OPENING
Fig. – Openness of the fiber material after the various blowroom machine stages;
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The first operation required in the blow room line is opening, carried out to the stage of tufts – in contrast to the cards, where it is performed to the stage of individual fibers. Tuft weight can be reduced to about 0,1 mg in the blow room. Artzt, Schenek and Al Ali [2] indicate that the degree of opening changes along a blow room line as shown in Fig. 2. This line is a theoretical layout for study purposes only. The flattening of the curve toward the end shows that the line is far too long. It should end somewhere at machine No. 3 or (at least) No. 4. The small improvements by each of the subsequent machines are obtained only by considerable additional effort, stressing of the material, unnecessary fiber loss and a striking increase in nippiness. If necessary the card is able to assume rather more of the overall task. |
- GENERAL FACTORS INFLUENCING OPENING AND CLEANING
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Degree of opening, degree of cleaning and fiber loss are primarily dependent upon, and can therefore be influenced by:
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