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:
Dec. 15, 1981
Filed:
Aug. 15, 1980
Eugene W Wittkopf, Suamico, WI (US);
Magna-Graphics Corporation, Oconto Falls, WI (US);
Abstract
Defectively made absorbent articles (e.g., disposable diapers) are shredded for reclamation, and their fluff fillers, mixed with undesired scraps, are fed downwardly towards a forwardly moving horizontal stretch of a conveyor screen. Fluff fibres are forced into a collecting chamber under said screen stretch by maintaining a subatmospheric pressure therein to generate a downward air flow through the screen. Above the stretch are a succession of separating chambers. Under the screen stretch, near the front of each such chamber, is an air outlet from which air is blown upward to lift material off of the screen. Near the front of each chamber, above the screen, is a paddle wheel rotor that propels lifted material rearwardly in the chamber, thus maintaining agitated circulation of material in each separating chamber. When one separating chamber is overloaded, excess material is carried on the screen into the next forward one.