EPP molding machine (Expanded Polypropylene Molding Machine) is an industrial device that uses steam hot pressing technology to process pre-expanded polypropylene (EPP) beads into complex three-dimensional foam products. Its core processes include feeding → steam heating → melting and shaping → cooling and dehydration → demolding, all of which are controlled by an automated system.

1.High-efficiency steam molding system:

An optimized steam control system (steam inlet and exhaust) ensures that steam penetrates the EPP beads evenly and quickly in the mold cavity, achieving complete fusion and uniform expansion, thereby ensuring consistent product density and excellent physical properties.

Efficient steam utilization helps shorten the molding cycle and improve production efficiency.

2. High degree of automation:

Equipped with advanced PLC (programmable logic controller) and touch screen human-machine interface (HMI), the entire molding process (feeding, steam heating, pressure maintenance, cooling water cooling, vacuum dehydration, mold opening and ejection) is automatically controlled.

Easy to operate, with convenient parameter setting, storage, and retrieval, reducing manual intervention, lowering the difficulty of operation, and reducing the error rate.

3. Precise temperature and pressure control:

Precise control of steam temperature, pressure, and cooling water temperature is key to ensuring the molding quality (dimensional stability, surface finish, and fusion strength) of EPP products.

4. Excellent clamping and holding pressure capabilities:

Reliable hydraulic or mechanical clamping systems provide sufficient clamping force to ensure that the mold closes tightly under steam pressure, preventing flash and ensuring dimensional accuracy of the product.

Stable holding pressure ensures that the product retains its shape during the cooling and setting process.

5.Efficient cooling and vacuum systems:

Equipped with an efficient cooling water circulation system, it quickly lowers the temperature of the mold and product, shortening the cooling time.

The vacuum system is used to quickly remove residual steam and moisture from the mold cavity, accelerating the drying of the product, shortening the demolding time, improving efficiency, and helping to improve the surface quality of the product.

6.Mold adaptability and compatibility:

The machine design is highly compatible and can be adapted to EPP molds of different sizes and complexity (usually made of aluminum alloy), meeting the production needs of a wide range of products.

7.Reliability and durability:

Key components (such as hydraulic systems, valves, and seals) are made of high-quality materials to ensure long-term stable operation and a long service life of the equipment in high-temperature, high-pressure, and high-humidity environments.

The structural design is stable.

8.Safety protection:

Equipped with necessary safety interlock devices, pressure protection, emergency stop buttons, etc., to ensure the safety of operators and equipment.

Application areas

Automotive industry: bumper energy-absorbing blocks, battery pack buffer layers, seat cores

High-end packaging: precision instrument shockproof linings, cold chain insulation boxes
Sports protection: helmet energy-absorbing layers (impact absorption rate > 70%), protective gear

Industrial field: equipment shock-absorbing pads, building soundproofing modules

Consumer goods: toys