In 2026, the global plastic recycling industry faces the challenge of mixed plastic waste—especially the large-scale generation of PP-PET mixed waste (e.g., PET bottles with PP caps). The PP granulator, a key piece of PP recycling equipment, has achieved significant technological breakthroughs in 2026, enabling effective separation and recycling of PP from mixed plastic waste and enhancing the recycling rate and value of plastic waste. This article focuses on the application of PP granulators in PET bottle recycling and the latest technological innovations in mixed plastic recycling.
PP granulator
The Role of PP Granulator in PET Bottle Recycling Chain
PET bottles are among the world’s most widely used plastic products, with a global annual output exceeding 50 million tons. However, most PET bottles are equipped with PP caps and labels, creating challenges for PET recycling due to mixed PP impurities. The PP granulator plays a key role in the PET bottle recycling chain by separating and granulating PP components from mixed waste, enabling resource utilization of both PP and PET.
The process of using a PP granulator in PET bottle recycling is as follows: 1. Sorting and crushing: First, sort collected PET bottles to remove non-plastic impurities (e.g., metal, paper), then crush the bottles into 1–5mm fragments. 2. Separation: Use a centrifugal separator to separate PP caps and labels from PET fragments based on density differences. 3. PP granulation: Send separated PP fragments to the PP granulator for melting, extrusion, and cutting to produce high-purity PP pellets. 4. PET recycling: Send separated PET fragments to a dedicated PET recycling line for further processing.
In 2026, PP granulators used in PET bottle recycling are equipped with a specialized decontamination system that removes residual adhesives and oil stains from PP fragments, achieving a decontamination efficiency of up to 99%. This ensures recycled PP pellets have a purity of over 99.5%, making them suitable for direct use in high-quality plastic product manufacturing and enhancing the economic value of recycled PP.
Technological Breakthroughs: PP Granulator Adapts to Mixed Plastic Recycling
In 2026, the PP granulator has achieved key technological breakthroughs in adapting to mixed plastic recycling, solving the low efficiency and poor product quality issues of traditional mixed plastic recycling methods.
First, integrated multi-functional sorting and granulation design. The latest PP granulator integrates sorting, crushing, and granulation functions, enabling direct processing of mixed plastic waste (containing PP, PET, and other components) without additional sorting equipment. Equipped with a high-precision near-infrared sorting module, the equipment accurately identifies and separates different plastic types with a sorting accuracy of up to 98.5%, improving recycling efficiency.
Second, optimized screw and barrel design. The 2026 PP granulator’s screw features a specialized multi-section structure that adjusts shear force and melting speed based on mixed plastic type, ensuring full melting and plasticization of PP components while preventing material degradation. The barrel is made of wear-resistant, corrosion-resistant alloy materials, withstanding mixed impurity wear and extending equipment service life.
Third, online quality monitoring technology. The PP granulator is equipped with online MFI and IV value detectors, real-time monitoring the melt index and intrinsic viscosity of recycled PP pellets to ensure compliance with industry standards. For example, the IV value of recycled PP pellets produced by the PP granulator can be stably maintained above 0.80 dL/g, meeting the requirements of high-end applications such as automotive parts and home appliances.
PP granulator
Environmental and Economic Benefits of Mixed Plastic Recycling with PP Granulator
The application of PP granulator in mixed plastic recycling delivers significant environmental and economic benefits. From an environmental perspective, recycling 1 ton of PP-PET mixed plastic waste reduces carbon emissions by approximately 2.5 tons, saves 3.8 tons of crude oil, and minimizes plastic waste pollution. In 2026, the global PET bottle recycling rate is expected to reach 65%, with the PP granulator playing a key role in promoting mixed plastic waste recycling in PET bottles.
From an economic perspective, recycled PP pellets produced by the PP granulator are priced at $2.5–3 per kg—30–50% lower than virgin PP resin. For PET bottle recycling enterprises, adding a PP granulator to process PP components in mixed waste increases additional income by 15–20% per ton of PET bottles recycled. For example, a PET bottle recycling enterprise with a daily processing capacity of 10 tons can increase daily income by $300–500 by recycling and granulating PP caps and labels.
FAQ: PP Granulator in PET Bottle and Mixed Plastic Recycling
- Q: Can the PP granulator separate PP from mixed plastic waste containing PET? A: Yes. The 2026 PP granulator is equipped with a high-precision sorting module, accurately separating PP from PET-containing mixed plastic waste with a separation accuracy of up to 98.5%.
- Q: What is the purity of PP pellets produced by the PP granulator in PET bottle recycling? A: Recycled PP pellets have a purity of over 99.5%, meeting the requirements of most plastic product manufacturing.
- Q: How much additional income can the PP granulator bring to PET bottle recycling enterprises? A: It increases additional income by 15–20% per ton of PET bottles recycled, serving as a significant profit growth driver for enterprises.
- Q: What is the processing capacity of the PP granulator in mixed plastic recycling? A: Small and medium-sized PP granulators have a processing capacity of 500kg–5 tons per day, meeting the needs of PET bottle recycling enterprises of all scales.
