LEWA ecofoam - the metering system for blowing agents in extrusion processes_2018

Product catalog summary

Introduction
The LEWA ecofoam system is designed for precise metering of blowing agents in extrusion processes, ensuring consistent product quality. It is suitable for agents like butane, CO₂, halogenated hydrocarbons, pentane, and propane.

Performance Overview
- Pressure range: 50 bar to 500 bar
- Flow rate: 0.05 kg/h to 250 kg/h

Method of Operation
The system uses a diaphragm metering pump controlled by the extruder's speed. The LEWA smart control ensures accurate flow rate adjustments by comparing flow meter signals with guiding signals.

Benefits
- Consistent product quality with precise metering
- Faster response time with LEWA smart control compared to conventional PID controllers
- High productivity with long maintenance intervals
- Robust and reliable pump technology
- Expertise in switching between different blowing agents

Main Components
- LEWA diaphragm metering pump
- Strainer, pressure gauges, safety valve, mass flow meter
- Control cabinet
- Additional components for CO₂ applications: heat exchanger, cooling jacket, compact chiller

Testing System
LEWA offers a testing system for potential users to evaluate the system's quality and accuracy over a period of up to 6 weeks.

Application Examples
- Food package trays using polystyrene foam
- Foam granulate for transport boxes and insulation
- Insulation tubes using polyurethane and polyethylene foam
- Insulation boards using polystyrene and polyurethane foam

Contact Information
LEWA GmbH, Ulmer Str. 10, 71229 Leonberg, Germany
Contact: Roland Schwab
Phone: +49 7152 14-1299
Email: [email protected]
Website: www.lewa.de

Catalog excerpts

LEWA ecofoam The metering system for blowing agents in extrusion processes

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LEWA ecofoam LEWA ecofoam® The metering system for blowing agents in extrusion processes The metering of blowing agent is of particular importance to guarantee the constant quality of the end product in extrusion processes. LEWA ecofoam is a system for the metering of blowing agents, e.g. butane, CO₂, halogenated hydrocarbons, pentane and propane into the plastic melt of an extrusion process. Performance overview: Pressure 50 bar to 500 bar Flow rate 0.05 kg/h to 250 kg/h Method of operation: The guide signal to control the diaphragm metering pump is linked to the extruder‘s speed. The metering...

Open the catalog to page 2

LEWA ecofoam - the metering system for blowing agents in extrusion processes_2018-3

LEWA ecofoam Application examples in the plastics industry Food package trays: For the production of packaging trays polystyrene foam, short PS foam, is used. Foam granulate: Expanded Polystyrene, Polyethylene and Poly rethane, short EPS/EPP/EPE are used for u the production of foam granulate, reusable transport boxes, moulded impact absorber in automotive, and insulation tubes. Insulation tubes: For manufacturing of insulation tubes Polyurethane foam (PU foam) as well as Polyeth ylene foam (PE foam) are used. For the production of packaging foil, impact sound insulation, and cap liners Polyethylene...

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LEWA ecofoam - the metering system for blowing agents in extrusion processes_2018-4

© D6-101en, 03.2018, Subject to change without notice, Layout and origin: Germany Your local representative: LEWA GmbH Ulmer Straße 10 71229 Leonberg Germany Telephone +49 7152 14-0 Fax +49 7152 14-1303 [email protected] www.lewa.de

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