Spunbond vs Meltblown Nonwoven Fabric: What Is the Difference?

Introduction

When buyers compare nonwoven materials, spunbond vs meltblown is one of the most important distinctions to understand.

Although both materials can be produced from polypropylene (PP), they are designed for very different performance requirements.

Spunbond nonwoven fabric is generally associated with strength, durability, dimensional stability, air permeability, and structural support.

Meltblown nonwoven fabric is better known for its very fine fibers, high surface area, filtration capability, and ability to capture small particles.

This fundamental difference comes from the manufacturing process.

Spunbond typically uses continuous filaments that are drawn and formed into a web before thermal bonding.

Meltblown uses high-velocity hot air to attenuate molten polymer into extremely fine microfibers, creating a highly porous web with a much smaller fiber diameter.

As a result, the two materials can have very different performance even when they use the same polymer and have a similar GSM.

For buyers, the question is therefore not simply:

"Which is better, spunbond or meltblown?"

The better question is:

"Which material structure is appropriate for the function of my finished product?"

This guide explains the difference between spunbond and meltblown, including manufacturing process, fiber diameter, strength, filtration, air permeability, liquid resistance, applications, cost, and purchasing considerations.

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What Is Spunbond Nonwoven Fabric?

Spunbond nonwoven fabric is manufactured by extruding a thermoplastic polymer into continuous filaments, drawing the filaments, forming them into a web, and bonding the web.

Polypropylene is one of the most widely used polymers for PP spunbond nonwoven fabric.

A simplified production process is:

PP Resin → Extrusion → Filament Spinning → Cooling → Drawing → Web Formation → Thermal Bonding → Winding

The key characteristic of spunbond is its continuous filament structure.

Instead of producing extremely short fibers, the process creates long filaments that are distributed throughout the web.

This structure can provide:

• Good tensile strength

• Good tear resistance

• Dimensional stability

• Lightweight construction

• Good air permeability

• Good production efficiency

• Cost efficiency

• Good processability

Spunbond can also be manufactured with different:

• GSM

• Widths

• Colors

• Surface treatments

• Softness levels

• Hydrophilic properties

• Hydrophobic properties

• UV stabilization

• Lamination structures

Because of this versatility, spunbond is used in many industries.

Typical applications include:

• Nonwoven shopping bags

• Agricultural covers

• Furniture and mattress materials

• Hygiene products

• Medical products

• Packaging

• Construction materials

• Protective covers

• Filtration support layers

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What Is Meltblown Nonwoven Fabric?

Meltblown is another nonwoven manufacturing technology based on thermoplastic polymers.

Polypropylene is also widely used for meltblown production.

However, the manufacturing process is very different from spunbond.

A simplified meltblown process is:

PP Resin → Extrusion → Melt Filtration → Fine Die Orifices → High-Velocity Hot Air → Microfiber Formation → Web Collection → Winding

The molten polymer exits very small die orifices.

High-velocity hot air stretches the molten polymer into extremely fine fibers.

These fibers are then collected on a moving screen or forming surface to create a nonwoven web.

The resulting fiber diameter is much smaller than that of conventional spunbond.

This produces a structure with:

• Very high surface area

• Fine fiber distribution

• Small pore structure

• High filtration potential

• Low basis-weight options

• High particle-capture capability

Meltblown is therefore particularly important in filtration and barrier-related applications.

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Spunbond vs Meltblown: The Main Difference

The simplest way to understand spunbond vs meltblown is to look at the fiber structure.

Spunbond produces relatively larger continuous filaments designed primarily for structural performance.

Meltblown produces extremely fine fibers designed to create a high-surface-area, fine-pore web.

Property	Spunbond	Meltblown
Typical polymer	PP, PET and others	Mainly PP
Fiber form	Continuous filaments	Very fine fibers
Fiber diameter	Generally larger	Much finer
Main process	Spinning + drawing	Hot-air attenuation
Bonding	Usually thermal	Often self-bonded
Tensile strength	Generally higher	Generally lower
Filtration	Limited to moderate depending on structure	Excellent potential
Surface area	Moderate	Very high
Pore structure	Relatively open	Fine
Air permeability	Generally good	Application-dependent
Structural support	Excellent	Limited
Liquid barrier potential	Treatment-dependent	Good potential
Typical cost	Often lower	Often higher
Common application	Bags, agriculture, support layers	Filtration, masks, barrier layers

These are general characteristics.

