Direct Roving

Direct roving refers to a form of glass fiber reinforcement used in composite materials, made by bundling thousands of continuous filaments of molten glass into a single strand without any twist. These strands are directly wound into a cylindrical package after being drawn from the glass melt. Direct roving is specifically designed for processes such as pultrusion, filament winding, weaving, and composite fabrication using various resin systems (e.g., polyester, vinyl ester, epoxy, and polyurethane).

Feature:

l  High Strength-to-Weight Ratio:

Direct roving contributes significantly to the high strength-to-weight ratio of composite materials, making them ideal for applications requiring lightweight yet strong materials.

l  Cost-Efficient:

It is a cost-effective solution for reinforcing composites due to its streamlined manufacturing process, which reduces waste and simplifies handling.

l  Versatile Resin Compatibility:

Direct roving is compatible with a wide array of resin systems, offering flexibility in the production of composite materials tailored to specific performance requirements.

l  Uniform Tensile Strength:

The continuous filament nature of direct roving ensures uniform tensile strength across the composite material, enhancing its structural integrity.

l  Improved Surface Finish:

Products fabricated using direct roving can achieve a smooth surface finish, which is beneficial for both aesthetic and functional purposes.

Application:

l  Pultrusion:

Direct roving is extensively used in pultrusion, a continuous process for manufacturing composite profiles, offering uniform strength and stiffness in the longitudinal direction.

l  Filament Winding:

It is ideal for filament winding, where fibers are wound under tension over a rotating mandrel, a common method for making hollow, cylindrical structures like tanks and pipes.

l  Weaving:

Direct roving can also be woven into fabrics that serve as reinforcements in laminated composites, providing multidirectional strength and stiffness.

l  Resin Transfer Molding (RTM):

In RTM and other closed mold processes, direct roving is used to create complex shapes and structures that benefit from its consistent properties and ease of impregnation with resins.

Specification:

*Specific products could be made according to customers’requirements.