What Does GSM Mean in Spunbond Nonwoven Fabric?

When buying spunbond nonwoven fabric, one of the first specifications a supplier will ask for is GSM.

GSM means grams per square meter (g/m²). It describes how much one square meter of fabric weighs.

For example:

GSM	Weight of 1 m²	Typical commercial positioning
10 g/m²	10 g	Very lightweight
15 g/m²	15 g	Lightweight
20 g/m²	20 g	Lightweight/general use
30 g/m²	30 g	Medium-light
40 g/m²	40 g	Medium
50 g/m²	50 g	Medium-heavy
70 g/m²	70 g	Heavy
100 g/m²	100 g	Heavy-duty

However, GSM is more than a number describing fabric weight.

For buyers, the selected spunbond nonwoven GSM can influence:

• Tensile strength

• Tear resistance

• Thickness

• Stiffness and hand feel

• Opacity and coverage

• Air permeability

• Liquid behavior

• Material consumption

• Cost per kilogram

• Cost per square meter

• Finished-product performance

This is why selecting the correct spunbond nonwoven GSM should not be based simply on choosing the heaviest fabric available.

The objective is to find the lowest practical GSM that still meets the application's performance requirements.

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1. How Is Spunbond Nonwoven GSM Calculated?

The basic GSM calculation is simple:

GSM = Fabric Weight ÷ Fabric Area

If a sample weighs 30 grams and covers exactly 1 square meter:

GSM = 30 g ÷ 1 m² = 30 g/m²

In production, manufacturers normally control GSM by controlling the amount of polymer distributed into the web over a defined production width and area.

For a buyer, the more useful question is not only:

"What is the GSM?"

but also:

"How consistent is the GSM across the entire roll?"

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GSM Tolerance Matters

A roll labeled as 30 g/m² does not necessarily mean every square meter weighs exactly 30 grams.

Manufacturing variation can occur across:

• Machine direction (MD)

• Cross direction (CD)

• Different production runs

• Different rolls from the same order

For example, a nominal 30 GSM product might show small variations around the target depending on the manufacturing process and specification.

This matters because GSM variation can lead to variation in:

• Tensile strength

• Thickness

• Opacity

• Air permeability

• Product weight

• Finished-product consumption

For high-volume B2B applications, GSM consistency can be just as important as the nominal GSM itself.

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2. Why Does GSM Affect Spunbond Fabric Strength?

One of the most common assumptions in nonwoven procurement is:

Higher GSM = stronger fabric.

This is directionally true in many cases, but it is not a complete rule.

A higher GSM means more polymer mass is distributed within each square meter. Depending on filament structure, bonding conditions and raw material, this can provide more material capable of carrying load.

However, two spunbond fabrics with the same GSM can have noticeably different strength.

Why?

Because strength also depends on:

• Polymer type and grade

• Filament diameter

• Filament orientation

• Web uniformity

• Molecular orientation

• Bonding pattern

• Bonding temperature

• Calender pressure

• MD/CD structure

• Additives

• Production-line conditions

Therefore:

GSM is a major input variable, but it is not a complete description of fabric strength.

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3. GSM vs Tensile Strength

When evaluating spunbond fabric for industrial or commercial applications, buyers should look at GSM together with tensile strength.

Tensile strength is commonly reported separately in:

• Machine Direction (MD)

• Cross Direction (CD)

A fabric may have significantly different MD and CD tensile values.

For example:

Specification	Fabric A	Fabric B
GSM	30 g/m²	40 g/m²
MD tensile	Higher	Higher
CD tensile	Moderate	Higher
Thickness	Lower	Higher
Material cost/m²	Lower	Higher
Potential coverage	Higher	Lower

The 40 GSM fabric will often provide greater overall material mass per square meter, but that does not automatically mean it is the best solution.

If the 30 GSM material already satisfies the customer's tensile requirements, moving to 40 GSM may simply increase cost and material consumption.

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4. Does Higher GSM Always Mean Thicker Spunbond Fabric?

Generally, increasing GSM tends to increase fabric thickness, but GSM and thickness are not the same specification.

This distinction is important.

