Foam Extrusion
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Foam Extrusion

● Environment-friendly micro foaming technology of high added-value.
● Environment-friendly carbon dioxide can be foaming agent to develop microcellular plastic foaming products of equal diameter.
● Explosion-proof is not needed because it is not like the physical foaming agent of hydrocarbon which is explosive and flammable.
● It is environment-friendly technology because of its low effect of greenhouse gases on the earth compared to physical foaming agents of hydrocarbon.
● It has advantage of recycling because it is not like poisonous chemical foaming agents which creates residues.
● It provides high functional foam forming.
● Foaming technology of supercritical inactive gases makes microcellular formed in microns.
● It can also be applied to the foaming of crystallized resins etc. which is difficult in foaming of high multiplying factors in the past.
With addition of optical emission etc., the supercritical foaming character of adjustable bubble diameters can develop reflector plates and insulation materials etc.

 

PET Foam Borad Production Line

In April 2019, “Dry-free PET reactive extrusion foaming integrated molding technology” passed the expert identification organized by China Light Industry Assication.



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PP Foam Sheet Extrusion Line

The properties of polypropylene (PP) foam materials are highly controllable. From high-rigidity boards to soft foamed films, PP can be used.



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PBAT Foam Bead Extrusion Line

Can use commercially available biodegradable raw materials and some of the production offcuts for direct foaming and molding, which greatly reduces energy consumption and production cycle time, and can significantly reduce raw material inventory and significantly improve production stability.

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Types of Main Foaming Equipments

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

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

 

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

Suitable for: PE, PS, PP ...

 

Downstream 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 times

● Bead die head → strand cooling → hauling and pelletizing → screening
Foaming ratio: 10-35 times

● 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

 

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

3~40 (adjustable)

 

Products

PP-foaming-sheets
PP foaming sheets
High-foam-PP-sheets
High foam PP sheets
High-foaming-PP,-PLA-boards
High foaming PP, PLA boards

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