JP2006056124A - Substrate film for decoration and decorating method of synthetic resin molded body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate film for decoration and a decorating method of a synthetic resin molded body which enable formation of a coat layer of good quality enabling printing with penetration of a sublimable dye into the material of the synthetic resin molded body, for instance, regardless of the quality of the material and which enable also mass production of the synthetic resin molded body having this coat layer. <P>SOLUTION: The substrate film for decoration is constituted by having sequentially a release layer and at least one dyeing resin layer accepting the sublimable dye on a base formed of a thermoplastic synthetic resin material. In the decorating method of the synthetic resin molded body, this film is inserted into a molding die for in-mold molding wherein the synthetic resin molded body is formed by injecting the synthetic resin material thereinto, and the film is made to adhere integrally to the synthetic resin molded body by the heat of the synthetic resin material injected into the molding die. Then, the base is released from the synthetic resin molded body by the medium of the release layer and the sublimable dye is made to penetrate into the dyeing resin layer by thermal transfer, so as to decorate the synthetic resin molded body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention makes it possible to form a high-quality coat layer that can be printed by infiltrating a sublimation dye without causing a problem with the material, such as a material of a synthetic resin molded body. The present invention relates to a base film for decoration capable of mass-producing a synthetic resin molded body provided with a suitable coating layer and a method for decorating a synthetic resin molded body.

  For example, Patent Document 1 and Patent Document 2 are known as a base material and a decoration method capable of printing a coloring or design on a synthetic resin molded body using a sublimation dye. Patent Document 1 is a plastic dyeing substrate having a sublimation ink receiving layer and a block layer in this order on a support, and the sublimation ink receiving layer and the block layer are peelable from the support, Use liquid sublimable ink and block layer that is less susceptible to sublimation dyes than sublimation ink receiving layer. When plastic is dyed, sublimation from printed substrate support The ink receiving layer and the block layer are peeled off, the sublimable ink receiving layer side is opposed to the plastic, the sublimable ink receiving layer and the block layer are heated, and the sublimation dye is sublimated by this heating, thereby dyeing the plastic. It is to be done.

Patent Document 2 discloses that a transfer sheet is created by recording an image with a recording material containing an evaporable dye on a thermoplastic resin sheet that becomes stretchable by heating, and the transfer sheet is widened. After fixing, heat to make it stretchable, and at the same time, cover the transfer sheet with the plastic product so that the image recording surface faces the plastic product, reduce the gap between the transfer sheet and the plastic product, and turn the transfer sheet into a plastic product At the same time, the transfer sheet is heated in a non-contact manner while being in close contact, whereby the evaporating dye is diffused on the surface of the plastic product to transfer the image.
JP 2003-253573 A Japanese Patent Laid-Open No. 11-254894

  By the way, sublimation dyes are difficult to penetrate into synthetic resin materials such as olefins. It was limited to. For this reason, when it is difficult to print directly on a synthetic resin molding with a sublimable dye, a coating layer such as polyurethane resin is applied to the synthetic resin molding to form a coating layer, and the coating layer is sublimated. Printing was carried out by infiltrating the sex dye.

  However, according to the work of painting, there are problems that bubbles are generated in the coat layer, and sagging occurs depending on the outer shape of the synthetic resin molded body. In addition, many resin paints that are suitable as coating materials are of two-component curing type, and since these undergo curing and change in viscosity during coating, the coating layer is good for mass production. There was also a problem that it was difficult to form with high quality. Furthermore, when forming a coat layer by painting, an organic solvent is used. However, a synthetic resin molded body formed of a thermoplastic synthetic resin material such as polycarbonate is poor in solvent resistance and may form the coat layer itself. There was also a problem that it was difficult.

  The present invention was devised in view of the above-described conventional problems. For example, the material of a synthetic resin molded body can be printed by infiltrating a sublimation dye without causing a problem with the material. It is possible to provide a base film for decoration and a method for decorating a synthetic resin molded body capable of mass-producing a synthetic resin molded body having such a coat layer while being capable of forming a coat layer. Objective.

  The base film for decorating according to the present invention comprises a release layer and at least one dyeable resin layer for receiving a sublimation dye on a substrate formed of a thermoplastic synthetic resin material. To do.

