Method and apparatus for manufacturing non woven fabrics
Abstract
Abstract NON-WOVEN FABRICS ARE PREPARED ON A PAPER MACHINE FROM AQUEOUS DISPERSIONS OF RELATIVELY LONG SYNTHETIC FIBERS WHICH ARE SEPARATED FROM EACH OTHER IN AN AXIALLY SLOTTED, CYLINDRICAL DRUM BY MEANS OF A ROTARY AGITATOR CARRYING AIRFOIL SECTIONS ON ARMS RADIALLY EXTENDING FROM A DRIVE SHAFT. THE AIRFOIL SECTIONS SWEEPING THE APERTURED, STATIONARY WALL OF THE DRUM PRODUCE CYCLIC PRESSURE CHANGES IN THE LIQUID WITHIN THE DRUM WHICH LOOSEN ANY FIBER BUNDLES PRESENT. AS THE LOOSENED BUNDLES ARE DISCHARGED FROM THE DRUM THROUGH THE SLOTS WHICH FLARE OUTWARDLY AT A SMALL ANGLE, THE FIBER BUNDLES ARE FULLY BROKEN UP, AND A DISPERSION SUBSTANTIALLY FREE FROM BUNDLES REACHES THE PAPER MACHINE. THE DWELL TIME IN THE DRUM CAN BE HELD TO A MINIMUM TO AVOID THE INFORMATION OF NEW BUNDLES BY THE AGITATOR.
Inventors
- 👤 H Seeliger
- 👤 D Berger
- 👤 E Hahnlein
Bibliographic Details
Claims Analysis
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