2400 Tex Fiberglass Chopping Roving for Chopped Strand Mat & FRP Sheets

        2400 Tex Fiberglass Chopping Roving is an E-glass untwisted roving developed for continuous chopping processes used in the production of chopped strand mat,stitched composite reinforcements,continuous FRP sheets,and selected automotive composite components. Designed for compatibility with unsaturated polyester and vinyl ester resins,the roving provides stable chopping,good strand distribution,anti-static processing characteristics,and efficient resin wet-out for continuous composite manufacturing.The current product family includes J316,J336,J318,J320,J322L,and J326 grades,all based on 2400 tex E-glass chopping roving with approximately ±5% linear-density tolerance. J320 and J322L are specifically identified as low-odor grades for applications where reduced processing odor is an important production consideration.For chopped strand mat manufacturers,FRP sheet producers,automotive composite manufacturers,and fiberglass reinforcement converters,this product provides a dedicated chopping-roving solution rather than a general-purpose direct roving.

Fiberglass Chopping Roving Specifications

Key Advantages of Fiberglass Chopping Roving

1. Specifically Designed for Chopping Processes

This roving is developed for continuous fiberglass chopping rather than weaving,pultrusion,or filament winding.

During chopping,the roving must pass continuously through feeding and cutting equipment before the chopped strands are distributed onto a moving forming surface.

Important processing characteristics include:

• Stable chopping

• Good strand separation

• Controlled strand distribution

• Low static buildup

• Smooth roving feeding

• Stable continuous operation

These characteristics are particularly important for chopped strand mat and continuous FRP sheet production.

2. Stable 2400 Tex Linear Density

All currently listed grades use a nominal linear density of 2400 tex.

Stable linear density helps manufacturers maintain more consistent:

• Glass-fiber input

• Chopped strand weight

• Production rate

• Fiber distribution

• Resin demand

• Finished reinforcement weight

The current specification lists approximately ±5% linear-density deviation.

3. Good Chopping Performance

Chopping roving must separate cleanly when cut at production speed.

Suitable strand integrity can support:

• Clean cutting

• Reduced incomplete cuts

• Stable chopped strand length

• More uniform fiber distribution

• Reduced processing interruption

Actual chopping performance depends on cutter condition,blade pressure,roller condition,production speed,and environmental conditions.

4. Good Strand Distribution

After chopping,the strands must distribute across the forming area.

Stable distribution is particularly important in chopped strand mat production because uneven fiber deposition may lead to variation in mat weight and reinforcement uniformity.

Proper roving selection can help support more consistent strand spreading during forming.

5. Anti-Static Processing Characteristics

Static electricity can influence strand separation and deposition during high-speed chopping.

The current product is designed with anti-static processing characteristics intended to support stable fiber handling during:

• Chopping

• Strand distribution

• Web formation

• Continuous sheet production

Actual static behavior can also be affected by humidity,equipment grounding,production speed,and workshop conditions.

6. Compatible with UP Resin

The complete current product family lists compatibility with unsaturated polyester resin.

UP resin is widely used in fiberglass composite manufacturing for products such as:

• FRP sheets

• Automotive composite panels

• General industrial laminates

• Molded composite products

• Construction-related FRP components

7. Compatible with Vinyl Ester Resin

All current grades also list vinyl ester resin compatibility.

VE systems may be selected where manufacturers require different chemical resistance,mechanical performance,or processing characteristics compared with general-purpose polyester systems.

The exact roving-resin combination should be validated using the customer's production formulation.

8. Efficient Resin Wet-Out

Fast and uniform resin impregnation is important when chopped fiberglass becomes part of a resin-based composite system.

Suitable surface sizing can support penetration of UP and VE resin into the fiber reinforcement.

Actual wet-out speed depends on:

• Resin viscosity

• Resin temperature

• Fiber loading

• Chopped strand construction

• Binder system

• Production process

• Surface sizing

• Manufacturing speed

9. Low-Odor Grade Options

J320 and J322L are specifically identified as low-odor chopping-roving grades.

These grades may be considered where manufacturers want to reduce processing odor associated with the fiberglass sizing system.

