JP2019183337A - Functional sheet and functional sheet kit - Google Patents

Abstract

To provide a functional sheet and a functional sheet kit.SOLUTION: A functional sheet for sucking up water contains an absorbent material and a functional component. When in use with at least a part of the sheet in contact with water, the water is sucked up and the functional component exhibits functions due to a reaction with the water. The functional sheet has a hindrance region for hindering movement of the water in sucking up water.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a functional sheet that exhibits a function by contact with water, and particularly relates to a water-sucking type functional sheet and a functional sheet kit including the same. The functional sheet of the present invention includes insect attractant, anaerobic environment forming material, anesthetic agent, fatigue recovery material, fragrance base material, insect repellent, antibacterial / antiviral sheet, agricultural material, experimental material, It can be preferably used in the fields of cosmetics, pharmaceutical parts, pharmaceuticals, cleaning supplies, miscellaneous goods and the like.

  As an example of the functional sheet, there is a carbon dioxide generating sheet that generates carbon dioxide by the reaction of carbonate and acid. For example, Patent Literature 1 discloses five layers obtained by laminating a water-permeable breathable nonwoven fabric, sodium hydrogen carbonate, a coarse nonwoven fabric, citric acid or sodium dihydrogen citrate, and a water-permeable breathable nonwoven fabric in this order. A sheet-like pack material having a structure is disclosed. In the configuration of Patent Document 1, when a user impregnates a sheet-like pack material with water such as lotion, water is supplied to sodium hydrogen carbonate and citric acid or sodium dihydrogen citrate through a water-permeable breathable nonwoven fabric. . Both sodium bicarbonate and citric acid or sodium dihydrogen citrate are soluble in water. Then, the dissolved solution comes into contact through the coarse nonwoven fabric and starts the reaction to generate carbon dioxide gas.

  Another example of the functional sheet is a sheet containing a functional component such as an antibacterial agent or insect repellent. For example, Patent Document 2 discloses a functional sheet obtained by applying a cyclodextrin solution added with an antibacterial agent or insect repellent to a substrate surface such as paper or nonwoven fabric by means of spraying or brushing and drying. Is disclosed. The functional sheet can be used for food wrapping, the inner surface of a storage container, and the like, and the functional component is released when it comes into contact with water.

JP 2014-65707 A JP 2002-29901 A

  Depending on the use of the functional sheet, it may be preferable that the function is exerted intensively in a relatively short time, or the function may be preferably exerted continuously over a long time. For example, in Patent Document 1, for the purpose of maintaining the generation time of carbon dioxide gas in a sheet-shaped pack material, water is added to a layer in which sodium hydrogen carbonate and either citric acid or sodium dihydrogen citrate are blended. Sex carboxymethyl cellulose (CMC) is mixed and blended. However, the effect of extending the carbon dioxide generation time by blending CMC is limited. For this reason, there is a demand for maintaining the function with another configuration.

  The objective of this invention is providing the functional sheet | seat excellent in the sustained effect of function display, and the functional sheet | seat kit containing this.

  The present invention for solving the above-described problems has the following aspects.

1. It contains an absorbent material and a functional component, and when used in a form in which at least a part is in contact with water, the functional component exerts its function by sucking up the water and reacting with the water. A water uptake type functional sheet, wherein the functional sheet has an inhibition region in which movement of the water during water uptake is inhibited.

2. The inhibition region is a high-density portion having a higher density than the periphery of the inhibition region in the functional sheet. Functional sheet described in 1.

3. The inhibition region is a perforated portion in the functional sheet. Or 2. Functional sheet described in 1.

4). The inhibition region is a notch portion in the functional sheet. To 3. The functional sheet in any one of.

5). A plurality of the inhibition regions are provided. To 4. The functional sheet in any one of.

6). It contains an absorbent material and a functional component, and when used in a form in which at least a part is in contact with water, the functional component exerts its function by sucking up the water and reacting with the water. A water uptake type functional sheet, wherein the functional sheet is configured to have a long water movement distance with respect to the water uptake height during water uptake. Functional sheet.

7. 5. The functional sheet is a spiral type, Functional sheet described in 1.

8). 1. To 7. A functional sheet kit comprising: the functional sheet according to any one of the above and a container that contains the water for contacting at least a part of the functional sheet.

  The functional sheet according to one aspect of the present invention contains an absorbent material and a functional component, and when used in a form in which at least a part is in contact with water, the water is sucked up and the water is It is a water-sucking type functional sheet in which the functional component exerts its function through a reaction via the water. The functional sheet has an inhibition region in which movement of the water during water suction is inhibited. Examples of the inhibition region include a space region where moisture cannot be transmitted, such as a hole or a notch, and a high-density region where moisture cannot easily pass through, such as a portion compressed by embossing, heat sealing, or the like. Since such a functional sheet has a limited movement of water in the functional sheet as compared with a configuration having no inhibition region, a width is generated in the functional sheet at the time when the reaction via water is started. As a result, the duration of function display as the entire functional sheet is increased.

  The functional sheet kit which concerns on this invention is a kit provided with the said functional sheet | seat and the container which accommodates the said water for making it contact at least one part of the said functional sheet | seat. According to the kit including such a container, the functional sheet can be installed without requiring other tools.

It is a figure which shows the structural example of the functional sheet which concerns on this invention. It is a figure which shows the usage example of the functional sheet and functional sheet kit which concern on this invention. It is a figure which shows the structural example of the carbon dioxide generating sheet | seat applicable to the functional sheet base material of this invention. It is a figure which shows the structural example of the carbon dioxide generating sheet | seat applicable to the functional sheet base material of this invention. It is a figure which shows the structural example of the cyclodextrin containing sheet | seat applicable to the functional sheet base material of this invention. It is a figure which shows the structural example of the cyclodextrin containing sheet | seat applicable to the functional sheet base material of this invention. It is a schematic diagram which shows the web formation apparatus which can be used in manufacture of the functional sheet base material of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

[First embodiment]
With reference to FIG. 1 and FIG. 2, the structure and effect of a functional sheet and a functional sheet kit according to the present invention will be described.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

  With reference to FIG. 1, the structure and effect of a functional sheet according to the present invention will be described.

<Functional sheet>
The functional sheet according to the present invention contains an absorptive material and a functional component, and when used in a form in which at least a part thereof is in contact with water, the functional sheet is sucked up and reacted by the reaction via the water. It is a water uptake-type functional sheet in which the sex component exhibits its function. The functional sheet has an inhibition region in which movement of the water during water suction is inhibited.

  FIG. 1 is a schematic diagram illustrating a non-limiting example of the configuration of a functional sheet according to the present invention. Fig.1 (a) to (d) shows the top view of a functional sheet. FIG.1 (d-1) is a side view of the functional sheet | seat shown by FIG.1 (d). FIG.1 (d-2) is a side view of the modification of the functional sheet | seat shown by FIG.1 (d) and (d-1), and the functional sheet | seat of this modification is shape | molded in three dimensions. .

  FIG. 2 is a schematic side view illustrating an example of usage of the functional sheet and the functional sheet kit according to the present invention. The functional sheet kit which concerns on this invention contains the functional sheet | seat which concerns on this invention, and the container which accommodates the water | moisture content for making at least one part of the said functional sheet contact water. The functional sheet kit may further include a structure for hanging or placing in order to maintain the posture of the functional sheet when used. According to the kit having such a configuration, the functional sheet can be installed without requiring other tools.

  The functional sheet which concerns on this invention has the structure which provided the inhibition area | region where the movement of water was inhibited in the functional sheet. Hereinafter, in this specification, the functional sheet before the inhibition region is provided is also referred to as a functional sheet substrate.

(Functional sheet substrate)
The functional sheet substrate of the present invention contains, for example, a water-absorbing material such as absorbent fibers and one or more functional components, sucks up water, and exhibits a function through a reaction via water. Any sheet that can be used can be used.

  As an example of the functional sheet base material applicable to the present invention, carbonate / bicarbonate and an acid are contained as functional components, and the carbonate / bicarbonate and the acid react through water. Examples thereof include a carbon dioxide generating sheet that generates carbon dioxide. Another example of the functional sheet substrate is a carbonate sheet containing carbonate / bicarbonate as a functional component and reacting with an acid via water to generate carbon dioxide gas. Another example of the functional sheet substrate is an acid sheet that contains acid as a functional component and reacts with carbonate / bicarbonate via water to generate carbon dioxide. Another example of the functional sheet substrate is a cyclodextrin-containing sheet that contains cyclodextrin in which a functional component is included and releases the functional component by a reaction via water. Another example of the functional sheet substrate is a sheet containing a functional component capable of generating carbon dioxide and a cyclodextrin encapsulated with another functional component. Each of the carbon dioxide generating sheet and the cyclodextrin-containing sheet applicable to the functional sheet substrate of the present invention will be described later with items provided.

(Inhibition area)
The functional sheet which concerns on this invention has the structure by which the inhibition area | region was provided in the functional sheet base material. The inhibition area | region in this invention means the area | region where the movement of the water at the time of water siphoning is inhibited relatively compared with the surrounding area | region.

  The inhibition region of one aspect can be a partial space formed in the functional sheet. The inhibition region can be a plurality of holes, notches, etc., as illustrated in FIGS. 1A, 1B, and (d-1), for example, and moisture cannot be transmitted in the region.

  The inhibition region of one embodiment can be a high-density portion having a higher density than the periphery of the inhibition region in the functional sheet. For example, as illustrated in FIG. 1C, the inhibition region can be a portion compressed by embossing, heat sealing, or the like, and moisture hardly passes through the region.

  In addition, in the example shown in FIG. 1 (d-2), the functional sheet is configured such that the water movement distance with respect to the water suction height at the time of water suction is long, and thereby, the functional sheet. The movement of water inside is restricted.

  Since the movement of water in the functional sheet is limited in the functional sheet of the present invention compared to the configuration without the inhibition region, the width of the functional sheet in the time when the reaction via water starts is limited. Occurs, and the duration of function display as the entire functional sheet is prolonged. In order to process in such a shape, a certain level of rigidity is required. In order to design the water movement distance to be long depending on the shape, it conforms to JIS P 8125 paper and paperboard Taber stiffness test method. The Taber stiffness of the measured sheet is preferably 0.8 mN · m or more, more preferably 1.0 mN · m or more, and even more preferably 1.5 mN · m. If it is within the above range, the shape can be maintained because of sufficient rigidity.

(Functional and functional ingredients)
The functional sheet which concerns on this invention contains a functional component, and exhibits a function by reaction through water. The function of the functional sheet according to the present invention can be arbitrarily set according to the application and purpose by selecting the functional component. Any functional component may be used as long as it exhibits a function by a reaction via moisture.

  For example, the functional component may be one that expresses a function by contact with moisture. In addition, the functional component may be a so-called two-agent (multi-agent) reaction type material that comes into contact with one or more other functional components through water, and develops a function by a reaction caused thereby. Good. That is, the functional sheet according to the present invention can contain one or a plurality of functional components.

  As an example of what expresses a function independently by contacting with moisture, for example, a powder exhibiting alkalinity when contacting with moisture can be mentioned. As the powder exhibiting alkalinity when contacted with moisture, alkali inorganic salts such as carbonates or bicarbonates can be used. The alkali inorganic salt can be used without particular limitation as long as it is of a grade that can be used in cosmetics, and no special grade is specified when it is used for applications that do not touch the human body or the like and have no environmental problems. For example, sodium carbonate, sodium bicarbonate, sodium sesquicarbonate, potassium carbonate, potassium bicarbonate, calcium carbonate, magnesium carbonate, magnesium bicarbonate, calcium bicarbonate, or a derivative thereof can be used. Two or more carbonates and / or bicarbonates may be used in combination. In particular, one or both of sodium bicarbonate and sodium carbonate can be preferably used. The alkali inorganic salt is a solid composition, for example, preferably in the form of particles. The alkali inorganic salt may be in a form supported on a support such as silica. The alkali inorganic salt may contain water as crystal water. When water of crystallization is included, the solubility in water increases and the reactivity is improved. However, from the viewpoint of storage stability, the functional sheet containing a powder that exhibits alkalinity when in contact with moisture may not contain moisture that causes alteration such as hydrolysis and reaction with acid. preferable. As the powder exhibiting alkalinity when in contact with moisture, metal oxides such as calcium hydroxide and sodium hydroxide, metal hydroxides, phosphates, silicates and the like can be used. As the powder exhibiting alkalinity when contacted with moisture used in the present invention, particles having an average particle diameter of 5 to 5000 μm are preferable. When the average particle diameter is 5 to 5000 μm, the dropout of the particles is small. When the average particle size is reduced, the dissolution rate increases, and the reaction proceeds as soon as it is wet. On the other hand, when the average particle size is increased, dissolution gradually proceeds when contacted with water. Therefore, there is an effect of extending the duration of function display. In addition, increasing the average particle diameter has the effect of reducing particle dropout.

  Moreover, as another example of what expresses a function independently by dissolving with water, for example, a powder exhibiting acidity when contacted with moisture can be mentioned. As a powder that exhibits acidity when it comes into contact with moisture, it can be used without particular limitation as long as it is an acid of a grade that can be used in cosmetics, and when used in applications that do not touch the human body etc. and do not affect the environment, No special grade is specified. For example, malonic acid, maleic acid, citric acid, malic acid, tartaric acid, succinic acid, fumaric acid, hyaluronic acid, sodium dihydrogen phosphate or a derivative thereof, a substance that is hydrolyzed to generate an acid, and the like can be used. Two or more acids may be used in combination. The acid is a solid composition, and is preferably in the form of particles, for example. Hereinafter, in the present specification, a powder that exhibits acidity when contacted with moisture is also simply referred to as acid particles. The acid may contain water as crystal water. When water of crystallization is included, the solubility in water increases and the reactivity is improved. However, from the viewpoint of storage stability, it is preferable that the acidic layer does not contain moisture that causes alteration, such as hydrolysis and a reaction with carbonate and / or bicarbonate.

  As the acid used in the present invention, particles having an average particle diameter of 5 to 5000 μm are preferable. When the average particle diameter is 5 to 5000 μm, the dropout of the particles is small. When the average particle size is reduced, the dissolution rate increases, and the reaction proceeds as soon as it is wet. On the other hand, when the average particle size is increased, dissolution gradually proceeds when contacted with water. Therefore, there is an effect of extending the duration of function display. In addition, increasing the average particle diameter has the effect of reducing particle dropout.

  Examples of the two-component reaction type functional component include an alkaline substance and an acidic substance. By combining them through water, foaming occurs. Alkaline substances can include alkali metal carbonates, alkali metal bicarbonates, alkaline earth metal carbonates, alkaline earth metal bicarbonates and mixtures thereof, as described above, which are alkaline when contacted with moisture. The powder which exhibits can be used suitably. As acidic substances, acetic acid, adipic acid, ascorbic acid, butyric acid, citric acid, formic acid, fumaric acid, glyconic acid, lactic acid, phosphoric acid, malic acid, oxalic acid, succinic acid, tartaric acid and combinations thereof may be used The above-mentioned powder that exhibits acidity when in contact with moisture can be suitably used. In addition, the functional component is contained in the functional sheet in a form that is at least partially coated with another material, and is released from the coated state by the reaction of water with the other material (release, elution, etc.) By doing so, the function may be exhibited. Examples of such a functional component include a functional component in the form of inclusion in cyclodextrin and a functional component in a form coated with a water-soluble material. Examples of coating with a water-soluble material include coating with a water-soluble material and encapsulation (encapsulation) with a capsule formed of a water-soluble material. Examples of the method for coating the functional material with the water-soluble material include microencapsulation by suspension polymerization method and dropping method, or adding the functional material into a solution in which the water-soluble material is dissolved, and spray drying. The method of doing is mentioned. In the present specification, a functional component that is at least partially covered with a water-soluble material may be simply referred to as a functional component.

  The water-soluble material used in the present invention preferably contains at least one selected from materials generally classified as sugars, water-soluble polymers, gelatin, collagen, collagen peptides, starch, and the like. By using these materials, the functional component of the present invention can be coated so that at least a part thereof is covered.

  The saccharide used in the present invention is not particularly limited. For example, examples of monosaccharides include glucose, fructose, and galactose. Examples of the disaccharide include sucrose, maltose, lactose, cellobiose, trehalose, and palatinose. Examples of the polysaccharide include amylose and cellulose, syrup, tri-warm sugar, and brown sugar. Examples of the sugar alcohol include sorbitol, maltitol, xylitol, and reduced starch syrup. Examples of the oligosaccharide include xylooligosaccharide, fructooligosaccharide, galactooligosaccharide, dairy oligosaccharide, and soybean oligosaccharide.

  Examples of the water-soluble polymer include polyacrylic acid and salts thereof, methacrylic acid and salts thereof, polyacrylic acid and methacrylic acid copolymers, polyethylene glycol, carboxymethyl cellulose, polyvinyl alcohol, polyvinyl pyrrolidone, carbopol, crystalline cellulose, cellulose, Examples include pullulan, casein, pectin, starch, alginates such as sodium alginate, locust bean gum, carrageenan, agar, gum arabic, xanthan gum, hyaluronic acid and its salts, glucosamine and the like.

  As the gelatin, collagen and collagen peptide, gelatin, collagen or collagen peptide derived from cattle, pigs and fish are used.

