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PP spunbond nonwoven fabric is a noteworthy option when searching for industrial packaging or daily consumable materials. Its production process uses continuous filament hot rolling to form, giving the material good tensile strength and wear resistance. Compared to traditional textiles, this durable non-woven fabric material does not require weaving steps, resulting in a shorter production cycle and more controllable costs. The issue of fracture strength that many customers are concerned about is relatively stable on polypropylene spunbond nonwoven fabric. The filament structure ensures a relatively balanced tear strength in both the transverse and longitudinal directions, making it less prone to damage caused by stress concentration. Common applications include hospital isolation gowns, agricultural coverings, cement packaging bags, and shopping bags. Taking cement bags as an example, using high weight spunbond non-woven fabric as the reinforcement layer can reduce the risk of package breakage during transportation, while retaining a certain degree of breathability to prevent moisture and clumping. Customized eco-friendly non-woven fabrics are also becoming a trend. Some factories provide PP spunbond non-woven fabrics that support the addition of anti-static, flame-retardant, or UV resistant masterbatch to meet the needs of different scenarios. In addition, this material can be recycled and reused, crushed and re granulated to reduce the pressure of waste disposal. When purchasing, attention can be paid to whether the raw materials are produced from new materials. The polypropylene spunbond non-woven fabric made of brand new polypropylene particles has a more uniform surface, less odor, and no pinholes or thin spots. In terms of storage, it is recommended to store in a cool and dry place to avoid prolonged exposure to ultraviolet radiation. Although some products have added anti UV additives, the basic materials may still accelerate aging due to strong light. Overall, PP spunbond nonwoven fabric has achieved a good balance between strength, cost control, and environmental friendliness. Whether it is industrial protection or daily storage, choosing durable non-woven fabric materials with appropriate weight and formula can meet the requirements of long-term use.

In the field of modern materials, PP spunbond nonwoven fabric has become an indispensable basic material in industrial packaging, medical and health care, and agricultural protection due to its stable physical properties and wide applicability. This type of material is directly made through spinning into a mesh process, eliminating the traditional weaving yarn interlacing step. While maintaining high strength, it also balances good breathability and uniformity. From the perspective of material classification, PP spunbonded nonwoven fabric has the characteristics of acid and alkali resistance and anti-aging, and is commonly used in the production of environmental bags, the base of building waterproof coiled materials and the protective layer of sofas. Its lightweight characteristics can effectively reduce transportation costs and are easy to recycle and reuse, which is in line with the current trend of green production. Polyester spunbond non-woven fabric excels in high temperature resistance and dimensional stability, making it suitable as a filter material, cable wrapping layer, or support layer for automotive interiors. In practical applications, the selection of PP nonwoven fabric materials needs to be judged based on specific needs. For example, medical protective equipment has clear requirements for bacterial barrier efficiency, while the agricultural coverage field pays more attention to the balance between moisture permeability and UV resistance. By adjusting fiber fineness, hot rolling temperature, and rolling point shape, manufacturers can customize products with different weights, thicknesses, and surface textures to meet diverse needs from disposable consumables to long-term use parts. With the iteration of process technology, the production energy consumption of PP spunbond nonwoven fabric has gradually decreased, and functional products such as antibacterial, anti-static, water repellent and other sub categories continue to emerge. This type of material not only replaces some traditional plastic products, but also expands into more high-value application scenarios through composite technology combined with meltblown fabrics, breathable films, etc. For the purchaser, paying attention to key indicators such as uniformity, elongation at break, and unit area mass deviation of PP non-woven fabric materials can help ensure the stability of finished product quality. By optimizing parameters such as spinning temperature, cooling conditions, and mesh laying speed, production enterprises can maintain consistency in product performance while increasing production capacity. From the perspective of the industrial chain, the development of PP spunbond nonwoven fabric as a basic industrial material has always been closely related to environmental policy guidance and terminal consumption upgrading. Continuous investment in research and development of biodegradable materials, as well as increasing the proportion of recycled materials added, is becoming an important direction for promoting industry progress.

