Against the background of rapid expansion in electric grid and ultra-high-voltage electricity transmission construction, the growth of composite insulator is the most rapid in the development of electric insulation materials.

The global composite insulator market is expected to grow stably from US$2.4 billion in 2025 to US$3.9 billion in 2035. The demand will further grow as old electric grids have to be repaired.

Injection molding of ultra-large hollow composite insulator is always a common problem to the industry. Dekuma’s DKM-RA2400 rubber injection molding machine makes a technological breakthrough.

Dekuma’s DKM-RA2400.

190,000-cc ultra-large injection volume

Previously, due to the limitation of injection volume, producing large insulators requires multiple injection stages. This not only prolongs production cycle, but also results in defects such as bubbles and layers at joints.

Dekuma’s DKM-RA2400 features world-leading 190,000-cc ultra-large injection volume, which enables one-shot complete filling for large rubber products. It allows even flow of rubber in mold cavity and eliminates segmented injection and assembling processes, reducing risks of defects at joints.

146MPa ultra-high injection pressure

Apart from large injection volume, other factors, such as whether rubber can be evenly injected into complex mold and whether the mold are tight, also affect the performance of final products.

DKM-RA2400 is equipped with 146MPa ultra-high injection pressure system, which can ensure high-speed, even rubber injection even with structurally complex and long hot runner molds, resulting in products with precise size and stable performance.

Optimized injection system, screw with strong conveying ability and mixing performance, and outstanding degassing design to ensure even material mix without burnt support stable material flow for large-capacity injection.

Dual-cylinder mold clamping + horizontal structure

On mold clamping system, DKM-RA2400 features dual-cylinder mold clamping structure. The balanced structure allows more even clamping force, avoiding mold base deflection and ensuring clamping precision and mold durability.

Compared to traditional vertical machine models, DKM-RA2400 features a horizontal design, significantly reducing machine height. This not only lower the requirement for factory floor height and the cost for production facility construction, it also make operation, maintenance, and mold change process more convenient.

Supporting global customers in producing ultra-large rubber products

Currently, Dekuma’s products are sold to more than 50 countries and regions around the world, providing services to more than 1,500 customers, becoming one of the leading suppliers in electric insulation, rubber track and other sectors.

From the world-leading 190,000-cc single-barrel injection volume, to ultra-high injection pressure, further to the dual-cylinder mold clamping and intelligent system, DKM-RA2400 provides a one-stop solution for large hollow insulator and rubber products with high standards.

For E&E and engineered rubber manufacturers who demand high quality and efficiency, DKM-RA2400 represents less defects, higher production capacity and product competitiveness.