Title:
ELECTRET CLOTH
Document Type and Number:
Japanese Patent JP2531475
Kind Code:
B2
Abstract:
PURPOSE: To increase an electric effect to an external field and to obtain electric absorption effect for dusts, fine particles, bacteria, etc., by increasing a difference of surface charge densities of front and rear surfaces.
CONSTITUTION: Cloth 6 supplied by a feed roll 5 is so supplied that its one side surface is brought into contact with semiconductor liquid of a surface wetted with a liquid-containing material 4 fed by turn rolls 7, 8, and subjected to an electret processing by a needlelike electrode 10 mounted in a space through a high voltage generator 9. In this case, adhesive properties of a material to be subjected to the electret processing with a ground electrode made of the liquid-containing material are improved to sufficiently inject charge, and a difference of surface charge densities of front and rear surfaces is set to 4×10-10-9×10-10 coulomb/cm2. Thus, it can be made excellent as a dust-proof cap material.
Inventors:
TOGASHI RYOICHI
ANDO KATSUTOSHI
ANDO KATSUTOSHI
Application Number:
JP23359592A
Publication Date:
September 04, 1996
Filing Date:
September 01, 1992
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
A41D13/00; A41D31/00; A47L13/16; D06M10/00; D06M10/02; H01G7/02; D06M101/00; D06M101/16; D06M101/18; D06M101/20; D06M101/22; (IPC1-7): D06M10/00; A41D31/00; A47L13/16
Domestic Patent References:
| JP61102476A | ||||
| JP5915167B2 | ||||
| JP5647299B2 |