The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 1989
Filed:
Nov. 10, 1987
Hermann Balk, Troisdorf, DE;
Reifenhauser GmbH & Co Maschinenfabrik, Troisdorf, DE;
Abstract
The apparatus for making a spun-filament fleece from a stretched thermoplastic monofilament has a combined spinning unit made up of separate spinning units each having a plurality of spinning nozzles arranged in rows over a rectangular cross section, a blower shaft, a stretching shaft and a wire screen conveyor for the finished deposited fleece. The blower shaft is provided with air orifices for admission of stretching air simultaneously acting as a cooler. The stretching shaft has stretching shaft walls which are, if necessary, movable or adjustable with an accelerating device with a venturi nozzle like vertical cross section. At least two separate spinning units with separate groups of spinning nozzles are located above the blower shaft. At least one separating wall located between individual spinning units divides the blower shaft into separate portions for separate bands of monofilaments generated by the separate groups of spinning nozzles. The separate spinning units can be supplied with different thermoplastic materials from different extruders.