Treatment apparatus for chemical modification of animal...

Leather manufactures – Machines

Reexamination Certificate

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Details

C069S027000, C069S028000

Reexamination Certificate

active

06964182

ABSTRACT:
A mechanism, giving less environmental load, for treating animal fibers of a continuous web form so as not to spoil inherent properties of the animal fibers such as hand-feeling and water repellency, so as to improve resistance to felting (shrinkage) and pilling. The mechanism includes: a tank filled with a treatment liquid; a net-conveyor having upper and lower mesh belts put one upon the other to sandwich the continuous web form therebetween for conveying the web form through the liquid of the tank; a treating-liquid circulation system including a gas-liquid mixing pump connected to a suction-port in the tank and pumping out the liquid, a static mixer connected downstream of the pump, and a discharge nozzle placed at a position in the tank facing the suction-port with the mesh belts therebetween, the discharge nozzle being connected downstream of the mixer; and an ozonizer for supplying ozone gas into the system.

REFERENCES:
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“Continuous Shrink-Resist Process of Wool Top Silver With Ozone I Performance”, Tadashi Karakawa et al, published in “Sen'I Gakkaishi” 2002, vol. 58-4, issued on Apr. 10, 2002 (English Abstract and partial translation).

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