KR101048714B1 - Three-dimensional transfer sheet - Google Patents

Abstract

The present invention relates to a transfer sheet having excellent three-dimensional effect used for surface decoration of a synthetic resin molded product, and more particularly, in a transfer sheet having a release layer, a release layer, and an adhesive layer formed on a base sheet, a glass bead layer is formed on the release layer. Forming and forming a metal deposition layer on the glass bead layer is characterized by imparting an excellent three-dimensional feeling.

The transfer sheet according to the present invention is formed on a base sheet and the base sheet on a release layer, a peeling layer, a glass bead fixing binder resin layer, a glass bead partially embedded in the glass bead fixing resin layer, and the glass bead outer surface layer. The metal deposition layer and the adhesive layer which are formed are sequentially formed. In addition, in the transfer sheet according to the present invention, the glass bead layer and the printed pattern layer may be partially formed on the release layer.

The transfer sheet according to the present invention has a glass bead layer is formed is excellent in three-dimensional effect.

Transfer sheet, molding simultaneous transfer, glass beads, solid effect, printed pattern, metal deposition

Description

Transfer sheet having the good cubic effect}

1 is a cross-sectional view of a conventional transfer sheet

2 to 5 are cross-sectional views of the transfer sheet according to the present invention

* Explanation of symbols for the main parts of the drawings

10: base sheet 11: easy adhesive treatment layer

12: release layer 13: release layer

14: printed pattern layer 15: metal pattern layer

16 adhesive layer 27 glass bead fixing resin layer

28: glass beads 29: metal deposition layer

The present invention relates to a transfer sheet having excellent three-dimensional effect used for surface decoration of a synthetic resin molded product, and more particularly, in a transfer sheet having a release layer, a release layer, and an adhesive layer formed on a base sheet, a glass bead layer and It is characterized by excellent stereoscopic effect by further forming a metal deposition layer in turn.

Conventionally, a method of decorating the surface of a synthetic resin molded product by simultaneously inserting a transfer sheet having a release layer, a peeling layer, a printed pattern layer, a metal pattern layer or a metal deposition layer, and an adhesive layer on a base sheet into a mold and molding the same. Has been used. The transfer sheet used in the simultaneous molding method is called a molding simultaneous transfer sheet. For example, in the case of injection molding, the transfer sheet is inserted into the mold so that the adhesive layer is located in the direction of the ejection, and flowed out in a molten state. When the injection molded product is inserted into the adhesive layer of the transfer sheet to be in contact with each other, injection molding is carried out. Finally, the base sheet of the transfer sheet is peeled off (released) from the injection molded product to obtain a synthetic resin molded product having the outermost layer formed of the release layer of the transfer sheet. The base sheet and the release agent layer fall off.

The transfer sheet on which the conventional metal pattern layer or the metal deposition layer is formed has formed a metal thin film on the whole or part of the release agent layer. For example, in the case of metal deposition, using a metal such as aluminum, nickel, don, platinum, chromium, iron, titanium, etc., it is usually formed to a thickness of about 40 ~ 60nm to express the unique color of the metal, metal deposition layer When forming the partially, the surface other than the portion to be deposited is first coated with a water-soluble coating and then deposited, and by washing the water-soluble coating layer with an alcohol / water mixed solvent, metal deposition can be performed only on a desired portion.

There was also a transfer sheet in which a glass bead layer and a metal deposition layer were formed together. For example, 2005.10.06. Japanese Laid-Open Patent Publication No. 2005-271357 discloses a surface protective layer 4, a wood layer 5, and a wood layer 5 including a support sheet 1 and particles 3 on the support sheet. Disclosed is a transfer material comprising a metal thin film layer (6) formed on a planar surface) and an adhesive layer (7) formed on the metal thin film layer (6).

However, the transfer sheet containing the conventional metal pattern layer or metal deposition layer and particles (glass beads) can express the texture of the metal because the metal pattern layer or metal deposition layer is formed on a flat surface, Not only was it lacking, but it also had the disadvantage of not being more refined.

The present invention is to solve the problems of the prior art as described above is to provide a transfer sheet and a manufacturing method excellent in three-dimensional impression.

