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:
Dec. 14, 1993
Filed:
Sep. 09, 1992
Applicant:
Inventors:
Helmer Gustafsson, Valkeakoski, FI;
Pentti Pirinen, Valkeakoski, FI;
Assignee:
Yhtyneet Paperitehtaat Oy, Walkisoft Engineering, Valkeakoski, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D04H / ;
U.S. Cl.
CPC ...
19304 ; 264121 ; 264518 ;
Abstract
The invention relates to a process and an apparatus for the dry forming of a material web from a long-fiber material, wherein fibrous material is blown into a forming space to form a porous material web on a wire passing through the forming space. The dry forming of long fibers in lengths of at least 20 mm is problematic. In accordance with the invention, this problem has been solved in such a way that