Transfer seals that can be stored for a long period of time, and methods for manufacturing the same.

Abstract

We provide transfer stickers that cleanly transfer only the image onto the target object and have long-term storage capabilities (more than one year). [Solution] The present invention provides a method for manufacturing a transfer seal, comprising: a first step of printing a titanium dioxide-containing ultraviolet-curable ink in a desired shape onto a transfer base sheet and irradiating it with ultraviolet light for a desired amount and time; a second step of printing a desired color ultraviolet-curable ink in a desired shape onto the ultraviolet-curable ink and irradiating it with ultraviolet light for a desired amount and time; a third step of printing an ultraviolet-curable varnish in a desired shape onto the desired color ultraviolet-curable ink in the desired shape and irradiating it with ultraviolet light for a desired amount and time; a fourth step of placing a transfer film on top of the transfer base sheet on which the image and varnish are printed and heating it; and a fifth step of integrating the destroyed first resin layer portion of the transfer base sheet with the substrate of the transfer film by cooling.

Description

Technical Field

[0001] The present invention relates to a transfer seal.

Background Art

[0002] Conventionally, adhesive products (image seals) have been produced in the following process.

[0003] That is, as shown in FIG. 1(a), an adhesive layer (paste layer) is provided on the upper surface of a sheet-like release material, and a surface base material (for example, paper, film, etc.) is provided on the upper surface thereof. Then, as shown in FIG. 1(b), printing is performed on the upper surface of the provided surface base material.

[0004] Then, an adhesive film such as a laminate film is coated on the printed surface base material.

[0005] Next, a blade is inserted from above the coated laminate film to the lowermost release material to cut out the printed portion (image portion).

[0006] The basic structure of the adhesive product is formed by the above process.

[0007] When printing is performed on the surface base material, it becomes heavier by the weight of the surface base material. Also, a blade is inserted to the lowermost release material to cut out the printed portion, but a margin (border) remains around the printed portion by about 1 mm provided to provide a margin for the blade. From this background, it has been easily conceived that instead of printing directly on the adhesive layer (paste layer) without printing on the surface base material and cutting out only the printed portion with a blade, it can be extracted by another method and only the printed portion (image portion) can be sealed.

[0008] However, to print directly onto an adhesive layer, the adhesive layer needs to be solidified. If the adhesive layer remains soft, the ink will not adhere. However, if the adhesive itself is solidified, the adhesive properties of the adhesive itself are lost, and it will not become an adhesive product. Therefore, it is possible to create an image by spraying a liquid UV ink, which solidifies easily when exposed to ultraviolet light, onto a soft, adhesive layer using a non-contact printing machine (inkjet printer) (Patent Document 1). [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Patent No. 6260878 [Overview of the Initiative] [Problems that the invention aims to solve]

[0010] However, in reality, the liquid UV ink erodes the adhesive layer. To solidify the UV ink, it must be exposed to UV (ultraviolet) light using an inkjet printer. At that time, the ultraviolet light also solidifies the eroded adhesive layer, causing the adhesive itself to lose its adhesive properties.

[0011] In the past, transfer stickers were manufactured by using an inkjet printer to create an image by spraying UV ink onto an adhesive layer on a base sheet, then using the printer's built-in UV irradiation device to artificially irradiate the image with ultraviolet light, solidifying the UV ink. After that, the sheet containing the image with the solidified UV ink was transferred to a laminator (a machine that covers the printed surface with film), where the film was applied to the solidified UV ink image. However, even the finished transfer stickers are naturally exposed to ultraviolet light from sunlight and other sources. As a result, over time, the adhesive layer, which has been eroded and solidified by the UV ink, gradually loses its adhesive properties, eventually becoming almost unusable as an adhesive product.

[0012] Using a thick, viscous ink would prevent the adhesive from being corroded. However, the obstacle remained: in reality, thick ink cannot be ejected by the print head of an inkjet printer.

[0013] The only method that was feasible for production was screen printing. A typical product is nail stickers. Screen printing is a type of stencil printing. A mesh screen is made with fine holes only in the necessary areas, and ink is rubbed onto it, creating an image with the ink that spills out through the holes. In the case of nail stickers, first a stencil in the shape of a nail is made. On top of this stencil, adhesive is rubbed onto the surface of a designated release agent, only in the areas specified by the stencil, to create the first adhesive layer. Individual stencils, made for each of several colors of ink, are placed on top of this adhesive layer, and each color of ink is rubbed onto the stencil. This process is repeated, and layers of each color are built up on top of the adhesive to create the image layer, and finally, an adhesive transfer film is applied to complete the sticker product. In this case, the ink is what is known as a thick, viscous ink. Even with thick ink, it can be used if it is manually rubbed onto the mesh screen in the designated areas. Conversely, if the ink is fluid in this method, the ink itself will not stay in the designated places and will not be usable. While this method of manual silkscreen printing is feasible, the process (creating stencils for each color, applying ink for each color, etc.) is time-consuming and labor-intensive. Furthermore, the cost is high (making a single stencil costs tens of thousands of yen). Therefore, silkscreen printing is not cost-effective for small quantities, and there has been an obstacle to creating small amounts of various designs as image stickers.

[0014] This invention aims to eliminate the above-mentioned drawbacks.

[0015] To achieve the above objectives, the present invention considers the basic structure of conventional adhesive products (see Figure 1) and conceived of providing a silicone oil layer as a substitute for solid surface substrates such as paper or film.

[0016] Generally, when we talk about a silicone layer, we think of release paper. It is the bottommost layer in the basic structure of conventional adhesive products (see Figure 1). Release paper is made by coating a silicone compound diluted with a solvent onto a paper base, smoothing the surface, and then drying it.

[0017] However, in this invention, the silicone layer is formed by laminating a predetermined amount of a predetermined silicone oil on top of the adhesive layer. The laminated silicone oil layer is neither smoothed nor dried. It is laminated in a way that prevents mixing with the adhesive layer. The silicone oil layer and the adhesive layer must not be mixed before printing with an inkjet printer. (The reason for this will be explained later). This laminated silicone oil layer prevents the ink from directly contacting the adhesive layer. (See Figure 2(B)) [Means for solving the problem]

[0018] The present invention provides a method for manufacturing a transfer seal, comprising: a first step of printing a titanium dioxide-containing ultraviolet-curable ink into a desired shape on a transfer base sheet comprising a sheet-like release agent, a first resin layer provided on the release agent that is removable, adhesive, and curable by ultraviolet irradiation, and a second resin layer provided on the first resin layer that has a resin capable of adsorbing titanium dioxide, using a printer device, and irradiating with ultraviolet light for a desired amount and time; a second step of printing a desired color ultraviolet-curable ink into a desired shape on the ultraviolet-curable ink using a printer device, and irradiating with ultraviolet light for a desired amount and time; and a third step of printing a desired color ultraviolet-curable ink into a desired shape on the ultraviolet-curable ink of the desired color using a printer device. The method further comprises: a third step of printing ultraviolet-curing varnish in a desired shape and irradiating it with ultraviolet light in a desired amount and for a desired time; a fourth step of placing a transfer film, which consists of a substrate, a thermoplastic layer integrated on the lower surface of the substrate that becomes fluid when heated and hardens when cooled, and a moisture-absorbing layer provided on the lower surface of the thermoplastic layer, onto the transfer base sheet on which the image and varnish are printed, applying pressure with a desired pressure to destroy the first resin layer in the portion hardened by the ultraviolet irradiation and heating with a desired heat to fluidize the thermoplastic layer; and a fifth step of integrating the destroyed first resin layer portion of the transfer base sheet with the substrate of the transfer film by cooling.

[0019] Furthermore, the first resin is characterized by being PVA (polyvinyl alcohol), and the second resin is characterized by being silicone oil.

[0020] Furthermore, the ultraviolet-curable ink containing the above-mentioned titanium dioxide is characterized by being a UV white ink.

