WO2021132316A1 - Thin film, transferring sheet, and transferring sheet container - Google Patents

Abstract

Provided are a thin film, a transferring sheet, and a transferring sheet container that are capable of accommodating diversification in preferences. This thin film has a mass per unit area of from 0.01 g/m2 to 5.0 g/m2, and comprises a retaining layer that retains, as a functional component, a perfume component and/or an antibacterial component. The proportion of the mass of the functional component retained by the retaining layer with respect to the entire mass of the thin film is from 50 ppm to 30%.

Description

Thin film, transfer sheet, and transfer sheet container

The present invention relates to a thin film, a transfer sheet including the thin film, and an accommodating body including the transfer sheet.

A thin film having a thickness of several μm or less has high followability to the surface shape of an adherend such as the skin of a living body, and therefore adheres to the adherend without using an adhesive or an adhesive. It has been proposed to use such a thin film for cosmetic applications such as skin care and make-up, and medical applications such as wound healing (see, for example, Patent Document 1).

JP-A-2017-19116

On the other hand, in order to widely spread thin films as beauty products, medical products, and daily necessities, it is newly required for thin films to respond to diversification of tastes.
An object of the present invention is to provide a thin film, a transfer sheet, and a transfer sheet container capable of responding to diversification of tastes.

The thin film that solves the above problems ^{has a mass per unit area of 0.01 g / m 2} or more and 5.0 g / m ² or less, and includes a holding layer that holds at least one of a fragrance component and an antibacterial component as a functional component. ..

According to the above configuration, when the holding layer holds the fragrance component, the thin film gives off a fragrance. Further, when the retaining layer retains the antibacterial component, the growth of bacteria is suppressed in the adherend to which the thin film is attached, so that the generation of odor caused by the bacteria is suppressed. Therefore, a thin film having a function related to odor is realized, and it becomes possible to cope with the diversification of tastes in the thin film.

In the above configuration, the ratio of the mass of the functional component held by the holding layer to the mass of the entire thin film may be 50 ppm or more and 30% or less.
According to the above configuration, the effect of generating fragrance by the functional component or the effect of suppressing the generation of odor can be preferably obtained.

In the above configuration, the blockage rate, which is the ratio of suppressing the amount of transpiration of water having a temperature equal to the human body temperature at the place where the thin film is placed to the amount of transpiration when the thin film is not placed, is It may be 5% or more and 60% or less.

According to the above configuration, the diffusion of the functional component to the outside proceeds at a suitable speed.
In the above configuration, the thin film may contain a biocompatible material.
According to the above configuration, a thin film suitable for attachment to a living body is realized.

In the above configuration, a diffusion suppression layer that suppresses the diffusion of the functional component may be provided.
According to the above configuration, the sustained release property of the functional component is enhanced.
In the above configuration, the two diffusion suppressing layers may be provided, and the holding layer may be sandwiched between the two diffusion suppressing layers.

According to the above configuration, the sustained release property of the functional component can be enhanced, and when the adherend is a living body, the stimulation given to the living body by the functional component can be suppressed.
In the above configuration, the thin film may have an uneven structure on the surface of the film.

According to the above configuration, since the diffusion of the functional component to the outside is promoted, the sustained release property of the functional component can be adjusted.
In the above configuration, the thin film may be formed with through holes that penetrate at least one of the layers included in the thin film.

According to the above configuration, since the diffusion of the functional component to the outside is promoted, the sustained release property of the functional component can be adjusted.
In the above configuration, the retaining layer may contain capsules containing the functional ingredient.

According to the above configuration, the sustained release property of the functional component is enhanced.
In the above configuration, the thin film may contain a diffusion inhibitor that suppresses the diffusion of the functional component.

According to the above configuration, since the diffusion of the functional component to the outside is suppressed, the sustained release property of the functional component can be adjusted.
The transfer sheet that solves the above problems includes the thin film and a supporting base material that supports the thin film.

According to the above configuration, since the thin film is supported by the supporting base material, the deformation of the thin film is suppressed and the thin film becomes easy to handle.
The transfer sheet container that solves the above problems includes the transfer sheet and a package that houses the transfer sheet.

According to the above configuration, since the transfer sheet is housed in the package, the diffusion of the functional components before the use of the transfer sheet is suppressed.

According to the present invention, it is possible to cope with the diversification of tastes in a thin film.

The figure which shows the cross-sectional structure of the thin film in one Embodiment of a thin film. The figure which shows the cross-sectional structure of the thin film of 1st form. The figure which shows the cross-sectional structure of the thin film of 2nd form. The figure which shows the cross-sectional structure of the thin film of 3rd form. The figure which shows the cross-sectional structure of the thin film of 4th form. The figure which shows the cross-sectional structure of the thin film of 5th form. The figure which shows the cross-sectional structure of the thin film of 6th form. The figure which shows the cross-sectional structure of the thin film of 7th form. The figure which shows the cross-sectional structure of the transfer sheet of one Embodiment. The figure which shows the perspective structure of the transfer sheet accommodating body of one Embodiment.

An embodiment of a thin film, a transfer sheet, and a transfer sheet container will be described with reference to the drawings.
In recent years, as an example of diversification of tastes, many products related to odors have been sold. For example, fragrances used for the human body such as perfumes, parfums, and eau de parfums, and various forms such as room fragrances are provided to give off fragrance. Fragrant products contain natural and synthetic fragrances. In addition, products for the purpose of removing unpleasant odors such as body odor and daily life odor are also provided. Products for removing odors include, for example, a chemical deodorizing method that chemically decomposes a specific odorous component, or a physical deodorizing method that prevents the odorous component from diffusing by including or adsorbing a specific odorous component. The odor method is used. In addition, in products for removing odors, biological deodorant methods that suppress the growth of bacteria that emit a specific odor, and sensory methods that use other scents such as masking and pairing to eliminate the odor. A deodorant method is also used.

However, since many of these odor-related products are liquid, the components for fragrance and deodorization tend to volatilize. In addition, when a liquid product is sprayed onto the skin by spraying, the above-mentioned components may flow due to sweat or the like, or the above-mentioned components may be transferred to the clothes when the clothes and the skin rub against each other. .. Therefore, there is a demand for new products that handle odors. In the present embodiment, by imparting a function related to odor to a thin film, a new product for handling odor is provided, which corresponds to diversification of tastes.

[Composition of thin film]
As the form of the thin film, seven forms of the first form to the seventh form will be described. First, the features of the thin film of the present embodiment common to these embodiments will be described.

As shown in FIG. 1, the thin film 10 includes a first surface 11F to be attached to an adherend and a second surface 11R which is a surface opposite to the first surface 11F. The second surface 11R is the outermost surface located on the opposite side of the adherend when the thin film 10 is attached to the adherend. The thin film 10 is composed of one or more layers including a holding layer that retains a functional component that is a fragrance component or an antibacterial component.