  Examples of the starch include potato starch, sweet potato starch, tapioca starch, rice starch, corn starch, wheat starch, and barley starch.

  Examples of functional ingredients that can be used in the present invention include foaming ingredients (alkaline substances, acidic substances), wasabi ingredients, mustard ingredients, pepper ingredients, ginger ingredients, lemon ingredients, orange ingredients, grapefruit ingredients, yuzu ingredients, Ume ingredients, Matcha tea ingredients, almond ingredients, natural meat flavors, roses, herbs and other extracts, plant extracts, natural extracts such as tea extracts and fragrances, natural and organic volatiles such as l-menthol ingredients In addition to cosmetic antibacterial agents or fragrances, cosmetic ingredients such as coenzyme Q10 and isoflavones, yeasts that start fermentation upon contact with water, and fungi such as powdered lactic acid bacteria.

  In addition to those described above, functional ingredients include, for example: medicinal ingredients, moisturizers, feel improvers, antioxidants, reducing agents, oxidizing agents, preservatives, antibacterial agents, pH adjusters, UV absorbers, whitening agents Agents, vitamins and derivatives thereof, anti-inflammatory agents, anti-inflammatory agents, hair growth agents, blood circulation promoters, stimulants, hormones, anti-wrinkle agents, anti-aging agents, squeeze agents, cooling agents, warming agents, wounds Healing accelerant, stimulant relieving agent, analgesic agent, cell activator, plant / animal / microbe extract, antipruritic agent, exfoliating / dissolving agent, antiperspirant, refreshing agent, astringent, fragrance, pigment, coloring agent, anti-inflammatory analgesic Agents, antifungal agents, antihistamines, hypnotic sedatives, tranquilizers, antihypertensive agents, antihypertensive diuretics, antibiotics, anesthetics, antibacterial agents, antiepileptic agents, coronary vasodilators, crude drugs, adjuvants, wetting agents , Antidiarrheal, keratin softening release agent, antiseptic disinfectant, fat-soluble substance, deodorant component, etc. The known compounds can be arbitrarily selected depending on the application and purpose.

  Moreover, the material generally called an effect promoter is mentioned as a further example of a functional component. In the functional sheet of the present invention, one or more effect promoters can be blended depending on the application. Examples of the effect promoter include: oily base, surfactant, polymer, thickening / gelling agent, solvent, propellant, inorganic salt, enzyme, nucleic acid, dye, pigment, metal-containing compound, unsaturated monomer Body, polyhydric alcohol, polymer additive, tackifier, oily raw material, UV blocker, antioxidant, liquid matrix, polymer carboxylate, additive, metal soap, and the like.

(Water-absorbing material and water-repellent material)
The functional sheet according to one aspect of the present invention includes a water-absorbing material in an amount of 5% by mass or more and a water-repellent material in an amount of 5% by mass or more based on the total mass of the functional sheet. . When the amount of the water repellent material is increased to 10% by mass, 20% by mass, 30% by mass, etc., the effect of extending the duration of function performance is exhibited. By selecting an appropriate amount of the water repellent material to be blended, the length of the duration can be controlled.

  In this embodiment, the duration of the function can be controlled by appropriately setting the type and mixing ratio based on the physical properties of the water-absorbing material and the water-repellent material.

(Water-absorbing material)
The water-absorbing material is a material having a property of absorbing and retaining moisture. Therefore, the penetration | invasion and penetration | invasion to the inside of the functional sheet of the water which contacted a part of functional sheet can be accelerated | stimulated.

  Examples of the water-absorbing material include natural fibers such as pulp, hemp, cotton, silk, wool, and mineral fibers, regenerated fibers such as rayon, and synthetic fibers such as polylactic acid and nylon. The water absorbing material can be used, for example, in the form of a defibrated chopped fiber. Two or more water-absorbing materials may be used in combination. Further, as the water-absorbing material, an auxiliary agent in the form of particles such as water-absorbing resin particles can be used. Examples of the water-absorbing resin particles include carboxymethyl cellulose, polyvinyl alcohol, and a polymer absorber (SAP).

(Water repellent material)
The water repellent material is a material having a property of repelling water. Therefore, generally, it does not contribute to the penetration and penetration of water into the functional sheet, which is in contact with a part of the functional sheet. According to the configuration of this aspect, the amount and speed of water sucked up by the functional sheet when used in a form in which at least a part thereof is in contact with water is limited by the presence of the water repellent material, The reaction start time via water in can be varied. As a result, when the functional sheet is viewed as a whole, the duration of function display becomes longer.

  Examples of materials that can be used as the water repellent material of the present invention include water repellent fibers and water repellent pulp.

(Water repellent fiber)
As the water repellent fiber used in the present invention, a material in which a chemical having a water repellent function is added to the surface of the synthetic fiber or a material in which a water repellent is kneaded into the synthetic fiber can be used. Moreover, the fiber derived from various organic substances may be sufficient, and the fiber which gave water repellency to the fiber derived from the organic substance which has water absorption may be sufficient.

  As a method for imparting a water-repellent function to the surface of a synthetic fiber, a method of adding a water-repellent agent to an oil agent to be applied in a fiber manufacturing process is known.

  As a method of kneading a water repellent into synthetic fibers, a method of kneading a powdery water repellent into a resin serving as a master batch as a fiber material is known.

  The water repellent added to the oil is not limited as long as it is a known one. For example, polyolefin resin such as fluorine compound, silicone compound, vinyl ester, α, β-unsaturated carboxylic acid, α, β-unsaturated carboxylic acid anhydride, α, β-unsaturated carboxylic acid alkyl ester, paraffin wax, Polymers obtained by polymerizing monomers such as microcrystalline wax, polyethylene wax and maleated petroleum resin, monomers such as acrylamide and methacrylamide, and acrylic polymers with ionic monomers, hydrophobic monomers, hydrophilic monomers and branched structures Known are polyacrylamide polymers, styrene acrylic resins, and the like that are copolymerized with monomers that can be imparted, polyfunctional monomers that can impart a crosslinked structure, and the like.

  As fibers derived from organic substances having water repellency, fibers such as cotton and wool that have not been subjected to a degreasing treatment are known.

(Water repellent pulp)
As a material imparted with water repellency by hydrophilic fibers derived from organic matter, the following water-repellent pulp can be used. Not only pulp, but also other hydrophilic fibers such as rayon and kenaf can be imparted with water repellency.

The water-repellent pulp used in the present invention is a state in which the pulp fiber and the water-repellent agent are directly or indirectly firmly bonded, and when the mechanical share is added, the pulp fiber and the water-repellent agent are difficult to separate, In addition, the pulp fiber and the water repellent are not separated when contacted with water, and specifically, the following (1) is satisfied:
(1) In the water absorption test specified in JIS L1907: 2010 standard, the sedimentation start time is 30 seconds or more.
More specifically, the measurement is performed according to a water absorption test (precipitation method) defined in JIS L1907: 2010 standard. After the sample floats in a water bath containing 20 ° C. ± 2 ° C., the time from when the sample gets wet and begins to settle in water (settling start time) is measured.
In the present invention, the water-repellent pulp has a sedimentation start time of 30 seconds or longer, preferably 60 seconds or longer.
By containing this water-repellent pulp, the water absorption rate can be controlled.

The water-repellent pulp preferably satisfies at least one of the following (2) to (5):
(2) The pulp water retention amount in the water retention test is 15 g or less.
(3) The amount of liquid flow in the liquid flow test is 35 g or more.
(4) Under microscopic observation, the swelling rate when water is dropped is 20% or less.
(5) The water absorption in the tea bag test is 10 (g / g) or less.
Hereinafter, the above (2) to (5) will be described in detail.

(2) Pulp water retention in the water retention test is 15 g or less This test measures how much water the pulp was able to retain out of 40 cc (40 g) of water. The greater the number, the higher the water absorption. Specifically, it is measured by the following method.
An acrylic bottom having an inner diameter that closely adheres to an acrylic frame (hollow square column shape) having a height and width of 10 cm and a height of 6 cm is installed. The degree of adhesion should be such that water slightly oozes out when water is put into the frame where the bottom is installed.
Separately, weighed filter paper (filter paper sufficient to absorb 40 cc of water) is placed under the frame with the bottom. In this frame, 2 g of pulp fibers are uniformly put, 40 cc of water is put into the whole, and after 1 minute, 700 gf of an acrylic weight having the same dimensions as the inner diameter of the frame is placed, and a load is gently applied to the pulp fibers. One minute later, the mass of the filter paper under the frame is measured, the amount of water oozing out from the frame is measured, and the difference from 40 g of the introduced water is defined as the pulp water retention amount (g). That is, the pulp water retention amount is represented by the following formula (a).
Pulp water retention amount (g) = 40 (g)-amount of exuded water (g) Formula (a)
In addition, the amount of the exuded water is measured from the difference between the mass of the filter paper measured before the test and the mass of the filter paper absorbed after the test.
The water retention amount of the water repellent pulp is preferably 12.5 g or less, more preferably 10 g or less, still more preferably 7.5 g or less, and even more preferably 5 g or less.

(3) The amount of liquid flow in the liquid flow test is 35 g or more. On the metal mesh, 5 drain holes with a hole diameter of 3 mm are placed on the bottom and an acrylic cylinder with an inner diameter of 3 cm in a cross shape is placed. After compressing to 4 cm (density 0.035 g / cm ³ ), 50 cc of water is added at once, and the amount of discharged water is measured to obtain the liquid flow rate.
It means that the greater the liquid flow rate, the lower the water absorption and the better the water repellency.
The liquid flow amount of the water repellent pulp is preferably 37.5 g or more, more preferably 40 g or more, still more preferably 42.5 g or more, and still more preferably 45 g or more.

(4) Under microscopic observation, the swelling rate when water is dropped is 20% or less Under the microscope, the swelling rate when water is dropped on the water-repellent pulp is 20% or less. The swelling rate is preferably 15% or less, more preferably 10% or less, still more preferably 5% or less, still more preferably 3% or less, and still more preferably 0% or less.
The swelling rate is measured by the following method. Specifically, 3 to 5 mg of pulp fiber is placed on a preparation and about 0.1 ml of water is poured with a dropper. After leaving it to stand for about 5 minutes, the preparation is tilted, and the moisture not absorbed by the pulp fiber is removed by Kimwipe or the like. The fiber diameter of the pulp fiber is measured from the microphotographs before and after dropping water, and the swelling ratio is calculated by the following formula.
Swell ratio = {Fiber diameter of fiber after dripping water (width dimension) −Fiber diameter of fiber before dripping water (width dimension)} ÷ Fiber diameter of fiber before dripping water (width dimension) × 100 (% )
Here, the state in which the swelling rate is 0% means that water and pulp fibers do not conform, the water remains spherical due to surface tension, and the fibers are placed on the water droplets, or spherical water droplets are present on the fibers. It means the state of adhering.

(5) Water absorption in tea bag test is 10 (g / g) or less Water absorption when water-repellent pulp is used in tea bag test is preferably 10 (g / g) or less, more preferably 7 0.5 (g / g) or less, more preferably 5 (g / g) or less, still more preferably 3 (g / g) or less.
The water absorption is measured by the following tea bag test. Specifically, the pulp fiber is put in a tea bag (9.5 cm × 7 cm, non-woven fabric made of polyester as a main fiber material, Tokiwa tea bag M, manufactured by Tokiwa Kogyo Co., Ltd.), and a string is attached to the tip of the tea bag. Tie a weight (500 g). Place the weighted tea bag in a beaker filled with water. Add water to the height where the entire tea bag is completely submerged. After soaking the tea bag for 5 minutes, remove it from the water and hang it in the air for 5 minutes to drain the water. The mass of the tea bag (with pulp fibers) after draining is measured, and the water absorption is calculated by the following formula. Here, since the amount of water absorption into the tea bag itself is very small, there is no need to consider it.
Water absorption (g / g) = (mass of tea bag with pulp fiber after draining−mass of tea bag with pulp fiber before being immersed in water) ÷ mass of pulp fiber before test Here, the water absorption is 1 time. The state means that the water and the pulp fiber are not compatible, the water remains a sphere due to the surface tension, and the fiber is placed on the water droplet, or a spherical water droplet is attached to the fiber.

In the present invention, the water-repellent pulp preferably satisfies the above (1), and further satisfies at least one of (2) to (5).
The water-repellent pulp preferably satisfies at least (1), more preferably satisfies at least (1) and (2), more preferably satisfies at least (1), (2) and (3), It is even more preferable to satisfy all of 1) to (5).

The water-repellent pulp contains pulp fibers and may be directly or indirectly treated with a water-repellent agent, and may have water repellency by selecting a raw material of pulp fibers. . Pulp fiber is a fiber having an irregularly bent shape and a crimped form, and a fiber having a hollow tubular form having pores occupied by protoplasms of plant cells. is there. Use of water-repellent pulp is preferable from the viewpoint of obtaining excellent sound absorption and further reducing the environmental load.
Pulp fibers include wood pulp (conifer pulp, hardwood pulp), rug pulp, linter pulp, linen pulp, non-wood pulp such as birch, coconut husk and cocoon pulp, pulp such as waste paper pulp; And fluff pulp obtained by fibrillating raw pulp into fibers by mechanical treatment.
The raw material pulp is preferably a thin fiber pulp from the viewpoint of sound absorption, but if the density is high, the sound absorption may be inferior. From the viewpoint of easily obtaining a nonwoven fabric excellent in water repellency, it is also preferable to use wood having a high alkane content such as eucalyptus or wood having a high paraffin content as the raw material pulp.

In the present invention, the water repellent pulp may be one obtained by treating the above-described fiber pulp with a water repellent. The water repellent is not particularly limited. For example, various waxes; higher fatty acid derivatives; synthetic resins such as polyolefin resins, polyamide resins, and polyamine resins; fluorine resins such as polytetrafluoroethylene and polychlorotrifluoroethylene; Examples thereof include silicone resins such as polymethylhydrogensiloxane and polydimethylsiloxane, chromate salts, zirconium salts, and the like. In addition, rosin sizing agents, synthetic sizing agents, petroleum resin sizing agents, styrene sizing agents, neutral rosin sizing agents, alkenyl succinic anhydrides, alkyl ketene dimers, etc. can also be used as water repellents in the present invention. is there.
Specific examples of water repellents include plant waxes such as carnauba wax, cotton wax, wood wax, and rice wax, animal waxes such as beeswax and lanolin, wax extracted from montan wax, ozokerite, ceresin, and oil shell. And mineral waxes such as paraffin, microcrystalline, and petrolatum. In addition to these natural waxes, synthetic hydrocarbon waxes such as Fischer-Tropsch wax and polyethylene wax, higher fatty acid amides such as 12-hydroxystearic acid amide, stearic acid amide, phthalic anhydride imide, and chlorinated hydrocarbons, esters Synthetic waxes such as ketones and ethers can also be used. Furthermore, a crystalline polymer having a long alkyl group in the side chain can be mentioned.

  The content of the water-repellent pulp is appropriately changed depending on the required duration of the functional sheet, but in order to extend the extension time, it is 5% by mass or more based on the total mass of the functional sheet. It is preferably 10% by mass or more, more preferably 25% by mass or more, and particularly preferably 35% by mass or more. Moreover, it is preferable that content of water-repellent pulp is 95 mass% or less. By setting the content of the water-repellent pulp within the above range, the water repellency of the fiber-reinforced plastic molded sheet can be effectively increased. In addition, the strength of the molded body can be increased.

  The mass average fiber length of the water repellent pulp is preferably from 0.1 mm to 15 mm, more preferably from 0.5 mm to 10 mm, and further preferably from 1 mm to 5 mm. By setting the fiber length of the water-repellent pulp within the above range, it is possible to suppress the water-repellent pulp from dropping from the fiber-reinforced plastic molded sheet, and the water-repellent pulp molded sheet is effective in water repellency. Can be increased. Moreover, the molded object excellent in intensity | strength can be formed from the sheet | seat for fiber reinforced plastics molded objects. In the present specification, the mass average fiber length is an average value of the fiber lengths measured for 100 fibers.

Below, the example of the functional sheet base material applicable to this invention is demonstrated.
I. First example of functional sheet substrate [carbon dioxide generating sheet]
Hereinafter, with reference to FIG. 3 and FIG. 4, a carbon dioxide generating sheet applicable as a functional sheet substrate constituting the functional sheet of the present invention will be described.

[First embodiment]
The carbon dioxide generating sheet that can be applied to the functional sheet substrate of the present invention is a laminate comprising a carbonate layer and an acid layer, and comprises a water absorbent sheet between the carbonate layer and the acid layer, The carbonate layer and the acid layer are obtained by disposing a carbonate particle or a mixture of acid particles and a heat-fusible resin on the surface of the water-absorbent sheet and melting the heat-fusible resin by heat. It is characterized by the above. In the carbonate layer, the carbonate particles are fixed in a state where a part thereof is covered with the heat-fusible resin. Similarly, in the acid layer, the acid particles are fixed in a state where a part thereof is covered with the heat-fusible resin. The carbon dioxide generating sheet of the present invention is manufactured by a dry method in order to prevent a reaction between a carbonate and an acid during the manufacturing process.

