Glass Fiber Reinforced Plastic

Pultruded composite profiles, made of glass fiber reinforced plastic (FRP), have gained increasing popularity in numerous professional sectors due to their many advantages over traditional materials. These benefits include high mechanical strength, reduced weight, corrosion resistance, and much more. Specifically, they offer these advantages:

• High mechanical strength – FRP offers superior mechanical strength, both in tension and compression, making it ideal for applications requiring robust and durable materials.
• Reduced weight – A significant advantage of FRP is its highly favorable strength-to-weight ratio.
• Thermal and electrical insulation – FRP possesses excellent insulating properties from both thermal and electrical standpoints.
• Reduced maintenance – Thanks to their corrosion resistance and durability, pultruded profiles require less maintenance compared to traditional materials.
• Weather resistance – FRP pultruded profiles withstand weather conditions well, including UV rays, rain, and wind.
• Competitive costs – Although the initial cost of FRP may be higher than some traditional materials, its long-term benefits, such as durability, reduced maintenance, and light weight, can lead to lower overall costs over the product’s life cycle.
• Sustainability – Glass fiber reinforced plastic can be designed to have a reduced environmental impact, thanks to its long lifespan and recyclability.

In conclusion, pultruded composite profiles in glass fiber reinforced plastic offer a unique combination of strength, light weight, durability, and versatility, making them an ideal solution for many engineering and structural applications. Their use can lead to significant improvements in terms of performance, efficiency, and sustainability.

The production of pultruded composite profiles occurs through a process called pultrusion, which is a combination of the words “pull” and “extrusion.” This continuous and automated method allows for the creation of profiles with constant cross-sections and variable lengths. Here is a brief overview of the process:

• Fiber preparation – Glass fibers (or other reinforcement fibers such as carbon or aramid) are unwound from spools and arranged in a specific format.
• Impregnation – The fibers are impregnated with a liquid polymer resin, such as polyester, vinyl ester, or epoxy. This process generally occurs in an impregnation bath.
• Forming – The resin-impregnated fibers are guided through a series of guides that arrange them into the desired shape and then pass through a heated forming die that gives them their final form.
• Polymerization – The impregnated material passes through a heated die where the resin fully polymerizes, solidifying and fixing the fibers in the desired shape.
• Cooling, cutting, and finishing – After polymerization, the profile is cooled to further consolidate the shape. The cut profiles may undergo additional finishing treatments.

In summary, pultrusion is a highly efficient and versatile process for the production of glass fiber reinforced composite profiles, ensuring products with high mechanical performance and long service life.

Glass fiber reinforced plastic is well suited for recycling, so that production waste can be reintroduced into the production cycle with clear economic and environmental sustainability advantages.

One example is that of our client, a leader in the production of pultruded composite profiles, where we installed and commissioned a 22 kW single-shaft shredder with an attached discharge conveyor belt that discharges into a big-bag.

Both the hopper and the conveyor are fully enclosed and equipped with aspiration, in order to prevent the dispersion of glass fibers in the work environment and safeguard operator safety.

Given the high abrasion caused by the glass fibers contained in the profiles, the shredder rotor has been treated with a special anti-wear surface treatment, in order to extend its service life and reduce maintenance intervals.

Another safety feature is the material collection bin presence sensors: if the bin is not in position, the shredder and conveyor will not start and the material therefore does not risk falling to the ground without being collected.

All SatrindTech products are placed on the market taking into account the safety aspects of the machinery and operators at the machine within the framework of mandatory requirements, including for environments with potentially explosive atmosphere risk (ATEX).