  A permeable resin layer through which a sublimable dye is transmitted is formed between the dyeable resin layer and the release layer.

  The dyeable resin layer is formed to be transparent, and the transparent resin layer is formed to be opaque.

  The dyeable resin layer is characterized in that an adhesive layer is formed on the side opposite to the release layer.

  The method for decorating a synthetic resin molded body according to the present invention is described in any one of claims 1 to 4 in a molding die for in-mold molding in which a synthetic resin material is injected to form a synthetic resin molded body. A step of inserting a decorative base film, a step of integrally bonding the decorative base film to the synthetic resin molded body by heat of a synthetic resin material injected into the mold, and a release layer. A step of peeling the substrate from the synthetic resin molded body, and a step of decorating the synthetic resin molded body by infiltrating a sublimation dye into the dyeable resin layer by thermal transfer. To do.

  The decorating step is characterized in that a printed matter in which a design is transferred and printed with a sublimable dye is prepared in advance, and the sublimable dye is permeated into the dyeable resin layer by thermal transfer from the printed matter.

  The synthetic resin molded body is transparent.

  The synthetic resin molded body is formed of an olefin-based synthetic resin material.

  The synthetic resin molded body is formed of polycarbonate.

  The decorative base film is formed in a long shape and is continuously supplied into the mold for continuous in-mold molding.

  In the decorative base film according to the present invention, for example, a synthetic resin molded body material or the like is formed, and a high-quality coat layer that can be printed by infiltrating a sublimation dye without forming the material problem is formed. can do.

  Moreover, in the method for decorating a synthetic resin molded body according to the present invention, the synthetic resin molded body having a coating layer made of the above-described decorative base film can be mass-produced.

  Below, suitable one Embodiment of the decoration method of the base film for decoration concerning this invention and the synthetic resin molded object is described in detail. The base film for decorating according to the present embodiment is used to form a coat layer serving as a base that allows a sublimable dye to permeate a decorative object to be decorated such as printing. And a release layer formed on the substrate, and a dyeable resin layer formed on the release layer. As a decoration target object, it can apply with respect to the decoration target object of all materials regardless of an inorganic substance and an organic substance. Moreover, the adhesive layer for adhere | attaching the said base film for decorating to a decorating object is formed in a dyeable resin layer on the opposite side to a peeling layer as needed. For example, when both the dyeable resin layer and the decorative object are made of the same material, a high affinity can be obtained between the dyeable resin layer and the decorative object, for example, a synthetic resin decorative object, by a heating operation. When exerting, the adhesive layer may not be provided.

  Moreover, the base film for decoration may be equipped with another additional layer as needed. For example, a plurality of dyeing resin layers having different compositions may be provided. Moreover, in order to provide a color and a pattern partially in advance to the decorative base film, one or more decorative layers to which some design has already been applied may be additionally provided. Moreover, in order to improve the adhesiveness between each layer, you may provide an anchor layer between each layer.

  The thickness of each layer is preferably 10 to 100 μm for the substrate, 1 to 20 μm for the dyeable resin layer, and 0.5 to 50 μm for the other layers. If the dyeable resin layer is too thin, the dye cannot be sufficiently retained, and if it is too thick, the peelability is deteriorated.

  The sheet-like substrate is formed of a thermoplastic synthetic resin material, and for example, polyethylene terephthalate, polybutylene terephthalate, cellophane, or a composite material thereof is employed.

  The release layer is formed of a material that is easily separated from the substrate, for example, a cellulose resin, an acrylic resin, a polyamide resin, a silicon resin, a melamine resin, a fluorine resin, a vinyl chloride resin, or the like.

  The dyeable resin layer is a layer into which a sublimable dye is permeated, and is formed of, for example, a polyester resin or a urethane resin.

  The adhesive layer formed as necessary is, for example, a polyethylene resin, a polypropylene resin, a polyurethane resin, a polystyrene resin, a polyacrylic resin, a polyolefin-based or polystyrene-based thermoplastic elastomer, a chlorinated polypropylene resin, A vinyl chloride vinyl acetate copolymer or the like is used.

  These base films, release layers, dyeable resin layers, and also decorative base films with adhesive layers as needed are gravure coat, knife coat, comma coat, roll coat, reverse roll coat, flow coat, screen printing Etc., etc. Usually created by painting and printing equipment.

