JP6516001B2 - Cyclodextrin-containing sheet - Google Patents

Description

  The present invention relates to a sheet containing cyclodextrin. The cyclodextrin-containing sheet of the present invention is used for food tray mats, food packaging sheets, beauty sheets, cold feeling sheets, sheets for living materials such as insect-repellent sheets, and masks for medical care such as masks, hand towels, and antibacterial and antiviral sheets. It can be used in applications such as hygiene sheets and cleaning sheets.

  Cyclodextrin is a cyclic oligosaccharide having an internal cavity and is hydrophobic on the inside and hydrophilic on the outside, so it has the ability to incorporate various molecules into the internal cavity in the presence of water to form an inclusion complex. Have. In addition, cyclodextrin has a sustained release ability to gradually release the molecule incorporated inside. Due to the inclusion complex formation ability and the sustained release ability, cyclodextrin is used in various fields such as food field, cosmetics and toiletries field, medical materials field, cleaning products field, clothing field and sundries.

  For example, Patent Document 1 discloses a water-soluble cyclodextrin film including an antibacterial agent or an insect repellent agent which can be used for food wrapping or the inner surface of a storage container. In Patent Document 1, a cyclodextrin solution added with an antibacterial agent or an insect repellent agent is applied to a substrate surface such as glass, plastic, paper, and non-woven fabric by means such as spraying or brushing, and dried. Water soluble cyclodextrin films are obtained.

Unexamined-Japanese-Patent No. 2002-29990

  However, in Patent Document 1, a film is formed using an aqueous solution of a water-soluble cyclodextrin having a film forming ability and an antibacterial agent or an insect repellent agent added thereto. In the case of this formation method, the antibacterial agent or insect repellent agent can enter and leave the internal cavity of cyclodextrin in an aqueous solution, so when the film is formed, the total amount of the antibacterial agent or insect repellent agent added to the aqueous solution is It can not be said that the film is included in the state of being included in cyclodextrin. In the formed film, the antimicrobial agent or insect repellent agent not included in cyclodextrin is considered to be released from the film earlier than that 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-mentioned subject has the following modes.

  [1] A cyclodextrin-containing sheet provided with a cyclodextrin-containing layer including a functional component, wherein the cyclodextrin-containing layer is provided by a dry method.

[2] The cyclodextrin-containing layer contains a fiber,
The cyclodextrin-containing sheet according to [1], wherein the powder of cyclodextrin is held in the void formed by the fiber.

[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 powder of the cyclodextrin and the heat-fusible resin A, [1] or [1] The cyclodextrin containing sheet as described in 2].

[4] 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 by heat. The cyclodextrin containing sheet in any one of [1]-[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 powder of cyclodextrin is fixed in a state of being 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 powder of cyclodextrin is fixed in a state of being partially covered with the heat-fusible resin B. The cyclodextrin containing sheet as described.

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

  [11] The cyclodextrin-containing layer according to any one of [1] to [9], wherein the powder of cyclodextrin is unevenly distributed in at least one of the in-plane direction and the 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, by providing the cyclodextrin-containing layer by a dry method, cyclodextrin in a state in which the functional component is included can be included in the sheet without water. Therefore, the functional component can be included in the sheet while being included in cyclodextrin, and in the produced sheet, the functional component is gradually released by contacting with water by the controlled release performance of cyclodextrin. It 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 good functional component release performance even when a certain time has passed after the production of the sheet. Moreover, since cyclodextrin which has released the functional component can include other components, it can exhibit, for example, a deodorizing function.

  Further, in the present invention, by providing the cyclodextrin-containing layer by a dry method, the cyclodextrin can be maintained in the form as it is added to the sheet in the sheet. Since cyclodextrin can be contained in the sheet without being dissolved, it is possible to increase the blending amount of cyclodextrin in the sheet. In addition, since the component included in cyclodextrin can be blended without contacting with water, transfer of the inclusion component from cyclodextrin into water and volatilization can be prevented. 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 configuration 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, “a cyclodextrin in which a functional component is included” is not necessarily limited to one in which the total amount of cyclodextrin having inclusion performance includes a maximum amount of functional components. That is, “a cyclodextrin in which the functional component is included” in the present specification is a so-called empty state in which the functional component is not included in addition to the cyclodextrin in the state in which the functional component is included. It should be possible to include cyclodextrin.

  The configuration of the cyclodextrin-containing sheet within the scope of the present invention will be described with reference to FIG. FIG. 1 is a view showing the constitution of the cyclodextrin-containing sheet of the present invention for the purpose of illustration, not for limitation. In the drawings, the same reference numerals indicate the same components. Duplicate descriptions may be omitted for identical components.

  Fig.1 (a)-(c) shows the cyclodextrin containing sheet | seat provided with the cyclodextrin containing layer 100 in which the functional component was included based on this invention. FIG. 1 (a) is a cyclodextrin-containing sheet consisting of only the cyclodextrin-containing layer 100. FIGS. 1B and 1C are cyclodextrin-containing sheets in which another layer 300 is laminated on one side or both sides of the cyclodextrin-containing layer 100.

  Thus, the cyclodextrin-containing sheet of the present invention may have a single layer structure, and may have a multilayer structure of two layers, three layers, or four or more layers not shown. The cyclodextrin-containing sheet may contain two or more cyclodextrin-containing layers 100. The other layer 300 has 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 the purpose of imparting strength (rigidity) to the cyclodextrin-containing sheet. It can be arranged. For the other layer 300, for example, a sheet of cloth, non-woven fabric, paper, film or the like can be used. The other layer 300 may contain a heat fusible resin. If the cyclodextrin-containing sheet comprises multiple layers 300, these layers 300 may be the same or different materials.

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

  In addition to cyclodextrin C in which the functional component is included, the cyclodextrin-containing layer 100 may contain a fiber, a heat fusible resin, an additive, and the like.

  As an example of a configuration for preventing powdering of cyclodextrin C in which a functional component is included from a cyclodextrin-containing sheet, specific embodiments as shown in the following first to sixth embodiments will be described.

(First aspect)
FIG. 1 (d) is an example in which the cyclodextrin-containing layer 100 in which the functional component is included contains the fiber F. In the cyclodextrin-containing layer 110 containing the fiber F, the powder of cyclodextrin 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 Powder is prevented by the

  The cyclodextrin-containing layer 110 containing fibers can contain only cyclodextrin C and fibers F in which the functional component is included. Moreover, in addition to the cyclodextrin C and the fiber F in which the functional component was included, the heat fusible resin, the additive, etc. may be contained in the cyclodextrin containing layer 110 containing a fiber. Also, the fiber F itself may be a heat fusible resin.

  In this embodiment, in the cyclodextrin-containing sheet, another layer 300 is laminated on one side or both sides of the cyclodextrin-containing layer 110 including the fiber F, for the purpose of functionalization such as surface modification and strength (rigidity) application. It may have a multilayer structure (not shown).

  That is, the cyclodextrin-containing sheet of the first aspect of the present invention is a monolayer structure or a multilayer structure comprising a cyclodextrin-containing layer containing a cyclodextrin in which a functional component is included and a fiber. The powder of cyclodextrin in which the functional component is included can be held in the cyclodextrin-containing layer in the void formed by the fibers constituting the cyclodextrin-containing layer. Such a form can be realized by a dry method such as air laid method. The powder of cyclodextrin in which the functional component is included can be distributed throughout or in part of the cyclodextrin-containing layer. That is, the powder of cyclodextrin 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 powder of cyclodextrin in which the functional component is included can be localized 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 appropriately sets the preparation method of raw materials (mixture or non-mixture of raw materials), dispersion order, dispersion position, etc. when forming a layer by a dry method such as air laid method Can be controlled.

