METHOD AND INSTALLATION FOR PRODUCING A TWISTED SYNTHETIC YARN

1 . A method for producing a twisted or cabled synthetic yarn, comprising the steps of:

producing with at least one spinneret in a spin-drawing installation continuous filaments from a liquid plastics material or granular material and then producing at least one yarn from at least two continuous filaments;

inputting the at least one yarn into a treatment apparatus;

transferring the yarn from the treatment apparatus, without interruption, to a twisting/cabling apparatus, via a collection and transport apparatus; and

buffering a predetermined length of the at least one yarn in the collection and transport apparatus in order to compensate for a production difference between the spin-drawing installation and the twisting/cabling apparatus.

2 . (canceled)

3 . The method according to claim 1 , wherein the transferring step includes transferring at least two yarns by the collection and transport apparatus from the spin-drawing installation to the twisting/cabling apparatus.

4 . The method according to claim 1 , wherein the transferring step includes transferring at least two yarns from the treatment apparatus to a delivery apparatus for relaxing and transferring the at least two yarns in a form of a yarn or a plurality of yarns on the collection and transport apparatus to the twisting/cable apparatus.

5 . The method according to claim 1 , including treating the at least one yarn in an atmosphere of hot steam or conditioned gas while the at least one yarn is transferred from the spin-drawing installation to the twisting/cabling apparatus.

6 . The method according to claim 1 , including guiding the at least one yarn out of the spin-drawing installation at a speed of from 10 m/min to 600 m/min.

7 . The method according to claim 1 , including inputting the at least one yarn into the twisting/cabling apparatus at a speed of from 10 m/min to 500 m/min.

8 . The method according to claim 1 , further including the at least one yarn guided inside the collection and transport apparatus by one of a temperature-controlled drum, cylinders or rows of deflection rollers.

9 . The method according to claim 1 , wherein the delivering step includes relaxing the at least one yarn by a delivery apparatus including at least one transport roller assisted by steam of or conditioned gas.

10 . The method according to claim 4 , including using a controller for adapting a production speed of each of the delivery apparatus, and the twisting/cabling apparatus to a current buffer capacity of the collection and transport apparatus, and vice versa.

11 . An installation for producing a twisted or cabled synthetic yarn, comprising:

a spin-drawing installation including at least one spinneret configured to produce continuous filaments from a liquid plastics material or granular material by the at least one spinneret and then to produce at least one yarn from at least two continuous filaments;

a treatment apparatus downstream of the spin-drawing installation for treating the at least one yarn;

a collection and transport apparatus; and

a twisting/cabling apparatus downstream of the collection and transport apparatus;

wherein the installation is configured to transfer the at least one yarn without interruption from the spin-drawing installation to the twisting/cabling apparatus; and

wherein the collection and transport apparatus is configured to compensate for a difference in a production speed between the spin-drawing installation and the twisting/cabling apparatus.

12 . The installation according to claim 11 , further including a delivery apparatus to deliver the at least one yarn from the treatment apparatus.

13 . (canceled)

14 . The installation according to claim 11 , wherein the collection and transport apparatus comprises a revolving belt.

15 . The installation according to claim 11 , wherein the collection and transport apparatus comprises a drum including a thread guide.

16 . The installation according to claim 11 , wherein the collection and transport apparatus comprises adjustable cylinders to adjust a distance from one another.

17 . The installation according to claim 11 , wherein the collection and transport apparatus comprises an adjustable buffer including two rows of deflection rollers with a distance between the rows that is adjustable.

18 . The installation according to claim 11 further including a housing in which collection and transport apparatus is arranged and which is configured to be filled with hot steam or conditioned gas.

19 . The installation according to claim 11 , further including a controller configured to adapt a production speed of the spin-drawing installation and of the twisting/cabling apparatus to a current buffer capacity of the collection and transport apparatus, or to reconcile a difference between a production speed of the spin-drawing installation and of the twisting/cabling apparatus.

20 . The installation according to claim 19 , wherein the controller is part of a system as a whole consisting of the spin-drawing installation and of the collection and transport apparatus.