(Layer structure and effects)
FIG. 3 is a diagram illustrating the configuration of the carbon dioxide generating sheet according to the first aspect of the present invention for the purpose of illustration and not for the purpose of limitation. In the drawings, the same reference numerals indicate the same components. For the same component, a duplicate description may be omitted.

  The carbon dioxide generating sheet according to the first aspect of the present invention shown in FIG. 3A includes a water absorbent sheet 300, a carbonate layer 130, a water absorbent sheet 300, an acid layer 230, and a water absorbent sheet 300. , In order. The carbonate layer 130 is a layer formed through a step of disposing a mixture of the carbonate particles 13 and the heat-fusible resin 16 on the surface of the water-absorbent sheet 300 and thermally melting the heat-fusible resin 16. . The acid layer 230 is a layer formed through a step of disposing the mixture of the carbonate particles 23 and the heat-fusible resin 16 on the surface of the water-absorbent sheet 300 and thermally melting the heat-fusible resin 16. is there.

  In the configuration of FIG. 3A, the carbonate particles 13 are fixed in the carbonate layer 130 in a state in which a part thereof is covered with the heat-fusible resin. Therefore, the carbonate particles 13 are unlikely to fall off from the carbon dioxide generating sheet, and moisture can come into contact with the carbonate when the carbon dioxide generating sheet is used. Since the heat-fusible resin and the carbonate particles are uniformly dispersed, the carbonate particles can be arranged uniformly in the plane.

  Similarly, in the acid layer 230, the acid particles 23 are fixed in a state where a part thereof is covered with the heat-fusible resin. Therefore, the acid particles 23 are unlikely to fall off from the carbon dioxide generating sheet, and moisture can come into contact with the acid when the carbon dioxide generating sheet is used. Since the heat-fusible resin and the acid particles are uniformly dispersed, the acid particles can be uniformly arranged in the plane.

  Further, since the water absorbent sheet 300 is provided so as to cover the upper surfaces of the carbonate layer 130 and the acid layer 230, the possibility of carbonate or acid powder falling from the carbon dioxide generating sheet can be further reduced. it can. The water absorbent sheet 300 corresponding to the outer layer of the carbon dioxide generating sheet is not an essential element in the present invention.

  The carbon dioxide generating sheet shown in FIG. 3B is one of the water-absorbing sheets 300 provided so as to cover the upper surfaces of the carbonate layer 130 and the acid layer 230 in the configuration shown in FIG. The structure replaced with the film 400 with relatively low air permeability is shown. In the configuration having the low-breathable film 400 on one side, in addition to the same effects as the configuration shown in FIG. 3A, the carbon dioxide gas generated during use is prevented or suppressed from being released from the surface on the film arrangement side. The effect that can be produced. Therefore, by applying the surface opposite to the surface on the film placement side to the skin, it becomes possible to apply the carbon dioxide gas to the skin in a concentrated manner and / or for a long time.

  Further, for example, one or both of the carbonate layer 130 and the acid layer 230 may further include a water absorbing material.

  The carbon dioxide generating sheet shown in FIG. 3C is a laminate of a water absorbent sheet 300, a carbonate layer 100 containing a water absorbent material, a water absorbent sheet 300, an acid layer 230, and a water absorbent sheet 300 in this order. The configuration is as follows. In the carbonate layer 100 containing a water-absorbing material, in addition to the mixture of the carbonate particles 13 and the heat-fusible resin 16, the absorptive material is disposed on the surface of the water-absorbing sheet 300, and the heat-fusible resin 16 is heated. It is a layer formed through a melting step. In the carbonate layer 100 containing a water-absorbing material, the carbonate particles 13 and the absorbent material are fixed in a state of being partially covered by the heat-fusible resin 16.

  The carbon dioxide generating sheet shown in FIG. 3 (d) is relatively in comparison with the water absorbent sheet 300, the acid layer 200 containing the water absorbent material, the water absorbent sheet 300, the carbonate layer 130, and the water absorbent sheet 300. And a film 400 having low air permeability are sequentially laminated. In the acid layer 200 containing the water-absorbing material, in addition to the mixture of the acid particles 23 and the heat-sealable resin 16, the absorptive material is disposed on the surface of the water-absorbent sheet 300 to heat-melt the heat-sealable resin 16. It is a layer formed through the process. In the acid layer 200 including the water-absorbing material, the acid particles 23 and the absorbent material are fixed in a state where they are partially covered with the heat-fusible resin 16.

  In FIG.3 (c) and FIG.3 (d), although the absorptive material was mix | blended with only one of a carbonate layer and an acid layer, you may mix | blend an absorptive material with both layers. As described above, the configuration in which the water-absorbing material is further added to the carbonate layer and / or the acid layer has the same effect as the configuration shown in FIG. 3 (a) or FIG. Can be dispersed in the thickness direction of the layer due to the presence of the water-absorbing material. Further, the water-absorbing material can gradually permeate moisture. Therefore, when using the carbon dioxide gas generating sheet, the time for starting the reaction between the carbonate and the acid can be widened. As a result, the carbon dioxide gas generating sheet as a whole has a long duration. can do.

  In the layer containing the water-absorbing material, especially when the water-absorbing material is fibrous, the carbonate or acid is easily maintained in the layer due to the presence of the water-absorbing material. Further, the shape of the carbon dioxide generating sheet is easily maintained when the carbonate layer and / or the acid layer contains a water-absorbing material. Therefore, it is possible to improve the yield of carbonate and / or acid during the production, storage and use of the carbon dioxide generating sheet, and prevent powder falling even when subjected to deformation such as folding. be able to. Therefore, loss of the carbon dioxide gas generating agent is prevented, leading to cost reduction. Further, the cost can be reduced by selecting the water-absorbing material itself.

  The configuration of the carbon dioxide generating sheet according to the first aspect of the present invention has been described above with reference to FIGS. However, these are merely examples, and other configurations and combinations of the configurations are also included in the scope of the present invention.

  For example, each of the carbon dioxide generating sheets shown in FIGS. 3A to 3D includes a plurality of layers of the water absorbent sheet 300, but these layers are not necessarily made of the same material.

  For example, the water-absorbent sheet 300 corresponding to the intermediate layer of the carbon dioxide generating sheet may be a water-absorbent sheet 500 (not shown) that has high water retention and can gradually release water inside. In the configuration in which the water absorbent sheet 500 having such a high water retention property is disposed between the carbonate layer 130 and the acid layer 230, moisture such as skin lotion applied to one surface during use is gradually added over time. Can penetrate into the other surface. Therefore, the reaction start time of the carbonate and the acid can be widened, and the carbon dioxide gas generation as the whole carbon dioxide gas generating sheet can be maintained. The outer layer water-absorbent sheet 300 may also be the same material as the water-absorbent sheet 500 having high water retention used for the intermediate layer.

(Carbonate layer)
The carbonate layer is a layer containing carbonate and / or bicarbonate.

  As carbonate or bicarbonate, when used as a cosmetic, any grade that can be used in cosmetics can be used without any particular limitation. When used for other purposes, no particular grade is specified. For example, sodium carbonate, sodium bicarbonate, sodium sesquicarbonate, potassium carbonate, potassium bicarbonate, calcium carbonate, magnesium carbonate, magnesium bicarbonate, calcium bicarbonate, or a derivative thereof can be used. Two or more carbonates and / or bicarbonates may be used in combination. The carbonate and / or bicarbonate is a solid composition, for example, preferably in the form of particles. The carbonate and / or bicarbonate may be in a form supported on a support such as silica. The carbonate and / or bicarbonate may contain water as crystal water. When water of crystallization is included, the solubility in water increases and the reactivity is improved. However, from the viewpoint of storage stability, it is preferable that the carbonate layer does not contain water that causes alteration such as hydrolysis and reaction with an acid. As the carbonate or bicarbonate used in the present invention, particles having an average particle diameter of 5 to 5000 μm are preferable. When the average particle size is 5 to 5000 μm, the dropout of the particles is small, and a good feeling of use can be obtained with an appropriate granular feeling.

  The carbonate layer may further contain a heat-fusible resin in addition to the carbonate and / or bicarbonate particles. In this case, the carbonate and / or bicarbonate particles are fixed in the carbonate layer in a state where a part thereof is covered with the heat-fusible resin. Such a carbonate layer is heated by heat by, for example, disposing a mixture of carbonate and / or bicarbonate particles and a heat-fusible resin on the surface of another layer constituting the carbon dioxide generating sheet. It can be formed by melting a fusible resin.

(Acid layer)
The acid layer is a layer containing a solid acid.

When used as a cosmetic, the acid can be used without particular limitation as long as it is of a grade that can be used in cosmetics, and no special grade is specified when used for other purposes. For example, malonic acid, maleic acid, citric acid, malic acid, tartaric acid, succinic acid, fumaric acid, hyaluronic acid, sodium dihydrogen phosphate or a derivative thereof, a substance that is hydrolyzed to generate an acid, and the like can be used. Two or more acids may be used in combination. The acid is a solid composition, and is preferably in the form of particles, for example. The acid may contain water as crystal water. When water of crystallization is included, the solubility in water increases and the reactivity is improved. However, from the viewpoint of storage stability, it is preferable that the acid layer does not contain water that causes alteration such as hydrolysis and reaction with carbonate. As the acid used in the present invention, particles having an average particle diameter of 5 to 5000 μm are preferable. When the average particle size is 5 to 5000 μm, the dropout of the particles is small, and a good feeling of use can be obtained with an appropriate granular feeling. When the average particle size is reduced, the dissolution rate is increased, and the reaction proceeds immediately after being wetted with water, so that the amount of CO ₂ gas generated in the initial stage of use is increased. Moreover, when using it for skin, a granular feeling can be reduced. On the other hand, increasing the average particle size has the effect of extending the duration of carbon dioxide gas generation because dissolution gradually proceeds when contacted with water. In addition, increasing the average particle diameter has the effect of reducing particle dropout.

  The acid layer may further contain a heat-fusible resin in addition to the acid particles. In this case, the acid particles are fixed in a state where a part thereof is covered with the heat-fusible resin in the acid layer. Such an acid layer is formed by, for example, arranging a mixture of acid particles and a heat-fusible resin on the surface of one of the other layers constituting the carbon dioxide generating sheet, and heat-fusing the resin by heat. It can be formed by melting.

(Heat-fusion resin)
The heat-fusible resin in the present invention plays a role of a binder that fixes carbonate particles or acid particles in a state where a part of the carbonate particles or acid particles is coated in the carbonate layer and / or acid layer. The heat-fusible resin is, for example, uniformly mixed with carbonate particles or acid particles, placed on the surface of one of the other layers constituting the carbon dioxide generating sheet, heated and melted, In the salt layer and / or the acid layer, the carbonate particles or the acid particles can be fixed in a state of covering a part thereof. The heat-fusible resin can be in the form of particles, fibers, or any other form. The heat-fusible resin is preferably in the form of particles from the viewpoint of uniform mixing with carbonate particles or acid particles in the layer forming step. Moreover, it is desirable that the heat-fusible resin is fibrous from the viewpoint of joining a plurality of carbonate particles or a plurality of acid particles. The heat-fusible resin can be in the form of a shortcut fiber, for example. Various types of heat-fusible resins may be used in combination.

  Examples of the heat-fusible resin include low-density polyethylene (PE) having a melting point of 95 ° C to 130 ° C, high-density polyethylene having a melting point of 120 ° C to 140 ° C, and a homopolymer or block copolymer having a melting point of 160 ° C to 165 ° C. Polypropylene (PP) composed of a polypropylene having a melting point of 135 ° C. to 150 ° C., low melting point polyethylene terephthalate (PET) having a melting point of 110 to 190 ° C., low melting point polyamide having a melting point of 100 to 130 ° C., melting point of 110 ° C. Examples include low-melting polylactic acid having a melting point of ˜150 ° C. and polybutylene succinate having a melting point of 115 ° C. A thermoplastic resin having a melting point exceeding 110 ° C. is preferably used in the present invention. Two or more kinds of heat-fusible resins may be used in combination.

  When the heat-fusible resin is fibrous, the fineness of the heat-fusible fiber is preferably 1 dtex to 120 dtex, and more preferably 1 dtex to 85 dtex. Moreover, it is preferable that the average fiber length of a heat-fusible fiber is 1-100 mm, It is more preferable that it is 1-60 mm, It is further more preferable that it is 2-30 mm. When the fineness and average fiber length of the heat-fusible fiber are within the above ranges, the web layer can be easily formed, and a uniform binding force and dispersion state can be easily obtained.

  When the heat-fusible resin is in the form of particles, the average particle diameter of the heat-fusible particles is preferably 1 to 1,000 μm, and more preferably 10 to 800 μm. The average particle size of the heat-fusible resin can be appropriately selected within a range in which the carbonate and acid particles to be used are not completely covered.

(Heat-fusion resin composite)
The above heat-fusible resin may be a composite of two or more components. For example, core-sheath fibers in which resins having different melting points are combined, side-by-side fibers using different resins in a cross section perpendicular to the longitudinal direction, and core-shell particles having a core and a shell are included. Among these, core-sheath fibers are preferably used because different types of resins can be easily combined.

  As the core-sheath fiber, a core-sheath fiber whose melting point of the sheath part is lower than the melting point of the core part is preferably used. For example, a PP / PE composite core-sheath fiber provided with a core part made of polypropylene fiber (melting point 160 ° C.) and a sheath part made of polyethylene (melting point 130 ° C.) formed on the outer periphery of the core part can be mentioned.

  Other core sheath fibers include, for example, PET / low melting point PET composite core sheath fiber, high density polyethylene / low density polyethylene composite core sheath fiber, polyethylene / low melting point PET composite core sheath fiber, polyamide / low melting point polyamide composite. Examples include core-sheath fibers, polylactic acid / low melting point polylactic acid composite core-sheath fibers, and polylactic acid / polybutylene succinate composite core-sheath fibers.

  Many common core-sheath fibers have a melting point of the sheath part exceeding 110 ° C., and such core-sheath fibers are preferably used in the present invention.

  When the core-sheath fiber having a lower melting point of the sheath part than the melting point of the core part is used for the carbon dioxide generating sheet of the present invention, when heated to a temperature that is equal to or higher than the melting point of the sheath part and lower than the melting point of the core part, The resin in the sheath part melts and the resin in the core part maintains its shape. As a result, the molten resin in the sheath part retains carbonate and / or bicarbonate in the carbonate layer and / or retains acid in the acid layer, and the water-absorbing material and the fibers in the core part. The effect which binds the structural components of the structure comprised by this is shown. Therefore, the carbon dioxide generating sheet according to the present invention can provide a sheet strength while ensuring a void in the sheet, and can provide a soft and excellent sheet.

  The composite of two or more components as described above can provide heat-fusibility due to the presence of the heat-fusible resin exposed to the outside, and can function as a binder. Therefore, these composites can be blended as a heat-fusible resin in the present invention.

(Water-absorbing material)
In the first aspect of the present invention, a water-absorbing material may be contained in at least one of the carbonate layer and the acid layer. Examples of the water-absorbing material include natural fibers such as pulp, hemp, cotton, silk, wool, and mineral fibers, regenerated fibers such as rayon, and synthetic fibers such as polylactic acid and nylon. The water absorbing material can be used, for example, in the form of a defibrated chopped fiber. Two or more water-absorbing materials may be used in combination. Further, as the water-absorbing material, an auxiliary agent in the form of particles such as water-absorbing resin particles can be used. Examples of the water-absorbing resin particles include carboxymethyl cellulose, polyvinyl alcohol, and a polymer absorber (SAP).

  The carbonate or acid can be present dispersed in the layer due to the presence of the water-absorbing material. In addition, the absorbent material of the present invention can absorb and retain water and carbonates or acids dissolved in water when using the carbon dioxide generating sheet, while being able to release slowly. Moisture can be gradually infiltrated in the carbon dioxide generating sheet. Therefore, when using the carbon dioxide gas generating sheet, the time for starting the reaction between the carbonate and the acid can be widened. As a result, the carbon dioxide gas generating sheet as a whole has a long duration. can do.

(Effect promoter)
One or a plurality of effect accelerators can be blended in the carbon dioxide gas generating sheet of the present invention depending on the application.

  Examples of the effect promoter include: oily base, moisturizer, touch improver, surfactant, polymer, thickener / gelator, solvent, propellant, antioxidant, reducing agent, oxidizing agent, preservative , Antibacterial agents, chelating agents, pH adjusters, acids, alkalis, powders, inorganic salts, UV absorbers, whitening agents, vitamins and their derivatives, anti-inflammatory agents, anti-inflammatory agents, hair-growth agents, blood circulation promoters, Stimulants, hormones, anti-wrinkle agents, anti-aging agents, squeeze agents, cooling sensations, warming sensations, wound healing promoters, stimulation relieving agents, analgesics, cell activators, plant / animal / microbe extracts, antipruritics , Exfoliating / dissolving agent, antiperspirant, refreshing agent, astringent, enzyme, nucleic acid, fragrance, pigment, colorant, dye, pigment, metal-containing compound, unsaturated monomer, polyhydric alcohol, polymer additive Anti-inflammatory analgesic, antifungal, antihistamine, hypnotic sedative, tranquilizer, antihypertensive Antihypertensive diuretics, antibiotics, anesthetics, antibacterial substances, antiepileptics, coronary vasodilators, herbal medicines, adjuvants, wetting agents, thickeners, tackifiers, antipruritics, keratin softening release agents, oily Examples include raw materials, ultraviolet blocking agents, antiseptics, antioxidants, liquid matrices, fat-soluble substances, polymeric carboxylates, additives, metal soaps, and the like.