[0021] Furthermore, the method is characterized by adding a step between the first step and the second step described above, in which a printer device further prints a UV-curable ink containing titanium dioxide onto the UV-curable ink in a desired shape, and irradiates it with UV light for a desired amount and duration.

[0022] Further, the moisture adsorption layer is characterized by being a silicone oil containing silica gel.

[0023] Also, the transfer seal of the present invention comprises a sheet-like release material, a first resin layer provided detachably on the release material, a second resin layer provided on the first resin layer and having a resin capable of adsorbing titanium oxide, an image layer formed on a first portion of the second resin layer, a varnish layer provided on the second resin so as to cover the image layer, and a transfer film provided detachably in contact with the varnish layer and integrally combining the first resin layer and the second resin portion other than those covered by the varnish layer. The first portion of the first resin has adhesiveness, and the first resin other than the first portion has no adhesive force.

[0024] Also, the first resin is PVA (polyvinyl alcohol), and the second resin is silicone oil.

[0025] Also, the resin capable of adsorbing titanium oxide is UV white ink.

[0026] Also, the manufacturing apparatus of the transfer sheet of the present invention comprises a printer device, a transfer base sheet supply means for supplying a transfer base sheet to the printer device, a transfer film supply means for supplying a transfer film, a pressure heating means for overlapping the transfer film supplied from the transfer film supply means on the transfer base sheet printed with an image by the printer device and pressing and heating the transfer base sheet and the transfer film, and a transfer seal winding means for winding a transfer seal comprising the transfer base sheet printed with the image integrated by the pressure heating means and the transfer film.

[0027] Also, it further has a cover sheet winding means for winding a cover sheet covering the adhesion surface of the transfer base sheet.

Effects of the Invention

[0028] According to the present invention, transfer stickers with an image layer can be stored for a long period of time. Furthermore, a process is obtained that allows for transfer to the target object without any problems, and the transfer can be done cleanly without any adhesive residue other than the image. [Brief explanation of the drawing]

[0029] [Figure 1] This is an explanatory diagram of a conventional transfer sticker. [Figure 2(A)] This diagram illustrates the first step of the method for manufacturing the transfer seal of the present invention. [Figure 2(B)] This is a longitudinal cross-sectional side view illustrating the transfer base sheet in the first step of the method for manufacturing a transfer seal according to the present invention. [Figure 2(C)] This is a longitudinal cross-sectional side view illustrating the transfer base sheet in the first step of the method for manufacturing a transfer seal according to the present invention. [Figure 3] This is a longitudinal cross-sectional side view illustrating the transfer base sheet in the second and third steps of the method for manufacturing the transfer seal of the present invention. [Figure 4(A)] This diagram illustrates the fourth step in the method for manufacturing the transfer seal of the present invention. [Figure 4(B)] This is a longitudinal cross-sectional side view illustrating the transfer base sheet in the fifth step of the method for manufacturing a transfer seal according to the present invention. [Figure 5(A)] This is an explanatory diagram of the sixth step in the method for manufacturing the transfer seal of the present invention. [Figure 5(B)] This is a longitudinal cross-sectional side view illustrating the transfer base sheet in the sixth step of the method for manufacturing a transfer seal according to the present invention. [Figure 6] This is a longitudinal cross-sectional side view illustrating the transfer base sheet in the seventh step of the method for manufacturing a transfer seal according to the present invention. [Figure 7] This is an explanatory diagram of the eighth step in the method for manufacturing the transfer seal of the present invention. [Figure 8(A)] This is an explanatory diagram of the ninth step in the method for manufacturing a transfer seal according to the present invention. [Figure 8(B)] This is a longitudinal cross-sectional side view illustrating the transfer base sheet in the ninth step of the method for manufacturing a transfer seal according to the present invention. [Figure 9]This is a longitudinal cross-sectional side view illustrating the layer structure of the transfer film of the present invention. [Figure 10(A)] This is a longitudinal cross-sectional side view illustrating the joint (transfer seal) of the transfer base sheet a and the transfer film b in the ninth step of the method for manufacturing a transfer seal according to the present invention. [Figure 10(B)] This is a longitudinal cross-sectional side view illustrating the joint (transfer seal) of the transfer base sheet a and the transfer film b in the ninth step of the method for manufacturing a transfer seal according to the present invention. [Figure 10(C)] This is a longitudinal cross-sectional side view illustrating the joint (transfer seal) of the transfer base sheet a and the transfer film b in the ninth step of the method for manufacturing a transfer seal according to the present invention. [Figure 10(D)] This is a schematic longitudinal cross-sectional side view of the transfer seal of the present invention. [Figure 11] Figure 10 is an explanatory plan view of the resin layer as seen from above, and is also an explanatory diagram of the 10th step in the method of using the transfer seal of the present invention. [Figure 12(A)] This is an explanatory diagram of the 11th step in the method of using the transfer seal of the present invention. [Figure 12(B)] This is a longitudinal cross-sectional side view illustrating the transfer seal in the 11th step of the method for using the transfer seal of the present invention. [Figure 13] This is a longitudinal cross-sectional side view illustrating the transfer seal in the 12th step of the method for using the transfer seal of the present invention. [Figure 14] This is a longitudinal cross-sectional side view illustrating the transfer seal in the 12th step of the method for using the transfer seal of the present invention. [Figure 15] This is a longitudinal cross-sectional side view illustrating the transfer seal in the 13th step of the method for using the transfer seal of the present invention. [Figure 16] This is a longitudinal cross-sectional side view illustrating the transfer seal in the 14th step of the method for using the transfer seal of the present invention. [Figure 17] This is a flowchart of the manufacturing machine for the transfer seals of the present invention. [Modes for carrying out the invention]

[0030] Examples of embodiments for carrying out the present invention are shown below. [Examples]

[0031] Embodiments of the present invention will be described below with reference to the drawings.

[0032] A. About the materials used

[0033] Below, we will first explain the materials used (1) to (4).

[0034] (1) UV (ultraviolet curing) ink (paint)

[0035] For example, five colors are used: W (white) ink and CMYK (cyan, magenta, yellow, black) inks. CMYK refers to one of the four colors C, M, Y, or K, or a combination of several of these colors, or a mixture of all CMYK colors.

[0036] Please note that the above colors (inks) are just examples, and other colors may be used, or only some of the CMYK inks may be used.

[0037] The first white (W) ink ejected is used as a base layer to ensure that the image formed on top is clearly displayed. Furthermore, in addition to W (white) ink, there are no particular limitations on the UV inks that can be used as the base layer, as long as they have quality characteristics suitable for the manufacturing process and contain titanium dioxide.

[0038] Furthermore, UV (ultraviolet curing) ink is used because it is necessary to mold the color image itself.

[0039] (The following is an explanation of the components contained in UV ink)

[0040] These ingredients are merely examples, and any general UV ink may be used, but a UV ink that is compatible with the manufacturing process must be selected. Using an ink with incompatible properties may lead to quality defects such as incomplete drying or premature drying.

[0041] Pigments: Color components • THFA (Tetrahydrofurfuryl Acrylate): Although it is a resin that polymerizes in response to UV (ultraviolet) light, the polymerization reaction is slow. It also acts as a diluent and has very low viscosity. • Acrylate oligomer: A resin that hardens under UV light. A resin polymer used for shaping images. • Acrylate monomers: Resin compounds that polymerize under UV light. They have a function that complements oligomers. The fluidity of the ink depends on the mixing ratio of monomers (resin compounds). • Photopolymerization initiator The UV ink in this embodiment has properties that make its polymerization and curing speeds slower than those of a normal UV ink.

[0042] (2) UV (ultraviolet curing) varnish

[0043] (The following are the ingredients contained in UV varnish)

[0044] These ingredients are merely examples, and any general UV varnish would suffice, but, as with UV inks, a UV ink suitable for the manufacturing process should be selected.

