How to Choose the Right Spunbond Nonwoven Fabric Specifications for Your Product

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Introduction: Why the Right Spunbond Specifications Matter

Choosing spunbond nonwoven fabric is not simply a matter of selecting a GSM and asking for a quotation.

For manufacturers of nonwoven bags, hygiene products, agricultural covers, medical products, packaging materials, and other converted goods, the fabric specification directly affects production efficiency, finished-product performance, material cost, and customer acceptance.

Two rolls of spunbond fabric may both be labeled 50 GSM, yet perform differently because of differences in fiber structure, bonding, raw material quality, surface treatment, tensile strength, elongation, thickness, and production process.

This is why buyers need to evaluate spunbond nonwoven fabric specifications as a complete specification system, rather than focusing on one number.

The most important specifications normally include:

• Basis weight (GSM)

• Fabric width

• Thickness

• Tensile strength

• Elongation

• Tear strength

• Air permeability

• Softness and stiffness

• Hydrophilic or hydrophobic properties

• Color

• Raw material

• Bonding pattern

• Roll length and roll diameter

• Packaging requirements

• Application-specific performance requirements

The correct specification depends on what you are manufacturing.

A fabric designed for a reusable shopping bag should not have exactly the same specification as fabric designed for crop protection, medical packaging, or hygiene components.

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1. Start With the Finished Product, Not the Fabric

The most common purchasing mistake is to start with a fabric specification before defining the finished product.

Instead, work backward from the application.

For example:

Finished product → production process → required fabric performance → fabric specification

Consider a nonwoven shopping bag.

The buyer may need:

• Good tensile strength

• Good tear resistance

• Suitable stiffness

• Attractive color

• Good printing performance

• Appropriate GSM

• Stable width

• Good dimensional stability

• Consistent roll quality

For an agricultural cover, the priorities may be different:

• Low weight

• Air permeability

• UV resistance

• Suitable tensile strength

• Outdoor durability

• Water behavior

For a hygiene application, softness and surface treatment may become much more important.

Therefore, the first question should not be:

“What GSM spunbond fabric do I need?”

A better question is:

“What performance does my finished product need?”

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2. The Main Spunbond Nonwoven Fabric Specifications Buyers Should Check

The following table summarizes the major specifications that should normally be considered when purchasing PP spunbond fabric.

Specification	What It Controls	Why Buyers Should Care
GSM	Fabric weight	Material consumption and strength
Width	Available fabric size	Machine compatibility and cutting efficiency
Thickness	Fabric bulk	Product structure and handling
Tensile strength	Resistance to pulling	Bag and structural performance
Elongation	Stretch before breaking	Flexibility and converting behavior
Tear strength	Resistance to tearing	Durability of finished products
Air permeability	Air movement through fabric	Agriculture, hygiene and filtration-related uses
Softness	Hand feel	Hygiene and consumer products
Stiffness	Structural support	Bags and packaging
Hydrophilicity	Water absorption/wetting	Hygiene-related applications
Hydrophobicity	Water resistance	Agriculture and protective applications
UV resistance	Outdoor durability	Agriculture and landscaping
Color	Appearance	Branding and product design
Raw material	Resin quality	Consistency and performance
Bonding pattern	Fiber bonding	Strength, softness and appearance
Roll length	Production quantity	Inventory and production planning

Not every application requires every specification to be tightly controlled.

The key is identifying the specifications that directly influence the final product.

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3. GSM: The First Specification Most Buyers Look At

GSM means grams per square meter.

It describes how much one square meter of fabric weighs.

For example:

• 20 GSM = approximately 20 g/m²

• 40 GSM = approximately 40 g/m²

• 60 GSM = approximately 60 g/m²

• 100 GSM = approximately 100 g/m²

GSM is one of the most important spunbond nonwoven fabric specifications, but it should not be treated as a direct measurement of quality.

A higher GSM generally means more material per square meter, but it does not automatically mean that the fabric is stronger in every direction.