  An effect promoter can be mix | blended with one or both of a carbonate layer and an acid layer, for example. It can also be added to other layers.

(Water absorbent sheet)
As the water-absorbent sheet 300, any sheet can be used among a sheet having a property of passing moisture (water permeability) and a sheet having a property of absorbing moisture (water absorption). As a sheet | seat which has the property (water permeability) which lets a water pass, it is only necessary to let water pass through and there is no limitation. As the sheet having the property of absorbing moisture (water absorption), a sheet that can take in and retain moisture and release the moisture inside can be used. That is, it can be said that the sheet | seat which has the property (water absorption) which absorbs the water | moisture content which can be applied to this invention is a kind of sheet | seat which has the property (water permeability) which lets water pass. The water-absorbent sheet 300 has a water absorption rate of 60 seconds or less, more preferably 30 seconds or less, measured according to the sedimentation rate measurement method defined in JIS L1907 standard. Alternatively, the water absorption (or water passage) speed by the dropping method defined in JIS L1907 standard is 60 seconds or less, and more preferably 30 seconds or less. The lower the water absorption, the faster the water-absorbing sheet 300 allows water to pass through, and in the carbon dioxide generating sheet using this, the reaction between carbonate and acid proceeds rapidly, and carbon dioxide is generated intensively in a short time. Can be made. Moreover, since the water absorption sheet 300 can delay the start of reaction of carbonate and an acid, so that water absorption (water | moisture retention power) is high, the duration of generation | occurrence | production of the carbon dioxide gas in the whole carbon dioxide generation sheet | seat Can be lengthened. The water absorbent sheet 300 can be, for example, a non-woven fabric, a cloth, or another sheet having a mesh structure, and can be a special non-woven fabric such as Warif (registered trademark), for example.

  As the water-absorbing sheet 500 having high water retention, any sheet having a property capable of gradually releasing moisture passing through the inside or moisture absorbed inside over time can be used.

  In addition, for the purpose of imparting design properties and improving the wiping property when used as a cleaning article, the surface of the water-absorbent sheet serving as the outer layer of the carbon dioxide generating sheet may be subjected to surface treatment such as unevenness.

  By using a thick sheet or a low-density sheet as the water-absorbing sheet used on the surface, there is an effect of reducing the graininess appearing on the outer surface of the carbon dioxide generating sheet. On the other hand, if a thin sheet or a sheet with high water permeability and air permeability is used, it is difficult to prevent moisture from entering from the surface of the carbon dioxide generating sheet and releasing the generated carbon dioxide to the outside. Easy to get. The water absorbent sheet is appropriately selected according to the use and purpose.

(the film)
The film 400 has such flexibility that the carbon dioxide generating sheet can be applied along the skin or the curved surface when in use, and the other layer of the carbon dioxide generating sheet, in particular, the air-absorbing sheet 300 is air permeable. Any film having a relatively low property can be used.

The lower the air permeability of the film, the higher the effect of preventing / inhibiting the release of the carbon dioxide gas generated when the carbon dioxide generating sheet is used from the film arrangement side surface. Therefore, it is possible to apply carbon dioxide gas intensively and / or for a long time to the skin or application site by applying the surface opposite to the film placement side to the skin or the site to be cleaned. Has the effect of becoming. On the other hand, if the air permeability is low, stuffiness during use tends to occur, so the film may have an appropriate air permeability. For example, the air permeability measured by the “fabric and knitted fabric test method” defined in Japanese Industrial Standard JIS L1096: 2010 is preferably 200 cm ³ / cm ² / s or less, more preferably 150 cm ³ / cm ² / s. s or less films can be used. This air permeability is the amount of air permeating the film per unit area and unit time when a predetermined pressure is applied, and the larger the value, the higher the air permeability. By using the other layer of the carbon dioxide generating sheet, in particular, a film having a relatively low air permeability as compared with the water absorbent sheet, directivity can be given to the permeation of carbon dioxide.

  Examples of the film include resin films such as polyester, polyvinyl alcohol, polyethylene, polypropylene, and a composite film of polyethylene and polypropylene.

(Content ratio of each component)
From the viewpoint of cost, the carbonate and acid in the carbon dioxide generating sheet are preferably used in chemical equivalents, but considering the effect on the skin, the acid is over-blended and the pH after reaction is about 5 It can also be adjusted so that Moreover, the preferable compounding ratio of carbonate and acid may differ depending on the difference in solubility due to factors such as the particle diameter of carbonate and acid, and can be adjusted as appropriate.

  In each of the carbonate layer and the acid layer, the content ratio (mass basis) of the carbonate or acid and the heat-fusible resin can be, for example, 2/98 to 98/2, and 5/95 to 95 / 5 and can be 10/90 to 90/10. When the ratio is in the above range, the carbonate and acid in the in-plane direction of the carbon dioxide generating sheet can be blended uniformly, and powder falling can be suppressed.

  When each of the carbonate layer and the acid layer further contains a water-absorbing material, the content ratio (mass basis) of the carbonate or acid, the heat-fusible resin, and the absorbent material is, for example, 2/49 / 49-96 / 2/2, 6/47 / 47-94 / 3/3, and 10/45 / 45-90 / 5/5. When the ratio is in the above range, the carbonate and the acid can be uniformly disposed in the in-plane direction of the carbon dioxide generating sheet, and can be dispersed in the layer due to the presence of the water-absorbing material. it can. In addition, the absorbent material of the present invention can absorb and retain water and carbonates or acids dissolved in water when using the carbon dioxide generating sheet, while being able to release slowly. Moisture can be gradually infiltrated in the carbon dioxide generating sheet. Therefore, when using the carbon dioxide gas generating sheet, the time for starting the reaction between the carbonate and the acid can be widened. As a result, the carbon dioxide gas generating sheet as a whole has a long duration. can do.

  In addition, an appropriate amount of one or more effect promoters can be blended in one or more of the carbonate layer, acid layer, and other layers.

(Basis weight)
The basis weight of the carbon dioxide generating sheet can be appropriately set according to the application. For example, it is preferably 30 to 300 g / m ² .

<Method for producing carbon dioxide generating sheet>
As a method for producing a carbon dioxide generating sheet according to the first aspect of the present invention, for example, heat fusion such as acid particles or carbonate particles and polyethylene (PE), for example, on a carrier sheet for conveying a web layer A homogeneous mixture with a conductive resin is disposed, and a web layer to be a water-absorbent sheet is laminated thereon, and further, a carbonate particle or acid particle and a heat-fusible resin such as polyethylene (PE). There is a method in which a uniform mixture is disposed, a carrier sheet is further disposed thereon, and the heat-fusible resin is melted by heat treatment and bonded. At this time, the water-absorbent sheet of the present invention may be used for the carrier sheet to obtain a carbon dioxide generating sheet having the layer configuration according to the first aspect of the present invention. Moreover, even if the carbon dioxide generating sheet having the layer structure according to the first aspect of the present invention is obtained by using an arbitrary film having a relatively low air permeability as compared with other layers as one of the carrier sheets. Good. The carrier sheet is not essential in the present invention, and may be peeled off from the formed laminate after the heat treatment. In order to prevent the reaction between the carbonate and the acid during production, in the present invention, these laminations are performed by a dry method. As another embodiment, for example, there is a method using a web forming apparatus that employs an airlaid method.

(Manufacturing method of carbon dioxide generating sheet using airlaid method)
The method for producing a carbon dioxide generating sheet of this embodiment that employs the airlaid method includes a defibrating step, a mixing step, a web forming step, and a binding step.

(Defibration process)
The defibrating step is a step of defibrating a shortcut fiber by defibrating a heat-fusible resin in the form of a shortcut fiber with an air flow.

  In the defibrating method using the air flow of the shortcut fiber, an air flow is formed by a blower or the like, the shortcut fiber is supplied to the air flow, and the fiber is defibrated by the stirring effect of the air flow.

  As a defibrating method, it is preferable to defibrate with a swirling air flow. According to the defibrating method using the swirling air flow, the shortcut fiber can be sufficiently defibrated, and the dispersibility of the defibrated shortcut fiber can be further increased when forming the air laid web by the air laid method. .

  As a defibrating method using a swirling air flow, for example, a method of putting a shortcut fiber into the blower and defibrating with the blower can be mentioned. Further, there is a method in which air is sent along a circumferential direction in a cylindrical container by a blower to form a swirling flow, a shortcut fiber is supplied into the swirling flow, and stirring to defibrate.

  The flow rate of the air flow is appropriately selected according to the amount of the shortcut fiber, but is usually in the range of 10 to 150 m / sec.

(Mixing process)
The mixing step is a step of obtaining a web raw material by mixing a heat-fusible resin in the form of a defibrating shortcut fiber and carbonate or acid. At this time, any other material can be mixed at the same time. The shape of any other material may be fibrous or particulate. Examples of arbitrary other materials include auxiliary agents added as necessary, such as water-absorbing resin particles and effect accelerators. There is no particular limitation on the order of addition of these materials, and these materials can be added by, for example, spraying or the like in a step after the mixing step.

  In mixing, in order to improve the dispersibility of the defibrating shortcut fiber, it is preferable to stir the defibrating shortcut fiber and carbonate or acid. However, in order to prevent breakage of the defibration shortcut fiber, it is preferable to apply stirring using an air flow instead of stirring using mechanical shearing force.

  The mixing step may be after the defibrating step or at the same time as the defibrating step. When the mixing step is performed simultaneously with the defibrating step, the defibrating shortcut fiber and carbonate or acid are mixed using an air flow in the defibrating step. Further, carbonate or acid powder may be added to the web forming line of the defibrating shortcut fiber in the particle spraying step described later and mixed.

(Web formation process)
A web formation process is a process of obtaining an airlaid web from a web raw material by the airlaid method. Here, the airlaid method is a method of forming a web by randomly depositing fibers three-dimensionally using an air flow.

(Particle spraying process)
The particle spraying step is a step of blending the powder into the web raw material by a known method. Either a method of forming a web by mixing powder with fibers or a method of dispersing on the surface of the web or carrier sheet may be used.

  In the web forming process in the present embodiment, for example, a web forming apparatus 1 shown in FIG. 3 is used. The web forming apparatus 1 includes a conveyor 10, a gas permeable endless belt 20, a fiber mixture supply unit 30, a first carrier sheet supply unit 40, a second carrier sheet supply unit 50, and a suction box 60.

  Here, the conveyor 10 includes a plurality of rollers 11. The air permeable endless belt 20 is mounted on the conveyor 10 and rotates. The fiber mixture supply means 30 supplies the fiber mixture to the gas permeable endless belt 20 together with the air flow. The first carrier sheet supply means 40 supplies the first carrier sheet 41 toward the gas permeable endless belt 20. The second carrier sheet supply means 50 supplies the second carrier sheet 51 toward the first carrier sheet 41 that has passed through the air-permeable endless belt 20. The suction box 60 sucks the air permeable endless belt 20 from the inside thereof.

  In the web forming apparatus 1, the fiber mixture supply means 30 is installed above the air permeable endless belt 20, the first carrier sheet supply means 40 is installed upstream of the air permeable endless belt 20, and the second carrier sheet. The supply means 50 is installed downstream of the air permeable endless belt 20.

  In the web forming process using the web forming apparatus 1, the rollers 10 are rotated in the same direction to drive the conveyor 10 and rotate the air permeable endless belt 20. Further, the first carrier sheet 41 is fed out from the first carrier sheet supply means 40 so as to come into contact with the permeable endless belt 20.

  Next, while sucking the permeable endless belt 20 by the suction box 60, the fiber mixture is lowered together with the air flow from the fiber mixture supply means 30, and the fiber mixture is dropped onto the first carrier sheet 41 on the permeable endless belt 20. , Deposit. Thereby, the air laid web A is formed.

  Next, the second carrier sheet 51 is supplied from the second carrier sheet supply means 50 on the air laid web A to obtain an air laid web-containing laminated sheet.

(Binding process)
As the binding method, it is preferable to use a thermal bond method from the viewpoint of binding without using water. The binding step by the thermal bond method is a step of heat-treating the air laid web and binding the defibrating shortcut fibers with a heat-fusible resin.

  Examples of the heat treatment of the air laid web include hot air treatment and infrared irradiation treatment, and hot air treatment is preferable from the viewpoint of low cost of the apparatus.

  As the hot air treatment, the air laid web is contacted with a through air dryer provided with a rotating drum having air permeability on the peripheral surface and heat treated (hot air circulating rotary drum method), and the air laid web is passed through a box type dryer. Examples include a method of heat treatment by passing hot air through an air laid web (hot air circulation conveyor oven method).

  When the air-laid web is sandwiched between the first carrier sheet and the second carrier sheet as in the present embodiment to form a laminated sheet, the laminated sheet may be subjected to hot air treatment. The first carrier sheet and the second carrier sheet can be peeled from the air laid web after the hot air treatment. The heat treatment temperature may be a temperature at which the heat-fusible resin melts. For example, when using materials such as PP and PE that are generally used for thermal bonding, it is desirable to set the heating temperature to 115 ° C. or higher.

  After the binding step, it may be compressed through a heating roll for the purpose of finely adjusting the thickness and density of the carbon dioxide generating sheet.

(Function and effect)
In the above production method, the carbonate or acid particles and the heat-fusible resin can be blended uniformly. Therefore, gas can be generated uniformly in the in-plane direction of the sheet.

  By blending the carbonate or acid with the heat-fusible resin, the carbonate or acid can be firmly fixed with the heat-fusible resin as a binder in the carbon dioxide generating sheet, so that powder falling can be prevented. .

[Second embodiment]
With reference to FIG. 4, the layer configuration and the function and effect of the carbon dioxide generating sheet according to the second embodiment of the present invention will be described. Description of the same configuration as the first aspect may be omitted.

<Carbon dioxide generation sheet>
The carbon dioxide generating sheet according to the second aspect of the present invention is a laminate including a carbonate layer and an acid layer, and the carbonate layer and the acid layer are provided adjacent to each other. At least one of them is a layer containing a water absorbing material. The carbon dioxide generating sheet according to the second aspect of the present invention is manufactured by a dry method in order to prevent a reaction between the carbonate and the acid during the manufacturing process.

(Layer structure and effects)
FIG. 4 is a diagram illustrating the configuration of the carbon dioxide generating sheet according to the second aspect of the present invention for the purpose of illustration and not for the purpose of limitation. In the drawings, the same reference numerals indicate the same components. For the same component, a duplicate description may be omitted.

  4A and 4B are examples in which one of the carbonate layer and the acid layer is a layer containing a water-absorbing material, and the other is a layer not containing the water-absorbing material.

  Specifically, the carbon dioxide generating sheet shown in FIG. 4 (a) has a configuration in which an acid layer 200 including a water absorbing material, a carbonate layer 120 not including a water absorbing material, and a water absorbing sheet 300 are sequentially laminated. Have Moreover, the carbon dioxide generating sheet shown in FIG. 2B has a configuration in which a carbonate layer 100 containing a water absorbent material, an acid layer 220 not containing a water absorbent material, and a water absorbent sheet 300 are sequentially laminated. .

  4 (a) and 4 (b), since one of the carbonate layer and the acid layer contains a water-absorbing material, the distribution of carbonate or acid in the thickness direction of the layer is widened and moisture is used during use. Can be gradually infiltrated. Therefore, it is possible to provide a wide range of time for starting the reaction between the carbonate and the acid. Moreover, the carbon dioxide generation as the whole carbon dioxide generation sheet can be maintained.

  4A and 4B, the water absorbent sheet 300 is included on the surface. Therefore, at the time of use, water such as skin lotion can be sufficiently permeated to promote the reaction between the carbonate and the acid. In addition, since the water absorbent sheet 300 is provided so as to cover the upper surfaces of the layers 120 and 220 that do not include the water absorbent material, it is possible to prevent carbonate or acid from falling off the carbon dioxide generating sheet. The water absorbent sheet 300 is not an essential element in the present invention.

  FIG. 4C shows an example in which both the carbonate layer 100 and the acid layer 200 are layers containing a water-absorbing material. Since both the carbonate layer and the acid layer contain water-absorbing materials, the distribution of the carbonate or acid in the thickness direction can be expanded, and moisture can be gradually infiltrated during use, so that the reaction between the carbonate and acid starts. Time can be given a range. Therefore, the carbon dioxide generation as the whole carbon dioxide generation sheet can be maintained.

  4D and 4E are examples in which a water absorbent sheet 300 is further laminated on one side or both sides of the configuration shown in FIG. 4C. Since the water-absorbent sheet 300 is included on the surface, water such as skin lotion can be sufficiently permeated or retained during use to promote the reaction between carbonate and acid. In addition, when the carbon dioxide gas generating sheet of the present invention includes a plurality of layers of the water absorbent sheet 300, they are not necessarily the same material. When the sheet 300 is provided on the surface, the acid or base can be prevented from coming into direct contact with the skin, so that there is an effect of buffering stimulation by the acid or alkali.

  The carbon dioxide generating sheet shown in FIG. 4 (f) is an example in which a film 400 having relatively low air permeability is provided on the surface not having the water absorbent sheet 300 with respect to the configuration shown in FIG. 4 (d). It is.

