DE1811718B2 - METHOD FOR MANUFACTURING COLORED ROLLER FIBERS - Google Patents

Description

The invention relates to a method for producing colored crimped thread from synthetic endless shops according to the false twist method.

When texturing according to the false twist process, there are currently two ways of producing colored crimps. The finished crimp thread will be either after texturing in the strand or in a soft K reuzspulaufmachung (muff) or before Texturing dyed on the cheese. Polyamide and polyester threads are mainly used according to the Texturing colored. The dyeing before texturing leads to deterioration in these threads Failure, as the crystallinity of the material is increased by the heat treatment during coloring and the Thread is shrunk. In contrast, polyacrylonitrile threads are dyed in practice before texturing.

The coloring after texturing is currently with a number of polyamide and polyester threads Operations connected. Highly elastic crimped threads are dyed for highly elastic articles in the strand The high elasticity is not impaired by the coloring, for moderately elastic articles in the cylindrical soft winding, whereby the decrease in the elasticity of the Fadens is advantageous for use in this sector. Moderately Elasi crimped threads, on the false twist machine manufactured can only be dyed properly in special packaging, since the Coloration in the soft winding slightly differences in volume between the inner and outer layers of the Coil generated.

The operations for the production of crimped and dyed highly elastic polyamide and polyester threads for use in highly elastic articles are the following: 1) Spinning on cylindrical cheeses. 2) Stretching on bobbins or cylindrical packages. 3) texturing a highly elastic crimped thread cylindrical cross-wound bobbins, 4) twisting together S- and Z-ruff! -tending threads, 5) production of a skein (max. skein weight approx. 400 g), 6) steaming, 7) multi-thread dyeing, 8) winding, 9) Get ready to go to cones.

Twisting is absolutely necessary before the strand is made up, as it is extremely difficult to do it in the strand To work off single-thread dyed threads, as the material gets entangled and causes problems with the flow.

Moderately elastic crimped threads are required for use in the outerwear sector. here the operations are as follows: 1) Spinning on cyl. Cross-wound bobbins, 2) stretching on cops or cyl. Packages, 3) Texturing a highly elastic crimped thread on zvl. Soft winding (max. Spool weight approx. 600 g),

4) steaming, 5) single thread dyeing with simultaneous reduction in elasticity, 6) rolling unwinding.

These threads do not need to be ply or twisted before dyeing. Should be used for a z. B. on the cotton sector, multi-thread material are required, this is done after the dyeing Ply and twist made. The rolling trigger leads to an increased number of thread breaks.

Moderately elastic crimps can also be used

ίο Special false twist machines with post-heat treatment getting produced. The following steps are necessary for coloring: 1) spinning, 2) stretching, 3) Texturing, 4) production of a special dye spool, 5) steaming, 6) single-thread dyeing (max. Spool weights approx.

800 g), 7) bobbins or, in the case of multi-thread processing, twisting and opening.

Here, too, the processing of the special dye bobbins in single-thread dyeing with increased thread breaks and associated with difficulties. It is therefore also common for multi-thread processing to use the twisting process to be carried out before the manufacture of the special dye spool and to be dyed in a multi-twisted manner.

In all of the procedures described there is one Mixed processing of dyed and non-dyed threads is not possible, as the threads after the Dyeing process are shrunk, while the non-dyed Threads have a residual shrinkage of 4 to 6% depending on the manufacturing conditions.

When coloring before texturing, the exclusive is common with polyacrylonitrile threads. The following operations are currently necessary: 1) Spinning on cylindrical cheese, 2) stretching, 3) shrinking the material. 4) Spools on dye spools (max. Spool weight approx. 1 kg), 5) single thread dyeing. 6) Texturing on cylindrical cheeses as well as for multi-thread processing, twisting and opening.

Here, too, mixed processing of dyed and non-dyed threads is only possible, even if the non-dyed threads were shrunk before texturing.

The object according to the invention is now to provide essential operations in the production of to save dyed crimped thread.

This object is achieved in accordance with the invention.

that the continuous threads emerging from the spinning station are opened into a knitted tube, in the tube dyes, pulls up the tube and then draws the dyed continuous threads and puckered them in a false twist.

This process now also includes mixed processing of dyed and non-dyed threads possible because the residual shrinkage after texturing is the same for both threads. The production of the Hose's necessary knitting machine is located directly under the spinning shaft. The mesh deformation by making it into a knitted tube is eliminated by the stretching process. The coloring can be carried out in a known manner in the packing system as well as in the attachment system. This procedure is particular suitable for polyamide, polyester and polyacrylonitrile threads.

It can be seen from the following examples that this new process brings substantial benefits. By saving the work steps as well as the possibility of mixed processing can be especially with Application of the known type of stretch crimping principle can be shown to be of considerable economic efficiency.

example 1

For use in the knitting sector for Wevenit goods, a polyamide crimped yarn 140 denotes moderate elasticity is required. A spinning denier of 427 den is spun and 10 TIg on a knitting machine. opened directly to a tube of 2 kg. A hose-wrapping is colored in Aufsteckverfahren, the hose mounted and the Endiosfaden on a texturing machine with 2 Texturierzonen at a Verstreckungsvcrrhältnis of 1: 3.2 at 1800 Drehg./min and a temperature of 160 ⁰ C and at 2000 Drehg./min, a temperature of 150 ⁰ C and 4% overfeed and stretched falschdrallgekräuselt.

Example 2

For use in the cotton sector, a moderately elastic crimped yarn made from Polyamid-6, 90 den. 4 ply required. A titer of 315 denier is spun and opened directly in tubular form on a knitting machine. After staining of the continuous thread on a texturing machine with 2 Texturierzonen at 1600 rotations is / min and 150 ^0C in the ratio of 1: 3.12, and then crimped at 3000 DrehgVmin and 160 ⁰ C with 9% overfeed. This material is twisted and knotted together with 4 threads.

Example 3

For use in the sector of highly elastic sock yarns, a 90 denier crimped yarn made of polyamide is required. A spinning liter 315 den is spun and opened up directly in the form of a tube. After the hose has been pulled up, the continuous thread is dyed. After the stretching process in the ratio 1: 3.4 on a conventional stretching machine of the continuous filament with 3000 DrehgVmin at 180 ⁰ C and 6% overfeed is incorrectly rotated.

Claims (1)

Claim: Process for the production of colored crimped thread made of synthetic continuous threads according to the false twist method, characterized in that that one opens the filaments emerging from the spinning station to form a knitted tube, in Dyes the tube, pulls up the tube and then draws and then draws the colored filaments false twist pucker.