JP2012035580A - Metal body transfer decorating method and press transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal body transfer decorating method and press transfer device, capable of achieving good decoration by a transfer sheet to metal products.SOLUTION: The metal body transfer decorating method which transfers a transfer layer 8 on a surface of a metal body 9, includes: a process to arrange the transfer sheet 1 on the surface of the metal body 9 so that a periphery of the transfer sheet 1 may be located in a periphery of the metal body 9; and a process to perform pressing the transfer sheet 1 while heating it toward the surface of metal body 9, and has used as the transfer sheet 1, a sheet wherein the transfer layer 8 is laminated on a base sheet 2, and adhesive force of the base sheet 2 and the transfer layer 8 is set more greatly than the adhesive force in other regions of the base sheet 2 in at least one side in the periphery of the base sheet 2.

Description

  The present invention relates to a metal body transfer decoration method and a press transfer apparatus for transferring a transfer layer (decoration layer) to the surface of a metal body.

  Examples of decoration methods for metal products include painting and dyeing for the entire product, and one-point decorations include laser printing, hot stamping, silk printing, and the like. In particular, in the case of painting or dyeing that decorates the entire product, it is difficult to manage the color of paints and dyes, and it is difficult to express a variety of colors. Moreover, when performing one-point decoration, it is necessary to provide another process for laser printing, hot stamping, silk printing, and the like. For this reason, many decorations on metal products are monotonous.

  From such a current situation, it is conceivable to use a transfer sheet as a method for decorating metal products. When using a transfer sheet, either a method of decorating by pressing the transfer sheet against a molded metal product, or a method of pressing and decorating a transfer sheet against a flat metal body before molding, and then molding Become. In the former, it is necessary to use a mold, a pneumatic device, or the like suitable for the shape in order to decorate the deeply drawn portion of the metal product after forming. On the other hand, in the latter case, it is possible to mold the metal body with the transfer sheet base sheet attached, and then peel off the base sheet from the metal body. Manufacture of body ornaments is easy. For this reason, when decorating a metal product using a transfer sheet, it is advantageous to decorate by pressing the transfer sheet against a flat metal body before molding and then molding.

  When decorating by pressing a transfer sheet against a flat metal body before molding as a decoration method for metal products, and then molding, for example, the transfer layer of the transfer sheet includes a printed layer with a graphic pattern If only the roll transfer is used, there may be a case where the printed layer having a graphic pattern is poorly adhered to the transfer layer transferred to the metal product. In addition, when the metal body with the transfer sheet base sheet attached thereto is press-molded, the transfer sheet on the periphery of the metal body in the middle of molding is peeled off, and oil used during pressing adheres to the decorative surface. There are also cases where only the base sheet is turned over to cause a press failure.

  Therefore, an object of the present invention is to provide a metal body transfer decorating method and a press transfer device that enable a metal product to be favorably decorated with a transfer sheet.

The first feature means of the metal body transfer decoration method according to the present invention is a metal body transfer decoration method for transferring a transfer layer to the surface of the metal body, wherein the peripheral edge portion of the transfer sheet is formed on the peripheral edge portion of the metal body. A step of disposing the transfer sheet on the surface of the metal body so as to be positioned, and a step of pressing the transfer sheet while heating the surface toward the surface of the metal body. The transfer layer is laminated, and the adhesive force between the base sheet and the transfer layer is set larger than the adhesive force in other regions of the base sheet on at least one side of the peripheral edge of the base sheet. It is in the point using a sheet.

  A step of placing the transfer sheet on the surface of the metal body so that the peripheral edge of the transfer sheet is located at the periphery of the metal body, and a step of pressing while heating the transfer sheet toward the surface of the metal body, As the transfer sheet, a transfer layer is laminated on the base sheet, and the adhesive force between the base sheet and the transfer layer is set larger than the adhesive force in other regions of the base sheet on at least one side of the peripheral edge of the base sheet. When forming a metal body with the base sheet attached together with the transfer layer, the peripheral edge of the base sheet in which the adhesive force between the base sheet and the transfer layer is set to be larger than that in other regions. And the adhesive state of the transfer layer is maintained. Accordingly, the problem that the base sheet is peeled off from the transfer layer at the peripheral edge of the metal body, the transfer layer on the surface of the metal body is damaged, or dust enters between the base sheet and the transfer layer is suppressed. . Thereafter, unnecessary peripheral portions are cut out from the metal body, and the base sheet is peeled off to obtain a metal product decorated with the transfer layer. In this way, the metal product is suitably decorated with the transfer sheet.