GSM measures:

Mass per unit area

Thickness measures:

The physical depth of the fabric

Two fabrics can have similar GSM but different thickness because of differences in:

• Filament structure

• Web formation

• Bonding

• Calender pressure

• Compression

• Material density

For example:

Property	Lower GSM	Higher GSM
Material mass/m²	Lower	Higher
Typical thickness	Lower	Higher
Coverage	Lower	Higher
Opacity	Usually lower	Usually higher
Material consumption	Lower	Higher
Cost/m²	Usually lower	Usually higher

But the relationship is not perfectly linear.

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5. GSM and Fabric Hand Feel

The selected GSM also affects how the fabric feels and behaves during converting.

Low-GSM spunbond can feel:

• Lightweight

• Soft

• Flexible

• More breathable

• Easier to fold

Higher-GSM material can feel:

• Fuller

• More substantial

• More rigid, depending on bonding

• More durable

• More opaque

However, GSM alone does not determine softness.

For example, a 40 GSM fabric manufactured with a particular bonding structure can feel very different from another 40 GSM fabric.

This is why buyers should request physical samples rather than approving material solely from a GSM specification.

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6. How GSM Affects Air Permeability

Increasing GSM generally adds more material to the fabric structure.

As a result, air may have more resistance passing through the web.

However, air permeability is affected by more than GSM.

Important variables include:

• Fiber diameter

• Web density

• Pore structure

• Bonding pattern

• Calender conditions

• Fabric thickness

• Finishing treatment

Therefore, a buyer should not specify:

"I need 30 GSM because I need high air permeability."

A better specification is:

"I need approximately 30 GSM with an air permeability suitable for my application."

The second approach gives the supplier a measurable performance target.

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7. GSM and Opacity

GSM can have a major impact on visual coverage.

In general:

Higher GSM → more material per unit area → greater coverage and opacity

This is particularly relevant for:

• Shopping bags

• Packaging

• Furniture covers

• Mattress materials

• Agricultural covers

• Protective covers

• Certain medical and hygiene applications

For example, if a customer wants a nonwoven shopping bag that looks too transparent at 20 GSM, increasing to 30 or 40 GSM may improve coverage.

But opacity can also be affected by:

• Polymer color

• Pigment concentration

• Fiber diameter

• Web uniformity

• Fabric structure

Therefore, GSM should be considered together with the desired visual appearance.

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8. GSM and Cost: The Most Important Procurement Relationship

For B2B buyers, one of the most important effects of GSM is its relationship with material cost.

Suppose the price of PP spunbond fabric is:

$1.20/kg

Consider two GSM options:

20 GSM

One square meter weighs:

20 g = 0.020 kg

Estimated material cost per square meter:

0.020 × $1.20 = $0.024/m²

40 GSM

One square meter weighs:

40 g = 0.040 kg

Estimated material cost:

0.040 × $1.20 = $0.048/m²

The 40 GSM fabric contains twice as much material per square meter.

Therefore, even if the supplier's price per kilogram remains exactly the same, the material cost per square meter approximately doubles.

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9. GSM vs Cost per Square Meter

This is one of the most useful calculations for nonwoven buyers.

The basic formula is:

Cost per m² = GSM ÷ 1000 × Price per kg

For example:

GSM	Price/kg	Approx. Cost/m²
15 GSM	$1.20/kg	$0.018
20 GSM	$1.20/kg	$0.024
30 GSM	$1.20/kg	$0.036
40 GSM	$1.20/kg	$0.048
50 GSM	$1.20/kg	$0.060
70 GSM	$1.20/kg	$0.084
100 GSM	$1.20/kg	$0.120

These figures are illustrative.

Actual supplier pricing depends on:

• PP resin cost

• Additives

• Color

• Fabric structure

• Order quantity

• Roll width

• Production efficiency

• Packaging

• Freight

• Market conditions

But the calculation demonstrates an important procurement principle:

A cheaper price per kilogram does not necessarily mean a cheaper finished product.

The GSM must be considered.

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10. Why Cost per Square Meter Is Often More Useful Than Cost per Kilogram

Suppose Supplier A offers:

$1.15/kg at 30 GSM

Supplier B offers:

$1.10/kg at 35 GSM

At first glance, Supplier B looks cheaper.

But the cost per square meter tells a different story.

Supplier A

30 ÷ 1000 × $1.15

= $0.0345/m²

Supplier B

35 ÷ 1000 × $1.10

= $0.0385/m²

Supplier B has a lower price per kilogram but a higher material cost per square meter.

This is why professional procurement teams should compare suppliers using the same GSM, width, specifications and performance requirements.

