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. 26, 2006
Filed:
Jan. 10, 2002
Roland Donaj, Biebertal, DE;
Wolfgang Dilly-louis, Friedberg, DE;
Rudolf Kämpf, Gründau, DE;
Norman Schnittker, Neuberg, DE;
Reinhard Wolf, Rodenbach, DE;
Roland Donaj, Biebertal, DE;
Wolfgang Dilly-Louis, Friedberg, DE;
Rudolf Kämpf, Gründau, DE;
Norman Schnittker, Neuberg, DE;
Reinhard Wolf, Rodenbach, DE;
Zimmer AG, Frankfurt Main, DE;
Abstract
Comminuted carpet pieces are fed to a first stirred tank together with an aqueous solution containing separating salt, to form a first suspension, which is fed to a first mechanical separating stage. A first high-solids phase, a second high-solids phase containing polymer fiber material, and a liquid phase are obtained therefrom. The second high-solids phase is mixed with a water-containing separation solution in a stirred tank, to give a second suspension, which is fed to a second mechanical separating stage. A third high-solids phase, a polymer fiber material-rich phase and a liquid phase are withdrawn therefrom. An acid which is stronger than HCOis introduced into the stirred tank together with the water-containing separation solution, and the pH of the liquid in the stirred tank is adjusted to 2–6.