Low odor should not be interpreted as completely odor-free production because total workplace odor can also come from:

• Resin

• Styrene

• Catalysts

• Additives

• Release agents

• Other process chemicals

10. Suitable for Chopped Strand Mat Production

One of the primary uses of the product is manufacturing fiberglass chopped strand mat.

The roving is chopped into short strands and distributed randomly before being converted into a nonwoven reinforcement.

Typical CSM applications include:

• Marine composites

• FRP panels

• Tanks

• Sanitary products

• Automotive parts

• Industrial molded components

The final chopped strand mat properties also depend on strand length,binder,areal weight,and mat-manufacturing conditions.

11. Suitable for Continuous FRP Sheet Production

The roving can also be used in continuous composite sheet manufacturing.

In this process,chopped fiberglass is distributed into a resin system as part of a continuous panel or sheet production line.

Potential products include:

• Flat FRP sheets

• Corrugated FRP sheets

• Translucent composite panels

• Industrial roofing sheets

• Vehicle panels

• General-purpose composite sheets

12. Suitable for Automotive Composite Components

The original product application includes automotive products such as:

• Car roofs

• Vehicle box panels

• Composite body panels

• Interior or structural composite sheets

Actual suitability depends on the component design,resin system,mechanical requirements,surface requirements,and production method.

Technical Grades of Fiberglass Chopping Roving

J316 Fiberglass Chopping Roving

J316 is a 2400 tex E-glass untwisted roving designed for chopping applications.

Linear Density: 2400 tex

Tolerance: ±5%

Compatible Resin: UP / VE

Primary Process: Chopping

It can be evaluated for chopped strand reinforcement and continuous composite manufacturing according to the required chopping equipment and resin system.

J336 Fiberglass Chopping Roving

J336 is another 2400 tex grade designed for chopping.

Linear Density: 2400 tex

Tolerance: ±5%

Compatible Resin: UP / VE

Primary Process: Chopping

The exact differences between J316 and J336 should be confirmed according to detailed technical data and the customer's target application.

J318 Fiberglass Chopping Roving

J318 provides another option within the current E-glass chopping-roving family.

Linear Density: 2400 tex

Tolerance: ±5%

Compatible Resin: UP / VE

Primary Process: Chopping

Production trials are recommended when switching between grades on an existing chopping line.

J320 Low-Odor Fiberglass Chopping Roving

J320 is specifically identified as a low-odor grade.

Linear Density: 2400 tex

Tolerance: ±5%

Compatible Resin: UP / VE

Configuration: 20 Bundles

Primary Process: Chopping

It can be considered for manufacturing environments where reducing odor associated with the fiberglass roving sizing is an important production objective.

J322L Low-Odor Fiberglass Chopping Roving

J322L is another dedicated low-odor option.

Linear Density: 2400 tex

Tolerance: ±5%

Compatible Resin: UP / VE

Configuration: 16 Bundles

Primary Process: Chopping

The 16-bundle configuration provides another processing option depending on the customer's cutter and strand-distribution system.

J326(H/L) Fiberglass Chopping Roving

J326(H/L) belongs to the same 2400 tex chopping-roving family.

Linear Density: 2400 tex

Tolerance: ±5%

Compatible Resin: UP / VE

Primary Process: Chopping

The exact H/L distinction should be confirmed through the relevant technical data rather than interpreted as an unverified performance ranking.

Standard vs. Low-Odor Fiberglass Chopping Roving

J320 vs. J322L Low-Odor Chopping Roving

Important: The current public information does not provide enough verified mechanical or processing test data to state that J320 or J322L is universally superior. The choice should be based on chopping equipment,strand requirements,odor objectives,and production trials.

Fiberglass Roving for Chopped Strand Mat

Chopped strand mat production is one of the main target applications of this fiberglass roving.

During mat manufacturing,the roving is continuously chopped into short strands and distributed randomly across a moving belt.

A typical production sequence includes:

1. Roving unwinding

2. Fiber feeding

3. Continuous chopping

4. Strand distribution

5. Random web formation

6. Binder application

7. Drying or curing

8. Cooling

9. Edge trimming

10. Rolling and packaging

Consistent chopping and distribution are important for stable mat production.

