发明名称 |
PLASTIC FILTER FOR PHOTOGRAPHIC DEVELOPING MACHINE |
摘要 |
PROBLEM TO BE SOLVED: To obtain a filter for a photographic developing machine which has high filtering accuracy although the filter shows small pressure loss and which can efficiently separate and filter a foreign matter in a treating tank by sintering a thermoplastic plastic material into a porous filter to have each specified porosity and pressure loss. SOLUTION: As for the thermoplastic plastic material to constitute the plastic filter for a photographic developing device, a ultrahigh mol.wt. polyethylene having an extremely small melt flow rate as <=1.0, preferably <=0.01 is used in a powder state having 50 to 700μm average particle size. The thermoplastic plastic material is sintered to obtain a film having 30 to 60vol% porosity filtering accuracty which collects foreign matters in >=30μm size and <=20mm Aq pressure loss under 1m<3> /m<2> .min flow amt. of dry air. It is preferable that the plastic filter has enough strength against compressive stress.
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申请公布号 |
JPH10216434(A) |
申请公布日期 |
1998.08.18 |
申请号 |
JP19970038537 |
申请日期 |
1997.02.07 |
申请人 |
MITSUBISHI PLASTICS IND LTD |
发明人 |
EGAWA YOSUKE;MASANO KOJI;KAMIYAMA KANJI |
分类号 |
G03D13/00;B01D39/16;(IPC1-7):B01D39/16 |
主分类号 |
G03D13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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