Plastic injection molding is a widely used industrial manufacturing process, especially suitable for mass production of plastic products.
High production efficiency and high degree of automation: Short injection molding cycle (typically 15–60 seconds), supports multi-cavity molds, and can produce thousands of parts per day; the entire process is easily automated, significantly reducing labor costs.
One-step molding of complex structures: Can manufacture complex geometric parts with snaps, threads, thin walls (as thin as 0.1mm), and inserts, eliminating the need for subsequent assembly.
Wide material adaptability: Compatible with over 18,000 thermoplastics, thermosetting plastics, and elastomers, including PP, ABS, PC, PA66, PEEK, etc., and properties can be adjusted through modification or blending.
High dimensional accuracy and consistency: Tolerances can be stably controlled within ±0.02mm, and surface roughness Ra can reach 0.01μm (mirror finish), suitable for precision parts such as medical syringes and 5G connectors.
Unit cost decreases significantly with increasing production volume: Although the initial mold investment is high, the unit cost in mass production is far lower than that of 3D printing or CNC machining, and the cost advantage usually becomes apparent after production exceeds 5,000 pieces.
Recyclability and environmental potential: Waste materials (such as runners and defective products) can be recycled and reused; new technologies such as microfoaming can reduce material usage by 8%–15% and reduce energy consumption.
Flexible color and surface treatment: Color masterbatch can be added directly to the raw material to achieve uniform coloring, or matte, frosted, and leather-like surface effects can be obtained through mold textures, without the need for secondary spraying.
