JPS63280010A - Plaster for preventing armpit odor - Google Patents

Abstract

PURPOSE:To obtain the titled plaster easily applicable to human body and effective in continuously preventing armpit odor, by applying a tacky adhesive layer containing cyclodextrins to at least one surface of a substrate consisting of a specific nonwoven cloth composed mainly of polyurethane fiber. CONSTITUTION:The objective plaster for preventing armpit odor is composed of a substrate having a tacky adhesive layer on at least one surface of the substrate, wherein said substrate is composed of a nonwoven cloth having an elongation of >=100%, preferably >=150% and composed mainly of polyurethane fiber and said tacky adhesive layer contains >=3wt.%, preferably >=5wt.% of cyclodextrin and/or its derivative. Armpit odor can be eliminated continuously over a long period by applying the plaster to the armpit of human body. The plaster is resistant to peeling off and is applicable without causing disagreeable feeling or paint to the skin nor causing stuffing of the skin because the substrate is stretchable according to the stretching of the skin and has moisture permeability. Furthermore, the plaster can be easily applied to and peeled off from the skin as necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a patch for preventing armpit odor that can be easily applied to the human body and that can continuously prevent armpit odor.

(Conventional technology) How to remove odors from parts of the human body.

In addition to bathing and cleaning, there is also masking and neutralization of odors using fragrances. Masking is the process of adding depth to the odor to be removed that is relatively pleasant to the human sense of smell, thereby making the odor less noticeable. Odor neutralization refers to a certain odor.

The idea is to add odors from other species and weaken their own odors.

Such fragrances include 9 e.g. vanilla, jasmine, Il.
There are scents etc. However, these odor removal methods do not fundamentally remove the source of the odor, and the odor will occur again after a certain period of time.

Although there is a method of reacting odorous substances with certain substances to change them into odorless or weak odor substances, this method does not eliminate odors for a long time, especially when it causes discomfort to others such as armpit odor. For odors that provide odors, sustained odor removal (8-10 hours or more) is desired.

(Problems to be Solved by the Invention) The present invention solves the above conventional problems, and its purpose is to provide a patch for preventing armpit odor that can continuously remove armpit odor. It is about providing. Another object of the present invention is to provide a patch for preventing armpit odor that has elasticity according to the bending and stretching of the skin. Still another object of the present invention is to provide a patch for preventing armpit odor that can be easily applied.A further object of the present invention is to provide a patch for preventing armpit odor that does not cause stuffiness. It is in.

(Means for Solving the Problems) The present invention replaces conventional methods of removing armpit odor, such as masking and neutralizing odor using fragrances.

By incorporating odor components of armpit odor into cyclodextrin, armpit odor can be continuously removed over a long period of time. It was completed based on the inventor's knowledge.

The patch for preventing armpit odor of the present invention comprises a base material and a base material.

A patch having an adhesive layer on at least one side of the base material, wherein the base material is mainly composed of polyurethane fibers and
It is made of a nonwoven fabric having an elongation of 0% or more, and the adhesive layer contains cyclodextrin and/or a derivative thereof, thereby achieving the above object.

Cyclodextrin has 6 to 8 D-glucose α
- It is an oligosaccharide with 1,4 glucosidic bonds. Cyclodextrin is a donut-shaped molecule with a cavity in the center of the cyclic structure. The inside of the ring is hydrophobic and incorporates a compound having a lipophilic group to form an clathrate.

Taking advantage of these properties of cyclodextrin.

We thought of removing odor by including the odor components of armpit odor.

Cyclodextrin and the cyclodextrin manufacturing process are
In the adhesive layer, 3% by weight or more, preferably 5% by weight
It is contained within the above range. If it is less than 3% by weight, armpit odor will not be effectively removed. Cyclodextrin has α, β,
There are three types of γ-cyclodextrin compounds. The cyclodextrin used in the present invention may be any of the above compounds or may be a mixture thereof. The mixture includes a mixture before being isolated into each type of cyclodextrin in the cyclodextrin manufacturing process. What is the mixing ratio of this mixture?

α:β:γ - about fi:3:1 (weight ratio), but mixtures of each type of cyclodextrin in any ratio can also be used. Examples of cyclodextrin derivatives include compounds in which one to several maltose molecules are introduced into a cyclodextrin skeleton.

The extensibility of the nonwoven fabric used for the base material is in the range of 100% or more, preferably 150% or more. Stretchability is 100
%, the obtained patch will not have the elasticity appropriate to the affected area (here, extensibility is defined as 1 elongation within the range where it can be elastically expanded or contracted). The elastically stretchable range means the range in which a material can completely recover to its original length after being stretched and the external force is removed.However, the recovery time varies depending on the material. Therefore, in the present invention, extensibility is defined by the following method.

A test piece with a width of 20 squares and a length of 80 m or more is prepared.

Draw two marked lines with a width of 50 tm in the center of this test piece.

The test piece was placed at two points 80m apart as fulcrums, each with 30
Stretch in the opposite direction at a speed of C11/min, stop stretching at a predetermined length, and repeat 9 times.

Return the specimen at a rate of 30a1/min. Stop when the test piece returns to its initial length, and continue for 1 time without applying any external force.
Leave for 0 minutes. After standing, measure the length of the marked line of the test piece. Repeat the test by changing the stretching length, and find the maximum stretching length for which the elongation rate of the marked line is within 5%. This maximum stretched length is compared to the length of the original specimen to determine the elongation rate of the specimen, which is defined as the extensibility of the material.

