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:
Jan. 15, 2002
Filed:
Feb. 02, 2000
William H. Hills, Melbourne Village, FL (US);
Hills, Inc., West Melbourne, FL (US);
Abstract
A spunbond web formation apparatus includes a spinneret ( ) of a spin pack ( ) that extrudes an array of fibers ( ) that are drawn into an aspirator (6). The attenuated fibers ( ) discharged from aspirator ( ) are deflected sideways by a Coanda device ( ) that entrains the exiting air stream along with the fibers. The fibers are deposited on a vertically moving belt ( ) and subsequently bonded by calender rolls ( ) to form a non-woven spunbond web. The spinning distance L is adjusted by vertically moving the aspirator ( ), while the laydown distance M is adjusted by horizontally moving the belt ( ) or aspirator ( ) or by adjusting the size of the Coanda device ( ). Deflection of the fibers exiting the aspirator permits the spinning distance L to be adjusted independently of the laydown distance M, without having to move the spin beam or adjust the height of the web-forming belt.