[0045] • THFA (Tetrahydrofurfuryl Acrylate): Diluent. Very low viscosity. • HDDA (Hexanediol diacrylate): A type of acrylate monomer that polymerizes when exposed to UV light. It has excellent substrate penetration, flexibility, adhesion, and weather resistance. • Photopolymerization initiator In this embodiment, the varnish is also given the property of having a slow polymerization rate. Because it does not contain oligomers, plasticization takes time.

[0046] The UV varnish mentioned above is transparent, as can be seen in the image below.

[0047] Alternatively, instead of the UV varnish mentioned above, a UV ink may be used that, when printed, smooths the top surface and does not integrate with the transfer film even when combined with the thermoplastic resin described later.

[0048] (3) Transfer base sheet a (for example, installed on a rotating drum wound in a roll)

[0049] In this embodiment, as shown in Figure 2, the transfer base sheet a consists of a sheet-like release agent, a first resin layer (adhesive layer) that is adhesive and curable by ultraviolet irradiation, which is peelably provided (laminated) on the release agent, and a second resin layer (for example, a silicone oil layer) provided on the first resin layer.

[0050] While there are no limitations on the release agent used, using a PP (polypropylene) film with a smoother surface than general release paper as the release agent allows for considerably easier removal from the first resin layer.

[0051] In particular, if the first resin layer (adhesive layer) contains moisture, it is necessary to use PP film rather than release paper. If the material is paper, it is likely to absorb moisture, which will hinder the release of the adhesive. In addition, PP film has higher flexibility and elasticity than release paper. As will be explained later in "0165", the release layer is required not only to release the first resin layer, but also to have flexibility and elasticity. However, it does not need to possess flexibility and elasticity.

[0052] Furthermore, the second resin layer is not particularly limited as long as it is a resin that contains a substance that adsorbs to titanium dioxide, but as will be described later, a silicone oil containing silicon (Si) is preferred. A liquid form is also preferred. Furthermore, the resin layer constituting the transfer base sheet a may be omitted if necessary.

[0053] The base material for the above-mentioned release agent is made of elastic paper 1. A PP (polypropylene) film is pressed onto the upper surface of the paper 1. The surface of the PP film layer 2 is quite smooth, and the PP layer 2 itself has a higher elasticity and flexibility than the release layer of the release paper.

[0054] Then, a gel-like (moisture-containing) material, such as PVA (polyvinyl alcohol), is applied as the first resin layer / adhesive (a UV-curing resin-based adhesive that hardens with UV irradiation may also be used). The applied PVA is gel-like. Furthermore, because the underlying PP film has a high degree of surface smoothness, there is little friction between the PVA and the surface of the PP film layer 2.

[0055] A silicone oil layer 4 is provided on the upper surface of the PVA layer 3. The silicone itself contained in the silicone oil layer 4 is poorly bonded. The PVA used is in gel form, and the silicone oil layer 4 is simply laminated on the PVA layer 3; the silicone oil layer 4 is not mixed with the PVA layer 3. In summary, the structure consists of a PP film layer 2, a first resin layer / adhesive PVA layer 3, and a second resin layer / silicone oil layer 4 laminated on top of the PVA layer 3.

[0056] Furthermore, if the thickness of the layered silicone oil is too thick, the W (white) ink described later will not penetrate downwards. Different W (white) inks have different quality characteristics, such as fluidity. The thickness of the layer must be suitable for the quality characteristics of the ink being used.

[0057] Furthermore, the first resin layer formed on the above-mentioned release agent is not particularly limited to PVA, as long as it is a resin that initially has adhesive properties but hardens due to ultraviolet light and eventually loses its adhesive strength.

[0058] Although silicone itself, a component of the silicone oil layer 4, is poorly adhesive, it adheres to the pigment component of the W (white) ink.

[0059] In other words, the pigment in W (white) ink is titanium dioxide, and silicon (Si), a constituent element of silicone, is adsorbed onto titanium dioxide. As will be explained in the manufacturing process and the final summary, the silicone oil layer 4 plays a role in controlling the bonding between the W (white) ink and PVA, and also in providing flexibility and balance to the image layer created by the layering of inks.

[0060] Other substances that adsorb to titanium dioxide include silica gel (SiO2·nH2O) and aluminum hydroxide (AlOH3). Although silicon is also present in silica gel, it absorbs moisture from the PVA beneath the image layer. When the moisture beneath the image layer decreases, the adhesive properties of the PVA, which acts as a binder, are lost, and the adhesion to the object to be transferred weakens. Aluminum hydroxide can react with mineral components in the moisture of the PVA, causing a "blackening phenomenon," and therefore cannot be used. For these reasons, silicone oil is the most preferable material to satisfy the quality requirements of this product.

[0061] (4) Transfer film b (for example, installed on a rotating drum wound in a roll)

[0062] In the present invention, the transfer film b consists of a base material 12, a thermoplastic layer 11 as a layer beneath the base material 12, and a moisture-adsorbing layer, such as a non-adhesive resin layer 10, provided beneath the thermoplastic layer to adsorb moisture. (See Figure 9)

[0063] When the thermoplastic material is applied to the base material 12, the thermoplastic material penetrates the surface pores of the base material 12 / PET film, the solvent components contained in the plasticizer evaporate and the plasticizer hardens, and the thermoplastic material is bonded and integrated with the base material 12 / PET film. Furthermore, a non-adhesive resin layer 10 is laminated on the thermoplastic material layer 11 of the bonded body thus created to produce the transfer film b.

[0064] This non-adhesive resin layer 10 is a silicone oil compound containing silica gel (SiO2·nH2O) in silicone oil. The silicone oil compound plays a role in causing the first resin layer (adhesive layer) / PVA layer 3 of the transfer base sheet to lose moisture. If moisture remains in the PVA layer, the loss of moisture in the PVA layer 3 causes the adhesion between the first resin layer (adhesive layer) / PVA layer 3 to be lost.

[0065] This ensures a moisture-adsorbing layer is provided, which adsorbs moisture from the PVA, thereby guaranteeing integration with the thermoplastic material, eliminating tackiness, and preventing the adhesive residue described later. Furthermore, if you use PVA with strong UV curing properties, you do not need to provide a moisture-absorbing layer.

[0066] The thermoplastic material becomes fluid when heated and hardens through natural cooling to room temperature, thereby incorporating the substrate 12, the first resin layer which has lost its adhesive properties, and the second resin layer (silicone oil layer) which originally did not adhere, and integrating them into one unit.

[0067] At this time, the thermoplastic does not erode the UV varnish layer covering the image layer. Since it does not erode the UV varnish layer 9, once the heat cools, the hardened thermoplastic and the UV varnish layer 9 can be easily separated. (See Figure 10(B))

[0068] The base material 12 is a resin film such as PET film. It requires both thermal flexibility and light transmittance. UV inks and UV varnishes cannot perform their intended function unless the material has high light transmittance. For example, base material 12 cannot be substituted with flexible polyvinyl chloride because polyvinyl chloride has poor light transmittance.

[0069] Furthermore, as will be described later, the transfer film b may be made of a material that allows the transfer film b and the transfer base sheet a to be integrated in predetermined parts, while not being integrated in other parts.

[0070] B. Manufacturing equipment

[0071] Figure 17 shows a transfer seal manufacturing apparatus 14 for manufacturing the transfer seal of the present invention.

[0072] The transfer seal manufacturing apparatus 14 comprises a printer device 15, a transfer base sheet supply means 16 for supplying a transfer base sheet a to the printer device 15, a transfer film supply means 17 for supplying a transfer film b, a pressurizing and heating means 18 for superimposing the transfer film b supplied from the transfer film supply means 17 onto the transfer base sheet a on which the image has been printed by the printer device 15, and for pressurizing and heating the transfer base sheet a and the transfer film b, and a transfer seal winding means 19 for winding up the transfer seal, which consists of the transfer base sheet a with the printed image and the transfer film integrated by the pressurizing and heating means 18.

[0073] Reference numeral 20 denotes a cover sheet winding means for peeling off and winding up a cover sheet provided to protect (cover) the adhesive surface of the transfer base sheet a.

