In order to meet the strict requirements for ACSR by utilities, which include, among others, high compact construction and round and smooth surface, a pre twist is added to the tubular strander.

Technology study of 4.2 tex low mixed combed cotton yarn compact spinning;

The preliminary application exploratory of compact spinning in cashmere worsted spinning;

Research on cross-section layout of compact spinning;

By using particle dense packing theory,the influence of particle size distribution of cementitious material on microstructure and st rength of cement gel were discussed in this paper.

In this paper,by using the Andreasen theory of the dense packing powder,the author mixed the mineral admixtures in certain proportion to make the particle size distribution of the cementitious materials similar to that of the state of dense packing.

It is tried to summarize the relationship between the dense packing property and so factors, such as percentage, fineness or the particle size distribution of those mineral powders.

Impacting factors on rotary printing of high quality compact fabric;