Bobtex Spinning
Yashashree Ingle
Department of Textile
Technology
Veermata Jijabai Technological Institute, Mumbai, India
General Specification:
- Process Group- Adhesive process
- Spinning Process- Polymer
- Yarn Type- Multi component yarn
- Twist in yarn- Twist free
- Yarn strength imparted by- Permanent bonding
Structure and characteristics of yarn spun by
Bobtex Spinning:
Bobtex
spinning has two spinning positions and produces multi component yarn which
consist of:
- It contains a core of multi-filament or monofilament making upto 10-60% and forming the yarn carrier(a)
- A polymer intermediate layer 20-50% as shown in fig (b) and
- In (c) staple fiber embedded in the intermediate layer which acts as protecting layer.
Yarn Characteristics:
- The bobtex spun yarn provides high covering factor as the yarn is flat.
- The evenness of the yarn is similar to that of the ring spun yarn.
- The yarn is stiffer with low elongation due to the use of binder.
Bobtex Spinning:
- In the production of the bobtex spun yarn, the filament runs through the extruder, after which a coating of molten polymer remains stuck to it.
- Before this polymer solidifies, the open staple fibers are pressed into the molten material which forms a covering layer and this is carried out in the opening unit.
- From the cans on both sides, the two drawframe or card sliver are fed in the opening assembly.
- The false twist device ensures good binding-in of the staple fibers. The yarn obtained is wound onto large package on the base of machine.
Specifications:
- Spinning position per machine- 2
- Delivery speed- 600 m/meter approx.
- Raw material- filament/ polymer/ fibers
- Count range- 30-300 tex
- Type of yarn- Three component yarn
- Yarn characteristics- High covering factor, stiff, even, woolen spun characteristics
- Field of use- Sacks ,Carpet backing, industrial woven fabric
- Advantage- High production, Package upto 50 kg
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