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11. How GSM Affects Material Consumption

GSM directly affects the amount of fabric required to cover a given area.

Consider an application requiring:

100,000 m² of fabric

At 20 GSM:

100,000 × 20 g = 2,000,000 g

= 2,000 kg

At 40 GSM:

100,000 × 40 g = 4,000 kg

The 40 GSM material requires approximately twice the fabric mass for the same surface area.

This difference becomes significant for large-volume manufacturers.

For a company purchasing hundreds of thousands or millions of square meters, GSM optimization can have a major effect on:

• Material cost

• Inventory

• Container loading

• Transportation cost

• Finished-product economics

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12. GSM and Roll Length

GSM also affects how much fabric can be supplied by weight.

The approximate formula is:

Roll Length = Roll Weight ÷ (GSM × Roll Width)

If a roll weighs 100 kg and the fabric width is 2 meters:

20 GSM

Roll length:

100 ÷ (0.020 × 2)

= 2,500 meters

40 GSM

Roll length:

100 ÷ (0.040 × 2)

= 1,250 meters

The heavier fabric provides approximately half the linear length at the same roll weight and width.

This is important for buyers purchasing by:

• Roll

• Kilogram

• Square meter

• Linear meter

These purchasing units are not interchangeable without considering GSM and width.

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13. Why GSM Selection Should Start With the Application

A common procurement mistake is to start with:

"What GSM do you sell?"

A better question is:

"What performance does my application require?"

The correct GSM depends on what the material needs to do.

For example:

Application	GSM considerations
Lightweight packaging	Lower GSM may be sufficient
Shopping bags	Depends on bag size, load and construction
Furniture fabric	Medium to higher GSM may be required
Mattress components	Depends on layer function
Agriculture	Depends on crop, climate and protection function
Medical/hygiene	Depends on barrier and comfort requirements
Protective covers	Depends on strength and coverage
Filtration support layers	Depends on permeability and structure

There is no single "best" spunbond nonwoven GSM.

There is only a GSM that is appropriate—or inappropriate—for a specific application.

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14. Typical GSM Selection by Application

The following table should be treated as a starting point rather than a universal specification.

Application	Common GSM direction	Main considerations
Lightweight packaging	Low	Weight, flexibility, cost
Nonwoven bags	Medium	Tensile, tear, handle load
Agricultural fabric	Low–medium	UV, strength, permeability
Furniture/interlining	Medium	Coverage, strength, hand feel
Mattress materials	Medium	Strength, softness, structure
Protective covers	Medium–high	Coverage, durability
Industrial materials	Medium–high	Tensile and dimensional stability

The final GSM should be confirmed through actual application testing.

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15. 20 GSM vs 30 GSM vs 40 GSM: What Changes?

This is one of the most practical comparisons for buyers.

Property	20 GSM	30 GSM	40 GSM
Material consumption	Low	Medium	High
Cost/m²	Low	Medium	High
Typical thickness	Lower	Medium	Higher
Coverage	Lower	Better	Better
Opacity	Lower	Medium	Higher
Potential strength	Lower	Higher	Higher
Flexibility	High	Medium-high	Medium
Air permeability	Often higher	Medium	Often lower
Heavy-load suitability	Limited	Moderate	Better
Shipping weight/m²	Low	Medium	High

But this table should not be interpreted as saying every 40 GSM fabric is stronger than every 30 GSM fabric.

Manufacturing quality matters.

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16. GSM Is Not the Same as Strength

This distinction is critical for purchasing.

Imagine two suppliers offer:

Supplier A

30 GSM
MD tensile: 80 N/5 cm

Supplier B

40 GSM
MD tensile: 75 N/5 cm

Supplier B sells the heavier material but delivers lower MD tensile under the specified test conditions.

What does this tell us?

It shows that:

More GSM does not automatically equal better manufacturing performance.

The additional material may not be efficiently converted into useful mechanical performance.

Therefore, buyers should evaluate:

GSM + tensile strength + elongation + thickness + application requirements

rather than GSM alone.

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17. GSM and MD/CD Balance

Spunbond fabrics are anisotropic materials.

That means their mechanical properties can differ depending on direction.

Two important directions are:

MD — Machine Direction

The direction in which the web travels through the production line.

CD — Cross Direction

The direction across the machine width.

