JPH0572855B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for producing an emblem made of thermoplastic synthetic resin and having an appearance similar to a gold molding emblem attached to uniforms, caps, etc.

Conventional technology Currently, uniforms and caps around the world include chest badges, armbands,
Gold mall emblems made of gold and silver decorative thread are used as cap badges, etc., but as they are handmade,
Since the emblems are individually manufactured using an embroidery method, production efficiency is extremely low and they are also extremely expensive, so there is a demand for a gold molding-shaped emblem that has the same appearance and can be mass-produced at a low cost.

As a technology for manufacturing emblem-like plaques, badges, and appliques using thermoplastic synthetic resin films, there are already publications such as Japanese Patent Publication No. 49-27421,
A technique disclosed in Japanese Utility Model Publication No. 50-35993 is known, and the former, as shown in FIG. 4 of this book, has a pressing part C having a pressing blade A and a fusing blade B,
The molded product is pressed with a mold having only a bulging cavity D and subjected to high-frequency dielectric heating, and as shown in FIG. The latter means disclosed in Japanese Utility Model Publication No. 50-35993 is a mold having a fusing blade G, a pressing fusing blade H, and a pressing blade I, as shown in FIG. 6 of this book. By pressing and performing high-frequency dielectric heating, a molded product having grooves J and bulges K and L is obtained, as shown in FIG.

Problems to be Solved by the Invention The techniques disclosed in the above-mentioned publications and similar conventional techniques all involve pressing a pressing blade or a pressing fusing blade to match the outline of the pattern to be formed, thereby causing the pattern to swell. It can be simply welded or welded.

For this reason, according to conventional means, in order to form a fine uneven pattern on the upper surface of a thermoplastic synthetic resin film other than by pressing lines using a pressing blade, it is necessary to form a fine uneven pattern on the thermoplastic synthetic resin film as a raw material. Only embossing must be performed as the first step, and welding to the base material and fusing must be performed as the second step.

According to the above-mentioned means, the thermoplastic synthetic resin sheet expands and contracts due to the influence of heating in the first step, and the positioning with the molding die in the second step becomes inaccurate, resulting in pattern misalignment and failure in the second step. There is a drawback that the fine uneven pattern formed in the first step disappears due to the action of tensile force in the heated state.

For this reason, it has not been possible to produce a gold molding-shaped emblem having threads over the entire surface using conventional means.

Purpose of the Invention In view of the above-mentioned current situation, the present invention provides the following steps:
The object of the present invention is to provide a method for manufacturing a gold molding-like emblem made of a thermoplastic synthetic resin film having threads having a woven fabric-like fine uneven pattern and a decorative thread peripheral portion having the same pattern.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention comprises stacking thermoplastic synthetic resin films on which a metal thin film is formed on the upper surface of a base material and which is provided with a woven cloth-like fine uneven pattern.
From the top of the film, there is an embossed part on which a gold molding thread pattern is engraved, a fusing blade part, and a embossed part deeper than the embossed part between the blade part and the embossed part and on the peripheral edge of the decorative thread. High-frequency dielectric heating is performed by pressing with an engraving mold having a groove portion having a width approximately equal to the width, and the groove portion forms a decorative thread peripheral portion that bulges higher than the molding surface formed by the embossing portion. A structure is adopted that forms a mall thread pattern.

Function Since the present invention has the above-described configuration, the gold molding thread pattern engraved on the embossing part is formed on the surface of the thermoplastic synthetic resin film by the pressing of the embossing part and high-frequency dielectric heating. Since the surface of the thread pattern has a woven cloth-like fine uneven pattern given to the film, the molded surface has the same appearance as an embroidered gold molding.

Simultaneously with the above-mentioned pressing by the embossing part, the fusing blade part bites into the thermoplastic synthetic resin film and melts the film by high-frequency dielectric heating, and welds the film to the base material at the cutting edge part.

Due to the above-mentioned pressing by the embossing part and biting by the fusing blade part, the excess thickness of the thermoplastic synthetic resin film swells slightly along the groove, and is regulated by the width of the groove and is pressed by the embossing part. The woven fabric-like fine uneven pattern on its surface forms a periphery with an appearance similar to the decorative thread periphery of a gold molding.

When removed from the engraving mold after cooling, a gold molding-shaped emblem is obtained which has the color tone and brightness of the metal thin film previously given to the thermoplastic alloy resin film.

Embodiment FIG. 1 is a cross-sectional view schematically showing one embodiment of the present invention, in which woven fabric, felt, In the illustrated example, on a knitted fabric or other desired substrate,
A polyvinyl chloride sheet on which a foamed sheet 2 of thermoplastic synthetic resin is placed, a woven fabric-like fine unevenness pattern 3 is formed on the surface thereof, and a metal thin film 4 which is a metal vapor deposited film exhibiting a golden color is formed on the back surface. A thermoplastic synthetic resin film 5 such as the one shown in FIG.

As shown in FIG. 2, the above-mentioned engraving die 6 includes an embossing part 8 engraved with a gold molding thread pattern 7, a sharp fusing blade part 9, and the embossing part 8 and the fusing blade part 9. The width W of the groove 10 is the same as that of the gold molding emblem 11 shown in FIG.
The width is approximately equal to the width V of the decorative thread peripheral portion 12, and the depth l thereof is longer than the distance between the embossing portion 8 and the cutting edge of the fusing blade portion 9.