(Second aspect)
FIG. 1 (e) is an example in which the cyclodextrin-containing layer 100 in which the functional component is included includes the heat-fusion resin A. The cyclodextrin-containing layer 120 containing the heat fusible resin A melts the heat fusible resin A in a mixture containing the powder of cyclodextrin in which the functional component is included and the heat fusible resin A Obtained by

  In the cyclodextrin-containing layer 120 containing the heat fusible resin A, the cyclodextrin C in which the functional component is included is in a state in which a part is covered when the heat fusible resin A which is melted solidifies. By being fixed, powdering is prevented. In addition, the heat fusible resin A is blended in such an amount that the functional component does not cover the whole of the cyclodextrin C in which the functional component is included, and the cyclodextrin C in which the functional component is included is a heat fusible The adhesive resin A has a portion not covered, and the ability to release the functional component 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, in addition to the cyclodextrin C and the heat fusible resin A in which the functional component is included, fibers, additives, etc. May be In addition, the heat fusible resin A itself may be fibrous.

  In this embodiment, the cyclodextrin-containing sheet is, for example, another layer on one side or both sides of the cyclodextrin-containing layer 120 containing the heat-fusible resin A for the purpose of functionalization such as surface modification or strength (rigidity). 300 may have a multilayer structure (not shown) laminated.

  That is, the cyclodextrin-containing sheet according to the second aspect of the present invention has a single-layer structure or a multi-layer structure comprising a cyclodextrin-containing layer containing a cyclodextrin in which a functional component is included and a heat fusible resin. It is a body. In the cyclodextrin-containing layer, the cyclodextrin in which the functional component is included is fixed in a state where a part of the cyclodextrin is coated on the heat fusible resin. In the cyclodextrin-containing layer, the cyclodextrin in which the functional component is included 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 includes the heat-fusion resin B. The layer 200 containing the heat fusible resin B, adjacent to the cyclodextrin-containing layer, arranges the heat fusible resin B on the surface of the cyclodextrin containing layer 100 and melts the heat fusible resin B by heat. Obtained by

  When the heat-fusible resin B melted in the layer 200 containing the heat-fusible resin B adjacent to the cyclodextrin containing the functional component contained in the cyclodextrin-containing layer 100 solidifies. The powder is prevented from being dropped by partially covering and fixing. In addition, cyclodextrin C in which the functional component is included has a portion which is not covered with the heat-fusible resin B, and the ability to release 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, additives, and the like. When these other components are contained, the layer 200 containing the heat fusible resin B is obtained by disposing a mixture of the heat fusible resin B and these other components on the surface of the cyclodextrin-containing layer 100 and applying heat. It can be obtained by melting the heat fusible resin B.

  The cyclodextrin-containing sheet of the example shown in FIG. 1 (f) is specifically a layer 200 containing a heat-fusion resin B and a cyclodextrin-containing layer 100 comprising a powder of cyclodextrin 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 the prevention of powdering out of the cyclodextrin contained in the cyclodextrin-containing layer 100 positioned as the intermediate layer. In addition, although the cyclodextrin-containing layer 100 and the cyclodextrin-containing layer 120 containing the heat fusible resin A are illustrated and described as separate layers here, these two layers are integrally configured to be one layer. The configuration of the cyclodextrin-containing layer 120 containing the heat fusible resin A is also included in this embodiment. According to this aspect, particularly in the cyclodextrin-containing layer 120 containing the heat fusible resin A, powder removal can be effectively prevented when the cyclodextrin powder is unevenly distributed on the surface side.

  In the present 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 an outer surface of a laminate of a cyclodextrin-containing layer and a layer 200 containing a heat-fusion resin B, for the purpose of functionalization such as surface modification and strength (rigidity). It may have a multilayer structure (not shown) in which another layer 300 is laminated on one side or both sides thereof.

  That is, the cyclodextrin-containing sheet of the third aspect of the present invention comprises a layer containing a heat-fusion resin and a cyclodextrin-containing layer adjacent to it, containing a cyclodextrin in which a functional component is included. It is a multilayer structure. In the cyclodextrin-containing layer, the cyclodextrin in which the functional component is included is fixed in a state in which the fusible resin derived from the layer containing the fusible resin adjacent thereto is partially covered 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 distribution of 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 described above may be formed by seal processing such as heat seal processing or ultrasonic seal processing. As an example, FIG. 1 (g) shows a structure in which another layer 300 containing a heat-fusible resin is laminated on both sides of the cyclodextrin-containing layer 100 in which the functional component is included, and the four sides are heat-sealed. Indicates

  That is, the cyclodextrin-containing sheet according to the fourth aspect of the present invention is located in the partially fused two outer layers (the other layer 300) and the non-fused portion between the two outer layers. And the cyclodextrin-containing layer 100 in which the functional component is included. Such a form can be easily realized by seal processing.

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

  By continuously fusing the four sides, the bag-like portion can be sealed. For example, in the case where the cyclodextrin-containing layer 100 in which the functional component is included consists only of the powder of cyclodextrin in which the functional component is included, the powder is a powder of the inside of the sealed bag-like portion. It can exist as a form. At this time, the powder can be flowable without being fixed in position inside the sealed bag-like portion.

  The position of seal processing can be set as appropriate. For example, the sealing process may be applied, for example, linearly to the central portion of the sheet in addition to the four sides of the sheet, to divide the bag-like portion into a plurality of continuous or discontinuous sections. The cyclodextrin-containing layer 100 including the functional component can be dispersedly disposed in the plurality of compartments.

(Fifth 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 adhesion layer 500 adjacent to the cyclodextrin-containing layer is obtained by disposing the adhesion 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 as to prevent powdering of cyclodextrin contained in the cyclodextrin-containing layer 100, and examples thereof include a hot melt adhesive.

  In detail, the cyclodextrin-containing sheet shown in FIG. 1 (h) is a hot melt adhesive such as a thermoplastic resin, for example, between the cyclodextrin-containing layer 100 in which the functional component is included and the other layer 300. An adhesive layer 500 made of an agent is interposed, and a configuration in which interlayer bonding is performed by hot melt processing is shown.

  More specifically, the cyclodextrin-containing sheet of the example shown in FIG. 1 (h) is a cyclodextrin-containing layer containing a heat-fusible resin A on the surface of the cyclodextrin-containing layer 100 opposite to the adhesive layer 500. It has 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. The cyclodextrin-containing layer 100 can contribute to the prevention of powder loss of cyclodextrin. In addition, although the cyclodextrin-containing layer 100 and the cyclodextrin-containing layer 120 containing the heat fusible resin A are illustrated and described as separate layers here, these two layers are integrally configured to be one layer. The configuration of the cyclodextrin-containing layer 120 containing the heat fusible resin A is also included in this embodiment. According to this aspect, particularly in the cyclodextrin-containing layer 120 containing the heat fusible resin A, powder removal can be effectively prevented when the cyclodextrin powder is unevenly distributed on the surface side.