A buyer may therefore receive a specification such as:

Parameter	Specification
GSM	30 g/m²
MD tensile	≥ X N/5 cm
CD tensile	≥ X N/5 cm
MD elongation	≥ X%
CD elongation	≥ X%

This provides a much more complete description than simply stating:

30 GSM spunbond.

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18. Why Two 30 GSM Spunbond Fabrics Can Perform Differently

Suppose two factories both produce:

30 GSM PP spunbond nonwoven fabric

Their finished products can still differ because of differences in:

Polymer

Different PP grades can behave differently during processing.

Filament Formation

Filament diameter and uniformity affect web structure.

Drawing

Drawing conditions influence molecular orientation and mechanical properties.

Web Formation

How filaments are distributed affects uniformity.

Thermal Bonding

Bonding temperature, pressure and pattern influence fabric strength and flexibility.

Production Control

Stable process conditions improve consistency from roll to roll.

Therefore:

30 GSM is a starting specification, not a complete product specification.

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19. How GSM Affects Procurement Decisions

A professional RFQ should not simply say:

"Please quote 30 GSM spunbond."

A better RFQ contains several parameters.

For example:

Product: PP spunbond nonwoven fabric
GSM: 30 g/m²
Width: 1.6 m
Color: White
Treatment: Hydrophobic
MD tensile: Required value
CD tensile: Required value
Roll length: Required value or tolerance
Core diameter: Required specification
Application: Agricultural cover
UV requirement: Required performance
Packaging: Export standard

This allows suppliers to quote a comparable product.

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20. GSM Tolerance Should Be Discussed Before Bulk Production

Buyers should clarify:

• Target GSM

• Acceptable GSM tolerance

• Testing method

• Sampling location

• Roll-to-roll consistency

• Whether the tolerance applies to average GSM or individual measurements

This is especially important when the material is used in high-speed converting equipment.

Small differences in fabric weight can affect:

• Feeding tension

• Cutting

• Sewing

• Heat sealing

• Lamination

• Printing

• Finished-product weight

For automated production, consistency can be more valuable than simply achieving a low nominal GSM.

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21. How to Test Spunbond Nonwoven GSM

A basic GSM test requires:

1. Cutting a sample of known area.

2. Conditioning the sample where appropriate.

3. Weighing the sample accurately.

4. Calculating mass per unit area.

For example, if a 10 cm × 10 cm sample weighs 0.30 g:

Sample area:

0.10 × 0.10 = 0.01 m²

GSM:

0.30 ÷ 0.01 = 30 g/m²

A larger and properly distributed sampling plan provides a better picture of production consistency.

For factory QC, testing should not rely on a single piece cut from one location.

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22. How Buyers Should Compare Different GSM Offers

Imagine you receive three quotations:

Supplier	GSM	Price/kg	Width	Application Performance
A	25	$1.20	1.6 m	Pass
B	30	$1.15	1.6 m	Pass
C	35	$1.10	1.6 m	Pass

Do not immediately choose Supplier C.

First calculate:

Cost/m² = GSM ÷ 1000 × Price/kg

Supplier A:

25 × 1.20 ÷ 1000 = $0.030/m²

Supplier B:

30 × 1.15 ÷ 1000 = $0.0345/m²

Supplier C:

35 × 1.10 ÷ 1000 = $0.0385/m²

Supplier A has the lowest material cost per square meter.

But that still does not automatically make Supplier A the best choice.

The real question is:

Which supplier provides the lowest total cost while meeting the required performance?

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23. The Lowest GSM Is Not Always the Lowest Cost

Reducing GSM can reduce material cost.

But excessive GSM reduction may create new costs.

For example, a 20 GSM fabric may be cheaper than 30 GSM, but if it:

• Breaks during production

• Requires slower machine speeds

• Produces more defective bags

• Has insufficient tensile strength

• Requires additional layers

• Causes customer complaints

the apparent material saving may disappear.

This is why professional procurement should focus on:

Cost per usable finished product

rather than simply:

Cost per kilogram of fabric

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24. GSM Optimization: The Better Procurement Strategy

The ideal approach is not:

"Buy the lowest GSM."

It is:

"Use the lowest GSM that consistently meets the required performance."

This is a much more useful optimization principle.

For example:

If 25 GSM passes all application tests, there may be no economic reason to use 35 GSM.

If 25 GSM fails tensile requirements, moving to 30 GSM may be justified.

