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:
Jun. 23, 2009
Filed:
Mar. 27, 2008
Masahiro Taniguchi, Tokyo, JP;
Tomio Suzuki, Hiroshima, JP;
Shinichi Shimizu, Aichi, JP;
Mitsubishi Rayon Engineering Co., Ltd., Tokyo, JP;
Abstract
The present invention relates to a nozzle suitable for jetting high pressure and high temperature steam, and a method and an apparatus for producing an entangled nonwoven fabric using the nozzle. According to the apparatus, a steam inlet side main conduit and a steam outlet side conduit are connected with both end parts of a tubular nozzle holder in a longitudinal direction provided integrally with nozzle members having a plurality of nozzle holes. A steam outlet side conduit is provided with an opening/closing valve and a trap conduit is branched from a conduit at an upstream side from the opening/closing valve. By opening the opening/closing valve, a rapid temperature rise of the nozzle holder can be enabled at a time of starting a production of a nonwoven fabric. Furthermore, even in the opening/closing valve is closed in a regular operation, drainage generated inside the nozzle holder can always be discharged to outside so that steam can be jetted stably and continuously, and thus a high quality entangled fiber nonwoven fabric can be produced continuously from the fiber web by the steam.