Opener skein and bale specifications

According to the national standard GB/T398-93 for cotton yarn, the specifications of the skein and bale of the opener are as follows:

1. Opener skein specification cotton yarn (thread) when 8.5% moisture regains, according to the needs of the user, the weight of each skein can also be 31.2 os, 62. os, 78. 125g, 12. 5g, etc.

2. Fineness specifications of the opening machine

(1) Small package: cotton yarn moisture regain rate is 8.5% (chemical fiber yarn is based on the conventional moisture regain rate of different chemical fiber raw materials), the weight of each small package yarn is 5kg, which is equivalent to: weighing 4.608kg, each small package contains 100 single twists, several Single twist is combined into a big twist (also called group), the number of big twists in the small package (the number of groups> varies with the weight of each twist, as shown in Table 9-2, can be calculated by the following formula: z

One per small twist weight/gX per group of small twists, the main example of each small twist is 31. 25g. Each group of 5 small twists, calculate the number of groups per small package. Substituting the numbers into the above formula, we get:

(2) Middle package and large package: every 20 small packages is a middle package, the weight of the middle package = 20X 5=100kg. Each 100kg is a piece of yarn, and every 10 pieces of yarn weighs It. Every 40 small bags is a big bag, so the weight of the big bag=40X5kg=200kg.

Three, opener package into a package

The packages are packaged, and each package has a net weight of 50kg at a predetermined moisture regain. Two packages are one piece of yarn, and the weight of each package can be calculated as follows:

Seen weight = G + bag tare weight + empty tube weight

In the formula, G is the net weight (kg) of the actual moisture regain per package.

G=G' X~00+Actual moisture regain 100+Common moisture regain

In the formula, G'is the net weight (kg) of each package of bobbin at a predetermined moisture regain.