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:
Mar. 25, 1986
Filed:
Jul. 02, 1984
Ludwig Hartmann, 6750 Kaiserslautern, DE;
Other;
Abstract
A process for the production of spunbonded webs by the aerodynamic drawing of filaments or filament rows which are drawn by means of air currents divided into component currents whereby the air current is divided into a conditioning current and a drawing current for the conduction and the drawing of the filaments or filament rows, and into a deposition zone current for the fixation of the web, which is deposited in random texture, in its transportation on the perforated collecting screen, and the deposition zone current being sucked off, together with the spinning space current, in a plurality of zones and being returned to the spinning room as a holding current. An additional spinning room current for balancing out the overall system is introduced into the spinning room. The conditioning current and the drawing current are introduced in solely added air mode and the depositing current and holding current are, respectively, within and without in mostly circulated air mode.