  That is, the cyclodextrin-containing sheet according to the fifth aspect of the present invention comprises an adhesive layer having an adhesive function such as an adhesive, and a cyclodextrin-containing layer adjacent thereto, which contains a cyclodextrin in which a functional component is included. , And a multilayer structure. 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 distribution of cyclodextrin in which the functional component is included is unevenly distributed in the thickness direction.

(Sixth aspect)
The cyclodextrin-containing sheet according to the present invention described above may be formed by embossing. As one example, FIG. 1 (i) shows a configuration in which the layer 300 is laminated on both sides of the cyclodextrin-containing layer 120 containing the heat fusible resin A, and the layers are adhered by embossing.

  That is, the cyclodextrin-containing sheet according to the sixth aspect of the present invention comprises 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 having a functional component included therein. An uneven pattern may be formed on at least one surface. Such a form can be easily realized by embossing.

  The configuration of the cyclodextrin-containing sheet of the present invention has been described above using FIGS. 1 (a) to 1 (i). However, these are exemplifications, and other configurations, for example, combinations of the illustrated 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 figure is the cyclodextrin-containing layer 110 containing the fiber F or the cyclodextrin-containing layer 120 containing the heat fusible resin A. Or a layer containing 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.

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

(Cyclodextrin-containing layer in which a functional component is included)
The cyclodextrin-containing layer in which the functional component of the present invention is included is a layer containing cyclodextrin in the state in which the functional component is included. In the cyclodextrin-containing layer in which the functional component of the present invention is included, in addition to cyclodextrin in a state in which the functional component is included, so-called empty cyclodextrin in a state in which the functional component is not included. May be included. Cyclodextrin is included as a powder (particles). The cyclodextrin-containing layer in which the functional component is included can contain only 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. In addition to the cyclodextrin in which the functional component is included, the cyclodextrin-containing layer in which the functional component is included may contain a fiber, a heat fusible resin, an additive, and the like. . Furthermore, in the present invention, in the cyclodextrin-containing layer in which the functional component is included, in addition to the cyclodextrin in which the functional component is included (ie, in addition to cyclodextrin in the state in which the functional component is included), In addition to the so-called cyclodextrin which may contain empty cyclodextrin in a state where the functional component is not included, cyclodextrin which does not include the functional component (that is, a site having an inclusion ability) So-called empty cyclodextrin) may be further blended.

(Cyclodextrin)
The cyclodextrin used in the present invention, also called cyclodextrin or cyclic oligosaccharide, has the ability to incorporate various molecules as a guest into a cavity (inclusion) to form an inclusion complex, and to release the incorporated guest molecule as a sustained release. Have. The number of glucose groups contained in one cyclodextrin molecule is six α-cyclodextrins, seven β-cyclodextrins, and eight γ-cyclodextrins, and the molecular weight of the functional component to be included, and 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 or acetylation. Moreover, cyclodextrin may have a branch. These cyclodextrins can be used alone or in combination. In the present invention, cyclodextrin as described above is used in which a functional component is included. The cyclodextrin used may contain an empty cyclodextrin which does not include the functional component.

(Functional ingredient)
As a functional ingredient, various functional ingredients can be used according to a use, a purpose, etc. of a cyclodextrin containing sheet. Examples 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, horseradish ingredients, mustard ingredients, pepper ingredients, ginger ingredients, lemon ingredients, orange ingredients, grapefruit ingredients, yuzu ingredients, plum ingredients, green tea ingredients, almond ingredients, natural meat flavors, extract ingredients such as rose, herbs, plant extract And natural products such as tea extract or flavors; natural or organic volatile antibacterials or flavors such as l-menthol component; and cosmetic raw materials such as coenzyme Q10, isoflavones, vitamins and the like.

  As functional components other than those described above, for example: medicinal components, moisturizers, feel improvers, antioxidants, reducing agents, oxidizing agents, preservatives, antibacterial agents, pH adjusters, ultraviolet absorbers, whitening Agents, vitamins and their derivatives, anti-inflammatory agents, anti-inflammatory agents, hair growth agents, blood circulation enhancers, stimulants, hormones, anti-wrinkle agents, anti-aging agents, soothing agents, cooling agents, warming agents, wounds Healing accelerator, irritation reducing agent, analgesic, cell activator, plant / animal / microbe extract, antipruritic agent, exfoliant / dissolving agent, antiperspirant, refreshing agent, astringent, fragrance, pigment, coloring agent, anti-inflammatory and analgesic Agent, antifungal agent, antihistamine agent, hypnotic sedative agent, mental stabilizer, antihypertensive agent, antihypertensive agent, antihypertensive diuretic, antibiotic, anesthetic, antibacterial substance, antiepileptic agent, coronary vasodilator, herbal medicine, adjuvant, wetting agent Antipruritic agent, Keratinolytic agent, Antiseptic and disinfectant, Fat-soluble substance, Deodorant ingredient, Known compounds such as 避剤, 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 components)
In the present invention, cyclodextrin in which the functional component is included is used in the form of powder (particles). Cyclodextrin in the form of powder (particles) in which the functional component is included can be obtained by any method known in the art, or can be purchased from manufacturers. For example, DEXY ACE (product using cyclodextrin) manufactured by Saline Port Sugar Co., Ltd., CAVAMAX (registered trademark) manufactured by Cyclochem Co., Ltd., and the like can be suitably used. These cyclodextrins in the form of powder (particles) in which the functional component is included are in a state in which the functional component is not included in addition to the cyclodextrin in the state in which the functional component is included. 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.), 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 absorption fiber (SAF) can be used. Since these fibers have water absorbency, they can be formulated as a water absorbent material to promote the release of functional components when using a cyclodextrin-containing sheet. In the case of using a cyclodextrin in which a cooling sensation material is included as a functional component and using a highly water-absorbent fiber such as SAF as the fiber, it is possible to provide a sheet having a strong cooling sensation and a long duration. In addition, non-water absorbent fibers can also be used as the fibers 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 disintegrated short cut fibers. Two or more of these fibers may be used in combination.

(Heat fusible resin)
The heat fusible resin in the present invention is a binder resin for binding constituent components. In addition, the heat fusible resin has an effect of imparting strength in the cyclodextrin-containing sheet, and the cyclodextrin-containing sheet is easily maintained in shape by containing the heat fusible resin.

  The heat fusible resins A and B bind cyclodextrins in which the functional component is included, and cyclodextrin and other components in which the functional component is included when other components are included. Can. The heat fusible resin A and B is a cyclodextrin in which the functional component is included when it is melted and solidified so that the functional component does not prevent the release of the functional component from the included cyclodextrin. It is blended in such an amount as not to cover the whole of the powder (particles) of

  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, for example, in the form of a short-cut fiber.

  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 resins. For example, it has a core-sheath fiber consisting of a core part and a sheath part, a side-by-side fiber consisting of different resins in one half and the other half in the cross section perpendicular to the longitudinal direction, cores and shells consisting of different resins Core-shell particles and the like can be mentioned.

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

(Other layers)
The cyclodextrin-containing sheet of the present invention is added to the cyclodextrin-containing layers 100, 110, and 120 in which the functional component is included, for example, for the purpose of imparting functionality such as surface modification or imparting of strength (stiffness) Layer 300 can be included. In addition, a resin powder may be dispersed between the other layers for the purpose of improving adhesion, and heating, or an optional adhesive layer such as a hot melt resin layer or an adhesive layer may be provided.