The present invention is to provide a release sheet, a release layer and an adhesive layer on the base sheet in order, by further forming a glass bead layer and a metal deposition layer on the release layer in order to provide a transfer sheet excellent in three-dimensional impression and its manufacturing method.

Another object of the present invention is to provide a transfer sheet and a method for producing the transfer sheet excellent in three-dimensional effect by consisting of the glass bead fixing resin layer formed on the release layer and the glass beads partially embedded in the glass bead fixing resin layer Is to provide.

Still another object of the present invention is to provide a transfer sheet and a method of manufacturing a printed sheet having various printed patterns as well as being excellent in three-dimensional feeling by forming the glass bead layer and the printed pattern layer on the release layer together. will be.

In the transfer sheet excellent in three-dimensional effect to achieve the above object of the present invention, a release sheet, a release layer, and an adhesive layer formed in turn on the base sheet and the base sheet, characterized in that a glass bead layer is further formed on the release layer. It is done.

The glass bead layer of the excellent three-dimensional transfer sheet according to the present invention is characterized in that the glass bead fixed resin layer formed on the release layer and the glass bead is partially embedded in the glass bead fixing resin layer.

Accordingly, the transfer sheet having excellent three-dimensional effect according to the present invention has a glass sheet composed of a glass sheet partially buried in a release layer, a peeling layer, a glass bead fixing binder resin layer, and the glass bead fixing resin layer on the base sheet and the base sheet. A bead layer and an adhesive bond layer are formed one by one.

In addition, the transfer sheet excellent in three-dimensional impression according to the invention is characterized in that the metal deposition layer is formed on the glass bead layer formed on the release layer.

In the transfer sheet having excellent three-dimensional effect according to the present invention, a glass bead layer and a printed pattern layer may be partially formed on the release layer.

In the transfer sheet having excellent three-dimensional effect according to the present invention, a metal deposition layer may be formed on a printed pattern layer partially formed on the release layer.

The transfer sheet having excellent three-dimensional effect according to the present invention is an anchor layer, an antistatic layer, and among the conventionally known functional layers such as an easy adhesion treatment layer for treating the release agent to be easily attached (attached) to the base sheet. One or more functional layers selected may be further formed.

The excellent three-dimensional transfer sheet according to the present invention can be used in various ways to decorate the surface of the object to be transferred, such as a synthetic resin molded article. For example, the transfer sheet according to the present invention is a conventional transfer method such as a transfer method using a roll transfer machine or an updown transfer machine having a heat-resistant rubber-like elastic body as well as a molding simultaneous transfer method including injection molding. The surface of the transcript can be decorated by the method. In particular, it can be usefully applied as an injection molding simultaneous transfer sheet.

Hereinafter, with reference to the accompanying drawings, a preferred configuration for the excellent three-dimensional transfer sheet of the present invention will be described in detail.

1 is a cross-sectional view of a conventional transfer sheet, wherein a base sheet 10, a release layer 12, a peeling layer 13, and a printed pattern layer 14 and a metal pattern layer 15 on the peeling layer 13 are respectively. A cross-sectional view of a laminated structure partially formed and in which an adhesive layer 16 is sequentially formed on the printed pattern layer 14 and the metal pattern layer 15 is shown.

2 to 6 are cross-sectional views of the transfer sheet according to the present invention, and FIG. 2 shows a base sheet 10, a release layer 12, and a release layer 13 sequentially stacked, and a glass bead layer on the release layer 13 A laminated structure in which a glass bead layer made of a glass bead 28 partially embedded in the wear resin layer 27 and the glass bead fixing resin layer 27 is laminated, and an adhesive layer 16 is sequentially formed on the glass bead layer. It is a section of

3 is a cross-sectional view in which a metal deposition layer 29 is further formed on the glass bead layer in the transfer sheet of FIG.

FIG. 4 is a cross-sectional view of a laminated structure in which the easy adhesion treatment layer 11 is further formed between the base sheet 10 and the release layer 12 in the transfer sheet of FIG.

