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公开(公告)号:US09987829B2
公开(公告)日:2018-06-05
申请号:US14778342
申请日:2014-03-27
IPC分类号: B32B37/10 , B32B29/00 , D21H27/30 , D21C5/02 , D21F11/04 , D21F11/08 , D21H11/00 , D21H11/04 , D21H11/14 , D21H15/02 , D21H23/04 , B32B37/08
CPC分类号: B32B29/005 , B32B37/08 , B32B37/10 , B32B2250/26 , D21C5/02 , D21F11/04 , D21F11/08 , D21H11/00 , D21H11/04 , D21H11/14 , D21H15/02 , D21H23/04 , D21H27/30 , Y02W30/648
摘要: The invention relates to a method for producing a core card (20) with at least the steps of a) providing a reprocessed fibrous mixture having at least the following properties: the Brecht-Holl fine fraction is at most 50% by weight; the Brecht-Holl long fiber fraction is at least 10% by weight; the Brecht-Holl short fiber fraction is at most 60% by weight; and the ISO 1762 ash fraction is at most 20% by weight, b) preparing at least one fibrous suspension, c) processing the at least one fibrous suspension by carrying out at least one de-ashing of the fibrous suspension until the ash fraction of the dry component of the fibrous suspension is at most 15% by weight, and by adding at least one additive to the at least one fibrous suspension d) producing the laminar system from the at least one fibrous suspension.