The thin film 10 is thin enough to exhibit adhesiveness to the adherend by itself, in other words, the mass per unit area is small enough to exhibit the adhesiveness. Specifically, the mass per unit area of the thin film 10 is 5.0 g / m ² or less. When the mass per unit area is 5.0 g / m ² or less, the thin film 10 can follow the surface shape of the adherend well, so that the adhesion between the thin film 10 and the adherend is improved. Be done. Further, when the adherend is skin, if the mass per unit area of the thin film 10 is 5.0 g / m ² or less, the user feels that the skin is pulled by the portion where the thin film 10 is attached. Is hard to remember.

The mass of the thin film 10 per unit area is 0.01 g / m ² or more. When the mass per unit area is 0.01 g / m ² or more, the strength of the thin film 10 can be obtained satisfactorily, so that defects such as tearing are less likely to occur in the thin film 10. Further, when the mass per unit area is 0.01 g / m ² or more, it is easy to form the thin film 10 in the form of a continuous film.

The mass per unit area is the mass of the thin film 10 converted per portion having an area of ^{1 m 2 in a plan view.} The mass per unit area can be obtained, for example, by converting from the average value of the mass measured in a plurality of measurement regions, or by multiplying the average value of the film thickness of the thin film 10 by the density of the thin film 10. The density of the thin film 10 is, for example, 1 g / cm ³ or more and 3 g / cm ³ or less.

In the thin film 10, the blockage rate, which is a parameter indicating low gas permeability, is preferably 5% or more and 60% or less. The occlusion rate is a ratio of suppressing the amount of transpiration of water having a temperature equal to the human body temperature at the place where the thin film 10 is placed to the amount of transpiration when the thin film 10 is not placed. A high occlusion rate means that there are few paths through which gas molecules can permeate in the thin film 10, that is, the functional components contained in the thin film 10 volatilize and go out of the thin film 10. It means that it is difficult.

When the blockage rate is 5% or more, diffusion of the functional component to the outside of the thin film 10 is suppressed in a short time, and the sustained release property of the functional component can be obtained well. When the obstruction rate is 60% or less, the diffusibility of the functional component can be obtained to the extent that the aroma and antibacterial functions of the functional component are sufficiently exhibited. In particular, when the functional component contains a fragrance component that easily volatilizes, the above-mentioned effect is highly obtained when the blockage rate is 5% or more and 60% or less.

Also, the higher the blockage rate, the more the evaporation of water from the surface of the adherend is suppressed. For example, when the thin film 10 is used for beauty purposes and the thin film 10 is attached to the skin, if the obstruction rate is 5% or more, the thin film 10 can be attached to obtain a good moisturizing effect on the skin. .. Further, in medical applications, when the thin film 10 is used for a moisturizing therapy that improves the wound healing environment by moistening or a closed sealing method that enhances drug penetration into the skin, if the occlusion rate is 30% or more, the thin film 10 Can be suitably formed on the surface of the living tissue in a state of excess water by attaching the above to the surface of the living tissue. Therefore, the healing promoting effect in a moist environment and the penetration promoting effect of the drug can be satisfactorily obtained.

The blockage rate is determined by using the reference water transpiration amount corresponding to the transpiration amount when the thin film 10 is not arranged and the target water transpiration amount corresponding to the transpiration amount when the thin film 10 is arranged. Calculated by A).

Blockage rate (%) = (reference amount of water evaporation-target amount of water evaporation) / reference amount of water evaporation x 100 ... formula (A)
Each water evaporation amount is measured by the following method.

(1) Circulate hot water in a water bath kept at 37 ° C in a container having an arbitrary volume. A glass bottle is placed in the container, and warm water at 37 ° C. is placed in the glass bottle up to a position 4 cm vertically away from the opening of the glass bottle.

(2) Place a plastic plate with a hole with a diameter of 10 mm in the opening of the glass bottle in (1) above, and place a PTFE membrane filter (manufactured by Merck Millipore, hole diameter: 10 μm, diameter: 25 mm, plain white) in the hole. Cover and leave for 5 minutes.

(3) Using a percutaneous moisture evapotranspiration measuring device (ASCH JAPAN: VAPO SCAN AS-VT100RS), adjust the probe to a diameter of 10 mm, and adjust the probe to the diameter of 10 mm, and the moisture at the position of the hole in the plastic plate after the operation of (2) above. The amount of evapotranspiration is measured on a membrane filter, and the measured value is used as the reference amount of water evapotranspiration.

(4) The thin film 10 is attached on the membrane filter in (2) above. Then leave it for 5 minutes. A transfer sheet provided with the thin film 10 is used for attaching the thin film 10.

(5) Using the percutaneous moisture evapotranspiration amount measuring instrument, the moisture evapotranspiration amount at the position of the hole of the plastic plate after the operation of the above (4) is measured on the thin film 10 in the same manner as the above (3). , Let the measured value be the target water evapotranspiration amount.

Hereinafter, the thin films 10 of the first to seventh forms will be described in order.
FIG. 2 shows the structure of the thin film 10A, which is the thin film 10 of the first form. The thin film 10A includes only a holding layer 20 that retains the functional components. In the first form, both the first surface 11F and the second surface 11R are surfaces of the holding layer 20.

The holding layer 20 contains a functional component in a state of being mixed with a polymer material. In other words, in the holding layer 20, the functional component is contained in the network of polymer materials, that is, in the gaps between the polymer chains.

A known material is used as the polymer material constituting the holding layer 20. For example, the polymer materials constituting the holding layer 20 include polyester, polyolefin, polyamide, polyimide, polyvinyl alcohol, polyurethane, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polycarbonate, acrylic resin, polysiloxanes, cellulose and chitin. Polysaccharides such as and chitosan, various proteins such as casein, rubber, derivatives of these polymer compounds, modified products, copolymers, and mixtures. The polymer material constituting the holding layer 20 may be selected in consideration of the affinity with the functional component, the holding ability of the functional component, the function of improving the blockage rate, and the like. When the adherend is a living body, it is preferable that the polymer material constituting the holding layer 20 has biocompatibility.

The functional ingredient is at least one of a fragrance ingredient and an antibacterial ingredient. When the holding layer 20 contains a fragrance component, the fragrance is released from the thin film 10. Further, since the holding layer 20 contains an antibacterial component, the growth of bacteria is suppressed in the adherend to which the thin film 10 is attached, and as a result, the generation of odor caused by the bacteria is suppressed.

The ratio of the total mass of the functional components contained in the thin film 10A to the total mass of the thin film 10A is preferably 50 ppm or more and 30% or less. When the mass ratio of the functional component is 50 ppm or more, the effect of the functional component, that is, the fragrance effect of the fragrance component and the antibacterial effect of the antibacterial component can be obtained well, and the sustainability of the effect of the functional component can be obtained well. Be done. When the mass ratio of the functional component is 30% or less, the effect of the functional component becomes excessive, for example, the aroma becomes too strong, and when the adherend is a living body, the function is suppressed. The irritation given to the living body by the ingredients can be suppressed.

