RAMELLA & C.
Textile machinesmade in Italy since 1947
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Dehairing is a necessary step for obtaining a high quality yarn from fiber obtained from dual-coated animals, such as cashmere goat, camel, yak, qiviut, vicuña, and buffalo.
The dehairing machine separates the coarse fibers (primary coat) and guard hairs from the desired, fine fibers (secondary coat).
The dehairer works primarily by using centrifugal force, transferring the fine fibers between cylinders operating at different speeds while the heavier coarse fibers are preferentially ejected.
Ramella has created a compact dehairer suitable for small production mills.
Fiber is fed from a conveyor into a 3-cylinder input unit that opens the fibers as they are passed onto the first separation cylinder.
In the central part, the two high-speed cylinders separate the coarse hairs from the finer fibers.
At the machine exit, a doffer roller and fly comb allow the collection of the desired fine fibers into a container.
In the lower part of the dehairer, there is a second conveyor that collects all of the impurities and the guard hairs and deposits them in a waste collector at the front of the machine.
The Ramella dehairer has a pair of high-speed rotating cylinders that expel the heavier fibers by means of centrifugal force coupled with differential binding coefficients of the heavy and fine fibers with respect to the rigid card clothing covering the cylinders.
All of the fibers are automatically deposited into easily removable containers without the need for manual collection.
The desired fine fibers are collected at the rear of the machine, directed to the collection container by adjustable air hoses and a stainless steel chute, while the heavy fibers and guard hairs are diverted to a separate collection area under the feed conveyor.
The Ramella dehairer was designed specifically for small production mills that often process many different types of fiber.
During our tests, we have successfully dehaired cashmere, alpaca, buffalo, llama, yak, and qiviut.
The number of passes required to produce an optimal product are dependent on the type of fiber being dehaired.
Besides fiber separation, the dehairer also opens the fiber and removes dust and vegetable matter.
The dehairer is driven by 4 independent motors that are electronically controlled by inverters.
With the simple twist of a dial, the user can easily change the relative speeds of the cylinders depending on the type of fiber being dehaired.
The electronic controllers are contained in a panel with filtered ventilation to protect the sensitive electronic parts.
The control dials are easily accessed on the outside of the panel and every parameter can be easily adjusted on a large touchscreen.
Button panels located on both sides of the dehairer allow simple starting and stopping of the machine at both the entry and the exit.
For maximum safety, our dehairer is fully enclosed by an external frame made of anodized aluminum, which is lightweight, yet sturdy, and resists corrosion.
The protective doors are hinged so they can be quickly and easily opened for cleaning and maintenance.
Two automatic safety devices prohibit the doors from being opened while the machine is running.
The safety structure protects the worker while allowing a wide view and the complete control of the dehairer during the process.
Ramella has created a compact dehairer suitable for small production mills.
Fiber is fed from a conveyor into a 3-cylinder input unit that opens the fibers as they are passed onto the first separation cylinder.
In the central part, the two high-speed cylinders separate the coarse hairs from the finer fibers.
At the machine exit, a doffer roller and fly comb allow the collection of the desired fine fibers into a container.
In the lower part of the dehairer, there is a second conveyor that collects all of the impurities and the guard hairs and deposits them in a waste collector at the front of the machine.
The Ramella dehairer has a pair of high-speed rotating cylinders that expel the heavier fibers by means of centrifugal force coupled with differential binding coefficients of the heavy and fine fibers with respect to the rigid card clothing covering the cylinders.
All of the fibers are automatically deposited into easily removable containers without the need for manual collection.
The desired fine fibers are collected at the rear of the machine, directed to the collection container by adjustable air hoses and a stainless steel chute, while the heavy fibers and guard hairs are diverted to a separate collection area under the feed conveyor.
The Ramella dehairer was designed specifically for small production mills that often process many different types of fiber.
During our tests, we have successfully dehaired cashmere, alpaca, buffalo, llama, yak, and qiviut.
The number of passes required to produce an optimal product are dependent on the type of fiber being dehaired.
Besides fiber separation, the dehairer also opens the fiber and removes dust and vegetable matter.
The dehairer is driven by 4 independent motors that are electronically controlled by inverters.
With the simple twist of a dial, the user can easily change the relative speeds of the cylinders depending on the type of fiber being dehaired.