[0074] The printer device 15, for example, comprises a suction plate 15a on which a transfer base sheet b from which the cover sheet has been peeled off, supplied from the transfer base sheet supply means 16, is placed, a print head section such as a W ink head section 15b, a CMYK ink head section 15c, and a varnish ink head section 15d, which eject W ink, CMYK ink, and varnish ink for printing on predetermined locations on the transfer base sheet b placed on the suction plate 15a, and a UV lamp section 15e.

[0075] Furthermore, the W ink head section 15b, the CMYK ink head section 15c, and the varnish ink head section 15d are arranged in the order of W ink head section 15b, CMYK ink head section 15c, and varnish ink head section 15d in the direction of travel of the transfer base sheet b, and are formed to print in this order.

[0076] In addition to having multiple print heads, there are various ink ejection methods, such as using a single print head to eject each ink.

[0077] Furthermore, the transfer base sheet supply means 16 comprises, for example, a transfer base sheet winding rotary drum 16a on which the transfer base sheet is wound, and a guide section (not shown) that guides the transfer base sheet from the transfer base sheet winding drum 15a to the printer device 15.

[0078] Furthermore, the transfer film supply means 17 comprises, for example, a transfer film winding rotary drum 17a on which the transfer film a is wound, and a guide portion (not shown) that guides the transfer film from the transfer film winding rotary drum 16a to the pressurizing and heating means 17.

[0079] Furthermore, the pressurizing and heating means 18 comprises, for example, two opposing pressurizing rollers 18a, 18a that pressurize the inserted sheet, a heating means 18b provided on at least one of the pressurizing rollers, and a guide portion (not shown) that inserts the transfer film from the transfer film supply means 17 and the transfer base sheet on which the image from the printer device 15 is printed into the two rollers while they are superimposed. The sheet inserted between the rollers is pressurized to a desired pressure and heated by the heating means.

[0080] The pressurizing and heating means is formed by a pair of rollers, but it may be made by other means, and the pressurizing means and the heating means may be separate. Furthermore, if one of the steps is omitted, or if the transfer base sheet and the transfer film can be integrated, the pressurized heating means may also be omitted.

[0081] Furthermore, the transfer seal winding means 19 comprises, for example, a transfer seal winding rotating drum 19a for winding the integrated transfer seal, and a guide portion (not shown) for guiding the transfer seal from the pressurizing and heating means 18 to the winding drum 19a.

[0082] C. About the manufacturing process

[0083] Next, I will explain the manufacturing process.

[0084] The above materials are set in the dedicated transfer film manufacturing apparatus 14 as shown in Figure 17.

[0085] Next, using this single transfer film manufacturing device, the process proceeds through steps 1 to 14 below.

[0086] In this embodiment, for example, the printer device will be described as an inkjet printer used to draw a crescent moon image.

[0087] Process 1

[0088] As shown in Figure 2(A), in the dedicated machine / printer 15, for example, an inkjet printer, UV-W (white) ink containing liquid titanium dioxide is sprayed onto the transfer base sheet a in the desired shape, for example, a crescent-shaped image, as a base layer. The sprayed W ink comes into contact with the silicone oil layer 4 at the top of the transfer base sheet a, as shown in Figure 2(B).

[0089] At this time, the silicone in the silicone oil layer 4 is adsorbed onto the titanium dioxide pigment, which is a component of the W ink. The W ink, now coated with adsorbed silicone, forms an icicle-like structure in its lower layer, which then penetrates the PVA 3 layer. As shown in Figure 2(C), the silicone adsorbs onto the W ink, creating a first layer 6 where the W ink remains in the silicone oil layer 4, and a second layer 7 where the W ink reaches the PVA 3 layer and remains in the PVA layer 3. (See Figure 2(C))

[0090] Furthermore, some W ink remains at the boundary between the first layer 6 and the second layer 7. (See Figure 2(C))

[0091] At this time, the W ink is coated with silicone and does not come into direct contact with the PVA. In other words, the silicone acts as an outer layer for the W ink, preventing it from coming into direct contact with the PVA.

[0092] The W ink must not come into direct contact with the PVA, and the silicone ensures this. The reason for this will be explained in the final summary.

[0093] Since silicone adheres to the W ink, most of the W ink is fixed to the silicone oil 4 layer of the transfer base sheet a, thereby forming a first layer 6 consisting of W ink 5 and silicone oil 4. The fixed W ink 5 then forms the base for the W ink layer 5, CMYK layer 8, and varnish layer 9 that are laminated in subsequent processes (see Figure 3).

[0094] The W ink, once it reaches the PVA layer 3, is coated with silicone and penetrates the PVA layer 3. However, the silicone adsorbed on the pigment acts as a barrier, preventing the W ink itself from directly contacting the PVA.

[0095] PP layer 2 does not absorb W ink at all. Therefore, W ink only reaches as far as PVA layer 3 (Figure 2(C)).

[0096] Process 2

[0097] The inkjet printer 13 further ejects the W ink in a desired shape, such as the crescent shape, to overlay it onto the W ink layer 5. (See Figure 3)

[0098] The reason for applying an overcoat is that the amount of W ink itself that penetrates the PVA layer 3 and the silicone oil layer 4 is small. There is a limit to the amount of W ink that can penetrate the PVA layer 3 and the silicone oil layer 4. If the amount of W ink itself remaining in the PVA layer 3 and the silicone oil layer 4 is small, the "white" color will be weak. If the "white" color is weak, it will be affected by the color of the object 13 to which the transfer sticker is applied. For example, if the object 13 is black, if the "white" on top of the black is weak, the black of the object 13 will show through, and the colors created by C / blue, M / red, and Y / yellow on top of the white will appear darker. Therefore, it is necessary to apply an overcoat to the above W ink layer 5 to establish the "white" color.

[0099] Depending on the color of the object to be transferred 13, the top coat of W ink 5 may be omitted on top of the W ink 5 layer.

[0100] Furthermore, in steps 1 and 2 described above, ultraviolet light is artificially and continuously irradiated in a desired amount by the UV lamp unit 15e. Also, in the subsequent steps up to step 7, ultraviolet light is artificially and continuously irradiated in a desired amount by the UV lamp unit 15e. Furthermore, instead of continuous irradiation, irradiation may be performed only when necessary, for the desired duration.

[0101] Process 3

[0102] As shown in Figure 3, UV (ultraviolet) light is continuously irradiated onto the topcoat W ink layer 5 to initiate the polymerization and curing of the resin / oligomer contained in the W ink. At this time, the irradiated UV light also reaches the first layer 6 beneath the W ink layer 5.

[0103] However, due to the W ink layer 5, the CMYK color layer 8 built on top of it, and the varnish layer 9 built on top of the CMYK color layer, layer 6 is hidden from UV irradiation. Therefore, the amount of UV irradiation is naturally considerably reduced. Even a small amount of UV irradiation slows down the curing of layer 6.

[0104] Furthermore, the silicone outer layer surrounding the W ink in layers 6 and 7 hardly changes in properties even when exposed to ultraviolet light. Instead of altering its properties, it actually possesses UV resistance due to its UV absorption properties. Therefore, layer 6 maintains its flexibility due to its delayed curing. Indeed, the silicone oil layer 4 plays a crucial role in creating a flexible base for the W ink layer 5, CMYK layer 8, and varnish layer 9 that are laminated in subsequent processes (see Figure 3).

[0105] Furthermore, while the W ink reaches the second layer 7, very little UV (ultraviolet) light penetrates it. Even the slightest amount of UV light is absorbed by the outer silicone layer. Additionally, PP2 and the base material 11 paper are present at the bottom of layer 7. Since the base material paper is not transparent, it transmits very little UV light. Therefore, the UV light transmitted from the bottom of layer 7 has almost no effect. As a result, the degree of curing of the W ink that reaches the second layer 7 is weak.

[0106] Furthermore, the icicle-shaped W ink that reaches the second layer 7 acts as a root connecting the W ink layer 5, the first layer 6, and the second layer 7. As a result, even if there is poorly adhering silicone in the first layer 6, the W ink 5 hardens upon UV irradiation, causing the W ink 5 layer, the first layer 6, and the second layer 7 to become one unit, and these layers do not peel off (see Figure 3).

