WO2000030693A1

WO2000030693A1 - Dressing

Info

Publication number: WO2000030693A1
Application number: PCT/EP1999/007071
Authority: WO
Inventors: Gerold Tebbe
Original assignee: Deotexis Inc.
Priority date: 1998-11-23
Filing date: 1999-09-23
Publication date: 2000-06-02
Also published as: DE19853850A1; EP1133324A1

Abstract

The purpose of the present invention is to match exactly the colour of a dressing with the colour of the surrounding area where said dressing is applied. To this end, the outer face (14) of the dressing is treated so as to absorb a cosmetic preparation applied on the surrounding cutaneous area.

Description

band Aid

The invention relates to a plaster according to the preamble of claim 1 and a set consisting of at least one such plaster and a cosmetic cream.

Conventionally available plasters, as addressed in the preamble of claim 1, have a base layer which is roughly matched in color to a medium skin tone. As a result, there is always some contrast between the color of the patch and the skin of the user. While in some places, e.g. on the hand, usually accepted, plasters on other parts of the body, especially on the face, are unsightly. For this reason, attempts are often made to cover an inflamed area of skin directly with makeup, although this is undesirable for medical reasons.

The present invention is therefore intended to create a plaster whose color can be adapted exactly to the surrounding skin color or the surrounding make-up or is already adapted to this.

This object is achieved according to the invention by a plaster according to claim 1.

The patch according to claim 1 has a skin-like appearance due to its prepared outer surface. Make-up can be applied to the outer surface so that the color of the plaster no longer stands out from the surroundings. Advantageous developments of the invention are specified in the subclaims.

A surface accepting a cosmetic preparation can be easily obtained according to claim 2. The roughening can be done in practice by electrical discharge, etching or mechanically.

With the development of the invention according to claim 3, good adhesion of lipophilic or hydrophilic cosmetic preparations is achieved.

The development of the invention according to claim 4 is advantageous with regard to an appearance that also approximates the surface structure of the skin.

If the base layer of the plaster is formed according to claim 5, the base layer can be chosen to be particularly thin: A single-layer layer of microcapsules which have a diameter of a few μ to 100 μ, preferably approximately 10 to 20 μ, is for sufficient exposure over a day is sufficient. If the base layer is provided in a window of the adhesive layer, it can be ensured that the surface of the plaster that comes into contact with the skin runs through flush and that the base layer does not appear on the outside of the plaster.

Patches are often used to cover small wounds. The base layer in such common

Bandages are usually made of cotton. If you have a base layer made of microencapsulated active ingredients, you can use microencapsulated hygroscopic mineral substances for drying wounds, such as diatomaceous earth, aluminum oxide etc., as in the claim 6 specified. Alternatively or additionally, active pharmaceutical ingredients can be provided in micro-encapsulated form in the base layer, or skin care products such as care oil. This is also stated in claim 6.

The development of the invention according to claim 7 allows a good color adaptation to the environment, even if no make-up is used. The patches are provided in a large number of different colors, which can be achieved in a simple manner when using ink layers. In contrast, the number of available colors is limited in the case of conventional plasters with solid-colored base layers, and it means a great deal of effort to provide plasters in various closely graded color shades.

The development of the invention according to claim 8 is advantageous in terms of protecting the ink layer from mechanical damage.

A plaster according to claim 9 is characterized in that it adapts particularly well to the surface of curved skin sections. Base layers made of rubber also have special advantages for medical reasons. when treating blisters on the foot.

If layer thicknesses are used as indicated in claim 10, the plaster is not visually disturbing on the one hand, on the other hand it has sufficient strength. Such thin plasters can also be easily adapted to the geometry of the skin surface.

With the development of the invention according to claim 11 the result is that the plaster does not come off or peel off even under unfavorable conditions (for example staying in warm water or in the sun). The patch remains permanently attached to the surface of the skin and exfoliates with the top layer of skin when the skin renews itself.

A plaster as specified in claim 12 is particularly suitable for temporarily covering a surface portion of the skin or also for covering a plaster with a color adapted to the skin color, e.g. while bathing.

Even if you exactly match the color of the plaster, which is predetermined by a layer of printing ink, to a make-up color by providing plaster and make-up as a set (claim 13), you have an excellent color match between the plaster and the environment.

The development of the invention according to claim 14 allows a user to easily find the plaster size required for the respective application from a set. Pruning a patch is not necessary.

The invention is explained in more detail below on the basis of exemplary embodiments with reference to the drawing. In this show:

1 shows a section through a section of a medical plaster;

FIG. 2: a partial top view of a medical plaster according to FIG. 1; and

FIG. 3: a section through another plaster, that only serves to cover scars or the like.

The plaster shown in FIG. 1 has a base layer 10, the thickness of which is small (in practice 20 to 100 μm), and has an even thinner adhesive layer 12 on its underside

The top of the base layer 10 (the outside when the plaster is applied) is roughened, as indicated at 14. The roughened outer surface 14 of the plaster carries an adhesion-promoting coating 16. This gives the outside of the plaster hydrophilic properties (for use with a hydrophilic make-up) or lipophilic properties (for use with a lipophilic make-up). The adhesive coating 16 is sprayed thinly onto the base layer 10.

A window 18 is provided in the adhesive layer 12 and is filled with an active material 20. The exemplary embodiment under consideration is a single-layer layer made of microcapsules 22, in which an active ingredient is enclosed.

