JP2002143208A - Light-shielding eye section cooling sheet, and light- shielding eye section cooling gel sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eye section cooling sheet and an eye section cooling gel sheet to which light-shielding property is imparted, for the purposes such as reducing fever at the time of an ophthalmic disease, recovering from an eye fatigue, a refreshment, increasing a concentration force/imagination force, and introducing sleep. SOLUTION: A light-shielding performance which is required to shut out a visual stimulation is obtained by applying a light-shielding treatment on a sheet-form substance having flexibility, a backing-supporting body layer 2 having flexibility, a hydrophilic water-containing adhesive layer 3, and a core material, or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a light-shielding eye cooling sheet and a light-shielding eye cooling gel sheet. More specifically, it covers the eye and its surroundings for the purpose of using it for heat relieving at the time of eye disease, and for restoring and refreshing eye fatigue, enhancing concentration and imagination, and introducing sleep. The present invention relates to a sticking-type light-blocking eye cooling sheet and a light-blocking eye cooling gel sheet having shapes suitable for shading and cooling.

[0002]

2. Description of the Related Art Conventionally, a mask body is provided with a storage portion, in which a coolant is fixed or detachably stored (Japanese Utility Model Application Laid-Open No. 61-34222, Japanese Utility Model Application Laid-Open No. 2-143923, Japanese Utility Model Application Laid-open No.
-58413, -64624, -126117, Japanese Utility Model Unexamined Publication No. 4-18510, -60222, Japanese Unexamined Patent Application Publication No. 4-14674.
7, Japanese Utility Model Application Hei 5-39528, Japanese Utility Model Application Hei 6-36625,-
66650, JP-A-7-222766, JP-A-10-2
11228, registered utility model publication 3049415), nonwoven fabric impregnated with a coolant, further added with a cooling agent and a humectant (Japanese Patent Publication No. 2876218), and provided with a cutout for cutting (Japanese Utility Model Publication No. 6815), and a wet mask for dry eye (Registered utility model publication 300214)
3) etc. were common. Recently, a cooling gel sheet is cut into a size of 50 mm × 160 mm or the like, and is commercially available as an eye cooling gel sheet.

[0003]

It is very effective to cool the eye and its surroundings at the time of eye disease fever, eye fatigue, need for refreshment, further enhancement of concentration and imagination, and introduction of sleep. It is well known that it is relevant. Also, when fatigue, eye disease fever, sleep, want to increase concentration, imagination, refresh, etc., humans instinctively shut out visual stimuli,
To rest, focus, or imagine, close your eyelids, darken your room, or cover your eyes with both hands. However, meeting this condition completely and sustainably can only be achieved by darkening the environment. However, outside the home, such as at work or while traveling, it is very difficult for individuals to freely obtain such an environment.
Thus, for these purposes, cooling and light blocking are both important factors in function. Furthermore, in terms of structure, simplicity and close adhesion at the time of use are required, and since it is a special part of the eye, it must be used hygienically and to minimize the chance of bacterial infection It is required to be used only once, that is, disposable. For the purpose of use, it is necessary to provide cooling and light-blocking properties at least in terms of function, simplicity, adhesion, disposability in terms of structure, and low cost in terms of effect vs. cost in terms of economy. it is conceivable that.

[0004] However, the conventional product containing a coolant has a bulky and complicated structure, and has a cooling function and a light-shielding function which is imperfect with respect to some of them.
It does not match the adhesiveness, simplicity, and disposability, and cannot be said to be low cost. In addition, an eye cooling sheet in which a nonwoven fabric is impregnated with a cooling agent or the like, or an eye cooling gel sheet in which a hydrophilic adhesive gel containing water is spread on a nonwoven fabric or the like has a cooling property, simplicity, adhesion, disposable property, and Although it has sufficient cost, etc., user's preference, appearance,
Although some gel bases are slightly colored for the purpose of differentiation, etc., they are not designed for light blocking and do not have the light blocking function and therefore do not conform to this. .

[0005] In view of such circumstances, an object of the present invention is to provide an eye cooling sheet and an eye cooling gel sheet with light blocking performance.

[0006]

Means for Solving the Problems First, (1) Establishment of a test method for light shielding property suitable for the product. (2) Determination of the light blocking rate (%) required by the product. (3) The means for solution were examined in order.