Meta Description:Looking for a strong, lightweight, and eco-conscious material for bag production? Discover why PP spunbond nonwoven fabric is the preferred choice for manufacturers worldwide.   Introduction Not all nonwoven fabrics are created equal. If you produce reusable shopping bags, promotional totes, or protective packaging, the material you choose directly affects your product’s durability, printability, and cost. That’s where PP spunbond nonwoven fabric stands out. It’s not just affordable — it’s engineered for performance. What Exactly is PP Spunbond Nonwoven?Polypropylene (PP) spunbond nonwoven is made by extruding melted polymer into continuous filaments, which are then laid into a web and bonded by heat and pressure — no weaving, no yarns. This unique process gives the fabric its signature strength and uniformity.   Key Benefits for Bag Making   1. High Tear Strength at Low GSMWith just 40–80 gsm, PP spunbond nonwoven delivers excellent tear and tensile strength. This means you can produce lightweight bags that still carry heavy loads — saving material costs without compromising quality. 2. Smooth Surface for PrintingUnlike many other nonwovens, spunbond has a smooth, even surface that accepts flexographic and screen printing beautifully. Your brand logos and messages stay sharp and vibrant. 3. Water-Resistant & ReusablePP spunbond is naturally water-resistant, making it ideal for grocery bags, beach totes, and outdoor event bags. And unlike plastic film, it’s reusable and recyclable. 4. Cost-Effective ProductionBecause it’s manufactured in a continuous process, PP spunbond is highly consistent and available in large rolls — reducing waste and speeding up cutting and sewing operations.   Eco-Friendly Without Compromise Many buyers assume “eco-friendly” means weaker or more expensive. Not here. PP spunbond nonwoven is: New Virgin Polypropylene (can be reprocessed into new nonwoven rolls) Lightweight → lower shipping carbon footprint Non-toxic and safe for direct contact with goods   What to Look For in a Supplier   When sourcing PP spunbond nonwoven for bag production, consider:       Feature Why It Matters Uniform fiber distribution Prevents weak spots Consistent width and roll length Reduces production downtime Custom color matching Strengthens brand identity Anti-UV treatment (optional) For outdoor or long-term use   At Henghua Nonwoven , we deliver all of the above — plus third-party testing reports available upon request.   Final Thoughts If you’re still using conventional woven polypropylene or lower-grade nonwovens for bag making, it’s time to switch. PP spunbond nonwoven offers the ideal balance of strength, printability, recyclability, and cost.

Polypropylene spunbond nonwoven fabric is widely used in various fields due to its advantages of light weight, high strength, chemical corrosion resistance, good breathability, and low cost 1、 Medical and health field Disposable medical supplies such as surgical gowns, isolation gowns, protective clothing, etc Medical consumables such as masks, hats, shoe covers, etc Medical bed sheets, surgical bed sheets, etc 2、 Personal care products Surface and guide layer of baby diapers and adult care products Raw materials for sanitary napkins and wet wipes 3、 In the field of agriculture Thermal insulation covering material, used for frost and cold prevention of crops Nursery bed soil cloth to maintain soil moisture Orchard bird and insect prevention nets, etc 4、 Industrial applications Air filtration, liquid filtration materials Soundproofing and insulation materials Geotextile, used for reinforcing and anti-seepage of roads and bridges 5、 Packaging and Home Furnishings Environmentally friendly packaging materials such as shopping bags and storage bags Furniture packaging dust cover Wallpaper substrate, carpet backing 6、 Automotive industry Automotive interior, ceiling fabric, soundproof cotton substrate Seat cover and foot pad base Additional explanation: The production process of polypropylene spunbond non-woven fabric is mature, with high production efficiency and recyclability, making it a new type of material that combines functionality and environmental friendliness. With the advancement of technology, its application fields are constantly expanding.

