COEX flex3
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Coextrusion system for the production of 3 layer blown film FLEXIBILE – MODULAR – EFFICIENT

B A Film coextrusion is becoming more and more widespread in the packaging industry and is quickly replacing monolayer film production. Today, companies that invest in a new film extrusion system typically choose a 3-layer co-extrusion line with the highest output engineered into the center layer which optimizes productivity and line flexibility. Always in tune with the industry needs, Macchi introduced at the Plast 2000 exhibition in Milan, the innovative series of COEX flex® extrusion systems, which immediately met with huge success. Macchi’s COEX flex® compact extrusion systems are...

Primary Standard Components • A/C Motors exhibiting low energy consumption, minimum maintenance and a greater quality control • Bi-metallic Extrusion Barrels an inherent high resistance to wear and corrosion • Infrared Barrel Heating power saving up to 20%, long heater element life and quicker cooling response times • Air Ring and IBC Blowers filtered and insulated for noise and dust control. All motors are inverter controlled • Technologically Advanced Electrical Components focusing on the main drive speed control, the advantages represent a cleaner and more efficient electrical...

Feedscrew, Screenchanger and Die Technology The feedscrews are a barrier type, designed for optimum performance in processing a wide variety of materials including LDPE, LLDPE, EVA, Metallocenes, PP, PS, PA resins and the major HDPE resins available on the market today. Particular attention has been paid to the consistency of our manufacturing processes and the quality of materials in order to guarantee a long and productive life span. Custom coated bimetallic screws perfected by Macchi after many years of experience are available as an option. The screenchangers are a prime consideration...

This is due mainly to: • approximately 30% less material contained inside the die than with standard designs. This leads to quicker and more efficient material changes. • lower operating pressures while maintaining maximum output rates. This allows greater flexibility in processing a wider variety of materials even with high viscosity. • the integrated IBC system is completely independent from the heated components of the line, allowing for the least amount of heat exchange to take place and reducing any chance of gauge variation due to temperature variables. • all layer flow paths are kept...

Application of the Macchi COEX flex® Group At present, there exist three different sizes of the Macchi COEX flex® unit: small, medium and large. They have been designed also to easily substitute a typical monolayer extruder and transforming the line into a co-extrusion system while limiting the cost of the investment. With this up-grade, improved gauge uniformity due to the new die technology and increased production due to the IBC system present on the medium and large models are guaranteed. The complete line is available in different versions by using various components and configurations...

Modular roboticized systems have been designed in order to entirely automate the production process and to guarantee a safe work place. Gravimetric systems Macchi gravimetric systems have been designed to be compact, practical and easy to integrate with the extruders. Control systems Macchi COEX flex® group is complete with world-wide available quality electrical components and operator control console. Many of the operating systems available today can be integrated into these production controls. Modular and expandable, Macchi’s EASY CONTROL® is one of the most complete production managing...

13400 mm 9350 mm Typical layout where the COEX flex® group can be fitted on high-tech coextrusion lines up to 3200 mm, or simple lines with BSA automatic winders. The content of this catalogue is for informative purposes only. All data concerning technical specifications and production rates granted depend exclusively on contractual agreements. Macchi S.p.A. - 21040 Venegono Inferiore (VA) Italy - via Papa Paolo VI, 5 - Tel. +39 0331 827.717 - Fax. +39 0331 827.750 email: macchi@macchi.it - www.macchi.it Rev.004-11/05 www.bonobodesign.it 16000 mm 14500 mm