(1) The test method of the light shielding property suitable for the product was examined based on Method A of the light-shielding test method of JIS L1055 curtain and compared with the result of the actual use test of the product. As a result, it was found that changing the following items correlated well with the actual use test. Therefore, only this point was changed, and the others were compliant with JIS standards, and this was used as the test method for the product. The adjusted illuminance is the normal 10,000 lx ± 5.
Use%. Modification point (a) The diameter of the hole at the center of the test piece support frame is 40 mm (JIS standard is 100 mm). This takes into account the commercial distribution shape of the product. A black vinyl tape (Nitto Denko No. 21, JIS C2336) is used twice for light shielding at the joint with the support frame. And / or a donut-shaped black metal plate having a diameter of 40 mm and 80 mm is used. When the test piece is smaller than 40 mm in diameter, the diameter of the hole at the center of the support frame is reduced and measured, and two standard test pieces indicating the vicinity of the measured value are selected before and after each point. Calculated by proportional distribution with the value shown in (B) The distance between the test piece and the light receiving section is 5 mm (JIS standard: 10
0 mm). This takes into account the situation when the product is actually used.

(2) Required light blocking ratio (%) Ages 19 to 3
The test was conducted by 5 healthy boys and 5 girls up to 8 years old.
Test method: An eye cooling sheet and an eye cooling gel sheet having a predetermined light blocking rate were attached, and the number of persons who felt visual stimulus was counted. From the above results, it is found that 99% is normal in indoor rooms, 99.8% in high-illumination entrance halls, and 9% in outdoor rooms.
It turned out that a cut-off rate of 9.9% was at least required. Therefore, when assuming a general use, that is, a place where the product is used for rest or the like, a cut-off rate of 99% required in a room of about 300 lx is considered to be the minimum. 99.8 (%) when including special applications
Further, a cutoff rate of 99.9 (%) is required. By the way,
The blocking rate (%) of the related products currently on the market according to the measurement method described herein is as follows. 1. Company A eye cooling sheet 31.0 2. Company B eye cooling gel sheet (colored) 46.5 3. Company C anti-inflammatory analgesic ship agent (colored) 75.8 4. 4. Cooling gel sheet for company D (colored) 69.0 Company E eye cooling sheet 49.1

(3) Means for Solving The Solution The light-shielding eye cooling sheet according to claim 1 is made of a flexible sheet-like material, which is previously impregnated with an amount of a coolant that leaches out during use. In the eye cooling sheet, which covers the eye and its surroundings and is suitable for shading and cooling the site, the blocking rate (%) of light of a preselected wavelength incident on the sheet after drying is 99% or more. And Claim 2
The light-blocking eye cooling gel sheet is a laminate of a peeling material layer, a hydrophilic water-containing pressure-sensitive adhesive layer and a peeling material layer in that order,
Or, a flexible backing support layer, a hydrophilic water-containing pressure-sensitive adhesive layer and a peeling material layer laminated in that order, covering the eye and its surroundings, and having a shape suitable for light shielding and cooling of the site. In the cooling gel sheet, the cutoff rate (%) of light of a preselected wavelength incident on the body of the eye cooling gel sheet excluding the peeling material layer is 99% or more.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The light-shielding eye cooling sheet according to the first aspect is obtained by providing a light-shielding property to a flexible sheet. This sheet-like material is a thin, flexible and medically acceptable one such as paper, cloth, nonwoven fabric, thin metallic sheets such as polymer fiber film / foam and aluminum foil. Frequently, it can be used in a single layer (in this case, those which cannot impregnate the coolant) or in a laminate. Also, cellulose, pulp,
It also includes the case where powders of paper, cotton, etc., fine pieces, sensuous pieces and the like are fixed in the layers, between the layers, and between the layers. In the above-mentioned lamination, it is not necessary to particularly bond the respective layers, and the method of bonding, the method such as heat fusion, and the portion such as the entire surface or a part thereof are not particularly limited. The light-shielding treatment is performed on the single layer or on a part or all of the layers of the laminated sheet, and on one or both sides, part or all of the layer. Dispersion of pigments or light-shielding substances by dyeing, infiltration, fusion, adhesion, etc., or coating of metallic or non-metallic light-shielding substances or pigments such as aluminum by vapor deposition, spraying, etc. In addition to providing light-shielding properties by a method such as laminating as a thin film, a method of fixing a powder of a light-shielding substance in a layer, a layer surface, or between layers is also included. The shape can be an appropriate shape such as a rectangle and one having rounded corners, a portion corresponding to a nose streak with slits from both ends, an eye mask type, a V-shape, and the like. As the coolant component, there are alcohol, menthol, purified water, and the like, and various flavors and other additives are used.

