Title:
POLYOLEFIN-BASED SPLIT-TYPE CONJUGATE FIBRE, FIBROUS MASS AND CELL SEPARATOR USING SAME, AND PRODUCTION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2011/122657
Kind Code:
A1
Abstract:
The disclosed polyolefin-based split-type conjugate fibre is a compositely spun polyolefin-based split-type conjugate fibre which contains a first component that includes a polypropylene-based resin, and a second component that includes a polyolefin-based resin. The first component includes, as the main component thereof, a polypropylene resin wherein the Q-value (weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio) is not less than 6, and the melt flow rate (MFR; measured temperature 230˚C, load 2.16kgf (21.18N)) equivalent to JIS K 7210 is at least 5g/10 minutes but less than 23g/10 minutes; and the first component and the second component are adjacent to one-another in the cross section of the polyolefin-based split-type conjugate fibre. Furthermore, the disclosed polyolefin-based split-type conjugate fibre can be obtained by using a split-type composite nozzle to melt spin the first component and the second component, and then stretching the resulting fibre.
Inventors:
KIDA Tatsunori (())
Application Number:
JP2011/057995
Publication Date:
October 06, 2011
Filing Date:
March 30, 2011
Export Citation:
Assignee:
DAIWABO HOLDINGS CO., LTD. (6-8 Kyutaromachi 3-chome, Chuo-ku Osaka-sh, Osaka 56, 〒5410056, JP)
ダイワボウホールディングス株式会社 (〒56 大阪府大阪市中央区久太郎町３丁目６番８号 Osaka, 〒5410056, JP)
DAIWABO POLYTEC CO., LTD. (6-8 Kyutaromachi 3-chome, Chuo-ku Osaka-sh, Osaka 56, 〒5410056, JP)
ダイワボウホールディングス株式会社 (〒56 大阪府大阪市中央区久太郎町３丁目６番８号 Osaka, 〒5410056, JP)
DAIWABO POLYTEC CO., LTD. (6-8 Kyutaromachi 3-chome, Chuo-ku Osaka-sh, Osaka 56, 〒5410056, JP)
International Classes:
D01F8/06; D04H1/42; D04H1/48; D04H1/72; H01M2/16
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (26th Floor, OAP TOWER 8-30, Tenmabashi 1-chome, Kita-ku, Osaka-sh, Osaka 26, 〒5306026, JP)
Download PDF:
Claims: