JP4618268B2 - Decorative sheet for adhesion to human body and method for producing the same - Google Patents

Description

  The present invention relates to a decorative sheet for attaching to the human body used by adhering to the face, arms, and other parts of the human body, and a method for manufacturing the decorative sheet.

  Soccer and Olympic spectators are painting national flags on their faces and arms and painting character designs on their faces at theme parks, but once these paintings are erased Again, it is necessary to have them painted when watching the game, and in recent years, various types of seals with decorations such as these designs that can be reused have been proposed (see, for example, Patent Documents 1 to 3).

  In Patent Document 1, a hologram that can be reproduced even under natural light is attached to a part of the human body to make it easier to catch the eye, and at least a Lippmann hologram layer capable of reproducing a recorded image by natural light and the Lippmann hologram layer are arranged on the human body. There has been proposed a method in which a hologram seal 10 composed of an adhesive layer to be attached to a face is attached to a human body face F or the like with an adhesive layer.

  Further, in Patent Document 2, as a method for producing a body-attached decorative body having a three-dimensional effect, a natural drying type is used on a release surface of a release sheet by using a screen mold having a watermark corresponding to the shape of the decorative body. A process of forming an adhesive layer by printing an adhesive, wherein the screen mold has a mesh density of 120 or less, and a screen mold having a watermark portion corresponding to the design of the decorative body. Forming a main body layer by printing a printing agent containing an adhesive resin on the adhesive layer, wherein the mesh density of the screen mold is 150 or less, and the printing agent has a viscosity of 30000 centipoise to 200000 centipoise at room temperature. There has been proposed a manufacturing method comprising a step of having a viscosity and a thickness of the main body layer of 80 μm or more and a step of evaporating and drying the main body layer.

  Further, Patent Document 3 is a sticker to be attached to a part of the body so that a multicolor pattern printed layer can clearly appear, and on the outer surface side of a white translucent masking layer. Then, a release film is laminated next to the first adhesive layer, and a multicolor pattern printing layer and a backing sheet are laminated next to the back side of the masking layer. The release film is peeled off, the entire seal is applied to a part of the body with the first adhesive layer, and then the mount is peeled off. There has been proposed a design in which the pattern printing layer appears with the masking layer as a background.

  However, they all have a complicated structure, particularly a laminated structure, which is costly and may cause peeling between layers as it is repeatedly applied to / removed from the skin. High and has a problem with durability.

Japanese Unexamined Patent Publication No. 2000-6588 JP 2005-119091 A Utility Model Registration No. 30211171

  Therefore, in view of the above-mentioned situation, the present invention intends to provide a decorative sheet for human body adhesion that has high durability while suppressing cost, and that is excellent in a feeling of wearing on the skin, and a method for producing the same. is there.

In order to solve the above-mentioned problems, the present invention is composed of a soft silicone-based molded body, and has an adhesive layer that adheres to human skin and an elastic hard silicone-based molded body, A decorative sheet for adhering to a human body, characterized by comprising a coating layer laminated on the upper surface side of the layer, was constructed. The silicone-based molded body is a molded body of a silicone polymer, and generally includes a silicone rubber having a modulus of elasticity higher than 10 ⁵ N / m ² and a low silicone gel.

  Here, the coating layer is light transmissive, and a decorative sheet body made of fiber or synthetic resin including paper and cloth is interposed at a predetermined portion excluding a peripheral portion between the adhesion layer and the coating layer. And what gave the decorativeness by this is preferable.

  Further, it is preferable that the coating layer has light transmittance and a decorative portion by transfer printing is formed on the lower surface side of the coating layer.

  Furthermore, it is preferable that the silicone-based molded body of the adhesion layer and the silicone-based molded body of the coating layer are both silicone gel molded bodies having different curing conditions.

  Further, it is preferable that the adhesion layer has a JIS-A hardness of 3 to 4 degrees and the coating layer has a JIS-A hardness of 14 to 16 degrees.

  In addition, it is preferable that the peripheral portion of the sheet is configured so as to gradually become thinner toward the outside by inclining the upper surface side in a substantially tapered shape.

  In addition, it is preferable to incorporate an IC tag inside the adhesion layer, inside the coating layer, or between the adhesion layer and the coating layer.