  The other layer 300 may be, for example, any sheet having a property of passing moisture (water permeability) and / or a property of absorbing moisture (water absorption) such as non-woven fabric, cloth, paper and the like. Also, any film can be used. The other layer 300 may include a heat fusible resin. Using a film with relatively low air permeability on one side of the cyclodextrin-containing sheet can prevent the released functional component from dissipating from that side. Surface processing such as asperity may be applied to the surface of the other layer 300 to be the outer layer of the cyclodextrin-containing sheet.

(Additive)
The cyclodextrin-containing sheet of the present invention can be blended with an additive having one or more effects depending on its use. The additive may be an agent (for example, a so-called effect promoter) that includes an ingredient that compensates for the effect of the functional component of the present invention (for example, a so-called effect promoter), and can be mutually It may be an agent containing a component that does not show an action

  Additives include, for example: oily bases, moisturizers, texture improvers, surfactants, polymers, thickeners / gelling agents, solvents, propellants, antioxidants, reducing agents, oxidizing agents, preservatives, Antibacterial agents, chelating agents, pH adjusters, acids, carbonates, alkalis, powders, inorganic salts, UV absorbers, skin lightening 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, tempering agent, cooling agent, warming agent, wound healing promoting agent, irritation reducing agent, analgesic agent, cell activator, plant / animal / microbe extract, Antipruritic agent, keratin exfoliating / dissolving agent, antiperspirant, refreshing agent, astringent, enzyme, nucleic acid, fragrance, pigment, coloring agent, dye, pigment, metal-containing compound, unsaturated monomer, polyhydric alcohol, polymer Additives, anti-inflammatory analgesics, antifungals, antihistamines, hypnotic sedatives, mental stabilizers, anti-high Antihypertensive, antihypertensive diuretics, antibiotics, anesthetics, antibacterial substances, antiepileptics, coronary vasodilators, herbal medicines, adjuvants, moisturizers, astringents, thickeners, tackifiers, antipruritic agents, keratin Softening release agents, oil-based materials, ultraviolet blocking agents, preservatives and germicides, antioxidants, liquid matrices, fat-soluble substances, polymeric carboxylates, additives, metallic soaps, water-absorbent materials, etc. may be mentioned. For example, use of particles such as carboxymethyl cellulose (CMC), aqueous resin particles such as polyvinyl alcohol and polymer absorbent (SAP) has effects such as extension of duration and improvement of release efficiency of functional components. Further, the additive in the form of liquid may be blended in the form of solid as particles contained in a capsule or the like.

  The additive can be blended in the cyclodextrin-containing layer 100, 110, 120 in which the functional component is included. In addition, when the cyclodextrin-containing sheet has a multilayer structure including a cyclodextrin-containing layer and another layer, it can be blended in any one or more of the plurality of layers.

  For example, when the cyclodextrin-containing sheet has a multilayer structure, an acid may be mixed in one layer, and a carbonate may be mixed in another layer to form a sheet from which carbon dioxide gas is generated at the time of use. By the generation of carbon dioxide gas, functional components included in cyclodextrin are efficiently released together with the carbon dioxide gas.

(Heat seal)
Heat sealing is a method of applying heat by means of heating means such as a heat sealer to cause interlayer adhesion. In the present invention, for example, a cyclodextrin-containing layer in which a functional component consisting only of cyclodextrin in which a functional component is included is included as an intermediate layer, and a layer including a heat-fusion resin on both sides thereof. By heat-sealing the four sides to form a cyclodextrin-containing sheet having a multilayer structure.

(Ultrasonic seal)
Ultrasonic sealing is a method of bonding layers by ultrasonic vibration and pressure. Similar to the heat seal, an ultrasonic sealable layer 200 may be disposed on both sides of the cyclodextrin-containing layer, and the four sides may be ultrasonically sealed to form a cyclodextrin-containing sheet having a multilayer structure.

(Adhesive layer)
The method for forming the adhesive layer is not particularly limited, but it 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 a sheet to a sheet. It can be used for interlayer adhesion when bonding a cyclodextrin-containing layer to another layer.

  For example, ethylene / vinyl acetate copolymer (EVA) is known as a thermoplastic resin that can be used for hot melt processing. In addition to these, resins generally known as hot melt adhesives such as synthetic rubbers, polyesters, polyamides, polyurethanes, acrylics and olefins can be used.

(Embossed)
Embossing is a process in which pressure is applied by a die with a concavo-convex pattern and heat is applied. This method can also be used for interlayer adhesion of multilayer structures. In addition, this method can also be used to apply surface treatments such as asperities to a cyclodextrin-containing sheet having a single-layer or multi-layer structure.

(Content ratio of each component)
As for the compounding quantity of the cyclodextrin in a cyclodextrin containing sheet, as for the quantity of the powder which occupies for the sheet whole quantity, 0.01 mass% or more is preferable. If it is 0.01 mass% or more, the 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 preferable that it is 10-4000 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 including a functional component is produced by a web forming apparatus employing an air laid method, and another layer is separately laminated on the cyclodextrin-containing layer when another layer is included. A manufacturing method can be used. As such a method, for example, 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 way to make it join. Alternatively, when preparing 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 air laid method, the cyclodextrin-containing layer A layer according to the present invention is formed by using the other layer 300 of the present invention in the carrier sheet for transporting the web layer to be the layer 120, thereby forming a laminate of the other layer 300 and the cyclodextrin containing layer 120. You may obtain the cyclodextrin containing sheet which has a structure. Further, each layer of the cyclodextrin-containing sheet prepared separately may be bonded by embossing or heat sealing. There is also a method of providing an adhesive layer (adhesive layer) on at least one of the bonding surfaces of each layer of the cyclodextrin-containing sheet with a hot melt adhesive such as a thermoplastic resin, and bonding the layers by hot melt processing. In the present invention, these layers are laminated by a dry method in order to prevent the release (efflux) of functional components, the aggregation of cyclodextrin, and the like at the time of production.

(Method of producing cyclodextrin-containing sheet employing air-laid method)
The method for producing the cyclodextrin-containing sheet of the present embodiment employing the air laid method optionally includes a disintegrating step, a mixing step, a web forming step, and a binding step.

(Disintegration process)
The fibrillation step is a step of fibrillating the material in the form of shortcut fiber by an air flow to obtain a fibrillated shortcut fiber.

  In the defibration method by the air flow of the shortcut fiber, the air flow is formed by a blower or the like, the shortcut fiber is supplied to the air flow, and the air is defibrillated by the stirring effect of the air flow.

  As a fibrillation method, it is preferable to disintegrate by a swirling air flow. According to the fibrillation method using a swirling air flow, the shortcut fiber can be sufficiently fibrillated, and when forming the air laid web by the air laid method, the dispersibility of the fibrillated shortcut fiber can be further enhanced .

  As a disintegration method using a swirling air flow, for example, there is a method in which a short cut fiber is inserted into a blower and disintegrated by the blower. In addition, air may be sent along the circumferential direction into the cylindrical container by a blower to form a swirling flow, and a shortcut fiber may be supplied into the swirling flow and stirred to break up the fibers.

  The flow velocity of the air flow is appropriately selected according to the amount of the short-cut fiber, but is usually in the range of 10 to 150 m / sec.

(Mixing process)
The mixing step is a step of mixing the cyclodextrin powder (particles) in which the functional component is included and the material (if included) in the form of a defibrated shortcut fiber to obtain a web material. At this time, any other material can be mixed simultaneously. The shape of any other material may be fibrous or particulate. Examples of optional other materials include heat fusible resins, additives, etc., which are added as needed, and the like. There is no particular limitation on the order of addition of these materials, and these materials can also be added by, for example, spraying or the like after the mixing step.

  At the time of mixing, in order to improve the dispersibility of the defibrated shortcut fiber, it is preferable to stir the defibrated shortcut fiber and the other material. However, in order to prevent breakage of the defibrated shortcut fiber, it is preferable to apply stirring using an air flow instead of stirring using mechanical shear force.

  The mixing step may be performed after the fibrillation step or simultaneously with the fibrillation step. When the mixing step is performed simultaneously with the fibrillation step, the air flow in the fibrillation step is used to mix the fibrillation shortcut fiber with any material. Further, cyclodextrin powder (particles) and / or arbitrary particles may be introduced into the web forming line of the defibrated shortcut fiber and / or any particles in the particle dispersion step described later, and mixed.

(Web formation process)
The web forming step is a step of obtaining an air-laid web from a web material by an air-laid method. Here, the air laid method is a method of forming a web by randomly depositing fibers in a three-dimensional manner using an air flow.

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

  In the web forming step 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, an air permeable endless belt 20, web material supply means 30, first carrier sheet supply means 40, second carrier sheet supply means 50 and a suction box 60.

  Here, the conveyor 10 is configured by a plurality of rollers 11. The air permeable endless belt 20 is attached to the conveyor 10 and is configured to rotate. The web material supply means 30 supplies the web 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 air-permeable endless belt 20. The second carrier sheet supply means 50 supplies the second carrier sheet 51 toward the first carrier sheet 41 which has passed through the air permeable endless belt 20. The suction box 60 sucks the permeable endless belt 20 from the inside thereof.

  In the web forming apparatus 1, the web material supply means 30 is installed above the permeable endless belt 20, and 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 disposed downstream of the air permeable endless belt 20.

  In the web forming process using the web forming apparatus 1, the conveyor 10 is driven to rotate the air-permeable endless belt 20 by rotating the rollers 11 in the same direction. Further, the first carrier sheet 41 is fed out from the first carrier sheet supply means 40 so as to be in contact with the air permeable endless belt 20.

  Then, while suctioning the air-permeable endless belt 20 by the suction box 60, the web material is lowered from the web material supply means 30 together with the air flow, and the fiber mixture is dropped onto the first carrier sheet 41 on the air-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 onto the air-laid web W to obtain an air-laid web-containing laminated sheet.

(Binding process)
The bonding method is preferably a thermal bonding method from the viewpoint of bonding without using water. The binding step by the thermal bonding method is a step of heating the air-laid web to bind the disaggregated short cut fibers with the heat-fusible resin.

  Examples of the heat treatment of the air-laid web include hot air treatment and infrared irradiation treatment, and in terms of low cost of the apparatus, hot air treatment is preferred.

  As the hot air treatment, the air-laid web is brought into contact with a through-air dryer provided with a rotating drum having air permeability on its circumferential surface and heat-treated (hot air circulation rotary drum system) or the air-laid web is passed through a box type dryer The method (Hot-air circulation conveyor oven system) etc. which heat-process by letting hot air pass an air laid web are mentioned.

  When the air-laid web is sandwiched between the first carrier sheet and the second carrier sheet to form a laminated sheet as in the present embodiment, the laminated sheet may be subjected to hot air treatment as it is. The first carrier sheet and the second carrier sheet can be peeled off 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, in order to finely adjust the thickness and density of the cyclodextrin-containing sheet, it may be compressed through a heating roll.

(Action effect)
In the above production method, the powder (particles) of cyclodextrin in which the functional component is included is in the form of powder (particle) in the form of powder (particles) without water, and in the cyclodextrin-containing layer in which the functional component is included. Can be contained in Therefore, less functional components are 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.

  (1) For clothing, (2) for protection, (3) for medical use, (4) for construction materials, (5) for civil engineering, (6) for vehicles, (7) hygiene (8) For furniture and interiors, (9) For wipers, (10) For filters, (11) For bedding, (12) For agriculture and horticulture, (13) For leather, (14) For living materials, (15) ) Industrial materials, etc.

  (1) For clothing, for example, clothing members, disposable clothing (also referred to as disposable clothing), shoes, patches, gloves, slippers, hats, etc. may be mentioned. Specific examples of the clothing member include interlinings, adhesive interlinings, cotton linings, bra pads, shoulder pads, jumper liners and the like. Specific examples of the disposable clothing are event jumpers, travel underwear and the like. Specific examples of the shoes include insoles, fishing leather soles and the like.

  (2) For protective purposes, for example, protective clothing, protective articles, etc. may be mentioned. Specific examples of the protective clothes include work clothes, experimental clothes, protective clothes and the like. Specific examples of the protective articles are safety shoes, work gloves, smoke masks, dust masks, gas masks and the like.

  (3) For medical use, for example, gauze, surgical clothes, covering sets, baby bats, caps, masks, sheets, antibacterial mats, antibacterial agent, poultice base, moisturizer base, gibbs material, leukocyte separating material, Artificial skin etc. are mentioned.

  (4) For building materials, for example, roofing, tufts, carpet backing, anti-condensing sheet, temperature control sheet, humidity control sheet, wall covering, heat insulating material, hygroscopic material, sound absorbing material, sound absorbing material, anti-vibration material, Examples include wood materials and curing sheets.

  (5) For civil engineering use, for example, drain materials, filter materials, suction preventing materials, separating materials, water shielding sheets, reinforcing materials, protective materials, concrete reinforcing sheets, asphalt overlay materials, underground pipe repair materials, prevention A touch material etc. are mentioned.

  (6) For vehicles, for example, automobile interior materials, automobile parts and the like can be mentioned. Specific examples of the car interior material include floor mats, doart rims, trunk mats, ceiling materials, rear parcels, lining cloths, headrests, bonnet covers, sound absorbing materials, vibration absorbing materials and the like. Specific examples of the automotive parts include air cleaners, oil cleaners, indoor cleaning filters, and outdoor air intake filters.

  (7) For hygiene purposes, for example, diapers, sanitary products, emergency supplies, cleaning products, hand towels, masks, etc. may be mentioned. As a specific example of the said diaper, it is a paper diaper, a diaper cover, etc. Specific examples of the sanitary product are napkins, tampons and the like. Specific examples of the first aid are gauze, first aid bandages, cotton swabs and the like. Specific examples of the cleaning products include wet tissues, cosmetic cotton, breast milk pads, wiping sheets, sweat absorbing sheets (for face, side, neck, legs, etc.), antibacterial and disinfecting sheets, antiviral sheets, Anti-allergen sheet, antibacterial deodorant sheet, etc. A specific example of the mask is a disposable three-dimensional mask or the like.

  (8) For furniture and interiors, for example, carpets, floorings, curtains, furniture parts, fittings, wallpaper, decorations, etc. may be mentioned. Specific examples of the carpet include carpets, carpet backings, tiled carpets, electric carpets, matte backings, under carpets and the like. As a specific example of the above-mentioned furniture parts, it is a cushioning material, putting cotton etc. of a sitting chair. Specific examples of the fixtures include shoji paper, rattan, tatami mats, blinds and the like. Specific examples of the decorative article include pennants, roll screens, artificial flowers and the like.

