| Zdroj: |
Asian Textile Journal; Jun2004, Vol. 13 Issue 6, p59-67, 5p, 1 Black and White Photograph, 1 Diagram, 1 Chart, 3 Graphs |
| Abstrakt: |
This article looks at the development and efficiency of various testing methods used for cotton fibers. High volume instruments were developed in the 1970s to enable important parameters of cotton fibers to be measured rapidly and easily. These are the characteristics which are still used, as of 2004, for classifying cotton fibers, such as fiber length, fiber tenacity, micronaire and grade, and which can be said to represent the requirements of the trade. The development of high volume instruments at the end of the 1970s made it possible to measure the important parameters of cotton fibers. Testing of intermediate products in spinning mills is only essential when raw materials or blends are changed. In textile machinery manufacturing, testing of all intermediate products and the machine settings is customary in order to enable machines under development to be evaluated and improved. In the past, damage to cotton fibers during processing could be detected only on the basis of fiber shortening or a higher short fiber content. However, the latest developments no longer make provision for sliver clamps. End-oriented measuring methods permit more accurate and detailed inference of fiber damage than the span length method, and in this case, all intermediate products can be evaluated. |