  Further, the present invention is composed of a soft silicone-based molded body, and has an adhesive layer that adheres to human skin and an elastic hard silicone-based molded body, and is laminated on the upper surface side of the adhesive layer. A method for producing a decorative sheet for adhering to a human body, comprising: a hard silicone-based molded body constituting the coating layer, wherein the hard silicone-based molded body is in a semi-cured state. Furthermore, the present invention also provides a method for producing a decorative sheet for adhering to a human body, wherein a soft silicone-based molded body constituting the adhesive layer is laminated thereon.

  Here, before molding the soft silicone-based molded body, paper or cloth-containing fiber or synthetic resin is formed in a predetermined portion excluding the peripheral edge on the semi-cured hard silicone-based molded body. It is preferable to give a decorative property by placing a decorative sheet body and laminating and molding a soft silicone-based molded body constituting the adhesive layer thereon.

  In addition, it is preferable that a soft silicone-based molded body constituting the adhesion layer is laminated and formed on the semi-cured hard silicone-based molded body after applying a charge to ultra soft water. .

  According to the present invention as described above, the adhesive layer made of a soft silicone-based molded article that is less harmful to the skin reliably adheres to the skin and prevents it from peeling off easily. Since the coating layer to be laminated is made of a hard silicone-based molded body having elasticity, there is no stickiness like an adhesion layer, it is possible to prevent dirt due to adhesion of dust, etc., and to have elasticity. Since the sheet as a whole is flexible, even if the skin is deformed by moving the body while it is attached to the skin (for example, even if the skin of the face laughs or screams) It bends following the deformation, maintains its adhesion to the skin, and can provide good adhesion to the skin and an excellent wearing feeling.

  In addition, since the adhesion layer and the coating layer laminated thereon are made of the same silicone-based molded body, the compatibility at the time of lamination molding is excellent, and the mutual bonding strength is excellent. There is no delamination between layers, and a decorative seal excellent in durability can be provided.

  In addition, the coating layer is light transmissive, and a decorative sheet body made of fiber or synthetic resin including paper and cloth is interposed at a predetermined portion excluding the peripheral portion between the adhesion layer and the coating layer. It is possible to decorate easily without incurring costs by providing a decorative property, or the coating layer has a light-transmitting property, and a decorative portion by transfer printing is formed on the lower surface side of the coating layer. At the same time, it is possible to construct a decorative portion having excellent durability without deterioration of the decoration as compared with the one printed on the surface. In addition to colorless and transparent, the light transmission includes semi-transparent such as colored and transparent.

  Further, since the silicone-based molded body of the adhesion layer and the silicone-based molded body of the coating layer are both silicone gel molded bodies having different curing conditions, these silicone gel molded bodies are also used as, for example, a bust top cover. The soft adhesion layer has good adhesion to the skin, and the hard coating layer can exhibit good rubber elasticity, and can provide an excellent wearing feeling. Moreover, it is excellent also in the compatibility mentioned above, and the thing with the large joining strength between layers and excellent in durability can be provided.

  Specifically, since the adhesion layer has a JIS-A hardness of 3 to 4 degrees and the coating layer has a JIS-A hardness of 14 to 16 degrees, the adhesion of the adhesion layer to the skin and the rubber elasticity of the coating layer Can be made extremely good.

  In addition, since the periphery of the sheet is formed into a shape that gradually becomes thinner by inclining the upper surface side in a substantially tapered shape, the attached skin surface greatly fluctuates due to changes in facial expression, etc. However, the thin-walled portion can be easily deformed to follow skin fluctuations, and can be prevented from peeling off from the periphery of the sheet, thereby improving the adhesion.

  In addition, since an IC tag is incorporated inside the adhesive layer, inside the coating layer, or between the adhesion layer and the coating layer, by holding information in the IC tag, for example, when passing through a gate such as an Olympic venue or a soccer venue. It can be used as an authentication tag.

  In addition, a hard silicone molded body constituting the coating layer was molded, and a soft silicone molded body constituting the adhesion layer was laminated thereon while the hard silicone molded body was in a semi-cured state. Therefore, excellent compatibility can be exhibited and mutual bonding strength can be improved.

  Further, before molding the soft silicone-based molded body, a decorative sheet made of fiber or synthetic resin including paper and cloth at a predetermined portion excluding the peripheral edge on the semi-cured hard silicone-based molded body By placing a body and laminating and molding a soft silicone-based molded body constituting the adhesion layer thereon, a sheet having excellent decorativeness can be efficiently manufactured while suppressing costs.

