System for drying of a water dispersion glue on shoe uppers and/

Details System for drying of a water dispersion glue on shoe uppers and/ System for drying of a water dispersion glue on shoe uppers and/

1988-10-07

1990-03-27

Bennet, Henry A.

Boot and shoe making

Sole machines

Laying and/or leveling

12142RS, 34 15, 34 92, A43D 8900

Patent

active

049108220

ABSTRACT:
The device is intended to dry the glue (containing polyurethane, neoprene, natural or synthetic rubber or mixtures thereof) after it has been spread on shoe uppers and/or soles. The device can be included in a system which includes carding, spreading and reactivation of the parts in order to press them together. The device comprises one or more vacuum chambers into which the shoe uppers and soles to which a water dispersion glue has previously been applied are fed, the vacuum chamber being subject to heat and decreased pressure under conditions to produce rapid evaporation of water and drying of the glue. The temperature can be fixed beforehand and increased by a source of heat.

REFERENCES:
patent: 2549981 (1951-04-01), Maeser et al.
patent: 3773054 (1973-11-01), Clark
patent: 4703533 (1987-11-01), Barma

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