The PP+glass fiber‑impregnated CFRT sheet production line is designed to manufacture composite sheets consisting of glass fiber strands and PP resin. After the glass fiber strands are unwound, they pass through a strand‑straightening and heating unit before entering the mold, where they are co‑extruded with molten PP resin into a three‑roller calender. Following cooling and shaping, the material attains the desired thickness, and is then wound up after stress relief. The resulting PP‑glass fiber panels exhibit excellent rigidity, exceptional thermal stability, minimal warpage, and superior flame retardancy, making them suitable for many applications as a cost‑effective alternative to high‑performance engineering plastics. We welcome both new and existing customers from home and abroad to visit our company for guidance and to discuss potential collaborations—we are committed to providing you with top‑quality equipment and services!

Continuous fiber-reinforced thermoplastic composites (CFRT) in the form of tapes or sheets are a new class of advanced composite materials that exhibit exceptional properties such as high strength, high modulus, and excellent corrosion resistance, achieved by fully impregnating glass fibers, carbon fibers, and other reinforcing fibers with a thermoplastic resin.

The company specializes in manufacturing specialized production equipment for CFRT tapes and sheets, as well as glass-fiber‑impregnated CFRT sheet‑production lines. These systems ensure complete impregnation and parallel alignment of individual filaments, while also enabling the recovery and reuse of edge trimmings and scrap materials. We offer a one-stop service encompassing product design and manufacturing, installation and commissioning, and personnel training.

Characteristics of glass-fiber reinforcement:

1. After glass fiber reinforcement, since glass fiber is a high-temperature-resistant material, the heat resistance of the reinforced plastic is significantly improved compared to that of the unreinforced material.

2. After glass fiber reinforcement, the incorporation of glass fibers restricts the mutual mobility between polymer chains in the plastic; consequently, in CFRT fiberglass‑impregnated sheet production lines, the shrinkage rate of the reinforced plastic is significantly reduced, and its rigidity is greatly enhanced.

3. After glass-fiber reinforcement, PP plastic no longer exhibits stress cracking, and its impact resistance is significantly improved.

Main applications of fiberglass

Twisting with untwisted roving

To produce fiberglass pipes and storage tanks of varying wall thicknesses, the filament winding process was developed. For the untwisted rovings used in winding, the following characteristics are essential.

1. It must be easy to form into a ribbon, typically ensuring it takes on a flat, ribbon-like shape.

2. Since untwisted roving tends to unravel when unwound from the bobbin, it is essential to ensure excellent unwindability, and the resulting filaments must not be tangled or disordered like a bird’s nest.

3. The tension must remain constant and must not fluctuate excessively, nor should any sagging occur.

4. The linear density of untwisted roving must be uniform and not fall below the specified value.

5. To ensure easy impregnation as the fiber passes through the resin bath, the roving must exhibit excellent wettability.

Introduction to Composite Materials:

Composite materials are materials composed of two or more constituent materials with distinct properties, which are combined through physical or chemical means to form a new material exhibiting enhanced performance at the macroscopic (or microscopic) scale.

By leveraging the complementary strengths of different materials, composite materials achieve synergistic effects, resulting in overall performance that surpasses that of the constituent materials and meeting a wide range of application requirements.

Properties of composite materials:

In composite materials, fiber-reinforced materials are widely used and account for a large share of applications.

It is characterized by low density and high specific strength and specific modulus. For example, carbon-fiber-reinforced epoxy composites exhibit specific strengths and specific moduli that are several times greater than those of steel and aluminum alloys, while also possessing excellent chemical stability, friction‑reducing and wear‑resistant properties, self‑lubrication, heat resistance, fatigue resistance, creep resistance, sound‑damping capabilities, and electrical insulation.