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Standard ČSN EN 1049-2 1.11.1995 preview

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ČSN EN 1049-2 (800814)

Textiles. Woven fabrics. Construction. Methods of analysis. Part 2: Determination of number of threads pr unit length (ISO 7211-2:1984 modified)



STANDARD published on 1.11.1995


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The information about the standard:

Designation standards: ČSN EN 1049-2
Classification mark: 800814
Catalog number: 18266
Publication date standards: 1.11.1995
SKU: NS-138768
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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Textile fabrics

Annotation of standard text ČSN EN 1049-2 (800814):

Tato část normy stanoví tři metody pro určování dostavy ve tkaninách. Každou ze tří metod je možno použít, přičemž volba závisí na druhu tkaniny. Pro případ rozhodování sporu se však doporučuje metoda A. Metoda A: Vypárání tkaniny, způsob vhodný pro všechny druhy tkanin. Je to pracovně nejnáročnější metoda, má ale méně omezení než ostatní metody; především je to jediná metoda, která je skutečně vhodná pro zkoumání určitých dvojitých vazeb a jiných komplikovaných druhů tkanin. Metoda B: Zařízení pro stanovení dostavy /textilní lupa/, vhodné pro tkaniny s více než 50 nitěmi na centimetr. Metoda C: Rastrové zařízení pro stanovení dostavy, které je vhodné pro všechny tkaniny. Je-li dostava na centimetr malá, může být účelné udávat výsledky jako dostavu na decimetr, vztaženo na měřenou vzdálenost. POZNÁMKA - Metody, které používají rastry s rovnoběžně nebo kónicky probíhajícími čarami, jsou uvedeny pro informaci v příloze. Tyto metody nejsou ještě dosti podrobně prozkoumány tak, aby bylo možné je zařadit jako normalizované zkušební postupy. Mohou však poskytovat hrubé a rychlé přibližné hodnoty pro výrobní kontrolu

Preview of the standard ČSN EN 1049-2 (800814)

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