For example, a well-designed 50 GSM fabric may provide better tensile performance per unit weight than a poorly optimized 60 GSM fabric.

GSM affects several commercial factors

If the price is quoted by kilogram, GSM directly affects the material cost per square meter.

A simplified calculation is:

Cost per m² = GSM ÷ 1000 × Price per kg

For example, if:

• GSM = 60

• Price = US$1.50/kg

Then:

60 ÷ 1000 × 1.50 = US$0.09/m²

This calculation is useful when comparing different GSM options.

However, the lowest GSM is not necessarily the lowest-cost solution.

If a thinner fabric requires more layers, creates production problems, or produces a weaker finished product, the apparent material saving may disappear.

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4. How to Choose the Correct GSM

The correct GSM depends heavily on the application.

An illustrative starting point might look like this:

Application	Common GSM Range*	Important Considerations
Lightweight packaging	20–40 GSM	Weight and cost
Nonwoven bags	40–100 GSM	Strength, stiffness and appearance
Agriculture	15–50 GSM	Air permeability, UV resistance and weight
Furniture/interlining	30–100 GSM	Structure and dimensional stability
Hygiene components	10–40 GSM	Softness and surface treatment
Protective applications	30–80+ GSM	Barrier and mechanical performance

*These are illustrative commercial ranges, not universal specifications. Actual requirements depend on product design and converting conditions.

A buyer should therefore avoid sending an RFQ that simply says:

“Please quote 50 GSM spunbond.”

A better RFQ would specify:

“50 GSM virgin PP spunbond nonwoven fabric, white, 1.6 m width, suitable for nonwoven bag production, with specified MD/CD tensile strength and consistent GSM tolerance.”

The second specification gives the supplier a much clearer manufacturing target.

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5. Fabric Width: An Often-Overlooked Specification

Width is particularly important for manufacturers using automatic converting equipment.

Common requirements may include:

• 1.6 m

• 1.8 m

• 2.0 m

• 2.4 m

• Customized widths

The correct width depends on the converting machine and the cutting layout.

For example, if your bag-making machine is designed around a specific web width, ordering the wrong width can increase edge waste.

Width affects material utilization

Suppose a finished product requires several pieces cut from each web.

A small change in roll width may allow a better nesting pattern and reduce scrap.

Therefore, width should be selected together with:

• Finished-product dimensions

• Cutting pattern

• Machine width

• Number of products per web

• Edge trimming requirements

For industrial buyers, width optimization can sometimes save more money than negotiating a small reduction in price per kilogram.

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6. Thickness: Don't Confuse Thickness With GSM

GSM and thickness are related, but they are not the same specification.

GSM measures mass per unit area.

Thickness measures physical thickness.

Two fabrics with the same GSM can have different thicknesses because of differences in:

• Fiber arrangement

• Bonding

• Calendering

• Compression

• Fiber diameter

• Production conditions

Thickness may matter when the fabric needs to provide:

• Cushioning

• Bulk

• Structure

• Coverage

• Specific machine feeding characteristics

For this reason, buyers who need strict thickness control should include a thickness test method and acceptable tolerance in the technical specification.

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7. Tensile Strength: One of the Most Important Mechanical Specifications

Tensile strength measures how much pulling force the fabric can withstand before breaking.

For spunbond fabric, buyers normally consider both:

• MD — Machine Direction

• CD — Cross Direction

This distinction matters because spunbond fabrics can have different mechanical properties in the two directions.

For example:

Property	MD	CD
Tensile strength	Higher	Lower
Elongation	Application-dependent	Application-dependent
Main influence	Machine direction	Cross-web direction

Actual values depend on GSM, production line, bonding technology, raw material and test method.

Don't specify tensile strength without a test method

Different laboratories and standards can produce different values depending on:

• Sample dimensions

• Gauge length

• Test speed

• Conditioning

• Instrument

• Test standard

Therefore, a professional RFQ should ideally specify the testing standard as well as the target value.