The core reason for the occurrence of cracks in PP spunbond nonwoven fabric during production is uneven material shrinkage or excessive internal stress, which requires systematic adjustment from three aspects: raw materials, processes, and molds. 1、 Adjustment of raw material issues 1. High moisture content of raw materials: PP material has strong water absorption and needs to be dried at 80-100 ℃ for 2-4 hours before use to reduce the moisture content to below 0.05%. 2. High proportion of raw material recycling: After multiple processing, the molecular chains of the recycled material break and the strength decreases. It is recommended that the proportion of new materials should not be less than 70%, and important structural components should use 100% new materials. 3. Mismatch of raw material grades: High flow grades (such as MFR>30) have greater molding shrinkage and are prone to stress. The medium low flow grade (MFR 10-25) should be selected based on the product wall thickness. 2、 Adjustment of Injection Molding Process Parameters 1. Melt temperature: If the temperature is too low, plasticization will be poor, and if it is too high, degradation will occur. PP material is generally controlled at 200-240 ℃, and the optimal value can be determined through mold flow analysis. 2. Injection speed: If the speed is too fast, it will cause shear overheating, and if it is too slow, the temperature of the melt front will be too low. It is recommended to use slow fast slow multi-stage injection and reduce the filling speed at the end. 3. Holding pressure and time: Insufficient holding pressure can cause shrinkage and depression, while excessive holding pressure can generate internal stress. The holding pressure is generally 60-80% of the injection pressure, and the time increases with wall thickness (usually 10-30 seconds). 4. Cooling time: Crystallization of PP material takes time, and insufficient cooling can lead to deformation. The cooling time can be estimated at 1.5-2.5 times the wall thickness (unit: seconds/millimeter). 5. Mold temperature control: If the mold temperature is too low (80 ℃), the cycle will be extended. Suggest setting the mold temperature between 50-80 ℃. 3、 Mold structure improvement 1. Gate design: Small gates will increase shear stress. It is recommended to increase the gate size or use fan-shaped/recessed gates instead. 2. Cooling system: Check if the water circuit is blocked, ensure even mold temperature (temperature difference<5 ℃), and strengthen cooling especially in areas with sudden changes in adhesive thickness. 3. Demoulding system: Improper positioning or insufficient inclination of the ejector pin can cause ejector stress, increasing the demoulding inclination (recommended 1-1.5 ° for PP materials) and the number of ejector pins. 4. Exhaust design: Trapped air can cause burning and insufficient filling. Install an exhaust groove (depth 0.02-0.03mm) at the end of the melt. 4、 Product design optimization 1. Uniform wall thickness: Stress concentration is prone to occur at sudden changes in wall thickness. It is recommended that the variation in adhesive thickness should not exceed 1:1.5. 2. Rounded corner design: All sharp corners should be changed to rounded corners, and it is recommended that the inner rounded corner radius be ≥ 0.5 times the wall thickness. Suggestion for adjusting the order: First confirm the dryness and grade of the raw materials, then optimize the injection molding process parameters (especially pressure holding and cooling), and finally check the mold and product structure.

