Fiber is opened and blended through a series of machines in blow-room. Utilizing the Trutzschler blowing machines, we achieve a consistent blend. Automatic blending systems equipped on the blow room mix different type of fibers in desired proportions. Fine opened fiber material is then fed into carding machines through transportation ducts.
Carding process is called the heart of yarn spinning where fibers are opened and cleaned up to individual fiber level which decides the quality of final product.
Longer and uniform fiber length gives better yarn quality combing process removes the short fibers thus ensuring that the yarn produced from combed cotton will be better in quality. The cotton portion, in the cotton blended ring spun yarns in Bitratex, is processed through Reiter comber machines.
In the drawing process fiber blending and parallelization are carried out which helps in achieving uniform yarn with a minimal count CV% (lower the yarn count variation, higher the uniformity of yarn). Bitratex utilizes latest auto-leveler draw frames from Reiter which confirms that finisher sliver being produced is of uniform mass.
The finisher draw frame sliver is drafted and twisted to produce roving strand. Toyota simplex machines need at Bitratex produce uniform roving package for feeding the ring frames. High precision sensors constantly ensure the uniform roving quality throughout the roving bobbin. These roving bobbins are then transported to ring frame through automatic bobbin transport system.
Desired yarn count with necessary twist is processed by drafting of roving and ring twisting in ring frame. High precision drafting of ring spinning machines from Zinser employed at Bitratex deliver consistent high quality yarn from each spindle.
Winding is required for making the final bigger cone packages from smaller ring bobbins. Final yarn package i.e. yarn cone is produced on latest generation automated Muratec and Schlaforst winding machines. Each centimeter of yarn is monitored online for the quality through the electronic clearers on winding machine. During this process yarn faults and breaks are replaced by yarn air splice thereby producing consistent high quality yarn package of desired length.
Open-End or Rotor spinning directly produces yarn from the auto leveled finisher draw - frame sliver. The spinning system uses opening roller in combination with rotors for fiber drafting and twisting hence they are also called Rotor spinning. Bitratex uses fully automated modern Open-End machines from Oerlikon Schlafhorst from Germany for making high quality open-end yarns.
Vortex spinning technology, one of the most modern and high speed-spinning technologies as of today, uses compressed air vortex for precision yarn spinning thus called “Vortex-Spinning”. Bitratex utilizes the machineries from Murata, Japan.
The Energy Building 20th Floor
Jl. Jendral Sudirman Kav 52-53 Lot 11A – SCBD, Jakarta 12190 – Indonesia
Phone : (62 – 21) 2995 1619/20
Fax : (62 – 21) 2995 1621
Jalan Brigjend. S. Sudiarto Km. 11
Semarang 50193, Indonesia
Phone +62 (24) 6713585
Fax +62 (24) 6713589