发明名称 |
Filter paper for an edge-type filter |
摘要 |
A flat annular disc filter paper has a plurality of randomly oriented fibers at its surface. The paper is impregnated with a phenolic resin so as to resist compression of the disc and swelling of the paper. The filter paper is made by soaking the paper in the resin, heating the paper and resin so as to burn and melt the resin into close contact with the paper and rolling the filter paper at a temperature above ambient temperature.
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申请公布号 |
US4810380(A) |
申请公布日期 |
1989.03.07 |
申请号 |
US19870047368 |
申请日期 |
1987.05.06 |
申请人 |
BACKMAN, SUNE;HAKANSON, HAKAN |
发明人 |
BACKMAN, SUNE;HAKANSON, HAKAN |
分类号 |
B01D25/00;D21H27/08;(IPC1-7):B01D25/04 |
主分类号 |
B01D25/00 |
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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