[0107] Step 3 is only possible by using UV ink, which hardens when exposed to UV (ultraviolet) light.

[0108] Specifically, by ejecting liquid W ink using the inkjet printer 15, the penetrating properties of this ink are utilized to reach the PVA layer 3, and the curing of the UV ink by UV light allows the W ink layer 5, the first layer 6, and the second layer 7 to be bonded and integrated.

[0109] Furthermore, the surface of the W ink layer 5 becomes uneven when irradiated with UV light (UV ink has the property of causing surface unevenness) (see Figure 3).

[0110] Process 4

[0111] As shown in Figure 4, CMYK ink, which is a UV-curable resin of a desired color, is ejected from the CMYK ink head section 15c of the printer device 15 onto the W ink layer 5 that has begun to polymerize and harden, to print, for example, a crescent-shaped image layer. In this case, ultraviolet light is being irradiated, but it does not have to be continuous; it may be irradiated only when necessary and for the desired duration. Furthermore, the CMYK ink head unit 15c rotates each drum as needed to move the transfer base sheet a so that an image can be formed at a desired position on the transfer base sheet a.

[0112] Process 5

[0113] As shown in Figure 4(B), ultraviolet light is also irradiated onto this CMYK ink layer 8. As a result, polymerization and curing of the resin / oligomer contained in the CMYK ink begins. At this time, the surface of the UV-irradiated CMYK ink layer 8 also becomes uneven (see Figure 4(B)).

[0114] Process 6

[0115] As shown in Figure 5(A), UV varnish is ejected from the varnish inkhead 15d of the printer 14 to cover the UV / CMYK ink image layer 8, which has begun to polymerize and harden. At this time, the varnish completely covers, for example, the W ink layer 5 and the CMYK layer 8 above it. (See Figure 5(B)) The UV varnish mentioned above is also in liquid form.

[0116] Furthermore, the varnish ink head unit 15d is used to rotate the drums as needed to move the transfer base sheet a, so that varnish can be formed at the desired position on the transfer base sheet a.

[0117] The varnish described above extends in an icicle-like manner, permeating the silicone oil layer 4 (first resin layer) and the PVA layer 3 (second resin layer) at the outer edge of the image layer (the umbrella portion when viewed in cross-section) (see Figure 5(B)).

[0118] Process 7-1

[0119] As shown in Figure 6, the varnish layer 9 is also irradiated with ultraviolet light. In this case, although ultraviolet light is irradiated, it does not have to be continuous; it may be irradiated only when necessary and for the desired duration.

[0120] Furthermore, following steps 1 and 2 above, artificial ultraviolet irradiation is continuously performed in steps 3 through 7. Furthermore, instead of continuous irradiation, irradiation may be performed only when necessary.

[0121] UV (ultraviolet) light also reaches the varnish that has permeated the silicone oil layer 4 and PVA layer 3 at the outer edge of this image layer (the umbrella-shaped part when viewed in cross-section), and the varnish in this area also hardens. The varnish that has reached and hardened up to the silicone oil layer 4 becomes a root connecting the varnish layer 9, the silicone oil layer 4, and the PVA layer 3, and as a result, the varnish layer 9 bonds the silicone oil layer 4 and the PVA layer 3 together.

[0122] The silicone oil layer 4 and the varnish layer 9 are the same as in step 3 above, but step 7-1 is only possible if a UV varnish that hardens when exposed to UV (ultraviolet) light is used.

[0123] Process 7-2

[0124] Polymerization and hardening also begin in varnish layer 9, but since the varnish does not contain oligomer resin and has poor plastic reaction, the hardening speed is slow.

[0125] The main component resin of UV varnish has the property of generating bubbles when exposed to ultraviolet light.

[0126] Here, we will explain UV inks and UV varnishes.

[0127] (1) Characteristics of UV ink

[0128] UV inks always contain resin / oligomers. This is because the resin / oligomers are necessary to mold the image. These resin / oligomers have the characteristic of creating an uneven surface when molded by UV irradiation.

[0129] (2) The necessity of varnish layer 9

[0130] The surface of the W ink layer 5 also becomes uneven when exposed to UV light, but it is then overcoated with CMYK ink. However, the surface of the overcoated CMYK ink layer 8 also becomes uneven when exposed to UV light. A varnish layer 9 is provided to compensate for the drawback of the uneven surface. UV varnish also contains resin components, but a UV varnish that does not contain resin / oligomers with little plasticizing effect is used. If it does not contain resin / oligomers, the UV varnish itself has high fluidity, and even if the varnish layer 9 is exposed to UV light, the surface is less likely to become uneven, resulting in a smoother surface.

[0131] Furthermore, as will be explained later, the UV varnish is also intended to prevent erosion by the thermoplastic material provided on the transfer film. If the surface of the CMYK layer 8 becomes uneven due to UV irradiation, the thermoplastic material will penetrate into the uneven areas, reducing the peelability between the image layer and the transfer film. However, the surface of the UV varnish is less likely to become uneven and has high smoothness, so the peelability between the image layer covered by the varnish and the transfer film does not decrease. (See Figure 6)

[0132] (3) Components of UV varnish (very high transparency)

[0133] The main components of Varnish 9 are THFA and HDDA. THFA acts as a diluent and is also found in W (white) ink and CMYK inks. HDDA has excellent flexibility, adhesion, and substrate penetration properties. As will be discussed later, flexibility and adhesion are required for the entire image layer. HDDA contributes to the flexibility and adhesion of the image layer.

[0134] (4) Bubble formation

[0135] Both W ink, CMYK ink, and UV varnish generate bubbles when exposed to UV (ultraviolet) light. These bubbles, once embedded in the image, detract from the image and are therefore undesirable. However, bubble generation is minimal in varnish layer 9.

[0136] Furthermore, the air bubbles can be pushed to the outside of the image layer by the pressurizing means described later, thereby eliminating the air bubbles in the image.

[0137] Process 8

[0138] As a result of continued UV irradiation, the PVA layer 3 in the area without an image above it becomes crosslinked (see Figure 7). Furthermore, the surface of the PP layer 2 is highly smooth, and there is little friction between the surface of the PP layer 2 and the gel-like PVA, so the PVA layer 3 in the area without an image above it easily becomes crosslinked.

[0139] When cross-linked, as shown in Figure 7, the PVA itself becomes uneven in cross-section towards the silicone oil layer 4. Furthermore, continuous irradiation with ultraviolet light causes the cross-linked PVA to harden. As hardening progresses, the moisture content of the PVA decreases. A PVA with reduced moisture content has reduced adhesive strength. If UV irradiation continues continuously, the PVA eventually loses its adhesive properties.

[0140] It should be noted that the term "adhesion" as used here does not refer to the complete absence of tackiness. Rather, it does not include weak adhesive strength such that when a transfer film simply placed on top of the transfer base film is peeled off, the PVA resin also adheres to the transfer film and is peeled off together.

[0141] In areas without an image layer, the UV varnish penetrates into the PVA layer 3 beneath the varnish coating, making crosslinking (binding of PVA molecules) difficult. Therefore, crosslinking of the PVA in that area does not progress. (See Figure 7)

[0142] Process 9

[0143] The transfer base sheet a, having completed the steps up to step 8 described above, is moved to the pressurizing and heating means 18 by rotating each of the rotating drums, and the transfer film b is placed on top of the transfer base sheet a (see Figure 8(A)). Specifically, the non-adhesive resin layer / silicone oil compound 10 ("0064", see Figure 9) provided on the lower surface of the substrate 12 of the transfer film b is brought into contact with the transfer base sheet a, which includes the image layer.

