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Production process of extruded profiles

Release time：

2025-06-16 11:06:07

The production of extruded profiles is mainly completed through the extrusion molding process, which is a continuous and highly automated production method. It mainly includes the following steps: (1) Raw material preparation. According to the product design requirements, suitable reinforcing fibers (such as glass fiber yarn, carbon fiber bundles, etc.) and matrix resins (such as unsaturated polyester resin, epoxy resin, etc.) are selected. Reinforced fibers require surface treatment to enhance their interfacial adhesion with the resin matrix; Resin requires the addition of curing agents, accelerators, flame retardants, and other additives to create a resin system with appropriate viscosity and curing properties. （2） Fiber arrangement and impregnation will be prepared to increase

The production of extruded profiles is mainly completed through the extrusion molding process, which is a continuous and highly automated production method that mainly includes the following steps:


（1） Raw material preparation


According to product design requirements, select appropriate reinforcing fibers (such as glass fiber yarn, carbon fiber bundles, etc.) and matrix resins (such as unsaturated polyester resin, epoxy resin, etc.). Reinforced fibers require surface treatment to enhance their interfacial adhesion with the resin matrix; Resin requires the addition of curing agents, accelerators, flame retardants, and other additives to create a resin system with appropriate viscosity and curing properties.


（2） Fiber arrangement and impregnation


Arrange the prepared reinforcing fibers in an orderly manner through devices such as yarn racks and bundles, and ensure that they enter the dipping tank along the predetermined path. In the impregnation tank, the fibers are fully impregnated with resin, so that the resin is evenly wrapped around the surface of each fiber, forming a fiber resin composite. In order to ensure the impregnation effect, a preform mold is usually used to preliminarily compact the fibers, remove excess resin, and preliminarily shape the fibers.


（3） Extrusion molding and curing


The fiber bundles soaked in resin are continuously pulled into the molding mold by the traction device. The molding mold has a cavity with the same cross-sectional shape as the profile, and during the pulling process, the fiber resin composite is heated and cured inside the mold. The mold temperature is usually accurately controlled according to the curing characteristics of the resin, which is generally divided into preheating area, curing area and post-treatment area, so that the resin can gradually complete the gel, curing and post curing processes, and form pultrusion profiles with stable shape and performance.


（4） Traction and cutting


The cured extruded profiles are pulled out of the mold at a constant speed by a traction machine. The tension and speed of the traction machine need to match the curing speed of the resin to ensure the quality and production efficiency of the profiles. Finally, according to the length requirements of the product, use a cutting device to cut the continuous profiles into finished products.


Nantong Ruichi New Materials Co., Ltd. is located in Rugao, Nantong, known as the hometown of longevity and education. With the advantage of regional talent resources, it is a technology-based enterprise specializing in the production, manufacturing, and research and development of extruded profiles, extruded grids, molded grids, fixtures, and their supporting products.


The company covers an area of 15000 square meters and has a total construction area of 12000 square meters. The annual production capacity of various extruded products exceeds 1500 tons, the annual production capacity of molded grids can reach 500000 square meters, and various fixtures and accessories exceed 500000 units. The comprehensive production capacity is very excellent.


The company has passed ISO9001 quality management system certification and ASTME-84 fire and flame retardant testing by an independent laboratory in the United States. Currently, 95% of the company's products are used for export and have been exported to over 50 countries and regions including North America, Europe, Southeast Asia, and the Middle East, with a large and stable customer base.