. uster technologies ltd. type subsidiary industry industrial engineering and manufacturing founded 2003 through management buy out ; origins from 1875 headquarters uster switzerland area served worldwide key people dr. geoffrey scott ceo philip mosimann chairman of the board website www.uster.com uster technologies in its industry often called uster is a swiss manufacturer of analytical instruments and on line monitoring systems for the textile industry based in uster switzerland . it emerged as a management buy out form of the zellweger luwa group in 2003 . from 2007 until 2012 the company was publicly traded and listed on the main segment of six swiss exchange . since 2012 uster technologies is a subsidiary of toyota industries corporation . contents 1 products and services 1.1 for cotton ginning classing and trading 1.2 for yarn production 2 history 3 references 4 external links products and services edit uster technologies mainly produces laboratory and on line systems used to measure and control the quality of fibers and yarns . for cotton ginning classing and trading edit modern industrial cotton gins often operate with sensors by uster to control their process and to the resulting fiber quality . cotton classing is required to measure and classify each cotton bale according to its specific physical attributes . measurement information produced by uster s hvi high volume instrument covers following parameters fiber length length uniformity fiber strength fiber maturity short fiber content micronaire fiber fineness color grade leaf and extraneous matter . when cotton is traded its value is determined by the above mentioned quality parameters as measured by the hvi in the classing agencies . hence uster s hvi has defined a set of standards for a large part of all cotton trades worldwide . 1 for yarn production edit uster products are used in the spinning mill for measuring and analyzing the quality of the raw materials i.e. fibers of different materials intermediate products i.e. sliver roving and final product i.e. yarn along their entire manufacturing process . most important process parameters a spinning mill has to control are quality of the incoming fibers yarn evenness hairiness tensile strength and elongation contamination with disturbing materials twist friction etc. by measuring these parameters the instruments can be used as tools for a mill wide quality assurance process . 2 an overview of uster products applied in the spinning mills the uster tester a laboratory system for the measurement of evenness thick places thin places neps hairiness diameter dust trash fineness of yarns yarn tensile testers at conventional 5m min and high speeds 400m min yarn fineness tester yarn twist tester yarn friction tester single fiber measuring system afis advanced fibre investigation system fiber bundle measuring system hvi yarn clearer uster quantum which is mounted in the automatic winding machine i.e. on line defect classification instrument classimat cotton cleaning system vision shield while developing these different testing instruments often the first of their kind uster also had to invent either the measuring method or the suitable measurement parameters . 3 some examples 4 measurement object parameter explanation instrument cotton fibers neps number of neps per gram afis cotton fibers neps mean size of neps m afis cotton fibers immature fibers immature fiber content in % afis yarn uster evenness coefficient of yarn mass variation uster tester yarn imperfections thick places thin places and neps uster tester yarn uster hairiness total length of protruding fibers per sensor length uster tester yarn weak places at 400m min strength of one percent of the weakest values uster tensojet for comparing such quality parameters in the spinning laboratory with those of other spinning mills worldwide uster established a number of benchmarks . the first so called uster statistics were introduced in 1957 and have been periodically updated to account for the technical and regional changes in the industry . these statistics are an important element in the trading of yarns as they allow yarns to be objectively specified and referred to a world wide quality level . uster technologies also runs the usterizing certification program for spinning mills . history edit the roots of the company date back to 1875 when an aerial telegraphy workshop was established in uster switzerland . 1927 the production of weaving preparatory machines started under the brand uster 1944 the company started research and development for textile electronics mainly for the swiss spinning mills 1948 the company launched the first ever yarn evenness tester under the name zellweger uster . being one of the first of its kind this instrument and its following product generations became well known worldwide which explains why the company was able to file uster as a registered trademark while being located in the city of the same name . 1957 the company published the first set of quality standards for yarn evenness called uster statistics 1989 acquisition of schaffner technologies usa 1990 acquisition of spinlab usa 1993 acquisition of peyer switzerland 2003 buyout from zellweger luwa by management and two private equity investment companies 2005 establishment of development and manufacturing site in suzhou china 2006 secondary buyout by management and funds advised by alpha beteiligungsberatung gmbh & co. kg 2007 listing on main segment of six swiss exchange 2008 introduction of new product groups specifically targeting the mid market segment 2009 acquisition of zweigle products germany 2012 public takeover by toyota industries corporation 2013 acquisition of jossi systems references edit us cotton standards . united nations conference on trade and development . efficient yarn production . textile world . obituary of dr. h.c. hans locher former general director and chairman of the board of zellweger uster ltd. . the textile institute . retrieved 2009 12 18 . quality parameters measured by uster technologies equipment pdf . uster technologies ltd. retrieved 2009 12 18 . external links edit corporate web site uster.com usda explanation of cotton classification data cotton incorporated classification of cotton companies portal retrieved from https en.wikipedia.org w index.php title uster technologies & oldid 649844100 categories manufacturing companies of switzerlandcompanies established in 1875textile machinery manufacturersuster navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a 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