  The second feature means of the metal body transfer decorating method according to the present invention is a metal body transfer decorating method for transferring a transfer layer onto the surface of the metal body, wherein the peripheral edge portion of the transfer sheet is formed on the peripheral edge portion of the metal body. A step of roll-transferring the transfer sheet to the surface of the metal body so as to be positioned, and a step of pressing the transfer sheet after roll transfer toward the surface of the metal body while heating. As described above, the transfer layer is laminated on the base sheet, and the adhesive force between the base sheet and the transfer layer is less than the adhesive force in other regions of the base sheet on one side of the peripheral edge of the base sheet. The point is that a large sheet is used.

  As a transfer sheet for decorating the surface of the metal body, a transfer layer is laminated on the base sheet, and the adhesive force between the base sheet and the transfer layer is other region of the base sheet on at least one side of the peripheral edge of the base sheet. By using a sheet that is set to be larger than the adhesion force in the region, the adhesion state between the substrate sheet and the transfer layer is maintained in the region having a large adhesion force in the peripheral portion of the substrate sheet as compared with other regions.

Here, without transferring the transfer sheet onto the surface of the metal body, the transfer sheet is arranged so that the peripheral edge of the metal body and the peripheral edge of the base sheet are positioned on the surface of the metal body, and the transfer sheet is placed on the metal body. When pressing while heating toward the surface of the machine, surround the press transfer machine with a clean booth or press in a clean room so that dust is not caught between the object to be decorated and the transfer sheet. It is necessary to operate the transfer machine. Further, it is necessary to devise so that air or the like does not enter between the object to be decorated and the transfer sheet.
However, before pressing the transfer sheet toward the surface of the metal body, the decorative sheet is rolled by transferring the transfer sheet onto the surface of the metal body so that the peripheral edge of the base sheet is positioned on the peripheral edge of the metal body. It is possible to prevent such a problem that dust or the like is trapped between the transfer sheet and air or the like. Then, the transfer sheet is reliably transferred to the metal body by pressing the transfer sheet while heating it toward the surface of the metal body.

  In addition, even when a metal body with the substrate sheet attached thereto is formed together with the transfer layer, the adhesion between the transfer sheet and the peripheral edge of the substrate sheet in which the adhesion force between the substrate sheet and the transfer layer is set to be larger than that of other regions. State is maintained. Accordingly, the problem that the base sheet is peeled off from the transfer layer at the peripheral edge of the metal body, the transfer layer on the surface of the metal body is damaged, or dust enters between the base sheet and the transfer layer is suppressed. . Thereafter, unnecessary peripheral portions are cut out from the metal body, and the base sheet is peeled off to obtain a metal product decorated with the transfer layer. In this way, the metal product is suitably decorated with the transfer sheet.

  According to a third feature of the metal body transfer decorative method according to the present invention, in the step of pressing the transfer sheet while heating it toward the surface of the metal body, a peripheral portion of the metal body is included in the transfer sheet. It exists in the point pressed while heating the part located at high temperature rather than the other part.

  Of the transfer sheet that is pressed against the metal body, the portion located at the peripheral edge of the metal body may be peeled off from the metal body when the peripheral edge of the metal body is deep drawn. Become. Here, in the step of pressing the transfer sheet while heating it toward the surface of the metal body as in this means, the portion of the transfer sheet located at the peripheral edge of the metal body is more than the other portions. When pressed while heating at a high temperature, the transfer sheet at the periphery of the metal body is further heated and the transfer layer is firmly bonded to the metal body. In addition, the bonding state between the transfer sheet and the base sheet of the transfer sheet at the peripheral edge of the metal body becomes stronger. As a result, when the peripheral part of the metal body is deep drawn, the transfer layer is peeled off from the peripheral part of the metal body, or the base sheet is peeled off from the transfer layer at the peripheral part of the metal body. Can be suppressed.

