Skin design sheet manufacturing method, skin design sheet manufacturing system, and skin design sheet

Abstract

To improve the productivity of a skin-design sheet.SOLUTION: The skin-design sheet manufacturing method includes: an unrolling process where an intermediate transfer medium sheet with a protection layer provided on the substrate is unrolled out from the intermediate transfer medium roll; a skin image formation process where a thermal transfer sheet with a receiving layer and a dye layer provided in sequence on the surface is heated to transfer the receiving layer onto the protection layer and form a skin image by migrating the dye onto the transferred receiving layer; an integration process where the surface of the receiving layer side of the intermediate transfer medium sheet is contacted to a sheet-like laminated sheet that is an elastic sheet with a peeling sheet, an adhesive layer provided on the peeling sheet, and an elastic sheet provided on the adhesive layer, thereby integrating the laminated sheet and the intermediate transfer medium sheet; and a cut-out process where the intermediate transfer medium sheet is cut at a position where the laminated sheet does not exist, and an area including the laminated sheet is cut out.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a skin design sheet manufacturing method, a skin design sheet manufacturing system, and a skin design sheet. [Background technology]

[0002] Skin design sheets, such as tattoo stickers and skin concealing sheets, are known for application to the skin. Tattoo stickers with various designs printed on them are sold at variety stores, sporting and music event venues, amusement parks, etc., and are used to liven up the atmosphere.

[0003] Skin-concealing sheets are sheets in which a base material is pre-colored with a predetermined color by screen printing or the like, and are used to conceal discolorations such as skin blemishes and blemishes. Users choose one that matches their skin color. For example, a skin-concealing sheet is made up of a release sheet, an adhesive layer, a stretchable base material, and a cover sheet laminated in that order, and is attached to the user's skin by peeling off the release sheet, attaching the adhesive layer to the skin, and then peeling off the cover sheet.

[0004] Users can choose a skin concealing sheet that is closest to their own skin color from the multiple colors available on the market, but the colors of skin concealing sheets on the market are limited, and users can be bothered by the color difference between the skin concealing sheet and their skin, which can leave them dissatisfied.

[0005] It is conceivable to produce a skin-concealing sheet by on-demand printing in a color that matches the user's skin tone. A dye-sublimation thermal transfer printer, which has excellent color reproducibility and gradation, is suitable for printing. Thermal transfer printers heat a thermal transfer sheet and transfer dyes to form an image, so the skin-concealing sheet must be provided with a receiving layer to receive the dye. If a receiving layer is provided on a stretchable substrate in advance, there is a risk that the stretchable substrate may melt, be damaged, or be denatured or deformed by the solvent contained in the coating liquid during the process of applying and drying a coating liquid for the receiving layer on the stretchable substrate. Therefore, it is preferable to transfer the receiving layer onto the stretchable substrate by thermal transfer.

[0006] For example, a small roll of an elastic thin film sheet laminated with a release sheet, an adhesive layer, and an elastic substrate is set in the supply section of a thermal transfer printer, a receiving layer is transferred onto the elastic substrate of the elastic thin film sheet unwound from the supply section, and an image is formed on the transferred receiving layer. Alternatively, a transfer layer including the receiving layer on which the image has been formed is transferred onto the elastic substrate of the elastic thin film sheet. After the image formation or transfer layer transfer, the elastic thin film sheet is cut to the desired size using the cutter of the thermal transfer printer to produce a skin-concealing sheet.

