JP2010149383A - Production method for partial matting transfer sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a production method for partial matting transfer sheet, capable of exfoliating in an interface between a mask layer and an exfoliation layer on a transfer work and steadily getting a decoration with partial matting on a surface of transferred object. <P>SOLUTION: A mold release layer 3 containing a matting agent is formed all over a base sheet 2, a mask layer 4 containing an active energy beam curable resin is formed partially and cured by the active energy beam and an exfoliation layer 5 and a pattern layer 6 are formed as transfer layers 8. When the partial matting transfer sheet thus obtained is adhered on the surface of transferred object e.g. a resin molding and the matting layer is exfoliated along with the base sheet, an irregularity is copied to the transfer layer and a partial mating transfer molded article with a matting pattern expression can be obtained since the surface of matting layer has a fine irregularity. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a partial mat transfer sheet, which can obtain a molded article partially having a mat portion, such as a display panel of an electronic device such as a mobile phone or a digital music player.

  There is a transfer method as a method of decorating the surface of the transfer object. The transfer method uses a transfer sheet in which a transfer layer composed of a release layer, a design layer, an adhesive layer, etc. is formed on a substrate sheet, and heat-presses the transfer layer to adhere to the transfer object, This is a method of decorating by peeling and transferring only the transfer layer to the surface of the transfer object.

  Then, as the partial mat transfer sheet 101 for obtaining a decorative molded product having a partially mat-like surface, the mat layer 103 was partially formed on the base sheet 102 and the mat layer 103 was sufficiently cured. Later, there was a transfer layer 107 formed of a release layer 104, a design layer 105, an adhesive layer 106, and the like (see FIG. 5).

  When such a partial mat transfer sheet 101 is adhered to the surface of an object to be transferred 108 such as a resin molded product, and the mat layer 103 is peeled off together with the base sheet 102, the surface of the mat layer 103 has fine irregularities. Asperities are copied to 107, and a partial mat transfer molded product 111 in which the mat shape is expressed can be obtained (see FIG. 6).

JP 2000-85299 A

  However, in the case of so-called in-line printing in which the mat layer 103 to the release layer 104 and the design layer 105 are printed by a series of printing machines, the mat layer 103 is usually made of an amino alkyd resin and takes time to dry. In this case, a sufficient drying time cannot be ensured between printing and printing of the release layer 104. As a result, it is necessary to form the release layer 104 in a layered manner before the mat layer 103 is sufficiently cured, and when the base sheet 102 is peeled off after the partial mat transfer sheet 101 is adhered to the surface of the transfer object 108, There is a problem in that the decoration having the mat cannot be performed reliably without peeling between the mat layer 103 and the release layer 104.

  In the case of so-called off-line printing in which the mat layer 103 is printed and then heated and dried sufficiently, the mat layer 103 is sufficiently cured, and then attached to the printing machine again to print the release layer 104 and the following. There is a problem like this.

  That is, since the mat layer 103 is printed and the release layer 104 is printed, more heat and a longer time are required than in the case of in-line printing, so that the base sheet 102 contracts and the mat layer printed earlier It is difficult to match the pattern 103 with the pattern of the release layer 104 or later to be printed later, particularly the pattern layer 105.

  Therefore, the present invention provides a method for producing a partial mat transfer sheet, which can decorate the surface of the transfer object with a partial mat with certainty and can match the pattern of each layer. For the purpose.

  In order to achieve the above object, the present invention has the following features.

  In the method for producing a partial mat transfer sheet of the present invention, a release layer containing a matting agent is entirely formed on a substrate sheet, and a mask layer containing an active energy ray-curable resin is partially formed and then activated. It is characterized by being cured with energy rays and then forming a release layer and a pattern layer as a transfer layer.

  In the above invention, the mask layer may be partially formed and then cured with active energy rays, and then a peeling layer and a pattern layer may be formed inline as a transfer layer.

  The partial mat transfer sheet of the present invention is formed by any one of the above-described partial mat transfer sheet manufacturing methods.

  The partial mat transfer sheet of the present invention comprises a release layer containing a matting agent entirely on a base sheet, a mask layer partially containing an active energy ray-curable resin, a release layer and a design layer as a transfer layer. Are formed.