  A first characteristic configuration of a press transfer device according to the present invention is a press transfer device that transfers a transfer layer onto the surface of a metal body, and is close to the placement portion on which the metal body is placed and the placement portion described above. A pressing portion that presses the transfer sheet that is spaced apart and placed on the surface of the metal body toward the placement portion, and an elastic sheet that can heat the transfer sheet is disposed in the pressing portion, As the transfer sheet, the transfer layer is laminated on a base sheet, and the adhesive force between the base sheet and the transfer layer is applied to other regions of the base sheet on at least one side of the peripheral edge of the base sheet. It is in the point pressed against the said metal body using the sheet | seat set larger than the adhesion force.

  In the press transfer apparatus, a pressing portion that presses the mounting portion on which the metal body is mounted, and the transfer sheet that is disposed on the surface of the metal body in the vicinity of the mounting portion, toward the mounting surface. An elastic sheet capable of heating the transfer sheet to the pressing portion, and as a transfer sheet, a transfer layer is laminated on the base sheet, and the adhesive force between the base sheet and the transfer layer is At least one side of the peripheral edge of the base sheet is pressed against the metal body using a sheet that is set to be larger than the adhesive force in other regions of the base sheet, so that the adhesive force is exerted on the peripheral edge of the base sheet. Compared with other regions, the large region maintains the adhesive state between the base sheet and the transfer layer, and the transfer sheet is pressed while being heated toward the surface of the metal body. As a result, the displacement of the transfer layer located on the surface of the metal body is suppressed, and the transfer of the transfer layer to the metal body is ensured.

  A second characteristic configuration of the press transfer device according to the present invention is that a thermocompression bonding portion that presses the transfer sheet so that it can be heated at a higher temperature than the elastic sheet is provided on a side edge portion of the pressing portion.

  Of the transfer sheet that is pressed against the metal body, the portion located at the peripheral edge of the metal body may be peeled off from the metal body when the peripheral edge of the metal body is deep drawn. Become. Here, as in the present configuration, the transfer sheet at the peripheral part of the metal body is provided with a thermocompression bonding part that includes a thermocompression bonding part that presses the transfer sheet at a higher temperature than the elastic sheet at the side edge of the pressing part. As a result, the transfer layer is firmly bonded to the metal body by being heated at a high temperature. In addition, the bonding state between the transfer sheet and the base sheet of the transfer sheet at the peripheral edge of the metal body becomes stronger. As a result, when the peripheral part of the metal body is deep drawn, the transfer layer is peeled off from the peripheral part of the metal body, or the base sheet is peeled off from the transfer layer at the peripheral part of the metal body. Can be suppressed.

It is sectional drawing of a transfer sheet. It is II-II sectional drawing of FIG. It is sectional drawing which shows the method of adhering a transfer sheet to the surface of a to-be-decorated body by roll transfer. It is a figure which shows the transfer process by the press transfer apparatus which concerns on this invention. It is a figure which shows the transfer process by the press transfer apparatus which concerns on this invention. It is a figure which shows the transfer process by the press transfer apparatus which concerns on this invention. It is a figure which shows the transfer process by the press transfer apparatus which concerns on this invention. It is a figure which shows the formation process of a metal body. It is a figure which shows the process of cutting and removing the peripheral part of a metal body. It is a figure which shows the process of peeling a base sheet from a metal body. It is a figure which shows the transfer process by the press transfer apparatus of 2nd Embodiment. It is a figure which shows the transfer process by the press transfer apparatus of 2nd Embodiment. It is a figure which shows the transfer sheet of another form. It is a figure which shows the transfer sheet of another form. It is a figure which shows the transfer sheet of another form. It is a figure which shows the transfer sheet of another form. It is a figure which shows the transfer sheet of another form.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First embodiment]
The transfer sheet 1 used in the present invention is used for decorating the surface of a body to be decorated such as a metal body, for example. In the transfer sheet 1, a release layer 3 is formed on a base sheet 2, a mat layer 4 is partially formed on the release layer 3, and then a release layer 5, a design layer 6, and an adhesive layer are formed as a transfer layer 8. 7 is formed (see FIG. 1). To decorate the object to be decorated, after the transfer layer 8 of the transfer sheet 1 is heated and pressed to the surface of the object to be decorated, the substrate sheet 2 is peeled off and the transfer layer is applied to the surface of the object to be decorated. Only 8 is transferred.

