JPS6127042B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel method for manufacturing a shoe cover, in which an opening is provided at the lower end of the cover made of a thermoplastic soft synthetic resin sheet, and the cover is turned over inside out. An insole also made of thermoplastic soft synthetic resin is arranged below, and the lower surface of the insole is high-frequency welded to the periphery of the upper surface of the insole with the incisal edge of the lower opening of the insole facing outward. The above-mentioned welded part between the insole and the lower periphery of the insole is covered with the lower edge of the insole by turning it over to the old shape, and then the outsole made of thermoplastic soft synthetic resin is wrapped around the insole and the lower edge of the insole. It is placed on the lower surface of the above-mentioned welded part of the insole and the inner sole, and its peripheral part is placed on the lower surface of the peripheral part of the insole and the part where the welded part of the insole and the inner sole are covered. The gist is high frequency welding.

Hereinafter, in order to explain an example of the implementation of the present invention, first, a vinyl chloride sheet is used to attach the opening 1 to the upper part of the shoe.
Each has an opening 2 for attaching the bottom at the bottom, and a cutout 4 with a slide fastener 3 facing the opening 1 is formed on the front upper side to form a cover 5, and the inner sole 6 and the entire periphery are made of vinyl chloride upward. The outsole 7 is bent to have a hook-shaped cross section.

Next, after flipping the cover 5 upside down and placing the inner sole 6 on the flat lower electrode A, it is joined to the periphery of the upper surface of the inner sole 6 with the incisal edge of the lower end opening 2 of the cover 5 facing outward. Then, while pressing down the frame-shaped upper electrode, a high frequency voltage is applied to the joint part to weld the part.

After that, by turning the cover 5 over the periphery of the midsole 6 to the old shape, the lower side of the cover 5 is turned over to the middle sole 6.
and the lower circumferential edge of the cover 5, and
Furthermore, the shoe cover 5 and the insole 6 are turned upside down to fit into a lower electrode I' which has a shape in which the sole of the foot is turned upside down, and the lower surface of the insole 6 is positioned on the upper surface of the lower electrode I'. Thereafter, the outsole 7 is placed upside down on top of the outsole 7, and the bulging bent portion 9 on the periphery of the outsole 7 is placed on the inner sole 6.
A finished product is obtained by high-frequency welding the peripheral part and the welding cover 5 to the lower surface of the part 10 that covers the welded part 8 between the welding cover 5 and the inner sole 6.

In this embodiment, a wide air pocket 11 is formed between the midsole 6 and the outsole 7, and this part acts as a cushion when walking, and the outsole 7
The welding between the bulging bent part 9 and the peripheral part of the inner sole 6 occurs when the flesh on the upper surface of the bulging bent part 9 of the outsole 7 melts during high frequency welding and is applied to the pressing action of the upper electrode RO'. Yotsute Yoshihiro 5
This is done by escaping to the inner side 12 of the welded part 8 between the inner sole 6 and the inner sole 6.

Since the present invention is as described above, it goes without saying that a shoe cover having a main sole and an inner sole on the bottom surface can be manufactured very easily. Since the cover is folded in half and integrally welded between the insole and the outsole, the incisal edge of the opening at the lower end of the cover is shaped like a single leaf and is simply welded to the same part. This has various effects such as the welding of the same part is extremely firm and the part is thicker and extremely strong compared to the previous one.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
Figure 2 is a perspective view of a shoe cover manufactured according to the present invention, Figure 2 is a cross-sectional view taken along the line A-A, and Figure 3 shows the welding process of the cover and the insole, corresponding to Figure 2. 4 is a sectional view corresponding to FIG. 2, showing the process of welding the outsole to the sleeve and inner sole. 1... Shoe opening, 2... Opening, 3... Slide fastener, 4... Cut, 5... Folding cover, 6... Insole, 7... Outsole, 8... Welded part, 9... bulging bent portion, 10...enveloping portion, 11... air pocket, 12...
...inner side, a, a'...lower electrode, b, b'...upper electrode.

Claims (1)

[Claims] 1 An opening is provided at the lower end of the jacket made of a thermoplastic soft synthetic resin sheet, the same jacket is turned over inside out, and an insole also made of thermoplastic soft synthetic resin is placed below it, and the lower end of the jacket is turned over. With the incisal edge of the opening facing outward, the lower surface is high-frequency welded to the periphery of the upper surface of the insole, and then the insole is turned over through the periphery of the insole to the old shape, thereby connecting the insole and the insole with the lower edge of the insole. The above-mentioned welded part with the lower peripheral edge of the cover is covered, and then an outsole made of thermoplastic soft synthetic resin is placed on the lower surface of the insole and the above-mentioned welded part between the insole and the cover. A method for manufacturing a shoe cover, characterized in that the part is high-frequency welded to the peripheral part of the midsole and to the lower surface of the part where the welded part of the sleeve cover and the midsole are covered.