  In the configuration of FIG. 4 (f), since the film 400 having relatively low air permeability is provided on one side, carbon dioxide gas generated during use can be prevented or suppressed from being released from the surface on the film arrangement side. . Therefore, it is possible to apply carbon dioxide gas intensively and / or over a long period of time to the skin by applying the surface opposite to the surface on which the film is disposed to the skin.

  The configuration of the carbon dioxide generating sheet of the present invention has been described above with reference to FIGS. 4 (a) to 4 (f). However, these are merely examples, and other configurations, for example, configurations in which the relationship between carbonate and acid is reversed in the figure are also included in the scope of the present invention.

(Carbonate layer)
The carbonate layer is a layer containing carbonate and / or bicarbonate. As carbonate or bicarbonate, when used as a cosmetic, any grade that can be used in cosmetics can be used without any particular limitation. When used for other purposes, no particular grade is specified. For example, sodium carbonate, sodium bicarbonate, sodium sesquicarbonate, potassium carbonate, potassium bicarbonate, calcium carbonate, magnesium carbonate, magnesium bicarbonate, calcium bicarbonate, or a derivative thereof can be used. Two or more carbonates and / or bicarbonates may be used in combination. The carbonate and / or bicarbonate is a solid composition, for example, preferably in the form of particles. The carbonate and / or bicarbonate may be in a form supported on a support such as silica. The carbonate and / or bicarbonate may contain water as crystal water. When water of crystallization is included, the solubility in water increases and the reactivity is improved. However, from the viewpoint of storage stability, it is preferable that the carbonate layer does not contain water that causes alteration such as hydrolysis and reaction with an acid. In addition to carbonate and / or bicarbonate, the carbonate layer can contain a heat-fusible resin and an effect accelerator. As the carbonate or bicarbonate used in the present invention, particles having an average particle diameter of 5 to 5000 μm are preferable. When the average particle size is 5 to 5000 μm, the dropout of the particles is small, and a good feeling of use can be obtained with an appropriate granular feeling.

(Acid layer)
The acid layer is a layer containing a solid acid. When used as a cosmetic, the acid can be used without particular limitation as long as it is of a grade that can be used in cosmetics, and no special grade is specified when used for other purposes. For example, malonic acid, maleic acid, citric acid, malic acid, tartaric acid, succinic acid, fumaric acid, hyaluronic acid, sodium dihydrogen phosphate or a derivative thereof, a substance that is hydrolyzed to generate an acid, and the like can be used. Two or more acids may be used in combination. The acid is a solid composition, and is preferably in the form of particles, for example. The acid may contain water as crystal water. When water of crystallization is included, the solubility in water increases and the reactivity is improved. However, from the viewpoint of storage stability, it is preferable that the acid layer does not contain water that causes alteration such as hydrolysis and reaction with carbonate. In addition to a solid acid, the acid layer can contain a heat-fusible resin and an effect accelerator. As the acid used in the present invention, particles having an average particle diameter of 5 to 5000 μm are preferable. When the average particle size is 5 to 5000 μm, the dropout of the particles is small, and a good feeling of use can be obtained with an appropriate granular feeling. When the average particle size is reduced, the dissolution rate is increased, and the reaction proceeds immediately after being wetted with water, so that the amount of CO ₂ gas generated in the initial stage of use is increased. Moreover, when using it for skin, a granular feeling can be reduced. On the other hand, increasing the average particle size has the effect of extending the duration of carbon dioxide gas generation because dissolution gradually proceeds when contacted with water. In addition, increasing the average particle diameter has the effect of reducing particle dropout.

(Layer containing water-absorbing material)
In the first aspect of the present invention described above, it has been explained that a water-absorbing material may be contained in at least one of the carbonate layer and the acid layer. On the other hand, in the second aspect of the present invention, it is an essential constituent requirement that at least one of the carbonate layer and the acid layer contains a water-absorbing material. The layer containing the water-absorbing material is a layer containing the water-absorbing material in the second aspect of the present invention.

(Water-absorbing material)
Water-absorbing materials include natural fibers such as pulp, hemp, cotton, silk, wool, mineral fibers, regenerated fibers such as rayon, polylactic acid, nylon, polyvinyl alcohol (PVA), and synthetic fibers such as polymer absorbent fibers (SAF). Fibers can be used. The water absorbing material can be used, for example, in the form of a defibration shortcut fiber. Two or more water-absorbing materials may be used in combination. Further, as the water-absorbing material, an auxiliary agent in the form of particles such as water-absorbing resin particles can be used. Examples of the water-absorbing resin particles include carboxymethyl cellulose, polyvinyl alcohol, and a polymer absorber (SAP).

  The carbonate or acid can be dispersed in the layer due to the presence of the water-absorbing material, and the distribution can be widened in the thickness direction. In addition, the absorbent material of the present invention can absorb and retain water and carbonates or acids dissolved in water when using the carbon dioxide generating sheet, while being able to release slowly. Moisture can be gradually infiltrated in the carbon dioxide generating sheet. Therefore, when using the carbon dioxide gas generating sheet, the time for starting the reaction between the carbonate and the acid can be widened. As a result, the carbon dioxide gas generating sheet as a whole has a long duration. can do.

(Effect promoter)
One or a plurality of effect accelerators can be blended in the carbon dioxide gas generating sheet of the present invention depending on the application.

  Examples of the effect promoter include: oily base, moisturizer, touch improver, surfactant, polymer, thickener / gelator, solvent, propellant, antioxidant, reducing agent, oxidizing agent, preservative , Antibacterial agents, chelating agents, pH adjusters, acids, alkalis, powders, inorganic salts, UV absorbers, whitening agents, vitamins and their derivatives, anti-inflammatory agents, anti-inflammatory agents, hair-growth agents, blood circulation promoters, Stimulants, hormones, anti-wrinkle agents, anti-aging agents, squeeze agents, cooling sensations, warming sensations, wound healing promoters, stimulation relieving agents, analgesics, cell activators, plant / animal / microbe extracts, antipruritics , Exfoliating / dissolving agent, antiperspirant, refreshing agent, astringent, enzyme, nucleic acid, fragrance, pigment, colorant, dye, pigment, metal-containing compound, unsaturated monomer, polyhydric alcohol, polymer additive Anti-inflammatory analgesic, antifungal, antihistamine, hypnotic sedative, tranquilizer, antihypertensive Antihypertensive diuretics, antibiotics, anesthetics, antibacterial substances, antiepileptics, coronary vasodilators, herbal medicines, adjuvants, wetting agents, thickeners, tackifiers, antipruritics, keratin softening release agents, oily Examples include raw materials, ultraviolet blocking agents, antiseptics, antioxidants, liquid matrices, fat-soluble substances, polymeric carboxylates, additives, metal soaps, and the like.

  An effect promoter can be mix | blended with one or both of a carbonate layer and an acid layer, for example. It can also be added to other layers.

(Heat-fusion resin)
The heat-fusible resin in the present invention is a binder resin that binds the water-absorbing material and carbonate or acid. In addition, the heat-fusible resin has an effect of imparting strength to the carbon dioxide generating sheet, and the shape is easily maintained.

  The heat-fusible resin may be fibrous or particulate. From the viewpoint of higher strength, the heat-fusible resin is preferably fibrous. The heat-fusible resin may be in the form of a shortcut fiber, for example.

  Examples of the heat-fusible resin include low-density polyethylene (PE) having a melting point of 95 ° C to 130 ° C, high-density polyethylene having a melting point of 120 ° C to 140 ° C, and a homopolymer or block copolymer having a melting point of 160 ° C to 165 ° C. Polypropylene (PP) composed of a polypropylene having a melting point of 135 ° C. to 150 ° C., low melting point polyethylene terephthalate (PET) having a melting point of 110 to 190 ° C., low melting point polyamide having a melting point of 100 to 130 ° C., melting point of 110 ° C. Examples include low-melting polylactic acid having a melting point of ˜150 ° C. and polybutylene succinate having a melting point of 115 ° C. A thermoplastic resin having a melting point exceeding 110 ° C. is preferably used in the present invention. Two or more kinds of heat-fusible resins may be used in combination.

  When the heat-fusible resin is fibrous, the fineness of the heat-fusible fiber is preferably 1 dtex to 120 dtex, and more preferably 1 dtex to 85 dtex. Moreover, it is preferable that the average fiber length of a heat-fusible fiber is 1-100 mm, It is more preferable that it is 1-60 mm, It is further more preferable that it is 2-30 mm. When the fineness and average fiber length of the heat-fusible fiber are within the above ranges, the web layer can be easily formed, and a uniform binding force and dispersion state can be easily obtained.

  When the heat-fusible resin is in the form of particles, the average particle diameter of the heat-fusible particles is preferably 1 to 1,000 μm, and more preferably 10 to 800 μm. The average particle size of the heat-fusible resin can be appropriately selected within a range in which the carbonate and acid particles to be used are not completely covered.

(Heat-fusion resin composite)
The heat-fusible resin may be a composite having two or more components. For example, core-sheath fibers in which resins having different melting points are combined, side-by-side fibers using different resins in a cross section perpendicular to the longitudinal direction, and core-shell particles having a core and a shell are included. Among these, core-sheath fibers are preferably used because different types of resins can be easily combined.

  As the core-sheath fiber, a core-sheath fiber whose melting point of the sheath part is lower than the melting point of the core part is preferably used. For example, a PP / PE composite core-sheath fiber provided with a core part made of polypropylene fiber (melting point 160 ° C.) and a sheath part made of polyethylene (melting point 130 ° C.) formed on the outer periphery of the core part can be mentioned.

  Other core sheath fibers include, for example, PET / low melting point PET composite core sheath fiber, high density polyethylene / low density polyethylene composite core sheath fiber, polyethylene / low melting point PET composite core sheath fiber, polyamide / low melting point polyamide composite. Examples include core-sheath fibers, polylactic acid / low melting point polylactic acid composite core-sheath fibers, and polylactic acid / polybutylene succinate composite core-sheath fibers. Many common core-sheath fibers have a melting point of the sheath part exceeding 110 ° C., and such core-sheath fibers are preferably used in the present invention.

  When the core-sheath fiber having a lower melting point of the sheath part than the melting point of the core part is used for the carbon dioxide generating sheet of the present invention, when heated to a temperature that is equal to or higher than the melting point of the sheath part and lower than the melting point of the core part, The resin in the sheath part melts and the resin in the core part maintains its shape. As a result, the molten resin in the sheath part retains carbonate and / or bicarbonate in the carbonate layer and / or retains acid in the acid layer, and the water-absorbing material and the fibers in the core part. The effect which binds the structural components of the structure comprised by this is shown. Therefore, the carbon dioxide generating sheet according to the present invention can provide a sheet strength while ensuring a void in the sheet, and can provide a soft and excellent sheet.

(Water absorbent sheet)
As the water-absorbent sheet 300, any sheet can be used among a sheet having a property of passing moisture (water permeability) and a sheet having a property of absorbing moisture (water absorption). As a sheet | seat which has the property (water permeability) which lets a water pass, it is only necessary to let water pass through and there is no limitation. As the sheet having the property of absorbing moisture (water absorption), a sheet that can take in and retain moisture and release the moisture inside can be used. That is, it can be said that the sheet | seat which has the property (water absorption) which absorbs the water | moisture content which can be applied to this invention is a kind of sheet | seat which has the property (water permeability) which lets water pass. The water-absorbent sheet 300 has a water absorption rate of 60 seconds or less, more preferably 30 seconds or less, measured according to the sedimentation rate measurement method defined in JIS L1907 standard. Alternatively, the water absorption (or water passage) speed by the dropping method defined in JIS L1907 standard is 60 seconds or less, and more preferably 30 seconds or less. The lower the water absorption, the faster the water-absorbing sheet 300 allows water to pass through, and in the carbon dioxide generating sheet using this, the reaction between carbonate and acid proceeds rapidly, and carbon dioxide is generated intensively in a short time. Can be made. Moreover, since the water absorption sheet 300 can delay the start of reaction of carbonate and an acid, so that water absorption (water | moisture retention power) is high, the duration of generation | occurrence | production of the carbon dioxide gas in the whole carbon dioxide generation sheet | seat Can be lengthened. The water absorbent sheet 300 can be, for example, a non-woven fabric, a cloth, or another sheet having a mesh structure, and can be a special non-woven fabric such as Warif (registered trademark), for example.

  In addition, for the purpose of imparting design properties and improving the wiping property when used as a cleaning article, the surface of the water-absorbent sheet serving as the outer layer of the carbon dioxide generating sheet may be subjected to surface treatment such as unevenness. By using a thick sheet or a low-density sheet as the water-absorbing sheet used on the surface, there is an effect of reducing the graininess appearing on the outer surface of the carbon dioxide generating sheet. On the other hand, if a thin sheet or a sheet with high water permeability and air permeability is used, it is difficult to prevent moisture from entering from the surface of the carbon dioxide generating sheet and releasing the generated carbon dioxide to the outside. Easy to get. The water absorbent sheet is appropriately selected according to the use and purpose.

(the film)
The film 400 has such flexibility that the carbon dioxide generating sheet can be applied along the skin or the curved surface when in use, and the other layer of the carbon dioxide generating sheet, in particular, the air-absorbing sheet 300 is air permeable. Any film having a relatively low property can be used.

The lower the air permeability of the film, the higher the effect of preventing / inhibiting the release of the carbon dioxide gas generated when the carbon dioxide generating sheet is used from the film arrangement side surface. Therefore, it is possible to apply carbon dioxide gas intensively and / or for a long time to the skin or application site by applying the surface opposite to the film placement side to the skin or the site to be cleaned. Has the effect of becoming. On the other hand, if the air permeability is low, stuffiness during use tends to occur, so the film may have an appropriate air permeability. For example, the air permeability measured by the “fabric and knitted fabric test method” defined in Japanese Industrial Standard JIS L1096: 2010 is preferably 150 cm ³ / cm ² / s or less, more preferably 200 cm ³ / cm ^2. / S or less film can be used. This air permeability is the amount of air permeating the film per unit area and unit time when a predetermined pressure is applied, and the larger the value, the higher the air permeability. By using the other layer of the carbon dioxide generating sheet, in particular, a film having a relatively low air permeability as compared with the water absorbent sheet, directivity can be given to the permeation of carbon dioxide.

  Examples of the film include resin films such as polyester, polyvinyl alcohol, polyethylene, polypropylene, and a composite film of polyethylene and polypropylene.

(Content ratio of each component)
From the viewpoint of cost, the carbonate and acid in the carbon dioxide generating sheet are preferably used in chemical equivalents, but considering the effect on the skin, the acid is over-blended and the pH after reaction is about 5 It can also be adjusted so that Moreover, the preferable compounding ratio of carbonate and acid may differ depending on the difference in solubility due to factors such as the particle diameter of carbonate and acid, and can be adjusted as appropriate.

  In each of the carbonate layer and the acid layer, the content ratio (mass basis) of the carbonate or acid and the heat-fusible resin can be, for example, 2/98 to 98/2, and 5/95 to 95 / 5 and can be 10/90 to 90/10. When the ratio is in the above range, the carbonate and acid in the in-plane direction of the carbon dioxide generating sheet can be blended uniformly, and powder falling can be suppressed.

  When each of the carbonate layer and the acid layer further contains a water-absorbing material, the content ratio (mass basis) of the carbonate or acid, the heat-fusible resin, and the absorbent material is, for example, 2/49 / 49-96 / 2/2, 6/47 / 47-94 / 3/3, and 10/45 / 45-90 / 5/5. When the ratio is in the above range, the carbonate and the acid can be uniformly disposed in the in-plane direction of the carbon dioxide generating sheet, and can be dispersed in the layer due to the presence of the water-absorbing material. it can. In addition, the absorbent material of the present invention can absorb and retain water and carbonates or acids dissolved in water when using the carbon dioxide generating sheet, while being able to release slowly. Moisture can be gradually infiltrated in the carbon dioxide generating sheet. Therefore, when using the carbon dioxide gas generating sheet, the time for starting the reaction between the carbonate and the acid can be widened. As a result, the carbon dioxide gas generating sheet as a whole has a long duration. can do.

  In addition, an appropriate amount of one or more effect promoters can be blended in one or more of the carbonate layer, acid layer, and other layers.

(Basis weight)
The basis weight of the carbon dioxide generating sheet can be appropriately set according to the application. For example, it is preferably 30 to 300 g / m ² .

<Method for producing carbon dioxide generating sheet>
As a method for producing a carbon dioxide generating sheet according to the second aspect of the present invention, for example, a layer containing a water-absorbing material is produced in a web forming apparatus employing an airlaid method, and another layer is separately laminated on this The method can be used. As such a method, a uniform mixture of acid particles or carbonate particles and fusible binder particles such as polyethylene (PE) is placed on the surface of a layer containing a water-absorbing material containing carbonate or acid. There is a method in which a fusible binder is melted by heat and bonded. Alternatively, when a layer containing a water-absorbing material is produced by a web forming apparatus employing the airlaid method, a laminate is formed by using the water-absorbing sheet of the present invention as a carrier sheet for conveying the web layer. A carbon dioxide generating sheet having a layer structure according to the second aspect of the present invention may be obtained. Moreover, you may join each layer of the carbon dioxide gas generation sheet produced separately by embossing or heat seal processing. There is also a method in which an adhesive layer is provided on at least one of the joining surfaces of the layers of the carbon dioxide generating sheet, and the layers are joined. In order to prevent the reaction between the carbonate and the acid during production, in the present invention, these laminations are performed by a dry method.