If 30 GSM still fails, the buyer may need:

• Higher GSM

• Different polymer grade

• Different bonding structure

• Different spunbond construction

• Additional treatment

• A multilayer structure

This approach prevents over-specification.

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25. GSM vs SSS and SMS Structures

GSM should also be evaluated differently depending on the fabric structure.

A simple spunbond fabric may consist primarily of a spunbond layer.

SSS contains multiple spunbond layers.

SMS combines:

Spunbond + Meltblown + Spunbond

The total GSM of a multilayer fabric is distributed among its component layers.

Therefore, saying:

"I need 40 GSM"

does not completely define an SMS material.

A buyer may need to specify:

• Total GSM

• Spunbond layer structure

• Meltblown layer characteristics

• Filtration requirements

• Barrier requirements

• Tensile requirements

This is another reason why GSM should never be treated as the only technical specification.

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26. How GSM Affects Shipping and Logistics

For international B2B purchases, GSM can influence logistics economics.

For a fixed surface area:

Higher GSM = higher shipment weight

For example:

1,000,000 m² at 20 GSM:

20,000 kg

At 40 GSM:

40,000 kg

The second option requires approximately twice the material weight for the same surface area.

This can affect:

• Container utilization

• Freight cost

• Warehouse requirements

• Inventory carrying cost

• Import cost

For large-volume buyers, GSM optimization should therefore be considered together with logistics.

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27. GSM and Finished Product Economics

The fabric is often only one component of the final product.

Consider a manufacturer producing nonwoven bags.

The actual economics may depend on:

Fabric GSM → fabric cost → cutting efficiency → sewing/heat sealing → scrap → finished bag weight → shipping → selling price

Increasing GSM may improve:

• Strength

• Appearance

• Handle load

• Customer perception

But it also increases:

• Fabric consumption

• Finished-product weight

• Material cost

• Potential shipping cost

Therefore, the best GSM is a balance between performance and economics.

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28. A Practical GSM Selection Framework for Buyers

Before selecting a GSM, answer these seven questions:

1. What is the application?

Agriculture? Packaging? Furniture? Medical? Industrial?

2. What mechanical load will the fabric experience?

Static load, pulling, tearing, sewing, folding or abrasion?

3. What coverage is required?

Does the fabric need high opacity?

4. What air permeability is required?

Does the application require the material to breathe?

5. What processing method will be used?

Printing, sewing, lamination, cutting, ultrasonic welding or heat sealing?

6. What is the target cost?

Is the buyer optimizing cost per kilogram, square meter or finished product?

7. What quality consistency is required?

Does the material run on automated high-speed equipment?

These questions will usually provide a better GSM specification than choosing a number based solely on what is commonly sold in the market.

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29. Common Buyer Mistakes When Choosing Spunbond GSM

Mistake 1: Choosing the highest GSM

Higher GSM can improve some properties, but it also increases material consumption.

Mistake 2: Choosing the lowest GSM

Lower GSM reduces cost, but insufficient strength can create production and quality problems.

Mistake 3: Comparing price/kg only

Price/kg does not tell you the true cost per square meter.

Mistake 4: Ignoring width

Two suppliers offering the same GSM but different widths can have different economics for the finished product.

Mistake 5: Ignoring MD/CD tensile

GSM alone does not describe mechanical performance.

Mistake 6: Approving based only on a sample

A good sample is not enough. Bulk-production consistency must also be evaluated.

Mistake 7: Changing GSM without testing the finished product

A change from 30 GSM to 25 GSM may look small on paper but can affect converting and final performance.

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30. What Should Be Included in a Spunbond GSM Specification?

For a serious B2B purchase, a specification sheet can include:

Parameter	Example
Material	PP spunbond
GSM	30 g/m²
GSM tolerance	Agreed tolerance
Width	1.6 m
Color	White
MD tensile	Specified minimum
CD tensile	Specified minimum
MD elongation	Specified range
CD elongation	Specified range
Thickness	Specified range
Air permeability	Application-dependent
Hydrophilic/hydrophobic	Required treatment
UV stabilization	If required
Roll length	Specified
Core diameter	Specified
Packaging	Export packaging

The exact values should be determined according to the application.

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31. Spunbond Nonwoven GSM: What Should Buyers Actually Ask Suppliers?