When you think of medical textiles, your mind might go to cotton gauze or surgical steel. But walk through any hospital today, and you will be surrounded by a material you likely cannot see clearly—spunbond nonwoven fabric, specifically made from polypropylene (PP).   From the moment you enter an operating room to the disposal of a single-use gown, spunbond fabric is quietly performing critical tasks that woven textiles simply cannot match. But why has this material become the gold standard for medical and hygiene applications? Let's explore.     The Healthcare Challenge: Safety vs. Cost Healthcare providers face a unique dilemma. They need materials that are sterile, protective, and disposable, yet also cost-effective and environmentally conscious (through efficient incineration or recycling). Traditional woven cotton fails here—it absorbs fluids (breeding grounds for bacteria), sheds lint, and is expensive to sterilize repeatedly. Spunbond nonwoven fabric solves all of these problems.     Key Properties That Save Lives Our polypropylene spunbond nonwoven is engineered specifically for medical environments. Here's what makes it indispensable: Bacterial BarrierUnlike woven fabrics with visible pores, spunbond fabric has a random fiber matrix that blocks microbial penetration. When used in surgical drapes and gowns, it dramatically reduces post-operative infection risks. Fluid Repellency (Hydrophobic)Polypropylene naturally repels water and blood. This is critical in operating rooms where fluid strike-through can transfer pathogens from patient to surgeon. For applications requiring absorption (like wound dressings), we can easily treat the surface to make it hydrophilic. Lint-Free & Low ParticulateCotton sheds fibers that can fall into open incisions or clog HVAC filters in cleanrooms. Spunbond fabric is thermally bonded—no adhesives, no loose fibers. This makes it ideal for sterile packaging and pharmaceutical cleanrooms. Breathable Yet ProtectiveWhile blocking fluids and bacteria, spunbond allows air and water vapor to pass through. Surgeons wearing spunbond gowns stay cooler and more comfortable during long procedures compared to impervious plastic alternatives. Cost-Effective DisposabilitySterilization (using ethylene oxide or gamma radiation) is straightforward and inexpensive. After single use, the fabric can be incinerated cleanly, as polypropylene contains no halogens or heavy metals.     Common Medical & Hygiene Applications Here is where you will find our spunbond fabric in action:     Application Why Spunbond? Surgical masks Filters particles; lightweight and comfortable Isolation gowns Fluid barrier; breathable; tear-resistant Surgical drapes & packs Sterile field protection; lint-free Wound dressings Can be treated for absorption; non-adherent options available Sterile packaging Breathable seal; withstands gamma sterilization Diapers & sanitary napkins Soft top sheet (treated hydrophilic) and fluid barrier back sheet Wet wipes Strong when wet; lint-free; chemically inert Medical mattress covers Fluid-proof; reduces cross-contamination     The COVID-19 Effect: A Material That Stepped Up The pandemic highlighted just how vital spunbond nonwoven fabric is. When the world needed billions of masks and gowns overnight, polypropylene spunbond was the only material that could be scaled quickly, cost-effectively, and reliably. Factories that once made shopping bags pivoted to producing medical-grade protective equipment because the underlying material—polypropylene spunbond—is fundamentally the same. Only the specifications (GSM, width, additive package) change.     Quality Matters: What to Look For Not all spunbond fabric is suitable for medical use. At [Your Company Name], our medical-grade spunbond meets strict standards: Basis weight: 10 to 100 GSM (typical medical gowns: 30–50 GSM; masks: 20–25 GSM) Hydrostatic head resistance: Verified fluid barrier performance Bacterial filtration efficiency (BFE): Tested for mask and drape applications UV stability: Not required for indoor medical use, but we offer sterile-grade packaging Additives: Antioxidants and processing aids only—no toxic stabilizers     Conclusion The next time you see a surgeon in an operating room or open a sterile bandage, remember: behind that simple white fabric is decades of materials science.  Spunbond nonwoven fabric—made from polypropylene—has redefined what healthcare textiles can do. It protects patients. It protects providers. And it does so at a cost that makes single-use sterility possible for everyone. Looking for medical-grade spunbond nonwoven fabric? HENGHUA Nonwoven produces certified, customizable PP spunbond for hygiene and healthcare applications worldwide. Contact us for technical data sheets, samples, or a quotation.