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8. Elongation: Strength Is Not the Whole Story

Elongation describes how much the fabric stretches before breaking.

A fabric with high tensile strength but very low elongation may behave differently during converting from a fabric with similar tensile strength and higher elongation.

Elongation can affect:

• Bag production

• Cutting

• Sewing

• Lamination

• Forming

• Handling

• Product deformation

For products that experience repeated pulling or mechanical deformation, elongation should be evaluated together with tensile strength.

This is why spunbond fabric specifications should be treated as a performance combination rather than a list of isolated numbers.

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9. Tear Strength: Important for Bags and Durable Products

Tensile strength and tear strength are different.

Tensile testing asks:

How much force is required to break the specimen by pulling it?

Tear testing asks:

How resistant is the material to the propagation of an existing tear?

This distinction becomes important for:

• Shopping bags

• Packaging bags

• Agricultural covers

• Protective covers

• Industrial packaging

• Reusable products

A fabric can have acceptable tensile strength but still perform poorly in a specific tear situation.

For bag manufacturers, therefore, the mechanical specification should ideally include both tensile and tear performance.

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10. Softness vs Stiffness

There is often a fundamental trade-off between softness and structural rigidity.

Softer spunbond fabric

Useful for applications where:

• Hand feel matters

• Skin contact is involved

• Fabric drape is important

• Flexibility is desirable

Stiffer spunbond fabric

Useful when:

• Shape retention is important

• The finished product needs structure

• Bag handles need support

• Packaging needs dimensional stability

A buyer should therefore tell the supplier whether the target product requires:

Soft / medium / stiff

rather than simply specifying GSM.

Two fabrics with the same GSM can feel substantially different because of differences in bonding pattern, fiber characteristics and finishing.

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11. Hydrophilic or Hydrophobic: Choose According to Water Behavior

Surface treatment is another important part of PP spunbond fabric specifications.

Hydrophilic spunbond

Hydrophilic treatment improves wetting and water absorption behavior.

It may be considered for applications where liquid needs to spread across or interact with the fabric surface.

Typical examples include certain hygiene-related components.

Hydrophobic spunbond

Hydrophobic treatment makes the surface more resistant to wetting.

It may be useful for:

• Agriculture

• Protective covers

• Outdoor applications

• Certain packaging applications

However, hydrophobic does not automatically mean waterproof.

A spunbond fabric can repel water droplets while still allowing water penetration under sufficient pressure.

If the product requires genuine water-barrier performance, a buyer may need:

• Film lamination

• Coating

• Composite construction

• A defined hydrostatic-pressure requirement

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12. Air Permeability

Air permeability measures how easily air passes through the fabric.

It is especially important for applications such as:

• Agricultural covers

• Hygiene products

• Breathable protective materials

• Certain filtration-support structures

• Ventilation-related products

A fabric with very low air permeability may provide greater resistance to airflow, while a highly permeable fabric allows air to move more freely.

The correct value depends on the application.

There is no universally “best” air permeability for spunbond fabric.

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13. Raw Material: Virgin PP vs Recycled PP

Raw material should also be part of the specification.

The buyer may need to specify:

• Virgin PP

• Recycled PP

• A controlled recycled-content formulation

• Specific sustainability requirements

Virgin PP is often selected when buyers prioritize:

• Consistent spinning

• Stable mechanical properties

• Appearance

• Odor control

• Tight process consistency

Recycled PP may be considered when:

• Recycled content is commercially important

• Cost targets are tighter

• The application allows greater variation

• Sustainability requirements favor recycled content

The correct choice depends on the finished product and customer requirements.

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14. Bonding Technology Can Change Fabric Performance

Spunbond fabric is not simply a collection of fibers.

The fibers need to be bonded to create a coherent web.

Thermal bonding parameters can influence:

• Tensile strength

• Tear strength

• Softness

• Surface appearance

• Air permeability

• Dimensional stability

Important production variables include:

• Bonding temperature

• Pressure

• Line speed

• Bonding area

• Embossing pattern

• Fiber structure

Increasing bonding is not always better.