As a fragrance component, a compound that emits aroma is used. Examples of such compounds include acetals, alcohols, aldehydes, ethers, esters, carboxylic acids, glycols, ketones, nitrogen compounds, nitro compounds, phenylpropanoids, phenols, lactones, and halogenated compounds. Examples of each compound of hydrocarbons. In addition, aliphatic hydrocarbons and aromatic hydrocarbons that emit fragrances other than these may be used as fragrance components.

Examples of acetal compounds are phenylacetaldehyde dimethyl acetal, hydratropaldehyde dimethyl acetal, and [S, (-)] -7-hydroxy-3,7-dimethyloctanal dimethyl acetal.

Alcohol compounds include, for example, nerol, borneol, geraniol, citronerol, farnesol, nerolidol, furfuryl alcohol, fencol, 2-octanol, 2-heptanol, linalol, benzyl alcohol, 1-octanol, isopregol, l-menthol. , Phenylethyl alcohol, terpineol, pelargol, nonanol, 3-phenyl-1-propanol, 1-decanol, phenoxyethanol, santaroll, 10-undecene-1-ol, 1-undecanol, cinnamyl alcohol, sedrol, bisabolol, 1- Dodecanol.

Aldehyde compounds include, for example, hydroxycitronalal, octanal, salicylaldehyde, heptanal, phenylethenal, nonanal, citroneral, 2-phenylpropionaldehyde, decanal, phenylpropionaldehyde, undecanal, citral, 2-methylundecanal. , Anisaldehyde, cinnamaldehyde, dodecanaldehyde, cyclamenaldehyde, citronellyloxyacetaldehyde, piperonal, α-hexylcinnamaldehyde, vanillin, ethyl vanillin, cuminaldehyde.

The ether compounds are, for example, diphenyl ether, 2-methoxynaphthalene, safrole, isosafrole, isoeugenol methyl ether, 2-ethoxynaphthalene, cineole, and benzyl isoamyl ether.

The esters compounds include, for example, geranyl acetate, ethyl 3-methyl-3-phenyloxylan-2-carboxylate, amyl butyrate, ethyl acetoacetate, ethyl heptate, heptyl formate, octyl formate, methyl benzoate, benzyl formate, Bornyl formate, ethyl benzoate, phenylethyl acetate, diethyl succinate, octyl acetate, linaryl formate, ethyl phenylacetate, benzyl acetate, methyl formate, methyl salicylate, phenylethyl formate, methyl 2-octylate, p-tolyl acetate, linaryl Acetate, nonyl acetate, bornyl acetate, isobornyl acetate, ethyl nonanoate, menthyl acetate, isobornyl propionate, bornyl propionate, ethyl propionate, benzyl propionate, terpinyl acetate, isobutyl benzoate, phenethyl acetate, linaryl Propionate, Geranyl formate, Citroneryl acetate, Bicycloisobutyrate, Bertenex, Penetyl propionate, Linaryl isobutyrate, Citroneryl propionate, Penetyl isobutyrate, benzyl isobutyrate, Isobutyl phenylacetate, Geranyl propionate , DL-diethyl malate, 3-phenylpropyl acetate, isoamyl benzoate, isobutyl salicylate, benzyl isovalerate, isoamyl phenylacetate, methyl cinnate, amyl benzoate, 4-methoxybenzyl acetate, cinnamyl acetate, 10-undecenoic acid Methyl, 3,7-dimethyl-6-octenyl isobutyrate, ethyl silicate, dimethylphthalate, diethyl l- (+)-geranyl tartrate, geranyl isobutyrate, ethyl 10-undecenoate, isoamyl salicylate, eugenol acetate, isobutyl silicate, Benzyl phenylacetate, geranyl tiglycate, triethyl citrate, diethyl phthalate, benzyl benzoate, 2-phenylethyl phenylacetate, benzyl salicylate, benzyl cinnate, linaryl acetate, ethyl furancarboxylate.

Compounds of carboxylic acids are, for example, phenylacetic acid, cinnamic acid, and benzoic acid.
Glycol compounds are, for example, propylene glycol and dipropylene glycol.

Ketone compounds include, for example, carboxylic, α-yonone, β-yonone, 2-undecanone, 2-butanone, D-fenchone, tsujeong, menthone, acetophenone, camphor, pregon, methylacetophenone, acetoanisol, benzylideneacetone, α. -Methylionone, exalton, muscone, benzophenone, 2'-acetophenone, cis-jasmon, sedanolide.

Nitrogen compounds are, for example, 6-methylquinoline, methyl N-methylanthranilate, methyl anthranilate, indol, skatole.
Nitro compounds are, for example, musk ambrette, musk xylene, musk ketone.

Compounds of phenylpropanoids are, for example, methyl eugenol, estragole, anethole, eugenol, isoeugenol.
Phenolic compounds are, for example, thymol, dimethylhydroquinone, ethyl salicylate, carvacrol.

Lactone compounds are, for example, γ-undecalactone, γ-nonanolactone, coumarin, 6-methylcoumarin, cyclopentadecanolide.
Halogenated hydrocarbons are, for example, bromostyrol, α-trichloromethylbenzyl acetate.

Examples of aliphatic hydrocarbons other than the above include caryophyllene, α-cadinene, limonene, and cedrene. Examples of aromatic hydrocarbons other than the above include diphenylmethane.

Examples of the antibacterial component include salicylic acid, salicylic acid compounds such as sodium salicylate and phenyl salicylate, sorbic acid compounds such as sorbic acid and potassium sorbate, parachloromethacresol, hexachlorophene, benzalkonium chloride, benzethonium chloride and chlorhexidine chloride. 3-Methyl-4-isopropylphenol, o-simene-5-ol, N-cocoyl-L-arginine ethyl ester pyrrolidone carboxylate, sodium benzoate, Photosensitizer 101, Photosensitizer 201, Photosensitizer 401 , Candida bonbicola / (glucose / rapeseed oil fatty acid methyl) fermented product, chlorhexidine gluconate, chlorhexidine, hexyl dimethylol propionate, lauryl isoquinolinium bromide, thiantol, paraoxybenzoic acid esters, phenoxyethanol, 3-methyl-1 Carbanilide compounds such as 3-butanediol, paradimethylaminostylylheptylmethylthiazolium iodide, resorcin, and trichlorocarbane, metal materials with antibacterial properties such as copper and silver, organic metal compounds and oxides of these metal materials, Examples thereof include a material in which these metal materials are supported on zeolite. Further, among the above-mentioned fragrance components, compounds having antibacterial properties such as benzoic acid, thymol, and carvacrol can also be used as antibacterial components.

The holding layer 20 may contain a plurality of types of substances as functional components. Further, the holding layer 20 may contain both a fragrance component and an antibacterial component as a functional component, or may contain a substance that functions as both a fragrance component and an antibacterial component.

In the first form, the thin film 10A may include a plurality of holding layers 20. If the plurality of holding layers 20 are configured to contain substances different from each other as functional components, even if a plurality of substances are difficult to be contained in one layer, these substances can be contained in one thin film 10A. is there.

