High Pressure Foaming Autoclave

Model: FA-1000 / FA-1500       

Specification	FA-1000 Standard Production Type	FA-1500 Large Batch Type
Effective Tank Volume	1000 L	1500 L
Design Pressure	35 MPa	35 MPa
Working Pressure	≤30 MPa	≤30 MPa
Design Temperature	200 ℃	200 ℃
Working Temperature Range	Room temperature ~ 180 ℃	Room temperature ~ 180 ℃
Foaming Medium	Supercritical nitrogen (N₂)	Supercritical nitrogen (N₂)
Applicable Materials	E-TPU particles, thermoplastic elastic granules	E-TPU particles, thermoplastic elastic granules
Tank Material	304 stainless steel inner tank + carbon steel shell	304 stainless steel inner tank + carbon steel shell
Heating Method	Thermal oil circulation heating	Thermal oil circulation heating
Control System	PLC touch screen fully automatic control	PLC touch screen fully automatic control
Safety Configuration	Overpressure relief valve, over-temperature alarm, emergency stop device	Overpressure relief valve, over-temperature alarm, emergency stop device
Machine Size (L×W×H)	3800×1800×2200 mm	4500×2000×2400 mm
Package Form	Fumigated export wooden box fixed	Fumigated export wooden box fixed
Net Weight	4200 KG	5800 KG
Gross Weight	4800 KG	6500 KG

                                                                                                           

Key Machine Features

· Adopts supercritical nitrogen physical foaming process, no chemical foaming agent residue, finished products meet shoe material environmental protection standards

· 304 stainless steel high-pressure tank with stable pressure and temperature resistance, suitable for continuous mass production

· PLC touch screen fully automatic control, accurately adjustable pressure, temperature and holding time, ensuring good batch consistency of foaming

· Uniform cell structure of foamed E-TPU particles with stable elasticity and cushioning performance, meeting production requirements of sports shoe midsoles

· Equipped with multiple safety protection devices, automatic overpressure relief, over-temperature alarm and emergency stop, ensuring production safety

· Thermal oil circulation heating system with uniform temperature rise and high temperature control accuracy, reducing local uneven foaming

· Quick-opening tank door structure for convenient loading and unloading, shortening auxiliary time and improving production efficiency

· Compatible with E-TPU and various thermoplastic elastic particles, different foaming densities can be achieved by adjusting process parameters

· Nitrogen medium can be recycled, reducing production consumable cost and conforming to green production concept

· High integration with supporting operation platform and pipeline system, pre-commissioned before delivery, shortening on-site installation cycle

Application Fields

This High Pressure Foaming Autoclave serves E-TPU shoe material factories, sports footwear midsole manufacturers, thermoplastic elastomer processing plants and footwear R&D centers. It is specially used for supercritical nitrogen physical foaming of E-TPU particles to produce popcorn-style shoe midsoles, suitable for running shoes, casual sneakers, training shoes and high-elasticity footwear products.

Operation Guidance

1. Check pressure gauge, safety valve, pipeline sealing and power supply before startup to ensure all components are in normal condition
2. Load E-TPU raw material particles into the material basket inside the tank, close and lock the tank door according to operating procedures
3. Set foaming pressure, temperature and holding time on the touch screen according to material process requirements
4. Start the equipment to automatically complete nitrogen injection, heating, pressure holding and pressure relief procedures
5. After the procedure is finished and the pressure is fully released, open the tank door and take out the foamed materials
6. Clean residual materials inside the tank after daily production, and check the sealing ring for wear

Installation Guidance

1. Place the equipment on a solid reinforced concrete foundation, and reserve sufficient operation and maintenance space around it
2. Connect the matched power supply, nitrogen gas source, cooling water system and exhaust pipeline according to the equipment drawing
3. Conduct pressure test and leak detection on the tank body and pipeline after installation, and confirm no leakage
4. Run 2–3 times no-load test and 1 time trial foaming test with materials, and adjust process parameters before formal production

Maintenance & Repair Instructions

Daily Maintenance

Check pressure gauge and safety valve status; clean surface dust; confirm pipeline sealing is good

Weekly Maintenance

Inspect sealing ring of the tank door for wear; test alarm function; clean filter of the nitrogen pipeline

Monthly Maintenance

Calibrate temperature and pressure sensors; check oil level of the heating system; fasten loose pipeline connectors

Repair Rules

Troubleshoot according to the alarm prompt on the touch screen; cut off power and release pressure completely before disassembly and maintenance; replace worn sealing parts regularly to ensure pressure holding performance