公开(公告)号：US06413368B1

公开(公告)日：2002-07-02

申请号：US08248543

申请日：1994-05-24

申请人： John Henry Dwiggins ,  Dinesh M. Bhat

发明人： John Henry Dwiggins ,  Dinesh M. Bhat

IPC分类号： D21F100

CPC分类号： D21F11/002 ,  Y10S162/11

摘要： Apparatus and process for producing foam formed fibrous web in which the furnish is made up by mixing a thin water slurry of fibers at a consistency in the range of from about 0.5 to about 7 weight percent fibers with sufficient aqueous foam containing a surfactant and having an air content in the range of from about 55 to about 80 percent by volume to form a foamed fiber furnish containing from about 0.1 to about 3 weight percent fibers which is supplied directly to the forming felt or wire of a twin wire papermaking machine, adding makeup surfactant and discarding excess aqueous foam from the process as required to maintain the desired volume of foamed liquid therein.

公开(公告)号：US06500302B2

公开(公告)日：2002-12-31

申请号：US09994187

申请日：2001-11-26

申请人： John Henry Dwiggins ,  Dinesh M. Bhat

发明人： John Henry Dwiggins ,  Dinesh M. Bhat

IPC分类号： D21F100

CPC分类号： D21F11/002 ,  Y10S162/11

摘要： Apparatus and process for producing foam formed fibrous web in which the furnish is made up by mixing a thin water slurry of fibers at a consistency in the range of from about 0.5 to about 7 weight percent fibers with sufficient aqueous foam containing a surfactant and having an air content in the range of from about 55 to about 80 percent by volume to form a foamed fiber furnish containing from about 0.1 to about 3 weight percent fibers which is supplied directly to the forming felt or wire of a twin wire papermaking machine, adding makeup surfactant and discarding excess aqueous foam from the process as required to maintain the desired volume of foamed liquid therein.

摘要翻译： 用于生产泡沫形成的纤维网的装置和方法，其中配料通过将纤维的稀水浆料以约0.5至约7重量％纤维的稠度混合，并且含有足够的含有表面活性剂的含水泡沫体， 空气含量在约55至约80体积％的范围内以形成含有约0.1至约3重量％的纤维的发泡纤维配料，其直接供应到双网造纸机的成形毡或丝线，添加化妆 表面活性剂，并根据需要从过程中弃去多余的水性泡沫，以保持其中发泡液体的所需体积。