Further, among the plurality of holding layers 20, the layer closer to the second surface 11R causes the functional component to diffuse to the outside earlier. Therefore, for example, if the plurality of holding layers 20 are configured to contain different fragrance components, it is possible to realize a thin film 10A in which the fragrance emitted changes with the passage of time. Further, if the plurality of holding layers 20 are configured to contain fragrance components having different concentrations, the intensity of fragrance can be adjusted over time by adjusting the concentration of the fragrance components contained in each holding layer 20. Is.

Further, if the holding layer 20 having the first surface 11F contains an antibacterial component and the holding layer 20 having the second surface 11R contains an aromatic component, the growth of bacteria on the surface of the adherend can be suppressed. , Fragrance is likely to occur. That is, since each component is contained in the holding layer 20 at a position corresponding to its function, the effect of each component is preferably exhibited.

FIG. 3 shows the structure of the thin film 10B, which is the thin film 10 of the second form. The thin film 10B includes a diffusion suppressing layer 30 in addition to the holding layer 20. In the second form, the first surface 11F is the surface of the holding layer 20, and the second surface 11R is the surface of the diffusion suppressing layer 30. That is, when the thin film 10B is attached to the adherend, the holding layer 20 is in contact with the adherend, and the diffusion suppressing layer 30 is located on the side opposite to the adherend with respect to the holding layer 20.

The diffusion suppression layer 30 contains a polymer material and does not contain any functional component. A known material is used as the polymer material constituting the diffusion suppression layer 30. For example, the polymer materials constituting the diffusion suppression layer 30 include polyester, polyolefin, polyamide, polyimide, polyvinyl alcohol, polyurethane, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polycarbonate, acrylic resin, polysiloxanes, cellulose and the like. Polysaccharides such as chitin and chitosan, various proteins such as casein, rubber, derivatives of these high molecular compounds, modified products, copolymers, and mixtures.

The diffusion suppression layer 30 has a function of suppressing the diffusion of the functional component contained in the holding layer 20 to the outside, particularly a function of suppressing the diffusion of the fragrance component to the side opposite to the adherend with respect to the thin film 10B. By providing the diffusion suppression layer 30, the sustained release property of the functional component to the side opposite to the adherend is enhanced. That is, when the functional component is a fragrance component, the duration of the fragrance becomes long.

The sustained release property of the functional component can be adjusted depending on the material, thickness and density of the diffusion suppression layer 30. For example, by using a material having a low affinity for the functional component as the material of the diffusion suppressing layer 30, the diffusion of the functional component is further suppressed and the sustained release property of the functional component is enhanced. For example, when the functional component is hydrophilic, a hydrophobic material may be used as the material for the diffusion suppression layer 30. Further, by increasing the thickness and density of the diffusion suppression layer 30, the sustained release property of the functional component can be enhanced.

FIG. 4 shows the structure of the thin film 10C, which is the thin film 10 of the third form. In addition to the holding layer 20, the thin film 10C includes a first diffusion suppressing layer 30 which is a diffusion suppressing layer 30 of the second form, and a second diffusion suppressing layer 31. The holding layer 20 is sandwiched between the first diffusion suppressing layer 30 and the second diffusion suppressing layer 31. In the third form, the first surface 11F is the surface of the second diffusion suppression layer 31, and the second surface 11R is the surface of the first diffusion suppression layer 30. That is, when the thin film 10C is attached to the adherend, the second diffusion suppressing layer 31 is in contact with the adherend, and the first diffusion suppressing layer 30 is located on the opposite side of the holding layer 20 from the adherend. To do.

The second diffusion suppression layer 31 contains a polymer material and does not contain any functional component. A known material is used as the polymer material constituting the second diffusion suppression layer 31. For example, the polymer materials constituting the second diffusion suppression layer 31 include polyester, polyolefin, polyamide, polyimide, polyvinyl alcohol, polyurethane, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polycarbonate, acrylic resin, and polysiloxanes. Polysaccharides such as cellulose, chitin and chitosan, various proteins such as casein, rubber, derivatives of these high molecular compounds, modified products, copolymers and mixtures. When the adherend is a living body, it is preferable that the polymer material constituting the second diffusion suppression layer 31 has biocompatibility.

The second diffusion suppressing layer 31 has a function of suppressing the functional components included in the holding layer 20 from diffusing toward the adherend. Further, by providing the second diffusion suppressing layer 31, when the adherend is a living body, the stimulation received by the adherend from the functional component can be reduced.

When the adherend is a living body, particularly the skin of a living body, the second diffusion suppressing layer 31 may contain a body odor adsorbent which is a material for adsorbing a component causing body odor. As the body odor adsorbent, for example, porous silica such as mesoporous silica or nanoporous silica, activated carbon, zeolite and the like can be used. As a result, the generation of body odor is suppressed in the vicinity of the portion where the thin film 10C is attached.

In the second form and the third form, the diffusion suppression layers 30 and 31 may be composed of a plurality of layers. Further, when it is desired to suppress the diffusion of the functional component toward the adherend, the thin film 10 includes a diffusion suppressing layer 31 having a first surface 11F and a holding layer 20 having a second surface 11R. May be good. Further, the diffusion suppression layer 30 having the second surface 11R may be a metal film.

When the thin film 10 includes the holding layer 20 and the diffusion suppressing layer, the ratio of the total mass of the functional components to the total mass of the thin film 10 including the diffusion suppressing layer may be 50 ppm or more and 30% or less.

FIG. 5 shows the structure of the thin film 10D, which is the thin film 10 of the fourth form. The thin film 10D has an uneven structure 40 on the second surface 11R. FIG. 5 shows the structure of the thin film 10D when the layer structure corresponding to the thin film 10A of the first form, that is, the structure including only the holding layer is applied. In this case, the thin film 10D includes a holding layer 21 having an uneven structure 40 on the surface of the second surface 11R. The material of the holding layer 21 is the same as the material of the holding layer 20 of the first form.

The layer structure of the thin film 10B of the second form and the layer structure of the thin film 10C of the third form may be applied to the fourth form. In these cases, the thin film 10D includes a diffusion suppression layer having an uneven structure 40 on the surface of the second surface 11R.

The antibacterial component of the present invention may contain a component effective for treating various diseases. Skin diseases include staphylococcal burn-like skin syndrome, infectious pyoderma, mizuibo, water bug, atopic dermatitis, seborrheic dermatitis, diaper rash, polymorphic erythema, acne, tan poison, gas necrosis, Kaposi varicella. Dermatitis, Candida diaper dermatitis, Candida interstitial rash, Candida interdigital rash, Malassezia folliculitis, armpit, infectious genital dermatitis, crotch tinea, erythema erythema, tinea vulgaris, hair vulgaris Acne, body tinea, peritonitis, head tinea, skin allergic vasculitis, skin tuberculosis, cutaneous acid bacillus infection, folliculitis, boil, buttock chronic pyoderma, dermatitis, adolescent flat boil , Skin non-tuberculous mycobacteriosis, herpes, anal Bowen's disease, cancer precursors, hair loss, blemishes, scalp eczema, lipitis, toxic eczema, punctate keratolysis, boil, candidiasis, etc. .. It is known that these diseases are caused by bacteria, viruses, and fungi.

