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:
Oct. 31, 2006
Filed:
May. 23, 2002
Applicants:
Tapio Metsälä, Tampere, FI;
John Shakespeare, Siuro, FI;
Inventors:
Tapio Metsälä, Tampere, FI;
John Shakespeare, Siuro, FI;
Assignee:
Metso Automation Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and an apparatus for identifying mapping of a paper machine by means of a mapping test. The invention comprises forming a mapping model which takes the linear and non-linear shrinkage of a paper web into account. The mapping test result is analyzed to form a non-linear shrinkage profile and a linear mapping error from it. The linear error and the non-linear shrinkage profile thus obtained are used in the mapping model.