Solutions
LEWA ecoflow and LEWA triplex process diaphragm pumps offer optimum properties for the polymerization process in EVA reactors:
- Hermetically tight: no contact with oxygen, no crystallization of the vinyl acetate copolymers
- Larger series of LEWA process pumps or LEWA pump skids are used for larger EVA reactors
- Highest system availability (> 97%) due to pump synchronization
- Large control ranges with high accuracy for setting the individual density of the EVAC
Areas of application
EVA is used in its pure form or with variable proportions of polyethylene and vinyl acetate in various areas, e.g:
- Films for industrial, agricultural or food applications
- Flexible hoses, pipes or cables
- Adhesives
- Coatings for solar cells
- Packaging
- Shoes
- Powder coatings, emulsion paints and polishes
Background
What is EVA?
EVA(C) is the abbreviation for "Ethylene Vinyl Acetate (Copolymer)". It is a plastic made from polyethylene and vinyl acetate copolymers or monomers. The polyethylene is obtained in so-called EVA reactors through the polymerization of ethylene gas.
Polyethylene is the most widely used plastic in the world. In most cases, petrochemical ethylene gas is used as the raw material. However, ethylene gas produced by dehydrating bioethanol can also be used.
Polyethylene is available in different densities. The density determines the properties, such as the weight or resistance of the material.
EVA is a plastic that is used to manufacture products that need to be soft and flexible. It is available as granules, aqueous dispersion, powder, but also as film material. The plastic has a high heat resistance and good ageing resistance.
Industries
Pumps and Metering Packages for the Petrochemical Industry
We have supplied durable pumps and metering systems for applications such as the hydrocracking process for over 50 years. Petrochemicals generate starting products for the manufacture of plastics, pharmaceuticals, colorants, detergents, and other products. Contact our experts and allow us to provide you with detailed information about metering and pumping solutions for the hydrocracking process!
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Chemical Pumps and Metering Packages for the Chemical Industry
When critical, environmentally hazardous, toxic, or flammable fluids and suspensions need to be reliably conveyed or metered in high-pressure processes, there is no alternative to hermetically sealed metering pumps, process diaphragm pumps, and metering systems from LEWA. Hermetically sealed LEWA pumps with pressures up to 1200 bar are the first choice for the production of chemical intermediate and end products. Contact our experts and let us advise you about your individual chemical pump or system solution!
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Pumps and Systems for the Plastics Industry
We offer you special expertise for all compounding processes in the plastics processing industry (addition of waxes, flame retardants, and lubricants). Contact our experts! We're happy to give you advice about metering and pumping solutions for the plastics industry such as in polyethylene processing.
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LEWA ecoflow® Diaphragm Metering Pump
LEWA ecoflow: The Innovative Universal Metering Pump with DPS Diaphragm Protection. Trusted across all industries, this modular system pump excels in a wide range of applications. Experience unparalleled versatility and reliability with our ecoflow, the ultimate choice in metering pump technology.
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LEWA ecoflow®: Process Pumps for High-Pressure Applications
The innovative ecoflow diaphragm process pump excels in high-pressure applications across industries including oil and gas, refinery, petrochemicals, pharmaceuticals, biotechnology, and food and beverage production.
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LEWA triplex®: Compact Process Pumps for High-Pressure Applications
The LEWA triplex process diaphragm pump stands out as one of the world's most compact high-pressure pumps, ideal for installation in confined spaces. Renowned for its robustness, it has demonstrated exceptional performance across various high-pressure processes in multiple industries.
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LEWA Pump Skids
Ready-to-operate, custom-designed pump units with a small-footprint design. We choose all the pumps, materials, and accessories for these pump skids.
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