Plastics Applications

Optimizing Efficiency and Precision in Plastics Manufacturing with Advanced and Reliable Solutions

Driven to support plastics manufacturers in achieving operational excellence

Rotary and diverter valves play a vital role when it comes to optimizing material flows in compounding and plastics processing. They ensure efficient handling of all sorts of bulk solids throughout the entire production - from pellets to powders. At the same time, both the plastics and the chemical industry pose unique challenges, including high temperatures, abrasive materials as well as the need for precise control and minimal downtime due to cost pressure. The design of these valves must accommodate all these requirements while enhencing durability and facilitating easy maintenance for uninterrupted production and thus reduced operational costs. By using robust materials, integrating advanced engineering and innovative solutions with the operators in mind, Coperion rotary and diverter valves have proven themselves in these harsh conditions. Decades of experiences with more than 15,000 different bulk materials and our know-how acquired through the design as well as installation of plants in the plastics industry, allow us to give the right recommendations for your process. Thanks to our comprehensive portfolio which goes beyond rotary and diverter vales as well as our holistic view, we are able to offer powerful components for every process stage. 

Your challenge is our motivation

Integrated Thinking for End-to-End Plastics Processing

Coperion’s comprehensive process know-how in the plastics industry enables us to take a holistic view of your operation. We don’t see components as isolated units, but as integrated parts of a complete system. Because we also provide solutions for the entire process, we’re able to offer well-rounded, system-level advice. Our customers benefit from working with experts who understand the bigger picture and discuss their challenges at eye level.

Plastics and Chemical Applications

The production of polyolefins, such as polyethylene and polypropylene, involves the precise handling of powders and granules to create high-performance plastics that are ultimately used for different products. Rotary and diverter valves are essential components in this process, ensuring controlled, reliable flow of materials between reactors, dryers, and storage systems. Rotary valves provide consistent metering and airtight sealing, preventing contamination and material loss. Diverter valves enable the flexible routing of resins to different processing or packaging lines without interrupting operations. 

When it comes to the production of engineering plastics (e.g. polyamide, polycarbonate or PEEK) for a variety of end uses, precise handling of often sensitive materials is required. Rotary and diverter valves are crucial in ensuring contamination-free transfer throughout the different stages including compounding, drying, and conveying stages. While rotary valves deliver consistent flow control of additives and reinforcing agents, diverter valves allow seamless switching between process lines. 

In plastics compounding, polymers are blended with additives, fillers and colorants to achieve the desired end results. Precise and efficient material handling plays a key role in plastics processing which includes the installation of rotary and diverter valves. They not only ensure a consistent flow, but also accurate dosing of powders, pellets, and liquids throughout the process. Rotary valves support uniform feeding into extruders and mixers, while maintaining system pressure and preventing leaks. Diverter valves enable flexible routing of materials between lines, reducing downtime and cross-contamination. 

Plastics recycling involves handling a wide range of materials. This varies from shredded waste (mostly in the form of flakes or fibres) and finally reprocessed pellets. Rotary and diverter valves are essential for maintaining consistent flow and preventing contamination throughout sorting, washing, drying, and reprocessing stages. Rotary valves ensure reliable material control from one process step to another. Diverter valves provide flexible routing between process steps, allowing efficient switching between material streams.

Chemical manufacturing involves the precise handling of powders, granules, and liquids under strict safety and purity standards. Rotary and diverter valves are critical for controlling material flow in processes such as mixing, reaction, drying, and packaging. Rotary valves ensure accurate feeding, while preventing leaks and contamination. Diverter valves on the other hand enable safe, flexible routing of materials between process lines or storage systems. 

Coperion's Components Competencies in the Plastics Industry

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18 Jan 2024

Infographic: Comparing the ZXD and ZRD Rotary Valves

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Coperion Rotary Valve ZAQ 700

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15 Apr 2024

ZAQ Rotary Valves: New Size for Even Higher Throughputs

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Coperion Compact Design FFU Universal Gate Valve

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11 Sep 2024

New Coperion Compact Design FFU Universal Gate

Press Release
WZK Diverter Valve infographic teaser image

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18 Jan 2024

Infographic: The Original WZK Two-Way Diverter Valve from Coperion

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Coperion Rotary Valves - Purge Gas Consumption

Newsletter

02 May 2023

Rotary Valves: New Purge Gas Seal Allows Significant Reduction of Purging Gas Consumption

Newsletter

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18 Jan 2024

Safety for Components in ATEX Environments

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Coperion has experience with various applications in the plastics industry. With our innovative solutions and a variety of customization options, we are confident to find the right components for your needs.

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