  And the base film for decoration created in this way is attached with the adhesive layer facing when the dyeable resin layer and the adhesive layer are formed on the decorative surface of the object to be decorated, Thereafter, the base is peeled through the peeling layer, so that the dyeable resin layer is exposed on the decorative surface of the decoration target. Thereby, the coating layer used as the foundation | substrate for making the sublimation dye conventionally formed by coating infiltrate can be formed in the decorating surface of a decorating target object.

  In this embodiment, it is a base film for decoration provided with a dyeable resin layer that is formed on a substrate via a release layer and is fixed to a decoration object as it is or via an adhesive layer. The structure is such that the dyeable resin layer can be exposed by peeling the substrate through the release layer after being fixed to the decoration object, so that the dyeable resin layer is previously formed on the substrate. Unlike the case where the object to be decorated is painted, there will be no bubbles or sagging, and there will be no unstable elements such as hardening during the painting process. The properties are stable, and even for all materials, especially those with poor solvent resistance, it is possible to appropriately form a layer that allows the sublimation dye to penetrate, that is, the material of the synthetic resin molding can be formed. Print with infiltrated sublimation dye without any problem DOO good quality can be formed coat layer decorative objects can.

  And when performing decoration such as printing with a sublimation dye on the decoration object, the side on which the release layer is formed on the dyeable resin layer exposed on the decoration surface of the decoration object Sublimation dye may be infiltrated.

  You may make it form the transparent resin layer which a sublimable dye permeate | transmits between the dyeable resin layer and a peeling layer with respect to the base film for decorating concerning the said embodiment. This transparent resin layer functions as a protective coating for the dyeable resin layer that is exposed after the substrate is peeled off via the release layer, or is made opaque, for example, a colored layer such as white, thereby making the dyeable resin It can serve as a background for the design with sublimable dyes that have penetrated the layer.

  That is, since the permeable resin layer can permeate the sublimation dye, the sublimation dye can be permeated by infiltrating the sublimation dye from the side where the release layer is formed, as in the above embodiment. It passes through the adhesive resin layer and is fixed to the dyeable resin layer. When decorating a decoration object using a base film for decoration with such a structure, if a transparent material such as transparent glass or transparent synthetic resin material is selected for the decoration object, the transparent decoration By allowing the transparent resin layer to be seen from the dyeable resin layer side through the object, it is possible to obtain a decoration such that a print design with a sublimable dye appears on the colored background.

  The transparent resin layer is formed of, for example, an olefin resin such as polyethylene or polypropylene, a vinyl alcohol resin such as polyvinyl alcohol or polyvinyl chloride, or a fluororesin such as polytetrafluoroethylene or polychlorotrifluoroethylene.

  Next, a synthetic resin molded body that enables mass production of a synthetic resin molded body having a high-quality coating layer by using the above-described decorative base film as a target for a synthetic resin molded body. The decoration method will be described. The decoration method basically includes a step of inserting the above-described decorative base film into a molding mold for in-mold molding in which a thermoplastic synthetic resin material is injected to form a synthetic resin molded body, and molding The step of integrally bonding the decorative base film to the synthetic resin molded body by the heat of the synthetic resin material injected into the mold, the step of peeling the substrate from the synthetic resin molded body through the release layer, and the thermal transfer And a step of decorating the synthetic resin molding by infiltrating a sublimation dye into the dyeable resin layer.

  When a colored transparent resin layer is provided as the decorative base film, it is preferable to employ a transparent material as the synthetic resin molding. Since the sublimation dye can be permeated into the dyeable resin layer of the decorative base film, the synthetic resin molded body that is the object to be decorated may be formed of an olefinic synthetic resin material. Moreover, since a coat layer can be formed with the dyeable resin layer of the said base film for decorating, you may form a synthetic resin molding with a polycarbonate with poor solvent resistance. Further, the decorative base film is formed in a long shape, and is continuously supplied into a mold for continuous in-mold molding.

  The method of decorating a synthetic resin molded body according to the present embodiment is a method of in-mold molding a synthetic resin molded body in a mass production while continuously inserting a conventionally known long film-shaped material into a molding die. The coating layer is formed on a synthetic resin molded body that is used and molded in-mold using the base film for decoration, and the design is printed by thermally transferring a sublimation dye to the coating layer. That is, first, a decorative base film is inserted into a molding die with its dyeable resin layer or adhesive layer facing the injection port of a synthetic resin material.

