JP2000106913A - Button and production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a button excellent in a stereoscopic effect internally having the stereoscopic pattern of an undercut by combining a decorative part composed of a transparent base material in which the stereoscopic pattern having an under cut part is formed on the rear side and a main body part in which an attaching part to clothing or the like is formed on the back while holding the decorative part on the side of decorative patterns. SOLUTION: A button 1 is composed of a decorative part 2 and a main body part 3 for holding this decorative part 2. Then, the decorative part 2 is formed from a transparent material and a stereoscopic pattern having an undercut part 4 is formed on the rear side, namely, in the inside. On the other hand, the main body part 3 for holding the decorative part 2 arranges an attaching part 6 which is composed of a hole, to clothing or the like on the back. In order to mold the decorative part 2, a projecting frame composed of a silicon rubber while having the undercut part is held by a holder or the like, after a recessed frame for molding the surface shape of the button is overlapped on the upper surface part of this projecting frame, an acrylic resin is poured from a resin injecting groove into the cavity of these frames as the fluidized transparent resin under a low pressure and heated at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a button which can be attached to various kinds of clothes and other personal belongings for practical use or decoration, and more particularly to a button having a three-dimensional pattern and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, buttons provided with a three-dimensional pattern are provided in a form having no undercut portion, that is, a biting portion due to die cutting in the case of resin molding, except for hand-carved. Yes, and thus the three-dimensional effect was limited and relatively mediocre.

[0003]

SUMMARY OF THE INVENTION The present invention provides a button which is provided with a three-dimensional pattern having the undercut portion and is excellent in a three-dimensional effect, and a method for manufacturing the same. An object of the present invention is to provide a button in which a pattern is formed on the back surface, that is, the inside, instead of the button surface, and which can be seen through from the front surface, and a method for manufacturing the button. As of the present invention, a button having an undercut three-dimensional pattern formed therein is not found at present.

[0004]

Means for Solving the Problems In order to achieve the above object, a first aspect of the present invention relates to a button, which comprises a decorative portion made of a transparent material having a three-dimensional pattern having an undercut portion on the back surface, and the decorative portion. And a main body part holding the decorative pattern side of the part, and further having a mounting part for clothes or the like on the back surface.

According to the first aspect, when the three-dimensional pattern is seen through the surface, an unprecedented three-dimensional effect can be obtained and is novel. Furthermore, clothing cloth or the like is appropriately interposed between the decorative part and the main body. With this configuration, a very novel feeling can be obtained.

A second aspect is the button according to the first aspect, wherein the decorative portion and the main body made of a transparent material contain an antibacterial agent. According to the second aspect, an effect of being sanitary without being polluted by Escherichia coli or the like can be obtained.

In a third aspect, an acrylic resin is used as the transparent material of the button. This claim 3
According to this, a button having excellent transparency and optical characteristics can be provided.

A fourth aspect of the present invention relates to a method of manufacturing the button, wherein a concave frame having a button surface shape is superimposed on a convex frame having an undercut portion made of a heat-resistant elastic material, and a transparent resin is applied between the concave frame at a low pressure. A cast decorative portion is formed, and then the decorative portion is appropriately held by a main body portion having a portion for attachment to clothes or the like.

According to this aspect, since the transparent resin is poured at a low pressure during the molding of the decorative portion, the convex mold formed of the heat-resistant elastic material is not deformed, and the molding is completed after the molding is completed. At the time of removing the decorative part from the convex form, since the decorative part has already been molded and cured, the heat-resistant elastic material constituting the convex form is deformed in accordance with the removal of the molded and cured decorative part. And can be easily removed.

Further, a three-dimensional pattern is formed on the back surface, that is, inside, of the decorative portion by the above method, and it is impossible to attach the decorative portion to clothes or the like as it is. Then, the decorative portion is then held in the main body by fitting it into the main body having an attachment portion to the clothes or the like, or by bonding or the like.

According to a fifth aspect of the present invention, in the method for manufacturing a button, a silicone rubber is used for the configuration of the convex frame. According to the fifth aspect, it is possible to quickly provide a convex mold frame having a hardness that does not easily deform when the transparent resin is poured at a low pressure, but is appropriately deformed when the mold is removed to facilitate the mold removal.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of the button of the present invention, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, FIG. 3 is a partially cutaway perspective view of the decorative part, and FIG. FIG. 5 and FIG. 5 are cross-sectional views showing a molding state of the decorative portion.

