In the entire chain of polymer material processing, testing and R&D, precise equipment support is the key to the realization of quality and improvement of efficiency. The GRAEFF series of instruments and equipment focuses on the two core links of precision processing and performance testing. Leveraging its advantages of accurate data, stable performance and strong scenario adaptability, it not only meets the professional needs of individual links, but also forms a collaborative workflow to provide all-dimensional solutions for various industries.

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Extrusion Molding Series Equipment

Extruders are processing equipment for chemical fiber, plastics, rubber, food and other materials. Materials are heated and forced through dies to form target profiles. A typical extruder consists of feeding system, heating system, extrusion head, die and cooling system. During extrusion, raw materials are heated to molten state, extruded through the extrusion head for shaping, and then cooled and solidified in the cooling system. Accurate measurement and control of melt pressure and temperature are critical throughout the process.

Laboratory Extruder

Laboratory extruder is a core pilot‑scale equipment bridging new‑material R&D and industrial mass production. Balancing experimental flexibility and production stability, it is well‑suited for university research, corporate formulation modification, process debugging and small‑batch trial production.

It precisely controls key parameters including temperature, pressure and extrusion speed to steadily complete melting, plasticating and extrusion forming of polymer materials. It can rapidly verify formula feasibility, identify process defects and effectively avoid risks in mass production. Suitable for trial production of modified pelletizing, general‑purpose profiles, films, pipes and precision medical products, it serves as vital equipment for polymer material R&D implementation and process iteration optimization.

Micro‑Extruder

Micro‑extruder is an ultra‑compact precision test equipment designed for micro‑quantity R&D and pre‑experimental debugging of polymer materials. Compared with conventional laboratory extruders, it consumes less material, features faster start‑stop response and higher precision for fine‑tuning parameters. It can carry out initial formula tests, modification effect verification and preliminary exploration of process parameters without large sample loads.

Featuring compact structure and easy operation, the equipment quickly meets early‑stage R&D and testing requirements for new materials and formulations. It greatly reduces the waste of expensive modified raw materials and shortens the test iteration cycle. It is widely applied in university research projects, corporate pre‑research of new materials and small‑sample testing of high‑end modified materials.

Application Fields

GRAEFF extrusion machinery delivers outstanding performance and is widely applied in plastic product processing, plastic modification & compounding, pipe‑and‑sheet production, food and pharmaceutical packaging, auto‑parts manufacturing, petrochemical industry, as well as R&D experiments in universities and research institutes. With reliable operation and superior forming quality of finished products, our equipment has gained recognition and trust from numerous enterprises and research institutions worldwide.

Medical Field

Serving as a core production and R&D tool for precision medical products including infusion tubes, interventional catheters and medical packaging films: Medical products have stringent requirements for material homogeneity and dimensional accuracy. The plastic extruder ensures uniform material plasticization with its stable extrusion capability; when paired with melt sensors, it can real-time monitor and control melt pressure and temperature, and adjust process parameters synchronously. It not only meets the mandatory standards for medical-grade biocompatibility and physical properties, but also adapts to the R&D and trial production of small-batch customized medical products.

Plastic Production Field

Suitable for the mass production of general plastic products such as pipes, films and cable sheaths: It achieves continuous material molding via a high-temperature and high-pressure extrusion process, and ensures the dimensional consistency of products with precise process control. This effectively reduces the occurrence of defects such as wall thickness deviation and air bubbles, while improving production efficiency and product yield.

Petrochemical Field

The plastic extruder acts as a processing carrier for petrochemical-derived plastic raw materials: It can implement the full process of melt plasticization and continuous molding for various plastic raw materials produced by the petrochemical industry, adapts to the processing characteristics of different materials, and facilitates the conversion of raw materials into formable finished products.

Research and Testing Field

Colleges and Research Institutions: Used for the process research of polymer materials, assisting in analyzing the logical correlation between material properties and extrusion parameters.

Commodity Inspection and Quality Inspection Departments: Serving as a professional device for the compliance testing of plastic products, it reproduces the production process to verify whether the products meet the industry standards.

Melt Flow Indexer

The Melt Flow Indexer (also known as the Melt Flow Rate Tester) is a professional testing device for determining the Melt Mass-Flow Rate (MFR) of polymer melts. By precisely controlling temperature and load, it quantifies the flow performance of molten materials. Its core features are accurate testing, easy operation and reliable data, which provides core data support for material quality evaluation and process adaptation.

Application Fields

Pelletizing Industry

It is an essential tool for the quality control of raw material and finished product pellets: During the pelletizing process, melt flowability (MFR) directly determines pellet uniformity and process adaptability. The device can rapidly measure the MFR differences of raw materials from different batches, helping enterprises screen raw materials with stable performance and optimize pelletizing process parameters, avoid problems such as pellet agglomeration and uneven dimensions caused by flowability fluctuations, and ensure the continuous and stable operation of pelletizing production lines.

Plastic Processing Enterprises

It is used in incoming material inspection and process adaptation stages: Prior to the production of plastic products, raw material properties are controlled in advance by testing the MFR values of raw materials; meanwhile, the process parameters of processing equipment can be adjusted based on MFR data to achieve precise matching between material properties and processing technologies, and reduce the production defect rate.

Rheometer

Rheometer is dedicated equipment for in‑depth R&D of polymer materials. Different from the single‑point test performed by melt flow index tester, it enables scanning under multiple shear rates and temperature conditions, accurately detecting melt viscosity variations and various rheological properties to generate complete rheological curves.

It is mainly applied in new‑material formula development, modified‑material adjustment and analysis of complex process issues. It can realistically simulate extrusion and injection‑molding working conditions, providing accurate data support for high‑end material R&D and process upgrading.

About GRAEFF

GRAEFF is a British multinational company specializing in the research and development, production and sales of pressure sensors, temperature sensors, melt pressure sensors, intelligent sensors, flow sensors, displacement sensors, liquid level sensors, pressure and temperature control instruments, pressure gauges, pressure and temperature calibration systems, and automation control systems.