Standard for testing spunlaced non-woven fabrics| JINHAOCHENG

What is the detection standard of Spunlace Nonwoven Fabric? Today by the nonwoven factory to give you a brief explanation.

Spunlaced nonwovens in China it is mainly used in medical and sanitary products, light industrial production, electronic industry, environmental protection and other fields, to China's traditional chemical fiber, differentiated fiber development has played a positive role in promoting.

Spunlaced non-woven fabric is an important raw material for medical mask, medical protective clothing, medical gauze, surgical clothing and artificial leather base cloth. Related production enterprises are concerned about how to control the quality of spunlaced non-woven fabric through testing.

The following four spunlaced non-woven detection methods for reference

Compound spunlaced non-woven fabrics can be inspected in accordance with the provisions of GB/T26379-2011 "Textile Wood Pulp Composite Spunlaced nonwovens". GB/T26379-2011 composite spunbonded non-woven fabrics are divided into general spunbonded fabrics and functional composite non-woven fabrics.

Among them, the functional compound spunlaced non-woven fabric, mainly used in waterproof, flame retardant and other special purposes. Spunlaced method and spunlaced non-woven fabric external quality inspection items are the same, but the internal quality inspection items are slightly different, the specific requirements are as follows:

1. ordinary composite spunthorn non-woven internal quality detection items:

quality deviation rate per unit area, quality irregularity rate per unit area, transverse fracture strength, absorption, color fastness to friction, width deviation;

2. functional composite spunlaced non-woven internal quality testing items:

quality deviation rate per unit area, quality irregularity rate per unit area, transverse fracture strength, color fastness to friction, width deviation, anti-seepage performance, water adhesion performance, alcohol resistance, flame retardant performance;

3. Composite spunlaced non-woven fabric external quality inspection items:

linear defects, bad edge cutting and exclusion, bad edge rolling, printing and dyeing defects, stitching times, stains, color spots, impurities, damaged defects, layering, insect stains, etc.

Chitosan fiber spunlaced non-wovens can be tested in accordance with the provisions of "Chitosan fiber Nonwovens - Part 2: Spunlaced Nonwovens" FZ/T 640772-2019. Chitosan fiber spunlaced non-woven testing items and health spunlaced non-woven basic similar, also divided into internal quality, external quality, microbial three items. Specific requirements are as follows:

1. Internal quality testing items:

mass deviation rate per unit area, width deviation, longitudinal and transverse fracture strength, content deviation rate of chitosan fiber, pH value, formaldehyde content, fluorescence with transferable performance, liquid absorption, bacteriostatic rate, heavy metal content (lead, mercury, arsenic);

2. External quality inspection items:

cloth surface, joint, cutting end face;

3. microbial index detection items:

total number of bacterial colonies, coliforms, fungal colonies, pathogenic pyogenic bacteria, etc.

Sanitary spunlaced nonwovens can be tested in accordance with the provisions of SANITARY Spunlaced Nonwovens FZ/T 64012-2013. FZ/T 64012-2013 divides sanitary spunge non-woven fabric inspection items into three categories: internal quality inspection, external quality inspection and microbial index inspection. The specific reference inspection items are as follows:

1. Internal quality testing items:

mass deviation rate per unit area, mass variation coefficient per unit area, thickness deviation, breaking strength, width deviation, liquid absorption, pH value;

2. external quality testing items:

cloth quality defects, color difference, defects, etc.;

3. Microbial index detection items:

total number of bacterial colonies, coliforms, Staphylococcus aureus, pathogenic pyogenic bacteria, etc.

Insulation spunlaced non-woven fabrics can be tested in accordance with the provisions of FZ/T 64065-2017 "Aron Spunlaced Nonwovens for Insulation". Insulation spunlaced non-woven only need to detect the internal quality and external quality of the two items can be. Specific requirements are as follows:

1. Internal quality testing items:

mass deviation rate per unit area, thickness deviation, width deviation, limit oxygen index, continued burning time, smoldering time, damage length, electrical strength, breaking strength, breaking elongation, tearing strength, relative dielectric constant, dielectric loss factor, thermal shrinkage rate;

2. external quality testing items:

uniform, flat cloth, no obvious creases, no broken edges, holes, oil, spots and other phenomena, roll to tidy

The above is spunlaced non-woven fabric related introduction, if you want to know more information about non-woven fabric, welcome to contact our nonwoven fabric factory.