  In the method for producing a partial mat transfer molded product of the present invention, the partial mat transfer sheet of the above invention is brought into close contact with the surface of the transfer material, and heat and pressure are applied from the base sheet side of the partial mat transfer sheet. And a step of peeling the substrate sheet, the release layer, and the mask layer after the transfer layer is adhered to the surface of the transfer object.

  The method for producing a partial mat transfer molded product according to the present invention includes arranging the partial mat transfer sheet according to the above invention in a mold so that the surface of the base sheet on which the transfer layer is not formed faces the mold cavity, A step of pouring a molding resin into the mold and separating the base sheet, the release layer and the mask layer after cooling and solidifying the molding resin is provided.

  In the method for producing a partial mat transfer sheet of the present invention, a release layer containing a matting agent is entirely formed on a substrate sheet, and a mask layer containing an active energy ray-curable resin is partially formed and then activated. Curing with energy rays. Therefore, it is possible to manufacture a partial mat transfer sheet that is peeled off at the interface between the mask layer and the peeling layer during transfer processing and can be surely decorated with a mat partially on the surface of the transfer object.

  Further, in the method for producing a partial mat transfer sheet of the present invention, a mask layer is partially formed and then cured with an active energy ray, and then a peeling layer and a pattern layer are formed in-line as a transfer layer. Therefore, since each layer can be formed continuously, the pattern of each layer can be registered.

  Embodiments of the present invention will be described in detail with reference to the drawings.

  First, the manufacturing method of the partial mat transfer sheet 1 of this invention is demonstrated.

  In the partial mat transfer sheet 1, the release layer 3 containing the matting agent is formed on the entire surface of the base sheet 2, and the mask layer 4 containing the active energy ray-curable resin is partially formed. Then, the release layer 5 and the pattern layer 6 are formed as the transfer layer 8, and usually the adhesive layer 7 is also formed (see FIG. 1).

  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.

  First, the release layer 3 containing the matting agent is formed on the entire surface of the base sheet 2. The release layer 3 is a layer that partially mattes the surface of the transfer object, and is a layer that is removed together with the base sheet 2 after transfer. As the release layer 3, an epoxy resin, a melamine resin, or a copolymer resin or mixture thereof in which extender pigments such as silica and alumina or resin beads are dispersed as a matting agent 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 mask layer 4. Examples of the method for forming the release layer 3 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, a printing method such as a gravure printing method, a screen printing method, and an offset printing method.

  Next, the mask layer 4 is formed in a portion where the matte design is not developed. The release layer 3 and the mask layer 4 are layers that are peeled off together with the base sheet 2 when the base sheet 2 is peeled after the partial mat transfer sheet 1 is brought into close contact with the surface of the transfer object (FIGS. 2 and 3). b)). The mask layer 4 is made of a photocurable resin such as an ultraviolet curable resin or an active energy ray curable resin such as an electron beam curable resin. As a method for forming the mask layer 4, there are printing methods such as a gravure printing method, a screen printing method, and an offset printing method. After the mask layer 4 is formed, the mask layer 4 is cured with active energy rays from an active energy irradiation device. By curing the mask layer 4, it is possible to decorate the surface of the transfer object with a partial mat surely by peeling at the interface between the mask layer 4 and the release layer 5 during transfer processing.

  After the formation of the mask layer 4, the substrate sheet 2 may be wound up once, and then the release layer 5 and the pattern layer 6 as the transfer layer 8 may be formed off-line. Even if the release layer 5 and the pattern layer 6 are subsequently formed in-line by setting an active energy irradiation device on the line between the printing of 5 and curing with an active energy ray immediately after the mask layer 4 is formed. Good (not shown). Unlike the case where the mask layer 4 is cured by heating, the mask layer 4 is cured instantaneously by irradiation with an active energy ray. Therefore, even in a short period of time from the printing of the mask layer 4 to the printing of the release layer 5 is sufficient. It is for hardening. When the mask layer 4 and subsequent layers are formed in-line, each layer can be formed continuously, which is preferable because the pattern of each layer can be registered.

  The mask layer 4 may contain a colorant. If the mask layer 4 contains a colorant, it is preferable because the transfer layer 8 can be easily registered.

  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 transfer object when the substrate sheet 2, the release layer 3, and the mask layer 4 are released. 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.