Actual performance depends on:

• Polymer

• GSM

• Fiber diameter

• Web structure

• Bonding

• Additives

• Electrostatic treatment

• Production conditions

• Finishing

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How Is Spunbond Made?

Understanding the manufacturing process helps explain the difference between spunbond and meltblown.

Step 1: Polymer Feeding

PP resin is introduced into the extrusion system.

Step 2: Melting

The polymer is heated until it reaches the appropriate molten state.

Step 3: Filament Spinning

The molten polymer passes through spinnerets to form continuous filaments.

Step 4: Cooling

The filaments are cooled by controlled air.

Step 5: Drawing

The filaments are stretched to improve molecular orientation and achieve the desired filament properties.

Step 6: Web Formation

The filaments are distributed into a web.

The uniformity of the web influences:

• GSM

• Thickness

• Tensile strength

• Air permeability

• Appearance

• MD/CD performance

Step 7: Thermal Bonding

Heat and pressure are applied to bond the filaments.

A patterned calender can create the characteristic bonding points of spunbond fabric.

Step 8: Winding

The finished fabric is slit and wound into rolls.

This process is highly suitable for large-volume production.

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How Is Meltblown Made?

Meltblown production uses a different method.

Step 1: Polymer Feeding

PP resin is fed into the extruder.

Step 2: Polymer Melting

The polymer is heated until it reaches the appropriate melt condition.

Step 3: Extrusion Through Fine Die Orifices

The molten polymer passes through a meltblown die containing many small orifices.

Step 4: High-Velocity Hot Air

High-temperature, high-velocity air attenuates the molten polymer streams.

This rapidly stretches the polymer into very fine fibers.

Step 5: Fiber Cooling and Solidification

The fibers cool and solidify as they travel toward the collecting surface.

Step 6: Web Formation

The fine fibers accumulate on the forming surface.

Because the fibers are extremely fine and randomly distributed, the resulting web can have a very large surface area and fine pore structure.

Step 7: Optional Treatment

For filtration applications, additional treatment may be used.

One important example is electrostatic charging, which can improve particle capture without necessarily requiring a large increase in pressure drop.

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Why Are Meltblown Fibers So Much Finer?

Fiber diameter is one of the most important differences in spunbond vs meltblown.

Spunbond filaments are mechanically drawn after extrusion.

Meltblown fibers are attenuated directly by high-velocity hot air.

This creates much finer fibers.

The finer fiber structure gives meltblown a much larger surface area per unit mass.

This is extremely useful for filtration.

Imagine two materials containing the same amount of polymer.

If one material is divided into much finer fibers, the total surface area can become dramatically larger.

That creates more opportunities for particles to interact with the fiber network.

This is one reason meltblown became an important material for:

• Air filtration

• Face masks

• Respiratory protection

• Liquid filtration

• Oil absorption

• Barrier materials

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Spunbond vs Meltblown: Which Is Stronger?

In most conventional constructions, spunbond has a significant advantage in tensile strength and structural integrity.

This is largely related to its continuous filament structure and bonding system.

Spunbond can provide:

• High tensile strength

• Good tear resistance

• Good dimensional stability

• Good handling during converting

• Better structural support

Meltblown is usually not selected when high mechanical strength is the primary requirement.

Its extremely fine fiber structure is optimized for filtration and surface area rather than structural strength.

However, this does not mean meltblown is "weak" in every sense.

A meltblown layer can provide valuable functional performance while being combined with stronger materials.

This leads to one of the most important concepts in nonwoven engineering:

Different nonwoven layers can perform different jobs.

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Why Is SMS Made from Spunbond and Meltblown?

One of the clearest examples of spunbond vs meltblown is the SMS nonwoven structure.

