Fully Automatic Single Screw PET Belt Strapping Band Production Line
PRODUCT DESCRIPTION
PET PP strap is recognized a new environment protective strapping material to substitute for Steel Strap &PP Strap in the ruling international market.
They are not only the aggregation of the intensity and the tenacity of steel strap, but also overcome the disadvantage of the tradition packing material such as insufficient intensity, brittle and so on. At present, they have been applied in wood, steel, and so on.
Our company this line adopt the PLC control the whole line do the automatic production. It use the melting pump and pressure sensor ensure the production stable and strap quality control.
The raw material you can use 100% recycled PET flakes from the waste PET bottles, or virgin material or mixed with each other.
PET Strap Production Line Machine List
| Item |
Quantity |
| 1.Lifting mixing drying system and screw feeding system |
1 set |
| 2.450 type dehumidifier and drying crystallization tank |
1 set |
| 3. single screw extruder |
1 set |
| 4.high-power screen changer |
1 set |
| 5.metering pump with independent speed regulation system |
1 set |
| 6.Special mould for PET strap band |
1 set |
| 7.Cooling water tank |
1 set |
| 8.The first five-roller tractor |
1 set |
| 9.Stretching oven |
1 set |
| 10.The second five-roller tractor |
1 set |
| 11.Embossing machine |
1 set |
| 12.The third five-roller tractor |
1 set |
| 13.Cooling sizing system |
1 set |
| 14.The fourth three-roller tractor |
1 set |
| 15.Single station semi-automatic winding machine |
1 set |
PET and PP strap making machine introduction
- Pre crystallization drying unit
As PET is easy to absorb moisture in the air, it must be fully dried. At the same time, in order to prevent bonding during drying, crystallization equipment needs to be configured. PP strap not need it.
Always PET two straps extrusion needs 90/30 single screw extruder.
PP two straps extrusion needs 75/30 single screw extruder.
Special design screw structurer could extrude PET PP materials smoothl,it does not create excessive shear molecular structure, and ensures the strength of the packing belt
- Filter, Melt Pumb, Exrusion Die Unit
It is controlled by PLC pressure closed loop control system. The pressure sensor will transmit signals, and PLC is used to control the speed of melt pump and extruder, so as to stabilize the extrusion of PET or PP materials
- Water tank with first haul off rollers
PET is Length 4000mm, PP 2000mm.
It is stainless steel materials.
The water is heated by water tank heating unit
The haul off rollers is five rollers, working to take PET or PP strap materials out of water tank
The oven is heated by electric power. Heating air is spread evenly by fans.
In the oven, the PET and PP strap will be stretched first time.
This device is working for PET strap second time stretching.
PP strap not need stretching.
This 38Crmoal materials, high surface hardness rollers do embossing
- Annealing oven and cooling tank
As PET and PP materials has high deformation prestress after stretching. It has to do annealing and water cooling to fix the size.
It is working to take the materials out of annealing oven and cooling tank before winders
The winder could be designed into servo motor unit, inverter motor unit and torque motor according PET or PP materials.
The unique back tooth shaft is used to make the packing belts neatly arranged without overlapping and no horn shape, so that the packing belts maintain a good straightness, which is more suitable for the use of automatic packing machines, and ensures that the automatic equipment conveyor belts are in place. Do not drop the belt.
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