JPH07329491A - Method for transferring design to material surface to be bent - Google Patents

Abstract

PURPOSE:To easily transfer a design to a material surface and to eliminate the crack of a transfer layer even at a part to be so bent as to allow a material surface to be angular in a method for transferring the design to the surface to be bent. CONSTITUTION:The method for transferring a design to a material surface to be bent comprises the steps of bringing a transfer sheet 10 into close contact with the surface of a material 20 before bending to fix a transfer layer 12 to the surface of the material 20, then bending the material 20 in which a base material film 11 is not peeled together with the sheet 10, and peeling the film 11 after the bending to transfer the layer 12 to the surface of the material 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention transfers a design such as a wood grain pattern to the surface of a bending material that is bent and used as a building material, furniture furniture, decorative plate for household equipment, vehicle parts, etc. It is about the method.

[0002]

2. Description of the Related Art Conventionally, as a method of transferring a design such as a wood pattern to the surface of a bending material formed of plywood or medium fiber compression (MDF) plate, after bending the material surface A method of bringing the transfer sheet into close contact with the material surface, fixing the transfer layer of the transfer sheet to the material surface by operations such as pressurization and heating, and then peeling the base film to transfer the transfer layer having a pattern to the material surface. Is common.

[0003]

However, depending on the shape of the bent material surface, it may not be possible to completely adhere the transfer sheet to the entire material surface. In such a case, the transfer sheet is not transferred. The transfer layer may not be transferred from the sheet to the material surface.

By the way, before bending the material surface for bending, a vinyl chloride sheet (hereinafter sometimes abbreviated as a vinyl chloride sheet) on which a design such as a wood pattern is printed is attached to the material surface. Then, a method of bending the material surface after that is known. Also in the case of transfer, if the design is first transferred to the material surface before bending, and then the material surface is bent, the transfer operation is easy and convenient.

However, since the transfer layer transferred from the transfer sheet is very thin and has a low tensile strength as compared with the thickness of the vinyl chloride sheet, when the material surface is bent after the transfer layer is transferred to the material surface, it is particularly There was a high possibility that cracks would occur in the transition layer at the portion where the tensile stress concentrates due to the bending work so as to be angular.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to easily transfer a design such as a wood grain pattern to the surface of a material for bending, and to bend it so that it is angular. It is an object of the present invention to provide a transfer method to a bending material surface in which there is little risk of cracking in the transition layer even at a portion.

[0007]

In order to achieve the above object, a first method for transferring onto a material surface for bending according to the present invention is a substrate film and a transfer layer adhered and held on one surface of the substrate film. The transfer sheet consisting of and is adhered to the material surface before being bent so that the transfer layer comes into contact with the material surface, the transfer layer is fixed to the material surface, and then the base material film is not peeled off. The surface is bent together with a transfer sheet, and after this bending, the base film is peeled off to transfer the transfer layer to the material surface.

A second method for transferring onto a material surface for folding according to the present invention is the method for transferring onto a material surface according to the above-mentioned first transfer method, before the material surface on which the transfer sheet is closely adhered is bent. It is characterized in that embossing is performed with a transfer sheet interposed.

[0009]

According to the first method of transferring to the material surface for bending according to the present invention, the transfer sheet is brought into close contact with the material surface before forming the transfer layer before bending the material surface. Since it is fixed to the material surface, and then the material surface is bent, there is no trouble as when the transfer sheet is brought into close contact with the material surface after being bent, and a design such as a wood pattern is attached to the material surface. It becomes possible to easily transfer.

Moreover, after fixing the transition layer to the material surface,
Since the base material film is bent together with the transfer sheet on the material surface without being peeled off, the transfer layer fixed to the material surface acts as a base material film even in the part where the material surface is bent to be angular. As a result, the tensile stress is dispersed in the surrounding area, so that cracking is prevented.

Further, according to the second method for transferring onto the material surface for bending according to the present invention, the material surface on which the transfer sheet is closely adhered is embossed before the material surface is bent. It is possible to emboss a surface that cannot be embossed by the method of embossing the material surface after bending the surface (such as the surface that will be pulled inward when bent). It is also possible to apply embossing uniformly over the entire surface.

Moreover, since the embossing of the material surface is performed with the transfer sheet interposed, unlike the method of embossing after peeling the base film, it is possible to damage the material surface during embossing. It can also be prevented.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 5 are diagrams showing, in order, the outline of a method of transferring onto a bending material surface according to an embodiment of the present invention. The illustrated transfer sheet 10 is for thermal transfer, and includes a base film 11 made of plastic and a transfer layer 12 attached to the lower surface of the base film 11, and has a predetermined length in the direction perpendicular to the paper surface. Have Specifically, the transfer layer 12 is a release layer attached to the lower surface of the base film 11,
It is composed of a wood pattern layer printed on the lower surface of the release layer and an adhesive layer attached to the lower surface of the wood pattern layer.