Bacteria, viruses, and fungi that cause the above diseases include Staphylococcus aureus, Candida, Escherichia coli, various streptococci, rickettsia, acne, various filamentous fungi, non-tuberculous acidophilic bacteria, Staphylococcus epidermidis, Klebsiella, and early influenza. Examples include fungi, Welsh, corinebacterium minutissimum, infectious soft tumor virus, simple herpesvirus, human papillomavirus, tinea bacillus, and malacetia. Examples of antibacterial agents, antiviral agents, and antifungal agents against these include nadifloxacin, ozenoxacin, isoconazole nitrate, neticonazole hydrochloride, oxyconazole nitrate, hydrocortisone, diflucortron valerate, tribesoside, lidocaine, sodium fushidate, natamycin Penicillin, tetracycline, mupyrosine, cephem, aminoglycoside, natamycin, ozenoxacin, acyclovir, amhotericin, amorolphin hydrochloride, isoconazole nitrate, itraconazole, eficonazole, neticonazole hydrochloride, oxyconazole nitrate, crotrimazole, ketoconazole, ketoconazole Sulconazole nitrate, terbinafine hydrochloride, tornaftar, bihonazole, pimalysin, butenafin hydrochloride, myconazole nitrate, lanoconazole, lylanafate, luriconazole, crotrimazole, ketoconazole, terbinafine hydrochloride, bihonazole, fluconazole, lactinyl lactic acid. , Tetracycline hydrochloride, penicillin, acrinol, methyl paraoxybenzoate, cephim, penicillin, carbapenem, aminoglycoside, macrolide, natamycin, quinolone, newquinolone, glycopeptide, salicylic acid, acyclovir, bidarabin , Monochloroacetic acid, salicylic acid, active vitamin D3, eficonazole, ketoconazole, lanoconazole, terbinafine hydrochloride, luriconazole, itraconazole, fluconazole and the like.

Since the uneven structure 40 is provided on the second surface 11R, the surface area of the second surface 11R is increased, and as a result, the diffusion of the functional component from the second surface 11R is promoted. Therefore, the degree of sustained release of the functional ingredient, particularly the degree of sustained release of the fragrance component can be adjusted more finely. For example, in the first form without the uneven structure, the sustained release property of the fragrance component is smaller than the desired degree, and in the second form without the uneven structure, the sustained release property of the fragrance component is larger than the desired degree. In the fourth form to which the two forms of layer structure are applied, that is, the thin film 10D having a diffusion suppressing layer provided with an uneven structure, sustained release of the fragrance component closer to a desired degree can be obtained.

The uneven structure 40 does not have to be provided on the entire surface of the second surface 11R. By adjusting the size of the region where the concave-convex structure 40 is provided, it is also possible to finely adjust the sustained release property of the functional component.

FIG. 6 shows the structure of the thin film 10E, which is the thin film 10 of the fifth form. The thin film 10E has a plurality of through holes 41 penetrating one or more layers. FIG. 6 shows the structure of the thin film 10E when the layer structure corresponding to the thin film 10A of the first form, that is, the structure including only the holding layer is applied. In this case, the thin film 10E includes a holding layer 22 having a through hole 41 penetrating from the first surface 11F to the second surface 11R. The material of the holding layer 22 is the same as the material of the holding layer 20 of the first form.

Since the through hole 41 is provided, the functional component volatilizes from the holding layer 22 and easily goes out of the thin film 10E. This also promotes the diffusion of the functional component, particularly the diffusion of the fragrance component, so that the degree of sustained release of the fragrance component can be finely adjusted. By adjusting the number and distribution of the through holes 41, it is possible to finely adjust the sustained release property of the fragrance component.

The layer structure of the thin film 10B of the second form and the layer structure of the thin film 10C of the third form may be applied to the fifth form. In these cases, the through hole 41 may penetrate from the first surface 11F to the second surface 11R, or may penetrate a part of the layers. For example, the through hole 41 may penetrate only the diffusion suppression layer having the second surface 11R. In order to promote the diffusion of the fragrance component, it is preferable that the layer having the second surface 11R is provided with the through hole 41.

FIG. 7 shows the structure of the thin film 10F, which is the thin film 10 of the sixth form. The thin film 10F includes a holding layer 23 containing the capsule 42, and the functional component is held inside the capsule 42. Capsules 42 are microcapsules or nanocapsules.

In the holding layer 23, the plurality of capsules 42 are dispersed in the polymer material. As the polymer material constituting the holding layer 23, the polymer material exemplified as the material of the holding layer 20 of the first form is used. As the functional component, among the substances exemplified in the first form, a substance that can be included in the capsule 42 is used. The capsule 42 may be formed from a known microcapsule or nanocapsule material.

By retaining the functional component in a state where the holding layer 23 is encapsulated in the capsule 42, the sustained release property of the functional component is enhanced. Instead of inclusion in the capsule 42, the functional component may be supported on a carrier.

The sixth form may be combined with the second to fifth forms. That is, the holding layer in the second to fifth forms may be a holding layer containing the capsule 42 in which the functional component is included.
FIG. 8 shows the structure of the thin film 10G, which is the thin film 10 of the seventh form. The thin film 10G includes a holding layer 24 containing diffusion inhibitors 43 and 44 together with functional components mixed with the polymer material.

The diffusion inhibitor is a substance that inhibits the functional component from leaving the thin film 10G. For example, the diffusion inhibitor suppresses the diffusion of the functional component, particularly the diffusion of the fragrance component, by blocking the path of the functional component toward the outside of the thin film 10G. The diffusion inhibitor is, for example, a layered inorganic compound, inorganic compound particles, organic compound particles, an organic-inorganic hybrid material, or the like. FIG. 8 illustrates a configuration in which the holding layer 24 contains a layered diffusion inhibitor 43 and a particulate diffusion inhibitor 44, but the diffusion inhibitor has a shape different from that of the layered or particulate. You may be doing it. Further, the diffusion inhibitor contained in the holding layer 24 may be one kind or two or more kinds.

As the layered inorganic compound, fine pieces of clay minerals such as mica, montmorillonite, saponite, hectorite, fluorohectorite and other smectites, kaolinite and other kaolins, micadiaite, kenyaite and kanemite can be used. These clay minerals are mainly composed of layered silicate minerals. The layered inorganic compound can also be used as an organic-inorganic hybrid material by performing organic modification between layers. In addition, as the organic-inorganic hybrid material, various silicones and various silane coupling agents can be used.

As the inorganic material constituting the inorganic compound particles, metals such as Si, Al, Cu, and Ag and oxides thereof can be used. As the organic material constituting the organic compound particles, polyester, polypropylene, polyethylene, polystyrene, polyurethane, acrylic resin, copolymers thereof, blended resin and the like can be used. The shape of the particles is not particularly limited.