The microcapsules 22 have a wall 24 made of a material which is not stable against body heat and / or moisture, e.g. Gelatin. The active substance 26 is arranged in the interior of the wall 24.

If the patch is to perform the usual wound care function, the active ingredient 26 simply consists of a liquid-absorbing material, e.g. Diatomaceous earth, aluminum oxide or the like.

In addition, among the microcapsules 22 there may be which contain medicinal substances, eg oxygen-releasing compounds or other wound disinfectants. Other microcapsules that can be used in addition or on their own are those that contain active pharmaceutical ingredients. Initially, these can be pharmaceutical active ingredients for the skin, but they can also be other pharmaceutical active ingredients that are added to the body percutaneously.

As can be seen in particular from FIG. 2, the base layer 10 is provided with an embossing 28 which has undergone an embossing 28 corresponding to the surface structure of the skin.

The exemplary embodiment according to FIG. 3 shows a plaster which does not carry any active material (working layer), but only serves to cover permanent skin irregularities, e.g. Scar .

In this patch, an ink layer 30 is applied to the underside of the base layer 10, e.g. screen printed. The color of the printing ink or the appropriate multi-color printing can be used to inexpensively change the color of the printing ink layer in fine stages, thus providing plasters for a wide variety of skin types and a wide variety of make-up.

3, the adhesive layer 12 is applied to the underside of the printing ink layer 30. The printing ink layer 30 is thus protected from both sides.

The plastic films customary for skin plasters are suitable as the material for the base layer 10. While If the commercially available plasters also have solid-colored base layers, the color of a plaster according to the invention is adjusted as described above by designing the base layer on the top in such a way that it accepts a cosmetic preparation, or on the surface with one adapted to the color of a cosmetic preparation Ink layer provides. A plaster prepared only on the surface with a view to the good acceptance of a cosmetic product can often be used directly if the base layer 10 and the adhesive layer 12 are themselves made of transparent material, since the skin color shines through.

If one chooses a rubber material as the material for the base layer 10, more precisely a rubber film with a thickness of 20 to 100 μm, preferably 30 to 60 μm, the base layer adapts particularly well to curved sections of the skin without wrinkles, since the material can be easily stretched locally.

Plaster, as described above, can also be used as "over-plaster", i.e. put on a plaster of the same color as described, in order to e.g. Protect against moisture when bathing.

Suitable materials for the adhesive layer are the self-adhesive materials commonly used for plasters, which are constantly in a sticky state, so that the plasters can be removed easily.

Alternatively, you can also use adhesives that harden after the patch has been applied to the skin. In this way, a permanent secure attachment of the Patches are given to the skin, and the adhesive residues, which are often unpleasant in practice and which remain on the skin in particular after prolonged use of a patch, have been eliminated. The patch will come off after a while if the top layer of skin is rejected when the skin regenerates.

In practice, the plasters according to the invention are also provided in sets which contain punched-out individual plasters of different geometry and size.

Claims

claims

1. Plaster with a base layer (10), optionally with a working layer (20) arranged thereon and with an adhesive layer (12), characterized in that the outer surface of the base layer (12) remote from the adhesive layer (12) 10) is designed so that it accepts a cosmetic preparation.

2. Patch according to claim 1, characterized in that the outer surface (14) is rough.

3. Plaster according to claim 1 or 2, characterized in that the outer surface (14) has received a surface treatment or a surface coating (16) so that it is either lipophilic or hydrophilic.

4. Patch according to one of claims 1 to 3, characterized in that the outer surface (14)

Has embossing (28) with a skin pattern.

5. Patch with one of claims 1 to 4, characterized in that the working layer (20) has at least one microencapsulated (22) active ingredient (26).

6. Plaster according to claim 5, characterized in that the active ingredients (26) comprise one or more of the substances mentioned below: drying agents such as diatomaceous earth, aluminum oxide and the like, pharmaceutical substances such as pharmaceuticals which act on the skin, for example anti-inflammatory pharmaceuticals, pharmaceutical substances that are added to the body percutaneously and skin care products, such as care oils.

7. Patch according to one of claims 1 to 6, characterized in that the base layer (10)

Ink layer (30) carries.

8. Plaster according to claim 7, characterized in that the printing ink layer (30) lies between the base layer (10) made of transparent material and the adhesive layer (12).

9. Plaster according to one of claims 1 to 8, characterized in that the base layer (10) is made of rubber.

10. Patch according to one of claims 1 to 9, characterized in that the thickness of the base layer (10) is between 20 and 100 microns, preferably between 30 and 60 microns.

11. Plaster according to one of claims 1 to 11, characterized in that the adhesive layer (12) consists of an adhesive which hardens after the plaster has been applied to the skin.

12. Plaster according to one of claims 1 to 10, characterized in that the adhesive layer (12) is made of a constantly sticky material, so that the plaster is removable from the base, in particular from an underlying plaster, which is also according to one of the Claims 1 to 10 is formed.

13. Set consisting of at least one plaster after one of claims 8 to 12 and a colored cosmetic preparation, characterized in that the printing ink layer (30) and the cosmetic preparation have the same color.

14. Set consisting of at least one plaster according to one of claims 1 to 12, characterized in that it has a plurality of plasters punched out of a flat material of different sizes