Calculation Chart:
Legend:
Tex = No. of grams per 1’000 meters
dtex = No. of grams per 10’000 meters
Den = No. of grams per 9’000 meters
Nec = No. of 840 yards per pound
Nm = No. of 1’000 meters per 1’000 grams
Worsted = No. of 560 yards per pound
Note the following procedures for multi ply yarns:
Tex – system The Tex system typically names the total count of all single yarns.
Therefore, a yarn with 40 Tex 2 ply is equal to 80 Tex single.
Den – system The Denier system typically names the total count of all single yarns.
Therefore, a yarn with 1000 Den 4 ply is equal to 4000 Den single.
Nm – system The Nm system typically names the count of the single yarn only.
Therefore, a yarn Nm 40/2 is equal to Nm 20/1.
Nec – system The Nec system typically names the count of the single yarn only.
Therefore, a yarn Nec 40/2 is equal to Nec 20/1.
Clima:
To prevent extreme liveliness of yarn (snarls etc.) and high static charge of the yarn, it is recommended to have a relative humidity of ~50% - 60% and a temperature of 72 - 75 ºF resp. 22 - 24ºC