[0007] In this manufacturing method, because the adhesive layer is exposed on the edge surface of the stretchable thin film sheet, the adhesive layer may adhere to the conveying member of the thermal transfer printer, causing the release sheet to peel off during conveyance or the stretchable thin film sheet to buckle. Furthermore, adhesive material may adhere to the cutter, resulting in poor cutting. Thus, in the past, there was a risk of reduced productivity due to poor conveyance and poor cutting. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-100851 Summary of the Invention [Problem to be solved by the invention]

[0009] The present disclosure aims to provide a skin design sheet manufacturing method and system that can improve the productivity of skin design sheets, and a skin design sheet with high productivity. [Means for solving the problem]

[0010] The method for manufacturing a skin design sheet disclosed herein comprises the steps of: unwinding an intermediate transfer medium sheet having a protective layer provided on a substrate from an intermediate transfer medium sheet roll; heating a thermal transfer sheet having a receiving layer and a dye layer provided in face-sequential order to transfer the receiving layer onto the protective layer and migrate the dye to the transferred receiving layer to form a skin image; contacting the receiving layer side of the intermediate transfer medium sheet with an elastic sheet of a laminate sheet having a release sheet, an adhesive layer provided on the release sheet, and an elastic sheet provided on the adhesive layer to integrate the laminate sheet and the intermediate transfer medium sheet; and cutting the intermediate transfer medium sheet at a position spaced from the laminate sheet to cut out a region including the laminate sheet.

[0011] The skin design sheet manufacturing system of the present disclosure includes a supply unit that rotates an intermediate transfer medium sheet roll and unwinds an intermediate transfer medium sheet having a protective layer provided on a substrate; a transfer unit that heats a thermal transfer sheet having a receiving layer and a dye layer provided in face-sequential order, transfers the receiving layer onto the protective layer, and migrates dye from the dye layer to the transferred receiving layer to form a skin image; a lamination processing unit that contacts the receiving layer side of the intermediate transfer medium sheet with the stretchable sheet of a laminated sheet having a release sheet, an adhesive layer provided on the release sheet, and an stretchable sheet provided on the adhesive layer, thereby integrating the laminated sheet and the intermediate transfer medium sheet; and a cutter that cuts the intermediate transfer medium sheet at a position spaced from the laminated sheet to cut out a region including the laminated sheet.

[0012] The skin design sheet of the present disclosure comprises an intermediate transfer medium sheet having a substrate and a protective layer provided on the substrate, a receiving layer provided on the protective layer and having a skin image formed thereon, a white layer provided on the receiving layer, and a laminated sheet provided on the white layer and having an elastic sheet, an adhesive layer, and a release sheet laminated in this order from the white layer side, wherein the peripheries of the receiving layer, the white layer, and the laminated sheet are located inside the periphery of the intermediate transfer medium sheet. [Effects of the Invention]

[0013] According to the present disclosure, the productivity of skin-design sheets can be improved. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram of a skin-design sheet manufacturing system according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view of an intermediate transfer medium sheet. [Figure 3] FIG. 2 is a plan view of a thermal transfer sheet. [Figure 4] FIG. 2 is a cross-sectional view of a laminated sheet. [Figure 5] FIG. 2 is a cross-sectional view of an intermediate transfer medium sheet. [Figure 6] FIG. 2 is a cross-sectional view of an intermediate transfer medium sheet. [Figure 7] FIG. 2 is a cross-sectional view of a skin design sheet. [Figure 8] 8A and 8B are plan views of the skin design sheet. DETAILED DESCRIPTION OF THE INVENTION

[0015] 1 is a schematic diagram of a skin design sheet manufacturing system according to an embodiment of the present disclosure. The skin design sheet manufacturing system includes a transfer unit U1 that transfers a receptor layer from a thermal transfer sheet 10 to an intermediate transfer medium sheet 40 and forms an image on the transferred receptor layer, a lamination processing unit U2 that integrates the image-formed intermediate transfer medium sheet 40 with a laminated sheet 20 to produce a skin design sheet 50, a cutter 36 that cuts out the skin design sheet 50, and a control unit (not shown) that controls each unit.

[0016] The intermediate transfer medium sheet 40 is in the form of a long strip and is unwound from an intermediate transfer medium sheet roll 30. The intermediate transfer medium sheet roll 30 is attached to a reel part (supply part) not shown, and when the reel part is rotated, the intermediate transfer medium sheet roll 30 rotates and the intermediate transfer medium sheet 40 is transported.

