Supercritical Fluid Foaming
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Supercritical Fluid Foaming

Supercritical Fluid Continuous Extrusion Foaming Technology

 Use carbon dioxide gas, nitrogen, etc. as foaming agents in harmony with the environment, and use their supercritical 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 foaming of crystalline resins that have been difficult to foam at high rates in the past.

 Unlike hydrocarbon-based physical 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 foaming technologies and equipment for thermoplastic materials such as PP, PET, PLA, and TPU.



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PP foaming sheets

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High foam sheets

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High foaming PP, PLA sheets



Foaming lines layout

Foaming lines layout

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


Types of main foaming equipments

 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 ...


Auxiliary equipments

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


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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

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Specification

Machine size

CBF-20

CBF-50

CBF-100

CBF-150

CBF-300

CBF-500

Throughput Rate

~20kg/h

~50kg/h

~100kg/h

~150kg/h

~300kg/h

~500kg/h

Foaming ratio

3~35 (adjustable)


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