PP (polypropylene) spunbond nonwoven fabric has become one of the mainstream materials in the nonwoven field due to its advantages of low cost, good processability, and adjustable performance. With the improvement of environmental protection requirements and technological progress, its development prospects are mainly reflected in the following aspects: 1. Market demand growth Medical and hygiene products: After the global pandemic, the demand for medical protective clothing, masks, surgical drapes, and other materials continues to grow. PP spunbond non-woven fabric has become the preferred material due to its lightweight, breathable, and disinfectable properties. The average annual growth rate of the disposable hygiene products (such as diapers and sanitary napkins) market is about 5% to 7% (2023-2030). Packaging and Agriculture: Environmentally friendly packaging (recyclable PP non-woven bags) is replacing traditional plastic bags, and the demand for agricultural cover fabrics (weather resistant, biodegradable modified PP) is increasing. 2. Driven by technological innovation High performance flame-retardant PP non-woven fabric: Develop halogen-free flame retardant systems (such as expansion flame retardant IFR, nano magnesium hydroxide) to meet EU REACH and RoHS regulations. Multi functional composite: flame retardant+antibacterial (silver ion/quaternary ammonium salt), flame retardant+anti-static (carbon black/graphene coating). Degradability and circular economy: Bio based PP (such as Braskem bio PP extracted from sugarcane) is combined with biodegradable additives (such as PBAT blend) to partially replace traditional petroleum based PP. Chemical recycling technologies (such as pyrolysis or solvent methods) reduce waste PP non-woven fabrics into monomers, achieving closed-loop utilization. 3. Emerging application areas New Energy and Electronics Industry: Lithium battery separator (PP non-woven fabric substrate coated with ceramic layer) requires high porosity (40%~60%) and thermal stability (>200 ℃). Flexible electronic substrate (such as ultra-thin PP non-woven fabric for sensors, thickness<20 μ m). Intelligent textiles: Intelligent heating clothing, pressure sensing pads, etc. that integrate conductive fibers such as carbon nanotubes/PP composites. 4. Environmental Protection and Sustainable Development Green manufacturing process: Reduce production energy consumption (such as optimizing melt blown processes, reducing energy consumption by 20% to 30%). Promotion of environmentally friendly post-treatment technologies such as water-based ink printing and fluorine free waterproofing agents. Policy promotion: China's' plastic ban 'promotes the market for reusable PP non-woven bags; The EU SUP (Single Use Plastic) regulation encourages recyclable designs. The future of PP spunbond nonwoven fabric will revolve around three directions: high-performance, green, and intelligent. While maintaining stable growth in traditional fields, emerging areas such as new energy, healthcare, and smart wearables will become breakthrough points. Enterprises need to pay attention to technological upgrades (such as flame retardancy and degradability), policy compliance (such as the EU Green Deal), and the construction of circular economy models to maintain competitiveness.

Flame retardant PP (polypropylene) spunbond nonwoven fabric is widely used in fields with high requirements for fire safety due to its lightweight, chemical corrosion resistance, strong processability, and excellent flame retardant properties. The following is an analysis of its typical application scenarios and technical characteristics: 1. Construction and building materials field Fireproof isolation material Used for wall insulation layer (such as flame-retardant coating layer of rock wool/PET composite material), passing the EN 13501-1 fire rating test (such as B1 level). Advantages: It replaces traditional fiberglass cloth, avoids skin irritation, and has a low weight (50-100g/m ²) that does not affect structural load. Roof waterproofing substrate As a reinforcement layer of modified asphalt waterproofing membrane, its flame retardant performance meets the GB 8624-2012 standard. 2. Interior of transportation vehicles Automotive/high-speed rail/aviation interior The seat is filled with fire-resistant layer and ceiling lining fabric, and tested according to FMVSS 302 (vertical burning ≤ 100mm/min) or DIN 75200. Technical requirements: It is necessary to balance flame retardancy (LOI ≥ 28%) and low VOC (volatile organic compound) emissions, usually using a phosphorus nitrogen synergistic flame retardant system. Battery separator material Used as insulation layer for new energy vehicle battery packs, requiring high temperature resistance (above 150 ℃) and no melting droplets (UL-94 V0 level). 3. Personal protective equipment Firefighting suit/industrial protective suit As an outer barrier material or comfortable inner layer, it needs to pass the EN 11612 (thermal radiation protection) standard and is often used in combination with aramid fibers. Medical protective equipment The outer layer of surgical gowns and masks (weighing 20-40g/m ²) has passed the GB 19082-2009 flame retardant and anti-static dual function test. 4. Home and Public Facilities Flame retardant furniture lining fabric Sofa and mattress fire-resistant layer, in compliance with American CAL 117 (smoldering test) or British BS 5852 standard. Decorative materials for public places Hotel and theater curtains/wall coverings are required to be flame retardant and smoke suppressing (smoke density rating ≤ 75, GB/T 8627). 5. Industry and Packaging High temperature filter material Industrial smoke and dust filter bags (such as cement plants) need to have a temperature resistance of over 120 ℃, and aluminum hydroxide (ATH) is used as a flame retardant to have both smoke suppression properties. Electronic device packaging Precision instruments come with anti-static and flame-retardant packaging, with surface resistance controlled between 10 ⁶ and 10 ⁹ Ω (with the addition of carbon black or metal oxides). 6. Emerging fields New energy equipment The photovoltaic backsheet barrier layer needs to undergo UV aging testing (with a strength retention rate of ≥ 80% after 1000 hours). Smart Textiles Combining conductive fibers (such as silver fibers) to prepare flame-retardant intelligent heating suits, with synergistic design of flame retardancy and electrical thermal stability.

