PP staple fibers with better bonding performance and more soft, high speed spinning are made on the line imported. The characteristics of this fiber are discussed as follows.

The influences of spinning speed, bonding area and roller pressure on the permeability performance of PET spun-bonded prefabricated vertical drain filters were tested and analyzed.

The preparation method of alumina hollow fiber membrane by reaction bonding of aluminum oxide (RBAO) technique combined with dry wet spinning process was introduced in this paper.