Excessive bonding can make the fabric feel harder and may reduce certain functional properties.

The objective should be optimized bonding for the intended application.

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15. Color Is a Technical Specification Too

For commodity industrial materials, buyers sometimes treat color as purely cosmetic.

That can be a mistake.

Color can influence:

• Brand identity

• Product appearance

• Printing

• Customer recognition

• Batch consistency

For custom colors, buyers should ideally provide:

• Pantone reference

• Physical color sample

• Approved master sample

For large-volume orders, color consistency between production batches should also be controlled.

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16. UV Resistance for Outdoor Applications

If spunbond fabric will remain outdoors, standard PP fabric may not provide sufficient long-term UV durability.

UV exposure can gradually reduce mechanical properties.

For applications such as:

• Crop protection

• Nursery covers

• Landscaping

• Outdoor packaging

• Temporary protective covers

the buyer may need UV stabilization.

Instead of simply asking:

“Is this fabric UV resistant?”

a more useful requirement is:

“What UV stabilization level and expected outdoor exposure are required for my application?”

Service life depends on:

• UV intensity

• Climate

• Exposure duration

• Temperature

• Humidity

• Fabric GSM

• Color

• Stabilizer formulation

• Required retained strength

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17. GSM Alone Does Not Determine Fabric Quality

This is one of the most important points for buyers.

Imagine two suppliers quote:

Supplier A: 60 GSM
Supplier B: 60 GSM

The GSM is identical.

But they may differ in:

• Tensile strength

• Tear strength

• Thickness

• Softness

• MD/CD balance

• Air permeability

• Color consistency

• Width tolerance

• Roll weight

• Raw material

• Bonding quality

• Surface treatment

Therefore, a purchasing specification should never consist of only:

GSM + price/kg

A better specification includes the critical performance parameters required by the finished product.

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18. A Practical Specification Matrix by Application

The following matrix can help buyers identify which specifications deserve the most attention.

Application	GSM	Strength	Softness	Air Permeability	Water Behavior	UV Resistance	Width
Nonwoven bags	High	★★★★★	★★	★★	★★	★★	★★★★★
Agriculture	Medium	★★★★	★★	★★★★★	★★★★	★★★★★	★★★★
Hygiene	Medium	★★★	★★★★★	★★★★	★★★★★	★	★★★
Medical/protective	Medium	★★★★	★★★★	★★★	★★★★★	★	★★★★
Packaging	High	★★★★★	★★	★★	★★★	★★	★★★★★
Furniture/interlining	Medium	★★★★	★★★	★★★	★★	★	★★★★

The stars are a practical prioritization guide rather than laboratory specifications.

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19. How to Build a Complete Spunbond Fabric Specification Sheet

For repeat purchasing, it is better to create a standardized specification sheet.

A practical specification sheet can include:

Basic Information

• Product: PP spunbond nonwoven fabric

• Application:

• Color:

• Virgin/recycled PP:

• GSM:

• Width:

• Roll length:

Mechanical Properties

• MD tensile strength:

• CD tensile strength:

• MD elongation:

• CD elongation:

• Tear strength:

Physical Properties

• Thickness:

• Air permeability:

• Surface appearance:

• Uniformity:

Surface Treatment

• Hydrophilic:

• Hydrophobic:

• Antistatic:

• UV stabilization:

• Other treatment:

Packaging

• Roll diameter:

• Core diameter:

• Roll weight:

• Roll packaging:

• Pallet requirement:

This approach makes supplier comparison much easier.

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20. How Much Specification Tolerance Should Buyers Allow?

No manufacturing process produces an absolutely identical value on every square meter.

Therefore, buyers should define reasonable tolerances.

For example, a specification may include:

Parameter	Target	Example Tolerance
GSM	50 GSM	±5%
Width	1.60 m	±1%
Roll length	1,000 m	Defined by agreement
Tensile strength	Target value	Agreed test tolerance
Color	Approved sample	Controlled visually/instrumentally

These are examples only.

