Fabric shoe outsole manufacturing methods by electrostatic flocking
View Patent ↗A shoe having a fabric outsole and method for manufacturing are disclosed. In described embodiments, a shoe outsole with a bottom surface wherein an adhesive is applied to at least a portion of the bottom surface of the shoe outsole and a plurality of fibers are embedded within the adhesive. In the described method embodiment, once the adhesive is applied to the outsole, fibers are sifted down through an electrostatic field onto the adhesive. Once sufficient fibers have been embedded, the adhesive is cured and then cooled.
1. A method for applying fibers to a shoe outsole, the method comprising:
applying an adhesive to a first region of a bottom surface of the shoe outsole;
placing the shoe outsole on top of a support plate, the bottom surface facing upward;
providing a screen above the support plate;
creating an electro-static field in a region above the support plate;
drawing a plurality of fibers through the screen wherein the fibers are charged and gravitationally drawn toward the support plate due to the electro-static field region, the fibers continuing downward through the electro-static field region until at least some of the fibers become embedded into the adhesive;
removing the support plate with the shoe outsole; and
curing the adhesive with the embedded fibers therein.
2. The method of claim 1 wherein a second region of the bottom surface of the shoe outsole is masked off before applying the adhesive.
3. The method of claim 1 further comprising a sifting device located above the screen wherein the electric field region is created between the screen and the support plate and the fibers are sifted downward toward the screen.
4. The method of claim 3 wherein power is supplied to the screen before the support plate is placed under the conductive screen.
5. The method of claim 3 wherein the fibers are electro-statically charged as they pass through the screen and thereafter become substantially aligned with the electro-static field.
6. The method of claim 3 , further comprising a sifting motor coupled to the sifting device for actuation thereof.
7. The method of claim 1 wherein the fibers, upon impact with the adhesive, are substantially normal to the first region of the bottom surface of the shoe outsole.
8. The method of claim 1 wherein the curing of the adhesive is accomplished by placing the support plate with the shoe outsole into an oven.
9. The method of claim 1 , further comprising the support plate having a plurality of rollers for moving the support plate under the screen.
10. The method of claim 1 wherein the fibers are comprised of textile material.