Single Warp Fiberglass Fabric (UD / Unidirectional Fabric)

Single Warp Fiberglass Fabric (UD / Unidirectional Fabric)

Setting the global standard for directional structural reinforcement, POLYMER operates as a premier unidirectional fiberglass fabric manufacturer. Our advanced single warp fiberglass fabric (widely recognized as high-performance UD Fabric) is meticulously engineered by aligning continuous direct rovings strictly parallel in the 0° direction, delivering maximum longitudinal strength without the added weight of transverse fibers.

Securely bound by non-structural polyester stitching, this zero-crimp 0 degree unidirectional glass fabric completely eliminates internal fiber friction to provide unparalleled fatigue resistance. Serving as the ultimate fiberglass UD fabric for pultrusion, heavy-duty wind turbine blades, and marine boat building, it guarantees exceptionally fast wet-out and flawless compatibility with Epoxy, Vinyl Ester, and Polyester resin systems.

Maximum Longitudinal Strength

Zero-Crimp Architecture

Ultimate Fatigue Resistance

Optimized for Pultrusion

High Strength-to-Weight Ratio

Model:PLM336
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Single Warp Fiberglass Fabric (UD Fabric) Overview

Setting the global standard for directional structural reinforcement, POLYMER's single warp fiberglass fabric—universally recognized in the composites industry as high-performance Unidirectional Fabric (UD Fabric)—is the ultimate solution for extreme load-bearing applications. As a premier unidirectional fiberglass fabric manufacturer, we meticulously construct this material by aligning continuous direct rovings strictly parallel in the 0° (longitudinal) direction, locking them securely in place with a fine, non-structural polyester stitching yarn.

This 0 degree unidirectional glass fabric is purposefully engineered to deliver maximum tensile strength exactly where it is needed, without the added weight of transverse fibers. Depending on your specific tooling requirements, our UD fiberglass fabric supplier capabilities allow us to customize the fabric by stitching it together with an additional layer of chopped strands or non-woven tissue. Exhibiting seamless compatibility with Polyester, VE, and Epoxy resins, it performs flawlessly in fiberglass UD fabric for pultrusion, filament winding, and advanced vacuum infusion processes.

Empowering Advanced Composite Fabrication

Whether you are manufacturing extreme-load wind turbine blades or pulling continuous architectural profiles, our engineered UD fabrics secure your structural integrity:

  • For Continuous Pultrusion Lines: Leverage our fiberglass UD fabric for pultrusion. The straight 0° rovings provide immense longitudinal stiffness, preventing tear-outs in the die and ensuring flawless, high-strength I-beams, tool handles, and insulating rods.

  • For Wind Energy & Aerospace: Deploy our unidirectional fiberglass for wind blades. The complete absence of crimp delivers ultimate fatigue resistance, forming the critical structural spars and load-bearing backbones of modern wind turbines.

  • For High-Performance Marine Hulls: Utilize our UD fiberglass fabric for boat building to reinforce the keel and stringers. It adds massive directional stiffness to luxury yachts and racing boats without adding unnecessary laminate weight.

  • For Regional Raw Material Distributors: Source directly from a verified bulk UD fiberglass fabric roll supplier. We offer weights from 336g up to 900g, customizable slit widths, and highly competitive factory-direct export pricing.

Core Performance Advantages

Maximum Strength

Maximum Longitudinal Strength

With 100% of the structural rovings aligned in the 0° direction, the fabric delivers extreme tensile strength and stiffness exactly where the load-bearing stress occurs.

Zero Crimp

Zero-Crimp Architecture

The straight fibers do not bend or interlace. This eliminates internal friction and micro-cracking, resulting in the ultimate fatigue resistance for dynamic components.

Lightweight

High Strength-to-Weight Ratio

By removing unnecessary transverse (90°) fibers, fabricators can build incredibly stiff and robust structural parts while significantly reducing the overall weight of the composite.

Customizable

Highly Customizable Structure

Can be seamlessly stitched together with chopped strand layers or polyester veils to prevent transverse splitting and improve surface finish in a single lay-up step.

General Data & Technical Specifications

CodeWeight (g/m²)0° Warp (g/m²)90° Weft (g/m²)Chopped Strands (g/m²)Polyester Tissue (g/m²)Layer(s)
PLM336336336---1
PLM400400400---1
PLM420420400---1
PLM560560560---1
PLM600600420180--2
PLM625625400-225-2
PLM625/N45670400-225453
PLM672672672---1
PLM800800672128--2
PLM900600600-300-2

* Remark: Other weights, custom slit widths, and complex combinations of chopped strands/tissues are available to order based on your custom structural requirements.