Actual tolerances should be agreed with the supplier according to:

• Product requirements

• Machine capability

• Industry standards

• Testing method

• Order quantity

Overly tight tolerances can increase manufacturing costs without providing meaningful benefits.

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21. How Specifications Affect the Final Cost

Buyers often compare suppliers only by price per kilogram.

This can lead to misleading conclusions.

Suppose:

Supplier A: US$1.45/kg
Supplier B: US$1.55/kg

At first glance, Supplier A appears cheaper.

But imagine Supplier A has lower mechanical performance and requires a higher GSM to achieve the same finished-product strength.

The relevant comparison becomes:

Cost per finished product, not simply price per kilogram.

Example

Suppose a manufacturer can use:

• 50 GSM fabric from Supplier B

but needs:

• 60 GSM fabric from Supplier A

Even if Supplier A's price per kilogram is lower, the additional material consumption may eliminate the apparent savings.

This is why professional buyers should compare:

Price/kg + GSM + performance + usable yield + production efficiency

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22. The Best Specification Is Not Always the Highest Specification

A common purchasing mistake is over-specification.

For example, a buyer may request:

• Extremely high tensile strength

• Very high tear strength

• Very high UV resistance

• Very low GSM

• Very soft hand feel

• Very low price

These requirements may conflict with one another.

A better approach is to identify the minimum performance level required by the finished product.

For example:

If the finished bag performs reliably with 50 GSM fabric, using 70 GSM fabric may simply increase material consumption.

Likewise:

If an agricultural cover only needs a certain outdoor service period, specifying an excessively long UV lifetime may add unnecessary cost.

The goal is not maximum specification.

The goal is the right specification at the right cost.

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23. How Buyers Should Request Samples

Before placing a large order, buyers should test samples under realistic production conditions.

Do not only touch the fabric or look at its color.

A useful evaluation process includes:

Step 1: Visual inspection

Check:

• Color

• Surface uniformity

• Holes

• Contamination

• Bonding pattern

• Roll appearance

Step 2: Physical measurement

Check:

• GSM

• Width

• Thickness

• Roll length

Step 3: Mechanical testing

Check:

• MD tensile

• CD tensile

• MD elongation

• CD elongation

• Tear strength

Step 4: Production trial

Run the fabric through the actual converting machine.

Observe:

• Feeding stability

• Cutting

• Folding

• Sewing

• Printing

• Heat sealing

• Lamination

• Final product appearance

Step 5: Finished-product testing

The final product—not just the raw fabric—should meet the required performance.

This is particularly important because a fabric that looks excellent in laboratory testing may still behave differently on a high-speed production line.

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24. A Buyer-Friendly Spunbond Specification Checklist

Before requesting quotations, prepare the following information:

Question	Buyer Requirement
What is the final product?	Bag / agriculture / hygiene / packaging / other
Required GSM?	Target or acceptable range
Required width?	Exact machine requirement
Color?	White / black / custom
Raw material?	Virgin / recycled
Strength requirement?	MD/CD target
Elongation requirement?	MD/CD target
Tear requirement?	Target
Softness?	Soft / medium / stiff
Water behavior?	Hydrophilic / hydrophobic / untreated
UV resistance?	Required / not required
Special treatment?	Antistatic / antibacterial / other
Roll requirement?	Length / diameter / weight
Packaging?	Standard / customized
Quantity?	Trial / 1×40HQ / monthly volume

The more clearly these requirements are defined, the easier it becomes to compare suppliers.

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25. Example: Choosing Specifications for a Nonwoven Shopping Bag

Suppose a buyer wants to manufacture reusable nonwoven shopping bags.

