发明名称 |
METHOD AND APPARATUS FOR PREPARATION OF MINERAL FIBRE BASED GROWTH MEDIUM, A PLANT GROWTH MEDIUM AND USE OF IT |
摘要 |
A process for the preparation of a plant growth medium having a density gradient, comprising the steps of providing a primary web comprising mineral fibre material and a curable binding agent, compressing the primary web in at least one longitudinally extending zone in such a manner that the applied pressure increases substantially continuously in the latitudinal direction of the zone, forming a secondary web by bringing the primary web overlap itself, optionally compressing said secondary web and curing the binding agent. |
申请公布号 |
CA2322591(A1) |
申请公布日期 |
1999.09.23 |
申请号 |
CA19992322591 |
申请日期 |
1999.03.19 |
申请人 |
ROCKWOOL INTERNATIONAL A/S |
发明人 |
CRIDLAND, IAN;NORGAARD, LUIS;KIRKEBAEK, JORGEN |
分类号 |
A01G1/00;A01G31/00;D04H1/4209;D04H1/4218;D04H1/4226;D04H1/587;D04H1/60;D04H1/64;D04H1/70;D04H1/732;D04H1/736;D04H1/74;D04H13/00 |
主分类号 |
A01G1/00 |
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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