Typical Industrial Applications

Pultrusion Profiles

Pultrusion Profiles

Fiberglass UD fabric for pultrusion delivering extreme longitudinal stiffness for architectural I-beams and grating.

Wind Blades

Wind Turbine Blades

Unidirectional fiberglass for wind blades ensuring absolute fatigue resistance and strength for massive spar caps.

Boat Hulls

Marine Boat Building

UD fiberglass fabric for boat building utilized to reinforce hull stringers and keels without adding excess weight.

Chemical Tanks

Filament Winding Pipes

Heavy-duty 0° alignment fabrics drastically improving the burst strength and pressure resistance of chemical pipes.

Frequently Asked Questions (FAQ)

+ Why choose UD Fabric instead of traditional Woven Roving?

Traditional Woven Roving provides strength in both directions (0° and 90°). However, if your structural component (like a pultruded beam or a boat keel) only faces stress in one specific direction, the 90° fibers are essentially "dead weight". Our single warp fiberglass fabric places 100% of the structural glass in the exact direction of the load, delivering a significantly higher strength-to-weight ratio.

+ What is the benefit of adding a Chopped Strand layer to UD Fabric?

While pure UD fabric offers extreme longitudinal strength, it is relatively weak in the transverse direction, making it prone to longitudinal splitting under side-impacts. Our stitched unidirectional fiberglass mat (like the PLM625) solves this by stitching a chopped strand layer (e.g., 225g/m²) directly to the UD layer. This provides excellent transverse crack resistance and allows for massive thickness build-up in a single lay-up step.

+ Is this fabric suitable for high-end Epoxy infusion?

Absolutely. Because our epoxy compatible unidirectional fiberglass is held together by mechanical stitching rather than chemical binders, there is no barrier to resin flow. It wets out rapidly and thoroughly, making it highly preferred for advanced vacuum infusion and RTM processes in aerospace, wind energy, and luxury yacht building.

+ Can you custom slit the roll width for my pultrusion dies?

Yes. As a leading unidirectional fiberglass fabric manufacturer, we operate advanced slitters. We can produce custom width UD fiberglass fabric ranging precisely from 200mm up to 2600mm. This ensures the fabric perfectly matches your pultrusion dies, entirely eliminating expensive and time-consuming edge trimming on your factory floor.

Why Partner with POLYMER?

01
OEM/ODM Customization
As a source manufacturer, we don't just sell standard rolls. We tailor formulations to match your precise composite processes.
  • Custom Slit Widths: 200mm up to 2600mm to minimize your cutting waste.

  • Variable Weights: Adjustable g/m² density based on your load-bearing requirements.

  • Complex Structures: Seamlessly stitch chopped strands or polyester veils to the UD base.

02
Strict Quality Assurance
Every batch of our fiberglass reinforcement undergoes rigorous laboratory testing before shipment to ensure zero defects.
  • Testing Metrics: Tested for longitudinal tensile strength, moisture content, and wet-out speed.

  • Consistency: Guaranteed perfectly straight 0° fiber alignment across the entire roll.

  • Traceability: Barcode tracking on every roll for full production traceability.

03
Global Shipping & Supply
We understand that uninterrupted supply is crucial for your factory. We offer flexible commercial terms to support your inventory.
  • Robust Packaging: Shrink-wrapped, carton-protected, and palletized to prevent transit damage.

  • Lead Time: Rapid turnaround for bulk container orders to major global ports.

  • Free Samples: Available for factory trial and pultrusion compatibility testing.

Ready to Optimize Your Load-Bearing Composite Production?
Contact our engineering team today for technical data sheets (TDS), current pricing, or to request a free material sample.
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Instructions for Roll Handling & Storage
Roll Size
Custom Slit Widths: The standard roll width is 1270mm. Custom slit dimensions from 200mm up to 2600mm are readily available to exactly match your continuous pultrusion dies or wind blade molds.
Packing
Packing & Palletizing: The UD fabric is securely rolled onto a firm 76mm ID paper tube to ensure the 0° fibers remain perfectly straight. It is tightly wrapped with moisture-proof plastic film, packed into cartons, and horizontally palletized.
Storage
Storage Conditions: Store indoors in a cool, dry, and water-proof environment. 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 maintain optimal resin compatibility.

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Submit your application and molding process. Our polymer engineers will provide a material selection guide and dispatch free test samples rapidly.

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