  Moreover, you may form the contact bonding layer 7 as needed. The adhesive layer 7 is a layer for adhering the partial mat transfer sheet 1 to an object to be transferred such as a resin molded product 9 by a transfer method or a simultaneous molding transfer method described later. When the material of the resin molded product 9 that is a transfer object is a polyacrylic resin, a polyacrylic resin may be used as the material of the adhesive layer 7. In addition, when the material of the resin molded product 9 is polyphenylene oxide / polystyrene resin, polycarbonate resin, styrene copolymer resin, or polystyrene blend resin, polyacrylic resin or polystyrene resin having affinity with these resins Polyamide resin or the like may be used as the material for the adhesive layer 7. 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. The dry film thickness of the adhesive layer 7 is generally 1 to 5 μm.

  By the manufacturing method of the partial mat transfer sheet 1 described above, the release layer 3 containing the matting agent entirely on the base sheet 2, the mask layer 4 partially containing the active energy ray curable resin, and the transfer layer 8, the partial mat transfer sheet 1 on which the release layer 5 and the design layer 6 are formed can be produced (see FIG. 1).

  Next, a method for manufacturing the partial mat transfer molded article 11 (see FIG. 4) using the partial mat transfer sheet 1 will be described.

  Examples of the thermoplastic resin used in the resin molded product 9 that is an example of the transfer object for forming the partial mat transfer molded product 11 include polyolefin resins such as polyethylene and polypropylene, polystyrene resins, and polyvinyl chloride resins. Poly (meth) acrylate resins, acrylic resins, polyacetal resins, polyester resins such as polyethylene terephthalate and polybutylene terephthalate, polyamide resins, polycarbonate resins, polyphenylene sulfide resins, polyimide resins and other known thermoplastic resins are all used. it can. These resins can be used alone or in admixture of two or more.

  The transfer process of transferring the transfer layer 8 from the partial mat transfer sheet 1 onto the resin molded product 9 as the transfer object is performed as follows (see FIG. 2). First, the transfer layer 8 side of the partial mat transfer sheet 1 is brought into close contact with the surface of the resin molded product 9. Next, using a transfer machine such as a roll transfer machine or an up-down transfer machine provided with a heat-resistant rubber-like elastic body 21 such as silicon rubber, the heat-resistant rubber is set at a temperature of about 80 to 260 ° C. and a pressure of about 500 to 2000 Pa. Heat and pressure are applied from the base sheet 2 side of the partial mat transfer sheet 1 through the elastic body 21. By doing so, the transfer layer 8 adheres to the surface of the resin molded product 9. Finally, when the base sheet 2, the release layer 3 and the mask layer 4 are peeled off after cooling, the transfer layer 8 is transferred to the surface of the resin molded product 9, and the transfer process is completed. Here, examples of the material to be transferred include rubber products, metal products, woodwork products, and glass products in addition to the resin molded product 9.

  The transfer step of transferring the transfer layer 8 from the partial mat transfer sheet 1 onto the resin molded product 9 by the simultaneous molding transfer method is performed as follows (see FIG. 3). First, the partial mat transfer sheet 1 is fed into a molding die 31 composed of a movable die and a fixed die so that the surface on which the transfer layer 8 is not formed faces the die cavity. At that time, the sheet-like partial mat transfer sheet 1 may be fed one by one, or a necessary part of the long partial mat transfer sheet 1 may be intermittently fed. When the long partial mat transfer sheet 1 is used, the partial mat transfer sheet 1 is placed between the partial mat transfer sheet 1 and the molding die 31 using a feeding device having a positioning mechanism. It is recommended that the register match. Further, when the partial mat transfer sheet 1 is intermittently fed, the partial mat transfer sheet 1 may be fixed by a movable mold and a fixed mold after the position of the partial mat transfer sheet 1 is detected by a sensor. After the molding die 31 is closed, the molding resin 32 is injected and filled from the gate into the die and then cooled and solidified to form the resin molded product 9 and at the same time, the partial mat transfer sheet 1 is adhered to the surface. (See FIG. 3 (a)). After the resin molded product 9 is cooled, the molding die 31 is opened and the resin molded product 9 is taken out. Finally, when the base sheet 2, the release layer 3 and the mask layer 4 are peeled off, a partial mat transfer molded product 11 in which the transfer layer 8 is transferred onto the surface of the resin molded product 9 is formed (see FIG. 3B). ).