  In the carbon dioxide generating sheet of the present invention produced by laminating by the dry method, the acid particles and the carbonate particles can be present in the form of particles in separate layers. For this reason, the carbon dioxide generating sheet of the present invention is less stable than the structure in which the acid particles and the carbonate particles are blended in the same layer, and both components are prevented from easily reacting with moisture in the ambient atmosphere. Excellent in storage and storage stability.

(Production method of carbonated pack sheet using airlaid method)
The manufacturing method of the carbonic acid pack sheet of this embodiment which employs the airlaid method includes a defibrating step, a mixing step, a web forming step, and a binding step.

(Defibration process)
The defibrating step is a step of defibrating a material in the form of a shortcut fiber to obtain a defibrated shortcut fiber by airflow.

  In the defibrating method using the air flow of the shortcut fiber, an air flow is formed by a blower or the like, the shortcut fiber is supplied to the air flow, and the fiber is defibrated by the stirring effect of the air flow.

  As a defibrating method, it is preferable to defibrate with a swirling air flow. According to the defibrating method using the swirling air flow, the shortcut fiber can be sufficiently defibrated, and the dispersibility of the defibrated shortcut fiber can be further increased when forming the air laid web by the air laid method. .

  As a defibrating method using a swirling air flow, for example, a method of putting a shortcut fiber into the blower and defibrating with the blower can be mentioned. Further, there is a method in which air is sent along a circumferential direction in a cylindrical container by a blower to form a swirling flow, a shortcut fiber is supplied into the swirling flow, and stirring to defibrate.

  The flow rate of the air flow is appropriately selected according to the amount of the shortcut fiber, but is usually in the range of 10 to 150 m / sec.

(Mixing process)
The mixing step is a step of obtaining a web raw material by mixing a water-absorbing material in the form of a defibration shortcut fiber and carbonate or acid. At this time, any other material can be mixed at the same time. The shape of any other material may be fibrous or particulate. Examples of arbitrary other materials include auxiliary agents added as required, such as heat-fusible resins, water-absorbing resin particles, and effect accelerators. There is no particular limitation on the order of addition of these materials, and these materials can be added by, for example, spraying or the like in a step after the mixing step.

  In mixing, in order to improve the dispersibility of the defibrating shortcut fiber, it is preferable to stir the defibrating shortcut fiber and other materials. However, in order to prevent breakage of the defibration shortcut fiber, it is preferable to apply stirring using an air flow instead of stirring using mechanical shearing force.

  The mixing step may be after the defibrating step or at the same time as the defibrating step. When the mixing step is performed simultaneously with the defibration step, the defibration shortcut fiber and an arbitrary material are mixed using an air flow in the defibration step. Further, arbitrary particles may be introduced into the web forming line of the defibrating shortcut fiber in a particle spraying step described later and mixed.

(Web formation process)
A web formation process is a process of obtaining an airlaid web from a web raw material by the airlaid method. Here, the airlaid method is a method of forming a web by randomly depositing fibers three-dimensionally using an air flow.

(Particle spraying process)
The particle spraying step is a step of blending the powder into the web raw material by a known method. Either a method of mixing powder with fibers to form a web or a method of dispersing on the surface of a web or a carrier sheet may be used.

  In the web forming process in the present embodiment, for example, a web forming apparatus 1 shown in FIG. 3 is used. The web forming apparatus 1 includes a conveyor 10, a gas permeable endless belt 20, a fiber mixture supply unit 30, a first carrier sheet supply unit 40, a second carrier sheet supply unit 50, and a suction box 60.

  Here, the conveyor 10 includes a plurality of rollers 11. The air permeable endless belt 20 is mounted on the conveyor 10 and rotates. The fiber mixture supply means 30 supplies the fiber mixture to the gas permeable endless belt 20 together with the air flow. The first carrier sheet supply means 40 supplies the first carrier sheet 41 toward the gas permeable endless belt 20. The second carrier sheet supply means 50 supplies the second carrier sheet 51 toward the first carrier sheet 41 that has passed through the air-permeable endless belt 20. The suction box 60 sucks the air permeable endless belt 20 from the inside thereof.

  In the web forming apparatus 1, the fiber mixture supply means 30 is installed above the air permeable endless belt 20, the first carrier sheet supply means 40 is installed upstream of the air permeable endless belt 20, and the second carrier sheet. The supply means 50 is installed downstream of the air permeable endless belt 20.

  In the web forming process using the web forming apparatus 1, the rollers 10 are rotated in the same direction to drive the conveyor 10 and rotate the air permeable endless belt 20. Further, the first carrier sheet 41 is fed out from the first carrier sheet supply means 40 so as to come into contact with the permeable endless belt 20.

  Next, while sucking the permeable endless belt 20 by the suction box 60, the fiber mixture is lowered together with the air flow from the fiber mixture supply means 30, and the fiber mixture is dropped onto the first carrier sheet 41 on the permeable endless belt 20. , Deposit. Thereby, the air laid web A is formed.

  Next, the second carrier sheet 51 is supplied from the second carrier sheet supply means 50 on the air laid web A to obtain an air laid web-containing laminated sheet.

(Binding process)
As the binding method, it is preferable to use a thermal bond method from the viewpoint of binding without using water. The binding step by the thermal bond method is a step of heat-treating the air laid web and binding the defibrating shortcut fibers with a heat-fusible resin.

  Examples of the heat treatment of the air laid web include hot air treatment and infrared irradiation treatment, and hot air treatment is preferable from the viewpoint of low cost of the apparatus.

  As the hot air treatment, the air laid web is contacted with a through air dryer provided with a rotating drum having air permeability on the peripheral surface and heat treated (hot air circulating rotary drum method), and the air laid web is passed through a box type dryer. Examples include a method of heat treatment by passing hot air through an air laid web (hot air circulation conveyor oven method).

  When the air-laid web is sandwiched between the first carrier sheet and the second carrier sheet as in the present embodiment to form a laminated sheet, the laminated sheet may be subjected to hot air treatment. The first carrier sheet and the second carrier sheet can be peeled from the air laid web after the hot air treatment. The heat treatment temperature may be a temperature at which the heat-fusible resin melts. For example, when using materials such as PP and PE that are generally used for thermal bonding, it is desirable to set the heating temperature to 115 ° C. or higher.

  After the binding step, it may be compressed through a heating roll for the purpose of finely adjusting the thickness and density of the carbon dioxide generating sheet.

(Function and effect)
In the said manufacturing method, particle | grains and the fiber of a water absorbing material can be efficiently contained in the layer containing a water absorbing material. Therefore, there is little material loss and cost reduction can be achieved. In addition, a sheet having a good texture can be easily manufactured.

  The carbonate or the acid can be present in the layer containing the water-absorbing material by being dispersed in the thickness direction of the layer due to the presence of the water-absorbing material. The water-absorbing material can gradually infiltrate moisture, and can widen the reaction start between the carbonate and the acid when using the carbon dioxide generating sheet. As a result, the duration of carbon dioxide generation as the whole carbon dioxide generation sheet can be lengthened.

II. Second example of functional sheet substrate [cyclodextrin-containing sheet]
Hereinafter, with reference to FIG. 5 and FIG. 6, the cyclodextrin containing sheet | seat applicable as a functional sheet base material which comprises the functional sheet | seat of this invention is demonstrated.

  The cyclodextrin-containing sheet that can be applied to the functional sheet substrate of the present invention includes a cyclodextrin-containing layer in which a functional component is included, and the cyclodextrin-containing layer is provided by a dry method. .

  In the present specification, the term “cyclodextrin in which a functional component is included” is not necessarily limited to the case where the total amount of cyclodextrin having inclusion performance includes the maximum amount of functional component. That is, in this specification, “cyclodextrin in which a functional component is included” means a so-called empty state in which a functional component is not included in addition to a cyclodextrin in which a functional component is included. It can contain cyclodextrin.

  With reference to FIG. 5, the structure of the cyclodextrin-containing sheet included in the scope of the present invention will be described. FIG. 5 is a diagram showing the structure of the cyclodextrin-containing sheet of the present invention for the purpose of illustration and not for the purpose of limitation. In the drawings, the same reference numerals indicate the same components. For the same component, a duplicate description may be omitted.

  5 (a) to 5 (c) show a cyclodextrin-containing sheet comprising a cyclodextrin-containing layer 100 in which a functional component is included according to the present invention. FIG. 5 (a) is a cyclodextrin-containing sheet consisting only of the cyclodextrin-containing layer 100. 5B and 5C show a cyclodextrin-containing sheet in which another layer 300 is laminated on one side or both sides of the cyclodextrin-containing layer 100. FIG.

  Thus, the cyclodextrin-containing sheet of the present invention may have a single layer structure, or may have a multilayer structure of two layers, three layers, or four or more layers not shown. The cyclodextrin-containing sheet may include two or more cyclodextrin-containing layers 100. The other layer 300 is used for the purpose of imparting some functionality to the cyclodextrin-containing sheet, for example, for the purpose of modifying the surface of the cyclodextrin-containing sheet or for imparting strength (rigidity) to the cyclodextrin-containing sheet. It can be arranged. For the other layer 300, for example, a sheet of cloth, nonwoven fabric, paper, film, or the like can be used. The other layer 300 may contain a heat-fusible resin. When the cyclodextrin-containing sheet includes a plurality of layers 300, these layers 300 may be the same material or different materials.

  The cyclodextrin-containing layer 100 can contain only cyclodextrin C in which a functional component is included. At this time, the present invention is not limited to one type, and a plurality of types of cyclodextrin C in which a functional component is included can be included. That is, each of the functional component and the cyclodextrin may be one kind or plural kinds. The type of functional component and the type of cyclodextrin will be described later.

  Further, the cyclodextrin-containing layer 100 may contain fibers, a heat-fusible resin, an effect accelerator, and the like in addition to the cyclodextrin C in which the functional component is included.

  Specific examples as shown in the following first to sixth aspects will be described as an example of a configuration for preventing cyclodextrin C in which the functional component is included from the cyclodextrin-containing sheet from falling off.

(First aspect)
FIG. 5D is an example in which the cyclodextrin-containing layer 100 in which the functional component is included contains the fibers F. In the cyclodextrin-containing layer 110 containing the fiber F, the cyclodextrin powder in which the functional component is included is held in the void formed by the fiber F, that is, the void in the fiber structure formed by the fiber F. This prevents powder falling off.

  The cyclodextrin-containing layer 110 containing fibers can contain only cyclodextrin C and fibers F in which functional components are included. In addition, the cyclodextrin-containing layer 110 containing fibers may contain, in addition to cyclodextrin C and fibers F in which functional components are included, a heat-fusible resin, an effect accelerator, and the like. Further, the fiber F itself may be a heat-fusible resin.

  In this embodiment, the cyclodextrin-containing sheet has another layer 300 laminated on one or both sides of the cyclodextrin-containing layer 110 containing the fibers F, for the purpose of imparting functionality such as surface modification and strength (rigidity). It may have a multilayer structure (not shown).

(Second aspect)
FIG. 5E is an example in which the cyclodextrin-containing layer 100 in which the functional component is included contains the heat-fusible resin A. The cyclodextrin-containing layer 120 containing the heat-fusible resin A melts the heat-fusible resin A in the mixture containing the cyclodextrin powder in which the functional component is included and the heat-fusible resin A. Is obtained.

  In the cyclodextrin-containing layer 120 containing the heat-fusible resin A, the cyclodextrin C in which the functional component is included is partially covered when the molten heat-fusible resin A is solidified. By being fixed, powder fall-off is prevented. The heat-fusible resin A is blended in such an amount that it does not cover the entire cyclodextrin C in which the functional component is included. The cyclodextrin C in which the functional component is included It has a portion that is not covered with the adhesive resin A, and the performance of releasing functional components is guaranteed.

  The cyclodextrin-containing layer 120 containing the heat-fusible resin A can contain only the cyclodextrin C and the heat-fusible resin A in which functional components are included. Further, the cyclodextrin-containing layer 120 containing the heat-fusible resin A contains fibers, an effect accelerator and the like in addition to the cyclodextrin C and the heat-fusible resin A in which the functional components are included. It may be. Further, the heat-fusible resin A itself may be fibrous.

  In this embodiment, the cyclodextrin-containing sheet is provided on one or both sides of the cyclodextrin-containing layer 120 containing the heat-fusible resin A for the purpose of imparting functionality such as surface modification and strength (rigidity). It may have a multilayer structure (not shown) in which 300 are laminated.

(Third aspect)
FIG. 5F is an example in which the layer adjacent to the cyclodextrin-containing layer 100 in which the functional component is included contains the heat-fusible resin B. The layer 200 including the heat-fusible resin B adjacent to the cyclodextrin-containing layer is obtained by disposing the heat-fusible resin B on the surface of the cyclodextrin-containing layer 100 and melting the heat-fusible resin B by heat. Is obtained.

  The cyclodextrin C containing the functional component included in the cyclodextrin-containing layer 100 is solidified when the heat-sealable resin B melted in the layer 200 containing the heat-sealable resin B adjacent thereto is solidified. The powder is prevented from falling off by being partially covered and fixed. Moreover, the cyclodextrin C in which the functional component is included has a portion not covered with the heat-fusible resin B, and the performance of releasing the functional component is guaranteed.

  The layer 200 containing the heat-fusible resin B can contain only the heat-fusible resin B. In addition to the heat-fusible resin B, the layer 200 containing the heat-fusible resin B may contain fibers, an effect accelerator, and the like. When these other components are included, the layer 200 containing the heat-fusible resin B is formed by placing a mixture of the heat-fusible resin B and these other components on the surface of the cyclodextrin-containing layer 100 by heat. It can be obtained by melting the heat-fusible resin B.

  In detail, the cyclodextrin-containing sheet of the example shown in FIG. 5 (f) includes a layer 200 containing the heat-fusible resin B and a cyclodextrin-containing layer 100 made of cyclodextrin powder in which a functional component is included. And a cyclodextrin-containing layer 120 containing the heat-fusible resin A. In the case of this example, the cyclodextrin-containing layer 120 containing the heat-fusible resin A can also contribute to prevention of powdered-off of cyclodextrin contained in the cyclodextrin-containing layer 100 positioned as an intermediate layer. Further, here, the cyclodextrin-containing layer 100 and the cyclodextrin-containing layer 120 containing the heat-fusible resin A are illustrated and described as separate layers. However, these two layers are integrally configured to form a single layer. The structure which comprises the cyclodextrin content layer 120 containing the heat-fusible resin A is also contained in this aspect. According to this aspect, in particular, in the cyclodextrin-containing layer 120 containing the heat-fusible resin A, when the cyclodextrin powder is unevenly distributed on the surface side, powder falling can be effectively prevented.

  In this embodiment, the layer 200 containing the heat-fusible resin B may be provided on both surfaces of the cyclodextrin-containing layer in which the functional component is included.

  In this embodiment, the cyclodextrin-containing sheet is formed on the outer surface of the laminate of the layer 200 containing the cyclodextrin-containing layer and the heat-fusible resin B for the purpose of imparting functionality such as surface modification and strength (rigidity). You may have the multilayered structure (not shown) by which the other layer 300 was laminated | stacked on the single side | surface or both surfaces.

(Fourth aspect)
The above-mentioned cyclodextrin-containing sheet according to the present invention may be formed by heat sealing. As an example, FIG. 5G shows a configuration in which another layer 300 containing a heat-fusible resin is laminated on both sides of a cyclodextrin-containing layer 100 in which a functional component is included, and four sides are heat-sealed. Indicates.

(5th aspect)
FIG. 5H is an example in which an adhesive layer is provided adjacent to the cyclodextrin-containing layer 100 in which the functional component is included. The adhesive layer 500 adjacent to the cyclodextrin-containing layer is obtained by disposing the adhesive layer 500 on the surface of the cyclodextrin-containing layer. The adhesive layer is not particularly limited as long as it is a layer exhibiting an adhesive function so that cyclodextrin contained in the cyclodextrin-containing layer 100 is prevented from falling off, and examples thereof include a hot melt adhesive.

  Specifically, the cyclodextrin-containing sheet shown in FIG. 5 (h) is a hot melt adhesive such as a thermoplastic resin between the cyclodextrin-containing layer 100 in which the functional component is included and the other layer 300. A configuration in which an adhesive layer 500 made of an agent is interposed and interlayer bonding is performed by hot melt processing is shown.

  More specifically, the cyclodextrin-containing sheet of the example shown in FIG. 5 (h) includes a cyclodextrin-containing layer containing the heat-fusible resin A on the surface of the cyclodextrin-containing layer 100 opposite to the adhesive layer 500. 120. Also in the cyclodextrin-containing sheet of the example shown in FIG. 5 (h), the cyclodextrin-containing layer 120 containing the heat-fusible resin A is positioned as an intermediate layer as in the example of FIG. 5 (f). Further, the cyclodextrin-containing layer 100 can contribute to prevention of cyclodextrin from falling off. Further, here, the cyclodextrin-containing layer 100 and the cyclodextrin-containing layer 120 containing the heat-fusible resin A are illustrated and described as separate layers. However, these two layers are integrally configured to form a single layer. The structure which comprises the cyclodextrin content layer 120 containing the heat-fusible resin A is also contained in this aspect. According to this aspect, in particular, in the cyclodextrin-containing layer 120 containing the heat-fusible resin A, when the cyclodextrin powder is unevenly distributed on the surface side, powder falling can be effectively prevented.

