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:
May. 24, 1988
Filed:
Jan. 07, 1987
Applicant:
Inventors:
Siegfried Lampe, Ellerbek, DE;
Bernd Ramcke, Hamburg, DE;
Assignee:
E.C.H. Will (GmbH & Co.), Nedderfeld, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156524 ; 51 / ; 156153 ; 156258 ; 156267 ; 156908 ;
Abstract
One edge face of each stack of overlapping paper sheets in a series of moving stacks is trimmed and simultaneously roughened by a driven circular knife before the thus trimmed and roughened edge faces are coated with adhesive paste in a step which immediately follows the combined trimming and roughening operation. The edge faces are roughened by teeth which form the cutting edge of the circular knife and/or by particles of hard metal and/or boron nitride on that major surface of the knife which confronts the edge face of the stack at the combined trimming and roughening station.