Non-woven fabric, also known as non-woven or non-woven fabric, refers to the cloth that does not need to be woven is relatively woven, compared to the traditional cloth is to go through the textile steps.

When calculating the gram weight and weight of non-woven fabrics, four units are commonly used: one is code, English code, abbreviated as Y; The second is meter, English meter, abbreviated as m, the third is gram, English gram, abbreviated as gram, and the fourth is millimeter, abbreviated as mm.

First, the length.

The code number and meter in the specification are all calculated in length, but it should be specially explained here. This concept is also commonly used to distinguish families and non-experts, because non-woven fabrics are rolled one by one, and the height of the length coil is called width, expressed in meters, and the common specifications are generally 2.40 meters, 1.60 meters and 3.2 meters.

2. weight and thickness

Since gram weight and thickness have length and width, is there a thickness unit? Yes, yes, the number of grams is used to calculate the thickness, grams, refers to the weight of the square gram, that is, g/m2, why not use millimeters? In fact, there are also millimeters, but they are less used. This is an industry rule. In fact, the square gram weight can be equivalent to the thickness of millimeters, because the gram weight of non-woven fabrics is between 10g/㎡ and 320g/㎡.

Hardness (feel)/gloss

At present, there are few non-woven fabric hardness instruments and equipment tests on the market, and they are generally tested by hand/gloss.

The stretching parameters of the non-woven fabric were 4.

5. formula: weight = weight * width * length

Non-woven fabrics have longitudinal and transverse stretching parameters. If they are irregularly stretched and pressed meltblown, the longitudinal and transverse stretching forces are not much different.