Title:
FILTER MEDIUM FOR FILTERING LIQUID
Document Type and Number:
Japanese Patent JP3784354
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a filter medium for filtering liquid with a prolonged life which filters a machining liquid containing chips with a relatively coarse particle diameter produced from a work to be cut.
SOLUTION: The filter medium is formed by integration of the filter medium layer and a support layer. The filter medium layer contains fibrillated organic fibers of <0.5-5mass% with a fiber diameter of ≤1μm and organic fibers with a fiber diameter of ≥1μm, and a part or the whole of the organic fibers with a fiber diameter of ≥1μm is treated with fibrous organic binder. This medium layer has an average void diameter of 10-50μm and a basis weight of 5-50g/m2. The support layer is composed of organic fibers with a fiber diameter of ≥8μm containing at least one kind of synthetic fibers of polyolefin, polyamide, polyester, acryl, vinylon and vinyl chloride vinyl acetate. A part of the synthetic fiber contains at least one kind of fibrous organic binders of polyester, polyolefin, and vinyl chloride vinyl acetate. This support layer has a basis weight of 20-150g/m2.
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Inventors:
Mitsuo Yoshida
Masanobu Matsuoka
Masanobu Matsuoka
Application Number:
JP2002254459A
Publication Date:
June 07, 2006
Filing Date:
August 30, 2002
Export Citation:
Assignee:
Mitsubishi Paper Mills Co., Ltd.
International Classes:
B01D39/16; D21F11/14; D21H27/00; D21H27/08; (IPC1-7): B01D39/16; D21F11/14; D21H27/00; D21H27/08
Domestic Patent References:
| JP6126112A | ||||
| JP7185239A | ||||
| JP4193316A |