Patch for skin and method of manufacturing the same

Abstract

To provide a patch for skin which can be attached on skin and satisfy a user with its aesthetic, and a method of manufacturing the patch.SOLUTION: A patch 1 for skin includes hydrocolloid in its material, and includes a lower surface adhesive layer 3 constituting an adhesive layer on skin, and an upper surface support layer 4 adhered on a front side of the lower surface adhesive layer 3 and constituting a support body supporting a drawing pattern. A surface of the upper surface support layer 4 may include a drawing pattern layer 5 and a surface protection layer 6.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a patch that is attached to the skin and a method for producing the same. [Background technology]

[0002] In recent years, patch-like preparations containing hydrocolloids have been applied to target areas of the skin to treat skin troubles such as wounds and inflammation. Hydrocolloids are materials in which hydrophilic polymer particles are dispersed in hydrophobic polymers. When this is molded into a patch and applied to the skin, the hydrophobic polymers adhere to the skin and exudates from the skin are absorbed by the hydrophilic polymers. This allows the skin surface to be kept moist while being isolated and protected from the external environment.

[0003] Prior art documents relating to this type of hydrocolloid preparation include, for example, Patent Documents 1 and 2 listed below. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-176646 A [Patent Document 2] JP 2023-34865 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, since the hydrocolloid preparations described above are used when skin trouble occurs, their use is basically not a pleasant experience for the user. Skin trouble itself is a negative event for the user, and the user usually wants the patch attached to the skin as a means of dealing with the trouble to be as inconspicuous as possible.

[0006] In view of the above circumstances, the present invention aims to provide a skin patch that can provide a user with aesthetic satisfaction when applied to the skin, and a method for manufacturing the same. [Means for solving the problem]

[0007] The present invention relates to a skin patch characterized by comprising a lower adhesive layer that contains a hydrocolloid as a material and forms an adhesive layer for application to the skin, and an upper support layer that is adhered to the surface of the lower adhesive layer and forms a support for a design.

[0008] The skin patch of the present invention may include a pattern layer that provides a pattern on the surface of the upper support layer.

[0009] The skin patch of the present invention may be provided with a surface protective layer on the outer side of the upper support layer.

[0010] In the skin patch of the present invention, the upper support layer may be made of synthetic paper made of polymeric resin and adhered to the lower adhesive layer with glue.

[0011] The present invention also relates to a method for manufacturing a skin patch, which is characterized by adhering an upper support layer that forms a support for a pattern to the front side of a lower adhesive layer that contains a hydrocolloid as a material and constitutes an adhesive layer for application to the skin.

[0012] In the method for producing a skin patch of the present invention, a design layer can be thermally transferred onto the surface of the upper support layer. Effect of the Invention

[0013] The skin patch and the manufacturing method thereof of the present invention can provide the excellent effect of providing the user with a sense of aesthetic satisfaction when applied to the skin. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing an example of the shape of a skin patch according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view showing the structure of one of the skin patches shown in FIG. 1. [Diagram 3] 1 is a flowchart illustrating an example of the steps of a method for manufacturing a skin patch according to the present invention. [Figure 4] 1 is a plan view showing a step in the manufacturing process of a skin patch. [Diagram 5] FIG. 2 is a plan view showing another step in the method of manufacturing a skin patch. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0016] Figures 1 and 2 show an example of the shape of a skin patch according to the present invention. Figure 1 shows the shape of the product when sold, in which a circular or heart-shaped skin patch 1 is attached to the surface of a separator 2 serving as a base sheet.

[0017] The skin patch 1 has a structure in which multiple layers are stacked as shown in Figure 2, and is mainly composed of a lower adhesive layer 3, an upper support layer 4, a pattern layer 5 and a surface protection layer 6, in that order from the bottom up.

[0018] The lower adhesive layer 3 constituting the back surface of the skin patch 1 is a layer that contains a hydrocolloid as a material to form an adhesive layer, and adheres to the skin by its adhesive force during use. Hydrocolloids are materials in which hydrophilic polymer particles are dispersed in hydrophobic polymers, and are widely used as covering agents for wounds, etc. There are many types of hydrocolloids with different polymer types, blends, structures, etc., but as long as they can be used appropriately on the skin, an appropriate hydrocolloid can be selected and used for the lower adhesive layer 3.

