According to the test and spinning practice of applying Switzerland HABASIT rubber tape,the quality of medium and fine count cotton yarn was improved,especially the quality index of twist CV and strength CV was remarkably reduced.

The effect of the compound mineral fiber material on the air permeability and thickness of rice paper;

The micro-morphology of the leather surface was observed and the air permeability was accurately calculated.

The results showed that the brightness of the hand-sheets decreased with increasing dosage of SDS;and the tensile strength of hand-sheets increased first with increasing charge of SDS,then decreased;however,the tearing strength of the hand-sheets decreased first with the increasing dosage of SDS and then increased;the air permeability of the hand-sheets reached maximum at a certain dosa.

The Study on a New-type On-line Porosity Measuring System;

A test is done on pre-baked anode made from calcined coke in aspects of apparent density,real density,porosity,resistivity of powder,compressive strength,which shows compressed petroleum coke improves its chemical and physical performances.

The components, working principle and daily maintenance of the online porosity measurement system SMP600 and its application on the high-speed cigarette paper machine are introduced.

When making paper with high air-permeability, hydroxyethyl fibers are needed to be beaten in order to increase strength.

It was discussed that the air-permeability and water-absorption of decorating base paper in thepaper, the measure to control property index was still discussed in detail the Paper.