[0144] Then, by rotating each of the above-mentioned rotating drums, the overlapping transfer base sheets a and transfer film b are inserted between the pair of pressure rollers, and immediately after contact, a predetermined pressure, for example, 5 kg / cm², is applied from above the transfer film b substrate 12. 2 Apply pressure. This high pressure first destroys the hardened PVA layer outside the varnish coating, in the area without the image layer, from the top surface. The destroyed PVA layer 3 is then mixed with the silicone oil layer 4. (See Figure 10(A))

[0145] It should be noted that "destruction" in this context does not mean completely destroying the hardened PVA; it is sufficient if the destruction is limited to the extent that gaps or cracks can be formed within the hardened PVA, allowing the fluidized thermoplastic material to penetrate. Therefore, the specified pressure mentioned above only needs to be sufficient to cause destruction within the specified range.

[0146] In this mixed layer / 3+4, silica gel (SiO2·nH2O), a component of the silicone oil compound 10, is forced under high pressure into the PVA through the aforementioned broken gaps. The forced silica gel absorbs the moisture remaining in the broken PVA. As a result, the mixed layer / 3+4 of the broken PVA and the silicone oil layer loses almost all adhesive properties. (See Figure 10(B))

[0147] Simultaneously, by passing the mixture between heated rollers, a desired temperature, for example 80°C, is applied to the mixed layer to plasticize the thermoplastic material of the transfer film b. The 80°C heat causes the thermoplastic material 11, which was located behind the silicone oil compound layer 10, to fluidize. The fluidized thermoplastic material 11 flows into the mixed layer / 3+4 of the destroyed PVA layer 3 and silicone oil layer 4, incorporating the mixed layer and plasticizing it into a single unit. At this time, as described above, the fluidized thermoplastic material 11 does not erode the UV varnish layer 9 covering the highly smooth image layer. (See Figure 10(C))

[0148] As mentioned in "0063", the substrate 12 / PET film and the thermoplastic 11 are already integrated when the transfer film b is made, and strictly speaking, the mixed layer / 3+4 and the PET film / 9+10+11 are integrated by step 9.

[0149] The desired temperature mentioned above refers to the temperature at which the thermoplastic material 11 becomes fluid.

[0150] The thermoplastic material 11 mentioned above is, for example, triethylene glycol divinyl.

[0151] Alternatively, instead of using a thermoplastic, there is a method that uses a swelling agent to integrate the transfer base sheet a and the transfer film b. This method utilizes the small amount of adhesive remaining inside the PVA even after the PVA layer has hardened. In other words, a swelling agent is applied to the transfer film b instead of a thermoplastic, and when it comes into contact with the PVA to retain moisture, high pressure is applied, causing the PVA to break down and the small amount of adhesive material remaining inside to be exposed. This adhesive force is then used to transfer the broken-down remaining PVA to the transfer film. However, with this method, some adhesiveness may remain in areas of the transfer film where there is no image layer, which carries the risk of defects such as adhesive residue occurring on the object to be transferred when transferring the image to the object.

[0152] Therefore, in the present invention, the transfer film b is composed of a thermoplastic material and a silicone oil compound, and both materials are sent onto the transfer base sheet a and reacted. First, the silicone oil compound removes any remaining moisture in the PVA, eliminating its adhesive properties. Then, the thermoplastic material integrates the substrate 11 with the PVA that has lost its adhesive properties, thus preventing the generation of adhesive residue.

[0153] Furthermore, if there is a means to integrate the transfer film and the second resin portion without integrating them with the UV varnish layer (or a corresponding layer), this means may be used to integrate them.

[0154] Transfer film b includes: a) A silicone oil compound layer 10 is provided on the bottom surface (the contact surface with the transfer base sheet a), and a thermoplastic layer 11 is provided on the back of the silicone oil compound. (i) Possesses flexibility (thermal expansion and contraction) to conform to the surface shape of the silicone oil layer 4 and the varnish layer 9. (c) The film substrate has high light transmittance. Ideally, the product should meet the three requirements outlined above.

[0155] There is another purpose to applying high pressure and high heat. When pressure is applied from above the transfer film covering the image layer, the three-dimensional image layer and the transfer film develop an uneven surface relationship. When a heat-stretchable transfer film is placed over an image layer whose three-dimensionality has been increased by applying a thick layer of ink and varnish, and high pressure and high heat are applied from above, the image layer and the transfer film adhere tightly due to the large difference in height between the uneven surfaces. Subsequently, by rotating each of the aforementioned rotating drums, the transfer film is pulled out from the rotating rollers and cools naturally to room temperature. As the heat dissipates and the transfer film shrinks, the transfer film grips the image layer even more tightly. This increased gripping relationship between the uneven surfaces enhances the degree of adhesion between the image layer and the transfer film. Under this highly adhesive uneven surface relationship, the peelability between the image layer and the transfer film weakens.

[0156] When applying an image to an object, the first step is to peel sheet a from the release agent to expose the adhesive layer beneath the image layer. If the adhesion between the image layer and the transfer film is weak, the image layer will detach from the transfer film before the adhesive layer beneath it is exposed during this step.

[0157] To avoid these problems, it is necessary to weaken the peelability between the image layer and the transfer film, that is, to strengthen the adhesion between the image layer and the transfer film.

[0158] While some suggest making the transfer film itself tacky to strengthen the adhesion between the image layer and the transfer film, I disagree. If the adhesion is too strong, it becomes difficult to separate the image layer from the transfer film. Furthermore, adhesives with weak adhesion are prone to degradation, and degraded adhesives can undergo cohesive failure, leaving a high probability of causing defects such as adhesive residue.

[0159] Both UV inks and UV varnishes produce bubbles when exposed to ultraviolet light. Furthermore, this high-pressure process is performed before the UV ink or other materials have completely cured, in order to eliminate these air bubbles. This is to push any bubbles that have formed towards the edges of the image layer. (See Figure 11)

[0160] Pressure is, a) Can destroy cross-linked and hardened PVA i) The silicone oil compound provided on the transfer film Silica gel is pressed into the damaged PVA layer. (c) To the extent that the above "0156" failure is avoided. If the above three conditions are met, then 5 kg / cm³ 2 You don't need to be so concerned about it.

[0161] Heat is, a) Can make thermoplastics fluid. (i) Transfer film can be thermally expanded (c) Do not dissolve the PP which is the release agent for sheet a. If the above three conditions are met, there is no need to insist on 80°C.

[0162] The UV irradiation from the inkjet printer ends when sheet a and film b are placed on top of each other and heat and pressure are applied.

[0163] From step 1 / ink ejection to step 2 / overlapping sheet a and film b and applying heat and pressure, a) Amount of ultraviolet light emitted from the printer i) Quality characteristics of inks and varnishes (c) Amount of silicone oil in sheet a e) Time for each process As described above, the quantity, quality characteristics, and time are determined through mutual calculations. If this relationship is disrupted, quality cannot be guaranteed. Therefore, the processes performed by the printer and the laminator must be carried out continuously and seamlessly. Consequently, instead of a division of labor between a flatbed printer and a laminator, a roll printer with laminating capabilities is required. (See Figure 17)

[0164] In the second layer 7, the PVA does not crosslink or harden. The amount of UV (ultraviolet) light that penetrates is too small due to the laminated varnish layer 9, CMYK layer 8, W layer 5, and first layer 6. Heat is also not easily transferred, and the properties of the PVA itself do not change even when high pressure is applied. The high pressure further smooths the surface of the varnish layer 9. Because the varnish layer 9 has high fluidity and slow UV curing, further smoothing is sufficiently possible. When the surface of the varnish layer 9 is smoothed, the airtightness with the transfer film b is improved.

[0165] When high pressure is applied, the release agent PP (polypropylene film) layer 2 on the upper layer of the base material 1 of sheet a first takes on the role of cushioning, as described in "0051".

[0166] Next, the first layer 6 takes on the role of a cushion. The silicone contained in layer 6 is flexible itself. In addition, the silicone clinging to the W (white) ink absorbs ultraviolet light, slowing down the solidification of the W (white) ink in layer 6. The W (white) ink, whose solidification is delayed, remains flexible.

