Supercritical Fluid Foaming

● Use carbon dioxide gas, nitrogen, etc. as foaming agents in harmony with the environment, and use their supercritical foaming extrusion properties to produce plastic foam products with uniform diameter bubbles. It is also possible to form fine bubbles with cell diameters up to microns.

● The use of supercritical inert gas foaming technology has low production costs; the VOC content of the produced products can meet the most stringent environmental protection standards of passenger cars and other industries.

● It is also suitable for supercritical fluid foaming of crystalline resins that have been difficult to foam at high rates in the past.

● Unlike hydrocarbon-based physical fluid foaming agents, which are explosive and flammable, it is not necessary to take explosion-proof protective measures for the device.

● Compared with the physical blowing agent of hydrocarbons, the earth's room temperature effect coefficient is small, which is a very mild technology for the environment.

● Extrusion: plates, blocks, sheets, beads, etc.

● Chuangbo cooperates with the team of Beijing University of Chemical Technology, which is one of the China national key universities, focusing on innovative research and development of supercritical fluid foaming technologies and equipment for thermoplastic materials such as PP, PET, PLA, and TPU.

PP foaming sheets

High foam sheets

High foaming PP, PLA sheets

1. raw material hopper   2. loss in weight feeder   3. co2 gas feeder   4. twin screw extruder   5. single screw extruder   

6. melt cooler   7. flat die head   8.three roll calender   9. flattening    10. thickness checking   11. two-roller tractor   

12. winding   13. tube die head   14. cooling blower   15. auxiliary traction   16. bead die head   17 strand cooling unit   

18. pelletizer   19. product silo   20. shaping and cooling   21. trimming and cooling   22. sheet hauling

● Co-rotating twin screw extruder + inert gas filler →  Melt pump  →  Single screw extruder (PLC)

Suitable for: PE, PS, PP, TPU, PLA ...

● Single screw extruder + inert gas filler  →  Melt pump  →  Single screw extruder (PLC)

Suitable for: PE, PS, PP ...

● Co-rotating twin screw extruder + inert gas filler   →   Melt pump   →   Melt cooler (PLC)

Suitable for: PE, PS, PP, TPU, PLA ...

1. Forming Die Heads and Auxiliaries

● Flat die head  →  Three-roller setting cooling   →   Cooling  →   Cutting edge  →    hauling →  Winding and cutting

Foaming ratio: 1-3 times

●Tube die head   →   Splitting and cutting  →   Auxiliary hauling  → Flattening   →   Cooling    →  hauling    →  Winding

Foaming ratio: 5-15 timesl

● Bead die head   →  strand cooling  →   hauling and pelletizing      

screening

Foaming ratio: 10-35 timesl

● Multi-hole foaming die head  →  Pre-shaping  →   Cooling and shaping  →   Deep cooling   →   Trimming →  Planing on both sides  →   cutting with fixed-length   →  stacking

Foaming ratio: 5-20 times

2. Inert gas filler

1) Made in China

● Can be filled with carbon dioxide, nitrogen, freon, cyclopentane, etc.

● Key components can be imported, such as filling pumps, mass flow meters, valves, etc.

● The control system is divided into: manual, semi-automatic and fully automatic. At present, the technology is mature.

● The flow range can be divided into: experimental line, small batch production, pilot line, and large production unit.

● The cost advantage is obvious.

● Quick after-sales service.

 2) ISCO imported from abroad

● Can add carbon dioxide, nitrogen, etc .

● The entire system is imported.

● High filling accuracy

● The flow range can be divided into: experimental line, small batch production, and pilot line, etc.

●  Higher cost