Toray Industries, Inc.

Ryoichi Hane

Hiroyuki Matsuura

Yoshikazu Yakake

Shingo Hayashi

Yohei Nakano

Masaki Higashi

Shinobu Mizogami

Sachio Inaba

Jun Ogihara

Naoki Shibusawa

Tatsuya Kajino

Masanori Endo

Hitoshi Yamasaki

Provided is a spunbond nonwoven fabric for use in filters which has excellent rigidity, folding endurance, and uniformity of a weight per unit area, and which also has excellent dust collection performance and mechanical properties. The spunbond nonwoven fabric for use in filters includes a thermoplastic continuous filament and has a partially fused portion. The nonwoven fabric has a stiffness of 2 mN or more and 100 mN or less, a weight per unit area-CV value of 5% or less, and a weight per unit area of 150 g/mor more and 300 g/mor less.

Spunbond nonwoven fabric for use in filters, and manufacturing method thereof

A nonwoven fabric for curtain in an embodiment of the present invention is formed from fibers having a thermoplastic resin as a main component, said nonwoven fabric for curtain being characterized in that: in the surface of the nonwoven fabric, the fibers are fused together at points where the fibers intersect, and the fibers are mutually isolated at locations other than the intersecting points; and furthermore, the KES surface roughness SMD of at least one side of the sheet is 1.2 &#x3bc;m or less, and the longitudinal tearing strength per fabric weight is 0.50 or more.

Nonwoven fabric for curtain and method for manufacture thereof

A production method for a filament non-woven fabric includes a) obtaining filaments having a crystallization temperature not exceeding 112&#xb0; C. by melting a resin containing polyethylene sulfide as a main component which is not substantially copolymerized with trichlorobenzene; b) pulling and drawing fiber threads formed by discharging the melted resin from spinning nozzles at a spinning speed of at least 5,000 m/min and less than 6,000 m/min by an ejector disposed such that a distance between a bottom face of the spinning nozzles and a compressed air emission outlet of the ejector is 450-650 mm; c) collecting obtained filaments on a moving net, forming a non-woven web; and d) thermocompression bonding the obtained non-woven web using a heating roller.

Production method for filament non-woven fabric

A support for a separation membrane includes a long-fiber nonwoven fabric composed of thermoplastic continuous filaments.

Support for separation membrane, and method for production thereof

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Otsu, Japan

Ryoichi Hane