  Here, the release layer 3 is a layer provided so that the base sheet 2 can be easily peeled from the transfer layer 8, and is peeled off together with the base sheet 2. The mat layer 4 is a layer that has fine irregularities on the surface and gives the mat shape by copying the irregularities on the surface of the transfer layer 8, and is peeled off together with the base sheet 2. The peeling layer 5 is a layer which peels from the base sheet 2 after transfer and becomes the surface of the object to be decorated. The design layer 6 is a layer for applying a pattern to the transfer layer 8. The adhesive layer 7 is a layer that adheres the transfer layer 8 to the surface of the object to be decorated.

  As the base sheet 2, polyester resin, polypropylene resin, vinyl chloride resin, polyethylene resin, polyethylene terephthalate resin, polycarbonate resin, nylon resin, vinylon resin, acetate resin, polyethylene resin, polyamide resin, polyacrylic resin, Plastic sheets such as polyvinyl chloride resins can be used. As the thickness of the base sheet 2, a sheet having a thickness of 10 to 100 μm may be used.

  As shown in FIGS. 1 and 2, the release layer 3 is formed in a portion other than the peripheral edge 2 </ b> A of the base sheet 2. The release layer 3 is a layer that is removed together with the base sheet 2 after transfer. As the release layer 3, melamine resin release agent, silicone resin release agent, fluororesin release agent, cellulose derivative release agent, urea resin release agent, polyolefin resin release agent, etc. Can be used. As a method for forming the release layer, there are printing methods such as gravure printing, screen printing, and offset printing.

  Next, a mat layer 4 for partially matting the surface of the transfer object is partially formed on the release layer 3. The release layer 3 and the mat layer 4 are layers that are peeled off together with the base sheet 2 when the base sheet 2 is peeled after the transfer sheet 1 is brought into close contact with the surface of the transfer object. As the mat layer 4, an epoxy resin, a melamine resin, or a copolymer resin or mixture thereof in which extender pigments such as silica and alumina, resin beads, and the like are dispersed is used. As the resin, it is preferable to use an epoxy / melamine mixed resin that is relatively quick to dry and excellent in releasability from the hard coat layer 5. Further, the mat layer 4 may contain an acid catalyst. As the acid catalyst, paratoluenesulfonic acid or the like can be used. As a method for forming the mat layer 4, there are printing methods such as a gravure printing method, a screen printing method, and an offset printing method.

  Next, the release layer 5 is first formed as the transfer layer 8. The release layer 5 is a layer that becomes the outermost surface of the object to be decorated when the base sheet 2, the release layer 3, and the mat layer 4 are peeled off. The release layer 5 may be made of acrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, or vinyl chloride-vinyl acetate copolymer. Copolymers such as system resins and ethylene-vinyl acetate copolymer resins may be used. If the release layer 5 needs to have hardness, a hard-coat layer may be selected by selecting a photo-curable resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin. . Examples of the method for forming the release layer 5 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, and a printing method such as a gravure printing method and a screen printing method.

  Then, the symbol layer 6 is formed. As a material of the pattern layer 6, a binder such as a polyvinyl resin, a polyamide resin, a polyester resin, an acrylic resin, a polyurethane resin, a polyvinyl acetal resin, a polyester urethane resin, a cellulose ester resin, or an alkyd resin is used as a binder. And a color ink containing an appropriate color pigment or dye as a colorant may be used. As a method for forming the pattern layer 6, a normal printing method such as a gravure printing method, a screen printing method, or an offset printing method may be used. The thickness of the pattern layer 6 is preferably 1 to 30 μm. The design layer 6 is not limited to colored ink, but may form a metal vapor deposition layer or the like to express a design with metallic luster. Aluminum, chromium, copper, tin, or the like is used as the material for the metal deposition layer. The metal vapor deposition layer may be formed by using a vacuum vapor deposition method, a sputtering method, an ion plating method, or the like.