[0019] The upper support layer 4 is a layer that is adhered to the front side of the lower adhesive layer 3 to cover the upper surface of the lower adhesive layer 3 and constitutes a support that supports the pattern. In this embodiment, it supports the printing ink and pattern layer 5 as described later. An adhesive (not shown) is applied to the back surface of the upper support layer 4, and it adheres to the surface of the lower adhesive layer 3 underneath. As the material for the upper support layer 4, any suitable substance that can adhere to the lower adhesive layer 3 and can suitably support the ink or pattern layer 5 can be adopted, and for example, paper is suitable. More specifically, for example, synthetic paper such as Yupo Paper (registered trademark) formed from a polymer resin, or general neutral paper or high-quality paper, etc. can be used. In addition, for example, glue can be used as the adhesive between the lower adhesive layer 3 and the upper support layer 4, which are made of hydrocolloid. In particular, when Yupo paper is used as the material for the upper support layer 4, products called Toishi glue or rough surface glue, or even a strong adhesive glue called Super Toishi glue are suitable as the adhesive. Yupo paper is sold with this Ultra Toishi glue applied to the backside, so the combination of Yupo paper and Ultra Toishi glue is a simple and suitable adhesive for the upper support layer 4 and the lower adhesive layer 3.

[0020] The design layer 5 is a layer that imparts a design, such as a color, figure, pattern, or some kind of motif, to the surface of the upper support layer 4, and is adhered to the surface of the upper support layer 4 by using, for example, a thermal transfer foil, as described below. Various products are commercially available as thermal transfer foils for printing, and these can be used to transfer various materials, such as a metal layer or a hologram film, to the upper support layer 4 as the design layer 5.

[0021] The surface protective layer 6 is provided on the front side of the upper support layer 4, and protects the upper support layer 4 and the pattern layer 5 supported on its surface. An example of a suitable material for the surface protective layer 6 is OPP film, but any other suitable material may be used as the surface protective layer 6 as long as it has a transparency that allows the pattern underneath to be seen, and is capable of adhering to the upper support layer 4 and the pattern layer 5 to protect their surfaces.

[0022] 1, the dimensions of the skin patch 1 are, for example, 8 mm or 5 mm in diameter for a circular skin patch 1, and 8 mm x 9 mm for a heart-shaped skin patch 1. As will be described later, from the viewpoint of skin decoration, it is preferable that the dimensions of the skin patch 1 have an upper limit of the maximum diameter of at most 20 mm, more preferably about 10 mm.

[0023] Next, an example of a method for producing the above-mentioned skin patch 1 will be described with reference to the flow chart of FIG.

[0024] First, an eye mark is printed on the surface of the material of the upper support layer 4, such as Yupo paper (step S1). The eye mark is a figure printed on the material, such as paper, as a mark for alignment in a transfer machine or other device when performing thermal transfer or punching in a later process. For example, as shown by the symbol "E" in Fig. 4, it is configured as a pattern of black squares printed at equal intervals on the edge of the paper. In the example shown in Figs. 1 and 2, the pattern of the skin patch 1 is not printed on the upper support layer 4, but is formed by the pattern layer 5 transferred to the upper support layer 4. In this case, only the edge part not used for the skin patch 1 is printed on the material sheet, such as Yupo paper, which is the material of the upper support layer 4.

[0025] Next, the design layer 5 is transferred onto the surface of the upper support layer 4 on which the eye mark is printed (step S2). For example, a sheet (thermal transfer sheet) that is commercially available as a sheet for thermal transfer can be used for transferring the design layer 5. The thermal transfer sheet is, for example, a sheet in which a material layer having a coloring effect is arranged on the back side of a base sheet via a peeling layer, and an adhesive layer is further arranged on the back side. When this thermal transfer sheet is superimposed on the surface of the upper support layer 4 and pressure and heat are applied to the target part (in this embodiment, the part that will later become the skin patch 1) by a thermal transfer method called hot stamping, the adhesive layer is melted by the heat and the material layer is adhered to the surface of the upper support layer 4, while the base sheet is peeled off from the material layer by the peeling layer, and the material layer remains on the surface of the upper support layer 4, which is the transfer target. In this way, as shown in FIG. 5, the material layer is transferred as the design layer 5 together with the adhesive layer onto the surface of the upper support layer 4.

[0026] The other layer materials shown in FIG. 2 are attached to the upper support layer 4 to which the pattern layer 5 has been transferred (step S3). On the back side of the upper support layer 4, a base sheet 2 as a separator is placed, and on top of that, a hydrocolloid sheet as the material of the lower adhesive layer 3 is placed, and on the front side of the upper support layer 4, a surface protection layer 6 such as an OPP film is placed on top of the pattern layer 5, and these are attached together. As described above, Yupo paper with super-toishi paste applied to the back side can be used as the upper support layer 4. In this case, if the release sheet provided on the back side of the product is peeled off and the lower adhesive layer 3 is placed over it, the lower adhesive layer 3 and the upper support layer 4 are bonded to each other by the super-toishi paste. If a resin film such as an OPP film is used as the surface protection layer 6, the surface protection layer 6 is placed over the surface of the upper support layer 4 to which the pattern layer 5 has been transferred, and then heat-pressed (laminated), and the surface protection layer 6 is bonded to the surface of the upper support layer 4. The surface protection layer 6 can be adhered by using, for example, some kind of adhesive other than the lamination.