The finished product requires:

• Good load-bearing capacity

• Good tear resistance

• Attractive appearance

• Good printing

• Reasonable material cost

• Stable high-speed production

The buyer could begin with a specification such as:

Material: PP spunbond nonwoven
GSM: 50–80 GSM
Color: Customized
Width: According to bag-making machine
Raw material: Virgin PP
Strength: Defined MD/CD target
Elongation: Defined according to converting requirements
Surface: Suitable for printing
Hand feel: Medium stiffness
Treatment: Hydrophobic or untreated depending on application
Roll length: According to machine requirements

The exact GSM should then be confirmed through sample production.

If 50 GSM provides sufficient finished-bag performance, there may be no commercial reason to move to 70 GSM.

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26. Example: Choosing Specifications for Agricultural Spunbond

Agricultural applications have a different priority structure.

A grower or agricultural-material manufacturer may care more about:

• Low basis weight

• Air permeability

• Light transmission

• Water behavior

• UV resistance

• Tensile strength

• Outdoor durability

A typical specification discussion may therefore include:

Material: PP spunbond
GSM: Application-dependent
Color: White / black / customized
Width: According to field or machine requirements
UV stabilization: Required
Air permeability: Target range
Tensile strength: MD/CD target
Water behavior: Defined according to crop application
Roll length: Long roll for efficient installation

Here, simply increasing GSM may not solve the buyer's real problem.

The fabric needs to be optimized for the outdoor environment.

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27. Example: Choosing Specifications for Hygiene Applications

Hygiene products often prioritize:

• Softness

• Uniformity

• Air permeability

• Liquid management

• Skin-contact comfort

• Low odor

• Stable production

Depending on the construction, buyers may consider:

• Lower GSM

• Hydrophilic treatment

• Soft bonding pattern

• Consistent thickness

• Controlled tensile properties

• Clean virgin PP raw material

The required specification should be determined by the exact component and product structure.

A fabric specification suitable for an outer layer may not be suitable for a skin-contact layer.

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28. Common Mistakes When Choosing Spunbond Specifications

Mistake 1: Choosing GSM Only

GSM is important, but it is only one parameter.

Mistake 2: Comparing Price/kg Only

Always consider material consumption and finished-product cost.

Mistake 3: Ignoring MD and CD

Mechanical properties can differ significantly by direction.

Mistake 4: Ignoring the Converting Machine

A technically good fabric may still run poorly on a specific machine.

Mistake 5: Asking for “High Quality” Without Numbers

“High quality” means different things to different suppliers.

Define measurable requirements wherever possible.

Mistake 6: Over-Specifying

Unnecessary performance requirements can increase cost.

Mistake 7: Skipping Production Trials

Laboratory samples are not enough for high-volume manufacturing.

Mistake 8: Ignoring Roll Specifications

Incorrect roll diameter, length or weight can create logistical and machine-feeding problems.

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29. How to Compare Two Spunbond Suppliers

When comparing suppliers, use the same specification sheet for both.

For example:

Parameter	Supplier A	Supplier B
GSM	50	50
Width	1.60 m	1.60 m
MD tensile	Target	Target
CD tensile	Target	Target
MD elongation	Target	Target
CD elongation	Target	Target
Thickness	Target	Target
Air permeability	Target	Target
Raw material	Virgin PP	Virgin PP
Surface treatment	Defined	Defined
Roll length	Defined	Defined
Price/kg	Quoted	Quoted
Production trial	Pass/Fail	Pass/Fail

This makes supplier selection much more objective.

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30. What to Put in a Spunbond Nonwoven Fabric RFQ

A professional RFQ could look like this:

Product: PP Spunbond Nonwoven Fabric
Application: Nonwoven shopping bags
GSM: 60 GSM
Width: 1.60 m
Color: Black
Raw material: Virgin PP
MD/CD tensile: Please provide specification and test results
MD/CD elongation: Please provide
Tear strength: Please provide
Thickness: Please provide
Surface: Suitable for printing
Treatment: Hydrophobic
Roll length: Please quote standard and customized options
Quantity: 1 × 40HQ
Destination: [Port]
Please provide: TDS, sample, production lead time, packing details and quotation.

