High-Efficiency PP Lunch Box Recycling System Crushing Washing and Drying

Product Description

Product Description

PP LUNCH BOX WASHING RECYCLING LINE
According to statistics, China generates an average of about 25 million tons of plastic food container waste annually, with only 250,000 tons being recycled, accounting for just 1%. The unrecycled and untreated waste has a significant impact on the natural environment. Thanks to the characteristics of PP lunch box and continuous advancements in recycling technology, plastic food containers can not only be recycled but also have considerable recycling value and development potential.
Food, clothing, housing, and transportation are the fundamentals of human life. However, with the rapid development of China's internet food delivery market, a large amount of packaging waste has been generated in the food delivery industry, causing serious environmental pollution. The cleaning fragments are free from yellow spots and oil stains, have minimal odor, and can be processed into first-grade granules. These granules have various applications, including thermoforming, injection molding, and fiber production, offering significant recycling value and contributing to environmental regeneration.
After years of technical iteration and upgrading, the company combines the needs of the lower market and customers, and provides immersive deep cleaning through innovative design of hot washing process, which effectively solves the problem of reducing the generation of powder in the crushing and cleaning stage of waste PP food boxes, and also reduces the use of industrial cleaning agents in oil removal.

Application material

Process

The following is a special design scheme for pp lunch box washing and recycling equipment**, covering the whole process of washing, crushing and regeneration, which is suitable for the scene of lunch box recycling and reuse:

I. Core process of PP lunch box recycling and cleaning equipment **
Objective: The used PP lunch box will be cleaned and broken down into recycled plastic pellets (rPP) to realize circular economy.
Full process in stages:
1. Sorting and removing impurities → 2. Pre-washing → 3. Deep washing → 4. Crushing and dewatering → 5. Melting and granulation
Ii. Key equipment configuration and function
1. Sorting and pre-treatment section
Manual/automatic sorting station
-Remove non-PP materials (such as PS, PET, aluminum foil, etc.) and severely contaminated lunch boxes.
-Upgrade options: infrared spectrometer (NIR) automatically identifies materials.
-Remove the label and glue residue of the meal box.
2. Cleaning section
-Coarse crusher
-Break the lunch box into pieces to improve cleaning efficiency.
-Hot washing tank (de-oiling)
-Add alkaline cleaning agent at temperature 70-90ºC to remove grease and organic matter.
-Friction cleaning machine
-High speed rotating friction removes attached stains, combined with high pressure spraying.
-rinsing bath
-Circulating water washing + flotation separation (removal of density impurities).
-spin-drier
-Centrifugal dehydration to moisture content <5%.

3. Regenerated granulation section
-Fine crusher
-Further crush the fragments to 3-5mm particles.
-Melt extruder
-Temperature control 180-220ºC, filter impurities in the melt (the accuracy of the filter is less than 80 mesh).
-dicing cutter
-Uniform RPP particles are produced for injection molding of new meal boxes.
 

1. Technical difficulties and solutions

question	Rx
Oil stains are serious	Multi-stage hot washing + biological enzyme cleaning agent (food grade)
The label is difficult to separate	High temperature water tank + mechanical friction stripping
Impurities affect the purity of regeneration	Flotation separation + melt filtration (multi-layer filter)
High energy consumption	Waste heat recovery (such as drying section heat used for preheating cleaning water)

Iv. Environmental protection and safety requirements
1. Waste water treatment
-Oil and water separator + sedimentation tank should be configured, and the pH should be adjusted to neutral before discharge.
2. Waste gas treatment
-Install activated carbon adsorption device in the molten section (to avoid VOCs escape).
3. Noise control
-The crusher is equipped with a sound insulation hood, which is the basis for equipment vibration reduction.

V. Cost and benefit analysis
-Cost: about 800,000-1.5 million yuan for small and medium-sized production lines (1-2 tons/hour).
-Operating cost: power consumption is about 0.5-0.8kWh/kg, water consumption is about 1-1.5 tons/ton raw material.
-Output value: The price of recycled PP particles is about 60-70% of the new material (which needs to pass food grade certification).
Upgrading options (increasing added value)
-High purity sorting: electrostatic sorting machine removes metal/non-PP plastics.
-Food grade certification: high temperature vacuum deodorization process is added to meet FDA/EFSA standards.
-Intelligent monitoring: PLC system monitors parameters such as cleaning degree and melt pressure in real time.
If you need more detailed plans (such as layout diagram or equipment brand recommendation), you can provide specific requirements (such as daily processing capacity, site size, etc.).