  Next, a synthetic resin material is injected into the mold from the injection port, and a synthetic resin molded body is molded from the synthetic resin material in the mold. In the molding stage, the dyeing resin layer or the adhesive layer is molded while the base formed of the thermoplastic synthetic resin material is thermally deformed along the mold by the heat of the synthetic resin material to be injected. Adhesion is completed by being brought into close contact with the surface of the molded body. When the synthetic resin molded body molded in the mold and integrated with the decorative base film is removed from the mold, the base is peeled off via the release layer, whereby the coating layer is formed on either side. A synthetic resin molded body in which the dyeable resin layer is exposed is obtained.

  Thereafter, the coating layer of the synthetic resin molded body is decorated with a sublimation dye by thermal transfer. Various known methods can be adopted as a printing method for the coating layer. For example, a print sheet on which a design is transferred and printed with a sublimation dye can be prepared in advance, and the sublimation dye can be infiltrated into the dyeable resin layer by thermal transfer from the print sheet. Specifically, a printing sheet is placed on the dyeing resin layer formed on the synthetic resin molding, and the sublimation dye is dyed on the printing sheet by pressing and heating with a heating roller or a press. In particular, in the case of thermal transfer to a synthetic resin molded body having a three-dimensional surface, the printed sheet is closely attached to the three-dimensional surface by reducing the pressure between the printed sheet and the synthetic resin molded body. There is a method of heating and transferring in a state. In addition, there is also a simple method in which ink jet printing or the like is directly performed on the surface of the dyeable resin layer on the synthetic resin molding, and then thermal transfer is performed by heat dissipation of a heater.

  By the way, in the method for decorating the synthetic resin molded body according to the present embodiment, in forming the thermal transfer coat layer on the synthetic resin molded body that is the object to be decorated with the above-described decorative base film, in-mold By applying the molding technique and forming the decorative base film in a long length, mass production of a synthetic resin molded body having a good quality coating layer can be achieved. Sublimation with a synthetic resin molded body made of a transparent material and a colored transparent resin layer as a base film for decoration. Decorative products displaying designs with sex dyes can be mass-produced. In addition, it is possible to produce decorative products made of olefin resin or polycarbonate resin in mass production.

Claims (10)

  A base film for decorating, comprising a release layer and at least one dyeable resin layer for receiving a sublimation dye in order on a substrate formed of a thermoplastic synthetic resin material.   The base film for decorating according to claim 1, wherein a transparent resin layer through which a sublimable dye is transmitted is formed between the dyeable resin layer and the release layer.   The decorative base film according to claim 2, wherein the dyeable resin layer is formed to be transparent and the transparent resin layer is formed to be opaque.   The foundation film for decorating according to any one of claims 1 to 3, wherein an adhesive layer is formed on the dyeable resin layer on the side opposite to the release layer. Inserting the decorative base film according to any one of claims 1 to 4 into a mold for in-mold molding that injects a synthetic resin material to form a synthetic resin molded body;
A step of integrally bonding the decorative base film to the synthetic resin molded body by heat of the synthetic resin material injected into the mold;
Peeling the substrate from the synthetic resin molding through the release layer;
And a step of decorating the synthetic resin molding by infiltrating a sublimation dye into the dyeable resin layer by thermal transfer.   6. The decorating step includes preparing a printed material in which a design is transferred and printed with a sublimable dye in advance, and allowing the sublimable dye to penetrate into the dyeable resin layer by thermal transfer from the printed material. A method for decorating the described synthetic resin molding.   The method for decorating a synthetic resin molded article according to claim 5 or 6, wherein the synthetic resin molded article is transparent.   The said synthetic resin molded object is formed with an olefin type synthetic resin material, The decoration method of the synthetic resin molded object in any one of Claims 5-7 characterized by the above-mentioned.   The method of decorating a synthetic resin molded body according to claim 8, wherein the synthetic resin molded body is formed of polycarbonate.   The said decoration base film is formed in elongate, and is continuously supplied in the said shaping | molding die for continuous in-mold shaping | molding, The Claim 5-9 characterized by the above-mentioned. A method for decorating synthetic resin moldings.