Process and apparatus for treating synthetic filament groups

Claim 2

The apparatus of claim 1, wherein the first and second drier means are sieve drum driers, each of which contains at least one sieve drum means subjected to a suction draft.

Claim 3

The apparatus of claim 1, wherein the first and second drier means comprises a steaming chamber containing a conveyor belt as the conveying means.

Claim 4

The apparatus of claim 1, wherein the first and second drier means comprises a chamber-containing heated cylinders as the conveying means.

Claim 5

The apparatus of claim 1, wherein a crimping means is provided after the washing unit in front of the second drier means.

Claim 6

The apparatus of claim 6, wherein a rocking roller control is provided in front of the crimping means.

Claim 7

The apparatus of claim 1, wherein the washing unit comprises sieve drum bowls containing sieve drums subjected to a suction draft.

Claim 8

The apparatus of claim 1, wherein the drawing means comprises a plurality of roller means.

Claim 9

The apparatus of claim 1, wherein the drawing means comprises a plurality of heated roller means.

Claim 10

The apparatus of claim 1, wherein the drawing means comprises first and second drawing elements with a heating duct disposed between said drawing elements.

Claim 11

The apparatus of claim 11, wherein the first and second drawing elements contain a plurality of roller means.

Claim 12

The apparatus of claim 11, wherein the first and second drawing elements contain a plurality of heated roller means

Claim 13

In a process for the continuous pad-dyeing or printing of endless synthetic filament groups with dyestuffs which become fixed under the influence of heat which comprises drawing a plurality of filament groups from a creel and combining them into one or more tows, impregnating said tows with a dyestuff preparation, heating said tows to fix said dyestuff, drawing said tows and subsequently washing, reducing and finishing the tows, drying the tows and packing said tows into a container, the improvement which comprises drawing the tows prior to washing, thereby removing at least part of the unfixed dyestuffs and auxiliary agents in the drawing step rather than in the washing step.

Claim 14

The process of claim 14, wherein the synthetic filament groups are polyester fibers.

Claim 15

The process of claim 14, wherein the dyestuff is fixed at a temperature of about 170*-230* C.

Claim 16

The process of claim 14, wherein the tows are crimped before the last drying stage.

Claim 17

The process of claim 17, wherein the tows are dried at a temperature higher than the fixation temperature to set the crimp.

Claim 18

The process of claim 14, wherein during the drawing stage the tows are conveyed over-heated-conveying surfaces to at least partially fix the dyestuff.

Claim 19

The process of claim 14, wherein tHe tow is drawn at a ratio of about 1 to 4. 21 The process of claim 14, wherein the dyestuff is fixed under the influence of heat by drawing the heated treatment medium through the synthetic filament groups while it is being conveyed on the surface of at least one sieve drum means subjected to a section draft.

Claim 20

The process of claim 14, wherein the drying of the tows is effected by drawing the heated treatment medium through the synthetic filament groups while it is being conveyed on the surface of at least one sieve drum means subjected to a suction draft.

Claim 21

The process of claim 14, wherein the tow is drawn on the surface of at least one roller means, conveyed through a heating duct and again drawn on the surface of at least one roller means.