Details
Fiberglass Woven Roving is a heavy, coarse, drapeable, high-performance bidirectional reinforcement fabric manufactured by interlacing direct glass fiber rovings (continuous, untwisted, heavy-tow yarns) on specialized looms. Characterized by its robust structure and precise fiber alignment, it provides exceptional bidirectional (warp & weft, 0°/90°) reinforcement, making it a cornerstone material in composite manufacturing. The most common weaving patterns are plain weave and twill weave, each tailored to specific processing and performance requirements.
Fiberglass Woven Roving is a primary structural reinforcement material, designed for hand lay-up and spray-up processes where creating thick, strong laminates quickly and cost-effectively is the primary objective.
Fiberglass Woven Roving exhibits excellent compatibility with a wide range of resin systems, including unsaturated polyester (UP), vinyl ester (VE), epoxy (EP), and phenolic resins, enabling versatile application across diverse industrial processes.
Identification:
Glass Type | E, ECR |
Type of Size | Silane |
Area Weight(g/m2) | 200-1600 |
Width (mm) | 50-1500 |
What are the key features of fiberglass woven roving?
High Strength-to-Weight Ratio: Provides exceptional tensile and flexural strength per unit weight.
Rapid Thickness Buildup: Significantly increases laminate thickness in fewer layers compared to lighter fabrics.
Excellent Drape & Conformability: Despite its weight, it drapes well over complex mold shapes, including double curvatures.
Fast Resin Wet-Out: The open weave structure facilitates quick and thorough resin penetration.
Cost-Effectiveness: One of the most economical forms of heavy-duty reinforcement on a per-pound basis.
Good Impact Resistance: The heavy, continuous roving construction effectively distributes impact loads.
Biaxial Reinforcement: Provides balanced strength in the 0° (warp) and 90° (weft) directions.
Product Parameter：
Product Model | Area Weight (g/m2) | Width (mm) | Moisture Content (%) | Size Content (%) |
EWR200 | 200 | 1040, 1270 | ≤0.20 | ≤0.80 |
EWR270 | 270 | 1040, 1270 | ≤0.20 | ≤0.80 |
EWR300 | 300 | 1040, 1270 | ≤0.20 | ≤0.80 |
EWR360 | 360 | 1040, 1270 | ≤0.20 | ≤0.80 |
EWR450 | 450 | 1040, 1270 | ≤0.20 | ≤0.80 |
EWR500 | 500 | 1040, 1270 | ≤0.20 | ≤0.80 |
EWR600 | 600 | 1040, 1270 | ≤0.20 | ≤0.80 |
EWR800 | 800 | 1040, 1270 | ≤0.20 | ≤0.80 |
Custom woven roving according to weight, width is available upon request.
What are the advantages and benefits of fiberglass woven roving?
High Production Efficiency: Enables lamination crews to deposit large amounts of reinforcement quickly, reducing labor time per unit of thickness.
Superior Mechanical Properties: Provides higher in-plane tensile and flexural strength than an equivalent weight of chopped strand mat.
Excellent Interlaminar Shear Strength when used with CSM: The alternating laminate schedule with CSM creates a strong mechanical bond between WR layers.
Good Damage Tolerance: The continuous roving structure effectively bridges and distributes stress around localized damage.
Proven Reliability: Decades of use in demanding applications like boat hulls have proven its long-term durability.
What applications is fiberglass woven roving used for?
Composite Material Manufacturing
Core reinforcement material for fiber-reinforced polymer (FRP) composites, used in the production of pipes, tanks, pressure vessels, and structural panels.
Reinforcement for composite molds, ensuring mold durability and dimensional stability during repeated use.
Marine Engineering
Manufacture of boat hulls, decks, bulkheads, and marine equipment (e.g., propeller shafts, navigation buoys) using ECR-Glass woven roving for corrosion resistance against saltwater.
Repair and reinforcement of existing marine composite structures, restoring strength and extending service life.
Automotive & Transportation
Lightweight reinforcement for automotive body panels, bumpers, door frames, and interior components, reducing vehicle weight and improving fuel efficiency.
Manufacture of railway carriage components, ship interior panels, and aerospace secondary structures (e.g., cabin partitions) where strength and lightweight are essential.
Construction & Infrastructure
Reinforcement for FRP building panels, roofing sheets, cladding, and decorative components, offering weather resistance and long service life.
