JPS5834122B2 - Manufacturing method for vinyl shoes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing vinyl and synthetic shoes.

Conventional vinyl shoes on the market have seams at the instep, toe, etc., and water tends to leak from the four seams, which is undesirable.

In order to eliminate water leakage, it is necessary to eliminate seams, but even if vinyl shoe materials are heated and molded, the lining is woven, so they do not expand or contract, so they do not form as expected, and even if they are temporarily deformed, they do not expand or contract. It returns and cannot be used as shoes.

Therefore, seams are required at the toe, instep, heel, etc.

Rubber boots are made by placing fabric socks in a mold and pasting together cut rubber sheet parts.The material is completely different from vinyl, so the manufacturing method is also different, and the finished shoes can be heavy.

The present invention provides a method for manufacturing lightweight vinyl and synthetic leather shoes and vinyl and synthetic leather shoes suitable for manufacturing vinyl boots, and is a method arrived at as a result of numerous trial productions.

Products made using this method only have seams at the button and rear seams where they connect to the sole of the shoe, and these parts are fully lined thickly, and the lower part (heel) is hardened with hot melt, so it is water-resistant. There is no need to worry about leakage.

An embodiment of the present invention will be described with reference to the drawings. In FIG. 1A, the vinyl and synthetic leather shoelace material is made up of a vinyl sheet 1 and a lining 2.

5 is an adhesive.

Conventional lining materials use woven cloth for the lining 2, but in the present invention, this is made of knitted cloth.

Knitted fabric is not a woven fabric, but a knitted fabric, and if knitted fabric is used, it has the property of stretching in that direction even if it is pulled.

In the present invention, knitted fabrics such as stockinette, jersey, and tricot are represented by the expression stockinette fabric.

That is, as shown in FIG. 1B, the present invention first attaches the knitted fabric 3 to the back side of a flat vinyl sheet with an adhesive, and then applies the knitted fabric 3 via a hardening agent 4.
Paste.

The curing agent 4 has a special component, and is a viscous liquid of Troll solvent having a solid content of about 40 ml, which is used to eliminate reversion after heat molding.

As described above, in the present invention, a double lining is constructed by laminating a double layer of knitted fabric to a lining material with a knitted fabric attached to the back side via a hardening agent.

Thereafter, this is cut out into a shape that will become the outer skin of a shoe as shown in FIG. 2A, and a curved surface as shown in FIG. 2B is formed from a flat piece using a creeping machine.

A creeping machine is a machine that pressure-forms the cladding material by heating and applying pressure at a temperature of 150° or less, at which the cladding material does not change in quality, for 5 to 20 seconds. The shoe material deforms, and when the rolling is released, it returns within the limits of the shape to provide an elegant shoe shape.

Looking at the condition of the lining, it is made of knitted fabric, so it is stretchable, and the stitches stretch and contract along the pattern, so it is not unreasonable at all.

Comparing this with the conventional one, the conventional one is made of woven fabric, so the warp and weft threads are stretched (11), making it inflexible.The vinyl sheet itself wrinkles where it should shrink, and cracks where it should stretch. resulting in incomplete deformation,
Moreover, it does not become the skin of shoes that have commercial value.

Therefore, one shoe had to be formed by sewing together several sheet pieces.

As explained above, the present invention constitutes a double lining by further adhering a knitted material to the back surface of a flat vinyl sheet with a knitted material pasted through a hardening agent. This method of manufacturing vinyl shoes is characterized in that a vinyl shoe material with a heavy lining is heated and rolled in a creeping machine to form a sheath shape, and the molded leather material is used to manufacture shoes. This is completely different from the manufacturing method for vinyl shoes, and the hardness of vinyl sheets is usually a blending ratio of vinyl chloride and plasticity of 80.
The hardness of the present invention is 85 degrees to 90 degrees.
It is thought that it is most suitable to adopt a grade of 10
When the temperature exceeds 0 degrees, it becomes too soft and is of no use.

It is preferable to use PVC sponge leather for the rolled vinyl sheet.

As described above, the present invention is able to produce seamless vinyl shoes based on experience, and by perfecting the seal only at the sole and the rear seam, it is possible to provide extremely excellent shoes.

[Brief explanation of drawings]

Figure 1A is a cross section of a conventional jacket material, Figure 1B is a cross section of the same jacket material according to an embodiment of the present invention, Figure 2A is a plan view of the jacket material, and Figure 2B is a cross section of the same jacket material. FIG. 3 is a perspective view of the skin material after creeping processing. 1... Vinyl sheet, 2... Lining, 3... Stockinette fabric, 4... Hardening agent, 5... Adhesive.

Claims (1)

[Claims] 1 A double lining is formed by attaching a knitted fabric to the back side of a flat vinyl sheet, and a knitted fabric is further attached via a hardening agent, and the fabric has the double lining. A method for manufacturing vinyl shoes, which comprises heating and rolling the material in a creeping machine to form it into a sheath shape, and manufacturing shoes using the molded sheath material.