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. 13, 1984
Filed:
Feb. 23, 1982
Applicant:
Inventor:
Ingmar Andersson, Hammaro, SE;
Assignee:
AB Karlstads Mekaniska Werkstad, Karlstad, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ;
U.S. Cl.
CPC ...
162123 ; 162129 ; 162212 ; 162213 ;
Abstract
Multilayer paper of superior layer purity and formation is produced by discharging a plurality of superimposed jets of papermaking stock from a headbox into the throat of a roll former, preventing the discharged jets from coming together for a short distance by introducing air between adjacent jets as they leave the headbox, and maintaining the velocity of the jet closest to a plain forming roll in the roll former slightly higher than the velocity of an adjacent discharged jet.