(Sixth aspect)
The above-mentioned cyclodextrin-containing sheet according to the present invention may be formed by embossing. As an example, FIG. 5 (i) shows a configuration in which layers 300 are laminated on both sides of a cyclodextrin-containing layer 120 containing a heat-fusible resin A, and the layers are bonded together by embossing.

  In the above, the structure of the cyclodextrin containing sheet | seat of this invention was demonstrated using Fig.5 (a) to (i). However, these are merely examples, and other configurations, for example, combinations of the exemplified embodiments are also included in the scope of the present invention. For example, the layer shown as the cyclodextrin-containing layer 100 in which the functional component is included in the drawing is the cyclodextrin-containing layer 110 containing the fibers F or the cyclodextrin-containing layer 120 containing the heat-fusible resin A. Alternatively, it may be a layer including both the fiber F and the heat-fusible resin A. Similarly, configurations in which layers are replaced between these layers are included in the scope of the present invention.

  Below, the detail of the component of the cyclodextrin containing sheet | seat which concerns on this invention is demonstrated.

(Cyclodextrin-containing layer containing functional ingredients)
The cyclodextrin-containing layer in which the functional component of the present invention is included is a layer containing cyclodextrin in a state in which the functional component is included. The cyclodextrin-containing layer in which the functional component of the present invention is included is a so-called empty cyclodextrin in which the functional component is not included in addition to the cyclodextrin in which the functional component is included. May be included. Cyclodextrin is included as a powder (particle). The cyclodextrin-containing layer in which the functional component is included may contain only the cyclodextrin in which the functional component is included. The cyclodextrin in which the functional component is included is not limited to one type, and a plurality of types may be included. Further, the cyclodextrin-containing layer in which the functional component is included may contain fibers, a heat-fusible resin, an effect accelerator, and the like in addition to the cyclodextrin in which the functional component is included. Good. Furthermore, in the present invention, in the cyclodextrin-containing layer in which the functional component is included, the cyclodextrin in which the functional component is included (that is, in addition to the cyclodextrin in which the functional component is included, In addition to the so-called empty cyclodextrin in which the functional component is not included, the cyclodextrin in which the functional component is not included (that is, a site having inclusion performance) (So-called empty cyclodextrin) may be further blended.

(Cyclodextrin)
The cyclodextrin used in the present invention is also called a cyclodextrin or a cyclic oligosaccharide, and has the ability to incorporate various molecules as a guest into a cavity (inclusion) to form an inclusion complex, and the ability to release the incorporated guest molecule slowly. Have All of α-cyclodextrin, 7 β-cyclodextrin, and 8 γ-cyclodextrin having 6 glucose groups in one molecule of cyclodextrin are compatible with the functional component to be included. Can be used. The cyclodextrin may be chemically modified such as methylation, hydroxylation, acetylation and the like. Moreover, the cyclodextrin may have a branch. These cyclodextrins can be used alone or in combination. In the present invention, the above-described cyclodextrin containing a functional component is used. The cyclodextrin used may contain empty cyclodextrin that does not include functional components.

(Functional ingredients)
As the functional component, various functional components can be used depending on the use and purpose of the cyclodextrin-containing sheet. An example of the use of the cyclodextrin-containing sheet will be described later.

  Functional ingredients that can be used in the present invention include, for example, wasabi ingredients, mustard ingredients, pepper ingredients, ginger ingredients, lemon ingredients, orange ingredients, grapefruit ingredients, yuzu ingredients, plum ingredients, matcha ingredients, almond ingredients, natural meat Extraction ingredients such as flavors, roses and herbs, natural antibacterial agents or fragrances such as plant extracts and tea extracts, natural or organic volatile antibacterial agents or fragrances such as l-menthol ingredients, coenzyme Q10 and isoflavones, etc. And other cosmetic raw materials.

  In addition to those described above, functional ingredients include, for example: medicinal ingredients, moisturizers, feel improvers, antioxidants, reducing agents, oxidizing agents, preservatives, antibacterial agents, pH adjusters, UV absorbers, whitening agents Agents, vitamins and derivatives thereof, anti-inflammatory agents, anti-inflammatory agents, hair growth agents, blood circulation promoters, stimulants, hormones, anti-wrinkle agents, anti-aging agents, squeeze agents, cooling agents, warming agents, wounds Healing accelerant, stimulant relieving agent, analgesic agent, cell activator, plant / animal / microbe extract, antipruritic agent, exfoliating / dissolving agent, antiperspirant, refreshing agent, astringent, fragrance, pigment, coloring agent, anti-inflammatory analgesic Agents, antifungal agents, antihistamines, hypnotic sedatives, tranquilizers, antihypertensive agents, antihypertensive diuretics, antibiotics, anesthetics, antibacterial agents, antiepileptic agents, coronary vasodilators, crude drugs, adjuvants, wetting agents , Antidiarrheal, keratin softening release agent, antiseptic disinfectant, fat-soluble substance, deodorant component, etc. The known compounds can be arbitrarily selected depending on the application and purpose.

  These functional components can be used alone or in combination in the cyclodextrin-containing sheet.

(Cyclodextrin containing functional ingredients)
In the present invention, cyclodextrin in which a functional component is included is used in the form of powder (particles). The cyclodextrin in which the functional component is included in the form of powder (particles) can be obtained by any method known in the art, and can also be purchased from a manufacturer. For example, Dexie Ace (product using cyclodextrin) manufactured by Shimizu Minato Sugar Co., Ltd., CAVAMAX (registered trademark) manufactured by Cyclochem, etc. can be suitably used. In these powders (particles), the cyclodextrin in which the functional component is included is not included in addition to the cyclodextrin in which the functional component is included. Of cyclodextrin may be included.

(fiber)
Examples of fibers include pulp (for example, softwood and / or softwood chemical pulp, semi-chemical pulp, mechanical pulp, waste paper pulp, etc.), rayon, hemp, cotton, silk, wool, mineral fibers and other natural fibers, polylactic acid, Synthetic fibers such as nylon, polyvinyl alcohol (PVA), and polymer absorbent fibers (SAF) can be used. Since these fibers have water absorption properties, they can be formulated as a water absorption material to promote the release of functional components when using a cyclodextrin-containing sheet. When using a cyclodextrin containing a cooling sensation material as a functional component, using a highly water-absorbing fiber such as SAF as a fiber makes it possible to provide a sheet having a strong cooling sensation and a long duration. Moreover, a non-water-absorbing fiber can also be used as the fiber of the present invention. The heat-fusible resin described below may be used in the form of fibers. These fibers can be used, for example, in the form of a defibration shortcut fiber. Two or more of these fibers may be used in combination.

(Heat-fusion resin)
The heat-fusible resin in the present invention is a binder resin that binds the constituent components. The heat-fusible resin has an effect of imparting strength to the cyclodextrin-containing sheet, and the cyclodextrin-containing sheet contains the heat-fusible resin, so that the shape is easily maintained.

  The heat-fusible resins A and B bind the cyclodextrin in which the functional component is included, and, if other components are included, the cyclodextrin and the other component in which the functional component is included. Can do. The heat-fusible resins A and B are prepared by the inclusion of the functional component in the cyclodextrin when melted and solidified so as not to prevent the release of the functional component from the cyclodextrin in which the functional component is included. In such an amount, the powder (particles) is not covered entirely.

  The heat-fusible resin may be fibrous or particulate. From the viewpoint of higher strength, the heat-fusible resin is preferably fibrous. The heat-fusible resin may be in the form of a shortcut fiber, for example.

  Examples of the heat-fusible resin include polyethylene (PE), polypropylene, low melting point polyethylene terephthalate, low melting point polyamide, low melting point polylactic acid, and polybutylene succinate.

  The heat-fusible resin may be a composite of two or more kinds of resins. For example, a core-sheath fiber composed of a core part and a sheath part, a side-by-side fiber made of a resin in which a half on one side and a half on the other side are different in a cross section perpendicular to the longitudinal direction, and a core and a shell made of different resins Examples include core-shell particles.

  Two or more kinds of heat-fusible resins may be used in combination. That is, the heat-sealable resins A and B may be the same heat-sealable resin or different heat-sealable resins. As the heat-fusible resin A and the heat-fusible resin B, one kind of heat-fusible resin may be used, or plural kinds of heat-fusible resins may be used in combination. In the case where the cyclodextrin-containing sheet includes another layer 300 to be described later and the other layer 300 includes a heat-fusible resin, the heat-fusible resin included in the other layer 300 is a heat-fusible resin. It may be the same as or different from the adhesive resins A and B, and may be one type or a combination of a plurality of types.

(Other layers)
The cyclodextrin-containing sheet of the present invention is used in addition to the cyclodextrin-containing layer 100, 110, 120 in which functional components are included, for example, for the purpose of imparting functionality such as surface modification or strength (rigidity). Layer 300 can be included.

  As the other layer 300, for example, any sheet having a property of passing moisture (water permeability) and / or a property of absorbing moisture (water absorption), such as a nonwoven fabric, cloth, and paper can be used. Moreover, arbitrary films can be used. The other layer 300 may contain a heat-fusible resin. When a film having relatively low air permeability is used on one surface of the cyclodextrin-containing sheet, it is possible to prevent the released functional component from being diffused from the surface. The surface of the other layer 300 that is the outer layer of the cyclodextrin-containing sheet may be subjected to surface processing such as unevenness.

(Effect promoter)
In the cyclodextrin-containing sheet of the present invention, one or more effect promoters can be blended depending on the application.

  Examples of the effect promoter include: oily base, moisturizer, touch improver, surfactant, polymer, thickener / gelator, solvent, propellant, antioxidant, reducing agent, oxidizing agent, preservative , Antibacterial agents, chelating agents, pH adjusters, acids, carbonates, alkalis, powders, inorganic salts, UV absorbers, whitening agents, vitamins and their derivatives, anti-inflammatory agents, anti-inflammatory agents, hair growth agents, blood circulation Accelerator, Stimulant, Hormones, Anti-wrinkle agent, Anti-aging agent, Squeeze agent, Cool sensation agent, Warm sensation agent, Wound healing promoter, Stimulation mitigation agent, Analgesic agent, Cell activator, Plant / Animal / Microbe extract , Antipruritic agent, exfoliating / dissolving agent, antiperspirant, refreshing agent, astringent, enzyme, nucleic acid, fragrance, dye, colorant, dye, pigment, metal-containing compound, unsaturated monomer, polyhydric alcohol, high Molecular additives, anti-inflammatory analgesics, antifungal agents, antihistamines, hypnotic sedatives, tranquilizers, Antihypertensive, Antihypertensive diuretic, Antibiotic, Anesthetic agent, Antibacterial agent, Antiepileptic agent, Coronary vasodilator, Herbal medicine, Adjuvant, Wetting agent, Thickener, Tackifier, Antidiarrheal agent, Keratin softening release agent Oily raw materials, UV blockers, antiseptics, anti-oxidants, liquid matrices, fat-soluble substances, polymeric carboxylates, additives, metal soaps, water-absorbing materials, and the like. For example, the use of particles such as aqueous resin particles such as carboxymethyl cellulose (CMC), polyvinyl alcohol and polymer absorber (SAP) has an effect of extending the duration and improving the release efficiency of the functional component.

  An effect promoter can be mix | blended with the cyclodextrin content layer 100,110,120 by which the functional component was included. Moreover, when the cyclodextrin-containing sheet has a multilayer structure including a cyclodextrin-containing layer and other layers, it can be blended in any one or a plurality of layers among the plurality of layers.

  For example, when the cyclodextrin-containing sheet has a multilayer structure, an acid may be blended in one layer and a carbonate may be blended in another layer to generate carbon dioxide gas when used.

(Heat seal)
Heat sealing is a method in which heat is applied by a heating means such as a heat sealer to bond the layers. In the present invention, for example, a cyclodextrin-containing layer in which a functional component composed only of cyclodextrin in which a functional component is included is used as an intermediate layer, and a layer 200 containing a heat-fusible resin on both sides thereof. By arranging and heat-sealing the four corners, it is possible to form a cyclodextrin-containing sheet having a multilayer structure.

(Adhesive layer)
The method for forming the adhesive layer is not particularly limited, but is preferably an adhesive layer obtained by hot melt processing. Hot melt processing is a processing method in which a thermoplastic resin is melted and extruded to bond the sheets. It can be used for interlayer adhesion when the cyclodextrin-containing layer and other layers are bonded.

  Examples of the thermoplastic resin that can be used for hot-melt processing include ethylene / vinyl acetate copolymer (EVA), and resins generally known as hot-melt adhesives can be used.

(Embossing)
Embossing is a process in which heat is applied with a pressing die carved with uneven patterns. This method can also be used for interlayer adhesion of multilayer structures. In addition, this method can also be used for subjecting a single layer or multi-layered cyclodextrin-containing sheet to surface treatment such as unevenness.

(Content ratio of each component)
As for the compounding quantity of the cyclodextrin in a cyclodextrin containing sheet | seat, the quantity of the powder which occupies for the sheet | seat whole quantity has preferable 0.01 mass% or more. If it is 0.01 mass% or more, a cyclodextrin inclusion component can be effectively released.

(Basis weight)
The basis weight of the cyclodextrin-containing sheet can be appropriately set depending on the application. For example, it is preferably 10 to 4000 g / m ² .

(Formation of cyclodextrin-containing layer by dry method)
In the present invention, the cyclodextrin-containing layer in which the functional component is included is a layer provided by a dry method. Dry methods that can be used in the present invention include any layer forming method that does not use water.

(Method for producing cyclodextrin-containing sheet)
For example, a cyclodextrin-containing layer in which a functional component is included is produced by a web forming apparatus that employs an airlaid method, and when another layer is included, the other layer is separately laminated on the cyclodextrin-containing layer. Manufacturing methods can be used. As such a method, a heat-fusible resin B such as polyethylene (PE) is disposed on the surface of the cyclodextrin-containing layer in which the functional component is included, and the heat-fusible resin B is melted by heat. There is a method of joining. Alternatively, when producing a cyclodextrin-containing layer (for example, the cyclodextrin-containing layer 120 containing the heat-fusible resin A) in which a functional component is included in a web forming apparatus employing an airlaid method, By using the other layer 300 of the present invention in the carrier sheet for conveying the web layer to be the layer 120, a laminate of the other layer 300 and the cyclodextrin-containing layer 120 is formed, and the layer according to the present invention You may obtain the cyclodextrin containing sheet | seat which has a structure. Moreover, you may join each layer of the cyclodextrin containing sheet produced separately by embossing or heat seal processing. There is also a method in which an adhesive layer (adhesive layer) is provided on at least one of the joining surfaces of the respective layers of the cyclodextrin-containing sheet with a hot melt adhesive such as a thermoplastic resin, and the respective layers are joined by hot melt processing. In order to prevent the release (outflow) of functional components and aggregation of cyclodextrin during production, in the present invention, these layers are laminated by a dry method.

(Method for producing cyclodextrin-containing sheet employing airlaid method)
The method for producing a cyclodextrin-containing sheet of the present embodiment that employs the airlaid method optionally includes a defibrating step, a mixing step, a web forming step, and a binding step.

(Defibration process)
The defibrating step is a step of defibrating a material in the form of a shortcut fiber to obtain a defibrated shortcut fiber by airflow.

  In the defibrating method using the air flow of the shortcut fiber, an air flow is formed by a blower or the like, the shortcut fiber is supplied to the air flow, and the fiber is defibrated by the stirring effect of the air flow.

  As a defibrating method, it is preferable to defibrate with a swirling air flow. According to the defibrating method using the swirling air flow, the shortcut fiber can be sufficiently defibrated, and the dispersibility of the defibrated shortcut fiber can be further increased when forming the air laid web by the air laid method. .

  As a defibrating method using a swirling air flow, for example, a method of putting a shortcut fiber into the blower and defibrating with the blower can be mentioned. Further, there is a method in which air is sent along a circumferential direction in a cylindrical container by a blower to form a swirling flow, a shortcut fiber is supplied into the swirling flow, and stirring to defibrate.

  The flow rate of the air flow is appropriately selected according to the amount of the shortcut fiber, but is usually in the range of 10 to 150 m / sec.

(Mixing process)
The mixing step is a step of obtaining a web raw material by mixing powder (particles) of cyclodextrin in which a functional component is included and a material in the form of a defibrating shortcut fiber (if included). At this time, any other material can be mixed at the same time. The shape of any other material may be fibrous or particulate. Examples of optional other materials include auxiliary agents added as necessary, such as heat-fusible resins and effect accelerators. There is no particular limitation on the order of addition of these materials, and these materials can be added by, for example, spraying or the like in a step after the mixing step.

  In mixing, in order to improve the dispersibility of the defibrating shortcut fiber, it is preferable to stir the defibrating shortcut fiber and other materials. However, in order to prevent breakage of the defibration shortcut fiber, it is preferable to apply stirring using an air flow instead of stirring using mechanical shearing force.

