WO2016163128A1

WO2016163128A1 - Cyclodextrin-containing sheet

Info

Publication number: WO2016163128A1
Application number: PCT/JP2016/001961
Authority: WO
Inventors: さくら本多; 中山　靖章; 稔典広松
Original assignee: 王子ホールディングス株式会社
Priority date: 2015-04-09
Filing date: 2016-04-08
Publication date: 2016-10-13
Also published as: CN107532351B; JPWO2016163128A1; TW201702062A; CN107532351A; KR101973005B1; KR20170119696A; JP6516001B2; TWI642553B

Abstract

Provided is a cyclodextrin-containing sheet which exhibits excellent sustained release performance for a functional component. This cyclodextrin-containing sheet is provided with a cyclodextrin-containing layer in which the functional component is enclosed; and the cyclodextrin-containing layer is formed by a dry process.

Description

Cyclodextrin-containing sheet

The present invention relates to a sheet containing cyclodextrin. The cyclodextrin-containing sheet of the present invention is a sheet for living materials such as a food tray mat, food packaging sheet, beauty sheet, cooling sensation sheet, and insect repellent sheet, a medical use such as a mask, a towel, and an antibacterial / antiviral sheet. It can be used for applications such as sanitary sheets and cleaning sheets.

Cyclodextrins are cyclic oligosaccharides with internal cavities that are hydrophobic on the inside and hydrophilic on the outside, so the ability to incorporate inclusion molecules into the internal cavity in the presence of water to form inclusion complexes Have In addition, cyclodextrin has a sustained release performance that gradually releases molecules incorporated therein. Due to this inclusion complex formation performance and sustained release performance, cyclodextrins are used in various fields such as the food field, cosmetics / toiletries field, pharmaceutical parts field, cleaning products field, clothing field / miscellaneous goods.

For example, Patent Document 1 discloses a water-soluble cyclodextrin film that includes an antibacterial agent or insect repellent that can be used on the inner surface of food wrapping or storage containers. In Patent Document 1, a cyclodextrin solution to which an antibacterial agent or insect repellent is added is applied to a substrate surface such as glass, plastic, paper, and nonwoven fabric by means of spraying or brushing, and dried. A water-soluble cyclodextrin film has been obtained.

Japanese Patent Laid-Open No. 2002-29901

However, in Patent Document 1, a film is formed using a water-soluble cyclodextrin aqueous solution having an antibacterial agent or insect repellent added thereto. In the case of this forming method, since the antibacterial agent or insect repellent can enter and exit the cyclodextrin internal cavity in the aqueous solution, when the film is formed, the total amount of the antibacterial agent or insect repellent added to the aqueous solution is It cannot be said that it is included in the film in the state of being included in cyclodextrin. In the formed film, it is considered that the antibacterial agent or insect repellent which is not included in the cyclodextrin is released from the film at an early stage as compared with the case where it is included.

An object of the present invention is to provide a cyclodextrin-containing sheet excellent in sustained release performance of functional components.

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

[1] A cyclodextrin-containing sheet comprising a cyclodextrin-containing layer in which a functional component is included, and the cyclodextrin-containing layer is provided by a dry method.

[2] The cyclodextrin-containing layer contains fibers,
The cyclodextrin-containing sheet according to [1], wherein the cyclodextrin powder is held in voids formed by the fibers.

[3] The cyclodextrin-containing layer contains a heat-fusible resin A,
The cyclodextrin-containing layer is obtained by melting the heat-fusible resin A in a mixture containing the cyclodextrin powder and the heat-fusible resin A [1] or [ The cyclodextrin-containing sheet according to 2].

[4] The layer adjacent to the cyclodextrin-containing layer contains the heat-fusible resin B,
The layer adjacent to the cyclodextrin-containing layer is obtained by disposing the heat-fusible resin B on the surface of the cyclodextrin-containing layer and melting the heat-fusible resin B with heat. The cyclodextrin-containing sheet according to any one of [1] to [3].

[5] The cyclodextrin-containing sheet according to any one of [1] to [4], which is heat-sealed.

[6] The cyclodextrin-containing sheet according to any one of [1] to [5], wherein an adhesive layer is provided adjacent to the cyclodextrin-containing layer.

[7] The cyclodextrin-containing sheet according to any one of [1] to [6], which is embossed.

[8] In any one of [3] to [7], in the cyclodextrin-containing layer, the cyclodextrin powder is fixed partially covered with the heat-fusible resin A. The cyclodextrin-containing sheet as described.

[9] In any one of [4] to [7], in the cyclodextrin-containing layer, the cyclodextrin powder is fixed partially covered with the heat-fusible resin B. The cyclodextrin-containing sheet as described.

[10] The cyclodextrin-containing layer according to any one of [1] to [9], wherein in the cyclodextrin-containing layer, the cyclodextrin powder is substantially uniformly distributed in an in-plane direction and a thickness direction. Sheet.

[11] The cyclodextrin-containing layer according to any one of [1] to [9], wherein the cyclodextrin powder is unevenly distributed in at least one of an in-plane direction and a thickness direction. Cyclodextrin-containing sheet.

The cyclodextrin-containing sheet of the present invention is a sheet provided with 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 invention, since the cyclodextrin-containing layer is provided by a dry method, the cyclodextrin in which the functional component is included can be included in the sheet without using water. Therefore, the functional component can be included in the sheet while being included in the cyclodextrin, and the functional component in the manufactured sheet is gradually released by contact with moisture due to the sustained release performance of the cyclodextrin. Can be done. As a result, the sheet of the present invention is excellent in the sustained release performance of the functional component, and can exhibit a good functional component release performance even if a certain amount of time has elapsed after the production of the sheet. Moreover, since the cyclodextrin which released | released the functional component can include other components, it can exhibit a deodorizing function, for example.

Further, in the present invention, the cyclodextrin-containing layer is provided by a dry method, so that the cyclodextrin can maintain its form as it is added to the sheet in the sheet. Since cyclodextosine can be contained in the sheet without dissolving it, it is possible to increase the amount of cyclodextrin in the sheet. Moreover, since the component included by cyclodextrin can be mix | blended without making it contact with water, it can prevent that an inclusion component transfers to water from a cyclodextrin, or volatilizes. In addition, cyclodextrin can be easily localized at any site in the in-plane direction and thickness direction of the sheet.

