This article describes on the problems of web break,paper face spots during the production of kraft paperboard because of the use of OCC and chemical additives such as modified starch when antiseptic agent is not added.

A new method that predicts paper breaking based on differentiating between stationary property and non-stationary property of some random signals including beating degree,basis weight and moisture is presented.

Processing Measures of Reducing Spinning Broken Ends;

The tuckstones with broken end and bearing plate for breast wall can be replaced without demolishing breast wall during cold repair.

According to practical experience,the paper analyzed the factors to cause end breakage of small yarn package at the first floor of polyester POY post processing,put forward the control methods,which can improve production efficiency and quality.