) and (a4), so that the reticulated sheet material (n1) is different from the gel. The adhesiveness of the gel was also very good, and peeling between the gel layers (a3) and (a4) hardly occurred, and the shape retention of the entire laminate was also good.

Example 2 This example relates to an example of the gel laminate according to claim 10 of the present application. The gel laminate (A4) of this example has a two-layer structure in which an endothermic gel layer (a6) is laminated on a lower cooling / humidity retaining gel layer (a5) as shown in a sectional view of FIG. Yes, held between upper and lower polypropylene liners (p) (p). A muddy gel composition having the same composition as that of Preparation Example 5 was used for the gel layer (a5) for cooling and moisturizing, and no pulp suspension was added to the heat absorbing gel layer (a6). Except for this, a muddy gel composition having the same configuration as that of Preparation Example 5 was used.

Then, a net-like sheet material (n1) made of non-woven fabric similar to that of the first embodiment is interposed between the above-mentioned gel layer (a5) for keeping cold and moisture and the gel layer (a6).

In the above two-layer gel laminate for cooling and moisture retention (A4), the endothermic reaction generated in the upper heat absorbing gel causes water transfer to the lower cooling and moisture retaining gel layer. In addition, since water diffusion can be promoted, the cooling / humidifying ability can be adjusted by adjusting the thickness of each of these layers (a5) and (a6).

Further, the gel layer (a5) for cooling and moisturizing and the heat absorbing gel layer (a6) may be constituted separately from each other, and may be used by laminating each other directly or via a net-like sheet material when necessary. It is possible.

Example 3 This example relates to another example of the gel laminate according to claim 12 of the present application, and uses a non-woven reticulated sheet made of rayon fiber and uses this sheet. A double-coated cold- and moisture-retaining gel laminate was produced in the same manner as in Example 1 except that the material was immersed in water and used after absorbing water. The drawings relating to this are the same as those in the first embodiment, and will not be described.

In the gel laminate for cooling / humidity retention obtained in this example, the moisture introduced by the net-like sheet material is added to the moisture content contained in each of the first and second gel layers. The cooling / humidifying effect can be maintained more than the gel laminate of (1). Also, in this gel laminate, no separation occurred between the gel layers.

Example 4 This example was performed in the same manner as in Example 1 except that a cotton net-like sheet material was used after absorbing water in the same manner as in Example 3 in place of the rayon fiber non-woven mesh net-like sheet material. A double-coated cold / humidity holding gel laminate was obtained. The drawings relating to this are the same as in the first embodiment, and will not be described.

The gel laminate for cooling / humidifying effect exhibited the same effects as in Example 3. Also, no separation between the gel layers occurred in the gel laminate for cooling / humidification.

Example 5 In this example, the mesh sheet material made of nonwoven fabric used in Example 1 was needled and fluffed to randomly project fiber ends above and below the sheet surface. As shown in FIG. 3, first to third gels composed of a mud-like gel composition having the same structure as in Preparation Example 5 were obtained by using two sheets (n2) having a physical anchor effect. A so-called triple coat cooling / moisturizing gel laminate (A5) was constructed using the same members as in Example 1 except that the laminate had a three-layer structure composed of the layers (a7), (a8), and (a9).

The thus obtained gel laminate (A5) for keeping cold / humidity had a very long cooling / humidifying effect and was excellent in cooling / humidifying ability. In addition, no separation between the gel layers occurred in the cooling / humidifying gel laminate (A5).

Example 6 This example relates to another example of the gel laminate according to claim 13 or claim 14 of the present invention, in which urea is supported on a non-woven mesh sheet material. A double-coated cold- and moisture-retaining gel laminate was formed in the same manner as in Example 1 except that the gel laminate was used. The drawings relating to this are the same as in the first embodiment, and a description thereof will be omitted.

In the cooling / humidifying gel laminate of this example, since the urea is supported on the mesh sheet in addition to the urea crystals dispersed and held in each gel layer, the endothermic effect is maintained. It can maintain and exhibit the cooling / moisturizing ability more than the gel laminate.

