SMS non-woven catalog

SMS non-woven fabric What is SMS non-woven fabric
SMS (English: Spunbond + Meltblown + Spunbond Nonwovens)

Weight range: 30-500 g / square meter;

Basic width: 1500mm and 2400mm;

It is a composite non-woven fabric, which is a composite product of spunbond and meltblown.

The performance is non-toxic, tasteless and efficient. Through special treatment of equipment, it can achieve antistatic, alcohol, anti-plasma, water and water production.

use:

1, medical and health labor protection products such as surgical gowns, surgical caps, protective clothing, hand washing clothes, handbags, etc.
2, sanitation products such as filter non-woven fabric, oil absorbing cloth, rag
3, insulation materials and clothing accessories
4, anti-feather non-woven fabric for anti-down

SMS industry standard
1 Scope 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 nonwovens (hereinafter referred to as SMS).

This standard applies to 10g/m2—>80g/m2 polypropylene SMS products based on polypropylene.
2 Normative references The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For all references cited in the note period, all subsequent amendments (not including errata content) or revisions do not apply to this standard. However, parties to agreements based on this standard are encouraged to study whether they are available for use. version. The latest editions of the citing documents are not applicable to this standard.

GB/T 4744 textile fabric water resistance test, hydrostatic test
GB/T 5453 textiles, fabric permeability determination
Standard atmosphere for humidity control and test of GB/T 6529 textiles
Determination of the mass per unit area of ​​FZ/T 60003 nonwoven fabric
FZ/T 64004 thin bonding non-woven fabric
Determination of breaking strength and elongation at break of FZ/T 60005 nonwoven fabric
3 noun terms
The following terms established in GB/T3291.3 apply to this standard.
3.1 Hard block refers to the hard block caused by melt dripping.

3.2 stiff wire refers to the unstretched hard wire.

3.3 Turning the net refers to the phenomenon that the product is seriously uneven due to the foreign object being hanged before being reinforced.

3.4 Folding refers to the superposition of fiber webs together, after reinforcement, different from other places.

3.5 Holes with a hole area of ​​4mm2 or more, and no fiber in the middle are holes.

4 Technical requirements
4.1 Polypropylene chips (required for raw materials)

4.2 Physical properties The physical properties of the product shall comply with the requirements of Table 1.

Physical performance requirements per unit area mass 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: % ≤ ± 6%, ≤ ± 4%,
Unit value single value deviation % ≤ ± 12%
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
Transverse 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
Antistatic 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 the SMS product with transversely laid web for the spunbond layer, the breaking strength and elongation index are to be implemented in accordance with the contract or agreement between the supplier and the buyer.
4.3 Appearance quality
4.3.1 The cloth surface is even, flat, no obvious creases, broken edges and holes, oil stains, and the package is neat.
4.3.2 The width is as specified in the contract and agreement. The width deviation is specified in Table 2.

Width (mm) Width deviation (mm)
≤800 ±3
>800 -2-+5
4.3.3 Contamination: The product should be dry, clean, free of oil, insects, dust and metal powder.
4.3.4 hard block / stiff wire: 1000 meters no more than 10, each area does not exceed 4cm2, and no continuous hard block / stiff wire is allowed.
4.3.5 Micropores: Refers to holes in the surface of the product that resemble pinhole sizes. For products used for hygiene and medical purposes, micropores are not allowed.
4.3.6 Odor: No abnormal smell is allowed.
4.3.7 Hole/Tear/Cut: No holes/tears/cuts are allowed
4.3.8 Folding/folding: no more than 10 per kilometer less than 5cm wide; no more than one per kilometer wide than 5cm wide.
4.3.9 Wrinkles: Continuous wrinkles are not allowed.
4.4.10 Unreinforced area: No more than 5 connected pressure point defects are allowed.
4.4.11 Appearance of the cloth roll: It should be clean and tidy, without any bad edges and visible defects.
4.4.12 joints: diapers / sheets and sanitary napkins, the number of joints per cloth roll, no more than one per 1000 meters.

5 Test methods
5.1 Appearance inspection Under normal light, use a normal sensory test and measure with a ruler or steel ruler with an accuracy of 1 mm.
5.2. Inspection of physical properties
5.2.1 The mass per unit area is determined in accordance with FZ/T 60003-1991.
5.2.2 Determination of breaking strength and elongation is specified in FZ/T 60005-1991.
5.2.3 Determination of antistatic hydrostatic pressure according to GB/T 4744-1997.
5.2.4 Determination of air permeability According to the provisions of GB/T 5453-1997, select 20cm2 test head, set the pressure difference of 100Pa, select the measurement unit of l/m2/s.
5.2.5 Select one of the following methods to determine the width according to the contract or agreement.
5.2.5.1 Measure the width of the roll with a steel tape measure to the width of the roll, to the nearest 1 mm.
5.2.5.2 Unwinding the fabric to relax the fabric at least 5 m from the roll head, using a rigid tape measure to measure the width at least 5, to the nearest 1 mm. Calculate the average (retaining integer bits) as the width of the revolving volume.

6. Inspection rules
6.1 The quality, strength, elongation, hydrostatic pressure, air permeability and width of the square meter in the technical requirements of the inspection project shall be the factory inspection items. The product shall be inspected by the inspection department of the production factory and accompanied by the product certificate to be manufactured. .

6.2 In batches, each batch of products must be composed of the same ratio of raw materials, process conditions and specifications.

6.3 Sampling regulations Each batch of products shall be cut according to 7.3 of FZ/T64004-93. The length of the sample for physical properties shall be 3m from the head of the coil and cut and calibrated. Record the sampling period, production team and product specifications.

6.4 Evaluation of inspection results The minimum grade of the assessment items in the technical requirements shall be determined as the grade of the batch of products, the physical and mechanical properties shall be determined in batches, the appearance quality shall be in accordance with the volume assessment, etc., and the physical and mechanical performance test results do not meet the requirements, which may be doubled. Sampling samples, re-testing the project, and re-testing the final result as the basis for the decision.

6.5 Acceptance rules
6.5.1 According to the quality inspection, the manufacturer shall accept the acceptance within one month of delivery. If it is not accepted, it shall receive the goods 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 take samples from the batch of products at 10% of the delivery quantity, not less than 2 rolls. Each roll shall be tested according to the provisions of Chapter 6, and the average value of each test shall be The final result. The visual inspection shall be re-inspected from the batch of products at 20% of the delivery volume, not less than 5 rolls, and the roll-to-roll rewind test shall be carried out under the illumination of 400-600 LX. If the product rate exceeds 8%, then The batch of products is reduced by one level.

6.5.3 If there is any objection to the quality of the product, the arbitration inspection agency may be requested to conduct a re-inspection, and the re-inspection result shall be the final result, and the re-inspection fee shall be borne by the responsible party.

7 Packaging, marking, transportation and storage
7.1 The packaging material is made of plastic film or shrink film.

7.2 The label label should be filled out clearly and neatly. The content should include: manufacturer name, product name, implementation standard number, standard record number, production batch number, product specification (square meter weight, width, length and color, etc.), theory Roll weight, volume number, quality level mark; label color can be determined according to needs.

7.3 Transportation should be protected from light, water, moisture, pollution, damage, and extrusion. It is strictly forbidden to drop the cloth from a height.

7.4 Storage and storage should be placed in a ventilated, dry, dark, clean warehouse.

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