The electronic controllers are contained in a panel with filtered ventilation to protect the sensitive electronic parts.
The control dials are easily accessed on the outside of the panel and every parameter can be easily adjusted on a large touchscreen.
Button panels located on both sides of the dehairer allow simple starting and stopping of the machine at both the entry and the exit.
For maximum safety, our dehairer is fully enclosed by an external frame made of anodized aluminum, which is lightweight, yet sturdy, and resists corrosion.
The protective doors are hinged so they can be quickly and easily opened for cleaning and maintenance.
Two automatic safety devices prohibit the doors from being opened while the machine is running.
The safety structure protects the worker while allowing a wide view and the complete control of the dehairer during the process.
As previously noted the dehairing process shares some aspects to the carding process.
Building on our extensive experience in carding machines, the Ramella dehairer has been designed with similar quality characteristics:
• An extremely solid and stable structure, made to last.
• The components are machined for maximum precision and quality.
• The cylinders are driven independently by 4 motors with electronic speed control.
• The rigid card clothing is durable and allows quick cleaning after each run.
• All cylinders are mounted on sealed ball bearings without bushings.
• A modern design specifically created to meet the needs of small production mills and laboratories.
As with the carder, the solid steel structure and the precision of the mechanical parts are critical factors in determining the quality of the dehairer machine.
The Ramella dehairer is characterized by a 4 cm (1.6'') thick, fully machined steel frame connected by solid steel crossbeams. This structure is approximately 10 times stronger than one formed from welded tubes.
Furthermore, all of the rotating parts are precisely machined and are equipped with micro adjustment, which permits exact roller positioning at micron distances, but more importantly, once the positioning is set, it does not move, resulting in both a consistent, high quality product and longer machine life.
Built to last, all surfaces are painted or chemically treated to resist corrosion.
Every single detail of the Ramella dehairer has been designed using modern 3D CAD.
All of the components have been designed to obtain a high-performance machine with an excellent quality/price ratio.
Even the electric panel has been designed in order to make the use of the dehairer simple and intuitive.
We use CNC lathes, milling machines and modern laser cutters in the production of the dehairer components that we make in-house.
The steel used is of premium quality and all of the commercial components come from suppliers with well-known brands.
Electric specifications:
Installed power: 4.2 kW
Power consumption: 3.3 kW
Single phase 230V 50/60Hz (customizable)
Size (length x width x height):
Dehairer: 3400 mm x 1780 mm x 2200 mm (134'' x 70'' x 87'')
Storage room (optional): 1400 mm x 1270 mm x 2300 mm (55'' x 50'' x 90'')
Air blower (optional): 580 mm x 610 mm x 600 mm (23'' x 24'' x 24'')
Download CAD layout drawing (PDF version)
As with the carder, the solid steel structure and the precision of the mechanical parts are critical factors in determining the quality of the dehairer machine.
The Ramella dehairer is characterized by a 4 cm (1.6'') thick, fully machined steel frame connected by solid steel crossbeams. This structure is approximately 10 times stronger than one formed from welded tubes.
Furthermore, all of the rotating parts are precisely machined and are equipped with micro adjustment, which permits exact roller positioning at micron distances, but more importantly, once the positioning is set, it does not move, resulting in both a consistent, high quality product and longer machine life.
Built to last, all surfaces are painted or chemically treated to resist corrosion.
Every single detail of the Ramella dehairer has been designed using modern 3D CAD.
All of the components have been designed to obtain a high-performance machine with an excellent quality/price ratio.
Even the electric panel has been designed in order to make the use of the dehairer simple and intuitive.
We use CNC lathes, milling machines and modern laser cutters in the production of the dehairer components that we make in-house.
The steel used is of premium quality and all of the commercial components come from suppliers with well-known brands.
Electric specifications:
Installed power: 4.2 kW
Power consumption: 3.3 kW
Single phase 230V 50/60Hz (customizable)
Size (length x width x height):
Dehairer: 3400 mm x 1780 mm x 2200 mm (134'' x 70'' x 87'')
Storage room (optional): 1400 mm x 1270 mm x 2300 mm (55'' x 50'' x 90'')
Air blower (optional): 580 mm x 610 mm x 600 mm (23'' x 24'' x 24'')
Download CAD layout drawing (PDF version)