  (9) For the wiper, for example, a wiper, a wet wiper, an oil strainer, a copier cleaning material, etc. may be mentioned.

  (10) For filters, for example, air filters, bag filters, liquid filters, electret filters, vacuum cleaner filters, filter press filters, drainage 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 coarse dust, medium-high performance, ultra-high performance and the like.

  (11) Examples of sleeping clothes include futons, pillow covers, sheets and the like. Specific examples of the futon include futon batting, futon bags and the like.

  (12) For agricultural and horticultural use, for example, a sheet for nursery beds, a sheet of solid wood, a sheet for preventing frost, a sheet for preventing grass, a gardening planter and the like can be mentioned.

  (13) For leather, for example, a base fabric for artificial leather, a base fabric for synthetic leather, a base fabric for vinyl chloride leather, etc. may be mentioned.

  (14) For living materials, for example, storage products, packaging materials, cleaning products, bags, food products, household goods, kitchen products, table tops, office supplies, sports products, handicraft products, sheets for DIY, boards for DIY , Ironing mats, beauty materials, etc. Specific examples of the storage article include a storage bag, a suit cover, an insect cover and the like. Specific examples of the packaging material are bath cloth, packaging and the like. Specific examples of the cleaning supplies include chemical wipes, scrubs and the like. Specific examples of the above-mentioned bag are a chemical bag, a desiccant bag, a shopping bag and the like. Specific examples of the food are tea bags, coffee bags, food bags, freshness holding materials, sheets for absorbing water for food, and the like. Specific examples of the household goods include calendars, non-slip sheets, eye masks, cool sheets, warm-feel sheets, neck scarves, gloves, book covers, deodorant sheets, fragrance base materials and the like. Specific examples of the kitchen utensils are draining sheets, cooking paper, scraps, roll towels, fire extinguishing cloth and the like. Specific examples of the table top are a table cloth, a place mat, a coaster and the like. Specific examples of the office supplies are a stamp pad, a felt pen core, a notice board, a blackboard eraser, an envelope and the like. Specific examples of the sporting goods are golf club head covers, tennis grips and the like. The beauty materials include face masks, puffs, beauty packs, beauty gloves and the like.

  (15) For industrial materials, for example, industrial materials, electric materials, batteries, product materials, OA devices, AV devices, rolls, device members, musical instruments, packaging materials and the like can be mentioned. Specific examples of the industrial material include abrasives, oil-absorbing materials, paper-making felts, heat-resistant cushions, drainage materials, heat insulating materials, soundproofing materials, anti-vibration materials and the like. Specific examples of the electrical material include an electrical insulating material, a substrate for a printed circuit board, an electromagnetic wave shielding material, a static electricity removing sheet, a wire pressing and winding tape, and the like. A specific example of the battery is a separator or the like. Specific examples of the product material include an FRP (fiber reinforced plastic) substrate, a tape, a printing substrate, a synthetic paper, an electrostatic recording paper, an adhesive tape, a thermal transfer sheet, a radiation shielding mat and the like. Specific examples of the OA device include a disc liner, a packaging material, and the like. Specific examples of the AV device include a speaker diaphragm, a sound absorbing plate and the like. As a specific example of the said roll, a Bafrole, an application roll, a squeeze roll etc. are mentioned. 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, a hammer rail and the like. Specific examples of the packaging material include packaging materials for dry ice, packing and the like.

  The cyclodextrin-containing sheet of the present invention is particularly useful for medical use such as food tray mats, food packaging sheets, beauty sheets, and sheets for living materials such as insect-repellent sheets (the above (14) etc.), antibacterial and antiviral sheets and the like Hygiene sheets (above (3), (7) etc.), protective sheets for masks etc., medical and hygiene sheets (above (2), (3), (7) etc), cleaning sheets (above (7 (9), (10), etc., and hygienic sheets such as towel ((7) etc.) and the like can be suitably used. Also, without being limited to the above classification, the same cyclodextrin-containing sheet can be used in a wide variety of fields and applications.

(Example of layer configuration suitable for each application of cyclotextrin-containing sheet)
Referring to FIG. 2, an example of a layer configuration suitable for each application of the cyclotextrin-containing sheet of the present 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 a cyclodextrin C having a functional component and a heat fusible resin A, and a non-woven fabric 3010 disposed on both sides thereof. The layer structure consisting of, is shown.

  In this example, the non-woven fabric 3010 is formed by a dry method using wood pulp as a main raw material. The non-woven fabric 3010 may be, for example, a sheet obtained by depositing raw materials using an air laid method and adhering the surface by spraying a binder. As such non-woven fabric, Kinocross (registered trademark) manufactured by Oji Kinocross Co., Ltd. can be used, for example. Such non-woven 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 the performance to retain moisture is high, and it is preferably used.

  FIG.2 (b) shows the example of the structure which can be used suitably for a cold sensation sheet | seat. Specifically, as shown in FIG. 2 (b), a cyclodextrin-containing layer 1010 containing a cyclodextrin C having a functional component and a heat-fusion resin A, and a non-woven fabric disposed on one side of the layer A layer configuration is shown consisting of 3010 and non-woven 3020 and tissue 3030 disposed in this order on the other side.

  In this example, the non-woven 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 absorbent fibers (SAF). It may be. Therefore, the layer of the non-woven fabric 3020 has high moisture absorbability and retention. Here, the cyclodextrin-containing layer 1010 may be present as a layer placed on the surface of the non-woven fabric 3020, or may be present in a form in which a part or all of the fibers constituting the non-woven fabric 3020 are embedded. . That is, the cyclodextrin-containing layer 1010 and the non-woven fabric 3020 may be present separately or in an overlapping portion in the thickness direction of the cyclotextrin-containing sheet. In addition, since the layer of tissue 3030 which is to be the outer layer is thin and low in density, it has good moisture permeability. Furthermore, the tissue 3030 can provide a soft touch. Also, the layer of the non-woven fabric 3010 that is the other outer layer can provide a soft touch. In addition, since the non-woven 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 suitably used for application to be applied to the skin, and tends to easily exert its effect and to be sustained.

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

  In this example, the cyclodextrin-containing layer 1020 is a non-woven layer, and may include pulp and synthetic fibers as fibers, and the synthetic fibers may include polymer absorbent fibers (SAF). Therefore, the cyclodextrin-containing layer 1020 has high water absorbability and retention. In addition, since the layer of tissue 3030 which is to be the outer layer is thin and low in density, it has good moisture permeability. Furthermore, the tissue 3030 can provide a soft touch. Therefore, the sheet having such a configuration is suitably used for application to be applied to the skin, and tends to easily exert its effect and to be sustained. Moreover, layers other than a tissue can also be used as an outer layer, and front and back material can also be provided further on a tissue. For example, one side can be provided with a layer for preventing the outflow of water. Layer 1020 can contain particles in the voids formed by the fibers. Therefore, the layer 1020 may or may not contain the heat-fusible resin A because the particles can be held in the layer without using a resin as a binder. When the heat fusible resin A is contained, there is an effect of reducing powder removal.

