Product Features
- Integrated Single-Fabric Construction: A layer of chopped strand mat and a reinforcement fabric (like woven roving or biaxial cloth) are mechanically stitched into a single material, radically simplifying the lamination process.
- Hybrid Mechanical Properties: This fiberglass combo mat delivers both the isotropic properties of mat (impact resistance, crack prevention) and the anisotropic properties of woven fabric (high tensile and flexural strength) in a single layer.
- High Bulk & Rapid Thickness Buildup: The inclusion of the chopped strand mat layer gives the material more bulk than a standalone woven fabric, allowing for the rapid and economical buildup of laminate thickness and stiffness.
- Binder-Free Stitching: The layers are physically joined by a strong polyester thread, not a chemical adhesive, creating clear channels for rapid resin flow, which is especially beneficial for vacuum infusion and other closed-mold processes.
Why We Are Different
While many combo mats look similar, the true difference lies in the manufacturing details that dictate performance, efficiency, and the final quality of your part. As a primary manufacturer, we have invested heavily in R&D to solve the two biggest pain points our customers face in production: surface finish and resin wet-out speed.
Technical Specifications & Common Constructions
Mat Weight: 225 g/m²
Fabric Weight: 480 g/m²
Fabric Weave: +/-45° Biaxial
Features: Excellent torsional & shear strength.
Case: High-performance boat hulls, race car chassis, and high-stiffness parts.
E-LTM 450/600Mat Weight: 450 g/m²
Fabric Weight: 600 g/m²
Fabric Weave: Plain Weave
Features: Balanced bidirectional strength, most cost-effective.
Case: RV sidewalls, truck bodies, general industrial panels.
E-LTM 450/800Mat Weight: 450 g/m²
Fabric Weight: 800 g/m²
Fabric Weave: Plain Weave
Features: Higher flexural strength and rigidity.
Case: Large flat panels (e.g., container walls), wind blades, high-load decks.
Customization & Support
- Step 1: Technical Consultation & Needs Analysis: Our partnership begins with an in-depth technical dialogue directly with our material engineers, not just salespeople. We’ll discuss your specific application, resin system, target laminate weight and thickness, mechanical requirements, and your unique process (hand lay-up, infusion, etc.) and equipment width.
- Step 2: Engineering & Prototyping: Our engineering team translates your needs into a specific product formula and process parameters. This includes selecting the optimal mat/fabric weight combination, designing the ideal stitch pattern for your resin flow, and adjusting binder solubility. We then produce a small batch of testable samples on our dedicated sample line.
- Step 3: Customer Validation & Performance Feedback: You test our samples in your own production environment with your own resins and process. We encourage your most critical feedback: Was the wet-out speed as expected? Was the drapability correct? Was there a measurable increase in layup efficiency? We will fine-tune the sample based on your feedback until it perfectly matches your production tempo.
- Step 4: Process Lock-in & Mass Production: Once the sample is officially approved, we “lock-in” all production parameters—from raw material batch numbers to stitch tension—and create a unique product ID for you. This guarantees that every future order you place will have the exact same reliable, high-quality performance as the sample you approved.
Advantage 1: Exclusive "Zero-Crimp" Flat-Stitch Technology
- The Customer Pain Point:
“I’ve used cheaper combo mats, but the stitching is too thick and tight. Not only does it impede resin flow during layup, creating dry spots, but even worse, the stitch pattern prints through the gelcoat after curing. We end up wasting hours sanding and fairing a surface that should have been smooth, which completely negates any material savings.” - Our Solution:
We have engineered a proprietary stitching process that eliminates the issues of fiber crimp and surface print-through. By utilizing state-of-the-art, German-engineered multi-needle flat-stitch equipment and our “Zero-Crimp” process, we can:
Precisely Control Stitch Tension: We ensure the stitch provides robust integrity while laying flat on top of the fibers, rather than constricting and distorting them.
Utilize Ultra-Fine, Low-Profile Thread: We use a specially treated, fine-gauge polyester thread that reduces the profile height of the stitch by up to 40% compared to standard stitching.
- Your Benefit:
- A Perfect Class-A Surface: Eliminates stitch print-through, reducing or even eliminating the need for post-finishing work and directly lowering your labor costs.
- Faster Resin Flow: The flat stitch pattern creates an unobstructed path for resin to flow, enabling faster wet-out in both hand lay-up and vacuum infusion.