SMS stands for:

Spunbond + Meltblown + Spunbond

A typical SMS structure contains:

S + M + S

The outer spunbond layers provide:

• Mechanical strength

• Handling stability

• Structural support

The middle meltblown layer provides:

• Fine fiber structure

• Barrier properties

• Filtration potential

• Fine pore structure

The combination produces a material that can achieve a better balance between strength and functional protection than a single layer alone.

This principle is widely used in:

• Medical gowns

• Protective clothing

• Hygiene products

• Filtration materials

• Barrier products

More complex structures such as SSMMS can use multiple spunbond and meltblown layers to achieve specific performance targets.

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Spunbond vs Meltblown for Filtration

Filtration is where meltblown generally has the strongest advantage.

Meltblown's fine fibers create:

• High surface area

• Small pore structures

• High particle interception potential

• Good filtration efficiency potential

Filtration performance depends on several mechanisms, including:

• Mechanical interception

• Inertial impaction

• Diffusion

• Electrostatic attraction

The relative contribution of each mechanism depends on:

• Particle size

• Fiber diameter

• Web structure

• Airflow

• Surface charge

• Filter thickness

• Packing density

For this reason, filtration performance cannot be determined simply from GSM.

Two meltblown fabrics with the same GSM can have significantly different filtration performance.

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Spunbond vs Meltblown for Face Masks

Face masks provide a practical example of how the two materials can work together.

A typical disposable medical or protective mask may contain multiple layers.

A simplified structure can be:

Spunbond / Meltblown / Spunbond

The outer spunbond layers can provide:

• Mechanical protection

• Shape

• Handling strength

• Comfort-related properties depending on design

The meltblown middle layer can provide:

• Particle filtration

• Fine fiber structure

• Functional filtration performance

The actual construction of a mask varies by product type and required standard.

Therefore, it is not accurate to say:

"The mask is made from meltblown."

A better description is often:

"The mask uses a meltblown filtration layer supported by spunbond layers."

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Spunbond vs Meltblown for Liquid Filtration

Meltblown can also be used for liquid filtration.

Its fine fiber network can provide high surface area and controlled pore structures.

Potential applications include:

• Water filtration

• Industrial liquid filtration

• Oil filtration

• Chemical filtration

• Process filtration

However, filtration performance depends heavily on the target particle size and the required flow rate.

For liquid filtration, buyers should evaluate:

• Filtration rating

• Flow rate

• Pressure drop

• Dirt-holding capacity

• Chemical compatibility

• Temperature resistance

• Wet strength

A fabric with excellent particle capture may not necessarily provide the required flow rate.

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Spunbond vs Meltblown for Air Filtration

Meltblown is commonly used in air filtration because its fine fibers can capture particles efficiently.

However, filtration efficiency is only one side of filter performance.

Buyers should also consider:

Pressure drop

A filter that captures particles extremely well but creates excessive airflow resistance may not be suitable for the intended equipment.

Therefore, a professional air-filter specification should consider:

• Particle filtration efficiency

• Airflow

• Pressure drop

• GSM

• Thickness

• Fiber diameter

• Electrostatic charge

• Service life

Spunbond can also be used in filtration systems, particularly as a support or pre-filtration layer.

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Spunbond vs Meltblown: Air Permeability

Both materials can be air permeable, but their pore structures are different.

Spunbond generally has a more open filament structure.

This can result in good airflow and relatively low resistance.

Meltblown contains much finer fibers and a more complex pore structure.

This can increase filtration performance but may also increase airflow resistance.

The relationship can be summarized as:

Finer fibers → greater surface area → stronger particle interaction → potentially higher filtration efficiency

but also potentially:

Finer structure → greater airflow resistance

Therefore, filter design is always a balance between:

Filtration efficiency + pressure drop + service life

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Spunbond vs Meltblown: Water Resistance

The two materials can both be engineered for water-related applications, but their behavior differs.

Standard PP itself is hydrophobic.

However, fabric performance depends on:

• Fiber diameter

• Web structure

• GSM

• Thickness

• Surface treatment

• Pore size

• Pressure

• Lamination

Spunbond can be treated or laminated to improve water resistance.

Meltblown's fine fiber structure can provide useful barrier characteristics, particularly when incorporated into multilayer constructions.

