Plastic bottle recycling production line mainly includes plastic bottle label removing machine, plastic crusher, plastic washing machine, dryer, plastic pellet extruder, cooling tank, cutting machine, etc.This plastic recycling production line is mainly used to deal with waste mineral water bottles, cola bottles, plastic bottles made of PET, PP and other materials. The Shuliy Group can match different production lines, design factories, and calculate factory areas according to customers’ different production needs, uses, and raw materials.
How are recycled plastic bottles reused?
Many people may wonder where the recycled plastic bottles have gone? In other words, many people know that plastic bottles can be recycled, but they don’t know what they can do after recycling?
- Recycled plastic bottles can be used to make textile materials, such as polyester, RPET cloth, etc., and then made into gloves, mattresses, etc.
- Waste plastic can also be made into new plastic products by melting and granulating. Generally speaking, almost all colored plastics contain recycled materials.
- After multiple processing or prolonged UV irradiation, plastics will cause problems such as aging and viscosity reduction. This waste plastic can also be recycled for RDF power generation. Due to the high heat value of plastic, the power generation effect is very ideal.
What steps are involved in plastic recycling?
Picking plastics of different materials — removing bottle caps, trademarks — crushing — cleaning — drying — melting, granulating — cooling — pellet cutting — storage
Picking table — plastic bottle label removing machine — plastic crusher — plastic washing machine — drying / dewatering machine — plastic pellet making machine — cooling tank — plastic pellet cutting machine — storage bin
Step 1: Picking (picking table)
The picking table is actually a conveyor belt with side rails on both sides. The purpose of setting the picking table is to pick out plastics of different materials and impurities. Raw materials are placed in the middle of the conveyor belt, and the workers place the selected impurities outside the side rails. This step can further ensure the purity of the raw materials.
Step 2: Remove the bottle cap and trademark (plastic bottle de-labeling machine)
Generally, the bottle body of a plastic bottle is made of PET, the cap is made of PP, and the trademark is made of PVC. If mixed together for recycling and granulation, it will cause changes in chemical properties, making it difficult to recycle again.
The plastic bottle de-labeling machine can remove the label on the mineral water bottle in a short time. Inside the fuselage, there are alloy blades that are constantly rotating, and a certain angle is formed with the main shaft, which can effectively remove the label on the plastic bottle. The removal rate can reach 99%.
Step 3: Crushing (plastic crusher)
The crusher can break materials of different shapes into smaller plastic pieces for easy cleaning and feeding. There is a high-speed rotating cutter inside the crusher, which is suitable for processing a variety of plastic materials, such as PP, PE, PVC, PET. The knife design is reasonable, and the size of the finished product is even.
Step 4: Cleaning (floating washing machine)
Most recycled plastic bottles are not clean and require cleaning. This plastic washing machine is also called a floating washing machine, which is mainly composed of a water tank, agitator, drain, motor and so on. After the plastic debris enters the water tank, the agitator begins to stir, and after cleaning the debris, it is discharged out of the cleaning tank.
Step 5: Drying and dehydration (dryer)
After the plastic is washed, it must be dewatered and dried. The quality of the final product is closely related to the water content, such as: surface cracking, light reflection, and reduced mechanical properties such as impact resistance and tensile strength. Therefore, the control of moisture content is crucial for the production of high-quality plastic granules.
There are two main types of dewatering machines, vertical dryers and horizontal dryers. The horizontal dryer has a better dehydration effect, but it does not have a feeding function. There is a screw feed rod in the vertical dewatering machine, which can transport the dehydrated materials to the inside of the plastic granulator. Both dehydrators use the centrifugal principle to dewater.
Step 6: Granulation (plastic granulator)
Plastic granulator is mainly composed of auxiliary machine and main machine. After the plastic sheet is melted by the main machine, it enters the auxiliary machine, and a plastic strip is formed at the mold of the auxiliary machine. The important components of this machine are the heating coil and the mold. There are various heating methods for the heating coil, electromagnetic heating coil, quartz heating coil, ceramic heating coil, etc. The mold has a hydraulic mold and a common mold.
Step 7: Cooling (cooling tank)
The cooling tank is mainly made of stainless steel and is a rectangular water tank. It can ensure that the machine does not produce rust in contact with water for a long time. The material enters from one end of the cooling tank, and after water cooling, it comes out from the other end.
Step 8: Cutting off (granules cutting machine)
The model of the pellet cutting machine is mainly divided according to the length of the cutter inside the machine. The cutter is an important component of the pellet cutter. After special processing, the blade is sharp and durable. The cutter length is between 160-300mm. Users can choose according to their needs.
Step 9: Storage (Storage Bin)
The prepared plastic pellets can be shipped directly or temporarily stored. There is a suction pump in the lower part of the storage bin, which can automatically suck the plastic particles, eliminating manual labor.
Prospects of the plastic bottle recycling industry:
A large part of the production of plastics depends on petroleum. The recycling of plastics is the recycling and utilization of petroleum resources.
From a macro perspective, the prospects of the plastic bottle recycling industry are very optimistic. At present, the main recycling industries include waste metal recycling, waste paper recycling, waste rubber recycling, and waste plastic recycling. The reuse rate of waste metal can reach 70-80%, the waste rubber can reach 47%, and the waste paper 20-30%. However, the reuse rate for plastic is less than 30%.
Therefore, the recycling market of waste plastics is still very broad. Combined with the global attention to environmental protection, resource conservation and other issues, the development potential of plastic recycling industry will only grow.
Common problems of plastic bottle recycling equipments:
- What is the output of this production line?
Answer: Generally speaking, the production range of this production line is 200-500 kg per hour. The maximum output can reach more than 1 tons per hour.
- Does your company have a machine that can recycle plastic foam?
Answer: Of course. We are a professional manufacturer of plastic recycling equipment, with equipment for recycling various plastics. Recycling plastic foam does not require cleaning.
- What is the energy consumption of a PET granulation production line of 500 kg per hour?
Answer: Processing one ton of material consumes 60 kWh of electricity.
Why waste plastic bottle recycling machine become more and more popular?
1). Many waste PET plastic bottles are produced every day, which causes great pollution to the environment. Recycling the waste is good for protecting environment.
2). Turn waste plastic bottles into treasures, it has a widely used.
3). Save resources and promote the development of the industry.