Product Outline



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ROLLING FEEDER represents a breakthrough innovation solution from BTSR R&D devised to impact seamless and knitting sectors habits and trends tied to bare elastomer applications.

ROLLING FEEDER is a unique solution on the market, thanks to its capability to combine in a single device the flexibility and user-friendliness of BTSR Constant Tension Feeding Technology with the product top quality resulting from bare elastomeric yarn feeding at constant LFA/speed.

Thanks to the BTSR self-adaptive electronic technology, ROLLING FEEDER is infact able to operate at constant tension yarn feeding during yarn 'start/stop' working phases (or during strong yarn pattern selections) and to automatically switch to constant LFA / speed feeding during the garment production.

Based on derulè yarn reeling-off working concept, ROLLING FEEDER technology allows to eliminate yarn 'twisting effect' (flat yarns) and to guarantee the capability to feed elastomeric yarns at constant speed/LFA.

ROLLING FEEDER System features the BTSR Patent Pending 'Master-Slave Dual Working Mode' solution (derulé at constant tension / derulé at constant LFA), with possibility of selecting a single (or multiple) device as MASTER and a number of devices as SLAVE associated with the MASTER and reproducing exactly the same MASTER behaviour, thus guaranteeing the absolute stitch matching, preventing yarn plating faults in vanisè process and ensuring Top quality garment production. Combined with ULTRAFEEDER devices (configured as MASTER) installed on the machine for background yarn feeding control, the ROLLING FEEDERs (configured as SLAVE) can operate at constant 'stretch ratio', thus guaranteeing a fully automatic constant yarn feeding / stretching and Top Quality repeatability.

ROLLING FEEDER is designed to minimize and simplify the operator tasks, thus guaranteeing the achievement of most demanding production efficiency goals and getting TOP Quality Production.

Main Features and Benefits

Bare elastomers feeding capability in seamless and knitting applications
Derulè yarn reeling-off
Automatic Double Electronically Controlled Yarn Feeding Capability: yarn constant tension - yarn constant LFA / speed
Programmable tension: 0.5 gr. ÷ 50 gr.
Yarn Feeding speed: up to 1000 mt/min (@ 24 V / 36 V)
INC/DEC function: possibility to INCreasing or DECreasing gradually the yarn tension / yarn LFA with a resolution of 0.1 gr. (0.1 m/min)
LFA function: exact yarn consumption measuring (Length of Yarn Absorption) with resolution of 0.1 mm
BTSR Master-Slave System
Yarn 'twisting effect' elimination (flat yarns)
Yarn plating faults prevention in vanisé process
Absolute stitch matching and top-quality production repeatability
Automatic constant yarn 'stretch ratio' (only in combination with ULTRAFEEDER devices installed for background yarns feeding control)
Extreme user-friendly operations
Very High machine efficiency
Retrofittable on any machine





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