SMS non-woven fabric SMS non-woven fabric (English: Spunbond + Meltblown + Spunbond Nonwovens) is a composite non-woven fabric, which is a composite product of spunbond and meltblown. It has the advantages of high strength, good filtering performance, no adhesive, and non-toxic. Mainly used in medical and health labor protection products such as surgical gowns, surgical caps, protective clothing, hand washing clothes, handbags, etc. Chinese name:SMS non-woven fabric Foreign name:Spunbond + Meltblown + Spunbond Nonwovens Weight range锛?0-500 g/m虏 Basic width: Ranging from 150mm to 3200mm Definition What is SMS non-woven fabric SMS (銆€English is: Spunbond + Meltblown + Spunbond Nonwovens) It is a composite non-woven fabric, which is a composite product of spunbond and meltblown Performance It is non-toxic, tasteless, and efficient in separating bacteria. Through special treatment of equipment, it can achieve antistatic, anti-alcohol, anti-plasma, water repellent and water production performance. Features of non-woven fabrics: durable, disposable. Insulating and non-conductive. Softness and stiffness. Density and expansion. Isotropic, anisotropic. Filterability, breathable and impermeable. Elasticity and stiffness. Light, loose and warm. Thin as cicada wings, thick as felt. Waterproof and breathable. Ironing, sewing, and molding. Flame retardant and antistatic. Water-permeable, waterproof, abrasion-resistant and flocking. Wrinkle resistance, good elasticity, high moisture absorption and water repellency. 1. Lightweight: Polypropylene resin is used as the main raw material for production. The specific gravity is only 0.9, only three-fifths of cotton. It is fluffy and feels good. 2. Soft: It is composed of fine fibers (2-3D) and is formed by light-point hot-melt bonding. The finished product is moderately soft and comfortable. 3. Water-repellent and breathable: Polypropylene slices do not absorb water, have zero water content, and have good water-repellent properties. They are made of 100% fiber and are porous and air-permeable. It is easy to keep the cloth dry and easy to wash. 4. Non-toxic and non-irritating: The product is produced with FDA food-grade raw materials, does not contain other chemical components, has stable performance, is non-toxic, non-odor, and does not irritate the skin. 5. Antibacterial and anti-chemical agents: Polypropylene is a chemically blunt substance, not moth-eaten, and can isolate the corrosion of bacteria and insects in the liquid; antibacterial, alkali corrosion, and the strength of the finished product will not be affected by erosion. 6. Antibacterial property. The product is water-repellent, not moldy, and can isolate the erosion of bacteria and insects in the liquid, and is not moldy. 7. Good physical properties. It is made of polypropylene spun yarn directly spread into a net and thermally bonded. The strength of the product is better than that of ordinary staple fiber products. The strength is non-directional, and the strength is similar in the vertical and horizontal directions. Use (1) Medical and health cloths: surgical gowns, protective clothing, disinfection wraps, masks, diapers, sanitary napkins, etc.; (2) Home decoration cloth: wall cloth, table cloth, bed sheet, bedspread, etc.; (3) Follow-up cloth: lining, fusible lining, wadding, shaped cotton, various synthetic leather base cloth, etc.; (4) Industrial cloth: filter material, insulating material, cement packaging bag, geotextile, covering cloth, etc.; (5) Agricultural cloth: crop protection cloth, seedling raising cloth, irrigation cloth, thermal insulation curtain, etc.; (6) Environmental protection materials: sanitation products such as filter non-woven fabrics, oil-absorbing cloth, etc. (7) Insulation cloth: insulation materials and clothing accessories (8) Anti-feathering non-woven fabric for down running (9) Others: space cotton, thermal insulation materials, etc. Industry Standard Range This standard specifies the product classification, technical requirements, test methods, acceptance rules, packaging and marking requirements, transportation and storage of polypropylene spunbond/meltblown/spunbond composite nonwoven fabrics (hereinafter referred to as SMS). This standard applies to polypropylene SMS products of 10g/m2鈥?gt;80g/m2 with polypropylene as the main raw material Normative references The clauses in the following documents become clauses of this standard after being quoted in this standard. For dated reference documents, all subsequent amendments (excluding errata content) or revisions do not apply to this standard. However, all parties who have reached an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used . For undated references, the latest version is applicable to this standard. GB/T 4744 Determination of water permeability of textile fabrics, hydrostatic pressure test GB/T 5453 Textiles, determination of fabric breathability GB/T 6529 Standard atmosphere for humidity control and testing of textiles FZ/T 60003 Determination of the mass per unit area of non-woven fabrics FZ/T 64004 Thin bonding non-woven fabric Determination of breaking strength and breaking elongation of FZ/T 60005 non-woven fabric Noun term The terms established in GB/T3291.3 and the following are applicable to this standard 3.1 Hard block Refers to lumps caused by melt dripping. 