[0027] Finally, a punching process is performed to cut out the portion of the material in which the lower adhesive layer 3, upper support layer 4, and surface protective layer 6 are superimposed, where the pattern layer 5 is transferred to the upper support layer 4, from the other portions (step S4). The portion cut out in this way is the skin patch 1 shown in Figures 1 and 2. The material in the portion other than the skin patch 1 (the lower adhesive layer 3, upper support layer 4, and surface protective layer 6) is removed from the separator 2, and a product is completed in which circular and heart-shaped skin patches 1 are lined up on the surface of the separator 2 as shown in Figure 1.

[0028] The procedure described here is merely an example, and the order of each step can be changed. For example, it is possible to thermally transfer the design layer after adhering the lower adhesive layer 3 and the upper support layer 4. Depending on the form of the skin patch to be finally manufactured, the content of each step can be appropriately changed, or other steps can be added or some steps can be omitted.

[0029] The skin patches 1 manufactured by the above-mentioned method can be peeled off one by one from the base sheet (separator) 2 and applied to the skin of the face or the like via the lower adhesive layer 3. The lower adhesive layer 3, which contains a hydrocolloid as a material, has excellent adhesion to the skin and can remain attached to the skin for a long period of time, such as several hours to several days.

[0030] The pattern of the pattern layer 5 is displayed on the front side of the skin patch 1, and this functions as a decoration on the skin of the user. When a holographic foil is used as the material of the pattern layer 5, the pattern and luster of the holographic foil are cut out into the shape of the skin patch 1 and attached to the skin of the user. For example, materials such as metal and stone are sometimes used to decorate the skin of a person's face, such as in the form of facial piercing, and decorations having a similar effect can be easily used by attaching them to the surface of the skin. Unlike piercings, there is no need to pierce the skin, so it is safe and easy. In addition, as described above, when materials such as hydrocolloid, Yupo paper, holographic foil, and OPP sheet are used and printed or pressed on them to form the skin patch 1, it can be suitably manufactured using inexpensive materials, and is easy in terms of cost. In addition, the printing and pressing described above can be performed using conventional normal printing technology, and the manufacturing itself does not require a large cost. Furthermore, each skin patch 1 can be manufactured and sold as an inexpensive item, and may be disposed of after a few hours to a day of use.

[0031] In addition, the lower adhesive layer 3 that adheres to the skin is made of a hydrocolloid material that is commonly used for wounds, etc., so it can be attached to the skin appropriately and there is no need to worry about damaging the condition of the skin when applying it to the skin.

[0032] Conventional hydrocolloid preparations have been used to protect and treat skin troubles or to hide them so that they are not noticeable. The skin patch 1 of this embodiment imparts a new function of skin decoration to such hydrocolloid preparations. By adding the value of aesthetics to conventional hydrocolloid preparations, it is possible to provide users with a new sense of satisfaction when using hydrocolloid preparations on the skin. In other words, the negative experience of "dealing with skin troubles" is transformed into a positive experience of "skin decoration."

[0033] Here, from an aesthetic point of view, the shape and dimensions of the skin patch 1 are also important. As described above, the skin patch 1 has the function of adding decoration to the skin in an image similar to facial piercing, etc., but in this case, if the patch is, for example, a large square or a rectangular shape with arc-shaped sides on both ends, depending on the pattern applied to the surface, the image of a poultice or bandage that has been used on the skin in the past may be strong, and the above-mentioned aesthetic effect may not be fully exhibited. Therefore, as described above, the dimensions of the skin patch 1 should have an upper limit of the maximum diameter of 20 mm, more preferably about 10 mm, and the aspect ratio should have an upper limit of the ratio of the major axis to the minor axis of 2 times, more preferably 1.5 times.