[0167] Due to the presence of the PP (polypropylene film) layer 2 and the W (white) ink layer 6, which is made flexible by silicone, a high pressure of 5 kg / cm² is applied from above. 2 Even when subjected to this, the W ink layer 5, CMYK ink layer 8, and varnish layer 9 will not be damaged. Since they are not damaged, there will be no "image layer cracking" or "image layer splitting."

[0168] The time required for each step from 1 to 9 must be constant. To reiterate, if all conditions—including time, ink quality characteristics, and UV exposure amount—are not met, there is a high probability of quality defects. Therefore, a consistent process using dedicated machinery is necessary to precisely maintain the time intervals for each step. (See Figure 17)

[0169] Furthermore, other integration methods may be used as long as the transfer film and the resin are integrated.

[0170] Furthermore, the high-pressure process may be omitted. Also, if it can be integrated, the high-temperature process may be omitted by using other methods.

[0171] Step 10

[0172] The transfer seal, consisting of the transfer film b and transfer base sheet a, which are created and joined in steps 1 to 10 above, is moved by rotating each rotating drum and wound up by the transfer seal winding drum, completing the product as shown in Figure 10(D).

[0173] Then, in order to actually transfer the image of the transfer sticker onto the object to be transferred, the necessary portion, including the image, is cut out from the transfer sticker, as shown in Figure 11.

[0174] Step 11

[0175] As shown in Figures 12(A) and 12(B), the release agent is peeled off the transfer seal, leaving only the necessary portion. At this time, the PVA layer 3, silicone oil layer 4, second layer 7, first layer 6, W layer 5, CMYK layer 8, and varnish layer 9 are transferred to film b.

[0176] In other words, the surface of PP layer 2 is very smooth. Therefore, the cross-linked PVA material in PP layer 2 and PVA layer 3 repel each other and want to delaminate from one another.

[0177] Furthermore, the PVA contained in the second layer 7, where ultraviolet light has difficulty penetrating, does not crosslink or harden. Also, since PVA is originally gelled, if the release agent is PP (polypropylene film), peeling off the PVA at the bottom of the second layer 7 is easy. If the release agent is paper, there is a high probability that the moisture in the gel will be adsorbed by the paper, making it difficult to peel off the PVA.

[0178] Furthermore, in areas without an image layer, the mixed layer of the hardened and fractured PVA layer 3 and the silicone oil layer 4, which has lost its adhesive properties, is plasticized and integrated by the thermoplasticizer of the transfer film. Adhesion is also lost due to the silicone compound of the transfer film. Therefore, this mixed layer can be easily peeled off the release agent PP (polypropylene film) at the bottom of the PVA layer 3. (See Figure 12(B))

[0179] Furthermore, since the mixed layer is plasticized and integrated after completely losing its adhesive properties, there is no risk of defects such as "adhesive residue" occurring on the transfer target.

[0180] Step 12

[0181] As shown in Figures 13 and 14, the transfer film b obtained in step 12 is placed on the target portion of the transfer object 13 to which the image is to be attached, and pressure is applied from above the film b.

[0182] The object 13 to which the above image is to be attached is hard, and adhesion is possible as long as the surface to which it is attached is not specially treated. (For example, the back surface of an Apple iPhone has a special treatment and cannot be adhered to.)

[0183] As shown in Figure 14, when pressed, the uncured and adhesive PVA in the second layer 7 is pushed out, and only the image adheres to the transfer target object 13. The PVA below the image layer does not undergo crosslinking or curing because ultraviolet light does not easily reach it, and therefore has strong adhesive properties, resulting in strong adhesion to the transfer target object. In contrast, the PVA portion without the image layer, as mentioned above, has almost completely lost its adhesive strength and does not have strong adhesion to the object to be transferred.

[0184] Step 13

[0185] When the transfer film b, which has been pressed onto the object to be transferred 13, is peeled off, as shown in Figure 15, the second layer 7, the first layer 6, the W layer 5, the CMYK layer 8, the varnish layer 9, and a portion of the PVA layer 3 and silicone oil layer 4 (inside the base of the varnish 9) protected by the base of the varnish 9 are transferred to the object to be transferred 13.

[0186] The hardened varnish has a highly smooth surface, and this smoothness repels the thermoplastic material that attempts to corrode it. As described in "0121", the roots of varnish 9, which are formed by impregnating the varnish layer 9 with the silicone oil layer 4 and the PVA layer 3 and bonding the varnish layer 9, silicone oil layer 4, and PVA layer 3, also have a highly smooth surface. These roots act as a barrier, and the thermoplastic material cannot corrode the inside of the roots, including the roots themselves. Therefore, only the mixed layer of the hardened and destroyed PVA layer 3 and silicone oil layer 4, which has lost its adhesive properties, is plastically integrated with the transfer film b by the thermoplastic material 11, except for the area outside the roots. Consequently, the separation of the PVA 3 and part of the silicone oil layer 4 (the inside of the roots of varnish 9), which are protected by the varnish layer 9 and the roots of varnish 9, is easy.

[0187] Step 14

[0188] Furthermore, the bonding between the varnish layer 9 and the transfer film b is only achieved through a strong pressure bond due to the interlocking surface, as described in "0155" above. In contrast, the adhesion between the second layer 7 and the transfer target object 13 is a strong adhesive state, as described in "0183". The PVA, which retains its adhesive strength and is extruded from the second layer 7, spreads not only directly beneath the second layer 7 but also to the lower part of the edge of the second layer 7. The adhesive strength of the latter overwhelmingly surpasses the pressure bond of the former. Therefore, the transfer of the second layer 7, the first layer 6, the W layer 5, the CMYK layer 8, the varnish layer 9, and a portion of the PVA 3 + silicone oil layer 4 (inside the base of the varnish 9) protected by the base of the varnish 9 to the transfer target object is easily achieved. (See Figure 15)

[0189] Based on the above, film b is easy to peel off the object to be transferred.

[0190] To summarize the comparison of adhesive strength in the peeling parts, The order is (inside the root of varnish 9 and the object to be transferred 13) > (outside the root of varnish 9 and the object to be transferred 13) > (film b, which is a plasticized and integrated version of the above mixed layer, and the object to be transferred 13).

[0191] Peeling progresses in order of increasing adhesive strength, and as a result, only the layers necessary as image layers—the second layer 7, the first layer 6, the W layer 5, the CMYK layer 8, the varnish layer 9, and a portion of the PVA layer 3 + silicone oil layer 4 protected by the base of varnish 9 (inside the base of varnish 9)—can be transferred to the object 13 (see Figure 16).

[0192] The above steps, • It must be carried out precisely at the required predetermined time intervals. • It is necessary to apply specific high temperatures and high pressures continuously and at a constant rate. • It is necessary to maintain a uniform amount of UV irradiation. • Maintain productivity to ensure profitability

[0193] Based on the four points mentioned above, it is more preferable to perform the entire process in a single dedicated machine. (See Figure 17)

[0194] Furthermore, each material used—ink, varnish, and sheet—must be of a quality that can be precisely achieved throughout this process (for example, inks and varnishes that react precisely to the amount of UV irradiation and cure on time, sheets laminated with PVA and silicone oil that crosslink and cure precisely to the amount of UV irradiation, and PET films equipped with thermoplastics and silicone oil compounds. If even one of the machines, processes, or materials is lacking, the final product with satisfactory quality cannot be obtained).

[0195] Finally, let's summarize the role of the silicone oil layer 4.

