JPS6120643B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a button made of thermoplastic synthetic resin such as vinyl or nylon that is connected by a columnar part and whose upper locking part is wider than the lower locking part as shown in FIG. It relates to a method of attaching to clothing made of the same material (for example, a raincoat).

Adhesives can be used to attach vinyl buttons to clothing made of the same material, but today high-frequency welding is generally used as a simple, quick and reliable method of attachment. ing.

In that case, the shape of the button is as shown in FIG. 1, in which the upper button body 1 is connected by the lower flat hem 2 and the columnar part 3 and is integrally molded, and the flat hem 2 is stopped. To attach the garment, a cylindrical high-frequency electrode mold 4 is placed over the button body 1, and the lower annular surface of the mold 4 presses the periphery of the hem 2 against the attachment point of the garment 5, welding it using high frequency. Therefore, the button body 1 needed to be narrower and smaller than the flat hem 2.

However, when a button with such a shape is fastened, the welded part 6 of the hem 2 behind the button body 1
can be seen from the outside, making it look very unsightly.

Therefore, in order to hide the welded portion 6, the hem portion 2 may be sewn into the garment in a bag-stitched manner, but the button body 1 may be sewn into the hem portion 2 as shown in FIG.
It is easier to make the button wider and larger than the above.

In this case, the welding method described above is not possible, so for example, as in Japanese Utility Model Publication No. 40-24217, the hem part and the button body are manufactured separately, and only the hem part is first high-frequency welded to the garment, and then the button body is attached. It has been proposed that the hem be fitted into a columnar part provided integrally with the hem part. However, with this method, it is troublesome to make the button, and it takes time and effort to fasten the button.

The present invention provides a button fastening method that allows easy high-frequency welding of integrally molded thermoplastic synthetic resin buttons, the button body of which has a larger diameter than the hem, to clothing, and provides a good appearance after fastening. It is.

Next, embodiments of the present invention will be described with reference to the drawings.

The thermoplastic synthetic resin button fastened by the method of the present invention has a button body 1 formed into an arbitrary shape and a flat hem 2 connected by a columnar part 3, as shown in FIG. It is integrally formed, and the button body 1 has a larger diameter due to the hem portion 2.

However, in order to attach a button having such a shape to clothing 5 made of the same material, first a plate-shaped electrode mold 7 is used.
Place clothing 5 on top. Next, a plurality of buttons may be placed directly at the button fastening locations of the garment 5, but as shown in FIG. The columnar part 3 is inserted with the button body 1 facing upward into a plurality of long groove-shaped notches 9 provided at the same intervals as the positions, and the plurality of buttons are simultaneously locked to the mold 8.

The notch 9 has a width sufficient to allow the columnar part 3 to be inserted therein, and a protrusion 10 for pressing the flat hem part 2 is formed on the lower surface of the periphery thereof.

Therefore, while the button body 1 is held in place by the notch 9 of the U-shaped mold 8, the flat hem 2 of the button is lowered to the button attachment point of the garment 5, and the protrusion 10 of the notch 9 is used to make the flat hem. The flat hem portion 2 is welded to the garment 5 by applying high frequency current while pressing the portion 2 against the garment 5.

Moreover, FIG. 5 shows a method of high-frequency welding by fixing the U-shaped mold 8 and pressing the garment 5 against the flat button hem 2 using the plate electrode mold 7, contrary to the above method. In this case, the U-shaped mold 8 is placed with the side with the notch 9 facing up, the button body 1 is facing downward, the columnar part 3 is inserted into the notch 9, and the flat hem part 2 is cut. It is engaged on the protrusion 10 of the recessed part 9. Then,
The button fastening portion of the garment 5 and the flat hem portion 2 are aligned, and the plate-shaped electrode mold 7 is pressed from above to pass a high frequency current to weld the garment 5 and the flat hem portion 2.

In this way, according to the present invention, a button made of synthetic resin in which the upper fastening part is wider than the lower fastening part can be easily high-frequency welded to clothing.

Since the present invention fastens the button as described above, the flat hem part 2 of the fastened button is hidden under the larger button body 1 and cannot be seen, so that the button has a good appearance. Moreover, since the buttons of one piece of clothing can be fastened at the same time, it has various advantages such as being able to reduce manufacturing costs.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a button fastening method using the conventional method, Fig. 2 is a perspective view of a button used in the method of the present invention, and Fig. 3 shows a state in which a button is fastened by the method of the present invention. The perspective view, FIGS. 4 and 5 are side views showing different embodiments of the fastening method according to the present invention. Description of symbols, 1...Button body, 2...Flat hem, 3...Columnar part, 4...Cylindrical electrode mold, 5...
...Clothing, 6...Welding part, 7...Plate electrode mold,
8... U-shaped electrode mold, 9... Notch, 10...
Protrusion.

Claims (1)

[Scope of Claims] 1. A button whose upper button body is connected by a columnar part wider than a lower flat hem is inserted into a notch provided at the bottom edge of an electrode mold having a U-shaped cross section. The flat hem of the button and the part of the garment where the button is fastened are pressed by the protrusion formed on the lower surface around the notch and the plate-shaped mold to pass the high-frequency current. Features a fastening method for thermoplastic synthetic resin buttons. 2. Fix the plate-shaped mold, place the garment on it, turn the side with the notch of the U-shaped electrode mold down, and hold the button body upward in the notch while forming the U-shaped cross-section. 2. The method for attaching buttons made of thermoplastic synthetic resin according to claim 1, characterized in that the electrode mold is lowered to perform high-frequency welding between the flat hem portion and the button attachment portion of clothing. 3. Fix the electrode mold having a U-shaped cross section with the side with the notch facing up, lock the button body downward in the notch, and place the attachment point of clothing on the flat hem in a plate shape. A method for fastening a button made of thermoplastic synthetic resin according to claim 1, characterized in that a high frequency current is passed through the button while being pressed by a mold.