It is a figure which shows the structural example of the cyclodextrin containing sheet | seat of this invention. It is a figure which shows the example of the layer structure suitable for each use of the cyclotextrin containing sheet | seat of this invention. It is a schematic diagram which shows the web formation apparatus which can be used in the manufacturing method of the cyclodextrin containing sheet | seat of this invention.

(Cyclodextrin-containing sheet)
The cyclodextrin-containing sheet of the present invention is a sheet provided with 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.

Referring to FIG. 1, the structure of a cyclodextrin-containing sheet included in the scope of the present invention will be described. FIG. 1 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.

1 (a) to 1 (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. 1 (a) is a cyclodextrin-containing sheet consisting only of the cyclodextrin-containing layer 100. FIGS. 1B and 1C show a cyclodextrin-containing sheet in which another layer 300 is laminated on one side or both sides of a cyclodextrin-containing layer 100.

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.

In addition, the cyclodextrin-containing layer 100 may contain fibers, a heat-fusible resin, an additive, 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 examples of the configuration for preventing cyclodextrin C in which the functional component is included from the cyclodextrin-containing sheet from falling off.

(First aspect)
FIG. 1D 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 a heat-fusible resin, an additive, and the like in addition to the cyclodextrin C and the fibers F in which the functional component is included. 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).

That is, the cyclodextrin-containing sheet according to the first aspect of the present invention is a single-layer structure or a multilayer structure including a cyclodextrin-containing layer including a cyclodextrin in which a functional component is included and fibers. In the cyclodextrin-containing layer, the cyclodextrin powder in which the functional component is included can be held in the voids formed by the fibers constituting the cyclodextrin-containing layer. Such a form can be realized by a dry method such as an airlaid method. The cyclodextrin powder in which the functional component is included can be distributed over the whole or part of the cyclodextrin-containing layer. That is, the cyclodextrin powder in which the functional component is included can be distributed substantially uniformly in the in-plane direction and the thickness direction in the cyclodextrin-containing layer. Alternatively, the cyclodextrin powder in which the functional component is included may be ubiquitously present in the cyclodextrin-containing layer in at least one of the in-plane direction and the thickness direction. The distribution of cyclodextrin powder in the cyclodextrin-containing layer should be set appropriately according to the raw material preparation method (mixing or non-mixing of raw materials), spraying order, spraying position, etc. Can be controlled.

(Second aspect)
FIG. 1E 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 the functional component is included. Further, the cyclodextrin-containing layer 120 containing the heat-fusible resin A contains fibers, additives, and the like in addition to the cyclodextrin C and the heat-fusible resin A in which the functional component is included. 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.

That is, the cyclodextrin-containing sheet according to the second aspect of the present invention is a single-layer structure or multilayer structure comprising a cyclodextrin-containing layer containing a cyclodextrin in which a functional component is included and a heat-fusible resin. Is the body. In the cyclodextrin-containing layer, the cyclodextrin in which the functional component is included is fixed in a state where a part thereof is coated with the heat-fusible resin. The cyclodextrin containing the functional component in the cyclodextrin-containing layer can have a powder form.

(Third aspect)
FIG. 1 (f) 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. Further, the layer 200 containing the heat-fusible resin B may contain fibers, additives, and the like in addition to the heat-fusible resin B. 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. 1 (f) includes a layer 200 containing the heat-fusible resin B and a cyclodextrin-containing layer 100 composed 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 sides 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.

That is, the cyclodextrin-containing sheet according to the third aspect of the present invention includes a layer containing a heat-fusible resin and a cyclodextrin-containing layer containing a cyclodextrin enclosing a functional component adjacent thereto. It is a multilayer structure. In the cyclodextrin-containing layer, the cyclodextrin in which the functional component is included is fixed in a state where a part thereof is coated on the heat-fusible resin derived from the layer containing the adjacent heat-fusible resin. Can be. In the cyclodextrin-containing layer, the cyclodextrin in which the functional component is included can have a powder form. Further, in the entire cyclodextrin-containing sheet of this embodiment, the cyclodextrin in which the functional component is included is unevenly distributed in the thickness direction.

(Fourth aspect)
The cyclodextrin-containing sheet according to the present invention may be formed by a sealing process such as a heat sealing process or an ultrasonic sealing process. As an example, FIG. 1 (g) 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.

In other words, the cyclodextrin-containing sheet according to the fourth aspect of the present invention is positioned in the two outer layers (other layers 300) that are partially fused and the unfused portion between the two outer layers. And a cyclodextrin-containing layer 100 in which a functional component is included. Such a form can be easily realized by sealing.

In the example of FIG. 1 (g), since the four sides are fused, a bag-shaped portion is formed between the two outer layers. The bag-like portion may include a cyclodextrin-containing layer 100 in which a functional component is included.

The bag-like portion can be sealed by continuously fusing the four sides. For example, in the case where the cyclodextrin-containing layer 100 in which the functional component is included is composed of only the cyclodextrin powder in which the functional component is included, the powder is contained within the sealed bag-shaped portion. It can exist in its form. At this time, the powder can flow without being fixed in the position of the sealed bag-like portion.

The position of the sealing process can be set as appropriate. For example, a sealing process may be applied to the central portion of the sheet in addition to the four sides of the sheet, for example, in a linear manner, so that the bag-shaped portion is divided into a plurality of continuous or non-continuous sections. The cyclodextrin-containing layer 100 in which the functional component is included can be dispersed and disposed in the plurality of compartments.

(5th aspect)
FIG. 1 (h) 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, in the cyclodextrin-containing sheet shown in FIG. 1 (h), a hot-melt adhesive such as a thermoplastic resin is provided 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. 1 (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. 1 (h), the cyclodextrin-containing layer 120 containing the heat-fusible resin A is positioned as an intermediate layer as in the case of the example shown in FIG. 1 (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.

That is, the cyclodextrin-containing sheet according to the fifth aspect of the present invention includes an adhesive layer having an adhesive function such as an adhesive, and a cyclodextrin-containing layer that includes a cyclodextrin that includes a functional component that is adjacent to the adhesive layer. Are multilayer structures. In the cyclodextrin-containing layer, the cyclodextrin in which the functional component is included can be fixed in the cyclodextrin-containing sheet by the adhesive function of the adjacent adhesive layer. In the cyclodextrin-containing layer, the cyclodextrin in which the functional component is included can have a powder form. Further, in the entire cyclodextrin-containing sheet of this embodiment, the cyclodextrin in which the functional component is included is unevenly distributed in the thickness direction.