  In addition, since a soft silicone-based molded body constituting the adhesion layer was laminated and molded on a semi-cured hard silicone-based molded body after applying a charge imparted to ultra-soft water, compatibility is achieved. It is possible to further improve the bonding strength. Ultra soft water is obtained by removing calcium ions from the soft water, and the charge is applied by applying an alternating current or direct current to the ultra soft water.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a decorative sheet 1 for adhering to a human body according to the present invention, in which FIGS. 1 to 6 show typical embodiments, in which reference numeral 1 is a decorative sheet for adhering to a human body, 2 is an adhesive layer, 3 Denotes a coating layer, 4 denotes a decorative portion, and 40 denotes a decorative sheet body.

  As shown in FIGS. 1 and 2, the decorative sheet for human body attachment 1 of the present invention is made of a soft silicone-based molded body, has an adhesive layer 2 that has adhesiveness and adheres to the human skin, and a hard elastic material. And a coating layer 3 laminated on the upper surface side of the adhesion layer 2.

  More specifically, the coating layer 3 is transparent or translucent and has light transmission, and a predetermined portion excluding a peripheral portion between the adhesion layer 2 and the coating layer 3 is made of a fiber including paper or cloth, or A decorative sheet body 40 made of a synthetic resin such as a polypropylene (PP) sheet is interposed, and the decorative sheet body 40 functions as a decorative portion 4 that can be seen from the surface side through the coating layer 3 having light permeability. The decoration is given to.

  In the present embodiment, the decorative sheet body 40 is interposed in this manner to provide a decorative property. However, the adhering layer 2 and the covering layer 3 are mixed with a pigment or a dye to add a color, thereby providing a decorative property. As described later, the decorative portion 4 is formed by printing on the lower surface side (inner surface side) of the coating layer 3, a pattern or the like is further applied on the coating layer 3, and decorativeness is imparted. For example, a plurality of layers made of the same silicone-based composition or other composition, such as a third layer and a fourth layer, may be further laminated.

  Since the adhesive layer 2 having adhesiveness adheres to the human skin, the decorative sheet 1 for adhering to the human body of the present invention suitably adheres to, for example, the human face, arms, and other parts as shown in FIG. It can be used many times, and it is a sheet that is convenient to use without having to redraw it once it has been dropped like conventional paint. From the outside, it is a light-transmissive coating. The decorative sheet body 40 sandwiched inside through the layer 3 can be seen, and is configured as a sheet on which various decorations can be applied as in the case of conventional paint. Specifically, it can be suitably used as a sticker for sticking a body painting sticker of a soccer or Olympic spectator or a tattoo imitating an arm or the like.

  In this embodiment, the silicone-based molded body of the adhesion layer 2 and the silicone-based molded body of the coating layer 3 are both composed of silicone gel molded bodies having different curing conditions. As the silicone gel, various conventionally known materials such as a heat curing type, a room temperature curing type, a condensation curing type, and an addition curing type can be used. In the present embodiment, the adhesion strength is improved by laminating the adhesion layer 2 and the coating layer 3 using the same kind of silicone composition in this way. In particular, as described later, the coating layer 3 is in a semi-cured state. By forming the adhesion layer 2 inside, the bonding strength was further improved due to the compatibility between the compositions.

  The coating layer 3 is not required to have adhesiveness that adheres to the skin like the adhesive layer 2, and is set to have lower adhesiveness to prevent adhesion of dust, etc. However, following the deformation of the face, etc. It is necessary to have elasticity that does not cause peeling or the like. Specifically, the JIS-A hardness of the adhesion layer 2 measured by a spring tester A type is preferably set to 3 to 4 degrees, whereas the JIS-A hardness of the coating layer 3 is preferably 14 to It is set to 16 degrees, more preferably 15 degrees. Further, the adhesiveness (adhesive strength, adhesiveness) of the adhesive layer 2 is 6 to 9 N / 25 mm, more preferably 7 to 8 N / 25 mm, with a 180 degree peeling measurement method (average value) based on JIS Z 0237, More preferably, it is set to 7.5 N / 25 mm. Thereby, the excellent adhesiveness with respect to the human skin is obtained.

