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Characteristic indicators and certification standards of non-woven fabrics
by：Sunshine
2021-04-07
1. The most basic characteristics of non-woven fabrics are: quantitative, thickness, uniformity, moisture regain
2. Non-woven fabric material performance test standard: ①International Standard Organization: ISO
②World Nonwovens Industry Association: INDA
③European Association of Disposable Materials and Nonwovens: EDANA
④American Society for Testing and Materials: ASTM
⑤EU CE certification
⑥U.S. FDA certification
3. Quantitative of non-woven fabric: it is usually said gram weight, it refers to the mass per unit area, the unit is gram per square meter (g/㎡).
4. Quantitative determination of non-woven fabrics: sampling, humidity control, weighing, calculation of mass per unit area and CV value of coefficient of variation.
5. The thickness of the non-woven fabric: the distance between the two surfaces of the fabric under the specified pressure.
6. Non-woven fabrics can be divided into thicknesses: ①Puffy non-woven fabrics: When the pressure of the non-woven fabric increases from 0.1KPa to 0.5KPa, the thickness of the non-woven fabric reaches or exceeds 20%. Spinning cloth.
②Ordinary non-woven fabrics: fabrics other than fluffy non-woven fabrics.
7. Nominal thickness: the thickness measured under a certain pressure.
8. Absolute compressibility: the difference between the measured thickness and the nominal thickness under the condition of 10 times the preload pressure.
9. Relative compressibility: the ratio of absolute compressibility to nominal thickness.
10. Bulk density: the ratio of the quantitative of the sample to the volume occupied by the sample under the condition of the nominal thickness.
2. Non-woven fabric material performance test standard: ①International Standard Organization: ISO
②World Nonwovens Industry Association: INDA
③European Association of Disposable Materials and Nonwovens: EDANA
④American Society for Testing and Materials: ASTM
⑤EU CE certification
⑥U.S. FDA certification
3. Quantitative of non-woven fabric: it is usually said gram weight, it refers to the mass per unit area, the unit is gram per square meter (g/㎡).
4. Quantitative determination of non-woven fabrics: sampling, humidity control, weighing, calculation of mass per unit area and CV value of coefficient of variation.
5. The thickness of the non-woven fabric: the distance between the two surfaces of the fabric under the specified pressure.
6. Non-woven fabrics can be divided into thicknesses: ①Puffy non-woven fabrics: When the pressure of the non-woven fabric increases from 0.1KPa to 0.5KPa, the thickness of the non-woven fabric reaches or exceeds 20%. Spinning cloth.
②Ordinary non-woven fabrics: fabrics other than fluffy non-woven fabrics.
7. Nominal thickness: the thickness measured under a certain pressure.
8. Absolute compressibility: the difference between the measured thickness and the nominal thickness under the condition of 10 times the preload pressure.
9. Relative compressibility: the ratio of absolute compressibility to nominal thickness.
10. Bulk density: the ratio of the quantitative of the sample to the volume occupied by the sample under the condition of the nominal thickness.
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