Manufacture of civil engineering structures such as FRP bridges, water pipes, and sewage treatment tanks, leveraging corrosion resistance and low maintenance requirements.
New Energy & Industrial Equipment
Reinforcement for wind turbine blade components, ensuring structural integrity under high wind loads and harsh outdoor conditions.
Manufacture of industrial equipment parts such as chemical reaction vessels, pump casings, and heat exchanger components, using ECR-Glass variants for chemical resistance.
Other Key Applications
Furniture manufacturing: Reinforcement for FRP furniture (e.g., chairs, tables) to improve strength and durability.
Sports equipment: Production of FRP sports goods (e.g., surfboards, kayaks, bicycle frames) where lightweight and high strength are required.
Defense & military: Reinforcement for lightweight armor panels, military vehicle components, and protective enclosures.
How to store and handle fiberglass woven roving?
Store in a cool, dry environment with a temperature range of 10°C to 35°C and relative humidity of 35% to 65%. Avoid direct sunlight, heat sources (above 50°C), and corrosive chemicals.
Retain the original packaging until use to prevent contamination and moisture absorption. The packaging is not waterproof, so ensure protection from rain, water splashes, and other water sources.
If stored at temperatures below 15°C, acclimate the product in its original packaging in the workshop for at least 24 hours before use to prevent condensation, which may affect resin wet-out and bonding performance.
There is no defined shelf life when stored properly, but it is recommended to retest key properties (tensile strength, moisture content, resin compatibility) after 3 years from the production date to ensure optimal performance.
Handle with clean gloves to avoid oil or grease contamination on the fabric surface; avoid excessive folding, stretching, or abrasion to prevent fiber damage.
Store rolls horizontally on dedicated racks to prevent deformation; avoid stacking heavy objects on top of the rolls.
FAQ
Q1: Why is fiberglass woven roving almost always used in alternation with chopped strand mat (CSM)?
A: Woven Roving (WR) provides high in-plane strength but has a relatively open, grid-like structure. Chopped Strand Mat (CSM) provides a random fiber network that:
1.Creates a resin-rich bonding layer between WR layers, preventing delamination.
2.Fills the gaps in the WR weave, creating a more homogeneous laminate.
3.Provides multi-directional strength that complements the biaxial strength of the WR.
-The standard laminate schedule is: Gel Coat → CSM → WR → CSM → WR → CSM, etc.
Q2: Which weaving pattern (plain or twill) of fiberglass woven roving is better for my application?
A: Plain weave is recommended for flat or simple-shaped components, hand lay-up processes, and applications requiring high dimensional stability. Twill weave is preferred for complex curved components (e.g., boat hulls), automated molding processes, and applications where fast resin penetration is critical. Twill weave also offers better conformability, while plain weave provides slightly higher rigidity.
Q3: How does fiberglass Woven Roving compare to Stitched Biaxial Fabrics (like 0/90)?
A: Woven Roving: Fibers are crimped (bent at intersections), which slightly reduces ultimate strength. Lower cost. Ideal for hand lay-up. Open weave can lead to higher resin content. Stitched Biaxial: Fibers are straight and parallel, offering ~10-30% higher strength and stiffness for the same weight. Higher cost. Ideal for vacuum infusion. Requires less resin for a given fiber volume.
Summary: WR is the cost-effective choice for open molding; stitched biaxial is for higher performance and weight efficiency in infused parts.
Q4: Can fiberglass woven roving be used in resin infusion (VRIM, RTM)?
A: It can be challenging. The dense, heavy tows can resist resin flow, potentially leading to dry spots. For infusion, it is often better to use stitched biaxial fabrics made from similar weight roving but with optimized flow channels. If using WR, a high-flow media and careful vacuum management are essential.
Q5: Is there a standard for the weight ratio between CSM and WR in a laminate?
A: A common and effective rule is to maintain a ratio of CSM weight to WR weight of between 1:1 and 1:2. For example, 800 g/m² WR is often paired with 450-600 g/m² CSM. This ensures adequate resin for bonding and filling without becoming too resin-rich.
Q6: What is the typical roll weight, and how much can a 20GP container load?
A: The standard roll weight is approximately 30 kg. For North American markets, we also offer 50 kg rolls. A 20GP container can load up to 21 tons of woven roving when properly stowed without pallets; with pallets, the load capacity is approximately 18 tons.
