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Quality friezed yarns are economically produced on SUPERBA's MF/2 and MF/4:

MF/2: Friezed yarns.

MF/4: More production for any yarn quality and count .


MF/2
The use of frieze yarns is presently going through an important development in the carpet field under the form of single, plied or cabled yarns, in Spun fibres or BCF multi-filaments and this, under a huge range of friezing densities. SUPERBA's MF2 friezing machine treats all these types of yarns more economically than the traditional methods and opens the path to the creation of new carpet qualities.

Advantages of the process

  • Reduction in the frieze yarn production costs
  • Increased production capacity
  • Better development of the yarns crimp
  • Creation of new carpet qualities of high fastness

Running principles

To carry out such yarns, SUPERBA proposes a continuous industrial alternative. This method uses the friezing machine by compression type MF/2, integrated to a TVP/2S heat-setting line.

A layer of 24, 36 or 48 ends is introduced into the friezing box, after passing through a false twist unit providing the cohesion necessary to the simultaneous treatment of all the yarns and later makes the yarn separation easier. A steam injection at 0.2/0.3 bars, that is to say 100 to 110° C, facilitates the yarn introduction, provides them with volume and develops a much more important frieze effect. The friezing rate is mechanically determined through the adjustment of the exit pressure. This enables to get, in a controlled and perfectly reproducible way, the high variety of friezing effects that are presently especially sought after.

  

picture of carpet sample achieved with SUPERBA frieze yarn.

frieze twist yarn

Combining the friezing per compression with the steam treatment allows the reduction in the twist by about 20 to 30 rounds per metre. This is an appreciable advantage given the high twisting cost. Moreover certain individual yarn breakage, due to too high twists, are thus avoided. The feeding speed is located between 200 and 400 metres per minute for Spun fibres or for BCF multi-filaments. The treatment can be applied to both crude and dyed yarns and to the whole group of counts usually used in the carpet industries.

The friezed effect is then heat-set, under saturated steam, inside the TVP/2S tunnel.


MF/4

The MF/4 Friezing Machine is an entirely new concept compared to the previous MF/2. This machine enables a significant production increase. The laying speed can be adjusted up to 600 m/min and 48 ends can be processed simultaneously.

Advantages of the process

  • More Production & Reproducibility
  • Offers a wider range of friezing effects
  • Easy to use
  • Easy Adjustment & Maintenance

Running principles


The main advantages of the MF/4 are the possibilities to produce different types of frieze effects. Knit de Knit and MF/2 (unequal yarn wavelengths) styles can be achieved with the MF/4 Frieze Machine. With the increased texturing possibilities of the MF/4, in certain cases, twist levels can be reduced. The new MF/4 Frieze Machine increases reliability, reproducibility and allows a wider range of yarns to be processed, such as, singles yarn with low twist and low DPF yarns.

The Frieze Machine is very easy to set up and maintain. An example of this is the use of only one type of feed roller for all yarn types.

The new MF/4 Frieze Machine integrates a PLC system to control the feed rollers and the false twist speed. All machine parameters are entered through a touch screen, for example:

  • Locking and unlocking of the safety covers
  • Adjustment of the desired frieze effect
  • Automatic adjustment of the "0" point of the false twist
  • Steam injection control through electro valve
  • Automatic opening and closing of the feed rollers
  • Input yarn tension monitoring Recipe storage (production settings)
  • Maintenance program for set-up

The PRE/2S pre-feeding speed can be adjusted through the yarn tension captor. The set value will be memorized in the recipe and indicated on the screen .

The MF/4 can be monitored by the ARG/PRO process controller with the 'Plant View' supervisory system.

The possibility to adjust the laying speed up to 600 m/mn, allows obtaining a significant production increase up to 48 ends can be treated simultaneously.

MF/4 Yarn samples:

    

 
All frieze effects are possible from very low to very high. This includes a similar look as that of the knit-de-knit process. Delicate yarn can be processed( single end with low twist and/or low DPF yarn types).
 


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