Air-Jet Loom Technology and Operation
category
Air-jet looms insert weft yarn by propelling it through the shed using a high-velocity air stream from a main nozzle supplemented by relay nozzles spaced at intervals across the shed width, achieving weft insertion velocities of 80 to 120 metres per second and loom speeds of 600 to 1500 picks per minute that make air-jet the fastest weaving technology, with the limitation of being restricted to smooth, uniform, relatively light yarns that can be reliably carried by air flow across the profiled reed channel that guides the yarn during insertion.
Role
Provides the highest productivity weaving technology for the specific category of smooth, uniform yarns in plain and simple twill weave constructions for shirting, lining, sheeting, and similar high-volume fabrics, with air-jet dominating the commodity fine cotton, polyester, and polyester-cotton fabric market from the combination of the highest picks per minute of any weaving technology and the relatively simple fabric constructions in these markets that do not require the yarn type flexibility that rapier provides.
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Subtopics
- Main Nozzle Design and Air Flow Principles Air-jet main nozzles use a convergent-divergent nozzle geometry that accelerates the yarn-carrying a…
- Relay Nozzle Systems and Air Timing Sequence Relay nozzles spaced at 60 to 100 millimetre intervals across the reed width each fire a supplementa…
- Profiled Reed Design for Air-Jet Guiding Air-jet looms use specially profiled reeds with a U-shaped or C-shaped channel running along the low…
- Air Consumption and Energy Efficiency in Air-Jet Weaving Air-jet loom air consumption is typically 40 to 70 normal litres per pick for medium-weight cotton f…
- Yarn Suitability and Count Range for Air-Jet Insertion Air-jet insertion is most reliable for smooth, uniform, cohesive yarns including ring-spun and compa…
- Air-Jet Loom Speed Optimisation and Pick Rate Air-jet looms achieve the highest commercial weaving speeds of any technology at 600 to 1500 picks p…
- Multi-Colour Weft Insertion in Air-Jet Weaving Air-jet multi-colour weft insertion uses tandem nozzle systems with 2 to 4 main nozzles each connect…
- Weft Insertion Monitoring and Short Pick Detection Air-jet weft insertion monitoring uses optical or capacitive sensors at the receiving selvedge to de…
- Air-Jet Selvedge Formation and Weft Scissors Air-jet loom selvedge formation uses leno selvedge yarns on dedicated heddles at both selvedges twis…
- Air-Jet Loom Applications in Commodity Fabric Markets Air-jet weaving dominates the production of commodity shirting, lining, sheeting, poplin, and simple…