Uncover the test results of four types of spunlace non-woven fabrics
Spunlace non-woven fabrics are also spunlace non-woven fabrics. In my country, spunlace non-woven fabrics are mainly used in medical and sanitary products, light industry production, electronics industry, environmental protection and other fields. Development plays a positive role in promoting. Spunlace non-woven fabrics are important raw materials for medical masks, medical protective clothing, medical dressing gauze, surgical gowns, and artificial leather base fabrics. In the current shortage of medical supplies, how to grasp the quality of spunlace non-woven fabrics through testing has become a concern of relevant manufacturers.
1. Composite spunlace non-woven fabric testing
The composite spunlace nonwoven fabric can be tested according to the regulations in GB/T 26379-2011 "Textile Wood Pulp Composite Spunlace Nonwoven Fabric". GB/T 26379-2011 divides composite spunlace non-woven fabrics into ordinary and functional composite spunlace non-woven fabrics. Among them, the functional performance composite spunlace non-woven fabric is mainly used for the composite spunlace non-woven fabric for special purposes such as water repellency and flame retardant. The external quality test items of the two composite spunlace non-woven fabrics are the same, but the internal quality test items are slightly different. The specific requirements are as follows:
1). Ordinary composite spunlace non-woven fabrics internal quality inspection items: mass deviation rate per unit area, mass unevenness per unit area, transverse breaking strength, absorption capacity, color fastness to rubbing, width deviation
2). Functional composite spunlace non-woven fabric intrinsic quality testing items: mass deviation rate per unit area, mass unevenness per unit area, transverse breaking strength, color fastness to rubbing, width deviation, water seepage resistance, water wettability, Alcohol resistance, flame retardant performance
3). External quality inspection items of composite spunlace non-woven fabrics: linear defects, poor trimming and burring, poor curling, printing and dyeing defects, splicing times, stains, stains, impurities, broken defects, delamination, insect marks, etc.
2. Sanitary Spunlace Non-woven Fabric Testing
Sanitary spunlace nonwovens can be tested according to the regulations in FZ/T 64012-2013 "Sanitary Spunlaced Nonwovens". FZ/T 64012-2013 divides sanitary spunlace non-woven fabric testing items into three categories: internal quality testing, external quality testing, and microbiological index testing. The specific reference testing items are as follows:
1). Intrinsic 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 inspection items: fabric quality defects, color difference, blemishes, etc.
3). Microbiological index test items: total number of bacterial colonies, coliforms, Staphylococcus aureus, pathogenic pyogenic bacteria, etc.
3, insulation spunlace non-woven fabric inspection
Insulating spunlace nonwovens can be tested in accordance with the regulations in FZ/T 64065-2017 "Aramid Spunlaced Nonwovens for Insulation". Insulating spunlace non-woven fabrics only need to test two items of internal quality and external quality. Specific requirements are as follows:
1). Intrinsic quality testing items:: mass deviation rate per unit area, thickness deviation, width deviation, limiting oxygen index, continuous burning time, smoldering time, damage length, electrical strength, breaking strength, breaking elongation, tearing strength , Relative permittivity, dielectric loss factor, thermal shrinkage rate
2). External quality inspection items: the cloth surface is even and smooth, without obvious creases, no edges, holes, oil stains, stains, etc., and the package should be neat
4. Chitosan fiber spunlace non-woven fabric detection
Chitosan fiber spunlace nonwoven fabric can be tested according to the regulations in FZ/T 64077.2-2019 "Chitosan Fiber Nonwoven Fabric Part 2: Spunlace Nonwoven Fabric". The testing items of chitosan fiber spunlace non-woven fabrics are basically similar to sanitary spunlace non-woven fabrics, and are also divided into three items: internal quality, external quality, and microorganisms. Specific requirements are as follows:
1). Intrinsic quality testing items:: mass deviation rate per unit area, width deviation, vertical and horizontal breaking strength, chitosan fiber content deviation rate, pH value, formaldehyde content, migratory fluorescent substance, liquid absorption, antibacterial rate , Heavy metal content (lead, mercury, arsenic)
2). External quality inspection items: cloth surface, joint, slitting end surface
3). Microbiological index test items: total bacterial colony, coliform, total fungal colony, pathogenic pyogenic bacteria, etc.
The above is the four kinds of spunlace nonwoven testing knowledge we have summarized. Spunlace non-woven fabric testing also includes a variety of non-woven fabrics such as anti-sticking spunlace composite non-woven fabric testing, wet-method spunlace composite non-woven fabric testing and so on. By testing the quality of spunlace non-woven fabrics, we can guide us to improve the production process, choose better materials, and produce the products we need.
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