...Bo Zhao Purpose – The air drawing model plays an important in spunbonding. The purpose of this paper is to study the influence of the density and the specific heat capacity of polymer melt at constant pressure changing with polymer temperature on the fiber diameter. Design/methodology/approach...

...Xiuchen Wang; Xiaojiu Li Purpose The purpose of this paper is to propose a new recognition algorithm on quadratic local extremum for fabric density recognition. Design/methodology/approach The density wave is established to correctly detect density by searching local extremes. The gray wave...