The folding material 20 shown in the figure is a medium density fiber (MDF) material formed in a plate shape and has a length substantially the same as that of the transfer sheet 10 in the direction perpendicular to the paper surface. There is. For convenience of explanation, the base film of the transfer sheet 10 is used.
The thickness of 11 and the transition layer 12 are shown in a much larger scale than the thickness of the material 20.

The procedure for transferring the woodgrain pattern onto the surface of the material 20 using the transfer sheet 10 will be described below. First, as shown in FIGS. 1 and 2, the transfer sheet 10 is brought into close contact with the material 20 so that the transfer layer 12 contacts the upper surface of the material 20, and then the transfer sheet 10 is heated and directed toward the material 20 from above. And pressurize to melt the adhesive layer of the transition layer 12 and fix the transition layer 12 to the upper surface of the material 20.

After fixing the transition layer 12, the base film 11
A groove for bending that extends in a direction perpendicular to the paper surface is formed on the lower surface of the material 20 without peeling. In this example, V for 90 degree bending
A V-shaped groove 21, a V-shaped groove 23 for bending at 45 degrees, and a bending bending groove 24 including a plurality of saw-tooth grooves 22 arranged in parallel are formed. In addition, the transfer layer 12 should not be damaged.
Between the groove 12 and each groove 21, 22, 23, a predetermined thickness (for example 0.2
mm) and a material having a width similar to this thickness 20
Is set to remain.

After forming the grooves 21, 22, and 23, as shown in FIG. 4, the material 20 is applied to the grooves 2 without removing the base film 11.
While being bent at the portion where 1, 22, 23 are formed, it is attached to the surface of the core material 30 with an adhesive.

After the bent material 20 is attached to the surface of the substrate 30, the substrate film 11 is peeled off to transfer the transfer layer 12 from the substrate film 11 to the surface of the material 20 as shown in FIG. By doing so, the transfer of the wood pattern to the upper surface of the material 20 is completed.

Next, an embodiment in which the transfer layer 12 of the transfer sheet 10 is fixed to the upper surface of the material 20 and then the upper surface of the material 20 is embossed will be described.

FIG. 6 is a diagram showing the procedure of embossing. As shown in FIG. 6, in the embossing process, the transfer sheet 10 is brought into close contact with the upper surface of the material 20 and pressed and heated to fix the transfer layer 12 to the upper surface of the material 20, and then the plate-shaped pressing die 40 is attached to the transfer sheet.
This is done by pressing the upper surface of the material 20 through 10. In this example, the lower surface of the stamp die 40 is provided with a large number of projections 41 that are shaped like a vascular bundle and appear on the cut surface of the natural material.
By pressing against the upper surface of the material 20, a large number of vascular-shaped recesses are formed on the upper surface of the material 20. After embossing, the material 20 is processed according to the procedure shown in FIG. 3 to FIG. 5, and the wood grain pattern is transferred to the upper surface of the material 20,
A large number of vascular-shaped recesses are formed, and the texture is close to that of natural wood.

Although the embodiments of the present invention have been described above, the present invention is not limited to the specific modes of the embodiments, and various modifications can be made.

For example, it is possible to transfer not only the wood grain pattern but also various patterns to the bending material surface. The bending material is not limited to the MDF material, but plywood, a plastic plate, a metal plate, or the like can be used.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a transfer method to a bending material surface according to an embodiment of the present invention.

FIG. 2 is a diagram showing an outline of a transfer method to a bending material surface according to an embodiment of the present invention.

FIG. 3 is a diagram showing an outline of a transfer method to a bending material surface according to an embodiment of the present invention.

FIG. 4 is a diagram showing an outline of a transfer method onto a bending material surface according to an embodiment of the present invention.

FIG. 5 is a diagram showing an outline of a transfer method onto a bending material surface according to an embodiment of the present invention.

FIG. 6 is a diagram showing an outline when embossing is performed on a bending material surface.

[Explanation of symbols]

 10 Transfer sheet 11 Base film 12 Transfer layer 20 Bending material 30 Core material 40 Stamping die

Claims (2)

[Claims] 1. A transfer sheet comprising a substrate film and a transfer layer adhered and held on one side of the substrate film, the transfer layer being in contact with the material surface before being bent. To adhere the transfer layer to the material surface, and then bend the material surface together with the transfer sheet without peeling the base material film, and peel the base material film after this bending processing. And then transferring the transfer layer to the material surface. 2. The folding process according to claim 1, wherein the material surface to which the transfer sheet is closely adhered is embossed on the material surface via the transfer sheet before the bending process is performed. Transfer method to material surface.