Bobtex Spinning

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.

Fig- Bobtex Yarn Structure

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:

Fig- Bobtex Spinning Process

• 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