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What Does double covered yarn Mean?

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(この画像の場合は、芯ゴムは、天然ゴム糸で、カバード糸は、上糸も下糸もポリエステル糸の生成色です。) One covered yarn involves wrapping an individual layer of masking yarn around a core yarn, normally spandex. This process ends in a yarn that gives average elasticity and strength, making it ideal for a range of purposes. 中の芯糸に天然ゴム糸やポリウレタン弾性糸などを使用すると横巻ゴム... https://dickk417wxx5.wikifiltraciones.com/user

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