Investigating Carded Yarn Quality through Cross-Doubling in the Draw frame: A Comprehensive Analysis

A carding machine's performance has an impact on the quality of the carded sliver, which in turn affects the quality of the carded yarn produced. Several factors can influence a machine's efficiency, resulting in fluctuations in the slivers generated over time. To achieve consistent and re...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Tekstilec (Spletna izd.) 2024-06, Vol.67, p.128-138
Hauptverfasser: Chakrabortty, Amit, Khan, Siyam Quddus
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A carding machine's performance has an impact on the quality of the carded sliver, which in turn affects the quality of the carded yarn produced. Several factors can influence a machine's efficiency, resulting in fluctuations in the slivers generated over time. To achieve consistent and reproducible quality levels, slivers from all carding machines must be blended homogeneously. This blending process is vital for achieving homogeneity in the final product and maintaining a high quality standard. This can be achieved by cross-doubling. In this technique, carded slivers are arranged into categories of good, medium and low quality based on the nep removal efficiency of the carding machine behind the breaker draw frame. This is a specific type of doubling process. The focus of this research was the effectiveness of the aforementioned practice. Three carding machines were selected out of seven based on the quality level of the produced carded sliver, which was measured by nep removal efficiency. Yarn samples of 29.5 tex were produced from the slivers of the individual carding machines and by cross-doubling them at the breaker draw frame. Samples were collected at each stage of processing and tested. The results showed that cross-doubling significantly reduced variation in the imperfection level and yarn strength, but had very little effect on the mass variation level of the strands. Furthermore, the categorization of the four samples for selection was carried out using the Analytic Hierarchy Process method. This study will provide a guideline for new spinners to enhance yarn quality through cross-doubling on a draw frame machine. Delovanje mikalnika vpliva na kakovost mikanega pramena, kar posledično vpliva na kakovost izdelane mikane preje. Več dejavnikov lahko vpliva na učinkovitost stroja, ki lahko povzročijo nihanja v pramenu. Za doseganje konsistentnosti in ponovljivosti lastnosti je treba pramene z vseh mikalnikov homogenizirati z mešanjem oz. združevanjem pramenov z različnih mikalnikov. Postopek združevanja pramenov je ključnega pomena za doseganje homogenosti končnega izdelka in ohranjanje kakovosti. To je mogoče doseči z združevanjem mikalniških pramenov pred prvim raztezanjem. Na podlagi učinkovitosti odstranjevanja nopkov na mikalniku je treba pri tem postopku mikane pramene za raztezalom razvrstiti po kakovosti v kategorije dobri, srednji in slabi. To je poseben postopek združevanja pred prvim raztezanjem, katerega učinkovitost je bila proučena v t
ISSN:0351-3386
2350-3696
DOI:10.14502/tekstilec.67.2024031