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:
Jul. 08, 2025
Filed:
Jul. 07, 2020
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Reifenhäuser Gmbh & Co. KG Maschinenfabrik, Troisdorf, DE;
Patrick Bohl, Hennef, DE;
Hans-Georg Geus, Niederkassel, DE;
Sebastian Sommer, Troisdorf, DE;
Tobias Wagner, Cologne, DE;
Kazuya Zeisho, Tokyo, JP;
MITSUI CHEMICALS ASAHI LIFE MATERIALS CO. LTD, Tokyo, JP;
REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK, Troisdorf, DE;
Abstract
A method for producing a nonwoven fabric made of crimped synthetic fibers, wherein the synthetic fibers are spun and are deposited on a conveyor as a nonwoven web. The deposited nonwoven web is pre-bonded by means of at least one first hot-air bonding device, wherein a main suction air is sucked from below through the conveyor in the area of fiber deposition. A first suction air is sucked from below through the conveyor in the region of the first hot-air bonding device. The air speed of the main suction air is greater than the air speed of the first suction air.