[0196] First, as explained in "0104," it plays the role of creating a flexible base for the image layers: the W ink layer 5, the CMYK ink layer 8, and the varnish layer 9. Without this role, the image layers as a whole would be rigid, and the high pressure of 5 kg / cm² applied after covering with transfer film b would be too high.2 The image layer will be destroyed. The destroyed image layer is highly likely to exhibit symptoms such as cracking or fissures. (As described in "0059," "0166," and "0167")

[0197] Next, it also plays a significant role in preventing contact between the W (white) ink and the PVA. The adhesive properties of the PVA, which are not corroded by the UV ink, are maintained. Because an adhesive adhesive (PVA) is present, the layers necessary as the image layer—the second layer 7, the first layer 6, the W layer 5, the CMYK layer 8, the varnish layer 9, and a portion of the PVA 3 + silicone oil layer 4 (inside the base of the varnish 9) protected by the base of the varnish 9—can be strongly and continuously adhered to the object to be transferred 13. If the silicone oil layer 4 is omitted and the W ink is sprayed directly onto the PVA layer 3, and by chance the image layer is formed in the above process and attached to the object to be transferred 13, the adhesive strength to the object to be transferred 13 will be considerably weaker, and the time the adhesion can be maintained will be shorter.

[0198] The white (W) ink sprayed directly onto the PVA layer 3 bonds with the PVA → the bonded W ink hardens upon UV irradiation → the hardening process of the W ink also hardens the adhesive properties of the bonded PVA. As a result, it loses its adhesive strength to the transfer target object 13.

[0199] The sheets a and b created in the above steps 1 to 10 remain joined and are continuously exposed to natural UV (ultraviolet) light, such as sunlight. With continuous exposure to UV light, the UV ink that forms the image layer eventually hardens completely. At this point, the adhesive strength of the bonded PVA is also completely lost. The joined sheet a and sheet b (transfer sticker) that has lost its adhesive strength is completely unusable. In order to store the created sheets a and sheet b in their joined state for a long period of time and to maintain strong adhesion to the transfer target object 13, it is necessary to prevent the adhesive strength of the glue material at the bottom of the image layer from being lost.

[0200] Mixing silicone with an adhesive and applying it as a single layer to base sheet a is also not permitted. The silicone will disperse within the adhesive, resulting in insufficient adsorption with the UV ink containing titanium dioxide. UV ink with insufficient silicone adsorption is more likely to bond with the adhesive. Increasing the amount of silicone mixed in will increase the amount of silicone dispersed within the adhesive, inhibiting the crosslinking of PVA. Furthermore, using UV ink mixed with adhesives such as PVA is also not permitted. Since the UV ink itself hardens in response to ultraviolet light, the adhesive properties of the mixed adhesive are lost.

[0201] The silicone oil layer 4 is also essential for the following functions.

[0202] To establish the required quality, it is essential to crosslink and cure the adhesive material in areas other than the image layer. (As described in "0138" to "0146") If the silicone oil layer 4 is not provided on top of the PVA layer 3, the transfer film b and PVA will immediately adhere when they come into direct contact. If they adhere immediately, crosslinking and curing will not proceed easily. This is because if the adhesive material / PVA adheres to the transfer film b first, the adhesive force will prevail, making it difficult for the PVA itself to crosslink in the PVA layer 3. The silicone oil layer 4 is essential for crosslinking and curing.

[0203] In conclusion, it is essential to provide a separate silicone oil layer 4 on top of the PVA layer 3.

[0204] Given the important role it plays, it would be unreasonable to consider the silicone oil layer 4 as part of the adhesive layer (PVA layer 3), or as being the same as the adhesive layer (PVA layer 3). [Explanation of Symbols]

[0205] 1 Base material (paper) layer 2 PP layers 3 PVA layers 4. Silicone oil layer 5 W (white) ink layer 6. The First Layer 7. The second layer 8 CMYK ink layers 9 varnish layers 10 Silicone oil compound layer 11 Thermoplastic / Triethylene glycol divinyl layer 12. Substrate (PET film) layer 13. Object to be transferred 14 Transfer Seal Manufacturing Equipment 15 Printer device 15a Mounting platform 15b W Inkhead 15c CMYK Inkhead 15d Varnish Inkhead 15e UV lamp section 16 Transfer base sheet supply means 16a Transfer film winding rotary drum 17 Transfer film supply means 17a Transfer film winding rotary drum 18 Pressurized heating means 18a Pressure roller 18b Heating means 19 Transfer seal winding means 19a Transfer sticker winding rotary drum 20 Cover sheet winding means a. Transfer base sheet (paper 1 + PP film 2 + PVA 3 + silicone) Oil 4) b. Transfer film (PET film 12 + thermoplastic / triethylene glycol) Divinyl 11 + Silicone Oil Compound 10

Claims

1. A transfer base sheet comprising a sheet-like release agent, a first resin layer that is removable, adhesive, and hardens upon irradiation with ultraviolet light, and a second resin layer provided on the first resin layer having a resin capable of adsorbing titanium dioxide, The first step involves using a printer to print a titanium dioxide-containing UV-curing ink into a desired shape, and simultaneously irradiating it with UV light for a desired amount and duration. The second step involves printing the desired color of UV-curable ink in the desired shape onto the above UV-curable ink using a printer device, and irradiating it with UV light for a desired amount and duration. A third step involves printing a UV-curing varnish in the desired shape onto a UV-curing ink of the desired color and shape using a printer, while simultaneously irradiating it with UV light for a desired amount and duration. A transfer film comprising a base material, a thermoplastic layer integrally provided on the lower surface of the base material which becomes fluid when heated and hardens when cooled, and a moisture-absorbing layer provided on the lower surface of the thermoplastic layer, The above image and varnish are printed on the above transfer base sheet, and pressure is applied with a desired pressure to destroy the first resin layer in the portion hardened by the above ultraviolet irradiation, and the thermoplastic layer is heated with a desired heat to fluidize the above thermoplastic layer. A fifth step involves cooling to integrate the destroyed first resin layer portion of the transfer base sheet with the substrate of the transfer film. A method for manufacturing transfer seals, characterized by being made of [a certain type of material].

2. The method for manufacturing a transfer seal according to claim 1, characterized in that the first resin is PVA (polyvinyl alcohol) and the second resin is silicone oil.

3. The method for manufacturing a transfer seal according to claim 1, characterized in that the ultraviolet-curable ink containing the above-mentioned titanium dioxide is a UV white ink.

4. The method for manufacturing a transfer seal according to claim 1, characterized in that, between the first step and the second step, a step is added in which a ultraviolet-curable ink containing titanium dioxide is further printed on the ultraviolet-curable ink in a desired shape using a printer device, and ultraviolet light is irradiated for a desired amount and time.

5. The method for manufacturing a transfer seal according to claim 1, characterized in that the above-mentioned moisture adsorption layer is a silicone oil containing silica gel.

6. A sheet-like release agent, a first resin layer provided on the release agent in a removable manner, and a second resin layer provided on the first resin layer having a resin capable of adsorbing titanium dioxide, The second resin layer includes an image layer formed on the first portion of the second resin layer, and a varnish layer provided on the second resin so as to cover the image layer. The transfer film is provided in peelable contact with the above-mentioned varnish layer, and comprises a first resin layer and a second resin portion that are not covered by the above-mentioned varnish layer, and is integrated with the above-mentioned varnish layer. A transfer sticker characterized in that the first portion of the first resin described above is adhesive, and the portion of the first resin other than the first portion does not have adhesive properties.

7. The transfer seal according to claim 6, characterized in that the first resin is PVA (polyvinyl alcohol) and the second resin is silicone oil.

8. The transfer seal according to claim 6, characterized in that the resin capable of adsorbing the above-mentioned titanium dioxide is UV white ink.

9. Printer device and The printer device includes a transfer base sheet supply means for supplying a transfer base sheet, A transfer film supply means for supplying a transfer film, The above-mentioned printer device prints an image onto the above-mentioned transfer base sheet, onto which a transfer film supplied from the above-mentioned transfer film supply means is placed, and a pressurizing and heating means pressurizes and heats the transfer base sheet and the transfer film. A transfer sheet manufacturing apparatus characterized by comprising a transfer seal winding means for winding up a transfer seal consisting of a transfer base sheet on which the above image has been integrated by the pressurizing and heating means and the transfer film.

10. The transfer seal manufacturing apparatus according to claim 9, further comprising a cover sheet winding means for winding up a cover sheet that covers the adhesive surface of the above-mentioned transfer base sheet.

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