{"id":1840,"date":"2026-05-02T18:35:56","date_gmt":"2026-05-02T10:35:56","guid":{"rendered":"https:\/\/e-shion-machinery.com\/?post_type=products&p=1840"},"modified":"2026-05-02T19:34:01","modified_gmt":"2026-05-02T11:34:01","slug":"%e0%b9%80%e0%b8%84%e0%b8%a3%e0%b8%b7%e0%b9%88%e0%b8%ad%e0%b8%87%e0%b8%9a%e0%b8%94%e0%b8%9e%e0%b8%a5%e0%b8%b2%e0%b8%aa%e0%b8%95%e0%b8%b4%e0%b8%81%e0%b9%80%e0%b8%9b%e0%b9%87%e0%b8%99%e0%b9%80%e0%b8%a1","status":"publish","type":"products","link":"https:\/\/e-shion-machinery.com\/th\/products\/plastic-granulating-machine\/","title":{"rendered":"\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14"},"content":{"rendered":"

Why Choosing the Right Plastic Granulating Machine Matters for Your Recycling Business<\/h3>\n\n\n\n

If you\u2019re in the plastic recycling industry, you know that the quality of your pellets determines your profit. Whether you\u2019re processing HDPE, LDPE, or PP scrap, a \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> is the heart of your operation. After years of visiting factories and comparing dozens of models, I\u2019ve narrowed down the seven most important factors you must evaluate before making a purchase. This guide is based on a real specification sheet for a well-engineered unit (the SJ<\/strong> series), but the principles apply to any \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> you consider.<\/p>\n\n\n\n

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1. Material Compatibility \u2013 HDPE, LDPE, and PP<\/h3>\n\n\n\n

Not all granulators can handle different types of polyolefins. A good \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> must be designed for both rigid and flexible materials. The SJ<\/strong> series, for example, processes HDPE, LDPE, and PP block scrap. This versatility means you can accept a wider range of input material, reducing your sorting costs. Ask your supplier: \u201cCan the machine run both film and rigid scrap?\u201d If the screw design isn\u2019t optimized for mixed materials, you\u2019ll end up with inconsistent melt quality.<\/p>\n\n\n\n

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2. Automatic Screen Changer \u2013 Cut Downtime<\/h3>\n\n\n\n

Manual screen changes are a productivity killer. The best \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> includes a quick motor-operated filter screen replacement unit. This allows you to change the screen without stopping the extruder, keeping your line running. The SJ<\/strong> series features this as standard. Without it, you could lose 20\u201330 minutes every hour. When comparing machines, always check if the screen changer is motorized and can handle continuous operation.<\/p>\n\n\n\n

External Resource:<\/strong>
Learn more about screen changer technology from Nordson \u2013 Filtration Solutions<\/a> (DoFollow link).<\/p>\n\n\n\n

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3. Temperature Control \u2013 Consistent Pellet Quality<\/h3>\n\n\n\n

Melt temperature fluctuations cause poor pellet shape and degradation. A modern \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> uses automatic temperature control with PID or better. The SJ<\/strong> series includes multi-zone heating control, ensuring each section of the barrel stays within \u00b12\u00b0C. This is critical when processing PP, which has a narrow processing window. Ask the supplier how many temperature zones are controlled independently.<\/p>\n\n\n\n

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4. Synchronized Pelletizing \u2013 No Jams<\/h3>\n\n\n\n

The pelletizing unit must match the extruder output speed. Cheap machines use a fixed-speed cutter, leading to overfeeding or undercutting. The SJ<\/strong> series uses an adjustable speed motor for the pelletizer, synchronized with the extrusion speed. This ensures clean, uniform pellets and prevents knife wear. A \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> with proper synchronization dramatically reduces fines and dust.<\/p>\n\n\n\n

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5. Throughput Capacity \u2013 Match Your Target<\/h3>\n\n\n\n

Throughput is often the first thing buyers look at. The SJ<\/strong> series offers models from 150\u2013500 kg\/hr, covering small to medium recycling lines. But don\u2019t just take the number \u2013 ask under what conditions. A \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> rated for 300 kg\/hr with one material may only do 200 kg\/hr with another. Request a test run with your own scrap.<\/p>\n\n\n\n

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6. Machine Build and Durability<\/h3>\n\n\n\n

A heavy machine is a stable machine. The SJ<\/strong> series weighs 5.5 to 8.5 tons, indicating a solid steel frame that reduces vibration at high speeds. Lightweight granulators (under 4 tons) often flex, causing misalignment in the screw and barrel. Check the screw L\/D ratio as well \u2013 the SJ<\/strong> series uses 28:1 to 32:1, which is optimal for mixing and degassing. A \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> with a good L\/D ratio produces better pellets with fewer volatiles.<\/p>\n\n\n\n

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7. Energy Efficiency \u2013 Lower Operating Cost<\/h3>\n\n\n\n

Electricity is your largest variable cost. The SJ<\/strong> series main motor ranges from 30 to 90 kW depending on the model. Compare this with older units that consume 20\u201330% more power for the same output. Also, look for using frequency inverters on the main motor. The SJ<\/strong> series includes this for smooth start-up and energy savings. A \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> with VFD control can reduce your kWh per ton significantly.<\/p>\n\n\n\n