  Next, the adhesive layer 7 is formed. Examples of the material of the adhesive layer 7 in contact with the object to be decorated in the transfer layer 8 include polyacrylic resins, polystyrene resins, and polyamide resins. As a method for forming the adhesive layer 7, a gravure coating method, a roll coating method, a comma coating method or the like, a gravure printing, a screen printing method, or the like may be used.

  As described above, the transfer sheet 1 is configured such that the release layer 3 is not formed on the peripheral edge portion 2A of the base sheet 2 and the release layer 5 is in contact with the base sheet 2, resulting in the base sheet. 2 is set to be larger than the adhesion force between the release layer 3 and the release layer 5. That is, the adhesive force between the peripheral edge 2 </ b> A of the base sheet 2 and the transfer layer 8 is set larger than the adhesive force between other regions of the base sheet 2 and the transfer layer 8. For this reason, the peripheral edge 2A of the base sheet 2 is difficult to peel off from the transfer layer 8, and the adhesion state is maintained. A method for decorating the surface of the object to be decorated using the transfer sheet 1 will be described below.

  As shown in FIG. 3, using a roll transfer machine equipped with a heat-resistant rubber-like elastic body 11 such as silicon rubber, the adhesive layer 7 side of the transfer sheet 1 is brought into close contact with the surface of the plate-like metal body 9, and a temperature of 80˜ Heat and pressure are applied from the base sheet 2 side of the transfer sheet 1 through the heat-resistant rubber-like elastic body 11 set at a temperature of about 260 ° C. By doing so, the adhesive layer 7 adheres to the surface of the metal body 9.

  Next, as shown in FIGS. 4 to 7, the adhesive state of the transfer sheet 1 to the metal body 9 is strengthened using a press transfer device 20. In the press transfer device 20, a pair of die sets 21A and 21B are provided with heat insulating plates 22A and 22B, heater plates 23A and 23B provided with heater pipes, and elastic sheets 24A and 24B, respectively. The elastic sheets 24A and 24B have high thermal conductivity, heat resistance, and weather resistance, and are, for example, EPT (ethylene propylene terpolymer) sheets and Teflon (registered trademark) sheets.

  First, as shown in FIGS. 4 and 5, the metal body 9 having the transfer sheet 1 laminated on the surface by roll transfer is placed on the elastic sheet 24A of the die 21A.

  Next, as shown in FIG. 6, the die 21 </ b> B is moved close to the die 21 </ b> A and clamped, and the transfer sheet 1 is directed toward the surface of the metal body 9 while heating the metal body 9 and the transfer sheet 1. Press. At this time, the surfaces of the elastic sheets 24A and 24B are heated to about 80 to 120 ° C., and, for example, a pressure of 4.0 to 10 MPa is applied for about 1 to 10 seconds. Thereafter, as shown in FIG. 7, the die 21B is separated from the die 21A and the mold is opened, and the metal body 9 on which the transfer sheet 1 is laminated is taken out.

  Next, using another press, the metal body 9 is drawn as shown in FIG. At this time, the release layer 3 is not formed on a portion of the transfer sheet 1 located on the peripheral edge portion 9A of the metal body 9, and the surface of the metal body 9 and the transfer sheet 1 are formed by the above press transfer. The adhesive state with the adhesive layer 7 and the adhesive state between the base sheet 2 and the release layer 5 are strong. Therefore, in the drawn metal body 9, the base sheet 2 and the release layer 3 of the transfer sheet 1 laminated on the surface thereof are not peeled off from the transfer layer 8, and the adhesion state with the transfer layer 8 is maintained. Is done.

  Thereafter, as shown in FIG. 9, unnecessary end portions of the metal body 9 are cut off, and then the base sheet 2 and the release layer 3 are peeled off from the surface of the metal body 9 as shown in FIG. A final product in which the surface of the body 9 is decorated with the transfer layer 8 is obtained. A portion where the base sheet 2 and the transfer layer 8 are bonded to each other at the peripheral edge of the transfer sheet 1 is simultaneously cut when the unnecessary peripheral edge 9A of the metal body 9 shown in FIG. 8 is cut.