Example 7 This example relates to an example of the cooling / moisturizing patch according to claim 15 of the present application. FIG. 4 shows a cross-sectional view of the adhesive material (B1) for cooling and moisturizing of the present example. The adhesive material (B1) includes a permeable sheet support (1) and Preparation Example 5 spread on the support (1). It is composed of a gel layer (a10) composed of the same composition of the mud-like gel composition, and a polypropylene liner (p) adhered to the surface of the gel layer (a10).

The support (1) has a thickness of 1.5 mm, the number of cells is 30 ± 4/25 mm, the tensile strength is 20 kg or more, the elongation is 150% or more, and the density is 30 ± 5 kg / m ^2. Of open-cell polyester urethane foam.

Accordingly, the above-mentioned patch (B1) is rich in flexibility by constituting the support (1) with polyurethane foam, except that the gel layer itself exhibits the same action as in Preparation Example 5, and Since it does not place a burden on the affixed portion and is excellent in printability, characters, trade marks, characters, and the like can be printed clearly as appropriate.

[Examples 8 to 13] Each of the gel laminates shown in Examples 1 to 6 was provided on a urethane foam permeable sheet support similar to that of Example 7, and the gel laminates of Examples 7 to 13 were provided. A cold / humidity patch having a similar configuration was obtained. The drawings for these are omitted. These patches exhibited a synergistic effect between the action of each gel laminate and the action based on the support.

Example 14 This example relates to another example of the cooling / humidifying adhesive material according to claim 25 or claim 26 of the present application, and is the same urethane foam as in Example 7. A cold / humidity patch was constructed in the same manner as in Example 7 except that urea was supported on a gas-permeable sheet support. The drawings relating to this are omitted. The patch of the present example had a further increased cooling performance than that obtained in Example 7.

[0074]

[Effect of the invention]

 According to the cooling / humidifying gel laminate of the present invention, the cooling / humidifying gel used for this is capable of retaining a large amount of water in the water-retaining matrix and has excellent moisture-retaining ability. Moisture easily moves in the base material, and water is easily diffused from the water-retentive base material to the outside by these fiber groups.

Further, the fiber group dispersed in the water-retentive base material has good affinity for the base material due to the hydrophilicity of its surface, and acts like a reinforcing material. The water retention base material can be increased, so that the water retention amount can be increased to maintain the cooling / humidifying effect.

Further, by adding a compound that is endothermicly soluble in water, it is possible to obtain a compound having better cooling performance.

In addition, since the laminate is laminated in multiple layers via the net-like sheet material, the amount of water retention as the whole gel laminate can be greatly increased by adjusting the number of layers, and thus, the cooling and cooling can be achieved. The moisturizing time can be significantly increased.

According to the cooling / humidifying patch of the present invention, it is possible to provide a long-lasting patch having excellent cooling ability and a remarkably extended cooling / humidifying action.

The cooling / moisturizing gel laminate and the cold / humidifying adhesive material of the present invention have an increased cooling / moisturizing ability and a remarkably long cooling / humidifying action time, so that the medical care for human body cooling at the time of heat generation. Cooling pad, cooling wrapping for cooling and protection of fresh fish, drinking water, alcohol, etc. during transportation, cooling sheet to prevent melting when transporting chocolate, muscle cooling after sports and skin care after sunburn, etc. Excellent effects can be exhibited and sustained for various uses, such as a pad, a protective pad for hydration of dry skin, an anti-inflammatory, and a pulp material further added with an analgesic.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of an example of a cooling / humidifying gel according to the first invention of the present application.

FIG. 2 is a schematic cross-sectional view of another example of a gel for cooling and moisturizing according to the first invention of the present application.

FIG. 3 is a schematic cross-sectional view of an example of a gel laminate for cooling and moisturizing according to the second invention of the present application.

FIG. 4 is a schematic cross-sectional view of another example of the gel laminate for cooling / humidifying according to the second invention of the present application.

FIG. 5 is a schematic cross-sectional view of still another example of the gel laminate for cooling / humidifying according to the second invention of the present application.

FIG. 6 is a schematic cross-sectional view of an example of the adhesive material for keeping cold and moisture according to the third invention of the present application.