Due to the pressing by the above-mentioned engraving die 6 and high-frequency dielectric heating, the thermoplastic synthetic resin film 5 is cut by the biting of the fusing blade part 9, and is welded onto the base material 1 at the cutting edge part, and then by the embossing part 8. The pressed part is molded into the shape of the gold molding thread pattern 7, and the pattern is completed.

Further, the excess thickness of the thermoplastic synthetic resin film 5 caused by the biting of the fusing blade part 9 and the pressing of the embossing part 8 swells into the groove part 10, and the part of the gold molding thread pattern pressed by the embossing part 8 The periphery of the area will protrude slightly higher than the area.

Furthermore, at least on the top surface of the portion of the thermoplastic synthetic resin film 5 that has been pressed by the embossing portion 8 and entered into the groove portion 10 and the portion where the gold molding thread pattern 7 is engraved, there is a pre-formed pattern on the film 5. A woven fabric-like fine uneven pattern 3 remains.

After completing the above steps, the workpiece is cooled and removed from the engraving mold 6.

FIG. 3 is a partially cutaway schematic perspective view of the gold molding emblem obtained by the above-mentioned process, and the part pressed by the embossing part 8 has gold molding thread patterns 13, 14. is surrounded by a decorative thread peripheral portion 12, and the top surface of each has a woven fabric-like fine uneven pattern 15, 16 that has been given in advance to the thermoplastic synthetic resin film 5.
appears and has an appearance similar to a gold mall emblem made using embroidery techniques.

The gold molding emblem 11 shown in FIGS. 1 and 3 consists of a base material 1 and a thermoplastic synthetic resin film 5.
A foamed sheet 2 of plastic synthetic resin is interposed between the two, but this sheet 2 is not necessarily required. shall be used.

Furthermore, although hook-side members 17 and loop-side members 18 of hook-and-loop fasteners are attached to the lower surface of the base material 1, these hook-and-loop fasteners are not necessarily required.

The aforementioned surface fasteners are attached in the next step.

That is, the sheet 19 of the hook side member 17 of the hook-and-loop fastener made of thermoplastic synthetic fibers is placed on the mold stand, which is one electrode of high-frequency dielectric heating shown by the two-dot chain line Y in FIG. The emblem molding sheets 20 on which a plurality of emblems have been molded as described above are stacked one on top of the other, and a distance corresponding to the widths M and N of the emblem peripheral portion 21 shown in FIG. High-frequency dielectric heating is applied at positions O and P to weld the base material 1 and the sheet 19 of the hook side member 17, and then the sheet 22 of the loop side member 18 of the hook-and-loop fastener is attached to the sheet 1.
9, and then connect the base material 1, sheets 19 and 22 along the QR line corresponding to the widths M and N.
The structure shown in FIG. 3 is obtained by cutting out the shape.

Incidentally, the unnecessary portion of the thermoplastic synthetic resin film around the metal molded emblem cut by the cutting blade 9 of the engraving die 6 is removed before the hook-and-loop fastener is attached.

Effects Since the present invention is carried out in the above-mentioned steps, in one step, a thermoplastic synthetic resin film having gold molding threads having a woven fabric-like fine uneven pattern and a slightly higher swollen decorative thread peripheral portion having the same pattern can be produced. This has the effect of easily producing a gold molding-shaped emblem.

[Brief explanation of drawings]

Fig. 1 is an enlarged sectional view schematically showing the processing state in an example of implementation, Fig. 2 is an enlarged sectional view of the engraving mold shown in Fig. 1, and Fig. 3 is an enlarged sectional view of the engraving die shown in Fig. 1. A schematic perspective view showing a part of the gold molded emblem as a cross section, FIG. 4 is a cross-sectional view of a pressing die used in an example of the conventional method, and FIG.
Figure 6 is an enlarged cross-sectional view of the pressing part of the pressing die used in another conventional method, and Figure 7 is the pressing die shown in Figure 6. It is an enlarged cross-sectional view of a decorative piece manufactured using a mold. 1: Base material, 3: Woven fabric-like fine uneven pattern, 4: Metal thin film, 5: Thermoplastic synthetic resin film, 6: Engraving mold, 7: Gold mold thread pattern, 8: Embossed part, 9: Fusing blade part , 10: Groove portion, V: Width of decorative thread peripheral portion, W:
Groove width.

Claims (1)

[Claims] 1 Layer a thermoplastic synthetic resin film on which a metal thin film is formed on the top surface of the base material and a woven cloth-like fine uneven pattern, and from above the film, an embossed part in which a gold molding thread pattern is engraved, and a weld cut. High-frequency dielectric heating is performed by pressing with a metal mold having a blade portion and a groove portion between the blade portion and the embossed portion that is deeper than the embossed portion and has a width approximately equal to the width of the peripheral edge of the decorative thread. A method for manufacturing a gold molding-like emblem using a thermoplastic synthetic resin film, in which the groove portion forms a decorative thread peripheral portion that bulges higher than the molding surface formed by the embossing portion, and the embossing portion forms a gold molding thread pattern. .