(Sixth aspect)
The above-mentioned cyclodextrin-containing sheet according to the present invention may be formed by embossing. As an example, FIG. 1 (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 other words, the cyclodextrin-containing sheet according to the sixth aspect of the present invention includes two partially fused outer layers (another layer 300) and a plurality of unfused portions between the two outer layers. And a cyclodextrin-containing layer 100 in which a functional component is included. An uneven pattern may be formed on at least one surface. Such a form can be easily realized by embossing.

In the above, the structure of the cyclodextrin containing sheet | seat of this invention was demonstrated using Fig.1 (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.

Details of the components of the cyclodextrin-containing sheet according to the present invention will be described below.

(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 additive, and the like in addition to the cyclodextrin in which the functional component is included. . 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 It can be used in consideration of the compatibility with the structure and functional components. 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.

The functional component that can be used in the present invention may be a synthetic component or a component extracted from a natural product. For example, wasabi ingredients, mustard ingredients, pepper ingredients, ginger ingredients, lemon ingredients, orange ingredients, grapefruit ingredients, yuzu ingredients, ume ingredients, matcha ingredients, almond ingredients, natural meat flavors, roses, herbs and other extract ingredients, plant extract extracts And natural antibacterial agents or fragrances such as tea extracts, natural or organic volatile antibacterial agents or fragrances such as l-menthol ingredients, and cosmetic raw materials such as coenzyme Q10, isoflavones, and vitamins.

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, antihypertensives, antihypertensive diuretics, antibiotics, anesthetics, antibacterial agents, antiepileptics, coronary vasodilators, crude drugs, adjuvants, moisturizers , Antidiarrheal, keratin softening release agent, antiseptic disinfectant, fat-soluble substance, deodorant ingredient Known compounds such as repellents, 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, soft and / or conifer chemical pulp, semi-chemical pulp, mechanical pulp, and waste paper pulp), natural fibers such as hemp, cotton, silk, wool, mineral fibers, and regenerated fibers such as rayon. , Synthetic fibers such as polylactic acid, nylon, polyvinyl alcohol (PVA), and polymer-absorbing 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 in the form of fibers or particles. 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, polybutylene succinate, and the like.

The heat-fusible resin may be a composite of two or more types 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 types 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. In addition, resin powder may be dispersed between other layers for the purpose of improving adhesiveness and heated, or an arbitrary adhesive layer such as a hot melt resin layer or an adhesive layer may be provided.

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, paper, or the like 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, the released functional component can be prevented 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.

(Additive)
In the cyclodextrin-containing sheet of the present invention, an additive having one or a plurality of effects can be blended depending on the application. The additive may include an agent that supplements the effect of the functional component of the present invention and promotes the effect of the present invention (for example, a so-called effect promoter). It may be an agent containing a component that does not show an action

Examples of additives include: oily bases, moisturizers, feel improvers, surfactants, polymers, thickening / gelling agents, solvents, propellants, antioxidants, reducing agents, oxidizing agents, preservatives, 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 promotion Agent, stimulant, hormones, anti-wrinkle agent, anti-aging agent, squeeze agent, cooling sensation agent, warming sensation agent, wound healing promoter, stimulation relaxation agent, analgesic agent, cell activator, plant / animal / microbe extract, Antipruritics, exfoliating / dissolving agents, antiperspirants, refreshing agents, astringents, enzymes, nucleic acids, fragrances, dyes, colorants, dyes, pigments, metal-containing compounds, unsaturated monomers, polyhydric alcohols, polymers Additive, anti-inflammatory analgesic, antifungal, antihistamine, hypnotic sedative, tranquilizer, anti Blood pressure agent, antihypertensive diuretic, antibiotic, anesthetic agent, antibacterial agent, antiepileptic agent, coronary vasodilator, herbal medicine, adjuvant, wetting agent, astringent, thickener, tackifier, antidiarrheal agent, keratin Examples include softening release agents, oily raw materials, UV blockers, antiseptic disinfectants, antioxidant substances, liquid matrices, fat-soluble substances, polymer carboxylates, additives, metal soaps, and water-absorbing materials. 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. Moreover, you may mix | blend the additive of a liquid form with the solid form as the particle | grains made to contain in a capsule.

Additives can be blended in the cyclodextrin-containing

layers

100, 110, 120 in which the functional component is 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 a carbon dioxide gas during use. By generating carbon dioxide, the functional component included in the cyclodextrin is efficiently released together with the carbon dioxide.

(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 sides, a cyclodextrin-containing sheet having a multilayer structure can be formed.

(Ultrasonic seal)
Ultrasonic sealing is a method of bonding between layers by ultrasonic vibration and pressure. Similar to heat sealing, the layer 200 having ultrasonic sealability is disposed on both sides of the cyclodextrin-containing layer, and the four-sided cyclodextrin-containing sheet can be formed by ultrasonically sealing the four sides.

(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.

As a thermoplastic resin that can be used for hot-melt processing, for example, ethylene / vinyl acetate copolymer (EVA) is known. In addition, a resin generally known as a hot melt adhesive such as a synthetic rubber type, a polyester type, a polyamide type, a polyurethane type, an acrylic type, or an olefin type 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 defibration 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 the 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 stream, for example, a method of putting a shortcut fiber into a blower and defibrating with a 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 arbitrary other materials include heat-fusible resins, auxiliaries added as necessary, and the like. 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 forming 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. 3 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 is composed of 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 conveyor 10 is driven by rotating the rollers 11 in the same direction to 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.

The heat treatment of the air laid web includes 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.

(Function and effect)
In the production method described above, the cyclodextrin powder (particles) in which the functional component is included is contained in the cyclodextrin-containing layer in which the functional component is included in the form of the powder (particle) without using water. Can be contained. Therefore, there are few functional components released from the internal cavity of cyclodextrin during the production process, and as a result, the produced cyclodextrin-containing sheet exhibits good sustained release performance.

(Use of cyclodextrin-containing sheet)
Below, the use of the cyclodextrin containing sheet | seat which concerns on this invention is illustrated.

Uses of cyclodextrin-containing sheets include (1) for clothing, (2) for protection, (3) for medical use, (4) for building materials, (5) for civil engineering, (6) for vehicles, (7) for hygiene , (8) furniture / interior, (9) wiper, (10) filter, (11) bedding, (12) agriculture / horticulture, (13) leather, (14) household materials, (15 ) For industrial materials.

