发明名称 |
Wear-resistant perforated sheet, especially for filter screens and drums |
摘要 |
Perforated sheet or drum produced from such a sheet, employed in screens and presses for the crude paper pulp industry and for the papermaking industry, the holes made in the said sheet being either round holes or elongate slots, the said sheet being furthermore completely planar or provided with ribs, ridges, projections, grooves or the like and being characterised in that at least a proportion of the filter surfaces of the said sheet 1 is equipped with a hard surface layer provided with a diffusion coating.
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申请公布号 |
FR2600551(A1) |
申请公布日期 |
1987.12.31 |
申请号 |
FR19870008887 |
申请日期 |
1987.06.24 |
申请人 |
AHLSTROM CORP A |
发明人 |
MARKKU KARKKAINEN, JOUKO LASSILA, MAUNO SELKOJOKI ET HEIKKI RISTOLAINEN;LASSILA JOUKO;SELKOJOKI MAUNO;RISTOLAINEN HEIKKI |
分类号 |
B01D33/067;C23C8/70;C23C30/00;D21D5/16;(IPC1-7):B01D33/06;C23C8/08;C23C8/22;D21D5/06 |
主分类号 |
B01D33/067 |
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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