PET bottle washing line

PET Bottle Recycling Process:

De-baling→Metal Removal-→Label Removal--→Metal Removal--→Bottle Pre-washing→Optical Bottle Sorting→Manual Sorting→Crushing→Dust Removal-→Flotation Hot washing→Friction Washing→Rinsing→Flushing
Washing→Drying→Dust Removal-→Optical Flakes Sorting→Blending→Online Inspection-→Packing

PS. A standard sampling of food-grade/filament-grade PET bottle recycling process,equipment configuration and the process will be optimized according to raw materials.

Advantages

1. Solutions for diversification of input PET bottle bales.
2. Automatic de-baling technology, reduces labor, a strong bale breaking ability for high-density PET botle bales.
3. Effective PVC label removal.
4. Pre-washing and hot washing process to ensure the cleanliness of rPET flakes.
5. The hot washing process reduces impurities content to achieve high stable and reliable quality of rPET flakes.
6. Completed online water recycling treatment system.

Unit Introduction

Bale Unpacker. The unpacking machine in the washing line performs the following technical functions:

• Loading: A forklift is utilized to position the bottle bundles onto the designated platform.
• Strapping Removal: The strapping wire is manually cut and extracted to facilitate the unpacking process.
• Conveyance: The forklift then advances the bottle bundles onto the rubber belt conveyor for further transport.
• Speed Control: The unpacking process is regulated through frequency conversion and speed adjustment mechanisms to ensure optimal operational efficiency.

This sequence ensures the efficient separation and preparation of bottles for subsequent washing stages.

Trommel screen. The effect is to break up the lumps, sift out small garbage and part of the bottle cap.

Pre-washer. It aims to wash away the dirt and adhesive labels on the surface of bottle scraps that are delivered to the washing machine after being scattered by the unpacking machine with high-temperature agentia to and deliver the washed bottles to the next process with the double screw.

Label scrapping machine. The label scrapping machine is designed to scrap the labels attached to bottles. It mainly consists of feed section, rotor drum, nail tray, pedestal, lateral plate, discharge section and transmission device.

Label blower. Due to the weight difference between bottles and labels, labels are separated out by the wind force of the label blowing fan that is equipped to the discharge end of the drum of the blowing machine, brought into the label screen frame and collected by the trolley or blown to the wrapping machine; while bottles are outputted from the other end and delivered to the next process by the double-screw conveyor.

Optical bottle sorting section. Ecotekhnopark provides optical sorting machine and integraton solution by cooperating with well-known sorting device manufacturers across the world. On one hand, automatic opticalsorting macthine can reduce the mananement cost and man power requirement and on the other hand guaranteeing the stablity of sorting. Non-PET color bottles and metals can be detected and sorted out by NIR.optical sensor optical camera and metal detector in this section. lt provides guarantee the PET materials purity.

Wet crusher. Wet grinding featured with unhindered feeding, stable output, low energy consumption, low noise, and firm structure is adopted in this production line.

Floating Washer. Remove caps, dust, stone, impurities, chemicals.

Zig-zag label blower. Removing label dust, labels, powder. Maximum separation efficiency ~99%  - target PVC label content <10ppm depend on local raw material characteristics (thickness,label type).

Hot washer section:

• Smart control washing process
• Smart chemical dosing feeder
• Smart adding flakes and come out
• Smart injecting steam water
• Smart set heating time

Centrifugal dewater. Removing water and dry flakes into 1%. Efficient aspiration guarantees high quality,cleaning-free mesh saves manpower Driven by the shaft of the de-watering machine, the PET flakes reach a high-speed centrifugal state within the chamber, effectively removing water through the mesh.

Flakes sorting, blending and packing section. For high-grade PET flakes applications, automatic optical flake sorting unit is an indispensable module.The unit including automatic flake sorting eddy curent and pipe-type metal separator. These devices would maximize the removal of impurities before packing to ensure the stability of flakes quality. Flake with low impurity content and stable quality is a standard to measure PET recycling process. For the various quality factors during PET recycling process, blending equipment and on-ine detection device especially designed can ensure the various quality indicators to meet criteria and to make sure nosinale parameter exceeding the reauirement so that the quality of the flakes will be quaranteed. 0n-line weighing device can monitor real-time production flow. Packing unit by taking advantage of the shaking system specially designed, can make the packing of the flakes reach the fix weight and maximize bulk density which areatly reduce the packing and transportation costs.

Online circulating water filtration system. It is composed of water pump, circular vibration sieve and water tank. the water discharged from the machine is filtered out of labels and caps.The water is then sent to the next level of machine for use.

Vibrating packing Silo:

• Effective volume: 1.5m³
• Hydraulic lifters

DCS intelligent recycling line control system. Upper computer control system. Features:

• the production process is controlled in real time, and data
• monitor the operating status of the equipment in real time
• the system is equipped with an intelligent medical examination module to remind the equipment of regular inspection items in real time to avoid false or missed inspections.