首页>
外国专利>
Method for regulation and on-line measurement of the fibre orientation in a web produced by means of a paper machine
Method for regulation and on-line measurement of the fibre orientation in a web produced by means of a paper machine
展开▼
机译：借助造纸机调节和在线测量纤维网中纤维取向的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for regulation of the transverse distribution of the fibre orientation of a web produced by means of a paper machine or equivalent by regulating the transverse profile of the discharge opening (16) of the headbox (10) of the paper machine. The transverse grammage profile of the paper web (W₀...W₁) produced by means of the paper machine is measured, and the measurement signal obtained in this way is used as a feedback signal in the control system. With the machine configuration and parameters present in the paper machine to be controlled, data are collected concerning the relationship between the directional angle of the transverse distribution of fibre orientation and the transverse distribution of grammage of the web (W₀...W₁) that is being produced by, by means of the paper machine, carrying out response runs in its various states of operation (i). The relation data are stored in the memory of the computer (52). By making use of the relation data, the distribution of fibre orientation in the web (W₀...W₁) to be produced is corrected by regulating the transverse profile of the discharge opening (16) of the headbox (10). Moreover, a corresponding method for on-line measurement of the fibre orientation is described.
展开▼