[0017] As shown in FIG. 2, the intermediate transfer medium sheet 40 has a transparent substrate 41, a release layer 42, and a protective layer 43 laminated in this order.

[0018] The thermal transfer sheet 10 is in the form of a long strip, and is fed from a supply section 33 of the transfer section U1, passes through the thermal head 31, and is wound up and collected by a collection section .

[0019] As shown in FIG. 3, the thermal transfer sheet 10 has a transfer-type receiving layer 11, a yellow dye layer 12, a magenta dye layer 13, a cyan dye layer 14, and a white layer 15 formed in surface order on one surface of a base sheet (not shown) from the recovery section 34 side. The receiving layer 11 is a transparent layer that receives the dye transferred from the thermal transfer sheet 10. The yellow dye layer 12, the magenta dye layer 13, and the cyan dye layer 14 contain a binder resin and a sublimable dye. Known materials can be used for the yellow dye layer 12, the magenta dye layer 13, and the cyan dye layer 14. The white layer 15 is a heat-seal layer containing a white pigment, but a heat-seal layer that does not contain a white pigment may be provided instead of the white layer.

[0020] The laminated sheet 20 is a sheet type, and is shaped so that it can be attached to the user's bare skin as a skin design sheet. As shown in Figure 4, the laminated sheet 20 has a release sheet 21, an adhesive layer 22, and an elastic sheet 23, which are laminated in this order. To make it easier to peel off the release sheet 21 when using the skin design sheet, the release sheet 21 may be half-cut or perforated in advance.

[0021] In the transfer section U1, a rotatable platen roll 32 is provided on the opposite side of the thermal head 31 with the thermal transfer sheet 10 sandwiched between them. The thermal head 31 and the platen roll 32 sandwich the intermediate transfer medium sheet 40 and the thermal transfer sheet 10, and the thermal head 31 heats the thermal transfer sheet 10 from the back side.

[0022] The thermal head 31 heats the transfer mold receiving layer 11 and transfers the receiving layer 11 onto the protective layer 43 of the intermediate transfer medium sheet 40, as shown in Fig. 5. The receiving layer 11 is transferred in a shape that matches the laminated sheet 20 to be bonded in the lamination processing unit U2.

[0023] Next, the thermal head 31 sequentially heats the yellow dye layer 12, magenta dye layer 13, and cyan dye layer 14 based on the data of the skin design sheet, transferring the dyes to the receiving layer 11 on the image receiving sheet 20 to form a skin design sheet image G. The skin design sheet image G is a skin image that corresponds to the skin color of the user using the skin design sheet and the color and shape of the discolored part of the skin.

[0024] Next, the thermal head 31 heats the white layer 15 of the thermal transfer sheet 10, and transfers the white layer 15 onto the receiving layer 11 on which the skin-design sheet image G has been formed, as shown in FIG.

[0025] The intermediate transfer medium sheet 40 onto which the receiving layer 11 and the white layer 15 have been transferred is transported to the lamination processing unit U2. Also, the laminated sheet 20 in the form of a single sheet is transported to the lamination processing unit U2. The lamination processing unit U2 aligns the stretchable sheet 23 of the laminated sheet 20 and the white layer 15 on the intermediate transfer medium sheet 40 so that they face each other and come into contact with each other, and as shown in FIG. 7, heat rollers 35 heat and press the laminated sheet 20 and the intermediate transfer medium sheet 40 together, bonding them together to form a single sheet with a textured surface 50.

[0026] 8A and 8B are plan views of the skin design sheet 50. The width W2 of the laminated sheet 20 in the direction perpendicular to the transport direction is shorter than the width W1 of the intermediate transfer medium sheet 40 in the short side direction. For example, as shown in FIG. 8A, when the laminated sheet 20 is rectangular in plan view, the length W2 of one side of the laminated sheet 20 is shorter than the width W1 of the intermediate transfer medium sheet 40 in the short side direction. As shown in FIG. 8B, when the laminated sheet 20 is circular in plan view, the diameter W2 of the laminated sheet 20 is shorter than the width W1 of the intermediate transfer medium sheet 40 in the short side direction.

