Near Infrared Multi Spectral Occlusion Limits in Dense Raw Cotton Tuft Streams
Dense cotton tufts block near infrared light past three millimeters, hiding synthetic contaminants beneath opaque cellulose surface layers during optical sorting.
Tuft Stream Transport
Material Flow
Pneumatic conveying system moves opened fibre clumps from the cleaning room to the individual spinning frames through a network of ducts. Within a modern spinning mill, tuft stream transport relies on high velocity air to keep the cotton or synthetic material in a suspended state. This prevents the fibres from settling or becoming tangled during their journey through the plant.
It acts as the primary artery for raw material delivery, connecting the heavy opening machinery to the fine carding and spinning units.
Airflow Management
Managing the air pressure within the tuft stream transport network is necessary to prevent fibre damage or duct blockages. If the velocity is too low, heavy tufts fall out of the stream and clog the bends in the piping. Conversely, excessive air speed can cause the fibres to strike the duct walls with enough force to create neps or break the delicate filaments.
Automated dampers and variable speed fans maintain the optimal flow regardless of the distance the material must travel.
Demand Integration
The volume of material in the tuft stream transport system is regulated by the demand from the downstream carding machines. Sensors in the feed chutes signal the central controller to increase or decrease the tuft flow. This synchronization ensures that each machine receives a consistent supply without overflowing the hoppers.
A well balanced system reduces the amount of compressed air used, which lowers the overall energy consumption of the mill.
Quality Boundary
Clean interior surfaces prevent contamination between batches. Rough spots can catch stray fibres. Regular inspection prevents carryover issues.
Polished pipes ensure the material glides through.