3.2 Stiff wire Refers to the undrawn hard wire. 3.3 Turn over the net It refers to the phenomenon that the fiber web is severely uneven due to the hanging of foreign objects before the product is not reinforced. 3.4 Folding It refers to the superposition phenomenon of fiber webs superimposed together, after reinforcement, different from other places. 3.5 Hole Holes with an area of 4mm2 or more, without fibers in the middle are holes. Skills requirement 4.1 Polypropylene chips (whether raw materials are required) 4.2 Physical properties The physical properties of the product should meet the requirements of Table 1 Table 1 Physical performance requirements Mass per unit area g/m2 11-13 >13-17 >17-21 >21-25 >25-30 >30-35 >35-40 >40-50 >50-60 >60-70 >70-80> 80 Mass deviation rate per unit area:% 鈮ぢ?%, 鈮ぢ?%, Single value deviation per unit area% 鈮ぢ?2% Longitudinal breaking strength N/5cm >18 >23 >28 >35 >40 >50 >54 >67 >81 >90 >100 >108 Longitudinal elongation at break% >30 >30 >30 >30 >30 >30 >30 >30 >30 >30 >30 >30 Lateral breaking strength N/5cm >9 >11 >14 >18 >22 >28 >32 >38 >45 >55 >60 >65 Transverse elongation at break% >30 >30 >30 >30 >30 >30 >30 >30 >30 >30 >30 >30 Resistance to hydrostatic pressure mmH2O >80 >110 >130 >150 >200 >220 >250 >280 >300 >300 >300 >300 Air permeability l/m2/s >1100 >900 >800 >700 >600 >400 >250 >200 >150 >125 >125 >100 Note: For SMS products with horizontal spreading of the spunbond layer, the breaking strength and elongation indicators shall be implemented in accordance with the contract or agreement between the supplier and the demander. 4.3 Appearance quality 4.3.1 The cloth surface is even, smooth, without obvious creases, broken edges, holes, oil stains, and neatly packaged. 4.3.2 The width is in accordance with the contract and agreement. The width deviation is specified in Table 2. Table 2 Width (mm) Width deviation (mm) 鈮?00 卤3 >800 锛?锛?5 4.3.3 Pollution: The product should be dry, clean, free of oil, insect, dust, metal powder and other pollution. 4.3.4 Hard blocks/stiff wires: no more than 10 pieces per 1000 meters, each area does not exceed 4cm2, and continuous hard blocks/stiff wires are not allowed. 4.3.5 Microporous: Refers to the pinhole-sized hole on the surface of the product. For sanitary and medical products, microporous is not allowed. 4.3.6 Odor: No abnormal smell is allowed. 4.3.7 Hole/tear/cut: No hole/tear/cut is allowed 4.3.8 Turning/folding: no more than 10 per kilometer for the width of less than 5cm; no more than 1 per kilometer for the width of more than 5cm. 4.3.9 Wrinkles: Continuous dead wrinkles are not allowed. 4.4.10 Unreinforced area: It is not allowed to have more than 5 connected pressure point defects. 4.4.11 The appearance of the cloth roll: It should be clean, neat, without rotten edges and visible defects. 4.4.12 Joints: For diapers/sheets and women's sanitary napkins, the number of joints per cloth roll is not allowed to exceed 1 per 1000 meters. Experiment method 5.1 Appearance inspection Under sufficient light, use normal sensory inspection and measure with a straightedge or steel ruler with an accuracy of 1mm. 5.2. Physical performance inspection 5.2.1 The measurement of mass per unit area shall be in accordance with FZ/T 60003-1991. 5.2.2The measurement of anti-static water pressure shall be in accordance with the provisions of GB/T 4744-1997. 5.2.3The air permeability is measured according to GB/T 5453-1997, a 20cm2 test head is selected, a pressure difference of 100Pa is set, and the unit of measurement is l/m2/s. 5.2.4The determination of breaking strength and elongation shall be in accordance with FZ/T 60005-1991. 5.2.5 Select one of the following methods to determine the width according to the contract or agreement. 