[0027] The laminated sheet 20 is integrated with the intermediate transfer medium sheet 40 at a position spaced from the side edge 40s extending in the longitudinal direction of the intermediate transfer medium sheet 40 toward the center, and the area between the laminated sheet 20 and the side edge 40s forms a margin area.

[0028] The cutter 36 cuts the intermediate transfer medium sheet 40 along the short direction at a position separated from the laminate sheet 20 (a position where the laminate sheet 20 is not present), and cuts out the skin design sheet 50 from the intermediate transfer medium sheet 40. In the cut-out skin design sheet 50, the periphery of the laminate sheet 20 is located inside the periphery of the intermediate transfer medium sheet 40, and the intermediate transfer medium sheet 40 functions as a cover sheet.

[0029] The user peels off the release sheet 21 from the prepared skin design sheet 50 and uses the adhesive layer 22 to attach the skin design sheet 50 to the skin so as to cover the discolored area of ​​the skin. Then, the transparent substrate 41 and the release layer 42 are peeled off. The periphery of the laminated sheet 20 including the adhesive layer 22 forms a margin area (edge ​​portion), making the transparent substrate 41 and the release layer 42 easy to grip. The protective layer 43 in the margin area is removed together with the transparent substrate 41 and the release layer 42, and the protective layer 43 remains on the receiving layer 11.

[0030] In this embodiment, the intermediate transfer medium sheet 40 that is unwound from the intermediate transfer medium sheet roll 30 and onto which the receiving layer is transferred at the transfer section U1 does not contain an adhesive layer, so adhesion of the adhesive layer to the transport member can be prevented.

[0031] Furthermore, since the cutter 36 cuts the intermediate transfer medium sheet 40 at a position separated from the laminated sheet 20 including the adhesive layer 23, it is possible to prevent adhesive matter from adhering to the cutter 36 and causing a deterioration in cutting performance.

[0032] Furthermore, since the transparent substrate 41 of the intermediate transfer medium sheet 40 functions as a cover sheet for the skin design sheet 50, the process of attaching the cover sheet can be omitted.

[0033] In addition, in this embodiment, the laminated sheet 20 including the elastic sheet 23 is made into a sheet and integrated with an intermediate transfer medium sheet to which the receiving layer has been transferred, and since a long, thin, strip-shaped laminated sheet is not transported within the device, buckling of the elastic sheet can be suppressed.

[0034] The heat roller 35 of the lamination processing unit U2 is driven, and can prevent the elastic sheet 23 inside the intermediate transfer medium sheet 40 from being turned over due to a shear force being directly applied from the heat roller 35 at the lamination processing unit U2. Similarly, the side edge 40s of the intermediate transfer medium sheet 40 contacts the guide member, and the end face of the laminated sheet 20 does not directly contact the guide member, so that the adhesive layer can be prevented from coming into contact with the guide member or the heat roller 35.

[0035] As described above, according to this embodiment, the productivity of the texture design sheet can be improved.

[0036] The material of the intermediate transfer medium sheet 40 will now be described.

[0037] The transparent substrate 41 of the intermediate transfer medium sheet 40 can be a plastic substrate such as polyethylene terephthalate.

[0038] The release layer 42 is intended to improve the releasability of the transparent substrate 41, and may contain a component having releasability, such as wax.

[0039] A transparent resin material can be used for the protective layer 43. The protective layer 43 is preferably matte with low surface reflectance to prevent shine when applied to the skin. Here, "matte" refers to a state with a glossiness of 40% or less. The glossiness is measured using a gloss meter at an incident angle of 45°.

[0040] Next, the material of the thermal transfer sheet 10 will be described.

