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Production process of continuous forming FRP products

Production process of continuous forming FRP products

The continuous forming process of glass fiber reinforced plastic products refers to the entire process from the input of raw materials, through dipping, forming, curing, demolding, cutting, etc., until the final product is finally obtained.

According to the products produced, the continuous forming process is divided into three types: continuous pultrusion forming process, continuous winding forming process and continuous plate making process.

The continuous winding molding process is mainly used to produce FRP pipes and FRP tanks with different calibers. The characteristics of continuous winding machine are: high production efficiency, stable product quality, low labor intensity, saving raw materials, reducing the number of core molds, etc., but this process has high technological content, large equipment investment, and difficult to reduce diameter. The other process is to combine the plastic pipe extrusion technology with the fiber winding process. The plastic is lined with glass fiber reinforced plastic pipes. The extruded plastic pipe simultaneously functions as a core mold and a corrosion-resistant lining.

The pultrusion process is mainly used to produce various FRP profiles, such as FRP rods, I-beams, angles, troughs, squares, empty webs, and profiled profiles. At present, the largest pultrusion machine can produce 800mm × 800mm cross-section glass fiber reinforced plastic profiles.

The continuous board making process mainly uses glass fiber felt and cloth as reinforcement materials to continuously produce various specifications of flat plates, corrugated boards and sandwich structural boards.

Common characteristics of continuous molding process: ① The production process is fully automated with automatic avatars and high production efficiency; ② The production process is uninterrupted and the length of the product is not limited; ③ The product does not require post-processing, and there is less corner waste during the production process, saving raw materials and energy; ④ The product quality is stable, the repeatability is good, and the yield is high; ⑤ The operation is convenient, the labor and labor conditions are good; ⑥ The cost is low.


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