  For example, when molding using an addition reaction curable liquid silicone gel as the silicone gel, the adhesion layer 2 is made soft and the coating layer 3 is made hard with different mixing ratios of curing agents, that is, crosslinking agents. As such an addition reaction curable liquid silicone gel, it is preferable to use a highly safe material for the skin, such as “WACKER SilGel 612 A + B”, for example, Asahi Kasei Wacker Silicone Co., Ltd. In addition, about the coating layer 3, it is good also as a silicone rubber molded object instead of a silicone gel molded object.

  The decorative sheet 1 for adhering to a human body according to this embodiment includes the adhesive layer 2, the coating layer 3, and a decorative sheet body 40 interposed therebetween, and is formed as a multi-layered flat plate as a whole. It is also possible to form a decorative part having a three-dimensional shape by raising the part or the whole to the upper surface side. In this case, various forms such as laminating the covering layer 3 in such a three-dimensional shape and making the decorative sheet body 40 three-dimensional can be employed.

  Further, in the present embodiment, as can be seen from the cross-sectional view of FIG. 2, a flange portion 7 is formed on the seat peripheral portion 10 so that the upper surface side is inclined in a substantially tapered shape and gradually becomes thinner toward the outside. The function of preventing the thin flange portion 7 from easily deforming and following the variation and peeling off from the sheet peripheral portion 10 even if the skin surface adhering to the face changes greatly due to a change in facial expression. I play. In this example, the upper surface side is inclined in a substantially tapered shape, but a thin flange portion that protrudes horizontally at a substantially right angle from the lower end of the sheet peripheral portion 10 may be formed.

  Hereinafter, based on FIG. 3, the manufacturing method of the decoration sheet 1 for a human body adhesion is demonstrated.

  As shown to (a) in a figure, the hard silicone type molded object which comprises the coating layer 3 is shape | molded first using the shaping | molding die 60,61. Some silicone-based compositions may be cured at room temperature, but when molding with a composition that requires heating, use a mold with a built-in heater or place in a hot air circulation oven. And so on.

  Next, the upper mold 61 is removed in a semi-cured state (a state where crosslinking is not sufficient) before the coating layer 3 is completely cured, and the peripheral portion on the molded body (the lower surface side in FIG. 2) is removed. As shown in (b) in the figure, the decorative sheet body 40 constituting the decorative portion 4 is placed on the predetermined portion, and the super soft water 5 imparted with electric charge is applied. Due to the presence of the ultra-soft water 5, compatibility with the adhesion layer 2 to be laminated later is increased, and the mutual bonding strength is improved.

  Next, while the coating layer 3 is in a semi-cured state, a soft silicone-based molded body constituting the adhesion layer 2 using a molding die 62 is formed on the molded body as shown in FIG. Laminate molding. And after making it harden | cure over predetermined time, the shaping | molding die 60 and 62 is opened, and as shown in (d) in the figure, the decoration sheet 1 which is a molded article is taken out.

  As a modified example, as shown in FIG. 4, instead of or on the decorative sheet body 40, a decoration pattern or the like is formed on the formed coating layer 3 (on the lower surface side in FIG. 2) by transfer printing. It is also a preferable example that the decorative portion 4 is formed by forming a printed printing portion 41.

  As another modified example, an IC tag 6 is incorporated in the decorative sheet 1 for attaching to a human body so that it can be authenticated when passing through a gate such as an Olympic venue or a soccer venue. As shown in FIG. 5, such an IC tag 6 is preferably interposed between the adhesive layer 2 and the covering layer 3, as in the case of the decorative sheet body 40 described above. It is preferable that the printer is mounted so as to be hidden under the printing unit 41. As a result, the IC tag 6 is not visible from the outside through the coating layer 3, and it is possible to prevent the problem that the decorativeness is impaired.

  In addition to being interposed between the adhesion layer 2 and the coating layer 3 in this way, it is also preferable to embed the adhesion layer 2 or the coating layer 3 inside the molding. In this case, similarly to the above, it is preferable to embed the adhesive layer 2 in a portion hidden by the decorative sheet body 40 or the printing unit 41 so as not to impair the decorative property. Various IC tags such as an RFID tag known as a wireless tag can be used. As in the case of the IC tag, it is also a preferred embodiment to embed jewels or the like to bring out decoration.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and can of course be implemented in various forms without departing from the gist of the present invention.

  Next, with respect to Example 1 of the decorative sheet for adhering to the human body of the present invention, the results of repeatedly testing the durability of the joint portion between the adhesion layer 2 and the coating layer 3 will be described mainly by repeatedly applying to and removing from the skin.