This is much more useful than simply asking:

“Please quote 60 GSM spunbond fabric.”

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31. Final Decision Framework

When selecting spunbond nonwoven fabric specifications, use this order:

Step 1 — Define the finished product

What are you manufacturing?

Step 2 — Define the required performance

What must the finished product withstand?

Step 3 — Select the basic fabric structure

Determine:

• GSM

• Width

• Thickness

• Raw material

• Bonding structure

Step 4 — Define mechanical requirements

Set:

• MD tensile

• CD tensile

• MD elongation

• CD elongation

• Tear strength

Step 5 — Define functional properties

Depending on the application:

• Air permeability

• Hydrophilicity

• Hydrophobicity

• UV resistance

• Softness

• Stiffness

• Printing performance

Step 6 — Define logistics

Specify:

• Roll length

• Roll weight

• Roll diameter

• Core size

• Packaging

• Container loading requirements

Step 7 — Test the sample

Evaluate both laboratory performance and actual production performance.

Step 8 — Compare total cost

Consider:

Price/kg → GSM → material consumption → production yield → finished-product cost

This process is more reliable than selecting fabric based on GSM or price alone.

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FAQ: Spunbond Nonwoven Fabric Specifications

What are the most important spunbond nonwoven fabric specifications?

The most important specifications usually include GSM, width, thickness, MD/CD tensile strength, elongation, tear strength, air permeability, softness, water behavior, raw material, color, surface treatment and roll specifications. The priorities depend on the application.

What GSM is best for spunbond nonwoven fabric?

There is no single best GSM. Lightweight agriculture applications may use much lower GSM than reusable bags or industrial packaging. The correct GSM should be determined by the finished-product performance and converting process.

Does higher GSM mean stronger spunbond fabric?

Not necessarily. Higher GSM generally means more material per square meter, but strength also depends on fiber structure, raw material, bonding technology and production conditions.

Should I choose virgin or recycled PP spunbond?

Virgin PP is generally preferred when consistency, appearance and stable mechanical performance are critical. Recycled PP can be attractive when recycled content or cost is a priority and the application allows it.

What is the difference between GSM and thickness?

GSM measures the mass of fabric per square meter, while thickness measures physical thickness. They are related but are not interchangeable.

Should I specify MD and CD tensile strength?

Yes, especially for applications where mechanical performance matters. Spunbond fabric can have different properties in the machine and cross-machine directions.

Is hydrophobic spunbond fabric waterproof?

No. Hydrophobic fabric resists wetting, but this does not automatically make it waterproof under pressure. A true water barrier may require coating, film lamination or another composite structure.

How do I compare quotations from different spunbond suppliers?

Use the same technical specification sheet for every supplier. Compare GSM, width, tensile strength, elongation, tear strength, treatment, raw material, roll specifications, production trial results and price—not price/kg alone.

What information should I send to a spunbond fabric manufacturer?

At minimum, provide the application, GSM, width, color, quantity, raw-material preference and intended use. For larger orders, also specify mechanical properties, surface treatment, roll requirements, packaging and testing requirements.

Can a supplier recommend the right spunbond specification?

Yes. An experienced manufacturer can usually recommend a starting specification based on the finished product, converting equipment, required performance and target cost. However, the final specification should ideally be confirmed through sample and production testing.

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Conclusion

Choosing the right spunbond nonwoven fabric specifications is a process of matching material performance with the requirements of the finished product.

The most important lesson is simple:

Do not buy spunbond fabric based on GSM or price alone.

Instead, evaluate the complete specification:

GSM + width + thickness + tensile + elongation + tear + air permeability + softness/stiffness + water behavior + raw material + treatment + roll requirements

Then test the material under actual production conditions.

For buyers purchasing container quantities, this approach can reduce material waste, improve converting efficiency, prevent quality disputes and help achieve a lower cost per finished product rather than simply a lower price per kilogram.