(1) Examples of clothing include clothing members, disposable clothing (also referred to as disposable clothing), shoes, emblems, gloves, slippers, and hats. Specific examples of the clothing member include an interlining, an adhesive interlining, a cotton pad, a bra pad, a shoulder pad, a jumper liner, and the like. Specific examples of the disposable clothing include event jumpers and travel underwear. Specific examples of the shoe include an insole material and a fishing leather bottom.

(2) Examples of protective devices include protective clothing and protective equipment. Specific examples of the protective clothing include work clothes, experimental clothes, and protective clothes. Specific examples of the protective article include safety shoes, work gloves, smoke masks, dust masks, and gas masks.

(3) For medical use, for example, gauze, surgical clothes, covering cloth set, bat for birth, cap, mask, sheets, antibacterial mat, poultice base cloth, poultice base cloth, cast material, leukocyte separator, Examples include artificial skin.

(4) For building materials, for example, roofing, tufts, carpet base fabrics, anti-condensation sheets, temperature control sheets, humidity control sheets, wall coverings, heat insulating materials, moisture absorption materials, soundproof materials, sound absorption materials, vibration isolation materials, Wood materials, curing sheets, etc. are listed.

(5) For civil engineering, for example, drain material, filter material, suction prevention material, separation material, water shielding sheet, reinforcement material, protection material, concrete reinforcement sheet, asphalt overlay material, underground pipe repair material, prevention Examples include touch materials.

(6) Examples of vehicles include automobile interior materials and automobile parts. Specific examples of the automobile interior material include a floor mat, a door rim, a trunk mat, a ceiling material, a rear parcel, a lining cloth, a headrest, a bonnet cover, a sound absorbing material, and a vibration isolating material. Specific examples of the automobile parts include an air cleaner, an oil cleaner, an indoor cleaning filter, and an outside air intake filter.

(7) Examples of hygiene include diapers, sanitary products, first aid products, cleaning products, towels, and masks. Specific examples of the diaper include a paper diaper and a diaper cover. 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.

(8) Examples of furniture / interior use include carpets, flooring, curtains, furniture parts, joinery, wallpaper, and ornaments. Specific examples of the carpet include a carpet, a carpet base cloth, a tile carpet, an electric carpet, a mat base cloth, and an under carpet. Specific examples of the furniture parts include cushioning materials and filling cotton in reception chairs. Specific examples of the joinery include shoji paper, folds, tatami mats, blinds, and the like. Specific examples of the decorative article include a pennant, a roll screen, and artificial flowers.

(9) Examples of wiper use include wipers, wet wipers, oil strainers, and copier cleaning materials.

(10) As filters, for example, air filters, bag filters, liquid filters, electret filters, vacuum cleaner filters, filter press filters, wastewater treatment mats, salt removal filters, gas adsorption filters, household air Examples include clean filters and filters for water purifiers. Specific examples of the air filter include those for coarse dust, medium-high performance, and ultra-high performance.

(11) Examples of bedding include futons, pillow covers, and sheets. Specific examples of the futon include a futon batting and a futon bag.

(12) Examples of the agricultural / horticultural use include a nursery sheet, a bedding sheet, a defrosting sheet, a herbicidal sheet, and a gardening planter.

(13) Examples of leather include artificial leather base fabric, synthetic leather base fabric, and PVC leather base fabric.

(14) Examples of household materials include storage products, packaging materials, cleaning products, bags, foods, household goods, kitchenware, table tops, office supplies, sports equipment, handicraft goods, DIY sheets, DIY boards , Iron mats and beauty materials. Specific examples of the storage article include a storage bag, a suit cover, and an insect cover. Specific examples of the packaging material include furoshiki and packaging. Specific examples of the cleaning article include a chemical cloth and a scrubber. Specific examples of the bag include a chemical warmer, a desiccant bag, and a shopping bag. Specific examples of the food include tea bags, coffee bags, food bags, freshness-preserving materials, and food-absorbing sheets. Specific examples of the household goods include a calendar, a non-slip sheet, an eye mask, a cooling sensation sheet, a warming sensation sheet, a neck scarf, gloves, a book cover, a deodorizing sheet, and a fragrance base material. Specific examples of the kitchen utensils include draining sheets, cooking paper, scrubbers, roll towels, fire extinguishing cloths, and the like. Specific examples of the table top include a table cloth, a place mat, and a coaster. Specific examples of the office supplies include a stamp pad, a felt pen core, a bulletin board, a blackboard eraser, and an envelope. Specific examples of the sports equipment include a golf club head cover and a tennis grip. Beauty materials include face masks, puffs, beauty packs, beauty gloves, and the like.

(15) Examples of industrial materials include industrial materials, electrical materials, batteries, product materials, OA equipment, AV equipment, rolls, equipment members, musical instruments, packaging materials, and the like. Specific examples of the industrial materials include abrasives, oil absorbing materials, papermaking felts, heat-resistant cushions, draining materials, heat insulating materials, soundproofing materials, vibration-proofing materials, and the like. Specific examples of the electrical material include an electrical insulating material, a printed circuit board substrate, an electromagnetic shielding material, a static electricity removing sheet, and a wire holding tape. Specific examples of the battery include a separator. Specific examples of the product material include FRP (fiber reinforced plastic) base material, tape, printing base fabric, synthetic paper, electrostatic recording paper, adhesive tape, thermal transfer sheet, radiation shielding mat, and the like. Specific examples of the OA device include a disc liner and a packaging material. Specific examples of the AV device include a speaker diaphragm and a sound absorbing plate. Specific examples of the roll include a buffalo, a coating roll, and a squeezed roll. Specific examples of the device member include a V belt, a conveyor belt, and a timing belt. Specific examples of the musical instrument include a piano key cushion and a hammer rail. Specific examples of the packaging material include a packaging material for dry ice and packing.

The cyclodextrin-containing sheet of the present invention is a medical material such as a food tray mat, a food packaging sheet, a beauty sheet, a sheet for life material such as an insect repellent sheet (above (14)), and an antibacterial / antiviral sheet. Sanitary sheets (above (3), (7), etc.), protective masks, medical and sanitary sheets (above (2), (3), (7) etc.), cleaning sheets (above (7) ), (9), (10), etc.), and hygiene sheets such as hand towels (above (7), etc.). Moreover, the same cyclodextrin-containing sheet can be used in various fields and applications without being limited to the above classification.

(Example of layer structure suitable for each use of cyclotexturin-containing sheet)
With reference to FIG. 2, the example of the layer structure suitable for each use of the cyclotextrin containing sheet | seat of this invention is shown. This is for illustrative purposes only and does not limit the invention. In addition, the same code | symbol shows the same structure.

