{"product_id":"laboratory-parallel-twin-screw-extruder","title":"Laboratory Parallel Twin-Screw Extruder","description":"\u003ch2\u003eLaboratory Parallel Twin-Screw Extruder QualiPTSE™ 21\u003c\/h2\u003e\n\u003cp\u003eThe QualiPTSE™ 21 Parallel Twin-Screw Extruder is a high-performance laboratory extrusion system designed for polymer compounding, formulation development, material modification, and small-batch production. Its modular configuration, precise process control, and scalable design make it well suited for research institutions, polymer R\u0026amp;D laboratories, universities, and quality control facilities.\u003c\/p\u003e\n\u003cp\u003eThis laboratory twin-screw extruder enables researchers to evaluate the effects of fillers, additives, and processing conditions on important polymer properties, including mechanical strength, thermal resistance, and flame retardancy. It also supports the development of customized polymer blends and the evaluation of new resin formulations under controlled processing conditions.\u003c\/p\u003e\n\u003ch2\u003eKey Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePlastic compounding and polymer modification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFiller reinforcement and additive dispersion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFlame-retardant polymer development\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-temperature polymer formulation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExperimental resin formulation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpecialty polymer development\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSmall-batch polymer production\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAcademic research and laboratory testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePilot-scale process evaluation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith its compact structure and adjustable processing parameters, the QualiPTSE™ 21 creates a controlled laboratory environment for evaluating new polymer formulations, optimizing extrusion conditions, and preparing processes for larger-scale production.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the QualiPTSE™ 21?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePrecise Process Control: Accurate adjustment of key processing parameters helps achieve consistent and repeatable test results.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFlexible Laboratory Processing: Suitable for formulation trials, material development, and small-batch production.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdjustable Parameters: Processing conditions can be configured for different polymer materials and formulations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEfficient Heating System: High-performance heating provides controlled thermal conditions during extrusion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSafety and Control Features: Integrated operating and safety functions support dependable laboratory operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eModular Configuration: Flexible system design allows the extrusion setup to accommodate different research and development requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you are developing new polymer materials, evaluating additives, optimizing formulations, or producing specialty polymer batches, the QualiPTSE™ 21 Parallel Twin-Screw Extruder provides precise processing control, flexibility, and reliable performance for laboratory polymer research and development.\u003c\/p\u003e\n\u003ch2\u003eStarve-Fed Conveying \u0026amp; Thermo-Mechanical Plasticating\u003c\/h2\u003e\n\u003cp\u003eThe QualiPTSE™ 21 Parallel Twin-Screw Extruder uses starve-fed conveying and multi-zone temperature control to provide consistent polymer processing. A screw metering feeder introduces polymer granules into the 20 mm screw channels at controlled feed rates, helping maintain stable material transport throughout the barrel instead of continuously filling the conveying section.\u003c\/p\u003e\n\u003ch3\u003eC-Shaped Chamber Transport\u003c\/h3\u003e\n\u003cp\u003eMaterial transport occurs through modular C-shaped chambers created by the rotating screw elements. These chambers support partially filled conditions in starve-fed conveying zones and fully filled conditions in melt-pumping sections across the extended 40:1 L\/D ratio.