FIGS. 1 to 3 show a button according to the present invention. The button 1 of the present invention comprises a decorative portion 2 and the decorative portion 2.
The decorative part 2 has a feature.

That is, the decorative portion 2 is made of a transparent material, and a three-dimensional pattern 5 having an undercut portion 4 on the back surface, that is, inside, is formed. The decorative part 2 having the three-dimensional pattern 5 formed on the back surface cannot be attached to clothes or the like as it is.

Then, the decorative part 2 is held by the main body part 3. The main body 3 is provided in advance with a mounting portion 6 for clothing or the like having a hole on the back surface. In the embodiment shown in the drawings, the main body 3 is made of resin, and the decoration 2 is forcibly fitted and held. The configuration is shown. However, a method such as adhesion may be used.

Next, a method of manufacturing the button of the present invention will be described. As described above, it is difficult to form a three-dimensional pattern having the undercut portion 4 on the back surface of the decorative portion 2 using a conventional mold.

Therefore, in the present invention, a convex frame 7 having an undercut portion 4 made of a heat-resistant elastic material shown in FIGS. 4 and 5 is prepared. Specifically, the convex frame 7 having the undercut is formed by using silicon rubber as the heat-resistant elastic material.

The construction of the convex mold 7 is as follows. First, a master model is constructed by hand engraving, a concave mold is constructed from the master model, and the convex mold made of the silicone rubber is further formed by using the concave mold. A frame 7 is configured. In the drawing, reference numeral 8 denotes a holding portion of the convex frame 7, which is made of aluminum or the like, and has a gas vent hole 9 formed at an appropriate position.

In the drawing, reference numeral 10 denotes a concave frame for forming the surface shape of the button 1 superposed on the upper surface of the convex frame 7. The concave frame 10 has a resin injection groove 11 corresponding to the gas vent hole 9 of the convex frame 7.

As shown in FIG. 5, the decorative section 2 of the present invention is formed by holding a convex frame 7 made of silicone rubber and having an undercut section 4 by the holder 8 or the like. A transparent mold fluidized from the resin injection groove 11 into a space between the concave mold 10 and the convex mold 7, that is, a cavity, is superposed on a concave mold 10 for molding the surface shape of the button on the upper surface of the button 7. Acrylic resin is poured at a low pressure, and further heated.

As a result, the acrylic resin is cured, and after confirming the curing, the decorative portion 2 is taken out from between the convex frame 7 and the concave frame 10. At the time of removal
Although the cured acrylic resin is poured into the undercut portion 4 of the convex frame 7 and cured,
In the present invention, since the convex frame 7 is formed of a heat-resistant elastic material, specifically, silicone rubber, the convex frame 7 is deformed in accordance with the removal of the cured decorative part 2. Therefore, the decorative portion 2 is not damaged.

The button of the present invention constructed as described above, when viewed through the surface, can provide an unprecedented three-dimensional effect and is extremely novel. According to the method of the present invention, the novel button is It can be easily manufactured.

[0023]

According to the button of the present invention, a three-dimensional pattern having an undercut portion is formed not on the button surface but on the back surface, that is, inside, by resin molding. Obtained and novel, according to the manufacturing method of the present invention, the button can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a button of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a partially cutaway perspective view of a decorative portion.

FIG. 4 is an exploded perspective view of a molding frame of the decorative part.

FIG. 5 is a cross-sectional view illustrating a molding state of a decorative portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Button 2 Decorative part 3 Main part 4 Undercut part 5 Three-dimensional pattern 6 Mounting part 7 Convex frame 10 Concave frame

Claims (5)

[Claims] 1. A decorative portion made of a transparent material having a three-dimensional pattern having an undercut portion formed on a back surface, and a mounting portion for holding the three-dimensional pattern side of the decorative portion and attaching to clothes or the like is formed on the back surface. A button comprising a main body. 2. The button according to claim 1, wherein the decorative part and the main body made of a transparent material contain an antibacterial agent. 3. The button according to claim 1, wherein the decorative portion made of a transparent material is an acrylic resin. 4. A concave frame having a button surface shape is superimposed on a convex frame having an undercut portion made of a heat-resistant elastic material, and a transparent resin is poured at a low pressure therebetween to form a decorative portion. A method for manufacturing a button, wherein the button is appropriately held on a base having an attachment portion to clothes or the like. 5. The method for manufacturing a button according to claim 4, wherein the heat-resistant elastic material is silicon rubber.