PU Injection Moulding (DIP)

The PU Direct Injection Molding (DIP) Machine is a fully automatic, high-precision footwear manufacturing system designed to directly inject polyurethane soles onto shoe uppers. This advanced technology ensures superior bonding between the sole and upper without the need for adhesives, making it an ideal solution for producing safety shoes, formal footwear, industrial shoes, and performance footwear.

The machine operates with a rotary multi-station structure, allowing multiple molds to work simultaneously through stages such as upper loading, sole injection, curing, cooling, and demolding. This continuous and automated process significantly increases production efficiency while maintaining consistent quality across every pair of shoes.

At the core of the system is a high-accuracy PU metering and mixing unit, which precisely measures and mixes polyol, isocyanate, and additives in exact ratios. The PU material is injected directly into the mold cavity where the shoe upper is placed, forming a perfectly shaped sole that chemically bonds with the upper. This results in footwear with excellent durability, flexibility, shock absorption, and long-lasting performance.

The machine features a PLC-controlled touch panel, enabling easy adjustment and monitoring of critical parameters such as injection volume, pressure, temperature, curing time, and rotation speed. This automation minimizes operator dependency, reduces material waste, and allows quick changeovers for different shoe designs, sizes, and sole patterns.

Designed with a robust heavy-duty frame and high-quality industrial components, the PU DIP machine ensures stable operation, long service life, and low maintenance requirements. Integrated safety systems, including emergency stop buttons, protective enclosures, and fault alarms, provide a safe working environment for operators.

The PU Direct Injection Molding Machine produces footwear with seamless sole attachment, excellent comfort, high wear resistance, and consistent aesthetics. It is widely used in the manufacturing of safety footwear, formal shoes, casual shoes, work shoes, and specialty performance footwear, making it an essential investment for modern footwear factories aiming for high productivity, premium quality, and cost-effective production.