Why Chopping Quality Matters in CSM Production

Poor chopping behavior may cause:

• Long uncut strands

• Excessive short fibers

• Uneven strand distribution

• Cutter buildup

• Mat weight variation

• Production interruptions

• Uneven reinforcement structure

A dedicated chopping roving is therefore more suitable than using a general weaving or winding roving in a CSM production line.

Fiberglass Roving for Stitched Mat & Composite Fabrics

The product can also serve as a raw fiberglass source for selected stitched and composite reinforcement manufacturing processes.

Potential reinforcement products include:

• Stitched chopped strand mat

• Combination mats

• Sewn reinforcement structures

• Composite fiberglass fabrics

• Application-specific reinforcement layers

The required chopping length,stitching construction,and reinforcement architecture depend on the finished fabric design.

Fiberglass Chopping Roving for FRP Sheets

Continuous FRP sheet production is another key application.

Chopped fiberglass can be incorporated into polyester or vinyl ester resin systems to reinforce continuous sheets and panels.

Potential applications include:

• FRP flat sheets

• Corrugated fiberglass sheets

• Roofing panels

• Wall panels

• Industrial panels

• Vehicle panels

• Translucent composite sheets

The final panel performance depends on glass content,resin formulation,sheet thickness,cure conditions,and reinforcement distribution.

Fiberglass Roving for Translucent FRP Sheets

The source product information specifically highlights translucent performance as a potential characteristic of finished composites.

Fiberglass chopped reinforcement can be used in translucent FRP sheets when combined with an appropriate resin system and manufacturing process.

Final optical appearance depends on:

• Resin clarity

• Glass distribution

• Fiber content

• Pigment or additive system

• Sheet thickness

• Surface finish

• Cure conditions

The roving alone does not determine the final light-transmission value.

Fiberglass Chopping Roving for Automotive Components

Continuous chopped-fiber production can also support automotive and transportation composite manufacturing.

Potential products include:

• Vehicle roof panels

• Truck or vehicle box panels

• Composite body panels

• Interior composite panels

• Transportation equipment components

For automotive applications,finished components should be evaluated according to the required mechanical,thermal,flammability,weathering,and dimensional standards.

Chopping Roving vs. Direct Roving for Weaving

Chopping Roving vs. Pultrusion Roving

Chopping Roving vs. Filament Winding Roving

Understanding 2400 Tex Fiberglass Roving

Tex describes linear density.

1 tex = 1 gram per 1,000 meters.

Therefore:

2400 tex = approximately 2400 grams per 1,000 meters of roving.

For chopping applications,stable tex is important because it influences the mass of fiberglass supplied to the chopping system.

However,2400 tex alone does not determine:

• Chopped strand length

• Mat weight

• Finished composite strength

• Resin content

• Sheet thickness

• Production speed

These parameters depend on the complete manufacturing process.

Importance of Chopped Strand Length

The required chopped strand length depends on the reinforcement product being manufactured.

Strand length can influence:

• Fiber distribution

• Mat handling

• Resin wet-out

• Mechanical performance

• Surface appearance

• Production stability

The correct cutter setup should be selected according to the finished product specification.

Importance of Anti-Static Performance

Static buildup can affect fiberglass strands after cutting.

Excessive static may cause fibers to:

• Cling to equipment

• Cluster together

• Distribute unevenly

• Accumulate around the chopper

• Interfere with mat formation

Anti-static roving characteristics can therefore support more stable high-speed chopping.

Workshop humidity and equipment grounding should also be properly controlled.

Importance of Resin Wet-Out

Fast resin impregnation is particularly important in FRP sheet and panel production.

The fiber sizing must interact effectively with the selected resin system.

Insufficient wet-out may contribute to:

• Dry fiber areas

• Trapped air

• Uneven appearance

• Weak fiber-resin interfaces

• Inconsistent laminate structure

The resin viscosity,temperature,glass content,and processing speed should be optimized together.

UP Resin vs. Vinyl Ester Resin

How to Choose Fiberglass Chopping Roving

Selection Guide by Application

Low-Odor Fiberglass Roving Considerations

Low-odor chopping roving can help reduce odor originating from the fiberglass sizing formulation.

However,the complete FRP manufacturing process may contain other odor sources.

