What is the typical density range of IXPE/XPE and non-crosslinked PE foam?
Short answer: IXPE/XPE foams typically range between 25–200 kg/m³, while non-crosslinked PE foams (Warmlex) are usually 18–45 kg/m³, depending on the application and grade.
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Density is one of the main indicators of material strength, flexibility and durability. This article explains how density ranges differ between irradiation-crosslinked, chemically crosslinked and non-crosslinked PE foam.
Typical density ranges
The main categories of PE foam supplied by LIRIDA-M cover the following ranges:
- IXPE / physically crosslinked (Isolon 500): 25–200 kg/m³;
- XPE / chemically crosslinked (Isolon 300): similar ranges in higher and lower density grades;
- Non-crosslinked PE (Warmlex): usually 18–45 kg/m³.
Note: Density is not “good or bad” by itself. Higher density does not automatically mean higher performance – it depends on the application (flooring, construction, packaging, HVAC, machinery).
What affects density choice?
— insulation performance and load;
— application type (flooring, walls, pipes, packaging);
— mechanical requirements (compression, recovery, vibration dampening);
— adhesive or multilayer construction.
Frequently asked questions
- Does higher density always mean higher strength? Not necessarily. It depends on the structure of the foam and the type of load.
- Can you supply custom density? Yes. We can discuss available grades for your project.
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