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. 20, 2001
Filed:
Sep. 02, 1999
Applicant:
Inventor:
Takashi Mikami, Tokyo, JP;
Assignee:
Tonen Tapyrus Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D04H 1/56 ;
U.S. Cl.
CPC ...
D04H 1/56 ;
Abstract
The nozzle piece of the present invention is provided with circular cross sectional nozzles having different sizes disposed in a row in front of the die, with n-numbered smaller nozzles B (hole diameter: Db) between adjacent larger nozzles A (hole diameter: Da). It gives melt-blown non-woven fabric of monolithic structure in one step, composed of fine fibers having a diameter in a range from 1 to 10 &mgr;m diameter Variance ratio F of 2.0 or more and wide fiber diameter distribution.