5.2.5.1 Use a steel tape to measure the width of the roll to be the width of the roll, accurate to 1mm, 5.2.5.2 Unwinding to relax the fabric. At least 5m away from the winding head, measure the width of at least 5 places with a rigid tape, accurate to 1mm. Calculate the average value (reserve integer digits) and use it as the width of the roll. Testing regulations 6.1 Inspection items The square meter quality, strength, elongation, hydrostatic pressure, air permeability, and width in the technical requirements are the factory inspection items. Products should be inspected by the inspection department of the manufacturer and accompanied by a product certificate before leaving the factory. 6.2 Batch regulations Each batch of products must be a continuous production product with the same raw material ratio, process conditions and specifications. 6.3 Evaluation of inspection results The lowest level of the evaluation items in the technical requirements is determined as the level of the batch of products. The physical and mechanical properties are determined by the batch, and the appearance The quality is graded according to the paper. If the physical and mechanical performance test results do not meet the requirements, the sample samples can be doubled and the project will be retested. The final result of the retest is the basis for judgment. 6.4 Sampling regulations For each batch of products, according to the provisions of FZ/T64004-93 in 7.3, the sample length 3m for physical properties is taken and the direction is calibrated, and the sampling date, production team and product specifications are recorded. 6.5 Acceptance rules 6.5.1 According to the quality inspection by the manufacturer, within 1 month of delivery, the receiver shall carry out the acceptance inspection. If the acceptance is not accepted, the delivery shall be received according to the inspection result of the delivery party. 6.5.2 At the time of acceptance, the physical and mechanical performance test shall randomly sample samples from the batch at 10% of the delivery volume, and no less than 2 rolls. Each roll shall be tested in accordance with the provisions of Chapter 6, and the average value of each roll shall be taken as Final result. Appearance inspection shall be re-inspected at 20% of the delivery volume from the batch of products, and shall not be less than 5 rolls. Under 400-600LX illumination, roll-to-roll inspection shall be carried out. If the non-conforming product rate exceeds 8%, then This batch of products is reduced by one grade accordingly. 6.5.3 If there is any objection to the quality of the product, it may be submitted to the arbitration inspection agency for re-inspection, and the re-inspection result shall be the final result, and the responsible party shall bear the cost of the re-inspection. Packaging, marking, transportation and storage 7.1 Packaging The packaging material uses plastic film or shrink film. 7.2 Label The label should be filled in clearly and neatly, and the content should include: manufacturer鈥檚 name, product name, executive standard number, label registration number, production batch number, product specifications (square meter weight, width, roll length, color, etc.), theoretical roll weight , Volume number, quality grade mark; label color can be determined according to needs. 7.3 Transportation It should be protected from light, water, moisture, pollution, breakage, and extrusion. It is strictly forbidden to drop the cloth roll from a high place. 7.4 Storage Store in a ventilated, dry, dark and clean warehouse. Special treatment Various special treatments are performed on non-woven fabrics to meet customer requirements for various special properties of non-woven fabrics. The treated non-woven fabric has anti-alcohol, anti-blood and oil-resistant functions, and is mainly used in medical surgical gowns and surgical drapes. Antistatic treatment: Antistatic non-woven fabrics are mainly used as materials for protective equipment that have special environmental requirements for static electricity. Antibacterial deodorization and photocatalyst effect treatment: This type of non-woven fabric is mainly used in the field of household products. Absorbent treatment: Absorbent non-woven fabrics are mainly used in the production of medical consumables, such as surgical drapes, surgical pads, etc. Anti-ultraviolet treatment: Anti-ultraviolet, anti-aging non-woven fabrics are mainly used in agricultural covering fabrics, car covers and other fabrics where sun protection and anti-aging effects are required. Flame-retardant treatment: Flame-retardant non-woven fabrics are widely used in furniture products and aviation products. Fragrance treatment: Fragrance non-woven fabric is used in hygiene products (mint, lemon, lavender, etc.).Non Woven Fabric for sale website:http://www.geotechnicalmaterial.com/non-woven-fabric/