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35010 Grantorto (PD) - IT

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+39 049 5960651

Winding

Hi-speed automatic winders are used in very fast process lines like Spunbond PET – PP, Meltblown, Spunlace, ADL.
Hi-flexibility automatic revolving winders are even suitable for winding rigid materials that can not be accumulated.

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TR Winder

The TR Winder is designed for the winding of nonwovens that cannot be accumulated. Ramina revolving system allows in-line continuous operations with flying roll change and a constant web tension thanks to load cell system.
Functioning
At the approach of processing-roll completion, a new shaft is placed at the initial position. When the processing roll reaches its maximum diameter, the revolver rotates moving it to the initial position where it finishes winding, while bringing the new shaft to the working position. The new roll edge, which was sprayed with glue during cut, pastes on the new core and starts winding. After winding completion, the spindles stop rotation and two pneumatic arms engage the ends of the shaft and deposit it on the floor.

Trim Management

Ramina offers several solutions to safely handle the trim, from the trim suction and Condensing Unit to the trim winding and opening.

AX Unwinder

The Axial Unwinder has been designed to easy unwind nonwoven roll on cardboard with expansion shaft. The AX Unwinder is equipped with a sewing machine for the roll end-jointing and can be supplied optionally with crane and hoist for roll lifting and with roll centering system.

TG Unwinder

Handy and versatile tangential unwinding unit designed to unwind nonwoven roll onto two driven unwinding rolls. The TG Unwinder is equipped with sewing machine for the roll end-jointing and a dancer rubber roller for the tension control. Optionally the machine can be supplied with crane and hoist for roll lifting and with roll centering system.

TR Unwinder

The TR Unwinder is designed for the unwinding of nonwoven rolls allowing continuous operations with flying roll change and a constant web tension thanks to load cell system.
Functioning
The operator, at the approach of processing-roll depletion, places a new roll to be unwound on the initial position. When the processing roll reaches the minimum diameter, the revolver rotates moving it to the initial position and bringing the new roll to the working position. The pressing cylinder is raised, making fabric from the new roll adhere to fabric from the depleting one, which tows it making it enter the process. The pneumatic blade cuts the sheet of the depleted roll, which can thus be removed, and the pressing cylinder is lowered.

FW Winder

The compact FW Winder is designed for the winding of the felt and the wadding making a roll. Usually fed by a j-box for the product accumulation or by a conveyor belt, the FW Winder is equipped with a slitter and cross cutter placed at the rear side of the machine. According to the customer’s need the FW Winder can be equipped with manual or automatic roll expulsion.

SW Winder

The hi-speed automatic SW Winder is designed for the roll winding in the very fast process of Spunbond, Meltblown and Composite lines and also in Spunlace and ADL lines. The special construction allows the in-line slitting of a minimum 70 mm slit without need of a slitter rewinder and the automatic roll change is performed without any slowdowns.

Soft Winder

The compact and smart Soft Winder represents one of the latest innovation and state-of-the-art technology of Ramina winding equipment that has lately been patented. Designed for the full automatic winding of wadding and high-loft nonwoven rolls, the product is conveyed through a conveyor belt onto two winding rollers that perform the surface roll winding. The constant web tension is ensured thanks to a dancing roller controlled by pneumatic system and the roll change operation is operated by a core store that feeds in automatic the winder and a special product threading system. The machine is also equipped with the automatic roll expulsion system that unloads the roll onto a weighing carriage.

RF Winder

Ramina RF Winder is designed for winding of impregnated or laminated nonwovens. After the slitting and the cross cut placed at the rear side of the machine, the product is conveyed onto two winding rollers that perform the roll winding while a presser roller favors the compacting of the final roll. The very flexible RF Winder operates the automatic change roll operation by the help of a hot-melt gluer. The machine is also equipped with an automatic roll expulsion system that unloads the roll onto the floor by means of a cradle.
Trimming
Ramina offers several solutions to safely handle the trim, from the trim suction and Condensing Unit to the trim winding.

GTB Winder

Ramina GTB Winder is designed for winding the nonwoven in a very compact roll. Especially addressed for continuous production changes, the very flexible GTB Winder can operate the manual or automatic change roll operation. After the slitting and the cross cut placed at the rear side of the machine, the product is conveyed onto two winding rollers that perform the roll winding while a presser roller favors the compacting of the final roll reducing the transport volume. The machine is also equipped with an automatic roll expulsion system that unloads the roll onto a deviator carriage having the function of complete the final winding of the roll, deviate the roll to the packaging station or doff it on the floor.
Trimming
Ramina offers several solutions to safely handle the trim. From the trim suction and Condensing Unit, to the trim winding and grinding equipment and recycling. A Trim Dampening Unit is recommended before the grinding process especially for calendered fabric.

GT Winder

With a maximum working width of 8.000 mm, Ramina GT Winder is designed for winding the nonwoven felt in a very compact roll. The machine can be semi-automatic or fully-automatic tailored to each customer’s need. After the slitting placed at the rear side of the winder the nonwoven is conveyed toward the winding rollers from the bottom. The winding rollers perform the roll winding while a presser roller favors the compacting of the final roll reducing the transport volume. In case of many slitters the GT Winder is equipped with a special banana roller for the wrinkle-free fabric passage. Once the cross cut installed at machine outlet completes the cut the roll is unloaded onto a weighing carriage or onto a deviator carriage for the packaging operation.

Pneumatic Accumulator

The Pneumatic Accumulator is needed to perform the roll replacement operation without interrupting the production process.
Pressure and tension adjustment
The Pneumatic Accumulator is a very easy-use, reliable and cost-efficient machine designed to accumulate the nonwoven during the change roll operation by simply set at the line starting 4 working pressures (start-working-end-return) according to product width and basic weight. The 4 pressures exercise the regulation of product tensioning and their variation are automatically managed by encoder and proportional valve. During normal winding operation the accumulator’s pneumatic circuit is brought to working pressure, keeping the rollers slightly raised in working position.
Driven pneumatic accumulator
To operate with lightweight products lower than 100 gsm the Pneumatic Accumulator can be optionally equipped with accumulation rollers driven by belt-transmission to ease product passage and avoid the formation of wrinkles. This simple but smart system represents one of the latest innovation and state-of-the-art technology of Ramina production range that has lately been patented.

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