Long And Short Filament Fibre Flashcards
What is wet extrusion?
A: Wet extrusion is a manufacturing process where materials like wood cellulose or polymers are dissolved or suspended in a liquid, forced through a spinneret to form fibres, and then solidified in a chemical bath.
Q: What is reeling?
A: Reeling is the process of unwinding silk filaments from cocoons, essential for silk production. This process carefully extracts the continuous silk thread without breaking it.
What are filament fibres?
A: Filament fibres are long, continuous strands of fibre that can be natural (like silk) or synthetic (like polyester). They are not broken into shorter lengths.
What are multifilament yarns?
A: Multifilament yarns are yarns made by twisting together multiple continuous filaments. These yarns are smooth, strong, and often used in textiles and industrial fabrics.
What are short staple fibres?
A: Short staple fibres are fibres that are relatively short in length, typically a few millimeters to a few centimeters long. Examples include cotton and wool fibres.
: What are spun yarns?.
A: Spun yarns are yarns made by twisting or spinning short staple fibres together. This process helps interlock the fibres to form a cohesive yarn used for weaving or knitting fabrics
How are man-made filament fibres converted into staple lengths?
A: The conversion process includes several steps:
- Preparation: Continuous filament fibres are produced through methods like wet extrusion, melt spinning, or dry spinning.
- Drawing: Filaments are drawn to align molecules, enhancing strength and uniformity.
- Cutting: Filaments are cut into uniform staple lengths using rotary knives or cutting machinery.
- Crimping: Cut fibres are crimped to add texture, improving cohesion when spun into yarn.
- Finishing: Fibres undergo finishing processes to remove impurities and add desired properties.
- Baling: Staple fibres are bundled into bales for transport to spinning mills.
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