As the polymer material and the functional component constituting the holding layer 23, the polymer material and the functional component exemplified as the material of the holding layer 20 of the first form are used.
Since the retention layer 23 contains a diffusion inhibitor, the sustained release property of the functional component can be enhanced. The degree of sustained release of the functional component can be adjusted by adjusting the type and content of the diffusion inhibitor to be contained.

Further, since the holding layer 23 contains a diffusion inhibitor, the blockage rate of the thin film 10G can be increased. The magnitude of the occlusion rate can be adjusted by adjusting the type and content of the diffusion inhibitor to be contained.

The seventh form may be combined with the second to sixth forms. That is, the retention layer in the second to sixth forms may be a retention layer containing a diffusion inhibitor. When the thin film 10 includes a diffusion inhibitory layer, the diffusion inhibitory layer may contain a diffusion inhibitor instead of the retention layer or in addition to the retention layer. With such a configuration, it is possible to increase the sustained release property of the functional component and increase the blockage rate of the thin film 10.

In any of the first to seventh forms, the holding layer or the diffusion suppressing layer may contain an additive. The additives include, for example, a high refractive index material, a low refractive index material, a light absorber, a dye for adjusting the optical characteristics of the thin film 10, a modifier for adjusting the wettability of the thin film 10, and conductivity. Sexual materials, cosmetic ingredients, medicinal ingredients, etc. The additive contained in the thin film 10 may be selected according to the function to be expressed in the thin film 10.

In the first to seventh forms, each layer included in the thin film 10 is formed by a known thin film forming method. For example, a melt extrusion method in which a molten material is extruded to form a thin film, or a solution casting method in which a solution of the material is applied to a base material in a thin film and then the solvent is evaporated can be used. The method for forming each layer may be selected according to the material of each layer.

For example, when the solution casting method is used, a coating liquid is generated by dissolving or dispersing the material of the holding layer in an appropriate solvent, and the coating liquid is applied to a base material made of a resin or the like to form a coating film. A retaining layer is formed by solidifying the coating film by drying. As the coating method, for example, various coating methods such as direct gravure, reverse gravure, small diameter reverse gravure, Meyer coat, die, curtain, spray, spin coat, screen printing, comma, knife, gravure offset, roll coat can be used. Is.

The diffusion suppression layer is also formed by the same method. When the thin film 10 has a plurality of layers, the application of the coating liquid and the drying of the coating film are repeated for each layer to form a laminated body.
The concavo-convex structure 40 of the fourth form forms a coating film on a substrate on which the concavo-convex shape is formed, presses a plate on which the concavo-convex shape is formed before or after drying the coating film against the surface of the film, or coats the coating film. It can be formed by performing surface treatment such as scratching the film surface after drying.

The through hole 41 of the fifth form can be formed by performing a hole drilling process after the coating film is dried. When the thin film 10 has a plurality of layers, a hole may be formed in the entire thin film 10 after laminating each layer to form a through hole 41 penetrating the entire film, or before laminating each layer. A hole may be drilled in a part of the layers to form a through hole 41 penetrating the part of the layers.

[Structure of transfer sheet]
The transfer sheet is used when the thin film 10 is attached to an adherend.
As shown in FIG. 9, the transfer sheet 50 includes a thin film 10 and a supporting base material 51 that supports the thin film 10. The second surface 11R of the thin film 10 is in contact with the support base material 51.

The support base material 51 has a function of suppressing deformation of the thin film 10 when the thin film 10 is stored or when the thin film 10 is moved onto the adherend when the thin film 10 is used. By being supported by the supporting base material 51, the thin film 10 becomes easy to handle.

The material of the support base material 51 is not particularly limited. The supporting base material 51 is preferably, for example, a polymer film, a woven fabric, a knitted fabric, a non-woven fabric, or paper.
Materials for polymer films include various proteins such as polyester, polyolefin, polyamide, polyimide, polyvinyl alcohol, polyurethane, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polycarbonate, acrylic resin, polysiloxanes, cellulose, and casein. , Rubber, derivatives of these polymer compounds, modified products, copolymers, mixtures and the like. The polymer film used as the supporting base material 51 may be a film that has been subjected to processing such as embossing, drilling, and porosity by foaming.

Woven fabrics, knitted fabrics, and non-woven fabrics are composed of natural fibers or chemical fibers. As the natural fiber, cotton, linen, pulp, hair, silk and the like can be used. As the chemical fiber, a fiber made of polyester, polyolefin, cupra, rayon, lyocell, acetate, diacetate, nylon, aramid, acrylic or the like can be used. Further, the support base material 51 may be composed of a fiber material in which natural fibers and chemical fibers are mixed. The supporting base material 51 made of such a fiber material may be subjected to processing such as embossing, drilling, foaming, or the like to make the fiber porous.

When the support base material 51 is made of a fiber material, the basis weight of the support base material 51 ^{is preferably 3 g / m 2} or more and 200 g / m ² or less, and more preferably 10 g / m ² or more and 100 g / m ² or less. preferable. When the basis weight of the support base material 51 is equal to or higher than the above lower limit value, the support base material 51 has a rigidity sufficient to prevent deformation such as twisting due to static electricity or air flow, so that the thin film 10 can be easily handled. .. Further, if the basis weight of the support base material 51 is not more than the above upper limit value, the fibers are not excessively clogged in the support base material 51. When the method is used, the liquid absorption of the support base material 51 proceeds smoothly, and the transfer can be preferably performed.

Further, the transfer sheet 50 may be provided with a protective layer that covers the first surface 11F of the thin film 10. By providing the protective layer, the thin film 10 is protected during storage of the thin film 10. As the protective layer, the above-mentioned various base materials exemplified as the support base material 51 can be used. The materials of the protective layer and the supporting base material 51 may be the same or different.

The outer shapes of the thin film 10 and the transfer sheet 50 in a plan view are not particularly limited. The outer shape of the thin film 10 and the transfer sheet 50 is, for example, a polygonal shape such as a rectangle, a circular shape, an elliptical shape, or a shape surrounded by straight lines or curves other than these. In a plan view, the shapes of the thin film 10 and the support base material 51 may be the same, and the support base material 51 may be larger than the thin film 10.

The transfer sheet 50 may be formed by transferring the thin film 10 formed on the base material for film formation onto the support base material 51, or the thin film 10 may be formed on the support base material 51. It may be formed by being done. As a method for transferring the thin film 10 from the base material for film formation to the supporting base material 51, a known transfer method such as a method using peeling by suction or a method using a sacrificial film may be used.

When using the transfer sheet 50, first, the transfer sheet 50 is arranged on the adherend so that the adherend and the first surface 11F of the thin film 10 are in contact with each other. Then, the supporting base material 51 is peeled off from the thin film 10. As a result, the thin film 10 is transferred to the adherend.

A liquid material such as water or lotion is supplied onto the surface of the adherend before the transfer sheet 50 is attached and the support base material 51 after the transfer sheet 50 is attached, and the liquid material permeates the transfer sheet 50. By doing so, the peeling of the support base material 51 and the thin film 10 may be promoted.