5, the base sheet 10, the easy adhesion treatment layer 11, the release layer 12, and the release layer 13 are sequentially stacked, and the printed pattern layer 14 and the glass bead layer on the release layer 13 are shown. Are partially formed, and a cross-sectional view of a laminated structure in which a metal deposition layer 29 and an adhesive layer 16 are sequentially formed thereon, and FIG. 6 is a cross-sectional view of a laminated structure in which a metal deposition layer 29 is formed only on a glass bead layer. It is shown.

The base sheet 10 of the transfer sheet according to the present invention is a film (sheet) such as polyethylene-based, acrylic-based, polyvinyl chloride-based, polypropylene-based, polyester-based, polyamide-based, or copolymer thereof such as polyethylene terephthalate resin. Films (sheets) or metal sheets (foils) such as aluminum and copper, films (sheets) such as cellophane can be used, but synthetic resin films (sheets) having good elasticity and moldability are preferred. Polyethylene terephthalate (PET), which is excellent in thermal stability, is preferred because it requires several steps of printing (lamination) or coating. The thickness of the base sheet is preferably in the range of 25 to 50 micrometers (µm) in consideration of the curvature of the object to be transferred or the flexibility in the mold.

The release layer 12 is a layer that is released from the release layer 13 together with the base sheet 10 when the base sheet 10 is peeled off after the transfer. The release layer 12 is easily separated from the release layer 13 on the base sheet 10. Form. As the material of the release layer 12, a silicone resin, an epoxy resin, a melamine resin, a fluorine resin, or the like can be used. As a formation method of a release layer, it can coat uniformly by the microgravure coating method, the lip coating method, etc.

Since the release layer 13 becomes the outermost layer of the molded article after the transfer, a high hardness characteristic that must be strong against external abrasion, friction, and scratching is required. In addition, the transfer sheet should be free from problems such as cracks in the bent portion when transferring to a transfer object having various curved surfaces and molding in the mold. Examples of the resin that meets these characteristics include ultraviolet or electron beam curable resins and thermosetting resins. The release layer forming resin can be used by adding a pigment or dye and coloring it as necessary. The curing method of the release layer-forming resin is a one cure method that is completely cured after coating on the release layer 12 and a partial curing after the coating (generally not fully cured), followed by irradiation with ultraviolet (UV) light again after molding. The dual cure method can be used to fully cure. The coating method of the release layer may be a comma coat, a roll coat, a microgravure coat, a lip coat method or the like.

The glass bead layer of the transfer sheet according to the present invention comprises a glass bead fixing resin layer formed on the release layer and glass beads partially embedded in the glass bead fixing resin layer. The glass bead layer may be partially formed together with the printed pattern layer on the release layer.

The glass bead fixing resin layer 27 of the present invention is formed on the release layer 13. The glass bead fixing resin layer serves to partially fix the glass beads 28. The glass bead fixing resin layer is a two-component thermosetting resin crosslinked with a polyacryl isocyanate having copolymers such as acrylic polyol and acrylate, methyl methacrylate, butyl acrylate, ethyl acrylate, vinyl acetate, and the like having good adhesion. Or a two-component thermosetting resin composition of a polyester polyol and a polyisocyanate. The glass bead fixing resin layer may be formed by a method such as bar coating or comma coating so as to have a thickness of 5 to 10 micrometers (μm) after drying.

The glass beads 28 of the present invention forms the resin layer for fixing the glass beads, and then dried at 60 to 100 ° C. for about 1 minute, and the glass beads prepared in advance as a single layer on the resin layer for fixing the glass beads. After dispersing, it is further dried at a temperature of 100 to 180 ° C. for about 1 minute to embed and adhere about 1/3 to 2/3 of the glass beads to the glass bead fixing resin layer.

The glass beads may be glass beads (glass beads) or polymer beads (polymer beads) as light-transmitting spheres, but polymer beads are preferable, and in particular, the glass beads may be well adhered to the resin layer for fixing the glass beads. Acrylic resin beads that can be used are preferred. The larger the diameter of the glass beads, the better in terms of steric effect, but preferably 4 to 15 micrometers (µm) for transfer, and most preferably around 5 micrometers (µm).