Introduction If you’re in agriculture, horticulture, or landscaping, you know the struggle: how to protect crops, control weeds, retain soil moisture, and reduce labor — all without breaking the bank. Enter polypropylene spunbond nonwoven fabric — a lightweight, strong, and versatile material that’s quietly revolutionizing how growers and landscapers work.   What is Polypropylene Spunbond Nonwoven Fabric? Unlike traditional woven fabrics or plastic films, PP spunbond nonwoven is made by extruding continuous polypropylene filaments into a web, then bonding them thermally. The result? A fabric that is:   Breathable (air and water pass through) Strong (resists tearing and puncturing) Lightweight & flexible (easy to lay, cut, and handle) UV-stabilized (lasts multiple seasons outdoors) Recyclable & chemically inert   Key Agricultural Applications   1. Weed Control Fabric Weeds are every farmer’s headache. Black PP spunbond nonwoven blocks sunlight completely, preventing weed germination, while allowing water and fertilizers to reach the soil. Unlike black plastic, it doesn’t create waterlogging or heat buildup.   2. Frost Protection & Crop Cover White or lightweight spunbond fabric acts as a floating row cover. It traps heat, protects young seedlings from frost, and keeps insects out — without smothering plants. Crops grow earlier and healthier.   3. Greenhouse & Nursery Flooring Durable, permeable, and easy to clean — PP spunbond is perfect for greenhouse walkways, potted plant mats, and nursery ground covers. It reduces mud, improves hygiene, and lowers disease risk.   4. Erosion Control on Slopes & Embankments On hillsides or freshly seeded areas, the fabric stabilizes soil while letting vegetation grow through. It’s a simple, degradable-friendly solution for temporary erosion control.   Why Choose PP Spunbond Over Other Materials?     Material Breathable? Reusable? Cost-effective? UV resistant? PP Spunbond ✅ Yes ✅ Yes (multiple seasons) ✅ Very ✅ Yes Black plastic film ❌ No ❌ No ❌ Low (disposal cost) ❌ No Woven geotextile ❌ No (dense) ✅ Yes ❌ Higher cost ✅ Yes   Real-World Benefits You Can Expect 50–70% less weeding labor 30% less water use (reduced evaporation) Faster crop emergence in cool weather Cleaner harvest (less soil splashing on leaves/fruit) Lower chemical herbicide use   Tips for Choosing the Right Fabric 20–30 gsm – Lightweight row covers, insect protection 50–70 gsm – General weed mat, walkways, frost protection 80–120 gsm – Heavy-duty pathways, long-term erosion control Black for maximum weed suppression; White for cooling/light reflection; Green/Brown for landscaping aesthetics   Conclusion Whether you run a small organic farm, a large nursery, or a landscaping crew, polypropylene spunbond nonwoven fabric delivers results you can see — and savings you can measure. It’s the smart, sustainable alternative to plastic films and woven fabrics.   👉 Looking for a reliable supplier? Contact us today for samples, custom widths, and roll lengths. We supply high-quality UV-stabilized PP spunbond nonwoven perfect for your growing conditions. marketing@henghuanonwoven.com    

The addition of calcium carbonate filling masterbatch in the production process of PP (polypropylene) spunbond nonwoven fabric gives it more advantages in terms of price, processing process, production cost, physical indicators, etc. Greatly expanding the application areas and sustainable development of PP spunbond nonwoven fabrics, energy conservation and emission reduction are inevitable trends in the development of the spunbond nonwoven fabric industry. Today we will introduce the process and application of calcium carbonate in non-woven fabrics! Manufacturing process of calcium carbonate in PP spunbond nonwoven fabric The raw material used in the production of PP spunbond nonwoven fabric is high melt index polypropylene, which is mixed evenly with calcium carbonate filled masterbatch. It enters the screw extruder from the hopper for extrusion melting, then enters the continuous pre filter, and finally enters the spinning box. The melt enters the spinning head through a metering pump, and is accurately measured by the metering pump to be quantitatively transported to the spinning plate, where it forms a continuous fine flow of melt through the spinning holes, namely the primary fibers. The newborn fibers are further cooled by sudden cold air and stretched by airflow to form long bundles. The long filament bundle is oscillated back and