Title:
FILTER MATERIAL
Document Type and Number:
Japanese Patent JP3534043
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make pleat workability excellent, to eliminate the stripping of a sheet and to attain high collecting performance by utilizing non-woven fabric composed of a core sheath type filament, in which a core is made out of a high m.p. component and a sheath is made out of a low m.p. component, partially thermocompression bonded and having specific value of weight.
SOLUTION: The non-woven fabric of a structural material of the filter material is composed of the core sheath type filament having the core of the high m.p. component and the sheath of the low m.p. component, has 200-360 g/m2 weight and is partially thermocompression bonded. The relation between the weight (X: g/m2) and the rigidity (Y: mgf) of the non-woven fabric is preferably Y/X2≥0.03. As the high m.p. and low m.p. polymer used for the filament, any polymer such as polyester, nylon, polypropylene or one obtained by adding a 3rd component in the polymer can be applied. the ratio of the low m.p. component per all fabric component is preferably 5-30 wt.%.
Inventors:
Horiguchi, Yasuyoshi
Nishimura, Makoto
Iwasaki, Kaori
Nishimura, Makoto
Iwasaki, Kaori
Application Number:
JP2000207947A
Publication Date:
June 07, 2004
Filing Date:
September 28, 1994
Export Citation:
Assignee:
TORAY IND INC
International Classes:
D06J1/12; B01D39/16; D04H3/16; (IPC1-7): B01D39/16; D04H3/16; D06J1/12
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