  Thus, the adhesion state between the peripheral edge portion of the base sheet 2 and the transfer layer 8 is maintained, and the transfer sheet 1 is pressed against the surface of the metal body 9 while being heated, and the transfer layer positioned on the surface of the metal body 9. Thus, the transfer of the transfer layer 8 to the metal body 9 was ensured. In addition, when the metal body 9 with the base sheet 2 attached thereto is formed together with the transfer layer 8, the bonding state between the peripheral portion of the base sheet 2 and the transfer layer 8 is maintained, and the base body is formed at the peripheral portion of the metal body 9. The problem that the sheet 2 peeled off from the transfer layer 8 and the transfer layer 8 on the surface of the metal body 9 was damaged, or dust entered between the base sheet 2 and the transfer layer 8 was suppressed. As a result, the metal sheet was satisfactorily decorated with the transfer sheet 1.

[Second Embodiment]
In this embodiment, at the time of press transfer, the transfer sheet 1 located at the peripheral edge of the metal body 9 is heated and pressed, and as shown in FIG. 11, the heater of one die 21B of the press transfer machine 20 A thermocompression bonding part 25 is provided at the outer peripheral end of the plate 23B and the elastic sheet 24B.

As shown in FIG. 12, at the time of mold clamping, the thermocompression bonding section 25 presses the transfer sheet 1 positioned at the peripheral edge 9A of the metal body 9 while heating it at a higher temperature than the elastic sheet 24B.
The thermocompression bonding part 25 is heated to 150 to 250 ° C., for example, and is pressed with a pressure of about 0.1 MPa. In the transfer sheet 1, the portion laminated on the peripheral portion 9 </ b> A of the metal body 9 is a portion where the release layer 3 does not exist. That is, the portion where the release layer 3 does not exist in the transfer sheet 1 is heated and pressed by the thermocompression bonding portion 25 so that the base sheet 2 and the release layer 5 in the transfer sheet 1 are more firmly bonded, The adhesive layer 8 of the transfer sheet 1 and the surface of the metal body 9 are more firmly fixed.

  As a result, in the subsequent forming process, the turn-up of the base sheet 2 and the release layer 3 from the transfer layer 8 at the peripheral portion 9A of the metal body 9 and the peeling of the transfer sheet 1 are further suppressed, and the transfer by transfer is suppressed. A final product without uneven decoration can be obtained.

[Third Embodiment]
In the above embodiment, an example in which roll transfer is performed in the pre-process of press transfer has been described. However, without performing roll transfer, the transfer layer 8 is transferred from the transfer sheet 1 to the metal body 9 only by press transfer. You may make it decorate.
However, in this case, the press transfer machine is enclosed in a clean booth or the like, or the press transfer machine is operated in a clean room so that dust or the like is not sandwiched between the metal body 9 and the transfer sheet 1. There is a need. Further, it is necessary to devise so that air or the like does not enter between the metal body 9 and the transfer sheet 1.

[Other embodiments]
(1) In the press transfer of the first embodiment, the entire surface of the metal body 9 is pressed by the elastic sheet 25B. However, not the entire surface of the metal body 1 but only the final product portion may be pressed. Good.

(2) In each of the above embodiments, the region not having the release layer 3 is provided on the entire peripheral edge corresponding to the outer periphery of the transfer sheet 1, but the region not having the release layer 3 is, for example, a rectangular transfer In the sheet 1, it may be two sides facing each other or only one side. Further, the thermocompression bonding part 25 provided in the press transfer device 20 is not necessarily arranged with respect to the entire peripheral part corresponding to the outer periphery of the metal body 9, for example, on two opposing sides of the rectangular metal body 9. There may be, and it may be arranged only on one side.

(3) In each of the above-described embodiments, the transfer sheet 1 on which the mat layer 4 is formed has been exemplified. However, the transfer sheet 1 used in the present invention has no mat layer 4 formed thereon. Also good.

(4) In the transfer sheet 1, in order to set the adhesive force between the peripheral edge 2A of the base sheet 2 and the transfer layer 8 larger than the adhesive force in other regions of the base sheet 2, as shown in FIG. The release layer 3 and the release layer 5 may be narrower than the other layers, and the peripheral edge 2A of the base sheet 2 and the design layer 6 may be in contact with each other.

(5) In the transfer sheet 1, in order to set the adhesive force between the peripheral edge 2A of the base sheet 2 and the transfer layer 8 larger than the adhesive force in other regions of the base sheet 2, as shown in FIG. Only the release layer 5 may be made narrower than other layers, and the release layer 3 and the design layer 6 may be in contact with each other at the peripheral edge 2A of the base sheet 2.

(6) In the transfer sheet 1, in order to set the adhesive force between the peripheral edge 2A of the base sheet 2 and the transfer layer 8 larger than the adhesive force in other regions of the base sheet 2, as shown in FIG. The release layer 3, the release layer 5, and the design layer 6 may be made narrower than the other layers so that the peripheral edge 2 </ b> A of the base sheet 2 and the adhesive layer 7 are in contact with each other.

(7) In the transfer sheet 1, in order to set the adhesion force between the peripheral edge 2A of the base sheet 2 and the transfer layer 8 to be larger than the adhesion force in other regions of the base sheet 2, as shown in FIG. The release layer 5 and the design layer 6 are made narrower than the above layer, and a connection layer C is provided between the release layer 3 and the adhesive layer 7 at the peripheral edge 2A of the base sheet 2 to provide a connection layer C. May be. Moreover, as shown in FIG. 17, only the peeling layer 5 may be made narrow and the connection layer C which connects both between the mold release layer 3 and the design layer 6 may be provided. The connection layer C is a resin material or the like that adheres to both of the two layers to be connected.

  The present invention forms a decorative layer on the surface of a metal body in a metal product used in various fields, such as automobiles, household appliances, mobile phones, personal computers, regardless of interior and exterior products. When widely available.

DESCRIPTION OF SYMBOLS 1 Transfer sheet 2 Base sheet 3 Release layer 4 Mat | matte layer 5 Release layer 6 Design layer 7 Adhesive layer 8 Transfer layer 9 Metal body 11 Heat-resistant rubber-like elastic body 20 Press transfer device 21A, 21B Die set 22A, 22B Thermal insulation board 23A, 23B Heater plate 24A, 24B Elastic sheet 25 Thermocompression bonding part C Connection layer

Claims (5)

A metal body transfer decoration method for transferring a transfer layer to the surface of a metal body,
Arranging the transfer sheet on the surface of the metal body such that the peripheral edge of the transfer sheet is located on the peripheral edge of the metal body;
A step of pressing the transfer sheet while heating it toward the surface of the metal body,
As the transfer sheet, the transfer layer is laminated on a base sheet, and the adhesive force between the base sheet and the transfer layer is applied to at least one side of the peripheral edge of the base sheet in other regions of the base sheet. Metal body transfer decoration method using a sheet set larger than the adhesion force. A metal body transfer decoration method for transferring a transfer layer to the surface of a metal body,
Roll-transferring the transfer sheet onto the surface of the metal body such that the peripheral edge of the transfer sheet is positioned on the peripheral edge of the metal body;
A step of pressing the transfer sheet after roll transfer while heating it toward the surface of the metal body,
As the transfer sheet, the transfer layer is laminated on a base sheet, and the adhesive force between the base sheet and the transfer layer is applied to at least one side of the peripheral edge of the base sheet in other regions of the base sheet. Metal body transfer decoration method using a sheet set larger than the adhesion force.   2. In the step of pressing the transfer sheet while heating it toward the surface of the metal body, a portion of the transfer sheet that is positioned at the peripheral edge of the metal body is heated at a higher temperature than the other portions. Or the metal body transcription | transfer decoration method of 2 description. A press transfer device for transferring a transfer layer to the surface of a metal body,
While having a placement part for placing the metal body, and a pressing part that presses the transfer sheet placed on the surface of the metal body close to and away from the placement part, toward the placement part, An elastic sheet capable of heating the transfer sheet is disposed in the pressing portion,
As the transfer sheet, the transfer layer is laminated on a base sheet, and the adhesive force between the base sheet and the transfer layer is applied to at least one side of the peripheral edge of the base sheet in other regions of the base sheet. A press transfer device that presses the metal body using a sheet that is set larger than the adhesion force.   The press transfer apparatus according to claim 4, further comprising a thermocompression bonding portion that presses the transfer sheet so as to be heated at a higher temperature than the elastic sheet at a side edge portion of the pressing portion.

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