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US 4,300,251 AGranted
Method for bleaching and dyeing spooled threads
AssigneesCentre Scientifique et Technique de l'Industrie Textile Belge, en abrege: "Centexbel", Santens", Societe de Personnes a responsabilite Limitee
InventorsLieven J. M. E. Santens, Robert M. Vander Beke
Life of this patent
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Abstract
The method comprises the steps of impregnating spooled threads with a cold treatment liquid inside a kier, leaving an air cushion above the liquid inside the kier, discharging the liquid from the kier through a liquid discharge outlet by feeding steam above the air cushion, stopping the discharge when the steam reaches the liquid discharge outlet, and treating the spooled threads with steam inside the kier.
Claims2
A method for treating spooled threads comprising the steps of
- impregnating the spooled threads with a cold treatment liquid inside a kier, leaving an air cushion above the liquid inside said kier,
- discharging the liquid from the kier through a liquid discharge outlet by feeding steam above the air cushion,
- stopping the discharge when the steam reaches the liquid discharge outlet,
- and
- treating the spooled threads with steam inside the kier.
2 more elements
Dependencies are inferred from the claim text.