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:
Jul. 11, 2000
Filed:
Jan. 03, 1998
Applicant:
Inventors:
Richard Douglas Carter, Macon, GA (US);
Britt Ciccrehi, Macon, GA (US);
Assignee:
J.M. Huber Corporation, Edison, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ;
U.S. Cl.
CPC ...
162322 ; 162264 ; 162315 ; 162252 ;
Abstract
An apparatus for improving retention of filler in papermaking systems includes a split stream feed to either the head box or fan pump of a papermaking system. The split stream divides the pulp flow into two streams, one stream having a retention aid and filler added thereto. The retention aid and filler-containing stream is then added back to the other stream upstream of the fan pump or head box. Treating only a portion of the overall pulp flow with the filler/retention aid lowers retention aid consumption, improves paper product appearance and maintains or increases filler retention during papermaking.