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Patent Searching and Data


Title:
BASE MATERIAL FOR DRY CLEANING FILTER AND DRY CLEANING FILTER
Document Type and Number:
Japanese Patent JPH0921053
Kind Code:
A
Abstract:

To obtain a filter base material having excellent filter performances, pollution controlling property and appearance dignity, and to obtain a filter part material for dry cleaning using the filter base material, by obtaining filament nonwoven cloth composed of polyester-based sheath-core type conjugate filaments by a spun bond method and partially thermocompression bonding.

Polyethylene terephthalate is used as a core component and a copolyester having a melting point ≥20°C lower than the polyethylene terephthalate is used as a sheath component, and a content of the sheath part is made to 10-30wt.%, preferably 15-20wt.% of the filament weight, then carbon black in an amount of 0.01-2wt.% of the filament weight is contained in the core component. The compositions are subjected to melt spinning to obtain a sheath-core type conjugate fiber and piled on a moving conveyor with opening trough an air sucker to form web, then partially thermocompression bonded by a hot embossing roller to obtain filament nonwoven cloth suitable for a base material for a filter.


Inventors:
NISHIMURA MAKOTO
IWASAKI KAORI
HORIGUCHI YASUYOSHI
Application Number:
JP16752195A
Publication Date:
January 21, 1997
Filing Date:
July 03, 1995
Export Citation:
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Assignee:
TORAY INDUSTRIES
International Classes:
D06F43/08; B01D39/16; D01F8/14; D04H3/147; D04H3/153; (IPC1-7): D04H3/14; B01D39/16; D01F8/14; D06F43/08