The metal deposition layer 29 of the present invention is formed on the glass bead layer. The metal deposition layer 29 may also be formed on the printed pattern layer partially formed on the release layer. That is, the metal deposition layer 29 may be formed only on the outer surface of the glass bead layer (see FIG. 6) or on the surface of the printed pattern layer including the glass bead layer (see FIG. 5). The metal deposition layer 29 may be formed by a conventional method such as a vacuum deposition method, sputtering deposition method, electron beam deposition method. The metal deposition layer 29 may be made of metal such as aluminum, nickel, copper, gold, platinum, silver, chromium, iron, and titanium to express the unique texture and color of each metal. The thickness is usually 40 to 60 nanometers. (nm) degree. When the metal deposition layer is partially formed, the surface other than the portion to be deposited is first coated with a water-soluble coating, followed by vapor deposition. If the water-soluble coating layer is washed off with an alcohol / water mixed solvent, the metal deposition layer can be deposited on exactly the desired portion. have.

The printed pattern layer 14 of the transfer sheet according to the present invention may be formed partially on the release layer 13 together with the glass bead layer (see FIGS. 5 and 6). The printed pattern layer of the present invention may be formed by a gravure coat, micro gravure coat, or rotary screen coat method using a conventional printing ink made of a resin such as polyester, acrylic, or polyester urethane, which has good adhesion to the release layer. Can be.

The adhesive layer 15 of the transfer sheet according to the present invention is formed on the metal deposition layer and the printed pattern layer. The adhesive layer 15 of the present invention is a transfer surface for forming an adhesive surface directly contacting an injection product flowing in a molten state during molding of a synthetic resin product, for example, in order to facilitate adhesion between the transfer surface and the injection resin. It is a layer for doing so. This adhesive layer is usually applied by diluting a hot melt adhesive to a dilute solvent and applying a conventional coating method such as a roll coating method, a comma coating method, a gravure coating method, a lip coating method, a gravure printing method, a screen printing method, etc. It can be formed by the printing method of. The hot melt adhesive may be used by selecting a suitable thermosensitive or pressure-sensitive synthetic resin according to the material of the adhered material to be molded.

In the transfer sheet according to the present invention, an anchor layer 19 may be further formed to improve adhesion between the release layer and the pattern layer and / or the pattern layer and the adhesive layer as a functional layer. .

In addition, the transfer sheet according to the present invention may be further formed of conventionally known functional layers such as an antistatic layer.

Transfer sheet according to the present invention comprises the steps of preparing a raw material including a base sheet; Coating a release agent on one side of the base sheet to form a release layer; Forming a release layer by coating a synthetic resin solution on the release layer; Forming a glass bead layer on the entire surface of the release layer or partially forming a glass bead layer and a printed pattern layer on the release layer; And a glass bead layer formed on the entire surface of the release layer or a glass bead layer and a printed pattern layer partially formed on the release layer, respectively, to form an adhesive layer.

Forming the glass bead layer of the present invention comprises the steps of: forming a glass bead fixing resin layer on the release layer; Partially embedding and fixing the glass beads to the glass bead fixing resin layer; It includes.

The method for manufacturing a transfer sheet according to the present invention includes forming a glass bead layer on the entire peeling layer or partially forming the glass bead layer and the printed pattern layer, and then forming a metal deposition layer thereon. It may further include;

The method of manufacturing the transfer sheet according to the present invention may further include an easy adhesive treatment step of treating the base sheet by a method such as corona treatment so that the release agent is easily adhered before the release layer forming step.

The transfer sheet according to the present invention as described above can decorate the surface of the various kinds of objects to be transferred in various patterns and colors. For example, the present invention can be applied to various products and shapes such as injection molded articles, extruded molded articles, press molded articles, flat plates, curved plates, rod-shaped articles such as synthetic resin molded products, metal products, wood products, and ceramic products.

[Example]

As the base sheet 10, a polyester film (manufactured by Toray, Japan) having a thickness of 38 micrometers (um) having an easy adhesive treatment layer 11 formed on one side thereof was prepared. Coating the release agent (construction chemistry, Retron 3100) on the surface on which the easy adhesive treatment layer of the base sheet is formed to form a release layer 12, UV curable resin is applied thereon by a microgravure coating method and dried, and then 0.558. It was cured with a metal halide lamp of J / cm 2 to form a release layer 13 having a thickness of 5 micrometers (um). The UV curable resin is composed mainly of a urethane oligomer having an isocyanate functional group and a hydroxyl acrylate resin, and forms a release layer in a semi-cured state by thermosetting, and then UV irradiation after molding. Fully cured.

After the Taeguk pattern is partially printed on the release layer 13 by the gravure printing method, the printed pattern layer 14 is formed to a thickness of 2 micrometers (um) and dried, and then the portion where the printed pattern layer is not formed. In order to form a glass bead layer, a polyester-based adhesive is first coated with a thickness of 2 μm, and an acrylic resin bead having a diameter of 5 micrometers (um) is embedded therein to about 1/2 to 2/3. And hardened to fix. Thereafter, the outer surface of the printed pattern layer except for the outer surface of the glass bead layer to be partially deposited is masked coated with an aqueous coating agent, and then deposited in an evaporator to deposit aluminum metal. After deposition, water and alcohol mixtures were washed with water and alcohol as an aqueous coating agent to leave a metal deposition layer (see FIG. 6) partially deposited on the outer surface of the glass bead layer. Finally, the gravure coating to a thickness of 3um on the printed pattern layer and the glass bead layer using a hot-melt adhesive to form an adhesive layer 16 to prepare a transfer sheet of the present invention.

The transfer sheet prepared according to the present invention was transferred to the outer surface of the water cup made of a resin by a conventional pressurized heating method, and observed. As a result, a three-dimensional impression, as well as a print layer of a glass bead layer and a taiji pattern, were refined. Could.

The transfer sheet of the present invention can form a glass bead layer and a variety of printed pattern layer together, there is a three-dimensional, as well as the glass bead layer and the printed layer is effective to express a variety of printed patterns.

Claims (15)

In the transfer sheet on which a release layer, a release layer and an adhesive layer are sequentially formed on a base sheet and the base sheet, The glass bead layer and the printed pattern layer are partially formed on the release layer, The glass bead layer is composed of a glass bead fixing resin layer and the glass bead partially embedded in the glass bead fixing resin layer, The transfer sheet excellent in the three-dimensional feeling that the glass beads are acrylic resin beads. delete delete delete The transfer sheet having excellent three-dimensional effect according to claim 1, wherein an easy adhesive treatment layer is further formed between the base sheet and the release layer. According to claim 1, Between the release layer and the printed pattern layer; Or transfer sheet excellent in three-dimensional impression that an anchor layer is additionally formed between the printed pattern layer and the adhesive layer. According to claim 1, Between the release layer and the printed pattern layer; And a three-dimensional transfer sheet having an anchor layer further formed between the printed pattern layer and the adhesive layer. The transfer sheet according to claim 1, wherein the metal deposition layer is formed on the glass bead layer and the printed pattern layer partially formed together on the release layer. The transfer sheet according to claim 1, wherein the metal deposition layer is formed only on the glass bead layer partially formed on the release layer. delete delete The transfer sheet according to claim 1, wherein the transfer sheet is an injection molding simultaneous transfer sheet. Preparing a raw material including a base sheet; Coating a release agent on one side of the base sheet to form a release layer; Forming a release layer by coating a synthetic resin solution on the release layer; Partially forming a glass bead layer and a printed pattern layer on the release layer, respectively; And forming an adhesive layer by coating an adhesive on the glass bead layer and the printed pattern layer, each partially formed on the release layer. The manufacturing method of the transfer sheet excellent in three-dimensional feeling in any one of Claims 1, 5-9, and 12. The method of claim 13, wherein the forming of the glass bead layer comprises: forming a glass bead fixing resin layer on a release layer; And a method of manufacturing a transfer sheet having excellent three-dimensional effect, wherein the glass beads are partially embedded and fixed in the glass bead fixing resin layer. 15. The method of claim 13, further comprising: on a glass bead layer prior to forming the adhesive layer; Or forming a metal deposition layer on the glass bead layer and the printed pattern layer.

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