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US 7,134,859 B1Granted
Nits separator
AssigneeM&J Fibretech A/S
InventorBirger Elmgaard Sørensen
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AssigneeM&J Fibretech A/S
InventorBirger Elmgaard Sørensen
Estimating the term…
A plant which serves to produce a nonwoven web of fibers out of a fibrous material, such a cellulose pulp. The plant comprises a hammer mill for defibrating the fibrous material and a forming head for forming a web of fibers on an endless forming wire, which, during operation, runs mainly horizontally, a first transport fan for transporting defibrated fiber to the forming head via a first air duct and a second transport fan to extract nits from the forming head via a second air duct. Furthermore, the plant comprises a separator, which is connected to the second air duct and arranged for separating the nits and the well-opened fiber, a third transport fan for returning the separated, well-opened fibers to the forming head, and a nits-opener for converting the separated nits into well-opened fiber. The separated nits are transported from the nits separator to the nits-opener by means of a fourth transport fan via a fourth air duct. The defibrated fibers are returned to the forming head by means of a fifth transport fan via a fifth air duct. The plant is easy to control and is capable of producing optimally high quality fiber products. In addition, the plant allows the defibrator to defibrate new fiber material at full capacity so that the remainder of the plant is able to produce at an optimum output level. The plant is furthermore very energy-saving.
A plant for producing a nonwoven web of fibers of fibrous material which comprises a device for defibrating fiber material, at least one head for forming a fiber web on a endless forming wire which, during operation, runs mainly horizontally, a first transport fan for transporting defibrated fibers to the forming head via a first air duct, a second transport fan to extract nits from the forming head via a second air duct, a separator, connected to the second air duct, for separating nits and well-opened fibers;
A plant for producing a nonwoven web of fibers of fibrous material which comprises a device for defibrating fiber material, at least one head for forming a fiber web on a endless forming wire which, during operation, runs mainly horizontally, a first transport fan for transporting defibrated fibers to the forming head via a first air duct, a second transport fan to extract nits from the forming head via a second air duct, wherein the second air duct is a separate and distinct component from the first air duct, and a separator, connected to the second air duct, for separating nits and well-opened fibers, wherein the nits separator is a cyclone.
A plant for producing a nonwoven web of fibers of fibrous material which comprises a hammer mill for defibrating fiber material, at least one head for forming a fiber web on a endless forming wire which, during operation, runs mainly horizontally, a first transport fan for transporting defibrated fibers to the forming head via a first air duct, a second transport fan to extract nits from the forming head via a second air duct, and a cyclone, connected to the second air duct, for separating nits and well-opened fibers.
Dependencies are inferred from the claim text.