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:
Nov. 16, 2004
Filed:
Apr. 19, 2002
Gunnar Edwardson, Bohus Björkö, SE;
Claes Göransson, Landvetter, SE;
SCA Hygiene Products AB, Gothenburg, SE;
Abstract
Method of forming a fiber web ( ) intended for use in absorbent products, such as sanitary towels, by air-laying fibers. Separate air flows containing fibers are fed to a number n of different mat-forming wheels ( ), where n is a whole number which is at least 2. Separate web layers ( ) are formed on each mat-forming wheel. The fiber web ( ) is formed by virtue of said web layers being combined downstream of the mat-forming wheels to form a common fiber web which is imparted very great manufacturing accuracy by virtue of the manufacturing method. The manufacturing speed and thus the web speed can be very high, and the desired manufacturing accuracy at the web speed concerned is achieved by selecting a sufficiently great number n of mat-forming wheels. The invention also relates to a fiber web manufactured according to the method.