Product Overview

Core Unique Technical Advantages

1. Low-Consumption Conical Screw Mixing System
   Miniature 5.3/7.4mm dual conical screws made of high-hardness alloy steel (54HRC) achieve full intermeshing uniform shearing. Variable spiral pitch structure effectively avoids high-viscosity polymer backflow and material overflow; built-in recirculation loop enables repeated internal kneading without repeated feeding, greatly improving mixing homogeneity for filled, flame-retardant and composite materials. Only gram-level samples are required for each test, ideal for expensive functional additives and lab trial formulations.
   2.Dual Constant Control Modes & Real-Time Rheology Monitoring

   Supports two core operation logics: constant rotation speed and constant torque control. The industrial touch HMI synchronously displays real-time screw torque, shear stress, shear rate and barrel multi-zone temperature curves, automatically recording full-process rheology data for subsequent formula performance analysis. Operators freely switch single-cycle kneading, timed circulation and continuous extrusion modes to match diverse test standards.
   3.Full Open Barrel Design For Ultra-Fast Cleaning

   The barrel assembly can be fully opened 180 degrees after cooling, exposing the complete screw structure without disassembly of complex transmission parts. Operators quickly scrape residual materials with simple tools, eliminating cross-contamination between different formulas; matched water cooling pipeline shortens barrel cooling waiting time between batches and improves daily lab testing throughput.
   4.Wide Temperature Range & Corrosion Resistant Structure

   Multi-section independent electric heating modules support working temperatures from room temperature up to 350℃, with customized 500℃ high-temperature version for special high-performance polymers. Barrel inner wall treated to 64HRC hardness, resisting strong acid, alkali and abrasion from ceramic, metal powder modified materials, stable long-term operation of corrosive polymer formulas without dimensional deformation.
   5.Modular Expandable Multi-Function Workflow

   Unified quick-disconnect outlet interface can be matched with supporting auxiliary equipment: micro melt spinning winding unit for fiber preparation, lab cast film stretching unit for thin film forming, small injection mold set for specimen molding. One host realizes compounding, extrusion, spinning and film-making multi-process testing, saving lab equipment investment and countertop space.
   6.Compact Desktop Integrated Layout

   All-in-one vertical body design with total machine weight only 30kg, standard 220V household power supply without special industrial wiring. Equipped emergency stop button and over-temperature automatic power-off safety interlock, fully meeting the safety operation requirements of university teaching laboratories and enterprise R&D rooms.

Standard Complete Test Operation Workflow

1. Equipment Preheating & Inspection
   Power on the touch control system, set multi-zone barrel temperature according to polymer melting point, wait for temperature stabilization. Open the barrel to check screw cleanliness, confirm no residual material from previous experiments.
2. Raw Material Feeding & Circulation Setting
   Weigh the required gram-level sample and pour into the top feeding hopper, close the barrel locking mechanism. On the touch panel, set screw speed, torque limit and circulation kneading duration, select constant speed or constant torque test mode.
3. Internal Circulation Kneading Process
   Start the drive system; the conical screws convey materials into the reflux channel for cyclic shearing mixing. The host records real-time torque and temperature data automatically, simulating industrial twin-screw compound shear environment.
4. Continuous Extrusion Molding (Optional)
   After reaching preset mixing time, close the circulation channel, switch to continuous extrusion mode. Connect matched auxiliary unit (spinning winding / film casting) to complete fiber, thin film or strip specimen forming.
5. Data Storage & Curve Export
   After finishing testing, stop the screw drive, save the full-process rheology curve and parameter records to local storage, export data via USB for formula comparative analysis and technical report compilation.
6. Barrel Cleaning & Equipment Shutdown
   Cool the barrel to below 80℃, fully open the barrel body to clean screws and inner wall, close heating and power supply after complete cleaning and cooling.

Wide Industrial & Research Application Fields

University & Polymer Research Institutes

Automotive & Aerospace Material Labs

New Energy & Electronic Material Fact

Film & Fiber Manufacturing Enterprises

Colorant & Functional Additive Industry

Complete Technical Specification Table

Matching Modular Auxiliary System Introduction

1. KR-742 Micro Melt Spinning Unit

   Support single/multi-filament winding and secondary stretching, matched with the extruder outlet to prepare polymer fiber samples for tensile, thermal shrinkage performance testing. The winding speed and stretching ratio are digitally adjustable, complete with automatic tension control structure.

2. KR-740 Micro Cast Film Auxiliary Machine

   Integrate extrusion die, three-roller cooling shaping and automatic winding mechanism, used to prepare thin cast film specimens of PE, PP, TPU, EVA and composite materials for transparency, tensile and barrier property testing.

Standard Factory Delivery Package

1. KR-739 micro conical twin-screw compounder main unit
2. Interchangeable 5.3mm & 7.4mm alloy conical screw sets
3. Multi-zone independent heating temperature control system
4. 7-inch bilingual touchscreen intelligent control cabinet
5. Full open barrel quick locking assembly & cleaning tools
6. Complete water cooling circulation pipeline fittings
7. Multilingual operation manual & factory calibration inspection certificate
8. Optional melt spinning / cast film auxiliary unit (separate configuration)

Global Distributor & After-Sales Support

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