plastic extrusion process

You need a machine that turns raw plastic pellets into pipes, films, or profiles , continuously, reliably, and without melting down your budget. The plastic extrusion process is the workhorse of modern manufacturing, and the right extruder makes all the difference. Below are ten manufacturers that deliver real performance, starting with our top pick for mid-size recycling and pipe plants. Table of Contents 1. Plastivo Extrusions (Our Top Pick) — Indian Supplier for Screw Barrels, Recycling & Pipe Plants 2. Coperion — Best for Engineering Plastics & High-Torque Twin-Screw Compounding 3. KraussMaffei — High Free Volume & Torque for Compounding Plants 4. Leistritz — Pharma HME, R&D & Pilot-Scale Customization 5. Bühler — Complete Industrial Food & Feed Extrusion Lines 6. Bausano — PVC Pipe & Profile, Medical Tubing Specialization 7. JSW — Japanese Precision, Devolatilization & Reactive Extrusion 8. Kobe Steel — Tire & Rubber Compounds, Continuous Mixing 9. Steer Engineering — Pharma HME, Masterbatch & R&D Twin-Screws 10. Davis-Standard — North American Service & Durability for Sheet/Profile Comparison Table: Top Extruder Manufacturers for Plastic Extrusion Process Frequently Asked Questions Conclusion 1. Plastivo Extrusions (Our Top Pick) — Indian Supplier for Screw Barrels, Recycling & Pipe Plants If you run a mid-size recycling, pipe-making, or compounding line, Plastivo Extrusions is the only vendor on this list that openly builds and supplies all the key machine components in-house: nitrided and bimetallic screw barrels, single and twin-screw extruders, pelletizers, and complete recycling plants for PET, LDPE, HDPE, and mixed plastics. Based in Ahmedabad, Gujarat, they serve customers across India, Africa, the UAE, and Southeast Asia. Their parallel twin-screw barrels are engineered for PVC, WPC, and engineering-grade polymers, and their vented screw barrels handle moisture-sensitive recycled materials effectively. Explore their twin-screw extruder lineup. Key Takeaway: Plastivo Extrusions combines screw barrel manufacturing with complete extrusion plant design, making them a one-stop partner for processors in emerging markets. 2. Coperion — Best for Engineering Plastics & High-Torque Twin-Screw Compounding Coperion’s twin-screw extruders are the gold standard for compounding engineering plastics like PA, PC, PBT, and glass-fiber-reinforced grades. They deliver torque densities up to 18 Nm/cm³, meaning they can mix high-filler loads at lower screw speeds, saving energy and reducing melt temperature. A modular design allows quick screw and barrel changes for different formulations. Coperion also offers loss-in-weight feeders and downstream pelletizing systems. The downside? Pricing is high, and lead times can stretch beyond six months for custom configurations. Pro Tip: If you process large volumes of glass-filled nylon or polycarbonate, Coperion’s high-torque build reduces cycle times and increases throughput by up to 30% compared to standard twin-screws. 3. KraussMaffei — High Free Volume & Torque for Compounding Plants KraussMaffei’s twin-screw extruders balance high free volume and high torque, making them ideal for compounding operations that need both shear-sensitive mixing and high throughput. Their machines handle engineering plastics, masterbatches, and PVC dry blends. The company also supplies complete compounding plants with feeders, pelletizers, and cooling systems. However, their service network in Africa and South Asia is thin, so on-site support may lag. 4. Pharmaceutical HME & Continuous Manufacturing Extruders Pharmaceutical hot melt extrusion (HME) and continuous manufacturing require specialized twin-screw extruders built to cGMP standards. These extruders typically offer torque control, stainless steel frames, and SCADA integration for FDA-compliant production. They range from lab-scale to production capacities and can also perform wet granulation and melt extrusion for thermolabile APIs. Designed for R&D and pilot-scale customization, they enable formulation development and scale-up. The catch: they are expensive and niche, not suitable for general recycling or pipe lines. 5. Bühler — Complete Industrial Food & Feed Extrusion Lines Bühler supplies end-to-end extrusion lines for food, pet food, and aqua feed. Their twin-screw extruders combine cooking, shaping, and drying in a single pass. They are not designed for commodity plastics, but if you process biopolymers or starch-based compounds, Bühler’s lines offer high throughput (up to 10 t/h) and exceptional product uniformity. Lead times are long, and the price tag reflects the food-grade engineering. 6. PVC Pipe & Profile, Medical Tubing Extrusion Several manufacturers produce twin-screw extruders specifically for PVC pipe and profile extrusion. These machines often feature proprietary drive systems for consistent torque, and integrated software enables real-time monitoring of gelling temperature and predictive maintenance. The same manufacturers also offer medical-grade tubing lines and wood-plastic composite (WPC) extrusion systems. The limitation of these machines is their focus on PVC and WPC; for polyolefins with high filler loads, other machine types are more suitable. 7. JSW — Japanese Precision, Devolatilization & Reactive Extrusion JSW serves buyers who prioritize Japanese-grade precision, ultra-large devolatilization, polymer alloy compounding, GF/CF reinforced engineering plastics, and reactive extrusion. However, JSW machines are premium-priced and mostly sold to Japanese or Korean-owned plants; service in Africa and the Middle East is limited. 8. Kobe Steel — Tire & Rubber Compounds, Continuous Mixing Kobe Steel’s extrusion technology combines continuous mixing with their variable clearance mixing to control residue time and power input. This is ideal for tire compounds, rubber profiles, and polymer alloys. Their machines are built tough for 24/7 operation. But they are heavily focused on rubber and elastomers , you won’t see them in PVC pipe or film lines. 9. Steer Engineering — Pharma HME, Masterbatch & R&D Twin-Screws Steer Engineering (India) makes twin-screw extruders for pharmaceutical HME, masterbatch with shear-sensitive pigments, and halogen-free flame retardant compounds. Their machines are popular in academic R&D labs and for pilot-scale production. Steer offers good value for money, but their throughput capacities are lower than European and Japanese competitors, and their global service network is still growing. 10. Davis-Standard — North American Service & Durability for Sheet/Profile Davis-Standard is a go-to for buyers in North America who prioritize local support and fast parts delivery. Their customizable accumulator head blow molding systems and rubber extruders are rugged, with screw designs optimized for polyolefins and engineering thermoplastics. They offer retrofits and rebuilds for extended machine life. The downside: their base machine cost is higher than Asian alternatives, and they lack