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

  In this example, the cyclodextrin-containing layer 1030 is a non-woven layer, and may include pulp and synthetic fibers as fibers, and the synthetic fibers may include polymer absorbent fibers (SAF). Therefore, the cyclodextrin-containing layer 1030 has high water absorbability and retention. In the present example, the cyclodextrin-containing layer 1030 may contain an additive Y. Additive Y may be any inorganic pigment such as zeolite, activated carbon, silica and the like. By selecting a material having antibacterial properties and absorbability as the additive Y, it is possible to promote the effect of the cyclodextrin-containing sheet used for the application such as the perspiration pad.

  The layer of the film 3050 that is the outer layer is impervious or hardly permeable to moisture, so by applying the surface of the optional non-woven fabric 3040 that is the other outer layer to the application site such as human skin, The additive can be effectively acted, and the release of the absorbed fluid such as sweat from the opposite side can be prevented. Note that instead of the film 3050, a highly water-repellent non-woven fabric may be used, and an adhesive layer may be provided on the outer side of the film 3050 (the side opposite to the layer 1030) and used in a garment.

  FIG. 2 (e) shows an example of a configuration that can be suitably used for a cleaning sheet or the like. Specifically, as shown in FIG. 2 (e), a cyclodextrin-containing layer 1040 containing cyclodextrin C having a functional component, heat fusible resin A, fibers and additive Z, and one side thereof. A layer construction is shown consisting of an optional layer 3060, such as a non-woven fabric, film or the like, disposed on

  In the present example, the cyclodextrin-containing layer 1040 is a non-woven layer and contains synthetic fibers as fibers. When the synthetic fiber is used as the main raw material, it is possible to provide a sheet having high sheet strength and good scraping ability (performance to scrape solids). The synthetic fiber may contain a polymer absorbent fiber (SAF) for the purpose of enhancing the liquid absorption property and the liquid retention property, and may contain a water absorbing fiber such as pulp for the purpose of enhancing the liquid absorption property. Also, in the present example, the cyclodextrin-containing layer 1040 may contain the additive Z. The additive Z may be any cleaning component such as citric acid or baking soda. By selecting a component for cleaning as the additive Z, the effect of the cyclodextrin-containing sheet used for applications such as a cleaning sheet can be promoted. In one variation, the cyclodextrin-containing layer 1040 may be provided with a water-permeable or breathable sheet such as a non-woven fabric on the side 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 more specifically described by way of examples, but the present invention is not limited to the following examples.

Example 1
<Production of cyclodextrin-containing sheet>
Core-sheath type heat-sealable composite fiber (PET / PE) in which the core of the short-cut rayon fiber (fineness 3.3 dtex, fiber length 5 mm) and the short-cut core are polyethylene terephthalate (PET) and the sheath is polyethylene (PE) The composite core-sheath fiber, the fineness of 3.3 dtex, the fiber length of 5 mm, and the sheath melting point of 130 ° C. were subjected to disentanglement using a swirl flow jet air flow disintegration device to obtain disintegrated short cut fibers .

  Next, rayon fibers in the form of disintegrated short cut fibers and heat-fusible composite fibers in the form of open disintegrated short cut fibers are uniformly mixed by an air flow at a ratio (mass ratio) of 70/30 to make rayon / ( A fiber mixture (web material) of PET / PE) 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 spreading a particle mixture of material M / PE powder on a carrier sheet, a sheet in which an air-laid web was formed was obtained from the fiber mixture using the web forming apparatus 1 shown in FIG.

Specifically, the first carrier sheet 41 made of tissue (14 g / m ^{2 in} basis weight) is carried by the first carrier sheet supply means 40 on the air permeable endless belt 20 which is mounted on the conveyor 10 and travels. I paid out.

While suctioning the air-permeable endless belt 20 by the suction box 60, the particle mixture of the material M / PE powder is spread to 30 g / m ² on the first carrier sheet 41, and the web raw material is thereon The fiber mixture was dropped and deposited from the supply means 30 along with the air flow. At that time, the fiber mixture was supplied such that the basis weight of the shortcut fiber per air-laid web portion was 230 g / m ² . An air-laid web-containing laminated sheet was obtained by laminating thereon a second carrier sheet 51 made of a tissue (basis weight: 14 g / m ² ).

The obtained laminated sheet was passed through a box type drier of a hot air circulating conveyor oven system, and subjected to hot air treatment at 140 ° C. to obtain a cyclodextrin-containing sheet having a basis weight of 288 g / m ² .

Example 2
Change the shortcut rayon fiber to softwood chemical pulp, and use 70% of softwood chemical pulp and core-sheath type heat-sealable composite fiber (PET / PE composite core-sheath fiber) using an air laid web forming device. A cyclodextrin-containing sheet was obtained in the same manner as in Example 1 except that an air-laid web was formed while uniformly mixing in the air at a ratio (weight ratio) of 10%. The basis weight of the obtained cyclodextrin-containing sheet was 288 g / m ² .

[Example 3]
Change the short-cut rayon fiber to PET fiber (fineness 3.3 dtex, fiber length 5 mm, melting point 260 ° C), change the heat-fusible composite fiber to high density polyethylene fiber (fiber length 1.5 mm, melting point 120 ° C) A cyclodextrin-containing sheet was obtained in the same manner as in Example 1 except that an air-laid web was formed while uniformly mixing these fibers at a 50/50 ratio (mass ratio) in air. 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 to 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 onto the carrier sheet, the material M including the ginger component is mixed with the fiber mixture together with the air flow from the web material supply means 30 so as to be 24 g / m ² While being dropped and deposited, a cyclodextrin-containing sheet was obtained in the same manner as in Example 3 except that the first and second carrier sheets were changed to PET spunbond (basis weight: 15 g / m ² ). The basis weight of the obtained cyclodextrin-containing sheet was 284 g / m ² .

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

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

While suctioning the air-permeable endless belt 20 by the suction box 60, 24 g / m ² of the material M in which the ginger component was included was dispersed on the first carrier sheet 41.

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

The obtained laminated sheet was heat-pressed by an emboss roll having irregularities 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, the material M is sprayed on the air-laid web so as to be 24 g / m ^2, and 5 g of EVA-based adhesive is used. A cyclodextrin-containing sheet was obtained in the same manner as in Example 2 except that melt extrusion was performed to obtain 1 / m ² and the PE film (26 g / m ² ) was bonded. 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 the material Q in which the 1-menthol component was included in cyclodextrin was used instead of the 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 rayon fiber of the shortcut is converted to softwood chemical pulp and polymer absorbent fiber (SAF) Using a modified air-laid web forming apparatus, softwood chemical pulp, polymer absorbent fiber (SAF) and core-sheath type heat-sealable composite fiber (PET / PE composite core-sheath fiber) 35/35/35/35 A cyclodextrin-containing sheet was obtained in the same manner as in Example 1 except that an air-laid web was formed while uniformly mixing in air at a ratio of 30 (mass ratio). The basis weight of the obtained cyclodextrin-containing sheet was 288 g / m ² .

