Stitch-Bonded Fiberglass Fabric (Non-Crimp Fabric) Overview

Setting the global standard for high-performance composite reinforcement, POLYMER's premium stitch-bonded fiberglass fabric—universally recognized as Non-Crimp Fabric (NCF) or multiaxial fabric—is an advanced structural textile. As a leading stitch bonded fiberglass fabric manufacturer, we meticulously engineer this material by arranging parallel layers of continuous rovings unidirectionally (typically at 0° and 90° axes), optionally combined with chopped strands, and securely locking the entire system together with high-tensile stitching threads.

Unlike traditional woven materials, this highly advanced non-crimp fiberglass fabric entirely eliminates the intersections (crimp) between warp and weft yarns. This revolutionary architecture allows fibers to lie perfectly flat, delivering optimal mechanical performance, extreme stiffness, and outstanding fatigue resistance. Featuring built-in resin flow channels created by the stitching, it acts as a remarkably fast impregnation fiberglass fabric, making it the premier choice for RTM (Resin Transfer Molding), pultrusion, and vacuum infusion processes.

Empowering Advanced Composite Fabrication

Whether you are molding massive wind turbine blades or pulling high-strength architectural profiles, our engineered NCF fabrics secure your structural integrity:

• For Wind Energy & Aerospace: Leverage our fiberglass non-crimp fabric for wind blades. The straight, uncrimped fibers provide unparalleled longitudinal stiffness and high fatigue resistance, crucial for enduring decades of dynamic cyclic loading in extreme weather.

• For Closed Mold (RTM) Operations: Deploy our highly specialized RTM process fiberglass fabric. The internal stitching structure prevents fiber wash-out under high-pressure injection, while dramatically accelerating resin flow to eliminate dry spots in complex automotive components.

• For Continuous Pultrusion Lines: Utilize our fiberglass fabric for pultrusion profiles to manufacture ultra-rigid, corrosion-resistant I-beams and grating. The unidirectional layup maximizes tensile strength exactly where the profile needs it most.

• For Marine & Auto Body Parts: Source directly from a verified bulk stitch bonded fiberglass roll supplier. We offer maximum roll widths up to an industry-leading 2600mm, reducing seam overlaps on large boat hulls and fiberglass fabric for auto body parts.

Core Performance Advantages

Non-Crimp Architecture

Fibers lie perfectly straight without interlocking crimps. Under stress, the fibers do not need to "straighten out" first, instantly delivering 100% of their tensile strength.

Ultimate Fatigue Resistance

The absence of crimps eliminates the high-stress friction points where interlaced yarns cross, drastically reducing micro-cracking during long-term cyclic loading.

Rapid Resin Flow (RTM)

The uniform stitching threads create built-in micro-channels throughout the fabric, facilitating incredibly fast and complete resin flow during closed-mold injection.

High Fiber Volume Fraction

Flat, parallel fibers pack much closer together than woven fabrics, allowing fabricators to achieve extreme fiber-to-resin ratios for ultra-lightweight, high-stiffness parts.

General Data & Technical Specifications

* Remark: The maximum roll width is 2600mm. The fabric can be custom-slit and oriented (e.g., ±45°) according to specific tooling requirements.

Typical Industrial Applications

Wind Turbine Blades

Fiberglass non-crimp fabric for wind blades delivering massive longitudinal stiffness and extreme fatigue resistance.

RTM & Infusion

RTM process fiberglass fabric ensuring rapid resin flow channels for aerospace and complex automotive components.

Pultrusion Profiles

Fiberglass fabric for pultrusion profiles providing unmatched tear resistance and straight-fiber tensile strength.

Marine Boat Hulls

Heavy-duty multiaxial fabrics utilized to lay up extremely rigid, impact-resistant hulls for high-speed luxury yachts.

Frequently Asked Questions (FAQ)

Instructions for Roll Handling & Storage

Custom Widths up to 2600mm: Our advanced knitting machines support ultra-wide formats up to 2600mm. We can precision-slit rolls to your exact closed-mold cavity dimensions, completely eliminating expensive edge-trim waste.

Packing & Palletizing: The NCF fabric is securely rolled onto a firm paper tube to prevent distortion of the delicate stitched architecture. It is tightly wrapped with moisture-proof plastic film and packed into heavy-duty cartons for horizontal pallet loading.

Storage Conditions: Store indoors in a cool, dry, and water-proof area to protect the fibers. Ideal room temperature is 15°C to 35°C with 35% to 65% humidity. Keep the fabric in its original sealed packaging until use to prevent moisture ingress and maintain rapid RTM infusion speeds.