[0041] Examples of resins for forming the receiving layer 11 of the thermal transfer sheet 10 include polyolefin resins such as polypropylene, halogenated polymers such as polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, and polyvinylidene chloride, vinyl polymers such as polyvinyl acetate, ethylene-vinyl acetate copolymer, and polyacrylic ester, polyester resins such as polyethylene terephthalate and polybutylene terephthalate, polystyrene resins, polyamide resins, copolymer resins of olefins such as ethylene and propylene with other vinyl monomers, ionomers, cellulose resins such as cellulose diacetate, polycarbonate resins, polyvinyl acetal resins, and polyvinyl alcohol resins.

[0042] The white layer 15 is a heat seal layer containing a white pigment such as silica, titanium oxide, titanium dioxide, zinc oxide, cerium oxide, titanium mica, muscovite, white carbon, calcium carbonate, barium sulfate, alumina white, or talc. A concealing layer may be further provided on the white layer. The concealing layer is preferably a metal pigment, such as aluminum, nickel, chromium, brass, tin, brass, bronze, zinc, silver, platinum, gold, or oxides thereof, or particles of glass or the like subjected to metal vapor deposition. Among these, aluminum pigments are particularly preferred in terms of the transferability and glossiness of the concealing layer. Furthermore, the aluminum pigment may be either a leafing or non-leafing type, but non-leafing types are preferred in terms of the transferability and glossiness of the concealing layer.

[0043] Next, the material of the laminated sheet 20 will be described.

[0044] Release paper or the like that has been subjected to a silicone release treatment or the like can be used as the release sheet 21 of the laminated sheet 20. The thickness of the release sheet is preferably about 130 μm or more and 210 μm or less.

[0045] The surface of the release sheet (the surface on which the adhesive layer is provided) preferably has a plurality of recesses (dimples). The planar shape of the recesses is approximately circular with a diameter of approximately 2 mm to 3 mm. The recesses occupy approximately 3% to 20% of the surface of the release sheet. The bottoms of the recesses are curved, and the depth of the deepest part is approximately 1 μm to 17 μm. By forming such recesses on the surface of the release sheet, the peel force between the release sheet and the adhesive layer can be adjusted to an appropriate value.

[0046] The adhesive layer 22 is preferably made of a urethane or acrylic adhesive that is less likely to cause rashes or inflammation on the skin. Furthermore, a gel-type adhesive is preferable to ensure close contact with the skin. The thickness of the adhesive layer is, for example, 15 μm or more and 30 μm or less.

[0047] For example, a urethane film can be used for the stretchable sheet 23. The stretchable sheet preferably has an elongation rate of approximately 30% to 100%, more preferably approximately 60%, so that it can follow the expansion and contraction of the skin when attached.

[0048] The elongation percentage of the stretchable sheet is determined by a test method conforming to JIS-K-7127 (1999). The elongation percentage can be calculated using the following formula (1). Elongation (%) = 100 × (L - L0) / L0 Equation (1)

[0049] In formula (1), L is the length at which the stretchable sheet breaks (ruptures) when it is pulled at a speed of 200 mm / min using a tensile tester. L0 in formula (1) is the length of the recorded portion before being pulled by the tensile tester. A Tensilon universal material testing machine or the like can be used as the tensile tester.

[0050] In addition, to allow permeation of sweat vapor from the skin, 1000g / (m 2 It is preferable that the material has a moisture permeability of at least 24 hours.

[0051] The thickness of the stretchable sheet is preferably 5 μm or more, more preferably 7 μm or more, to prevent wrinkles during application and to improve workability, and is preferably 30 μm or less to prevent discomfort during application.

[0052] In the above embodiment, the receiving layer 11 was transferred from the thermal transfer sheet 10 onto the protective layer 43 of the intermediate transfer medium sheet 40, but it is also possible to provide a receiving layer in advance on the protective layer 43 of the intermediate transfer medium 40 and omit the receiving layer 11 from the thermal transfer sheet 10.

