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Glass Fiber Knitted Felt (Stitched Felt / Glass Fiber Nonwoven Mat)
Glass Fiber Knitted Felt is a nonwoven reinforcement material made by mechanically knitting chopped glass fibers into a soft yet structurally stable fabric using a polyester knitting yarn. Unlike traditional chopped strand mats (CSM), which rely on chemical binders to hold the fibers together, knitted felt is binder-free, offering excellent flexibility, drapability, and enhanced compatibility with various resin systems such as polyester, vinyl ester, epoxy, and phenolic.
Product performance introduction
Knitted felt is composed of short-length E-glass fibers (usually 50 mm or 100 mm) arranged in a random orientation and knitted in a lightweight, open-loop structure, providing uniform fiber distribution, excellent conformability to complex molds, and fast resin wet-out. It is especially favored for hand lay-up, vacuum infusion, RTM, and spray-up applications in marine, automotive, building, and industrial components.
🧪 Typical Technical Data (TDS Style)
| Parameter | Typical Values |
|---|---|
| Product Name | Glass Fiber Knitted Felt |
| Fiber Type | E-glass (alkali-free); optional AR-glass |
| Manufacturing Method | Mechanically knitted using polyester yarn |
| Fiber Length | 50 mm or 100 mm (customizable) |
| Density / Weight | 200 – 1000 gsm (standard); 1200+ gsm optional |
| Thickness | 2.0 – 10 mm (varies with gsm) |
| Knitting Thread | Polyester (standard); flame-retardant optional |
| Loss on Ignition (LOI) | 1.0 – 1.8% (mainly from knitting yarn) |
| Moisture Content | ≤ 0.2% |
| Tensile Strength | ≥ 150–250 N/50 mm (based on weight and structure) |
| Width | 1000 mm, 1270 mm, 2000 mm; customizable |
| Roll Length | 20–100 m depending on GSM and thickness |
| Color | White / Off-white |
| Core ID | 76 mm or 152 mm |
| Resin Compatibility | Polyester, Vinyl Ester, Epoxy, Phenolic Resins |
| Shelf Life | 12 months in sealed, dry storage |
✅ Key Features and Benefits
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Binder-Free Construction
Eliminates chemical binders, improving resin wet-out and environmental safety (VOC-free). -
Superior Conformability
Highly flexible and drapable; ideal for complex contours and curved mold surfaces. -
Even Fiber Distribution
Ensures mechanical consistency and optimal load transfer across the laminate. -
Excellent Resin Penetration
Open structure allows fast resin flow, minimizing dry spots and air entrapment. -
Multi-Process Compatibility
Suitable for RTM, vacuum infusion, spray-up, compression molding, and hand lay-up. -
Improved Laminate Finish
Soft surface structure reduces print-through and supports smooth finishing. -
Lightweight with Good Loft
Maintains a low weight-to-strength ratio with added insulation benefits.
🏭 Applications
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Marine: Hull interiors, deck reinforcement, liners
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Automotive: Roof panels, dashboard backings, trunk liners
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Construction: Wall panels, FRP doors, roofing sheets
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HVAC / Appliances: Acoustic panels, insulation linings
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Industrial Equipment: FRP pipes, ducts, tool handles
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Electrical: Cable trays, insulation boards, junction boxes
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Recreation: Playground panels, boat seating, spa shells
📦 Packaging & Handling
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Rolled and wrapped in PE film or kraft paper
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Palletized or boxed depending on customer requirement
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Label includes: weight, dimensions, batch number, production date
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Store in a dry, shaded area; avoid moisture and direct sunlight
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Handle with care to prevent fiber breakage and contamination
🏅 Compliance & Standards
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ASTM D579 / D3530 – Glass fiber physical testing
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ISO 2559 / ISO 2797 – Thickness and weight tests
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RoHS, REACH – Non-toxic, environmentally compliant
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Fire-resistant and low-smoke versions available upon request
Glass Fiber Knitted Felt (Stitched Felt / Glass Fiber Nonwoven Mat)
Series :
Fiberglass Chopped strand Mat >application
Chemistry and Chemical / Infrastructure / Marine / Petrochemical / Building and Construction
FAQ
Q :
Are you a factory? Where are you located?
A :
We are manufacturer of FRP grating and pultruded profiles, trader of FRP yarn materials. We are the largest distributor of China Jushi Co. We also sell products of several FRP yarn manufacturers. We are in Anhui, China.
Q :
What information is recommended for the inquiry？
A :
1. Which tex you need? 2. What the application you use it for? Or the tecnologh, is weaving, pultrusion or winding? 3. How many quantity do you need? 4. What resin do you combined for? Polyester resin or epoxy resin? 5. Do you need FOB or CIF price, if CIF, please tell us your port.
Q :
What's the MOQ?
A :
Usually 1 Ton
Q :
Package & Shipping
A :
Normal package:carton(Incuded in the unite price) Special Packge: need to charge according the actual situation. Normal shipping :your nominated Freight forwarding.
Q :
When can I offer?
A :
We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price pls call us or tell us in your email , so that we can reply you priority.
Q :
How do you charge the sample fees?
A :
If you need a samples from our stock, we can provide to you for free, but you need to pay the freight charge.If you need a special size, We will charge the sample making fee which is refundable when you place an order.
Q :
What's your delivery time for production?
A :
If we have stock , can delivery in 7 days ; if without the stock, need 7~15 days !
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