Analysis of regularized card sliver after short-termlevelling process

• Autorzy: Idzik M.
• Języki publikacji: EN

Abstrakty

EN

Doubling of sliver has ceased to be the fundamental operation for reducing the weight irregularity of spinning halfproducts, which are decisive for the quality of yarn. Its role has now been taken over by the general use of autolevellers. After leaving the regulation zone, card sliver, whose weight irregularity is reduced by a short-termautoleveller, undergoes a process of relaxation. This phenomenon takes place only in the case of regulated sliver. Unregulated slivers passing through a leveller operating with constant draft show few relaxing properties. One reason why autolevelled card sliver has such relaxing properties may be the variation of the drafting force caused by the continually changing draft. The performance of the short-term card autoleveller cannot be unequivocally evaluated. The main difficulty lies in the time span between levelling and measurement, during which the sliver undergoes relaxation. How quickly the autolevelled card sliver is fed to the next machine in the yarn manufacturing process is therefore important, because in the intervening time the initial irregularity of the product may undergo uncontrolled changes.

Słowa kluczowe

EN

spectral analysis; evenness of mass; short-term autoleveller; spinning machine

PL

analiza widmowa; równość masy; przędzarka

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2010
• Tom: Vol. 10, no. 2
• Strony: 35--38
• Opis fizyczny: Bibliogr. 6 poz., il., wykr.

Twórcy

autor

Idzik M.

• Technical University of Lodz, Department of Spinning Technology, ul. Zeromskiego 116, 90-543 Lodz, Poland

Bibliografia

• 1. E. King: Die Rolle der modernen Strecke. International Textil Bulletin. Garnherstellung 1991, No. 1.
• 2. H. Fritschi, G. Mandl, H. P. Meile: Kardenregulierung - Wirkung und Aufbau. Melliand Textilberichte 1984, No. 9.
• 3. M. Idzik: Role of Autolevellers in Modern Spinning Systems. Przeglad Wlokienniczy 1993, No. 9.
• 4. M. Idzik: Attempts at Omitting Driving in Spinning with an Autoleveller on the Card. Przegląd Włókienniczy 1993, No. 5.
• 5. S. N. Dijev: Modeling a Double-Zone Drafter as an Object of Control. Textile Research Journal 1994, No. 8.
• 6. W. Min: Function and Characteristics of Autoleveller Draw Frame. Fibres & Textiles 2005, No. 5.