Process for the heat-setting of padded or printed continuous synthetic filament groups
AssigneeVepa AG
InventorHeinz Fleissner
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a process for the continuous pad-dyeing or printing of continuous synthetic filament groups with dyestuffs which are set under the influence of heat. More particularly, the present disclosure is directed to a process for the continuous pad-dyeing of synthetic filament groups wherein a heated treatment medium, for example air, is passed through the filament groups which have been printed or padded with the preparations containing the dyestuffs. By drawing heated air through the material being treated a completely uniform drying of the filament groups and also a uniform dyestuff setting is obtained and a migration of the dyestuffs is substantially avoided.
Claims15
A process for the continuous pad-dyeing or printing of groups of continuous filaments with disperse dyestuffs which set under the influence of heat, said filaments being selected from the group consisting of synthetic filaments selected from the group consisting of polyolefins, polyamides, polyesters, phenolic resins, polyvinyl materials, acrylate resins, and blends thereof and blends of said synthetic filaments with cellulose filaments, which comprises padding or printing the filament groups with a treatment liquor containing said dyestuffs, conveying said groups over at least one sieve drum means subjected to a suction draft, said sieve drum means being rotatably mounted in a treatment chamber, and drawing a gaseous treatment medium which has been heated to a temperature of about 170.degree.- 230.degree. C. through the filament groups by said suction draft, said gaseous treatment medium being selected from the group consisting of hot air and a steam-air mixture and said filament groups being in the form of tows or top slivers.
A process for the continuous pad-dyeing or printing of continuous polyester filament groups which comprises impregnating the filament groups with disperse dyestuffs, drying and setting the dyestuffs on the filament groups by conveying said filament groups on at least one sieve drum means rotatably disposed in a treatment chamber and subjected to a suction draft and by drawing a gaseous treatment medium which has been heated to a temperature of about 170.degree.-230.degree. C. through said filament groups on said sieve drum means, removing said filament groups from said sieve drum means, washing out the unfixed dyestuffs and drying the dyed filament groups, said gaseous treatment medium being selected from the group consisting of hot air and a steam-air mixture and said filament groups being in the form of tows or top slivers.
Dependencies are inferred from the claim text.