[Example 13]
Material R in which a rose flavor was included in cyclodextrin and polyethylene (PE) powder were mixed at a ratio (weight ratio) of 20/80 to obtain a particle mixture of material R / PE powder. Rayon spunlace (basis weight 28 g / m ² ) was used as the first and second carrier sheets. A particle mixture of material R / PE powder is sprayed onto the first carrier sheet at a rate of 10 g / m ² , on which softwood chemical pulp and core-sheath type heat fusible composite fiber (PET / PE composite) Core-sheath fibers were dropped and deposited while uniformly mixed in air at a ratio (mass ratio) of 70/30 to form an air-laid web. At that time, the fiber mixture was supplied such that the basis weight of the shortcut fiber per air-laid web portion was 60 g / m ² . PE powder was sprayed onto the air-laid web at 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. 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 dispersed 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 Kinocloth (basis weight: 40 g / m ² ) was used as the first and second carrier 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 sprayed, passed through a box type drier of a hot air circulating conveyor oven system, and treated with hot air at 140 ° C. to obtain a cyclodextrin-containing sheet having a basis weight of 76 / m ² .

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

[Example 18]
Spray PE powder at 5 g / m ² on air-laid web, deliver a tissue (14 g / m ² basis weight) as a second carrier sheet, and PE film (26 g / m ² basis weight) on it A cyclodextrin-containing sheet was obtained in the same manner as in Example 11 except that the hot melt resin was applied to 10 g / m ² and pasted. 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 so as to be 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. A cyclodextrin-containing sheet was obtained in the same manner as in Example 2 except that rayon spunlace (basis weight: 28 g / m ² ) was used as the first and second carrier sheets. 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 resulting sheet was cut into 100 mm wide by 100 mm long pieces and placed in a metal vat. The material M (2.4 g) was dissolved in 100 ml of water to obtain an aqueous solution S of the material M. 10 ml of the aqueous solution S 100 ml was placed in a metal vat, the small pieces were dipped, and placed in a dryer at 80 ° C. for 2 hours to be 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 1 of cyclodextrin-containing sheet)
The cyclodextrin-containing sheets obtained in Examples 1 to 20 and Comparative Example 1 were cut into three test pieces each 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 to the vial. The lid of the vial was opened, the odor intensity was determined according to the determination criteria shown in Table 1, and the evaluation was shown numerically. The larger the value, the higher the odor intensity, and the more the functional component 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 into 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 in an oven at 80 ° C. for 2 hours. Each sheet taken out 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 shown numerically. The larger the value, the higher the odor intensity, and the more the functional component released from the cyclodextrin-containing sheet.

(Sensory evaluation of cyclodextrin-containing sheet 3)
The cyclodextrin-containing sheet obtained in Examples 11 and 12 and the sheet obtained in Comparative Example 2 (containing no cyclodextrin) were cut into 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 at room temperature was added to the beaker, and then it was applied to the skin for 5 minutes. The larger the number, the stronger the feeling of coldness.

(Test for mold resistance to food)
The sheet containing the cyclodextrin-containing sheet obtained in Example 19 and the sheet of Comparative Example 2 was placed in a zippered poly bag together with food, allowed to stand at room temperature, visually confirmed for mold growth every week, and day for confirming mold Were recorded (conducted for 4 weeks). If mold could not be confirmed at the 4th week (day 28), the day on which the mold was confirmed was recorded as "28 days or more". As food, commercially available rice cake (lively rice cake, manufactured by Maruzen Co., Ltd.) and bread (very ripe, made by PASCO) were used.

(Deodorant test)
The deodorizing evaluation of 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. Ammonia gas was used as the evaluation gas, and the reduction rate of ammonia gas after one hour was measured. The larger the reduction rate, the higher the deodorizing property.

(Evaluation results)
Tables 3 to 7 show the results of the evaluation test. The average value of the evaluation by seven study 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 that of the comparative example when it was rehydrated after being once moistened and dried. That is, compared with the comparative example, the cyclodextrin-containing sheet of the present invention has less functional components lost due to volatilization and the like between the time of production and the time of testing, and is excellent in sustained release effect of functional components. It is thought that

  In addition, the cyclodextrin-containing sheet of the present invention containing a cyclodextrin in which the 1-menthol component is included exhibited a remarkable cooling effect as compared with Comparative Example 2 in which the cyclodextrin is not contained.

  Furthermore, it was confirmed that cyclodextrin in which the horseradish component having antifungal performance was included released the horseradish component by water in the air or in the food, and showed the antifungal property of the food.

  Moreover, since the cyclodextrin which released the functional component can include other components, it was possible to provide a sheet having a deodorizing performance.

  The cyclodextrin-containing sheet of the present invention has been described above by way of example and not limitation. Cyclodextrins release functional components that they contain by providing water, so the sheet obtained in the present invention can effectively release the functional components by adding water. Although the temperature of the water to be applied is not limited, it may be possible to streamline the release of functional components by raising the water temperature. Cyclodextrin does not release the functional component that it contains in the absence of water, so it can be manufactured and stored without releasing the functional component. For example, when manufacturing using a strong odor functional component, it can prevent that a smell remains in a manufacturing process. In addition, cyclodextrin is capable of stabilizing substances that are weak to ultraviolet light and heat, and substances that are highly volatile in the liquid state, so that deterioration of functional components can be prevented, and functional components can be efficiently released, resulting in long-term activity. It becomes possible to make a sheet that can be stored. Moreover, since the cyclodextrin which released the functional component can include other components, it is possible to provide, for example, a sheet having a deodorizing performance.

  The moisture to be imparted to the sheet obtained in the present invention may be a slight amount to the extent that the sheet becomes wet or an amount by which the entire sheet is immersed. The water to be applied may contain other components as long as it contains water. For example, it may be water contained in body fluid or animals and plants, any liquid artificially mixed, or a liquid containing 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 air-laid web A, B heat fusible resin C cyclodextrin F fiber M material in which ginger component is included in cyclodextrin D Material in which horseradish component is included in cyclodextrin. Q. Material in which l-menthol component is included in cyclodextrin. R. Material in which rose flavor is included in cyclodextrin. S. Aqueous solution of material M. Y, Z Additive 100. Cyclodextrin. Containing layer 110 Cyclodextrin-containing layer containing fiber 120 Cyclodextrin-containing layer containing heat fusible resin A 200 Layer containing heat fusible resin B 300 Other layers 500 Adhesive layer 1010 Cyclocontaining heat fusible resin A Dextrin-containing layer 1020 Containing heat-fusion resin A and fibers Cyclodextrin containing layer 1030 heat fusible resin A and cyclodextrin containing layer containing fiber and additive Y 1040 heat fusible resin A containing cyclodextrin and layer containing additive Z 3010 wood pulp as a main material and dry type Non-woven fabrics 3020 Non-woven fabrics containing pulp and synthetic fibers (which may contain SAF) 3030 tissue 3040 optional non-woven 3050 film 3060 optional layer (film, non-woven etc)

Claims (6)

A cyclodextrin-containing layer including a functional component, wherein the cyclodextrin-containing layer is provided by a dry process ;
The cyclodextrin-containing layer contains fibers,
The powder of cyclodextrin is held in the voids formed by the fibers,
A cyclodextrin-containing sheet in which the cyclodextrin-containing layer is sandwiched between sheets having water absorbability . 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 with the cyclodextrin powder and said heat-fusible resin A, according to claim 1 Cyclodextrin-containing sheet. 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 by heat. The cyclodextrin-containing sheet according to claim 1 or 2 . The cyclodextrin-containing sheet according to any one of claims 1 to 3 , which is heat-sealed. The cyclodextrin-containing sheet according to any one of claims 1 to 4 , wherein an adhesive layer is provided adjacent to the cyclodextrin-containing layer. The cyclodextrin-containing sheet according to any one of claims 1 to 5 , which is embossed.

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