[0034] The pattern layer 5 is a layer transferred from a thermal transfer sheet to the upper support layer 4, for example, as described above. When the skin patch 1 having such a pattern layer 5 is used on the face, the surface of the skin patch 1 may come into contact with the user's hair or a mask worn by the user. Alternatively, the skin patch 1 may come into contact with liquids such as the user's sweat or rain. In this embodiment, the skin patch 1 is provided with a surface protective layer 6 to protect the upper support layer 4 and the pattern layer 5 from contact with other objects or liquids, and covers the front side of the upper support layer 4 and the pattern layer 5. This makes it possible to prevent the pattern layer 5 from peeling off or flowing from the upper support layer 4. In addition, if the surface protective layer 6 is a transparent OPP sheet or the like, the upper support layer 4 and the pattern layer 5 can be physically protected while maintaining the visibility of the pattern (the pattern layer 5 in this embodiment) supported by the upper support layer 4.

[0035] In this embodiment, the design of the skin patch 1 is represented as the design layer 5 thermally transferred onto the surface of the upper support layer 4, but other forms are also possible, for example, printing the design on the surface of the upper support layer 4 itself using ink or the like. In that case, for example, in step S1 of the above process described in Fig. 3, the design may be printed on the upper support layer 4 simultaneously with or separately from printing the eye marks. In that case, the design layer 5 as the layer transferred onto the surface of the upper support layer 4 may be omitted.

[0036] Furthermore, although the surface protective layer 6 protects the design layer 5 as described above, in cases where damage to the design layer 5 is not considered to be a major consideration in light of the expected use conditions of the skin patch 1, or where the adhesion of the design layer 5 to the upper support layer 4 is sufficiently strong, the surface protective layer 6 may be omitted as appropriate. Even in cases where the design layer 5 is omitted and a design is printed on the upper support layer 4, it is assumed that the physical strength of the design is sufficiently high depending on the printing technique and the type of ink used, and in such cases, the surface protective layer 6 may also be omitted as appropriate.

[0037] As described above, the skin patch 1 of this embodiment includes the lower adhesive layer 3 that contains hydrocolloid as a material and constitutes an adhesive layer for contacting the skin, and the upper support layer 4 that is adhered to the front side of the lower adhesive layer 3 and serves as a support for supporting a design. In this way, the skin patch 1 can be suitably attached to the user's skin by the lower adhesive layer 3, and the skin can be decorated with the design supported by the upper support layer 4.

[0038] The skin patch 1 of this embodiment includes a pattern layer 5 that provides a pattern on the surface of the upper support layer 4. In this manner, the pattern layer 5 can provide a pattern on the surface of the upper support layer 4.

[0039] The skin patch 1 of this embodiment is provided with a surface protective layer 6 on the front side of the upper support layer 4. In this way, the upper support layer 4 can be covered to protect the upper support layer 4 and the pattern layer 5 on its surface.

[0040] In the skin patch 1 of this embodiment, the upper support layer 4 can be made of synthetic paper made of polymer resin and adhered with glue to the lower adhesive layer 3. In this way, the skin patch 1 can be suitably constructed using inexpensive materials.

[0041] In the method for manufacturing the skin patch of this embodiment, the upper support layer 4, which serves as a support for supporting the pattern, is adhered to the front side of the lower adhesive layer 3, which contains hydrocolloid as a material and constitutes an adhesive layer for contacting the skin. In this way, the skin patch 1 can be manufactured in an appropriate manner.

[0042] In the method for manufacturing a skin patch of this embodiment, the design layer 5 is thermally transferred onto the surface of the upper support layer 4. In this way, the design layer 5 can be easily and suitably provided when manufacturing the skin patch 1.

[0043] Therefore, according to the present embodiment, application of the patch to the skin can provide the user with a sense of aesthetic satisfaction.

[0044] Incidentally, the skin patch and its manufacturing method of the present invention are not limited to the above-mentioned examples, and it goes without saying that various modifications can be made within the scope of the present invention. [Explanation of symbols]

[0045] 1 Skin patch 3 Bottom adhesive layer 4 Top support layer 5 Pattern Layer 6 Surface protective layer

Claims

1. A lower adhesive layer containing hydrocolloid as a material and forming an adhesive layer for contact with the skin; an upper support layer that is adhered to the front side of the lower adhesive layer and serves as a support for supporting a pattern; A skin patch comprising:

2. A pattern layer is provided on the surface of the upper support layer to provide a pattern. The skin patch according to claim 1 ,

3. A surface protection layer is provided on the surface side of the upper support layer.

3. The skin patch according to claim 1 or 2,

4. The upper support layer is a synthetic paper made of polymer resin and is adhered to the lower adhesive layer with glue. The skin patch according to claim 1 ,

5. The material contains hydrocolloid, and an upper support layer that forms a support for a design is attached to the surface of the lower adhesive layer that constitutes the adhesive layer for contacting the skin. A method for producing a skin patch, comprising the steps of:

6. a pattern layer is thermally transferred onto the surface of the upper support layer; The method for producing the skin patch according to claim 5,

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