Production of paper and paper board

专利名称：Production of paper and paper board发明人：Langley, John Graham申请号：EP89302842.3申请日：19890322公开号：EP0335575B1公开日：19930310

摘要：Paper or paper board is made by providing an aqueous cellulosic suspensioncontaining a cationic polymer and then adding cationic starch or a high molecular weightsynthetic cationic polymer, subjecting the suspension to shear, and then adding inorganicmaterial selected from bentonite or colloidal silica. The process is of particular valuewhen the suspension is formed from a mechanically derived pulp and/or deinked pulpand when the product is to be newsprint or board.

申请人：ALLIED COLLOIDS LIMITED

地址：P.O. BOX 38 LOW MOOR; BRADFORD WEST YORKSHIRE, BD12 0JZ

代理机构：Lawrence, Peter Robin Broughton

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