发明授权
US06251222B1 Filler for use in paper manufacture and procedure for producing a filler
失效
用于纸张制造的填料和用于生产填料的程序
- 专利标题： Filler for use in paper manufacture and procedure for producing a filler
- 专利标题（中）： 用于纸张制造的填料和用于生产填料的程序
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申请号： US08973926申请日： 1998-03-05
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公开(公告)号： US06251222B1公开(公告)日： 2001-06-26
- 发明人: Petri Silenius , Markku Leskela
- 申请人： Petri Silenius , Markku Leskela
- 优先权： FI953238 19950629
- 主分类号： D21H1770
- IPC分类号： D21H1770
摘要：
The invention relates to a filled used in paper manufacture and mainly consisting of calcium carbonate, and to a procedure for producing the filler. The filler consists of porous aggregates formed by precipitated calcium carbonate particles. In the procedure, calcium carbonate is precipitated.
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