Time-Dependence of Stop Marks in Warp-Knitted Fabrics

Stop marks are one of the most frequently occurring errors in warp-knitted fabrics. They become visible in a fabric each time a warp-knitting machine stops and restarts. Nevertheless, investigations of such stop marks are rarely found in scientific literature. Here, we report on time-dependent inve...

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Main Authors: Christian Hellert, Michael Kieren, Andrea Ehrmann
Format: Article
Language:English
Published: University of Ljubljana Press (Založba Univerze v Ljubljani) 2022-03-01
Series:Tekstilec
Subjects:
Online Access:https://journals.uni-lj.si/tekstilec/article/view/11947
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author Christian Hellert
Michael Kieren
Andrea Ehrmann
author_facet Christian Hellert
Michael Kieren
Andrea Ehrmann
author_sort Christian Hellert
collection DOAJ
description Stop marks are one of the most frequently occurring errors in warp-knitted fabrics. They become visible in a fabric each time a warp-knitting machine stops and restarts. Nevertheless, investigations of such stop marks are rarely found in scientific literature. Here, we report on time-dependent investigations of stop marks in warp-knitted fabrics. Microscopic examination of stop marks after stopping times ranging between 1 s and 7 weeks revealed a superposition of the common stop mark due to imperfectly matching rotational speeds of the warp beam and main shaft, and an additional effect due to relaxation in the machine.
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issn 0351-3386
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language English
publishDate 2022-03-01
publisher University of Ljubljana Press (Založba Univerze v Ljubljani)
record_format Article
series Tekstilec
spelling doaj-art-a767e71c5510459d91ad2e6d9ac4afa82025-08-20T03:17:58ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Tekstilec0351-33862350-36962022-03-0165210.14502/tekstilec.65.202200118316Time-Dependence of Stop Marks in Warp-Knitted FabricsChristian Hellert0Michael Kieren1Andrea Ehrmann2https://orcid.org/0000-0003-0695-3905Bielefeld University of Applied Sciences, Faculty of Engineering and Mathematics, 33619 Bielefeld, GermanyKarl Mayer Stoll R&D GmbH, 63179 Obertshausen, GermanyBielefeld University of Applied Sciences, Faculty of Engineering and Mathematics, 33619 Bielefeld, Germany Stop marks are one of the most frequently occurring errors in warp-knitted fabrics. They become visible in a fabric each time a warp-knitting machine stops and restarts. Nevertheless, investigations of such stop marks are rarely found in scientific literature. Here, we report on time-dependent investigations of stop marks in warp-knitted fabrics. Microscopic examination of stop marks after stopping times ranging between 1 s and 7 weeks revealed a superposition of the common stop mark due to imperfectly matching rotational speeds of the warp beam and main shaft, and an additional effect due to relaxation in the machine. https://journals.uni-lj.si/tekstilec/article/view/11947stop markswarp knittingmicroscopyimage evaluation
spellingShingle Christian Hellert
Michael Kieren
Andrea Ehrmann
Time-Dependence of Stop Marks in Warp-Knitted Fabrics
Tekstilec
stop marks
warp knitting
microscopy
image evaluation
title Time-Dependence of Stop Marks in Warp-Knitted Fabrics
title_full Time-Dependence of Stop Marks in Warp-Knitted Fabrics
title_fullStr Time-Dependence of Stop Marks in Warp-Knitted Fabrics
title_full_unstemmed Time-Dependence of Stop Marks in Warp-Knitted Fabrics
title_short Time-Dependence of Stop Marks in Warp-Knitted Fabrics
title_sort time dependence of stop marks in warp knitted fabrics
topic stop marks
warp knitting
microscopy
image evaluation
url https://journals.uni-lj.si/tekstilec/article/view/11947
work_keys_str_mv AT christianhellert timedependenceofstopmarksinwarpknittedfabrics
AT michaelkieren timedependenceofstopmarksinwarpknittedfabrics
AT andreaehrmann timedependenceofstopmarksinwarpknittedfabrics