Method for stiffening shoe uppers

Details Method for stiffening shoe uppers Method for stiffening shoe uppers

1976-07-02

1978-03-28

Lusignan, Michael R.

Boot and shoe making

Processes

Miscellaneous parts

427389, 428241, 428325, A43D 8700, B05B 302

Patent

active

040806804

ABSTRACT:
Stiffening method in which the strength, stiffness and application properties of thermoplastic synthetic polymer resin stiffening material are improved through combination with the resin of controlled proportions of glass microspheres and the composition is applied as a layer in molten condition on the portion of a shoe upper to be stiffened and is hardened by cooling.

REFERENCES:
patent: 3316139 (1967-04-01), Alford et al.
patent: 3316573 (1967-05-01), Chaplick et al.
Solid Glass Spheres, Potters Industries, Inc.
Spherical Glass Fillers, Otto R. Strauch, 1969, Potters Industries, Inc.
Sphere-Filled Plastic Composites Theory, Testing, Applications, Potters Industries, Inc.

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