FIG. 2 (a) shows an example of a general-purpose configuration that can be suitably used in any application. Specifically, in FIG. 2 (a), a cyclodextrin-containing layer 1010 containing cyclodextrin C and a heat-fusible resin A in which functional components are included, and a nonwoven fabric 3010 disposed on both sides thereof are shown. A layer structure consisting of is shown.

In this example, the nonwoven fabric 3010 is formed by a dry method using wood pulp as a main raw material. The nonwoven fabric 3010 may be formed into a sheet by, for example, depositing raw materials using the airlaid method and bonding the raw material by spraying a binder onto the surface. As such a nonwoven fabric, for example, Kinocloth (registered trademark) manufactured by Oji Kinocloth Co., Ltd. can be used. Such a nonwoven fabric has a low web density and is excellent in liquid retention, filterability, bulkiness, and the like. Therefore, it is easy to pass moisture at the time of use, and has a high performance for retaining moisture, which is preferably used.

FIG. 2B shows an example of a configuration that can be suitably used for a cooling sensation sheet. Specifically, FIG. 2B shows a cyclodextrin-containing layer 1010 containing cyclodextrin C and a heat-fusible resin A in which a functional component is included, and a nonwoven fabric disposed on one surface thereof. A layer configuration including 3010 and a non-woven fabric 3020 and a tissue 3030 arranged in this order on the other surface is shown.

In this example, the nonwoven fabric 3020 disposed between the cyclodextrin-containing layer 1010 and the tissue 3030 may include, for example, pulp and synthetic fibers, and the synthetic fibers include polymer-absorbing fibers (SAF). You may go out. Therefore, the layer of the nonwoven fabric 3020 has high moisture absorption and retention. Here, the cyclodextrin-containing layer 1010 may be present as a layer placed on the surface of the nonwoven fabric 3020, or may be present in a form in which a part or all of it is embedded between the fibers constituting the nonwoven fabric 3020. . That is, the cyclodextrin-containing layer 1010 and the nonwoven fabric 3020 may exist separately or may have overlapping portions in the thickness direction of the cyclotexturin-containing sheet. In addition, the tissue 3030 layer, which is an outer layer, is thin and has a low density, and thus has good moisture permeability. Furthermore, the tissue 3030 can provide a soft touch. Moreover, the layer of the nonwoven fabric 3010 which is the other outer layer can provide a soft touch. In addition, since the nonwoven fabric 3010 has high liquid retention, it has an effect of gradually experiencing the effect of adding cyclodextrin C. Therefore, the sheet having such a configuration is preferably used for an application to be applied to the skin, and the effect tends to be easily expressed and tends to be sustained.

FIG. 2C shows an example of a configuration that can be suitably used for a cooling sensation sheet, a sanitary sheet, a wiper, and the like. Specifically, FIG. 2C shows a cyclodextrin-containing layer 1020 containing fibers in addition to the cyclodextrin C and the heat-fusible resin A in which the functional component is included, and is disposed on both sides thereof. A layer structure comprising a tissue 3030 is shown.

In this example, the cyclodextrin-containing layer 1020 is a non-woven fabric layer that includes pulp and synthetic fibers as the fibers, and the synthetic fibers may include polymer-absorbing fibers (SAF). Therefore, the cyclodextrin-containing layer 1020 has high moisture absorption and retention. In addition, the tissue 3030 layer, which is an outer layer, is thin and has a low density, and thus has good moisture permeability. Furthermore, the tissue 3030 can provide a soft touch. Therefore, the sheet having such a configuration is preferably used for an application to be applied to the skin, and the effect tends to be easily expressed and tends to be sustained. In addition, a layer other than tissue can be used as the outer layer, and front and back surfaces can be further provided on the tissue. For example, a layer for preventing the outflow of moisture can be provided on one side. Layer 1020 can contain particles in voids formed by the fibers. Therefore, since the layer 1020 can hold particles in the layer without using a resin as a binder, the layer 1020 may or may not contain the heat-fusible resin A. When the heat-fusible resin A is included, there is an effect of reducing powder falling off.

FIG. 2 (d) shows an example of a configuration that can be suitably used for a sweat pad or the like. Specifically, FIG. 2 (d) shows a cyclodextrin-containing layer 1030 containing an additive Y in addition to the cyclodextrin C, the heat-fusible resin A and the fiber in which the functional component is included, and one of them. A layer configuration consisting of an arbitrary non-woven fabric 3040 disposed on the surface and a film 3050 disposed on the other surface is shown.

In this example, the cyclodextrin-containing layer 1030 is a non-woven fabric layer that includes pulp and synthetic fibers as the fibers, and the synthetic fibers may include polymer-absorbing fibers (SAF). Therefore, the cyclodextrin-containing layer 1030 has high moisture absorption and retention. In this example, the cyclodextrin-containing layer 1030 may contain the additive Y. Additive Y may be any inorganic pigment such as zeolite, activated carbon, silica, and the like. By selecting a material having antibacterial and absorbent properties as the additive Y, the effect of the cyclodextrin-containing sheet used for applications such as a sweat pad can be promoted.

Since the layer of the film 3050 that is the outer layer does not pass or hardly passes moisture, by applying the surface of an arbitrary nonwoven fabric 3040 that is the other outer layer to the application site such as human skin, Additives can be made to act effectively and release of the absorbed liquid such as sweat from the opposite surface can be prevented. Note that a non-woven fabric with high water repellency may be used instead of the film 3050, and an adhesive layer may be provided on the outer side (the side opposite to the layer 1030) of the film 3050 and used by being attached to clothing.

FIG. 2 (e) shows an example of a configuration that can be suitably used for a cleaning sheet or the like. Specifically, FIG. 2 (e) shows a cyclodextrin-containing layer 1040 containing cyclodextrin C, a heat-fusible resin A, fibers, and an additive Z in which functional components are included, and one surface thereof. The layer structure which consists of arbitrary layers 3060, such as a nonwoven fabric and a film | membrane arrange | positioned by this, is shown.