These may include:

• Styrene-containing resin

• Catalysts

• Accelerators

• Solvents

• Additives

• Cleaning chemicals

Therefore,a low-odor roving should be treated as one part of an overall workplace odor-control strategy rather than a guarantee of odor-free production.

Custom Fiberglass Chopping Roving Options

Quality Control

Stable chopping-roving quality is important for continuous CSM and FRP sheet production.

Important control items include:

• Glass type

• Linear density

• Tex tolerance

• Sizing consistency

• Bundle integrity

• Chopping behavior

• Strand separation

• Static characteristics

• Fiber distribution

• Resin wet-out

• Roving unwinding

• Package condition

• Moisture protection

• Batch identification

For low-odor grades,the applicable product grade should also be confirmed before shipment and production.

Packaging & Shipping

Storage Guidelines

1. Store in a Dry Indoor Environment

Fiberglass chopping roving should be stored in a dry,well-ventilated,and rain-protected indoor warehouse.

2. Recommended Storage Temperature

The current recommended storage temperature is:

5°C to 35°C

3. Recommended Relative Humidity

The current recommended relative humidity is:

35%–65% RH

4. Protect Against Direct Sunlight

Avoid prolonged exposure to direct sunlight and strong heat sources.

This helps protect both the roving and packaging materials.

5. Keep Original Packaging Intact

Keep the roving in its original unopened packaging until production.

This helps protect against:

• Moisture

• Dust

• Oil

• Contamination

• Packaging damage

6. Recommended Shelf Life

For best processing performance,the current product guidance recommends using the roving within approximately 12 months from the production date.

7. Store Pallets on a Flat Surface

Pallets should be placed on a clean,flat,and stable surface and isolated from direct floor moisture.

8. Avoid Heavy Loads on Pallets

Do not place heavy objects on top of roving pallets because excessive loading may damage or deform the packages.

9. Pallet Stacking

The current packaging recommendation is a maximum of approximately 2 pallets high.

Frequently Asked Questions About Fiberglass Chopping Roving

1. What is fiberglass chopping roving?

Fiberglass chopping roving is a continuous glass-fiber bundle specifically designed to be cut into shorter strands during composite reinforcement manufacturing.

It is commonly used to manufacture chopped strand mat,FRP sheets,stitched reinforcements,and other chopped-fiber products.

2. Is this the same as fiberglass direct roving?

It belongs to the continuous fiberglass roving family,but its sizing and processing characteristics are specifically designed for chopping.

A weaving,pultrusion,or filament-winding roving should not automatically be assumed to provide the same chopping performance.

3. What is the linear density of this product?

The current grades are specified at 2400 tex.

4. What is the tex tolerance?

The current linear-density tolerance is approximately ±5%.

5. Which grades are available?

Current models include:

J316,J336,J318,J320,J322L,and J326(H/L).

6. Which grades are low odor?

The current low-odor grades are:

J320 – Low Odor / 20 Bundles

J322L – Low Odor / 16 Bundles

7. Are all grades low odor?

No.

Low odor is specifically identified for J320 and J322L. It should not automatically be applied to all other grades.

8. What does low odor mean?

It refers to a roving formulation designed to reduce odor associated with the fiberglass sizing system during processing.

It does not mean the complete FRP production process will be odor-free.

9. Can this roving be used to make chopped strand mat?

Yes.

Chopped strand mat is one of the primary applications.

10. Can it be used for fiberglass stitched mat?

Yes.

The source product positioning includes stitched and sewn composite reinforcement applications.

The exact chopping and stitching process should be matched to the finished reinforcement design.

11. Can this roving be used for continuous FRP sheets?

Yes.

Continuous composite sheets are one of the main listed applications.

12. Can it be used for translucent FRP sheets?

It can be used in appropriate translucent fiberglass sheet systems.

Final translucency depends on resin clarity,glass distribution,fiber content,additives,sheet thickness,and manufacturing conditions.

13. Can it be used for automotive composite parts?

Yes.

Potential applications include car roofs,vehicle box panels,and other fiberglass composite panels.

14. Which resins are compatible with this product?

The current product specification lists:

Unsaturated Polyester (UP)

and

Vinyl Ester (VE).