\u003c\/p\u003e\n\u003ch3\u003eSelf-Wiping Feed Geometry\u003c\/h3\u003e\n\u003cp\u003eThe feed section maintains the actual self-wiping screw-channel geometry used for solids conveying. This configuration supports accurate evaluation of heat transfer and shear conditions at the barrel interface while maintaining effective material movement through the processing zone.\u003c\/p\u003e\n\u003ch3\u003eMulti-Zone Thermal Control\u003c\/h3\u003e\n\u003cp\u003eDuring co-rotating twin-screw extrusion, early barrel sections may require heating, while downstream areas can require cooling as mechanical shear generates additional heat within the polymer melt. The QualiPTSE™ 21 uses a 6-zone electric heating system, Type K thermocouples, and an RKC temperature controller to provide precise thermal management.\u003c\/p\u003e\n\u003cp\u003eThe system maintains temperature accuracy of ±0.5°C up to 350°C, with temperatures up to 500°C available with high-temperature upgrades.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eComputational Flow \u0026amp; Devolatilization Simulation\u003c\/h2\u003e\n\u003cp\u003eUnderstanding polymer melt behavior inside an intermeshing twin-screw extruder requires analysis of non-Newtonian flow, shear gradients, temperature variations, and material residence conditions. For the QualiPTSE™ 21, these principles support screw-element configuration across a screw speed range of 1–200 rpm, including processing zones used for kneading, mixing, and degassing.\u003c\/p\u003e\n\u003ch3\u003e3D Kneading Block Flow Analysis\u003c\/h3\u003e\n\u003cp\u003eThree-dimensional CFD modeling of kneading blocks can account for the detailed geometry of the screw flights and the complex flow patterns generated between intermeshing screw elements. This includes cross-channel leakage flow that may not be fully represented by simplified continuous-flight models.\u003c\/p\u003e\n\u003ch3\u003eDevolatilization Surface Area Analysis\u003c\/h3\u003e\n\u003cp\u003eFinite element modeling using a 2.5D Hele-Shaw approach can evaluate melt fill levels and exposed melt surface area within starved barrel sections. This analysis provides a basis for understanding volatile removal and optimizing degassing performance through the integrated vacuum exhaust system.\u003c\/p\u003e\n\u003cp\u003eTogether, the conveying, thermal-control, flow-analysis, and devolatilization capabilities of the QualiPTSE™ 21 Parallel Twin-Screw Extruder provide a controlled platform for polymer compounding, process development, material formulation, and laboratory-scale extrusion research.\u003c\/p\u003e\n\u003ch3\u003eRelevant Simulation Approaches for Twin-Screw Extrusion\u003c\/h3\u003e\n\u003ctable class=\"table\" border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSimulation Setup\u003c\/th\u003e\n\u003cth\u003eCore Features\u003c\/th\u003e\n\u003cth\u003eProcess Application \u0026amp; Validation\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5D Hele-Shaw \/ FEM\u003c\/td\u003e\n\u003ctd\u003eEstimates fill profiles and devolatilization surface area in starved zones\u003c\/td\u003e\n\u003ctd\u003eTested with Toluene in Polypropylene, achieving a low 6.5% margin of error.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3D CFD (Impulse Transmission)\u003c\/td\u003e\n\u003ctd\u003eModels screw motion via fluid velocity vectors without dynamic mesh distortion\u003c\/td\u003e\n\u003ctd\u003eCalibrated on physical test rigs following ICH Q2 standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5D Flow Analysis Network\u003c\/td\u003e\n\u003ctd\u003eComputes axial and circumferential flow velocity profiles\u003c\/td\u003e\n\u003ctd\u003eVerified against high-density polyethylene experimental pressure data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eViscous Dissipation \u0026amp; Pressure Characterization\u003c\/h2\u003e\n\u003cp\u003eEffective thermal management during polymer compounding requires careful control of mechanical energy, viscous heating, and barrel cooling. The QualiPTSE™ 21 Parallel Twin-Screw Extruder supports operating pressures of up to 0–100 MPa and combines 6.4 kW heating capacity with compressed-air cooling to regulate thermal conditions during polymer processing.\u003c\/p\u003e\n\u003ch3\u003eEnergy Dissipation Analysis\u003c\/h3\u003e\n\u003cp\u003eDuring polymer plasticating, the total mechanical energy introduced into the material can be associated with several forms of energy dissipation, including friction between polymer pellets and surfaces, plastic deformation, and viscous shear heating. Evaluating these energy contributions within kneading sections helps researchers understand thermal behavior and reduce the risk of excessive heat exposure to temperature-sensitive additives.