In this example, the cyclodextrin-containing layer 1040 is a non-woven fabric layer and includes synthetic fibers as fibers. When synthetic fiber is used as the main raw material, a sheet having high sheet strength and good scraping performance (performance for scraping off solid matter) can be provided. Synthetic fibers may contain polymer-absorbing fibers (SAF) for the purpose of improving liquid absorbency and liquid retention, and may contain water-absorbing fibers such as pulp for the purpose of improving liquid absorbency. In this example, the cyclodextrin-containing layer 1040 may contain the additive Z. Additive Z may be any cleaning component such as citric acid or baking soda. By selecting a cleaning component as the additive Z, the effect of the cyclodextrin-containing sheet used for a cleaning sheet or the like can be promoted. As one variation, the cyclodextrin-containing layer 1040 may be provided with a sheet such as a water-permeable or breathable nonwoven fabric on the surface opposite to the layer 3060.

Although the configuration examples have been described above, the present invention is not limited to these configurations.

Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples.

[Example 1]
<Manufacture of cyclodextrin-containing sheet>
Short-sheathed rayon fiber (fineness 3.3 dtex, fiber length 5 mm) and short-sleeved core-sheath composite fiber (PET / PE) whose core is polyethylene terephthalate (PET) and whose sheath is polyethylene (PE) The composite core-sheath fiber, the fineness of 3.3 dtex, the fiber length of 5 mm, and the sheath part melting point of 130 ° C. were each defibrated using a swirling jet airflow defibrating device to obtain respective defibrating shortcut fibers. .

Next, the rayon fiber in the form of a defibration shortcut fiber and the heat-fusible composite fiber in the form of a defibration shortcut fiber are uniformly mixed at a ratio (mass ratio) of 70/30 by an air flow, and rayon / ( PET / PE) fiber mixture (web raw material) was obtained.

The material M in which the ginger component was included in cyclodextrin and polyethylene (PE) powder were mixed at a ratio (mass ratio) of 80/20 to obtain a particle mixture of the material M / PE powder.

Next, after a particle mixture of the material M / PE powder was sprayed 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, a first carrier sheet 41 made of tissue (basis weight 14 g / m ² ) is placed on the air-permeable endless belt 20 mounted on the conveyor 10 by the first carrier sheet supply means 40. I paid out.

While sucking the air-permeable endless belt 20 by the suction box 60, the particle mixture of the material M / PE powder is sprayed on the first carrier sheet 41 so as to be 30 g / m ^2, and the web raw material is applied thereon. The fiber mixture was dropped and deposited together with the air flow from the supply means 30. At that time, the fiber mixture was supplied so that the basis weight of the shortcut fiber per air-laid web portion was 230 g / m ² . A second carrier sheet 51 made of tissue (basis weight 14 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 conveyer oven type box type dryer and treated with hot air at 140 ° C. to obtain a cyclodextrin-containing sheet having a basis weight of 288 g / m ² .

[Example 2]
The shortcut rayon fiber is changed to a softwood chemical pulp, and using an airlaid web forming apparatus, a softwood chemical pulp and a core-sheath type heat-sealable composite fiber (PET / PE composite core-sheath fiber) are 70/30. A cyclodextrin-containing sheet was obtained in the same manner as in Example 1 except that an airlaid web was formed while uniformly mixing in air at a ratio (mass ratio). The basis weight of the obtained cyclodextrin-containing sheet was 288 g / m ² .

[Example 3]
Changed the shortcut rayon fiber to PET fiber (fineness 3.3dtex, fiber length 5mm, melting point 260 ° C), and heat-sealable composite fiber to high density polyethylene fiber (fiber length 1.5mm, melting point 120 ° C) A cyclodextrin-containing sheet was obtained in the same manner as in Example 1 except that an airlaid web was formed while mixing these fibers uniformly in air at a ratio (mass ratio) of 50/50. The basis weight of the obtained cyclodextrin-containing sheet was 288 g / m ² .

[Example 4]
A cyclodextrin-containing sheet was obtained in the same manner as in Example 3 except that the particle mixture of the material M / PE powder was sprayed so as to be 5 g / m ² . The basis weight of the obtained cyclodextrin-containing sheet was 263 g / m ² .

[Example 5]
Instead of spraying the particle mixture of the material M / PE powder on the carrier sheet, the material M in which the ginger component is included is mixed with the fiber mixture together with the air flow from the web raw material supply means 30 so as to be 24 g / m ^2. The cyclodextrin-containing sheet was obtained in the same manner as in Example 3, except that the first and second carrier sheets were PET spunbonded (basis weight 15 g / m ² ). The basis weight of the obtained cyclodextrin-containing sheet was 284 g / m ² .

[Example 6]
Change the shortcut PET fiber to coniferous chemical pulp, and mix the coniferous chemical pulp and high-density polyethylene fiber uniformly in the air at a 50/50 ratio (mass ratio) using an airlaid web forming device. A cyclodextrin-containing sheet was obtained in the same manner as in Example 5 except that an airlaid web was formed. The basis weight of the obtained cyclodextrin-containing sheet was 284 g / m ² .

[Example 7]
A first carrier sheet 41 made of a PET spunbonded nonwoven fabric (15 g / m ² ) was fed out by the first carrier sheet supply means 40 on the air-permeable endless belt 20 mounted on the conveyor 10 and running.

While sucking the air-permeable endless belt 20 with the suction box 60, 24 g / m ² of the material M enclosing the ginger component was sprayed on the first carrier sheet 41.

Next, a second carrier sheet 51 made of a PET spunbonded nonwoven fabric (15 g / m ² ) was laminated to obtain a laminated sheet.

The obtained laminated sheet was heat-pressed with an uneven embossing roll to obtain a cyclodextrin-containing sheet having a basis weight of 54 g / m ² .

[Example 8]
A cyclodextrin-containing sheet was obtained in the same manner as in Example 7 except that the four sides of the laminated sheet were heat-sealed. The basis weight of the obtained cyclodextrin-containing sheet was 54 g / m ² .

[Example 9]
Instead of spraying the particle mixture of the material M / PE powder on the first carrier sheet 41, spray the material M on the air laid web so that the material M becomes 24 g / m ^2, and 5 g of the EVA adhesive. / m ² and so as to melt extrusion to obtain a cyclodextrin-containing sheet except that stuck with PE film (26 g / m ²⁾ in the same manner as in example 2. The basis weight of the obtained cyclodextrin-containing sheet was 299 g / m ² .

[Example 10]
A cyclodextrin-containing sheet was obtained in the same manner as in Example 1 except that the material N in which the wasabi component was included in the cyclodextrin was used instead of the material M in which the ginger component was included in the cyclodextrin. The basis weight of the obtained cyclodextrin-containing sheet was 288 g / m ² .