  A 38 μm-thick polyethylene terephthalate film was used as the base sheet 2, and an ink obtained by adding a matting agent to the aminoalkyd resin and urea melamine resin as the release layer 3 was coated on the entire surface. Next, after printing an ultraviolet curable resin as a mask layer 4 on a portion where a mat-like design is not expressed by a gravure printing method, the ultraviolet ray is irradiated and cured by an active energy irradiation device installed on a line of a printing machine, and subsequently As the transfer layer 8, an ultraviolet curable hard coat mainly composed of urethane acrylate is printed on the entire surface to provide a hard coat layer as the release layer 5, and the pattern layer 6 is printed using an acrylic resin-based ink. The partial mat transfer sheet 1 was obtained by printing the adhesive layer 7 using a vinyl acetate copolymer resin-based ink. Here, the formation of the mask layer 4 and below was performed in-line.

  The partial mat transfer sheet 1 is placed in a molding die 31 so that the surface of the base sheet on which the transfer layer 8 is not formed faces the mold cavity, and the mold is clamped, and an acrylic resin is injected as the molding resin 32. After that, the mold was opened to obtain the resin molded product 9 and simultaneously transferred. When the base sheet 2, the release layer 3, and the mask layer 4 are peeled from the resin molded product 9, the obtained partial mat transfer molded product 11 has a glossy design on the portion where the mask layer 4 is printed. The surface of the non-printed portion was formed in a mat shape, and there was no misregistration between the mat portion and the design layer 4.

It is sectional drawing which shows the partial mat transfer sheet of this invention. It is sectional drawing which shows the method of providing a transfer layer on the surface of a resin molded product by the transfer method. It is sectional drawing which shows the method of providing a transfer layer on the surface of a resin molded product by the simultaneous molding transfer method. It is sectional drawing which shows the partial mat transcription | transfer molded product of this invention. It is sectional drawing which shows the conventional partial mat transfer sheet. It is sectional drawing which shows the partial mat transfer molded article formed with the conventional partial mat transfer sheet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Partial mat transfer sheet 2 Base sheet 3 Release layer 4 Mask layer 5 Release layer 6 Pattern layer 7 Adhesive layer 8 Transfer layer 9 Resin molded product 11 Partial mat transfer molded product 21 Heat resistant rubber-like elastic body 31 Mold for molding 32 Molding Resin 101 Partial mat transfer sheet 102 Base sheet 103 Mat layer 104 Release layer 105 Pattern layer 106 Adhesive layer 107 Transfer layer 108 Transfer object 111 Partial mat transfer molded product

Claims (6)

  A release layer containing a matting agent is entirely formed on a base sheet, a mask layer containing an active energy ray-curable resin is partially formed, and then cured with active energy rays, and then a release layer as a transfer layer And a pattern layer. A method for producing a partial mat transfer sheet, wherein:   The method for producing a partial mat transfer sheet according to claim 1, wherein the mask layer is partially formed and then cured by active energy rays, and then the step of forming a release layer and a pattern layer as the transfer layer is performed in-line.   A partial mat transfer sheet formed by the method for producing a partial mat transfer sheet according to claim 1.   The present invention is characterized in that a release layer containing a matting agent is entirely formed on a base sheet, a mask layer partially containing an active energy ray-curable resin, and a release layer and a pattern layer are formed as a transfer layer. Partial mat transfer sheet.   The partial mat transfer sheet according to claim 3 or 4, wherein the transfer layer side is brought into close contact with the surface of the transferred material, and heat and pressure are applied from the base sheet side of the partial mat transfer sheet to transfer the transfer layer to the surface of the transferred material. A method for producing a partial mat transfer molded article, wherein the substrate sheet, the release layer and the mask layer are peeled off after being bonded.   The partial mat transfer sheet according to claim 3 or 4 is disposed in a mold such that a surface of a base sheet on which a transfer layer is not formed faces a mold cavity, and a molding resin is poured into the mold, A method for producing a partial mat transfer molded article, comprising peeling off a base sheet, a release layer, and a mask layer after cooling and solidifying a molding resin.

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