\u003c\/p\u003e\n\u003ch3\u003ePawlowski Element Characterization\u003c\/h3\u003e\n\u003cp\u003eThe screw elements can be evaluated using pressure coefficients (A1, A2) and torque coefficients (B1, B2) derived from experimental test-bench data. These parameters provide useful information for analyzing screw-element performance and supporting screw configuration optimization across 1,536 geometric design points.\u003c\/p\u003e\n\u003ch3\u003eAI-Assisted Parameter Selection\u003c\/h3\u003e\n\u003cp\u003eAI-based modeling can assist with the selection of key extrusion parameters by analyzing simulated twin-screw flow behavior. Depending on the application, these models can help identify suitable screw speeds, feed rates, and barrel temperatures for targeted polymer processing results, reducing the amount of trial-and-error testing required during formulation development.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eScale-Up \u0026amp; Residence Time Distribution (RTD)\u003c\/h2\u003e\n\u003cp\u003eThe QualiPTSE™ 21, with an output capacity of 1–15 kg\/h, can be used as a standalone laboratory extruder or integrated with torque rheometer systems to generate process data for polymer development and industrial scale-up.\u003c\/p\u003e\n\u003ch3\u003eMechanistic Scale-Up Models\u003c\/h3\u003e\n\u003cp\u003eMechanistic finite-volume models can incorporate non-isothermal rheology and detailed material chemistry to support formulation transfer from a 20 mm, 40:1 L\/D laboratory extruder toward larger production systems, including 75 mm production extruders.\u003c\/p\u003e\n\u003ch3\u003eResidence Time Distribution (RTD) Modeling\u003c\/h3\u003e\n\u003cp\u003eMechanistic Residence Time Distribution (RTD) models combined with backflow-cell methodology can characterize axial material dispersion and long-tail residence behavior associated with distributive mixing elements. This provides a more detailed representation of material residence characteristics than simplified continuous stirred-tank reactor assumptions.\u003c\/p\u003e\n\u003ch3\u003eTrue-Shape Feed Channels\u003c\/h3\u003e\n\u003cp\u003eMaintaining the actual self-wiping screw-channel geometry helps preserve the physical characteristics of the conveying section during process analysis. Accurate channel geometry supports more reliable calculations of heat transfer, material transport, and thermal behavior compared with simplified rectangular-channel representations.\u003c\/p\u003e\n\u003cp\u003eThe combination of pressure characterization, thermal analysis, screw-element evaluation, RTD modeling, and scale-up analysis makes the QualiPTSE™ 21 a versatile platform for laboratory polymer compounding, extrusion process development, and formulation research.\u003c\/p\u003e\n\u003ch2\u003eLaboratory Parallel Twin-Screw Extruder QualiPTSE™ 21 Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Diameter\u003c\/td\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew L\/D Ratio\u003c\/td\u003e\n\u003ctd\u003e40:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Speed Range\u003c\/td\u003e\n\u003ctd\u003e1 – 200 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeeding Method\u003c\/td\u003e\n\u003ctd\u003eScrew metering feeding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeating Method\u003c\/td\u003e\n\u003ctd\u003e6-zone electric heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Temperature\u003c\/td\u003e\n\u003ctd\u003e350°C (optional: 500°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Control System\u003c\/td\u003e\n\u003ctd\u003eRKC temperature controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeating Power\u003c\/td\u003e\n\u003ctd\u003e6.4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensors\u003c\/td\u003e\n\u003ctd\u003eType K thermocouples\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Capacity\u003c\/td\u003e\n\u003ctd\u003e1 – 15 kg\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Range\u003c\/td\u003e\n\u003ctd\u003e0 – 100 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExhaust Method\u003c\/td\u003e\n\u003ctd\u003eVacuum exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling Method\u003c\/td\u003e\n\u003ctd\u003eCompressed air cooling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":52989932405047,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/laboratory-parallel-twin-screw-e.webp?v=1789483765","url":"https:\/\/qualitest.us\/ar\/products\/laboratory-parallel-twin-screw-extruder","provider":"Qualitest USA LC","version":"1.0","type":"link"}