| 发明名称 |
METHOD AND APPARATUS FOR FIBRILLATION OF CELLULOSE CONTAINING MATERIALS |
| 摘要 |
In a method for manufacturing fibril cellulose, cellulose based fibre raw material is processed mechanically in a refining gap for separating fibrils. The fibres to be refined are subjected to the action of a surface roughness Ra provided by grits elevated from a refining surface delimiting the refining gap, said surface roughness being lower than 3 μm, advantageously lower than 2 μm. The refining surface is formed by spraying grits and binder onto a substrate. |
| 申请公布号 |
US2015057442(A1) |
申请公布日期 |
2015.02.26 |
| 申请号 |
US201214128947 |
申请日期 |
2012.06.20 |
| 申请人 |
Björkqvist Tomas;Gustafsson Sirkka;Koskinen Timo;Nuopponen Markus;Vahniäinen Annikki;Fredrikson Antti |
发明人 |
Björkqvist Tomas;Gustafsson Helmer;Koskinen Timo;Nuopponen Markus;Vehniäinen Annikki;Fredrikson Antti |
| 分类号 |
D21D1/20;C08B15/00;B02C19/00 |
主分类号 |
D21D1/20 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. A method for manufacturing fibril cellulose, comprising:
processing cellulose based fiber raw material mechanically in a refining gap; delimiting the refining gap by a refining surface having a surface roughness Ra lower than 3 μm, said surface roughness being provided by grits elevated from the refining surface; subjecting the fibers to be refined to action of the surface roughness Ra provided by said grits; and separating fibrils by means of the action of said surface roughness. |
| 地址 |
US |