Instead of asking only:

"What GSM do you recommend?"

ask:

"What GSM do you recommend for my application, and what MD/CD tensile performance can you guarantee at that GSM?"

Then ask:

1. What is the actual GSM tolerance?

2. How is GSM tested?

3. What is the typical thickness?

4. What is the MD/CD tensile?

5. What is the elongation?

6. Is the fabric hydrophobic or hydrophilic?

7. Is UV stabilization available?

8. What roll widths are available?

9. What is the average roll weight?

10. Can the supplier provide a production sample?

11. Can the supplier maintain the same GSM and performance in bulk production?

These questions help move the purchasing conversation from price comparison to specification comparison.

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32. Frequently Asked Questions About Spunbond Nonwoven GSM

What does GSM mean in spunbond nonwoven fabric?

GSM means grams per square meter. It indicates the mass of the fabric per square meter and is one of the most important basic specifications for spunbond nonwoven fabric.

What is the common GSM range for spunbond nonwoven fabric?

Commercial spunbond products are available across a broad GSM range, depending on production equipment and application. Lightweight materials can be below 20 GSM, while heavier industrial materials can reach well above 100 GSM.

There is no universal GSM range that fits every application.

Does higher GSM mean stronger spunbond fabric?

Higher GSM often provides more material per square meter and can contribute to higher strength, but GSM alone does not determine tensile performance. Filament structure, polymer, web formation and thermal bonding also matter.

Does higher GSM mean thicker fabric?

Usually, higher GSM tends to increase thickness, but the relationship is not perfectly linear. Fabric density, filament structure and calendering can change thickness significantly.

Is 30 GSM better than 20 GSM?

Not necessarily. If 20 GSM already meets the application's strength, coverage and processing requirements, 30 GSM may simply increase material cost.

How do I calculate the cost per square meter?

Use:

Cost/m² = GSM ÷ 1000 × Price/kg

For example, at $1.20/kg, a 30 GSM fabric has an approximate raw-material cost of $0.036/m² before other costs.

Is spunbond fabric priced by kilogram or square meter?

Both pricing methods are used in the industry. Many suppliers quote by kilogram, but buyers should also calculate the equivalent cost per square meter because GSM directly determines the mass of each square meter.

Why do two suppliers offer the same GSM but different strength?

Because GSM only describes fabric mass per unit area. Polymer grade, filament properties, web formation, orientation and bonding conditions can produce different mechanical performance at the same GSM.

Should I choose GSM first or tensile strength first?

Start with the application's required performance. Then determine the GSM and production structure capable of achieving that performance economically.

How can I reduce spunbond fabric cost?

One effective method is to optimize GSM rather than simply negotiating the price per kilogram. If a lower GSM fabric can meet all required performance specifications, material consumption per square meter can be reduced.

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33. Final Takeaway: GSM Should Be Optimized, Not Maximized

Spunbond nonwoven GSM is one of the most important specifications in nonwoven purchasing, but it should never be evaluated by itself.

Increasing GSM generally increases the amount of polymer per square meter and can improve coverage, thickness and mechanical performance. At the same time, it increases material consumption, product weight and cost per square meter.

Reducing GSM can improve material efficiency and lower cost, but going too low can cause insufficient strength, coverage or processing performance.

The most effective procurement strategy is therefore:

Determine the required performance first, then select the lowest practical GSM that can consistently meet those requirements.

For B2B buyers, the final specification should normally combine:

GSM + GSM tolerance + MD/CD tensile + elongation + thickness + air permeability + treatment + width + roll specification + application requirements.

When comparing suppliers, do not ask only:

"What is your price per kilogram?"

Ask:

"What performance can you consistently provide at the required GSM, and what is the resulting cost per usable square meter or finished product?"

That is the more reliable way to evaluate spunbond nonwoven fabric.

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Related Spunbond Nonwoven Resources

For buyers researching spunbond nonwoven fabric, the most useful next steps are to compare:

• Spunbond fabric properties and structure

• How spunbond nonwoven fabric is manufactured

• Why polypropylene is used in spunbond production

• GSM and tensile strength

• Spunbond vs meltblown

• SSS vs SMS nonwoven structures

• How to select spunbond fabric for different applications

• How to evaluate a spunbond nonwoven supplier

A supplier's product specification should ultimately be evaluated against the buyer's actual application, required performance and total cost, rather than GSM or price alone.