线程数是什么意思？
许多寝具制造商列出了床单和枕套的螺纹计数。该测量是指材料在材料的一个平方英寸内的各个水平和垂直线的数量。螺纹计数越高，更密集，更重的材料感觉。
螺纹计数通常被引用来测量耐用性和整体质量，但这有点误导，因为纱线的质量更为重要。具有低螺纹计数的高质量材料制成的纸张可以很容易地执行更好，并比具有更高线程计数的更高的材料质量更长。
furthermore, manufacturers frequently inflate thread counts to make their sheets seem superior to their competitors’ products. this is especially true for sheets with more than one ply (an individual layer of fabric). for example, if one ply of a given material has a thread count of 300, then a two-ply section of the same fabric might be listed with a thread count of 600 – even though adding a second layer does little to make the sheet heavier or longer-lasting.
the bottom line: pay attention to thread count, as it does affect how heavy and breathable the sheets can feel. however, take manufacturer assertions with a grain of salt – especially if the thread count exceeds 600. also remember that thread count does not apply to certain fabrics. microfiber and flannel are often measured using grams per square meter, silk is measured in momme, and jersey is measured in ounces per yard. thread counts are not normally listed for linen sheet sets.
while you shouldn’t put too much stock in the thread count of a bedding set, you can use the following ranges to evaluate sheets and pillowcases based on material and weave:
supima棉：200-400
埃及棉质：200-400
rayon或粘胶来自竹子：200-300
亚麻：80-200
珀尔盖尔（编织）：300-600
sateen.（weave）：200-400