[Example 11]
A cyclodextrin-containing sheet was obtained in the same manner as in Example 1 except that material Q in which 1-menthol component was included in cyclodextrin was used instead of material M in which the ginger component was included in cyclodextrin. The basis weight of the obtained cyclodextrin-containing sheet was 288 g / m ² .

[Example 12]
Instead of the material M in which the ginger component is included in the cyclodextrin, the material Q in which the l-menthol component is included in the cyclodextrin is used, and the shortcut rayon fiber is used as the softwood chemical pulp and the polymer absorbent fiber (SAF). By using an airlaid web forming apparatus, 35/35 / coniferous chemical pulp, polymer-absorbing fiber (SAF), and core-sheath type heat-fusible composite fiber (PET / PE composite core-sheath fiber) A cyclodextrin-containing sheet was obtained in the same manner as in Example 1 except that an airlaid web was formed while uniformly mixing in air at a ratio (mass ratio) of 30. The basis weight of the obtained cyclodextrin-containing sheet was 288 g / m ² .

[Example 13]
A material R in which a rose fragrance was included in cyclodextrin and polyethylene (PE) powder were mixed at a ratio (mass ratio) of 20/80 to obtain a particle mixture of the material R / PE powder. Rayon spunlace (basis weight 28 g / m ² ) was used as the first and second carrier sheets. The material R / PE powder particle mixture is spread on the first carrier sheet so as to be 10 g / m ^2, and the softwood chemical pulp and the core-sheath type heat-fusible composite fiber (PET / PE composite) The core-sheath fibers) were dropped and deposited while being uniformly mixed in air at a ratio (mass ratio) of 70/30 to form an airlaid web. At that time, the fiber mixture was supplied so that the basis weight of the shortcut fiber per air-laid web portion was 60 g / m ² . PE powder was spread on the air laid web so as to be 5 g / m ^2, and a second carrier sheet was laminated thereon. Other than that was carried out similarly to Example 2, and obtained the cyclodextrin containing sheet | seat. The basis weight of the obtained cyclodextrin-containing sheet was 131 g / m ² .

[Example 14]
A cyclodextrin-containing sheet was obtained in the same manner as in Example 13 except that the particle mixture of the material R / PE powder was sprayed so as to be 20 g / m ² . The basis weight of the obtained cyclodextrin-containing sheet was 141 g / m ² .

[Example 15]
A cyclodextrin sheet was obtained in the same manner as in Example 14 except that kino cloth (basis weight 40 g / m ² ) was used as the first and second caul sheets. The basis weight of the obtained cyclodextrin-containing sheet was 165 g / m ² .

[Example 16]
Rayon spunlace (basis weight 28 g / m ² ) is used as the first and second carrier sheets, and the particle mixture of the material R / PE powder is 20 g / m ² between the first and second carrier sheets. The laminated sheet thus obtained was passed through a hot air circulating conveyor oven type box type dryer and treated with hot air at 140 ° C. to obtain a cyclodextrin-containing sheet having a basis weight of 76 / m ² .

[Example 17]
As the first and second carrier sheets, heat-sealable PET / PE spunlace (basis weight 20 g / m ² ) is used, and the material R is 10 g / m ² between the first and second carrier sheets. The resulting laminated sheet was passed through a hot air circulating conveyor oven type box type dryer and treated with hot air at 140 ° C. to obtain a cyclodextrin-containing sheet having a basis weight of 50 g / m ² .

[Example 18]
PE powder is spread on the air laid web so as to be 5 g / m ² , a tissue (basis weight 14 g / m ² ) is fed out as a second carrier sheet, and a PE film (basis weight 26 g / m ² ) is provided thereon. A cyclodextrin-containing sheet was obtained in the same manner as in Example 11 except that the hot melt resin was applied and pasted so as to be 10 g / m ² . The basis weight of the obtained cyclodextrin-containing sheet was 329 g / m ² .

[Example 19]
A cyclodextrin-containing sheet was obtained in the same manner as in Example 10 except that the particle mixture of the material N / PE powder was sprayed to 55 g / m ² . The basis weight of the obtained cyclodextrin-containing sheet was 313 g / m ² .

[Example 20]
The particle mixture of the material M / PE Powder spraying so that 14 g / m ^2, the basis weight of the shortcut fibers per airlaid web portions such that the 56 g / m ^2, was fed fiber mixture. Moreover, the cyclodextrin containing sheet | seat was obtained like Example 2 except having used the rayon spunlace (basis weight 28g / m < ² >) as a 1st and 2nd carrier sheet. The basis weight of the obtained cyclodextrin-containing sheet was 126 g / m ² .

[Comparative Example 1]
A sheet was obtained in the same manner as in Example 2 except that the particle mixture of the material M / PE powder was not sprayed. The obtained sheet was made into a small piece having a width of 100 mm and a length of 100 mm, and placed in a metal bat. The material M2.4g was melt | dissolved in 100 ml of water, and the aqueous solution S of the material M was obtained. 10 ml out of 100 ml of the aqueous solution S was put in a metal vat to immerse a small piece, put in a dryer at 80 ° C. for 2 hours and dried to obtain a cyclodextrin-containing sheet. The basis weight of the obtained cyclodextrin-containing sheet was 281 g / m ² .

[Comparative Example 2]
A sheet was obtained in the same manner as in Example 2 except that the particle mixture of the material M / PE powder was not sprayed. The basis weight of the obtained sheet (containing no cyclodextrin) was 258 g / m ² .

(Sensory evaluation of cyclodextrin-containing sheet 1)
The cyclodextrin-containing sheets obtained in Examples 1 to 20 and Comparative Example 1 were cut to produce three test pieces having a width of 50 mm and a length of 50 mm. Each test piece was placed in a 50 ml vial, and a vial to which 1 ml of water was added and a vial to which water was not added were prepared by water injection or non-water injection into the vial. The vial lid was opened and the odor intensity was judged according to the judgment criteria shown in Table 1, and the evaluation was shown numerically. The larger the numerical value, the higher the odor intensity and the more functional components released from the cyclodextrin-containing sheet.

(Sensory evaluation of cyclodextrin-containing sheet 2)
The cyclodextrin-containing sheet obtained in Example 2 and Comparative Example 1 was cut to prepare one test piece having a width of 50 mm and a length of 50 mm. Each test piece was placed in a 100 ml beaker, 1 ml of water was added to the beaker, and then dried for 2 hours with a dryer at 80 ° C. Each of the taken out sheets was put into a vial, 1 ml of water was added, the lid was opened, the odor intensity was judged according to the judgment criteria shown in Table 1, and the evaluation was numerically shown. The larger the numerical value, the higher the odor intensity and the more functional components released from the cyclodextrin-containing sheet.