An ordinary pressure-sensitive adhesive is used as the adhesive contained in the adhesive layer. This pressure-sensitive adhesive is a composition that can be adhered and re-peeled multiple times. The Tg of this composition is in the range of -110 to 10°C. Preferred adhesives include, for example, (meth)acrylate (co)polymer systems and.

Natural rubber, synthetic rubber (IR, IIR, SBR, SIS block copolymers, SBS block copolymers and mixtures thereof), polyvinyl ether compositions.

There are systems whose main components are water-soluble polymers, etc. These adhesives contain a tackifier (such as a softener) as necessary. If a water-soluble polymer is added to this adhesive, moisture such as sweat will be absorbed, making it possible to adhere to damp surfaces. Examples of water-soluble polymers include guar gum, gum tragacanth, gum karaya, pectin, polyvinylpyrrolidone, polyvinyl alcohol, sodium polyacrylate, and sodium carboxymethylcellulonis.

There is carboxymethylated starch.

Before using the patch for preventing armpit odor of the present invention, a removable protective paper or film is usually laminated on the surface of the adhesive layer to prevent the cyclodextrin from including other odor components in the atmosphere. Ru.

(Example) Examples of the present invention will be described below.

Example 1: Preparation of adhesive solution 2-ethylhexyl acrylate, isobutyl methacrylate and methacrylic acid were dissolved in ethyl acetate and solution polymerized to prepare an acrylic ester copolymer having the following composition. This acrylic ester-based copolymer was provided as an adhesive solution in ethyl acetate at a concentration of 30% by weight.

2-Ethylhexyl acrylate 80% by weight Isobutyl methacrylate 17% by weight Methacrylic acid 3% by weight This adhesive solution 100
The cyclodextrin mixture was added in an amount of 3 parts by weight based on the weight part. In this cyclodextrin mixture, the mixing ratio of each type of cyclodextrin is α:β:γ=
The ratio is approximately 6=3:1 (weight ratio).

(2) As a base material for the preparation of the patch, the average diameter of the fibers is approximately 150μ, and the average length is approximately 2.
A nonwoven fabric made of 5 Tsuru polyester polyurethane fibers was used. The basis weight of this nonwoven fabric was approximately 60 g/ba, and its elongation rate was approximately 600%.

Isoprene-methyl methacrylate (7:3
A graft polymer consisting of (weight ratio) was coated to a layer thickness of about 8g1rd, and anchor treatment was performed. Apply the adhesive solution obtained in section (1) to this anchor treatment layer.

Coating was performed by a transfer coating method using silicone release paper to form an adhesive R layer with a thickness of approximately 60 μs. The obtained patch is cut into a size of, for example, 1QaaX5cm, and used. In use, the silicone release paper is peeled off. When this patch was applied to the axillary region of a human body,
Underarm odor was removed for over 30 hours. Furthermore, this patch expanded and contracted in accordance with the bending and stretching of the skin, and did not peel off. There was no stuffiness caused by the patch.

Back 1 Main (1) Preparation of adhesive solution Synthetic polyisoprene rubber (IR, IR-2200, manufactured by Japan Synthetic Rubber Co., Ltd.) 90 parts by weight Styrene-isoprene-styrene block copolymer (S
IS, E-2359, manufactured by Sumitomo Chemical Co., Ltd.) 10 parts by weight Poly-β-pinene resin (softening point 110°C) 70 parts by weight Squalane 25 parts by weight 2.6
- Di(t-butyl)cresol 1 part by weight 1 Glycyrrhetinn 0.5 part by weight The above formulations were mixed and then dissolved in cyclohexane to prepare an 18% adhesive solution. To 100 parts by weight of this adhesive solution, 2.5 parts by weight of the same cyclodextrin mixture as in Example 1 was added.

(2) Preparation of patch The same base material as in Example 1 was used. on this base material.

The adhesive solution obtained in section (1) was applied in the same manner as in Example 1 to form an adhesive layer with a thickness of approximately 70 μm. The obtained patch is cut into a size of 9, for example, 1Qcm x 5am, and is ready for use. when in use.

The silicone release paper is peeled off. This patch.

When applied to the armpits of the human body, armpit odor was removed for over 30 hours. Moreover, this patch
It expanded and contracted according to the bending and stretching of the skin, and did not peel off.

There was no stuffiness caused by the patch.

(Effect of the invention) The patch for preventing armpit odor of the present invention is as follows.

Because the adhesive layer contains cyclodextrin.

If this is applied to the armpit area of the human body, armpit odor will be removed continuously. For example, my armpit odor is 0.

It can be removed for long periods of time, such as 30 hours or more. Moreover, since the base material of this patch is made of stretchable polyurethane fibers, it expands and contracts according to the bending and stretching of the skin, does not peel off easily, and does not cause any discomfort or pain to the skin to which it is applied. The patch, which also does not cause stuffiness because the agent's base is permeable to moisture, is easy to apply and can be easily removed if necessary. As a result, according to the patch for preventing armpit odor of the present invention, armpit odor can be effectively removed.

that's all

Claims (1)

[Scope of Claims] 1. A patch having a base material and an adhesive layer on at least one side of the base material, wherein the base material is a nonwoven fabric mainly composed of polyurethane fibers and having elongation of 100% or more. A patch for preventing armpit odor, wherein the adhesive layer contains cyclodextrin and/or a derivative thereof. 2. The patch for preventing armpit odor according to claim 1, wherein the cyclodextrin and/or its derivative is contained in the adhesive layer in a proportion of 3% by weight or more.