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. 19, 1999
Filed:
Nov. 28, 1995
Friedrich Weger, Berlin, DE;
Luder Gerking, Berlin, DE;
Karl Fischer Industrieanlagen GmbH, Berlin, DE;
Abstract
The invention relates to a device for manufacturing spun-bonded webs with a nozzle arrangement which spins out warps of yarns. The device according to the invention has a longitudinally-extended duct for generating a gas current which transports the yarns in the duct, and a depositing chamber with an air-permeable deposit belt for deposition of the yarns. The deposit chamber (9) surrounds the conveyor belt (2) in the deposition area of the yarns, and is in the form of a gas-tight casing (9), the width of which is greater than the width of the deposit belt. By means of the casing, a greater degree of vacuum may be used to generate the gas current, and thus the yarns are more intensively drawn. Furthermore, undesirable turbulence of the yarns at the edges of the deposit belt is reduced, and an improvement is achieved in the web structure in these areas.