However:

Water resistance is not the same as waterproofing.

A fabric may repel water droplets under one test condition but allow penetration under increased hydrostatic pressure.

For buyers, the correct specification should identify the actual required test and performance level.

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Spunbond vs Meltblown: Thickness

GSM and thickness should not be treated as interchangeable specifications.

A fabric's thickness depends on:

• Fiber diameter

• Fiber packing

• GSM

• Web structure

• Bonding

• Compression

• Production conditions

Meltblown's fine fibers can create a dense network even at relatively low basis weights.

Spunbond's larger continuous filaments create a different three-dimensional structure.

Therefore, two fabrics with the same GSM can have different:

• Thickness

• Air permeability

• Pore structure

• Tensile strength

• Filtration performance

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Spunbond vs Meltblown: GSM

GSM means:

grams per square meter

It tells buyers how much fabric mass is present per square meter.

However, GSM alone does not determine:

• Strength

• Filtration efficiency

• Air permeability

• Barrier performance

• Softness

• Thickness

For example, a 30 GSM spunbond and a 30 GSM meltblown are not equivalent materials.

They contain a similar amount of material per square meter, but their fiber structures are fundamentally different.

This is why professional buyers should never compare nonwoven fabrics using GSM alone.

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Spunbond vs Meltblown: Cost

Spunbond is often more economical for applications where the primary requirement is structural fabric.

Meltblown can be more expensive because the manufacturing process requires:

• Fine die technology

• Precise process control

• High-temperature air systems

• Tight fiber-diameter control

• Specialized production equipment

• Additional filtration-related processing when required

However, the cost comparison should always be based on the final application.

If a product requires filtration, buying cheaper spunbond instead of meltblown may result in a material that simply cannot meet the required performance.

Therefore:

Lowest price/kg ≠ lowest total cost

The correct comparison is:

Required performance → Material quantity → Conversion cost → Finished-product performance → Total product cost

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Spunbond vs Meltblown: Main Applications

Application	Spunbond	Meltblown
Nonwoven bags	★★★★★	★
Agricultural covers	★★★★★	★
Furniture backing	★★★★★	★
Mattress materials	★★★★★	★
Hygiene outer layers	★★★★★	★★★
Medical protective products	★★★★	★★★★
Face mask filtration	★★★	★★★★★
Air filtration	★★★	★★★★★
Liquid filtration	★★	★★★★★
Oil absorption	★★	★★★★★
Barrier layers	★★★	★★★★★
Structural support	★★★★★	★★
High-strength applications	★★★★★	★★

The ratings are practical comparisons, not universal technical specifications.

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Spunbond vs Meltblown for Hygiene Products

Both materials are important in hygiene-product manufacturing.

Spunbond may be used for:

• Top sheets

• Backing layers

• Distribution structures

• Structural layers

• Acquisition layers

• External surfaces

Meltblown can provide:

• Fine fiber structures

• Liquid management functions

• Filtration

• Barrier performance

In advanced hygiene products, different nonwoven layers may be combined to create a specific performance profile.

This is similar to SMS technology, where each layer performs a different function.

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Spunbond vs Meltblown for Medical Products

Medical products often require a combination of:

• Strength

• Breathability

• Barrier performance

• Particle protection

• Comfort

• Liquid resistance

Spunbond can contribute strength and structure.

Meltblown can contribute fine-fiber filtration and barrier functions.

Therefore, multilayer structures can be more effective than trying to force one material to perform every function.

For example:

S + M + S

can create a functional balance between structural support and barrier/filtration properties.

The exact construction should be selected according to the finished product and applicable performance requirements.

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Spunbond vs Meltblown: Tensile Strength

Tensile strength is generally one of the areas where spunbond has an advantage.

The continuous filament structure gives spunbond a relatively strong load-bearing network.

Meltblown's extremely fine fibers are primarily optimized for surface area and filtration rather than mechanical strength.

A simple comparison:

Property	Spunbond	Meltblown
Continuous filaments	Yes	No
Fine microfiber structure	No	Yes
Structural strength	Generally high	Generally lower
Filtration potential	Moderate	High
Load-bearing capability	Good	Limited

For applications such as bags or agricultural covers, spunbond is usually much more appropriate.