forth by the spinning roller, and evenly laid on the running mesh curtain to form a fiber web. Why choose calcium carbonate as the filling masterbatch? Calcium carbonate is an extremely important inorganic chemical product widely used in industries such as plastics, rubber, coatings, and papermaking. The characteristics of several commonly used fillers in industry are as follows: Calcium carbonate: The purpose of adding filler masterbatch to spunbond nonwoven fabric is to reduce costs. From the experience of modifying plastic resin functions and reducing costs, it is the most affordable and readily available, with a white and odorless powder appearance. The relative density is 2.71, the refractive index is 1.65, and the Mohs hardness is 3. Elderly soil: easy to disperse, relatively more expensive than calcium carbonate, also white in appearance, with a relative density of 2.6 and a refractive index of 1.56. Talc powder: easy to disperse, has certain lubricity to equipment during processing, and is a white powder with solid crystals. I want a density between 2.7 and 2.8, but the price is relatively expensive. Mica powder: The relative whiteness is lower. Due to its non-toxic nature, mica powder can be used in food contact products with a relative density between 2.8 and 3.0, a refractive index of 1.59, and a Mohs hardness of 3. Wollastonite: with a relative density of 2.9, a refractive index of 1.63, and a Mohs hardness of 4.5, its greatest advantage is that it does not absorb moisture and has little effect on the color masterbatch. Therefore, in the production process of non-woven fabrics, calcium carbonate is generally chosen as the main filler, and a small amount of kaolin or wollastonite is added appropriately to increase dispersion and transparency during the production process. Generally, calcium carbonate with a mesh size of 1500 or above is chosen, and it cannot be too fine because a mesh size that is too fine is expensive. In addition, ultrafine powders generally cannot be dispersed. Filling method of filling material Without changing the production equipment and process conditions, the filling material is added to the feeding hopper of the color masterbatch, but the addition ratio will also be limited as a result. Some manufacturers add a larger hopper and feeder specifically for adding fillers. The maximum amount of granular material added is about 20%, and the amount of powder added is about 8%. And now some manufacturers have added one or several mixing machines to mix these materials evenly and manually feed them into the hopper, which is relatively more uniform. The addition ratio can reach up to 30%, and the powder can also reach about 15%. Some manufacturers mix it evenly and then suck it into the hopper, but the uniformity is relatively poor, but it can also be added to 20% to 30%. Due to the cost reduction of filling masterbatch, the higher the concentration of filler in the filling masterbatch, the lower the cost, and the user addition ratio is relatively small. On the contrary, the lower the concentration, the higher the cost, and the higher the proportion of users adding. And the production functional masterbatch cannot be filled with masterbatch to avoid affecting its functionality. Although using calcium carbonate as a filling masterbatch can increase the yield of non-woven fabrics and reduce costs, the non-woven fabrics produced by this method have poor tear resistance and are highly susceptible to wear during use. To improve this drawback, The precautions for using filling masterbatch are as follows: 1. Production functional masterbatch cannot be filled with filler masterbatch to avoid affecting its functionality. Fillers have a hindering effect on some functional agents, but have no effect on color. 2. Filling masterbatch has a certain degradation effect, which affects the lifespan of non-woven fabrics, especially for non-woven fabrics produced from powder materials. 3. The testing standards for this product include: GW∝-2000 Standard for Control of Municipal Solid Waste Incineration GB 3682 Melt Flow Rate Q/TNGM 01-2006 Test Method for Pressure Rise Index of Polypropylene Fiber Color Masterbatch GB 1033 Test Method for Density of Filling Masterbatch GB 2913 Whiteness Test 4. Filling masterbatch is not easy to store in the air for a long time, and its moisture absorption is strong, which can affect its spinnability. If used irregularly, vacuum packaging can be chosen to fill masterbatch.