Internal Link:<\/strong>
For more tips on reducing energy costs in recycling, read our guide: How to Cut Power Consumption in a Plastic Recycling Line \u2192<\/a><\/p>\n\n\n\n

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Technical Specifications (Based on SJ Series)<\/h3>\n\n\n\n

Below are the detailed parameters of a typical \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> series. Use them as a benchmark when evaluating suppliers.<\/p>\n\n\n\n

\u0e41\u0e1a\u0e1a\u0e08\u0e33\u0e25\u0e2d\u0e07<\/th>SJ100 100<\/th>SJ120 120<\/th>SJ140 140<\/th>SJ150 150<\/th><\/tr><\/thead>
Screw Diameter<\/td>100\/100mm<\/td>120\/120mm<\/td>140\/140mm<\/td>150\/150mm<\/td><\/tr>
Screw L\/D Ratio<\/td>28:1\u201332:1<\/td>28:1\u201332:1<\/td>28:1\u201332:1<\/td>28:1\u201332:1<\/td><\/tr>
Screw Speed<\/td>10\u2013100 rpm<\/td>10\u2013100 rpm<\/td>10\u2013100 rpm<\/td>10\u2013100 rpm<\/td><\/tr>
\u0e01\u0e33\u0e25\u0e31\u0e07\u0e44\u0e1f\u0e1f\u0e49\u0e32\u0e02\u0e2d\u0e07\u0e21\u0e2d\u0e40\u0e15\u0e2d\u0e23\u0e4c\u0e2b\u0e25\u0e31\u0e01<\/td>30 kW<\/td>55 kW<\/td>75 kW<\/td>90 kW<\/td><\/tr>
Output<\/td>150\u2013200 kg\/hr<\/td>200\u2013250 kg\/hr<\/td>300\u2013350 kg\/hr<\/td>450\u2013500 kg\/hr<\/td><\/tr>
\u0e19\u0e49\u0e33\u0e2b\u0e19\u0e31\u0e01\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07<\/td>5.5 T<\/td>6.5 T<\/td>7.5 T<\/td>8.5 T<\/td><\/tr>
Cover Dimension<\/td>6000\u00d710000\u00d71800mm<\/td>6500\u00d710000\u00d71800mm<\/td>7000\u00d710000\u00d71800mm<\/td>7500\u00d710000\u00d71800mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

All models feature automatic temperature control, motorized screen changer, and synchronized pelletizer. When you request a quote, confirm that the \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> meets these specs for your target material.<\/p>\n\n\n\n

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Key Peripheral Equipment for a Complete Pelletizing Line<\/h3>\n\n\n\n

A high-efficiency granulation line is more than just the main extruder. The peripheral equipment directly affects your final pellet quality and production continuity. Here are the standard peripherals included with the SJ<\/strong> series:<\/p>\n\n\n\n

    \n
  • Cutting Type \u2013 Die Face Cutting (Water Ring)<\/strong>
    The SJ<\/strong> series uses a water ring die face cutting system. It cuts the melt directly at the die face as it exits, producing uniform pellets with minimal dust. Compared to strand cutting, it handles higher melt flow materials better and requires less floor space.<\/li>\n\n\n\n
  • Dewatering Device \u2013 Vertical Centrifuge (7.5 kW)<\/strong>
    After cutting, the pellets pass through a vertical centrifuge dewaterer. The 7.5 kW motor spins off surface moisture, significantly reducing the drying load. This is essential for producing low-moisture pellets ready for bagging or further processing.<\/li>\n\n\n\n
  • Vibrating Screen \u2013 Two-Layer (8mm\/2mm apertures)<\/strong>
    A two-layer vibrating screen separates oversized pellets and fines. The top deck with 8mm mesh catches large particles, while the 2mm bottom deck removes dust. This ensures your final product meets strict size specifications.<\/li>\n\n\n\n
  • Storage Hopper \u2013 500 kg Capacity<\/strong>
    A 500 kg storage hopper collects the finished pellets, allowing continuous operation without frequent manual unloading. It also acts as a buffer between the granulator and downstream packaging or blending equipment.<\/li>\n<\/ul>\n\n\n\n

    These peripherals are not just add-ons \u2013 they are integral to achieving high efficiency. When comparing a \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong>, always ask if the package includes these key components or if they are optional.<\/p>\n\n\n\n

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    Conclusion<\/h3>\n\n\n\n

    Investing in a \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> is a major capital decision. Focus on material compatibility, automatic screen changing, temperature control, synchronized pelletizing, throughput, build quality, and energy efficiency. The SJ<\/strong> series serves as an excellent benchmark for a well-designed machine, but the same evaluation criteria apply to any model you consider.<\/p>\n\n\n\n

    Before signing, visit the supplier\u2019s factory, run trials with your own material, and verify the spare parts availability. A good \u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1a\u0e14\u0e1e\u0e25\u0e32\u0e2a\u0e15\u0e34\u0e01\u0e40\u0e1b\u0e47\u0e19\u0e40\u0e21\u0e47\u0e14<\/strong> pays for itself within 12\u201318 months through higher output and lower maintenance.<\/p>\n\n\n\n

    \"Modern<\/figure>\n\n\n\n

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