Non-round spinneret plate hole
AssigneeFiberweb Corovin GmbH
InventorEduard Herda
Life of this patent
Estimating the term…
Abstract
The present invention concerns a spinneret plate (1) for manufacturing a nonwoven fabric, having multiple non-round holes, which are similar to trilobal or multiarmed holes (3) in particular, for polymer flow outlet to produce filaments, in which identical holes are positioned in rows offset relative to one another. At least a first row (2) has a positional arrangement of the holes that differs from the positional arrangement of a second row (7) of rows through rotation of the holes.
Claims6
A spinneret plate for manufacturing a nonwoven fabric, said spinneret plate having multiple non-round holes of a trilobal or multiarmed cross section through which polymer may flow to produce filaments, wherein identically oriented non-round holes are positioned in a first row, and additional non-round holes are positioned in at least one additional row adjacent the first row, wherein the holes of the first row are offset to the holes of the next adjacent row, and wherein the holes of the first row have a positional arrangement which differs from the positional arrangement of the holes of said at least one additional row through rotation of the holes.
Dependencies are inferred from the claim text.