  MD stands for machine direction, which is the direction in which the machine operates, and for fabric, it is vertical. CD stands for cross direction, which means width direction. That is to say, the width direction of the spinning box, rolling mill, and pressure roller. PP spunbond nonwoven fabrics generally have significant differences between MD and CD in appearance, strength, elongation, softness, elasticity, tearing, and other aspects. So it is necessary and important to distinguish between MD and CD.

When you hear the term "non-woven fabric," the first thing that often comes to mind is polypropylene spunbond. It’s one of the most versatile materials on the market today, found in everything from medical gowns to shopping bags and agricultural covers. But have you ever stopped to wonder: What is spunbond fabric actually made of? If you are in the market for high-quality polypropylene spunbond nonwoven fabric, understanding its composition is key to appreciating why it outperforms traditional textiles in so many applications.   The Primary Ingredient: Polypropylene (PP) At its core, spunbond fabric is made from 100% virgin polypropylene (PP) , a type of thermoplastic polymer. Unlike woven fabrics (like cotton or polyester thread) that are knitted or woven together, spunbond fabric is created by a single, continuous process. Here’s how the raw material transforms into the final product:   Extrusion: Polypropylene chips (resin) are melted down at high temperatures. Spinning: The molten polymer is forced through a spinneret (think of it like a showerhead) to create continuous fine filaments. Drawing: These filaments are stretched by high-speed air to align the molecular chains, giving the fiber its strength. Web Formation: The continuous filaments are laid down onto a conveyor belt to form a uniform web. Bonding: Finally, the web passes through heated rollers (calendering) that bond the filaments together without the use of glue, adhesives, or stitching.   Why Polypropylene? You might wonder why polypropylene is the material of choice for spunbond manufacturing. The answer lies in its unique chemical and physical properties:   Chemical Inertness: Polypropylene is resistant to acids, alkalis, and organic solvents. This makes spunbond fabric ideal for medical, industrial, and agricultural applications where exposure to chemicals is common. Hydrophobic Nature: The material naturally repels water. While it is breathable (allowing air to pass through), it does not absorb moisture. For applications requiring absorption, manufacturers can easily treat the surface to make it hydrophilic. Lightweight Strength: Polypropylene has one of the highest strength-to-weight ratios among plastics. You can achieve a very strong fabric at a low basis weight (GSM). Thermal Bonding: Unlike other plastics, polypropylene bonds easily under heat and pressure, allowing for the seamless calendering process mentioned above.   Is It Just Polypropylene? While polypropylene is the standard for the majority of spunbond products (especially our propylene spunbond nonwoven series), the composition can vary slightly depending on the desired end-use:   Multilayer Composites (SMS): Sometimes, spunbond is combined with meltblown layers. While the spunbond layers remain polypropylene, the meltblown layer is also polypropylene, just with finer fibers to create barrier properties. Additives: To enhance performance, additives are mixed with the polypropylene resin during extrusion. These include: UV Stabilizers: To prevent degradation from sunlight for agricultural or outdoor uses. Flame Retardants: For furniture and industrial applications. Antioxidants: To ensure longevity and prevent yellowing. Pigments: To create custom colors beyond natural white.   Conclusion So, to answer the question: Spunbond fabric is primarily made of polypropylene resin. Through a sophisticated extrusion and bonding process, this raw plastic is transformed into a soft, strong, durable, and versatile fabric. Whether you need a lightweight fabric for protective apparel or a heavy-duty sheet for geotextiles, understanding that you are working with a high-quality polypropylene spunbond ensures you are choosing a material that offers durability, cost-efficiency, and recyclability.   Looking for a reliable supplier of spunbond nonwoven fabric?  Henghua Nonwoven specializes in customizing polypropylene spunbond to meet your exact specifications—from GSM (weight) to width and color. Email: Marketing@henghuanonwoven.com