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:
Feb. 24, 1987
Filed:
Oct. 29, 1985
Applicant:
Inventor:
Jorgen Niske, Lund, SE;
Assignee:
Tetra Pak International AB, Lund, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B31B / ;
U.S. Cl.
CPC ...
493362 ; 493370 ; 493467 ; 51 7 / ; 51326 ;
Abstract
A method for thinning a web along selected regions of a blank or a web of a material having at least one layer of paper or cardboard by passing the material over one or more die rolls, each being provided with raised portions which bring the material into contact with a rapidly rotating grinding wheel which grinds which selected surfaces of the material away.