How to Find the Best PP Non Woven Fabric Supplier in China?

Requirement Dimension	What to Define Before Contacting a Supplier	Recommended Starting Specification	How to Verify the Requirement	Supplier Evaluation Notes
End Use	State the final product and its working environment, such as shopping bags, medical gowns, hygiene products, agriculture covers, furniture lining, or filtration media.	Specify one primary application and any secondary use conditions.	Provide product drawings, photographs, samples, or a written application description.	A supplier should recommend fabric properties based on the end use rather than quote only by weight.
Manufacturing Process	Identify whether spunbond, meltblown, spunbond-meltblown-spunbond (SMS), or a laminated structure is required.	Spunbond for strength and general-purpose products; meltblown for fine filtration; SMS for a combination of barrier and strength.	Request the production process description and a technical data sheet.	Different processes produce substantially different filtration, barrier, softness, and mechanical properties.
Raw Material	Define virgin or recycled polypropylene, homopolymer or copolymer, and whether additives are permitted.	Virgin polypropylene for applications requiring consistent strength, cleanliness, and appearance.	Request a raw-material declaration and, when necessary, third-party chemical or migration testing.	Confirm whether recycled content is allowed for the intended application and market.
Basis Weight	Set the target mass per unit area and acceptable tolerance.	Typical commercial ranges are approximately 10–30 g/m² for light spunbond, 40–100 g/m² for heavier spunbond, and 15–60 g/m² for many SMS structures.	Measure according to ISO 9073-1 or an agreed equivalent method.	A practical order specification should include a target value and a tolerance, for example 50 g/m² ±5%.
Fabric Width	Define finished width, usable width, edge trim, and whether slit rolls or folded rolls are required.	Specify the exact finished width in millimetres and an agreed width tolerance, commonly within ±1–2% depending on the product.	Check roll width at several points using a calibrated measuring tool.	The usable width may be smaller than the nominal roll width because of edge defects or trimming.
Roll Length and Core	Define roll length, outer diameter, core internal diameter, core material, and maximum roll weight.	Common roll lengths range from approximately 100 to 2,000 metres, depending on basis weight, width, and handling limits.	Measure roll length or use a calibrated length counter; inspect core dimensions and winding quality.	Roll weight and diameter should match the buyer’s converting and transportation equipment.
Tensile Strength	Set minimum machine-direction (MD) and cross-direction (CD) strength requirements.	For general spunbond, define separate MD and CD minimums; a starting requirement may be 30–100 N per 50 mm, depending on basis weight and construction.	Test using ISO 9073-3, ASTM D5035, or another mutually agreed standard.	Strength should be specified in both directions because web orientation can create a significant difference between MD and CD.
Elongation	Define the acceptable stretch before break and whether flexibility or dimensional stability is more important.	Typical spunbond elongation may range from about 20% to 100%, depending on process, basis weight, and test direction.	Use the same tensile test method and report MD and CD results separately.	High elongation can improve drape but may reduce dimensional stability during converting.
Tear Resistance	Set minimum resistance to propagation of a tear for bags, covers, packaging, or protective products.	Define a minimum value by direction after confirming the product design and basis weight.	Use ISO 9073-4, ASTM D5733, or an agreed equivalent method.	Tear performance should be evaluated together with tensile strength, seam design, and puncture resistance.
Air Permeability	Specify the required breathability or airflow rate, especially for hygiene, medical, agricultural, and filtration products.	Set a numerical airflow range rather than using only terms such as “breathable” or “high permeability.”	Test according to ISO 9237 or ASTM D737 at a defined pressure differential.	Results vary with test pressure, sample area, fabric structure, and instrument settings.
Water Resistance	Define whether the material must resist light spray, hydrostatic pressure, or liquid penetration.	For basic splash resistance, request a water-repellent finish; for barrier applications, set a hydrostatic pressure or liquid-barrier requirement.	Use AATCC 22 for spray rating or ISO 811 for hydrostatic pressure, as applicable.	A water-repellent surface finish is not automatically equivalent to a liquid-proof barrier.
Filtration Performance	Define particle size, test aerosol, filtration efficiency, pressure drop, and whether bacteria or particulate filtration is required.	For meltblown or SMS media, specify the target efficiency and pressure drop at a defined flow rate and test condition.	Request a complete test report with test method, airflow, particle size, sample conditioning, and results.	Do not compare filtration percentages from different test methods or test conditions without technical review.
Surface Finish	Define hydrophilic, hydrophobic, antistatic, flame-retardant, UV-stabilized, or antibacterial treatment requirements.	Use only treatments directly related to the product’s performance and regulatory needs.	Request finish details, durability data, and relevant chemical safety documentation.	Some finishes can affect softness, odor, recyclability, printability, or skin-contact suitability.
Color and Appearance	Specify color reference, opacity, uniformity, surface texture, pinholes, streaks, wrinkles, and acceptable defect frequency.	Use a physical color standard or a recognized color reference and define an inspection limit for visible defects.	Approve a pre-production sample and inspect production rolls under consistent lighting.	Color consistency can be affected by polymer additives, masterbatch concentration, production speed, and lot changes.
Softness and Hand Feel	Describe the required touch, drape, stiffness, and noise level during handling.	Approve a physical reference sample because softness is difficult to define using basis weight alone.	Compare conditioned samples using an agreed tactile or bending test where applicable.	Calendering, embossing, additives, fiber fineness, and basis weight all influence hand feel.
Sealing and Converting	Identify the required method, such as ultrasonic welding, heat sealing, sewing, adhesive lamination, or printing.	Provide the converting machine type, operating temperature, line speed, and sealing pattern.	Run a trial using production-intent fabric and measure seam strength and appearance.	Fabric optimized for one sealing process may not perform equally well with another process.
Printability	Define printing method, ink type, color count, adhesion, drying speed, and image quality.	Confirm whether the fabric requires corona treatment, coating, or a smoother surface.	Request a printed trial and perform adhesion, rub, and visual inspections.	Surface treatment can improve ink adhesion but may change surface energy and handling properties.
Chemical and Safety Compliance	List the destination market and any requirements for restricted substances, heavy metals, skin contact, food contact, or medical use.	Request a current declaration of conformity and test reports applicable to the destination market.	Verify test laboratory details, report dates, sample descriptions, and applicable regulations.	A general material safety sheet does not replace product-specific compliance testing.
Quality Control Plan	Define inspection stages, sampling method, critical defects, acceptable quality limits, and release documents.	Require checks for basis weight, width, roll length, appearance, tensile properties, and packaging condition.	Review a batch inspection report and compare it with an independently inspected sample when necessary.	Critical requirements should be written into the purchase specification before mass production.
Sample and Approval Process	Set sample quantity, sample size, test duration, approval criteria, and the process for handling deviations.	Approve a documented reference sample before placing a mass-production order.	Compare the production lot with the approved sample and agreed numerical specifications.	A retained reference sample helps resolve disputes involving color, feel, appearance, and roll construction.
Packaging and Storage	Define wrapping material, moisture protection, palletization, labels, batch coding, and storage conditions.	Use sealed protective packaging with clear lot, width, basis weight, length, and production-date identification.	Inspect packaging integrity and verify that labels match the purchase order and test documents.	Store polypropylene non-woven fabric in a clean, dry area away from excessive heat, sunlight, and contamination.