Granulator Plastic Recycling: the Core Equipment for Sustainable Development
Release time:
2025-04-17 15:39
The importance of granulator plastic recycling
As the global plastic pollution problem intensifies, granulator plastic recycling becomes the key equipment for circular economy. By heating and melting waste plastics (e.g. film, bottle flakes, industrial waste) and cutting them into uniform granules, such equipment helps companies to regenerate resources and reduce carbon emissions. Currently, China's plastic recycling granulator technology has been among the world's forefront, while the international market demand continues to grow. This article will combine domestic and international technology trends and market data to comprehensively analyse equipment selection, application scenarios and future development direction.
Granulator plastic recycling working principle and technology classification
Core Process
The operation of granulator plastic recycling is divided into four major steps:
- Crushing and cleaning: waste plastics are pre-crushed and impurities are removed.
- Melt Extrusion: The plastic is plasticised by means of a screw heating system.
- Filtering and decontamination: metal or grit is filtered by means of a screen changer.
- Pelletising and moulding: the melt is extruded through the die and then pelletised by the pelletiser.
Equipment Type and Applicable Scenarios
- Low-speed plastic pelletiser: suitable for handling high viscosity materials (e.g. PP, PE) with low energy consumption and uniform granules.
- Twin-screw granulator: for engineering plastics or mixed wastes with better mixing effect.
- Underwater pelletising system: for high-precision PET bottle flakes recycling with smooth pellet surface.
Global Granulator Plastic Recycling Market Trends
Domestic Market Demand and Technical Breakthrough
According to the statistics of China Renewable Resources Association, China's waste plastic recycling volume will exceed 18 million tonnes in 2023, which will drive the market size of China plastic recycling granulator machine to grow by 12%. Domestic equipment dominates the market in Southeast Asia and Africa by virtue of its cost-effective advantage. For example, Wintech stretch film rewinder with granulation production line can increase the recycling rate of waste stretch film to 95%.
International Policies and Technological Innovation
The EU's Plastics Strategy requires all plastic packaging to be recyclable by 2030, pushing companies in Germany and Italy to develop intelligent pelletising systems. Data from the US NREL laboratory shows that the energy consumption of the new low-speed plastic granulator is 30% lower than that of the traditional model, and the noise is reduced by 20dB.
How to choose a high-efficiency granulator plastic recycling
Comparison of key performance parameters
Parameter | Ordinary model | High-end model |
Capacity (kg/h) | 100-300 | 500-1200 |
Energy consumption (kW-h/kg) | 0.35-0.5 | 0.2-0.3 |
Applicable materials | PE/PP film | Mixed plastics, engineering plastics |
Degree of automation | Manual screen changing | Intelligent PLC control |
Equipment Selection Recommendations
- Film waste: match with stretch film machine pre-crushing, choose single-screw granulator.
- Rigid plastics: give priority to twin-screw models to ensure uniform melt.
- Small scale recycling plant: choose low speed plastic granulator to reduce maintenance cost.
Application Cases and Benefit Analysis of Plastic Granulators
Successful Case: Wintech Stretch Film Rewinder Linkage Recycling System
A European logistics company adopts Wintech stretch film rewinding machine and supporting pelletising line to achieve closed-loop recycling of waste film. The annual processing capacity reaches 2,000 tonnes, reducing raw material procurement costs by 35% and achieving 99.2% granule purity.
Environmental protection and economic win-win
- Emission reduction benefit: Reduce CO₂ emission by 1.5 tonnes per tonne of regenerated pellets (Source: Bureau of International Recycling).
- Payback period: Small and medium-sized production lines pay back in about 8-14 months.
Industry Challenges and Future Development Direction
Technical bottlenecks and solutions
- Impurity treatment: Integrated AI sorting system to enhance raw material purity.
- Energy Consumption Optimisation: Adopting electromagnetic heating technology, energy saving rate increased by 40%.
Policy and Industry Chain Synergy
China's ‘14th Five-Year Plan’ Action Plan for Plastic Pollution Control explicitly calls for expanding the production capacity of renewable plastics and promoting the export standardisation of China's plastic recycling and granulation machines. At the same time, enterprises need to co-operate with film stretchers and packaging manufacturers to establish a closed-loop recycling network.
The core value of granulator plastic recycling
Pranulator plastic recycling is not only an environmental technology carrier, but also a core tool for enterprises to achieve green transformation. From low speed plastic granulator to intelligent production lines, equipment upgrades will continue to promote the development of global circular economy. Through reasonable selection and technological innovation, the waste plastic recycling industry will create greater environmental and economic benefits.
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