- Stronger Interlaminar Bond: Prevents internal dry spots and voids caused by stitch obstruction, ensuring a perfect bond between the mat and fabric layers for superior structural integrity.
Advantage 2: Rapid-Dissolve Binder (RDB) System
- The Customer Pain Point:
“Our biggest frustration is slow wet-out. With some combo mats, the binder in the mat layer dissolves too slowly, and the resin just sits on top. Our workers have to repeatedly roll and brush the surface, which is inefficient and easily traps air between the mat and the woven roving, creating critical weak spots.” - Our Solution:
We understand that the binder in the chopped strand mat layer is the “gatekeeper” of wet-out efficiency. Our chemical engineering team has developed a proprietary Rapid-Dissolve Binder (RDB) System:- Fine-Tuned Chemical Formula: Our binder is chemically engineered to begin dissolving instantly upon contact with the styrene in polyester or vinyl ester resin, rather than just slowly softening.
- Microporous Structure: We control the curing process of the binder to create a microporous structure, providing more initial channels for the resin to begin its penetration.
- Your Benefit:
- Lightning-Fast Wet-Out: Resin effortlessly penetrates the mat layer to quickly reach the woven roving below, significantly reducing the lamination time for each layer.
- Zero Air Entrapment: Fast, thorough wet-out fundamentally prevents air from being trapped between the layers, ensuring a dense, uniform, and void-free laminate.
- Higher Production Throughput: Your workers spend less time brushing and more time laminating, directly increasing your workshop’s overall production tempo.
Typical Applications: Where Efficiency Meets Strength
The manufacturing of large components like boat hulls and decks requires multiple reinforcement layers. Using a fiberglass combo mat, fabricators can apply two layers at once, drastically shortening lamination times for large hulls, which is critical for managing tight production schedules and high labor costs.
Wind turbine blades can be over 100 meters long, and the consistency of the laminate is directly tied to the blade’s performance and safety. The “mistake-proof” nature of a fiberglass combo mat ensures that the layup schedule is executed precisely, making it an ideal choice for large-scale, high-quality production.
In the production of truck bodies, RV sidewalls, and refrigerated container panels, both stiffness (to resist flexing) and impact resistance are required. The balanced strength-to-bulk properties of a fiberglass combo mat, combined with its high-efficiency advantage, perfectly match the demands of this sector for cost, performance, and production speed.
Glance At My Workshop, Check Technical Data Sheet
- Factory Workshop
- Catalog for Fiberglass Combo Mat
Related Product
Frequently Asked Questions(FAQ)
Answer: While the per-kilogram price of a fiberglass combo mat may be slightly higher, the total manufactured cost of your part will be significantly lower. When you factor in the 50% reduction in labor, reduced material waste from handling a single roll, and the elimination of costly defects, you will find the return on investment is immediate and substantial.
Answer: Our exclusive “Zero-Crimp” Flat-Stitch Technology is specifically engineered to solve this problem. The ultra-fine, low-profile thread we use is designed to lay flat within the laminate. For the most critical Class-A cosmetic surfaces, we still recommend following industry best practice and using a lightweight surfacing veil as the first layer.
Answer: Unlike a trading company that simply resells products, we control the entire manufacturing process. From incoming raw material inspection to online monitoring of the stitching process and final lab testing of every batch for weight, strength, and consistency, we have complete oversight. Our ISO 9001 certification is a guarantee of our commitment to quality, ensuring you receive the exact same high-performance product, every single time.
Answer: Our standard fiberglass combo mat is designed for polyester and vinyl ester resins, as the binder in the chopped strand mat layer requires styrene to dissolve. Therefore, it is not compatible with epoxy. However, as a primary manufacturer, we can offer you a customized epoxy-compatible solution. We can replace the standard chopped mat layer with a binder-less “stitched chopped mat,” creating a high-performance combo mat that is 100% compatible with epoxy. Contact our engineers to discuss your epoxy application
Answer: On the contrary, it is generally easier to handle. First, you only need to manage and cut one roll of material instead of two, simplifying your prep work. Second, because the mat and fabric are stitched together, it is less prone to distorting or fraying during cutting and placement compared to a standalone woven roving. A sharp utility knife or industrial shears are all you need for clean, easy cuts.