Apparatus for needling a circular nonwoven web
AssigneeTextilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft
InventorsHeinrich Jakob, Hannes Pum
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Abstract
The described apparatus for needling a circular nonwoven web, particularly a nonwoven web having the configuration of a circular ring, comprises a needle board, which carries a multiplicity of needles and is adapted to be driven to reciprocate said needles in a predetermined piercing direction. The apparatus also comprises a turntable (1), which comprises a web support that is adapted to support the nonwoven web. The needle board is provided with needles only in at least one sector-shaped region, which has the configuration of a sector with respect to the axis of rotation of the turntable.
Claims4
In an apparatus for needling a circular nonwoven web, which apparatus comprises
- a needle board, which carries a multiplicity of needles and is adapted to be driven to reciprocate said needles in a predetermined piercing direction and
- a turntable, which is operable to rotate about an axis of rotation and comprises a web support for supporting said nonwoven web in such a position that said needles are adapted to pierce said nonwoven web supported by said web support,
- the improvement residing in that
- said needle board is provided with uniformly distributed needles only in at least one sector-shaped region that has the configuration of a sector defined by two radial lines passing through said axis of rotation.
The improvement set forth in claim wherein
- said needle board has substantially the configuration of a rectangle having two mutually opposite side edges and
- said two sector-shaped regions are defined near one of said side edges by a common plane, which contains a diameter of said turntable and extends near said one side edge along the same.
Dependencies are inferred from the claim text.