For filtration media, tensile strength may be secondary to filtration efficiency.

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Spunbond vs Meltblown: Tear Resistance

Tear resistance is particularly important when the material must survive:

• Sewing

• Cutting

• Folding

• Transportation

• Converting

• Mechanical handling

Spunbond generally has an advantage because its continuous filament network provides structural integrity.

Meltblown is more vulnerable to mechanical damage if used alone in applications requiring significant handling strength.

This is another reason why meltblown is often placed between stronger layers in composite constructions.

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Spunbond vs Meltblown: Elongation

Elongation describes how much the fabric stretches before breaking under a specified test condition.

Spunbond's elongation depends on:

• Polymer

• Filament orientation

• Bonding pattern

• GSM

• Production conditions

Meltblown elongation is influenced by:

• Fiber diameter

• Fiber entanglement

• Web density

• Polymer properties

• Web structure

Neither high nor low elongation is automatically better.

The required value depends on the application.

For a shopping bag, strength and controlled deformation may be more important.

For a filtration media, filtration efficiency and pressure drop may be more important than elongation.

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Spunbond vs Meltblown: Softness

Softness is not the main reason buyers choose meltblown.

Meltblown is designed primarily around fine fiber structure and functional performance.

Spunbond can be engineered with different bonding patterns and processing conditions to provide different levels of softness.

For hygiene products where skin contact is important, the overall product structure may combine different materials.

Therefore, if softness is the main requirement, buyers should specify:

• Hand feel

• Surface smoothness

• Bending stiffness

• Compression behavior

• Intended skin contact

rather than assuming one manufacturing technology automatically provides the ideal softness.

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Spunbond vs Meltblown: Which Is Better for Masks?

For filtration masks, meltblown is generally the more important material because of its fine fiber structure and filtration potential.

However, masks typically need more than filtration.

They also need:

• Mechanical strength

• Shape retention

• Comfort

• Breathability

• Skin-contact performance

This is why multilayer structures are common.

A simplified structure is:

Spunbond + Meltblown + Spunbond

The spunbond layers provide structural support while the meltblown layer provides filtration functionality.

Therefore, asking:

"Should I use spunbond or meltblown for a mask?"

may be the wrong question.

A better question is:

"What combination of layers provides the required filtration, airflow, strength, and comfort?"

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Can Spunbond Replace Meltblown?

Usually, not when the primary requirement is high-efficiency fine-particle filtration.

Spunbond and meltblown have fundamentally different fiber structures.

Replacing a meltblown filtration layer with ordinary spunbond can significantly change:

• Filtration efficiency

• Pressure drop

• Pore structure

• Particle capture

• Overall product performance

However, spunbond can sometimes be used as:

• A support layer

• A pre-filter

• A protective outer layer

The correct choice depends on the filtration requirement.

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Can Meltblown Replace Spunbond?

Usually, not when high mechanical strength is required.

Meltblown is not normally intended to replace a structural spunbond layer in applications such as:

• Shopping bags

• Agricultural covers

• Furniture backing

• Strong protective covers

Meltblown can provide important functional properties, but its fine fiber structure does not make it an ideal structural fabric.

This is why multilayer nonwoven structures are so useful.

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Why SMS Is Often Better Than Using Only One Material

The biggest advantage of combining spunbond and meltblown is that each material can perform a different job.

Spunbond contributes:

Strength + structure + handling

Meltblown contributes:

Fine fibers + filtration + barrier functionality

Together:

Spunbond + Meltblown + Spunbond

can produce a material with a more balanced performance profile.

This concept is widely used in medical, hygiene, filtration, and protective applications.

The same principle applies to more complex multilayer structures.

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How Buyers Should Compare Spunbond and Meltblown Suppliers

When purchasing spunbond, buyers should focus on:

• GSM

• Width

• MD tensile

• CD tensile

• Elongation

• Tear strength

• Thickness

• Air permeability

• Treatment

• UV resistance when required

• Roll length

• Color

For meltblown, additional specifications may become critical:

• Fiber diameter

• Filtration efficiency

• Pressure drop

• Air permeability

• GSM

• Thickness

• Electrostatic charge

• Pore structure

• Hydrostatic performance

• Wet strength

• Roll width

This means a supplier quotation that only says:

"100% PP, 25 GSM"

is not enough to evaluate meltblown for a filtration application.