  The mixing step may be after the defibrating step or at the same time as the defibrating step. When the mixing step is performed simultaneously with the defibration step, the defibration shortcut fiber and an arbitrary material are mixed using an air flow in the defibration step. In addition, cyclodextrin powder (particles) and / or arbitrary particles may be charged and mixed into the web forming line of the defibrating shortcut fiber in the particle dispersion step described later.

(Web formation process)
A web formation process is a process of obtaining an airlaid web from a web raw material by the airlaid method. Here, the airlaid method is a method of forming a web by randomly depositing fibers three-dimensionally using an air flow.

(Particle spraying process)
The particle spraying step is a step of blending a material in the form of powder (particles) into the web raw material by a known method. Either a system in which a material in the form of powder (particles) is mixed with fibers to form a web, or a system in which the material is dispersed on the surface of the web or a carrier sheet may be used.

  In the web forming process in the present embodiment, for example, a web forming apparatus 1 shown in FIG. 2 is used. The web forming apparatus 1 includes a conveyor 10, a gas permeable endless belt 20, a web material supply unit 30, a first carrier sheet supply unit 40, a second carrier sheet supply unit 50, and a suction box 60.

  Here, the conveyor 10 includes a plurality of rollers 11. The air permeable endless belt 20 is mounted on the conveyor 10 and rotates. The web raw material supply means 30 supplies the web raw material to the air permeable endless belt 20 together with the air flow. The first carrier sheet supply means 40 supplies the first carrier sheet 41 toward the gas permeable endless belt 20. The second carrier sheet supply means 50 supplies the second carrier sheet 51 toward the first carrier sheet 41 that has passed through the air-permeable endless belt 20. The suction box 60 sucks the air permeable endless belt 20 from the inside thereof.

  In the web forming apparatus 1, the web raw material supply means 30 is installed above the permeable endless belt 20, the first carrier sheet supply means 40 is installed upstream of the permeable endless belt 20, and the second carrier sheet. The supply means 50 is installed downstream of the air permeable endless belt 20.

  In the web forming process using the web forming apparatus 1, the rollers 10 are rotated in the same direction to drive the conveyor 10 and rotate the air permeable endless belt 20. Further, the first carrier sheet 41 is fed out from the first carrier sheet supply means 40 so as to come into contact with the permeable endless belt 20.

  Next, while sucking the permeable endless belt 20 by the suction box 60, the web material is lowered together with the air flow from the web material supply means 30, and the fiber mixture is dropped onto the first carrier sheet 41 on the permeable endless belt 20. , Deposit. Thereby, the air laid web W is formed.

  Next, the second carrier sheet 51 is supplied from the second carrier sheet supply means 50 on the air laid web W to obtain an air laid web-containing laminated sheet.

(Binding process)
As the binding method, it is preferable to use a thermal bond method from the viewpoint of binding without using water. The binding step by the thermal bond method is a step of heat-treating the air laid web and binding the defibrating shortcut fibers with a heat-fusible resin.

  Examples of the heat treatment of the air laid web include hot air treatment and infrared irradiation treatment, and hot air treatment is preferable from the viewpoint of low cost of the apparatus.

  As the hot air treatment, the air laid web is contacted with a through air dryer provided with a rotating drum having air permeability on the peripheral surface and heat treated (hot air circulating rotary drum method), and the air laid web is passed through a box type dryer. Examples include a method of heat treatment by passing hot air through an air laid web (hot air circulation conveyor oven method).

  When the air-laid web is sandwiched between the first carrier sheet and the second carrier sheet as in the present embodiment to form a laminated sheet, the laminated sheet may be subjected to hot air treatment. The first carrier sheet and the second carrier sheet can be peeled from the air laid web after the hot air treatment. The heat treatment temperature may be a temperature at which the heat-fusible resin melts.

  After the binding step, it may be compressed through a heating roll for the purpose of finely adjusting the thickness and density of the cyclodextrin-containing sheet.

(Use of functional sheet)
Below, the use of the functional sheet which concerns on this invention is illustrated.

  Functional sheet uses include (1) protection, (2) medical, (3) building materials and civil engineering, (4) hygiene, (5) wiper, (6) agriculture and horticulture, (7 ) For household materials, (8) for industrial materials, and (9) for experimental materials.

  (1) Examples of protection include protective equipment. A specific example of the protective article is a mask.

  (2) Examples of medical use include gauze, masks, sheets, antibacterial mats, poultice base cloths, poultice base cloths, and hyperalgesia syndrome treatment agents.

  (3) Examples of building materials and civil engineering include water shielding sheets, protective materials, and anti-corrosion materials.

  (4) Examples of hygiene include diapers, sanitary products, first aid products, cleaning products, towels, masks, and the like. A specific example of the diaper is a paper diaper. Specific examples of the sanitary product include a napkin and a tampon. Specific examples of the emergency supplies include gauze, first-aid plasters, and cotton swabs. Specific examples of the cleansing products include wet tissues, cosmetic cotton, breast milk pads, wiping sheets, sweat absorption sheets (for face, side, neck, feet, etc.), antibacterial / antibacterial sheets, antiviral sheets, Anti-allergen sheets, antibacterial deodorizing sheets, and the like. A specific example of the mask is a disposable three-dimensional mask.

  (5) Examples of wipers include wipers, wet wipers, oil strainers, and copier cleaning materials.

  (6) As agriculture / horticulture, for example, a nursery sheet, a bedding sheet, a defrosting sheet, a herbicidal sheet, a horticultural planter and the like can be mentioned. When used for agriculture and horticulture, for example, it can be used to create an anaerobic environment and perform forcing cultivation.

  (7) Examples of household materials include packaging materials, cleaning products, bags, foods, household goods, kitchenware, sports equipment, beauty materials, and the like. Specific examples of the cleaning article include a wiper, a chemical cloth, and a scrubber. A specific example of the bag is a desiccant bag. Specific examples of the food include tea bags, coffee bags, food bags, freshness maintaining materials, food-absorbing sheets, carbonic acid injection agents, food additives, and the like. Specific examples of the household goods include bathing agents, eye masks, cooling sheets, warming sheets, neck scarves, gloves, deodorizing sheets, and fragrance base materials. Specific examples of the kitchenware include a draining sheet, a fire extinguishing cloth, and the like. A specific example of the sports equipment is a fatigue recovery material. Beauty materials include face masks, puffs, beauty packs, beauty gloves, and the like.

  (8) Examples of industrial materials include industrial materials, electrical materials, batteries, product materials, OA equipment, AV equipment, rolls, equipment members, and the like.

  (9) Examples of the experimental material include an anaerobic environment forming material, an anesthetic agent, and an insect attractant.

  The functional sheet of the present invention is an agricultural material such as an insect attractant, anaerobic environment forming material, anesthetic agent, fatigue recovery material, fragrance base material, insect repellent, antibacterial / antiviral sheet, It can be preferably used in the fields of materials, cosmetics, pharmaceutical parts, pharmaceuticals, cleaning supplies, miscellaneous goods and the like.

(Usage form of functional sheet)
The functional sheet of the present invention is a functional sheet that exhibits a function by a reaction via water when used in a form in which at least a part thereof is in contact with water. The functional sheet of the present invention is particularly preferably used as a water-sucking type functional sheet.

In FIG. 2, the non-limiting example of the usage form of the functional sheet of this invention is shown.
(Functional sheet kit)
As shown in FIG. 2, the functional sheet 1101 according to the present invention and a container 1105 that stores water 1106 for contacting at least a part of the functional sheet 1101 are combined to form a functional sheet kit. be able to.

  According to the kit including the functional sheet and the container for containing water, the functional sheet can be installed without requiring other tools.

  The container 1105 may be in a form containing a material capable of supplying moisture. The material capable of supplying moisture can be, for example, a sponge or non-woven fabric containing water. Moreover, the water accommodated in such a container can be liquid water or can be in the form of a hydrogel. Here, the hydrogel refers to a polymer material containing water, such as agar. A water-containing gel is also a material capable of supplying moisture that can be applied to the present invention. According to this configuration, when the functional sheet is used, it is possible to prevent water from overflowing or dripping from the container, and to reduce the possibility of soiling the surroundings.

  In the case of a two-component functional sheet kit, one functional component may be added to a sponge, a nonwoven fabric or a hydrous gel for the purpose of extending the duration. Thereby, it becomes possible to control the time until the functional component dissolved when the sponge or the nonwoven fabric, the water-containing gel contains water, or the water is included, comes into contact with the other functional component.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention more concretely, this invention is not limited to a following example. In the examples and comparative examples shown below, a carbon dioxide gas generating sheet that generates carbon dioxide by the reaction of carbonate and acid via water was adopted as the functional sheet.

[Example 1]
<Manufacture of carbon dioxide generating sheet>
A carbon dioxide generating sheet was produced as a functional sheet. First, pulp (NBKP) and shortcut core-sheath-type heat-fusible composite fibers (PP / PE composite core-sheath fibers, sheath melting point 130 ° C.) were respectively unwound using a swirling jet airflow defibrating device. The fiber was processed to obtain each defibrated fiber.

  Next, the pulp in the form of defibrated fibers and the heat-fusible conjugate fiber are uniformly mixed by an air flow at a ratio (mass ratio) of 70/30, and the pulp / heat-fusible conjugate fiber (PP / PE) fiber mixture was obtained.

  Citric acid and polyethylene (PE) powder were mixed at a ratio (mass ratio) of 80/20 to obtain a particle mixture of citric acid / PE powder. Similarly, sodium bicarbonate and PE powder were mixed at a ratio (mass ratio) of 80/20 to obtain a particle mixture of sodium bicarbonate / PE powder.

  Next, after a particle mixture of citric acid / PE powder was spread on the carrier sheet, an airlaid web was formed from the fiber mixture using the web forming apparatus 1 shown in FIG.

Specifically, the first carrier made of rayon spunlace nonwoven fabric (basis weight 28 g / m ² ) is formed on the air-permeable endless belt 20 mounted on the conveyor 10 by the first carrier sheet supply means 40. Sheet 41 was fed out.

While sucking the air-permeable endless belt 20 by the suction box 60, a particle mixture of citric acid / PE powder is sprayed on the first carrier sheet 41 so as to be 50 g / m ^2, and the fiber mixture is applied thereon. The fiber mixture was dropped and deposited together with an air flow from the supply means 30 to form an airlaid web. At that time, the fiber mixture was supplied so that the basis weight of the fiber mixture per air-laid web portion was 30 g / m ² .

Next, a particle mixture of sodium bicarbonate / PE powder was sprayed on the airlaid web to 100 g / m ² and deposited. A second carrier sheet 51 made of a rayon spunlace nonwoven fabric (basis weight 28 g / m ² ) was laminated thereon to obtain an airlaid web-containing laminated sheet.

  The obtained laminated sheet was passed through a hot air circulating conveyor oven type box type dryer and subjected to hot air treatment at 140 ° C. to obtain a carbon dioxide generating sheet A.

  The obtained carbon dioxide generating sheet A was cut out so as to be a rectangle of 5 × 10 cm as viewed from above. A plurality of rectangular cuts of 5 mm × 2.5 cm were made at intervals of 1 cm from one long side of the sheet A toward a rectangular virtual center line parallel to the long side. On the other hand, a rectangular cut of 5 mm × 2.5 cm from the other long side of the sheet A toward the virtual center line is provided at intervals of 1 cm, and the cut and long side from the one long side Were placed so as to be alternately arranged in the length direction.

[Example 2]
A carbon dioxide generating sheet B of Example 2 was obtained in the same manner as in Example 1 except that the region removed as the cut portion in Example 1 was subjected to heat sealing treatment instead of being removed to obtain a heat sealing region.

[Comparative Example 1]
A carbon dioxide gas generating sheet of Comparative Example 1 was obtained in the same manner as in Example 1 except that no cut was made. That is, Comparative Example 1 corresponds to the functional sheet substrate of the functional sheet (carbon dioxide generating sheet) of Example 1.

<Evaluation test>
The sheets of Examples 1 and 2 and the comparative example are suspended so that the short side of the rectangle is the lower side and the 1 cm portion from the bottom is immersed in water, and the generation of carbon dioxide gas is maintained by visual evaluation. The time to do was measured.
The measurement results were as follows.

[Example 3]

<Manufacture of odor generating sheets>
An odor generating sheet was produced as a functional sheet. Shortcut core-sheath type heat-fusible composite fiber (PET / low melting point PET composite core-sheath fiber, sheath part melting point 130 ° C.) is defibrated using a swirling jet airflow defibrating device, and defibrated shortcut I got a fiber.

  The cyclodextrin enclosing the ginger component and polyethylene (PE) powder were mixed at a ratio (mass ratio) of 80/20 to obtain a particle mixture of cyclodextrin / PE powder.

  Next, after the particle mixture was dispersed on the carrier sheet, a sheet on which an airlaid web was formed from the fiber mixture was obtained using the web forming apparatus 1 shown in FIG.

Specifically, the first carrier made of rayon spunlace nonwoven fabric (basis weight 28 g / m ² ) is formed on the air-permeable endless belt 20 mounted on the conveyor 10 by the first carrier sheet supply means 40. Sheet 41 was fed out.

While sucking the air-permeable endless belt 20 by the suction box 60, the particle mixture is sprayed onto the first carrier sheet 41 so as to be 20 g / m ^2, and the air mixture flows from the fiber mixture supply means 30 onto the first carrier sheet 41. At the same time, the defibration shortcut fiber was dropped and deposited. At that time, the fiber mixture was supplied so that the basis weight of the shortcut fiber per air-laid web portion was 280 g / m ² .

Next, a second carrier sheet 51 made of a rayon spunlace nonwoven fabric (basis weight 28 g / m ² ) was laminated on the web to obtain an airlaid web-containing laminated sheet.

The obtained laminated sheet was passed through a hot air circulating conveyor oven type box dryer, treated with hot air at 140 ° C., and pressed with a roll press to obtain an odor generating sheet A having a basis weight of 356 g / m ² . JIS P 8125 paper and paperboard The Taber stiffness of the odor-generating sheet C measured according to the Taber stiffness tester method was 6.5 mN · m.

  The obtained odor generating sheet C was punched into a mosquito coil shape to obtain a processed product C-1 having a spiral part length of 50 cm. As shown in FIG. 2 (c), the end part 1cm of the obtained mosquito coil incense stick shaped processed product C-1 is immersed in water so that only the tip part is immersed in water, and after 1 minute and 30 minutes later. The presence or absence of odor after 1 hour, 5 hours, 24 hours and 48 hours was measured.

  As a result, the ginger smell was felt at any measurement timing. Further, the water absorption length from the end liquid surface after 24 hours was 80 mm, and the water absorption length after 48 hours was 100 mm.

  By processing into a spiral shape, a processed product that has a small installation area and emits odor for a long time could be obtained.

[Comparative Example 2]
Uses a fiber mixture in which a shortcut core-sheath type heat-fusible composite fiber (PET / low melting point PET composite core-sheath fiber, sheath part melting point 130 ° C.) and pulp (NBKP) are blended so as to have a ratio of 20/80 Except that, the odor generating sheet D was obtained in the same manner as in the example. JIS P 8125 Paper and paperboard The Taber stiffness of the odor generating sheet D measured according to the Taber stiffness tester method was 0.5 mN · m.

  Although the odor generating sheet D was punched into a mosquito coil shape, the shape could not be maintained.

DESCRIPTION OF SYMBOLS 1 Web formation apparatus 13 Carbonate particle 16 Heat-fusion resin 23 Acid particle 30 Fiber mixture supply means 41 1st carrier sheet 51 2nd carrier sheet A Airlaid web 100 Carbonate layer 120 containing a water-absorbing material 120 Water-absorbing material Carbonate layer 130 not containing carbonate layer 200 Acid layer 220 containing water-absorbing material Acid layer 230 not containing water-absorbing material Acid layer 300, 500 Water-absorbing sheet 400 Film 1101 (A, B, C, D, D1, D2) Functional sheet 1105 Container 1106 Water

Claims (8)

It contains an absorbent material and a functional component, and when used in a form in which at least a part is in contact with water, the functional component exerts its function by sucking up the water and reacting with the water. , Water uptake type functional sheet,
The functional sheet is a water-sucking type functional sheet, characterized in that the functional sheet has an inhibition region in which movement of the water during water siphoning is inhibited.   The functional sheet according to claim 1, wherein the inhibition region is a high-density portion having a higher density than the periphery of the inhibition region in the functional sheet.   The functional sheet according to claim 1, wherein the inhibition region is a perforated portion in the functional sheet.   The functional sheet according to any one of claims 1 to 3, wherein the inhibition region is a cutout portion of the functional sheet.   The functional sheet according to any one of claims 1 to 4, wherein the functional sheet has a plurality of inhibition regions. It contains an absorbent material and a functional component, and when used in a form in which at least a part is in contact with water, the functional component exerts its function by sucking up the water and reacting with the water. , Water uptake type functional sheet,
The functional sheet is configured to have a long water movement distance with respect to the water suction height when water is sucked up.   The functional sheet according to claim 6, wherein the functional sheet is a spiral type.   A functional sheet kit comprising: the functional sheet according to any one of claims 1 to 7; and a container that stores the water for contacting at least a part of the functional sheet.