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:
Sep. 16, 2014
Filed:
Jun. 23, 2010
Karnik Tarverdi, Harrow, GB;
Trevor W R Dean, High Wycombe, GB;
Robert Bramsteidl, St Agatha, AT;
Luca Achilli, London, GB;
Karnik Tarverdi, Harrow, GB;
Trevor W R Dean, High Wycombe, GB;
Robert Bramsteidl, St Agatha, AT;
Luca Achilli, London, GB;
BASF SE, Ludwigshefen, DE;
Abstract
The current invention is directed to a method and apparatus for defibrillating cellulose fibers achieved through single or multiple passes of raw or pre-processed cellulose fiber slurry with a preferred solid material consistency range of 35% to 55% through twin-screw fiber processing machines. During this processing operation fiber slurries are optionally further enhanced with additional fiber and mineral additives to optimize performance of the material for specific end purposes. The hyper defibrillated fiber slurry produced can be defined as one reaching a Schopper-Riegler (SR) level between 75 SR and 85 SR and/or producing a pressed, dried board with a density of preferably at least 850 kg/m.