Since the thin film 10 of the present embodiment contains at least one of a fragrance component and an antibacterial component, the effect of obtaining the fragrance caused by the fragrance component and the effect of using the thin film 10 by attaching it to the adherend can be obtained. The antibacterial component has the effect of suppressing the generation of odor from the adherend. Since the fragrance component and the antibacterial component are retained in the thin film 10, the duration of the effect of the fragrance component and the antibacterial component can be obtained longer than that of the conventional liquid product for fragrance and deodorization.

The use of the adherend and the thin film 10 is not particularly limited. In the conventional liquid product, it was difficult to keep the component on the skin for a long time due to the generation of sweat, rubbing against clothes, etc. as described above, whereas the thin film 10 retains the functional component. It is possible to stick it on the skin for a long time in this state. Therefore, when the adherend is skin, the effect of prolonging the duration of the effect is particularly high as compared with the conventional liquid product.

[Transfer sheet container]
FIG. 10 shows an container in which the transfer sheet 50 is housed. The transfer sheet accommodating body 60 includes a transfer sheet 50 having a protective layer and a packaging body 61 accommodating the transfer sheet 50.

In order to prevent the functional components of the thin film 10 from diffusing to the outside before the transfer sheet 50 is used, the package 61 is preferably configured so as to be hermetically sealed.
The package 61 has, for example, a bag shape formed of a polymer film. As the polymer film, for example, a film composed of a single layer or a plurality of layers made of polyolefin, polyester, polyacrylonitrile, nylon or the like is used. Further, in the package 61, a gas barrier layer made of at least one of an organic substance and an inorganic substance may be laminated on the polymer film. By providing the gas barrier layer, it is possible to prevent the functional components of the thin film 10 from volatilizing. Further, as the material of the package 61, it is preferable to use a material that does not easily adsorb functional components.

[Example]
The thin film and transfer sheet described above will be described with reference to specific examples and comparative examples.

<Manufacturing method of thin film and transfer sheet>
A mixed solvent was prepared by mixing water and 2-propanol in a mass ratio of water: 2-propanol = 1: 2, and polyvinyl alcohol (manufactured by Kuraray Co., Ltd.) was added to the mixed solvent to make the solid content in the solution 5%. It was dissolved so as to become. Then, vanillin as a fragrance component was added to the polyvinyl alcohol solution and mixed to generate a coating liquid for forming a retention layer.

The above coating liquid was applied to a PET sheet, which is a base material for film formation, using a wire bar to form a coating film. A retaining layer was formed by heating the coating film in an oven to dry and solidify it. The heating temperature at the time of drying the coating film was 100 ° C., and the heating time was 2 minutes.

Next, poly-DL-lactic acid (manufactured by Musashino Chemical Laboratory Co., Ltd.) was dissolved in ethyl acetate so that the solid content in the solution was 10%, thereby forming a coating liquid for forming a diffusion inhibitory layer. did. The weight average molecular weight of the poly-DL-lactic acid used is 100,000.

The coating liquid for forming the diffusion suppression layer was applied onto the holding layer on the film-forming substrate using a wire bar to form a coating film. A diffusion inhibitory layer was formed by heating the coating film in an oven to dry and solidify it. The heating temperature at the time of drying the coating film was 90 ° C., and the heating time was 2 minutes.

As described above, a thin film having a holding layer and a diffusion suppressing layer was formed on the film-forming substrate. The thin film corresponds to the thin film of the second form.
Next, the supporting base material is superposed on the thin film on the film forming base material, and the laminate of the film forming base material, the thin film, and the supporting base material is pressed by a rubber roller from the side where the film forming base material is located. While doing so, the film-forming substrate was peeled off. As the supporting base material, a non-woven fabric composed of pulp-based fibers was used. The basis weight of the supporting base material is 35 g / m ² . From the above, a transfer sheet was formed.

In the above manufacturing method, by changing the amount of the fragrance component added to the coating liquid for forming the holding layer, the film forming thickness of the holding layer, and the film forming thickness of the diffusion suppressing layer, the thin film per unit area can be obtained. The thin films and transfer sheets of Examples 1 to 4 and Comparative Examples 1 to 3 in which the mass, the mass ratio of the fragrance component to the entire thin film, and the occlusion rate were different from each other were formed. The blockage rate can be controlled by the thickness of the holding layer and the diffusion suppression layer, and the larger the total thickness of the thin film and the larger the proportion of the polymer material in the thin film, the larger the blockage rate.

<Evaluation method>
(Aroma evaluation)
Five samples were prepared for each of Examples 1 to 4 and Comparative Examples 1 to 3. 500 μl of water was supplied to human skin as an adherend, and the supplied water was lightly stretched with a finger. The sample transfer sheet was then placed on the skin so that the thin film was in contact with the skin. Then, the sample was pressed with a finger from above the supporting base material for 3 seconds. Then, the supporting base material was peeled off from the end of the sample with a finger. As a result, the thin film was attached to the skin.

It was determined whether the aroma could be perceived from a position 10 cm away from the thin film in the direction orthogonal to the surface of the thin film on the skin. Judgment was made for each of 1 hour and 6 hours after the thin film was attached. For each of 1 hour and 6 hours, if the aroma can be perceived for all 5 samples, "○", and if the aroma can be perceived for 3 or 4 samples, "△", the aroma. The case where the number of samples that could perceive was 2 or less was defined as "x".

(Transcribability)
Five samples were prepared for each of Examples 1 to 4 and Comparative Examples 1 to 3, and a thin film was attached to the skin in the same manner as in the aroma evaluation. One hour after the thin film was applied, the thin film on the skin was visually observed to determine whether the thin film was chipped, torn, wrinkled, or twisted. "○" when all five samples are not deformed, "△" when three or four samples are not deformed, and two or less samples without deformation. It was set as "x".

(A feeling of sticking)
Five samples were prepared for each of Examples 1 to 4 and Comparative Examples 1 to 3, and a thin film was attached to the skin in the same manner as in the aroma evaluation. One hour after the thin film was attached, it was determined whether or not the thin film had a feeling of strangeness such as stuffiness or tension at the place where the thin film was attached. If there is no discomfort in all five samples, "○", if there is no discomfort in three or four samples, "△", and if there are two or less samples without discomfort. It was set as "x".

<Evaluation result>
Table 1 shows the mass of the thin film per unit area, the mass ratio of the fragrance component to the entire thin film, and the blockage rate for each Example and each Comparative Example, and each of the aroma evaluation, transferability, and sticking feeling is shown. The evaluation result and the comprehensive evaluation are shown. The overall evaluation is "○" when all evaluations are "○", "△" when each evaluation does not include "×" and contains "△", and when each evaluation contains "×". Was set to "x".

As shown in Table 1, in Examples 1 to 4 and Comparative Examples 1 and 2 containing the fragrance component, the fragrance was well perceived at least after 1 hour of application of the thin film. Therefore, it was shown that the thin film contains a fragrance component to impart a function of emitting a fragrance to the thin film.