[Explanation of symbols]

 (A1) (A2): Cooling / moisturizing gel (A3) (A4): Double-coated cold / moisturizing gel laminate (A5): Triple-coated cold / humidifying gel laminate (B1): Cooling / moisturizing (A1)-(a10)… Gel layer (f)… Fiber group (n1) (n2)… Reticulated sheet material (p)… Polypropylene liner (s)… Sodium chloride crystal (1)… Breathable sheet Support

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[Procedure amendment]

[Submission date] October 7, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

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[Document Name] Statement

[Name of device] Cooling / moisturizing gel laminate and cold / humidifying adhesive

[Utility model registration claims]

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of an example of a gel laminate for cooling / humidifying according to the present invention.

FIG. 2 is a schematic cross-sectional view of another example of the gel laminate for cooling / humidifying according to the present invention.

FIG. 3 is a schematic cross-sectional view of still another example of the gel laminate for cooling / humidifying according to the present invention.

FIG. 4 is a schematic cross-sectional view of an example of the adhesive material for cooling and moisturizing of the present invention.

[Description of References] (A3) (A4): Double-coated gel laminate for cooling / humidity retention (A5): Triple-coated gel laminate for cooling / humidification (B1): Adhesive material for cooling / humidification (a3)- (A10): gel layer (f): fiber group (n1) (n2): mesh sheet material (p): polypropylene liner (1): air-permeable sheet support

[Procedure amendment 2]

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Claims (18)

[Utility model registration claims] 1. A water-retentive base material comprising a water-soluble polymer, and a group of fibers dispersed and held in the water-retentive base material, wherein the water-retentive base material contains 50% by weight or more of water, A gel for cooling and moisturizing, wherein at least the surface of the fiber group is hydrophilic and a part thereof is used to be exposed on the surface of the water-retentive base material. 2. The fiber group is hydrated.
The gel for cooling / humidifying according to the description. 3. The cooling / humidifying gel according to claim 1, wherein the water-retentive matrix contains a compound that is endothermicly soluble in water. 4. The cooling / humidifying gel according to claim 1, wherein a compound endothermic to water is supported on the fiber group. 5. The gel for cooling and moisturizing according to claim 3, wherein the compound endothermically soluble in water is one or a mixture of two or more selected from sodium chloride, urea, and sodium nitrate. . 6. The water-soluble polymer comprises one or a mixture of two or more selected from the group consisting of polyacrylic acid and salts thereof, polyvinyl alcohol, carboxyvinyl polymer, gelatin, sodium carboxymethylcellulose, and carrageenan. The gel for cooling and moisturizing according to any one of 1 to 5. 7. A water-soluble polymer comprising a mixture of polyacrylic acid and sodium polyacrylate, polyvinyl alcohol, gelatin and carrageenan.
The gel for cooling / humidifying according to the description. 8. The cooling / humidifying gel according to claim 1, wherein a lower alcohol is added to the water-retentive base material. 9. The gel according to claim 1, wherein a liner is attached to at least one exposed surface of the water-retentive base material. 10. A cooling / humidifying gel laminate in which the cooling / humidifying gel according to any one of claims 1 to 9 is laminated in multiple layers via a mesh sheet. 11. A gel for cooling and moisturizing according to claim 1, comprising water-soluble polymer and water.
A gel laminate for cooling and moisturizing, comprising a water-retentive base material containing 50% by weight or more and an endothermic gel containing a compound that is endothermic in water and containing the compound in a multi-layered manner via a mesh sheet. 12. The cooling / humidifying gel laminate according to claim 10, wherein the mesh sheet contains water. 13. The cooling / humidifying gel laminate according to claim 10, wherein a compound that is endothermic in water is supported on the mesh sheet. 14. The compound endothermicly soluble in water,
The gel laminate according to claim 13, which is one or a mixture of two or more selected from sodium chloride, urea, and sodium nitrate. 15. An adhesive material for cooling and moisture retention, wherein the gel for cooling and moisture retention according to claim 1 is held on a breathable sheet support. 16. A cooling / humidifying adhesive material comprising the gel laminate for cooling / humidifying according to claim 10 held on a permeable sheet support. 17. The adhesive material for cooling / humidity retention according to claim 16, wherein a compound that is endothermically soluble in water is supported on the air-permeable sheet support. 18. The patch for cooling and moisturizing according to claim 17, wherein the compound endothermicly soluble in water is one or a mixture of two or more selected from sodium chloride, urea, and sodium nitrate.