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Important Meltblown Purchasing Question: Is It Electrically Charged?

For filtration applications, buyers should ask whether the meltblown has undergone an electrostatic treatment when the application requires it.

Electrostatic charging can improve particle capture by adding electrostatic attraction to the mechanical filtration mechanisms.

However, filtration performance can change depending on:

• Charge level

• Storage conditions

• Humidity

• Fiber structure

• Airflow

• Target particle size

Therefore, buyers should request actual test data rather than relying only on a statement such as:

"High filtration efficiency."

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What Test Data Should Buyers Request?

For spunbond, useful test data can include:

Test	Why It Matters
GSM	Material quantity
Thickness	Physical structure
MD tensile	Machine-direction strength
CD tensile	Cross-direction strength
MD/CD elongation	Deformation behavior
Tear strength	Tear resistance
Air permeability	Breathability/airflow
Hydrostatic pressure	Water resistance
UV resistance	Outdoor durability

For meltblown filtration media:

Test	Why It Matters
GSM	Basis weight
Thickness	Web structure
Fiber diameter	Filtration structure
Filtration efficiency	Particle capture
Pressure drop	Airflow resistance
Air permeability	Flow performance
Electrostatic properties	Charged filtration performance
Tensile strength	Handling strength
Moisture resistance	Environmental stability

The specific test method should also be identified.

Two suppliers can report different results that are not directly comparable if they use different testing conditions or standards.

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Cost per Square Meter

For B2B purchasing, comparing price per kilogram alone can be misleading.

A simple conversion is:

Cost per m² = GSM ÷ 1000 × Price per kg

For example, assume:

• GSM = 30 g/m²

• Price = $2.00/kg

Then:

30 ÷ 1000 × $2.00 = $0.06/m²

This calculation allows buyers to compare different GSM products more easily.

However, meltblown buyers should also consider the performance obtained from each square meter.

If one material achieves the required filtration performance at a lower GSM, the higher price per kilogram may not necessarily result in a higher cost per finished filter.

This is why:

Cost per required performance

can be more meaningful than:

Price per kilogram

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Spunbond vs Meltblown: A Practical Decision Framework

Choose spunbond when you primarily need:

• Strength

• Structural support

• Low cost

• Durability

• Dimensional stability

• Good handling

• Large-volume production

• Agricultural materials

• Nonwoven bags

• Furniture materials

Choose meltblown when you primarily need:

• Fine fiber structure

• High surface area

• Filtration

• Particle capture

• Fine pore structure

• Oil absorption

• Barrier functionality

Choose a spunbond + meltblown composite when you need both:

Strength + filtration/barrier performance

This is why SMS and related multilayer structures are commercially important.

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Spunbond vs Meltblown: Quick Selection Guide

If Your Main Requirement Is...	Recommended Starting Point
Shopping bags	Spunbond
Agricultural cover	Spunbond
Mattress backing	Spunbond
Furniture lining	Spunbond
Structural support	Spunbond
High tensile strength	Spunbond
Particle filtration	Meltblown
Air filtration	Meltblown
Liquid filtration	Meltblown
Oil absorption	Meltblown
Mask filtration layer	Meltblown
Barrier layer	Meltblown
Strength + filtration	SMS / composite
Strength + barrier	SMS / multilayer

This table is a starting point. The final material should always be selected based on the actual product specification and test requirements.

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Common Mistakes When Comparing Spunbond and Meltblown

Mistake 1: Comparing Only GSM

The same GSM does not mean the same performance.

A 25 GSM spunbond and a 25 GSM meltblown have completely different fiber structures.

Mistake 2: Assuming Higher GSM Means Better Filtration

Filtration depends on:

• Fiber diameter

• Web structure

• Surface area

• Charge

• Thickness

• Airflow conditions

GSM is only one variable.