15. Can it be used with epoxy resin?

Epoxy is not listed as the primary compatible resin for this product family.

For an epoxy process,a roving specifically designed and validated for the intended epoxy formulation should be selected.

16. Why is anti-static performance important?

Static electricity can cause chopped fiberglass to cling to machinery or distribute unevenly.

Anti-static properties help support more controlled strand handling and deposition.

17. Why is chopping performance important?

Stable chopping helps produce consistent strand lengths and reduces problems such as incomplete cutting,fiber buildup,and unstable production.

18. Why is resin wet-out important?

Fast wet-out helps resin penetrate the chopped fiberglass reinforcement.

This is important for producing consistent FRP sheets,mats,and molded composites.

19. Does fast wet-out guarantee a void-free laminate?

No.

Void content also depends on resin viscosity,air removal,glass content,production speed,lamination method,and process control.

20. What is the difference between J320 and J322L?

Both are 2400 tex low-odor chopping grades compatible with UP and VE resin.

The currently listed configuration is:

J320: 20 bundles

J322L: 16 bundles

Final selection should be based on the customer's chopping equipment and production requirements.

21. What is the difference between J316,J336,and J318?

The current public specification identifies all three as 2400 tex UP/VE-compatible chopping grades but does not provide enough verified detail to rank their performance.

The appropriate grade should be confirmed according to the customer's process and technical requirements.

22. What spool weights are available?

Typical spool weight is approximately 15–18 kg.

The source also lists customized packages up to approximately 24 kg per spool.

23. How many spools are packed on one pallet?

Typical pallet configurations are approximately 48 or 64 spools,depending on packaging requirements.

24. How should fiberglass chopping roving be stored?

Recommended storage conditions are approximately:

5°C to 35°C

35%–65% relative humidity

Keep the product dry and in its original packaging until use.

25. What is the recommended shelf life?

For best performance,the current recommendation is to use the product within approximately 12 months from the date of production.

26. How high can the pallets be stacked?

The current packaging guidance recommends a maximum of approximately 2 pallets high.

27. Can single-spool cartons be supplied?

Yes.

Single-spool carton packaging is listed as an available option for selected small-order requirements.

28. Can the packaging be customized?

Yes.

Spool weight,pallet configuration,and other packaging requirements can be discussed according to order quantity and shipping requirements.

29. How do I choose the correct chopping-roving grade?

Please consider:

• Finished reinforcement product

• Chopping equipment

• Target strand length

• UP or VE resin

• Production speed

• Static-control requirement

• Low-odor requirement

• Spool configuration

• Required output

A production trial is recommended when changing roving grades.

30. What information should I provide when requesting a quotation?

Please provide:

• Required model if known

• Finished product

• Required tex

• Resin system

• Chopping process

• Low-odor requirement

• Spool weight

• Required quantity

• Packaging requirement

• Destination country or port

Why Choose WGSC Composite?

WGSC Composite supplies fiberglass roving,chopped strand mat,fiberglass fabrics,carbon fiber materials,and other reinforcement products for industrial composite manufacturing.

The J316,J336,J318,J320,J322L,and J326 fiberglass chopping-roving series is designed for continuous chopping applications,with a current nominal linear density of 2400 tex and compatibility with unsaturated polyester and vinyl ester resin systems.

For chopped strand mat manufacturers,FRP sheet factories,automotive composite producers,and fiberglass reinforcement converters,we can evaluate grade selection,low-odor requirements,processing conditions,spool configuration,packaging,and application-specific requirements.

Whether you are sourcing fiberglass roving for chopped strand mat,2400 tex chopping roving,low-odor fiberglass roving,fiberglass roving for FRP sheets,UP-compatible chopping roving,VE-compatible chopping roving,or J320/J322L low-odor roving,we can provide specification and quotation support according to your manufacturing process.

Request a Quote

Looking for a fiberglass chopping roving supplier for chopped strand mat,continuous FRP sheets,or automotive composite production?

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Product Application · Roving Grade · Tex · Resin System · Low-Odor Requirement · Chopping Process · Spool Weight · Quantity · Packaging · Destination

Contact WGSC Composite for J316,J336,J318,J320,J322L,J326,and custom fiberglass chopping-roving requirements.