  The decorative sheet for adhering to the human body of Example 1 is obtained by laminating and forming both the adhesion layer and the coating layer using Asahi Kasei Wacker Silicone Co., Ltd. “WACKER SilGel 612 A + B”. The layer was 2: 1 and the adhesion layer was 1.2: 1, and a cloth decorative sheet as shown in FIG. As a result, even if the pasting / peeling was repeated 100 times, peeling between the adhesive layer and the coating layer and other damages were not observed, and it was confirmed that they had sufficient durability.

  Next, a test was conducted to confirm the improvement of the bonding strength by using ultra-soft water imparted with electric charge. In this test, both layers are the same hard silicone-based molded body as the coating layer (Asahi Kasei Wacker Silicone Co., Ltd. “WACKER SilGel 612 A + B”, molded with a mixing ratio of A liquid and B liquid of 2: 1). Samples with and without the above ultrasoft water were prepared at the time of molding, and the peel strength was compared.

  In both layers, a rectangular laminated sheet having a thickness of 5 mm (total thickness of 10 mm) and a length of 30 mm and a width of 40 mm was prepared, and no cloth or the like was interposed therebetween. Then, a tear was made at the boundary between the layers on the vertical side, one was fixed, the other was pulled with a spring balance, and the load when starting separation was measured.

  As a result, the sample molded without using the ultra-soft water to which the charge was applied started to be separated at 1.7 kg and completely separated with the load, while the sample using the ultra-soft water was 4.0 kg. Separation started and complete separation was not achieved. Thereby, it turns out that the mutual joint strength increases and durability improves by using the super soft water which provided the said electric charge.

The perspective view which shows the decoration sheet for human body adhesion which concerns on embodiment of this invention. Sectional drawing which similarly shows the decoration sheet for human body adhesion. Explanatory drawing which similarly shows the manufacture procedure of the decoration sheet for a human body adhesion. Sectional drawing of the principal part which similarly shows the modification of the decoration sheet for human body adhesion. Sectional drawing of the principal part which shows the other modification of the decoration sheet for human body adhesion similarly. Explanatory drawing which similarly shows the use condition of the decoration sheet for a human body adhesion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Decorative sheet for human body attachment 2 Adhesion layer 3 Cover layer 4 Decoration part 5 Super soft water 6 Tag 7 Flange part 10 Sheet peripheral part 40 Decoration sheet body 41 Printing part 60, 61, 62 Mold

Claims (5)

An adhesive layer made of a soft silicone-based molded body and having adhesiveness and adhering to the human skin, and a coating layer made of an elastic hard silicone-based molded body and laminated on the upper surface side of the adhesive layer a body attached decorative sheet being configured,
A decorative sheet for adhering to a human body , characterized in that the periphery of the sheet is formed into a shape that gradually becomes thinner toward the outside by inclining the upper surface side into a substantially tapered shape. An adhesive layer made of a soft silicone-based molded body and having adhesiveness and adhering to the human skin, and a coating layer made of an elastic hard silicone-based molded body and laminated on the upper surface side of the adhesive layer a body attached decorative sheet being configured,
An ornamental sheet for adhering to a human body, wherein an IC tag is incorporated in the adhesion layer, in the coating layer, or between the adhesion layer and the coating layer.   An adhesive layer made of a soft silicone-based molded body and having adhesiveness and adhering to the human skin, and a coating layer made of an elastic hard silicone-based molded body and laminated on the upper surface side of the adhesive layer A method for producing a decorative sheet for adhering to a human body, comprising molding a hard silicone-based molded body constituting the coating layer, and the hard silicone-based molded body being in a semi-cured state, A method for producing a decorative sheet for adhering to a human body, comprising laminating a soft silicone-based molded body constituting an adhesive layer. Before molding the soft silicone-based molded body, a decorative sheet body made of fiber or synthetic resin including paper and cloth at a predetermined portion excluding a peripheral edge on the semi-cured hard silicone-based molded body 4. The method for producing a decorative sheet for adhering to a human body according to claim 3 , wherein decorativeness is imparted by laminating a soft silicone-based molded body constituting the adhesive layer from above. On the hard silicone molded body of the semi-cured state, after coating a material obtained by applying a charge to ultra soft water, comprising a laminate molded silicone moldings soft constituting the adhesion layer according to claim 3 Or the manufacturing method of the decorative sheet for human body adhesion of 4 .

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