(Sensory evaluation of cyclodextrin-containing sheet 3)
The cyclodextrin-containing sheets obtained in Examples 11 and 12 and the sheet (without cyclodextrin) obtained in Comparative Example 2 were cut to produce one test piece having a width of 50 mm and a length of 50 mm. Each test piece was placed in a 100 ml beaker, 1 ml of room temperature water was added to the beaker, and then applied to the skin for 5 minutes. The cooling sensation was determined according to the criteria shown in Table 2, and the evaluation was numerical. The larger the value, the stronger the feeling of cooling.

(Food mold resistance test)
The cyclodextrin-containing sheet obtained in Example 19 and the sheet of Comparative Example 2 were placed in a plastic bag with a zipper together with food, allowed to stand at room temperature, visually checked for mold growth every week, and the mold was confirmed Was recorded (performed for 4 weeks). When mold was not confirmed in the 4th week (28th day), the day when mold was confirmed was recorded as “28 days or more”. As food, commercially available rice cakes (Irisu-don, manufactured by Maruzen Co., Ltd.) and bread (super-ripened, manufactured by PASCO) were used.

(Deodorization test)
Deodorant evaluation about the cyclodextrin-containing sheet obtained in Example 20 was evaluated by the method defined by the SEK mark fiber product certification standard of the general incorporated association, Fiber Evaluation Technology Council. As an evaluation gas, ammonia gas was used, and the decrease rate of ammonia gas after 1 hour was measured. It shows that deodorizing property is so high that a decreasing rate is large.

(Evaluation results)
Tables 3 to 7 show the results of the evaluation test. The average value of evaluation by 7 test participants was shown.

The cyclodextrin-containing sheet of the present invention showed high odor intensity in the presence of water. In addition, the cyclodextrin-containing sheet of the present invention showed higher odor intensity than the comparative example when it was given moisture again and dried and then given moisture again. That is, the cyclodextrin-containing sheet of the present invention has fewer functional components lost due to volatilization or the like between production and testing compared to the comparative example, and is excellent in the sustained release effect of the functional components. It is thought that there is.

In addition, the cyclodextrin-containing sheet of the present invention containing cyclodextrin in which the l-menthol component was included exhibited an exceptional cooling effect as compared with Comparative Example 2 not containing cyclodextrin.

Furthermore, it was confirmed that the cyclodextrin containing the wasabi component having antifungal performance released the wasabi component by moisture in the air or food, and showed the antifungal property of the food.

Moreover, since the cyclodextrin from which the functional component was released can include other components, a sheet having a deodorizing performance could be provided.

Above, the cyclodextrin-containing sheet of the present invention has been described by way of example and not for the purpose of limitation. Since cyclodextrin releases the functional component that is included by imparting moisture, the sheet obtained in the present invention can effectively release the functional component by imparting moisture. The temperature of water to be applied is not limited, but the release of the functional component may be made efficient by increasing the water temperature. Since cyclodextrin does not release the functional component contained in the moisture-free state, it can be produced and stored without releasing the functional component. For example, when manufacturing using a functional component having a strong odor, it is possible to prevent the odor from remaining in the manufacturing process. In addition, cyclodextrin can stabilize UV- and heat-sensitive substances and highly volatile substances in a liquid state, so it can prevent functional components from deteriorating and release functional components efficiently. A sheet that can be stored can be produced. Moreover, since the cyclodextrin which released | released the functional component can include other components, the sheet | seat which has a deodorizing performance can be provided, for example.

The moisture applied to the sheet obtained in the present invention may be a trace amount so as to wet the sheet or an amount in which the entire sheet is immersed. The moisture to be provided may contain other components as long as water is contained. For example, it may be a liquid containing water contained in body fluids or animals or plants, any liquid artificially mixed, alcohol or the like.

DESCRIPTION OF SYMBOLS 1 Web forming apparatus 30 Web raw material supply means 41 1st carrier sheet 51 2nd carrier sheet W Airlaid web A, B Heat-fusion resin C Cyclodextrin F fiber M The material which included the ginger component in cyclodextrin N Material in which wasabi component is included in cyclodextrin Q Material in which l-menthol component is included in cyclodextrin R Material in which rose fragrance is included in cyclodextrin S Aqueous solution of material M Y, Z Additive 100 Cyclodextrin Contained layer 110 Cyclodextrin-containing layer containing fibers 120 Cyclodextrin-containing layer containing heat-fusible resin A 200 Layer containing heat-fusible resin B 300 Other layers 500 Adhesive layer 1010 Cyclo containing heat-fusible resin A Dextrin-containing layer 1020 containing heat-fusible resin A and fibers Clodextrin-containing layer 1030 Cyclodextrin-containing layer containing heat-fusible resin A, fiber and additive Y 1040 Cyclodextrin-containing layer containing heat-fusible resin A, fiber and additive Z 3010 3030 Nonwovens containing pulp and synthetic fibers (which may include SAF) 3030 Tissue 3040 Optional nonwovens 3050 Film 3060 Optional layers (films, nonwovens, etc.)

Claims

A cyclodextrin-containing sheet comprising a cyclodextrin-containing layer in which a functional component is included, and the cyclodextrin-containing layer is provided by a dry method.
The cyclodextrin-containing layer comprises fibers;
The cyclodextrin powder is held in voids formed by the fibers,
The cyclodextrin-containing sheet according to claim 1.
The cyclodextrin-containing layer contains a heat-fusible resin A,
The cyclodextrin-containing layer is obtained by melting the heat-fusible resin A in a mixture containing the cyclodextrin powder and the heat-fusible resin A. The cyclodextrin-containing sheet as described in 1.
The layer adjacent to the cyclodextrin-containing layer contains a heat-fusible resin B,
The layer adjacent to the cyclodextrin-containing layer is obtained by disposing the heat-fusible resin B on the surface of the cyclodextrin-containing layer and melting the heat-fusible resin B with heat. The cyclodextrin-containing sheet according to any one of claims 1 to 3.
The cyclodextrin-containing sheet according to any one of claims 1 to 4, which has been heat-sealed.
The cyclodextrin-containing sheet according to any one of claims 1 to 5, wherein an adhesive layer is provided adjacent to the cyclodextrin-containing layer.
The cyclodextrin-containing sheet according to any one of claims 1 to 6, which is embossed.