Textiles: manufacturing – Textile product fabrication or treatment – Fiber entangling and interlocking
Reexamination Certificate
2008-03-27
2009-06-23
Vanatta, Amy B (Department: 3765)
Textiles: manufacturing
Textile product fabrication or treatment
Fiber entangling and interlocking
C028S167000
Reexamination Certificate
active
07549202
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.
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Shimizu Shin-ichi
Suzuki Tomio
Taniguchi Masahiro
Mitsubishi Rayon Engineering Co. Ltd.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Vanatta Amy B
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