(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。) Solitary covered yarn will involve wrapping only one layer of masking yarn close to a Main yarn, commonly spandex. This method brings about a yarn which offers moderate elasticity and energy, making it appropriate for a variety of purposes. 弾性糸に、下糸(左側)が巻かれ、その上にさら... https://frankt740egg9.worldblogged.com/profile