Product Parameters

 

Model	Capacity (kg/h)	Power (kw)	Space (m2)	Compressed air (m3/min)	Water (m3)
PE/PP1000	1000	150	700	0.5	2
PE/PP2000	2000	230	1000	0.5	3
PE/PP3000	3000	290	1500	0.5	3

 

Detailed Photos

Installation Instructions

Customer case

1. PP PE plastic film washing machine POLYRETEC

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2.High Efficiency 500kg/h Rigid Plastic recycling system POLYRETEC
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3.The 1500KG/H PE Film& PP Woven Bag Recycling Washing Line
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4.High Efficiency 1000kg/h Rigid Plastic recycling system Polyretec
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Machinery.We equiped with crusher and hot friction washer with patent for battery/blue drum /oil pot washing effect,the final rigid flakes'
water content is about 1%, the glue and label paper totally removed,which can meet the requirements of granulation line.
Located in shanghai

5.ThePTW600 pesticide bottle recycling line POLYRETEC .Pesticides are agricultural chemicals used to prevent pests and diseases and regulate plant growth. They are widely used in agriculture, forestry and animal husbandry production, environmental and household hygiene to prevent pests and epidemics, and industrial products to prevent mould and moths. There are many kinds of pesticides, which can be divided into insecticides, acaricides, rodenticides, nematicides, plant growth regulators, etc., according to their uses. According to the bottle material, it is divided into three categories: PET bottles, pure HDPE bottles and bottles with barrier layers. Many pesticide bottles are produced in farming every year
Located in shandong province ,china

6.the 500KG/H LDPE LLDPE HDPE Plastic Film Washing Machine
LDPE LLDPE HDPE plastic film washing line make the clean film scraps,which can be raw material for making high quality pellets.The recycled pellets can be used to make blown film,plastic bottle,injection plastics etc.
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7.Post-Consumer Plastic Film Recycling Washing Line
Post-consumer plastic waste pollution is a headache problem in worldwide.POLYRETEC is devoted to developing the best solution for plastic recycling.The line consists of metal conveyor,shredder ,crusher,screw loader,floating tank,friction washer,floating tank 2,Squeezing dryer.Final moisture in 5%.
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8.The PTW500kg/h Efficiency Washing line For LDPE Film With Stickers
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9.Waste PP Jumbo Bag Recycling Washing line
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10.PP Woven Bag Washing recycling Machine
The PP woven bag washing line can wash the woven bag scraps,It provide output capacity 300-1000kg/h.Mainly include shredding,rinsing,friction washing,squeezing dryer processes.

11.the fiber grade 1000KG/H PET Flakes Washing Machine line.
One of the most famous plastic recycling company bought the PET washing line from POLYRETEC.PET  recycling  has  a  huge  market.We  are   involved  in  developing  our
technology in PET washing and Pelletizing. Located in Rawanda


12.The PTW500kg/h Efficiency Washing line For PP BAGS
We   using   more   reasonable   design-technics   to   help   our   client   achieve   better quality.Equiped with heavy duty shredder and beater machine,which can ensure high
out put and run steadily for more than 10 years. Located in Jakarta ,Indonesia

13.  Soft film sorting system  POLYRETEC
The PTW3000 shredding and sorting system provides customer with a complete recycling solution.All process are fully automated and labour costs are reduced     .
Located in China

FAQ

1. Are you trading company or manufacturer?
We are factory. 
2. Do you provide samples? is it free or extra?
Yes, we could offer the sample for free charge but do not pay the cost of freight. 
3. Do you accept customization?
OEM can be acceptable. We can produce according to your indicators. 
4. How long is your delivery time?
Generally it is 5 - 10 days if the goods are in stock. or it is 15 - 20 days if the goods are not in stock. 
5. What is your payment terms?
T/T, Western Union, Paypal etc.