1. Characteristics of combo mat

 What is combo mat? Glass fiber combo mat is a multi-layer structural reinforcement material made of chopped strand mat and different glass fiber reinforcement materials such as woven roving or needle felt, through stitching, hot pressing or spraying. It has both the rapid wetting performance of chopped felt and the high strength characteristics of woven cloth, and is a reinforcement material with excellent comprehensive performance.Its core characteristics are as follows:

Good reinforcement performance: the cloth layer provides directional reinforcement, and the felt layer improves the interlayer bonding strength;

Fast impregnation: chopped strand mat helps the resin to quickly penetrate the entire composite layer;

Stable processing: not easy to deform, suitable for complex structure plying;

Support customization: gram weight, number of layers, arrangement, and yarn type can be flexibly combined according to needs.

2. Advantages of combo mat

Strengthening and impregnation: meet the dual needs of product strength and resin fluidity;

Improve interlayer bonding: the composite structure makes the layers closer, which helps to improve fatigue resistance;

Strong adaptability: can be used for flat, curved or complex molds.

3. Typical application scenarios

Transportation: bus shells, containers, rail vehicle composite structures;

Construction: lighting panels, anti-corrosion roofs, wall decoration materials;

Bathroom products: bathtubs, wash basins, shower room bases;

Wind energy equipment: small blades, covers and other lightweight components;

Industrial parts: ventilation ducts, electrical housings, cooling tower housings, etc.

4. Selection and use guide

 Examples of main structural combinations:

CEM: chopped strand mat + woven roving+ surface mat

CM: chopped strand mat + woven roving

NCM: needle felt + woven roving + chopped strand mat

Parameter reference:

Weight (g/m²): Select according to different structural combinations and customer needs

Warp/weft line density (tex): 900/3200, 2206/3200, etc.

Suitable resin systems: UP, VE, EP, PU,etc.

Usage suggestions:

Frequent cutting to damage the stitches is not recommended. It is recommended to use the whole sheet according to the specifications;

Storage should be kept away from light, moisture, and pressure, and kept flat.

5. FAQ

What are the advantages of composite felt over single-layer felt?

Combo mat is a combination of different materials such as chopped strand mat, woven roving, multi-axial cloth, etc. through stitching, needle punching and other processes, and has their own performance advantages. Compared with single-layer felt, composite felt performs better in structural strength, plying efficiency and impregnation performance. It can reduce the number of ply layers while ensuring the overall mechanical properties and thickness uniformity of the product, and is particularly suitable for high-efficiency production processes.

What is the difference between combo mat and woven roving?

Although combo mat and woven roving are both glass fiber reinforced materials, their structures and uses are significantly different.

Combo mat is a material that combines chopped strand mat, woven roving or multi-axial cloth by needle punching, hot bonding or stitching, taking into account the advantages of different materials. It has both the good impregnation and plying uniformity of chopped strand mat and the mechanical strength of woven cloth. It is particularly suitable for large-area, fast plying, can effectively reduce processes and improve production efficiency. It is commonly used in hand lay-up, molding, RTM and other processes.

The woven fabric itself is made of glass fiber roving woven in a certain warp and weft direction. It is a single structure and is mainly used to improve the tensile strength and rigidity of the product in the 0° and 90° directions. It is usually used alone in the structural layer of the product, or combined with chopped strand mat to enhance local strength.

What processes are composite mats suitable for?

Composite mats are suitable for a variety of processes such as hand lay-up, molding, RTM, SMC, etc., and they perform particularly well in hand lay-up. The structure between the material layers is stable, and it is not easy to dislocate or wrinkle during the laying process, which improves the convenience of operation and the flatness of the product surface. It is especially suitable for the rapid laying of large-area structural parts.

6. Summary

Glass fiber combo mat is a new type of reinforcement material that combines strength, wettability and molding efficiency. It is particularly suitable for fields with high requirements for product performance and production efficiency. By reasonably combining different glass fiber layers, the mechanical properties and durability of composite products can be effectively improved, and it is an indispensable key material in the modern composite materials industry.We are a glassfiber manufacturer in China.If you are looking for high-quality combo mat, our product CYS14589-428 is the right choice.

 For more information or to obtain our product information, please contact us via email annayu@169chem.net or phone 18909016373.whats app:+86 18909016373