The polypropylene Yarn Stretching Machine is the core equipment in the industrial production of polypropylene fiber (polypropylene). Its technical performance directly determines the strength, modulus and stability of the fiber, and is widely used in high-demand fields such as safety protection, industrial reinforcement, and special fabrics. This equipment converts polypropylene chips into high-strength filaments with a single-filament strength of more than 7.0g/d through precise melt spinning and multi-stage drawing processes, becoming the preferred solution to replace traditional materials.

How many links does the core process of polypropylene Yarn Stretching Machine include?

The core process of polypropylene Yarn Stretching Machine includes three links: in the melt spinning stage, polypropylene slices are heated to a molten state by a screw extruder, and the primary fibers are extruded through a rectangular or circular spinneret. The spinneret aperture and arrangement design directly affect the uniformity of the fiber fineness; in the multi-stage drawing stage, the primary fibers are sequentially subjected to low-temperature pre-drawing, high-temperature wet drawing and tensile heat setting, and the molecular chains are highly oriented and form a crystalline structure through gradient stretching of 3-5 pairs of hot rollers, and finally obtain the characteristics of low elongation and high modulus; in the cooling and setting stage, the side blowing and oiling system are used to coordinately control the fiber cooling rate to ensure a smooth surface, strong cohesion, and reduce the risk of broken wires.

With the growth of downstream market demand for high-strength and lightweight materials, polypropylene Yarn Stretching Machines are developing in the direction of multifunctionality. By replacing the composite spinneret or adjusting the drawing process, special products such as hollow fibers and special-shaped cross-section fibers can be produced, expanding to emerging fields such as filter materials and medical textiles. Its technological iteration not only promotes the upgrading of the polypropylene industry, but also provides key material support for high-end manufacturing.

Jiangxi Donghua Machinery Co., Ltd. is located in Fuzhou, Jiangxi, which is known as the "hometown of talents" and the hometown of Wang Anshi and Tang Xianzu. It is located in the Fuzhou National High-tech Industrial Park in Jiangxi. Since its establishment in 2002, the company has been engaged in the research and development, production and sales of complete sets of chemical fiber equipment. The company has gathered a group of professionals with rich experience in the research and development and production of chemical fiber equipment. It has extensive and close technical cooperation with domestic fiber research colleges and universities and scientific research institutes such as Donghua University, National University of Defense Technology, and Beijing Institute of Fashion Technology, so that the products are constantly updated and always maintain the industry position. Years of hard work have brought the company fruitful results. The company has a number of national invention patents and has become a national high-tech enterprise and a demonstration enterprise for scientific and technological innovation in Jiangxi Province. The company's products range from medium and high-strength spinning equipment for polypropylene to a series of special fiber spinning equipment such as high-strength and high-modulus polyethylene, aramid, and carbon fiber. Sales are spread across more than 30 provinces, cities, and autonomous regions across the country, and are exported to South Asia, Southeast Asia, Russia and other regions. The company brings high-quality products and excellent trust to customers in the industry with technology, products, and services. The company adheres to the spirit of "innovation and development", keeps forging ahead, and sincerely looks forward to cooperation and common development with customers.