In the light-shielding eye cooling gel sheet of the second aspect, when there is no flexible backing support layer,
The hydrophilic water-containing pressure-sensitive adhesive layer is provided with a light-shielding property to one or both of the flexible backing support layer and the hydrophilic water-containing pressure-sensitive adhesive layer, if any. The flexible backing support layer is the same as that described for the sheet-like material in the light-shielding eye cooling sheet according to claim 1, but it is necessary to always adhere at least a part by any method when laminating. There is a difference in that there are certain points, the material used is not limited even in the case of a single layer, and there is a case where no light-shielding treatment is performed. Further, polyacrylic acid and salts, C
MC and salts, synthetic and semi-synthetic adhesives such as polyvinyl alcohol, gelatin, natural adhesives such as Na alginate,
There are inorganic fillers such as kaolin, humectants such as glycerin, cooling agents such as alcohol and purified water, and other various cosmetic ingredients such as menthol and fragrances and additives. Further, this layer is composed of one layer or two or more layers, and a core material may be added in the layer, the layer surface or between the layers. As core material, paper, cloth,
Sheets such as nonwoven fabrics and nets are used.
Next, when imparting light-shielding performance to the hydrophilic water-containing pressure-sensitive adhesive layer, the light-shielding treatment is performed on this single layer or on some or all of the layers, and on one or both surfaces of the layer, or on some or all of the layers. do. The treatment is performed by dispersing or dissolving a pigment or a light-shielding substance in a layer, a layer surface, or between layers. Light shielding treatment may be performed on the core material. In that case, it is the same as the light-shielding process for the sheet-like material in the light-shielding eye cooling sheet of the first aspect. The stripping material constituting the stripping material layer is a synthetic film, a stripping paper subjected to a release treatment, or the like. The shape and the like are the same as those described in the light shielding eye cooling sheet of the first aspect.

[0012]

Example 1 (light-shielding eye cooling sheet) (FIG. 1) As a flexible sheet-like material, black PET / nylon nonwoven fabric (carbon black kneading treatment) (90 g / m ² ) and white cotton nonwoven fabric ( 40 g / m ² ),
This was cut into a rectangle of 55 mm × 160 mm, and impregnated with a coolant 3.5 times the sheet weight. The coolant composition is 0.2% paraben, 2% alcohol, 96.7% purified water,
Perfume and others are 1.1%. Example 2 (light-blocking eye cooling gel sheet) (FIG. 2) As a flexible backing support layer, a black PET / nylon nonwoven fabric (carbon black kneading treatment) (90)
g / m ² ), 800 g of an adhesive having the following composition was coated per 1 m ² , and a PP film was laminated thereon as a peeling material layer, and then cut into a rectangle of 55 mm × 160 mm. Adhesive composition (in 100 g) Kaolin 3 g Na polyacrylate 5 g CMC-Na 5 g PVA 0.5 g Glycerin 25 g Polyacrylic acid 3 g Tartaric acid 0.3 g Aluminum hydroxide 0.3 g Menthol 50 mg Blue No. 1 aluminum lake 1.5 mg Purified water Remaining amount

[0013] Light blocking test When Example 1.2 was tested by the method described in the present specification, the blocking ratio (%) was 99.5% and 99.5%, respectively.
9%.

[0014]

According to the present invention, an environment free of visual stimuli can be obtained simply and continuously while the cooling effect is maintained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment.

FIG. 2 is a sectional view of a second embodiment.

[Explanation of symbols]

1. Flexible sheet 1a. Black PET / Nylon non-woven fabric (90 g / m ² ) 1b. 1. White cotton nonwoven fabric (40 g / m ² ) 2. Flexible backing support layer 3. hydrophilic water-containing pressure-sensitive adhesive layer Stripping material layer

Claims (2)

[Claims] 1. A sheet-like material having flexibility, which has been impregnated with a cooling agent in an amount leached at the time of use.
In the eye cooling sheet, which covers the eye and its surroundings and is suitable for shading and cooling the site, the blocking rate (%) of light of a preselected wavelength incident on the sheet after drying is 99% or more. A light-shielding eye cooling sheet, characterized in that: 2. A laminate comprising a peeling material layer, a hydrophilic water-containing pressure-sensitive adhesive layer and a peeling material layer in that order, or a flexible backing support layer, a hydrophilic water-containing pressure-sensitive adhesive layer and a peeling material layer. Are laminated in that order, cover the eye and its periphery, and in the eye cooling gel sheet of a shape suitable for shading and cooling of the part, the eye cooling gel sheet excluding the peeling material layer is selected beforehand to enter the main body of the eye cooling gel sheet. The cutoff rate (%) of the light of the different wavelength is 99.
% Or less, a light-blocking ophthalmic cooling gel sheet.