[0053] Although the present disclosure has been described in detail with reference to specific embodiments, it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit and scope of the present disclosure. [Explanation of symbols]

[0054] 10 Thermal transfer sheet 11 Receptor 15 White layer 20 Laminated Sheet 21 Peel-off sheet 22 Adhesive layer 23 Elastic Sheet 40 Intermediate transfer medium sheet 41 Transparent base material 42 Release layer 43 Protective layer 50 Skin design sheet

Claims

1. a step of unwinding an intermediate transfer medium sheet having a protective layer provided on a substrate from an intermediate transfer medium sheet roll; a step of heating a thermal transfer sheet on which a receptor layer and a dye layer are provided in face-sequential order, transferring the receptor layer onto the protective layer, and transferring the dye to the transferred receptor layer to form a skin image; a step of contacting the surface of the intermediate transfer medium sheet on the receiving layer side with the stretchable sheet of a laminate sheet having a release sheet, an adhesive layer provided on the release sheet, and an elastic sheet provided on the adhesive layer, thereby integrating the laminate sheet and the intermediate transfer medium sheet; cutting the intermediate transfer medium sheet at a position where the laminate sheet is not present to cut out an area including the laminate sheet; A method for manufacturing a skin design sheet comprising:

2. 2. The method for manufacturing a skin design sheet according to claim 1, wherein the laminated sheet is integrated with the intermediate transfer medium sheet at a position spaced apart from a side edge of the intermediate transfer medium sheet.

3. The method for manufacturing a skin-design sheet according to claim 1 or 2, further comprising a step of transferring a white layer onto the receiving layer on which the skin image has been formed.

4. 4. The method for manufacturing a skin-design sheet according to claim 1, wherein the stretchable sheet is a urethane film.

5. a supply unit that rotates an intermediate transfer medium sheet roll and unwinds an intermediate transfer medium sheet having a base material and a protective layer provided thereon; a transfer unit that heats a thermal transfer sheet on which a receptor layer and a dye layer are provided in face-sequential order, transfers the receptor layer onto the protective layer, and transfers a dye from the dye layer to the transferred receptor layer to form a skin image; a lamination processing section that brings the surface of the intermediate transfer medium sheet on the receiving layer side into contact with the stretchable sheet of a laminate sheet having a release sheet, an adhesive layer provided on the release sheet, and an elastic sheet provided on the adhesive layer, thereby integrating the laminate sheet and the intermediate transfer medium sheet; a cutter that cuts the intermediate transfer medium sheet at a position where the laminated sheet does not exist, thereby cutting out an area including the laminated sheet; A skin design sheet manufacturing system equipped with:

6. an intermediate transfer medium sheet having a substrate and a protective layer provided on the substrate; a receptor layer provided on the protective layer and having a skin image formed thereon; a white layer provided on the receiving layer; a laminated sheet provided on the white layer, the laminated sheet having a stretchable sheet, an adhesive layer, and a release sheet laminated in this order from the white layer side; Equipped with The peripheral edges of the receiving layer, the white layer, and the laminated sheet are located inside the peripheral edge of the intermediate transfer medium sheet.

7. a step of unwinding an intermediate transfer medium sheet from an intermediate transfer medium sheet roll, the intermediate transfer medium sheet having a protective layer provided on a substrate and a receiving layer provided on the protective layer; a step of heating the thermal transfer sheet provided with the dye layer to transfer the dye to the receptor layer and form a skin image; a step of contacting the surface of the intermediate transfer medium sheet on the receiving layer side with the stretchable sheet of a laminate sheet having a release sheet, an adhesive layer provided on the release sheet, and an elastic sheet provided on the adhesive layer, thereby integrating the laminate sheet and the intermediate transfer medium sheet; cutting the intermediate transfer medium sheet at a position where the laminate sheet is not present to cut out an area including the laminate sheet; A method for manufacturing a skin design sheet comprising:

Images