JPH08173209A - Shoe - Google Patents

Abstract

PURPOSE: To provide a shoe having a vamp made of hygroscopic natural fibers, hardly stained, and hardly generating a shape collapse or wrinkles even it is repeatedly washed to remove stains. CONSTITUTION: Both surface fabric and back fabric constituting a vamp are treated with a fluororesin, particularly polytetrafluoroethylene.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe which does not lose its shape of a fiber instep having water absorbency and the like, and whose outer surface and inner surface are not easily soiled.

[0002]

2. Description of the Related Art Instep coverings that make up the main part of shoes are natural fibers such as cotton or regenerated fibers, which are superior to other fiber materials in water absorbency, breathability, workability, and texture. Blended fibers of and synthetic fibers are widely used in various shoes.

[0003]

However, since the instep cover made of the two types of fibers has very good water absorption,
Both the inner and outer surfaces of the instep are easily soiled. Therefore, when washing is attempted to remove the soil, it suffers from defects such as shrinking after drying and losing its shape and wrinkles. The present invention aims to overcome the drawbacks of the instep.

[0004]

The present invention comprises an instep and an outer sole attached to the lower surface of the instep, wherein the instep is made of a fiber having both a front cloth and a back cloth that absorb water. It is also characterized by being treated with a fluororesin.

As the water-absorbent fiber, a mixed fiber of natural fiber such as cotton or regenerated fiber such as viscose rayon and synthetic fiber such as polyester fiber is used.
Fluorine resin is polytetrafluoroethylene, poly 3
Fluorinated ethylene chloride, tetrafluoroethylene / 6 propylene copolymer, polyvinylidene fluoride, etc. are used.
Polytetrafluoroethylene is particularly suitable.

[0006]

FUNCTION AND EFFECT According to the present invention, a cloth made of the above-mentioned blended fiber containing natural fibers such as cotton as the material for the instep or recycled fibers is treated by immersing it in a dispersion of fluororesin. Therefore, water repellency (oil repellency at the same time) is imparted, so that even when a child with high activity is wearing it, it is difficult for the outer and inner surfaces of the shoes to become soiled, and when soiled, they may shrink or wrinkle even if washed. Absent. Even the instep covered with such a fluororesin does not impair the inherent functions such as breathability and skin feel given to the wearer.

[0007]

EXAMPLE A woven fabric made of cotton fibers and a woven fabric made of a blended fiber of soot and polyester fibers are dipped in a dispersion of polytetrafluoroethylene, dried, and a sheet of a polyurethane foam having a thin air permeability is interposed between the two. The frame was adhered in the form of dots and the former was used as the front cloth and the latter was used as the back cloth.

[0008] This was cut into an instep shape, sewn with a cotton insole and caliphed, hung on the last, and at the temperature of 20 ° C by a Brookfield viscometer on the outer bottom and the adhesive surface with the lower peripheral tape
A No. 4 rotor was used to apply a mixture of a polyurethane solution having a viscosity of 200 to 1,000 centipoise measured at a rotation speed of 20 RPM and a fluorine-based surfactant.

This is combined with a side mold and a base mold, and measured at a temperature of 190 ° C and a load of 10 kg by an advanced flow tester of a die (LENG / DIA = 2 mm / 1 mm) in the shoe sole forming cavity formed at that time. The outer bottom material mainly composed of ethylene-vinyl chloride copolymer having a melt viscosity of 0.1 to 0.8 ml / see was injection-filled, cooled,
The shoe of the present invention was obtained by stamping.

On the other hand, in the shoe manufacturing method of the present invention, only the outer cloth of the instep is treated with the dispersion of polytetrafluoroethylene, and the unexposed outer cloth is used. The shoe obtained in this way was used as the shoe of Comparative Example 1, and the shoe obtained by using an ordinary instep having neither the surface cloth nor the back cloth treated as the shoe of Comparative Example 2. Each of these 3 types of shoes, 5 pairs of shoes, is put on a boy of 10 to 12 years for 2 weeks, and after being considerably soiled, the steps of washing and drying are repeated 5 times using a commercially available detergent, and the following results are obtained. It was

Appearance Water repellency ^{* 1} Oil repellency ^{* 2} Good shoes of the present invention Good 905 grade or higher Shoes of Comparative Example 1 Slightly wrinkled Table 90 Grade 3 or higher Back 0 〃 Shoe shape collapse and wrinkle occurrence of Comparative Example 2 Table 0 〃 Back 0 〃 * 1: According to JIS L 1092 spray method water repellency test method. * 2: According to AATCC method 118 oil repellency test method.

Claims (3)

[Claims] 1. An instep cover and an outer bottom attached to the lower surface of the instep cover. The instep cover has a front cloth and a back cloth both made of water-absorbent fibers and treated with a fluororesin. Shoes characterized by that. 2. The shoe according to claim 1, wherein the water-absorbent fiber is a natural fiber or a mixed fiber of regenerated fiber and synthetic fiber. 3. The shoe according to claim 1, wherein the fluororesin is polytetrafluoroethylene.