On the other hand, in ^{Comparative Example 1 in which the mass per unit area exceeds 5.0 g / m 2} , the blockage rate exceeds 80% due to the thickness. Therefore, the fragrance component located in the vicinity of the adherend in the holding layer is not diffused to the outside of the thin film, and the fragrance is hardly perceived after 6 hours from the application of the thin film. Further, in Comparative Example 1, many wrinkles were confirmed on the thin film on the skin, and the evaluation of transferability was poor. It is considered that this is because the thickness of the thin film is large and the adhesion between the thin film and the skin is low. Further, in Comparative Example 1, due to the high blockage rate, a feeling of strangeness such as stuffiness due to the sticking of the thin film was likely to occur, and the evaluation of the sticking feeling was also poor.

Further, in Comparative Example 2 in which the mass per unit area ^{is less than 0.01 g / m 2} , the blockage rate is smaller than 5% due to its thinness, and the fragrance component held in the thin film. Since the total amount of the thin film is small, it is difficult to perceive the fragrance after 6 hours from the application of the thin film. Further, in Comparative Example 2, since the strength of the thin film is low, tearing or the like occurs and the evaluation of the transferability of the thin film is also deteriorated.

On the other hand, in Examples 1 to 4 in which the mass per unit area is 0.01 g / m ² or more and 5.0 g / m ² or less and the blockage rate is 5% or more and 60% or less, the thin film is attached. Perception of aroma was possible in more than half of the samples even after 6 hours, and the evaluation of transferability and sticking feeling was also good in more than half of the samples. Therefore, it was shown that the thin film of the example has good sustainability of the effect of the fragrance component and also has good practicality as a thin film to be attached to the adherend.

As described above, according to the thin film, the transfer sheet, and the transfer sheet container, the effects listed below can be obtained as described in the embodiments and examples.
(1) The holding layer provided in the thin film 10 holds at least one of a fragrance component and an antibacterial component as a functional component. According to such a configuration, when the holding layer holds the fragrance component, the thin film 10 emits a fragrance. Further, when the retaining layer retains the antibacterial component, the growth of bacteria is suppressed in the adherend to which the thin film 10 is attached, so that the generation of odor caused by the bacteria is suppressed. Therefore, a thin film having a function related to odor is realized, and the thin film 10 can cope with diversification of tastes.

Further, since the holding layer retains the functional component, diffusion of the functional component due to volatilization or the like is suppressed as compared with the case where the functional component is contained in the liquid medium. Therefore, the duration of the odor-related effect of the functional ingredient can be extended as compared with the conventional liquid products for fragrance and deodorization.

(2) The ratio of the mass of the functional component held by the holding layer to the mass of the entire thin film 10 is 50 ppm or more and 30% or less. Therefore, it is possible to prevent the effect of the functional component from being too weak or excessive, and the effect of the functional component can be obtained satisfactorily. In addition, the sustainability of the effect of the functional component can be obtained well.

(3) When the blockage rate of the thin film 10 is 5% or more and 60% or less, the diffusion of the functional component to the outside of the thin film 10 occurs in a short time, and the diffusibility of the functional component becomes extremely low. This is suppressed, and the diffusion of the functional component to the outside proceeds at a suitable speed. Further, when the adherend is a living body, it is possible to suppress the occurrence of discomfort such as stuffiness at the place where the thin film 10 is attached.

(4) If the thin film has a diffusion suppressing layer, the sustained release property of the functional component is enhanced. Further, if the holding layer is sandwiched between two diffusion suppressing layers, the sustained release property of the functional component is enhanced, and when the adherend is a living body, the irritation given by the functional component to the living body can be suppressed. it can.

(5) The thin film 10 has an uneven structure 40 on the surface of the thin film 10, or the thin film 10 is formed with through holes 41 penetrating at least one of the layers included in the thin film 10. If there is, the diffusion of the functional component to the outside is promoted, so that the sustained release property of the functional component can be adjusted. Further, if the holding layer contains the capsule 42 containing the functional component or the thin film contains the diffusion inhibitor, the diffusion of the functional component to the outside can be suppressed. The sustained release of functional ingredients can be adjusted.

(6) If the thin film 10 has a structure in which the holding layer and the diffusion suppressing layer contain a biocompatible material, the thin film has a structure suitable for sticking to a living body. In particular, in order to enhance safety to the living body, it is preferable that the layer containing the first surface 11F contains a biocompatible material.

(7) In the transfer sheet 50, since the thin film 10 is supported by the supporting base material 51, deformation of the thin film 10 is suppressed and the thin film 10 is easy to handle.

(8) In the transfer sheet container 60, since the transfer sheet 50 is housed in the package 61, diffusion of functional components before use of the transfer sheet 50 is suppressed.

10, 10A, 10B, 10C, 10D, 10E, 10F, 10G ... Thin film, 11F ... 1st surface, 11R ... 2nd surface, 20, 21, 22, 23, 24 ... Holding layer, 30, 31 ... Diffusion suppression Layer, 40 ... Concavo-convex structure, 41 ... Through hole, 42 ... Capsule, 43, 44 ... Diffusion inhibitor, 50 ... Transfer sheet, 51 ... Support substrate, 60 ... Transfer sheet container, 61 ... Package.

Claims (12)

1. It has a mass per unit area of 0.01 g / m ² or more and 5.0 g / m ^{2 or less,}
   A thin film having a retaining layer that retains at least one of a fragrance component and an antibacterial component as a functional component.
2. The thin film according to claim 1, wherein the ratio of the mass of the functional component held by the holding layer to the mass of the entire thin film is 50 ppm or more and 30% or less.
3. The blockage rate, which is the ratio of suppressing the amount of transpiration of water having a temperature equal to the human body temperature at the place where the thin film is placed to the amount of transpiration when the thin film is not placed, is 5% or more 60. The thin film according to claim 1 or 2, which is less than or equal to%.
4. The thin film according to any one of claims 1 to 3, wherein the thin film contains a biocompatible material.
5. The thin film according to any one of claims 1 to 4, further comprising a diffusion suppressing layer that suppresses the diffusion of the functional component.
6. It is provided with the two diffusion suppression layers.
   The thin film according to claim 5, wherein the holding layer is sandwiched between the two diffusion suppressing layers.
7. The thin film according to any one of claims 1 to 6, wherein the thin film has an uneven structure on the surface of the film.
8. The thin film according to any one of claims 1 to 7, wherein the thin film is formed with through holes penetrating at least one of the layers included in the thin film.
9. The thin film according to any one of claims 1 to 8, wherein the holding layer contains a capsule containing the functional ingredient.
10. The thin film according to any one of claims 1 to 9, wherein the thin film contains a diffusion inhibitor that suppresses the diffusion of the functional component.
11. The thin film according to any one of claims 1 to 10 and the thin film.
    A transfer sheet comprising a supporting base material that supports the thin film.
12. The transfer sheet according to claim 11 and
    A transfer sheet container including a package for accommodating the transfer sheet.

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