公开(公告)号：US20090126889A1

公开(公告)日：2009-05-21

申请号：US11942065

申请日：2007-11-19

申请人： James L. Thomas ,  Olivier Clot ,  Rodney H. Banks

发明人： James L. Thomas ,  Olivier Clot ,  Rodney H. Banks

IPC分类号： D21F13/00 ,  D21H19/36 ,  D21H19/54 ,  D21H19/56

CPC分类号： G01N21/643 ,  D21H19/36 ,  D21H19/54 ,  D21H21/30 ,  D21H23/78 ,  G01N21/8422 ,  G01N21/86 ,  G01N21/91 ,  G01N33/346 ,  G01N2021/6484 ,  G01N2021/8416 ,  G01N2021/8427 ,  G01N2021/8917

摘要： A method of monitoring and optionally controlling the addition of one or more surface additives to a papermaking process is disclosed. The method comprises the following steps: (a) adding a known amount of one or more surface additives to a papermaking process either alone or in known proportion with a known amount of one or more inert fluorescent tracers, wherein the surface additives can only be added alone when the surface additives are capable of fluorescing; (b) measuring the fluorescence of the surface additives and/or one or more inert fluorescent tracers at a point subsequent to adding the surface additives and after a sheet has been formed, wherein the surface additives can only be measured when they are capable of fluorescing and wherein fluorescence is measured with a reflectance based fluorometer; (c) correlating the amount of fluorescence of the surface additives when they are capable of fluorescing and/or inert fluorescent tracers on a sheet with the concentration of the surface additives in a coating on a sheet and/or thickness of a coating on a sheet; and (d) optionally controlling the addition of one or more surface additives to a papermaking process by adjusting the amount of the surface additives added to the papermaking process in response to the coating thickness on a sheet and/or concentration of the surface additives in a coating on a sheet.

摘要翻译： 公开了一种监测和可选地控制将一种或多种表面添加剂添加到造纸方法中的方法。 该方法包括以下步骤：（a）将已知量的一种或多种表面添加剂单独或以已知量与已知量的一种或多种惰性荧光示踪剂单独或以已知比例加入造纸工艺中，其中仅添加表面添加剂 当表面添加剂能够发荧光时; （b）测量表面添加剂和/或一个或多个惰性荧光示踪剂在添加表面添加剂之后和形成片材之后的荧光，其中表面添加剂仅当它们能够发荧光时才能被测量 并且其中使用基于反射率的荧光计测量荧光; （c）当片材上的表面添加剂能够发荧光和/或惰性荧光示踪剂时，将表面添加剂的荧光量与片材上的表面添加剂的浓度和/或片材上的涂层的厚度相关联 ; 和（d）任选地通过调节添加到造纸工艺中的表面添加剂的量来响应于片材上的涂层厚度和/或在一个或多个表面添加剂中的浓度来任意地控制一个或多个表面添加剂到造纸过程中的添加量 涂在片材上。