Mistake 3: Assuming Meltblown Is Always Better

Meltblown is better for certain functions, especially filtration.

It is not a replacement for spunbond in structural applications.

Mistake 4: Using Spunbond When Fine Filtration Is Required

Ordinary spunbond may not provide the required filtration efficiency.

Mistake 5: Using Meltblown as a Structural Fabric

Meltblown is generally not the economical choice for applications requiring high mechanical strength.

Mistake 6: Ignoring Pressure Drop

For filters, high filtration efficiency alone is not enough.

Airflow resistance must also be evaluated.

Mistake 7: Ignoring Multilayer Structures

Many advanced products work better by combining different nonwoven technologies.

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Spunbond vs Meltblown: The Bottom Line

The difference between spunbond and meltblown comes down primarily to fiber structure and manufacturing technology.

Spunbond creates relatively larger continuous filaments that form a strong and stable web.

Meltblown creates extremely fine fibers that form a high-surface-area web with strong filtration potential.

Therefore:

Spunbond = strength + structure + cost efficiency

Meltblown = fine fibers + filtration + functional barrier performance

Neither material is universally better.

For bags, agriculture, furniture, packaging, and structural applications, spunbond is often the more practical option.

For filtration, masks, liquid filtration, oil absorption, and fine barrier applications, meltblown may be more appropriate.

For products that need both mechanical strength and filtration or barrier performance, combining the two technologies can be the better solution.

The most important purchasing principle is:

Do not select a nonwoven fabric based on the material name alone. Select it based on the required finished-product performance.

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FAQ

What is the main difference between spunbond and meltblown?

Spunbond is generally produced as continuous filaments and bonded into a strong web, while meltblown uses high-velocity hot air to create extremely fine fibers. Spunbond is mainly valued for strength and structure, while meltblown is mainly valued for filtration and high surface area.

Is spunbond stronger than meltblown?

Generally, yes for comparable conventional constructions. Spunbond's continuous filament structure provides better mechanical strength and structural stability in many applications.

Is meltblown the same as spunbond?

No. They are different nonwoven manufacturing technologies with different fiber structures and performance characteristics.

Why is meltblown used in face masks?

Meltblown can produce extremely fine fibers and a high-surface-area web that provides strong particle filtration potential. It is commonly used as a filtration layer in multilayer mask structures.

Can spunbond be used in face masks?

Yes. Spunbond can be used as outer or inner structural layers in many mask constructions. However, ordinary spunbond is generally not a direct substitute for a high-performance meltblown filtration layer.

What is SMS nonwoven fabric?

SMS stands for Spunbond-Meltblown-Spunbond. It combines stronger spunbond layers with a fine-fiber meltblown layer to provide a balance of strength, filtration, and barrier-related properties.

Is meltblown waterproof?

Not necessarily. Meltblown can provide useful barrier characteristics, but water resistance depends on fiber structure, GSM, thickness, pore structure, treatment, pressure, and the specific product design.

Which has better air permeability?

Neither material is universally better. Spunbond often provides relatively open airflow, while meltblown's fine structure can increase filtration efficiency but also airflow resistance. Actual air-permeability and pressure-drop data should be compared.

Which is cheaper, spunbond or meltblown?

Spunbond is often more economical for structural applications because of its high production efficiency. Meltblown can have a higher cost because of its specialized production process and tighter process requirements.

Can meltblown be used for liquid filtration?

Yes. Meltblown is widely used in selected liquid filtration applications because its fine fibers can create a controlled filtration structure.

Does higher GSM always mean better meltblown filtration?

No. Filtration depends on fiber diameter, web structure, thickness, electrostatic properties, particle size, airflow, and other factors. Higher GSM alone does not guarantee higher filtration efficiency.

Why combine spunbond and meltblown?

Combining the two allows each layer to perform a different function. Spunbond provides mechanical strength and structural support, while meltblown provides fine-fiber filtration and barrier-related performance.

Which material should I choose for my product?

Choose spunbond when strength, durability, structure, and cost efficiency are the main requirements. Choose meltblown when filtration, fine fiber structure, or high surface area is more important. If you need both, consider an SMS or other multilayer structure.