Spunlace non-woven fabric are important raw materials for medical masks, medical protection clothes, medical dressing gauze, surgery, and artificial leather cloth. At the moment of the shortage of medical supplies, how to grasp the quality of Spunlace non-woven fabric by testing has become a matter of concern for related manufacturers. The following four water test -notes are for reference.
One. Composite Spunlace Non-woven fabric test Detection
The composite Spunlace Non-woven fabric,can be tested according to the provisions of the GB/T 26379-2011 "Textile Wood Purch composite spunlace Non -woven fabrics". GB/T 26379-2011 divides the composite spunlace Non -woven fabrics into ordinary and functional composite spunlace Non -woven fabrics.
Among them, the functional composite spunlace Non -woven fabrics, which is mainly used for special uses such as water refusal and flame retardant. The external quality testing items of the two composite spunlace Non -woven fabrics are the same, but the internal quality testing items are slightly different. The specific requirements are as follows:
1. Internal quality testing items in ordinary composite spunlace Non -woven fabrics: unit area quality deviation rate, unevenness of unit area quality, strong horizontal fracture, absorption, friction -resistant color fastness, width deviation of width deviation.
2. Internal quality inspection items of functional composite spunlace non-woven fabrics: unit area quality deviation rate, unit area quality unevenness rate, transverse breaking strength, color fastness to friction, width deviation, water seepage resistance, water stain resistance, alcohol resistance, flame retardancy
3. External quality inspection items of composite spunlace non-woven fabrics: linear defects, poor cutting and cutting edges, poor curling, printing and dyeing defects, number of splicing, stains, color spots, impurities, damage defects, delamination, insect tracks, etc.
Two.Testing of spunlace nonwovens for hygiene
Spunlace nonwovens for hygiene can be tested according to the provisions of FZ/T 64012-2013 "Spunlace nonwovens for hygiene". FZ/T 64012-2013 divides the testing items of spunlace nonwovens for hygiene into three categories: internal quality testing, external quality testing, and microbial index testing. The specific reference testing items are as follows:
1. Internal quality testing items: unit area quality deviation rate, unit area quality variation coefficient, thickness deviation, breaking strength, width deviation, liquid absorption, pH value
2. External quality testing items: fabric quality defects, color difference, flaws, etc.
3. Microbial index testing items: total bacterial colony count, coliform group, Staphylococcus aureus, pathogenic pyogenic bacteria, etc.
Three.Testing of Insulating Spunlace Nonwovens
Insulating spunlace nonwovens can be tested according to the provisions of FZ/T 64065-2017 "Insulating Aramid Spunlace Nonwovens". Insulating spunlace nonwovens only need to test two items: internal quality and external quality. The specific requirements are as follows:
1. Internal quality testing items: unit area quality deviation rate, thickness deviation, width deviation, limiting oxygen index, afterburning time, smoldering time, damaged length, electrical strength, breaking strength, breaking elongation, tearing strength, relative dielectric constant, dielectric loss factor, thermal shrinkage
2. External quality testing items: the cloth surface is uniform and flat, without obvious creases, broken edges, holes, oil stains, stains, etc., and the rolls should be neat
Four.Chitosan fiber spunlace nonwoven fabric testing
Chitosan fiber spunlace nonwoven fabric can be tested according to the provisions of FZ/T 64077.2-2019 "Chitosan fiber nonwoven fabric Part 2: Spunlace nonwoven fabric". The testing items of chitosan fiber spunlace nonwoven fabric are basically similar to those of sanitary spunlace nonwoven fabric, and are also divided into three items: internal quality, external quality, and microorganisms. The specific requirements are as follows:
1. Internal quality testing items: unit area quality deviation rate, width deviation, longitudinal and transverse breaking strength, chitosan fiber content deviation rate, pH value, formaldehyde content, transferable performance fluorescent substance, liquid absorption, antibacterial rate, heavy metal content (lead, mercury, arsenic)
2. External quality testing items: cloth surface, joints, cutting end faces
3. Microbial index testing items: total bacterial colony count, coliform group, total fungal colony count, pathogenic pyogenic bacteria, etc.
The above is the summary of four types of spunlace nonwoven fabric testing knowledge. Spunlace nonwoven fabric testing also includes spunbond spunlace composite nonwoven fabric testing, wet spunlace composite nonwoven fabric testing and other processes. By testing the quality of spunlace nonwoven fabrics, we can guide better improvement of production processes, select better quality materials, and produce products that meet market demand.