Ethafoam® 700, a closed-cell polyethylene foam with a nominal density of 105 kg/m³ (7.0 pcf), is one of two heavy-duty grades in the Ethafoam® range.
Due to its high density, Ethafoam® 700 offers excellent compressive strength and provides vastly superior load-bearing support compared to standard grades. As a result, it resists deformation under immense concentrated weight and extreme mechanical stress, while still offering a lighter alternative to wood or rubber blocks. These properties make it ideal for heavy-duty industrial cushioning, packaging, and dunnage applications.
However, many businesses often over-specify the foam they use, needlessly adding weight and cost to their packaging. At Polyformes, our experts can provide advice on the most cost-effective foam that still provides the required performance, supplying both raw material and converted products/packaging.
The data presented for Ethafoam® 700 relates to the unfabricated polyethene foam product. While values shown are typical of this product, they should not be construed as specification limits. These are given to the best of our knowledge and should be considered as guidance for selecting a suitable grade for a given application. Please contact our foam experts for further advice if required.
A summary of key information for Ethafoam® 700 foam material is as follows:
| Property | Test Standard | Typical Value |
|---|---|---|
| Density | ASTM D3575-08 ISO 845:2006 | 105 kg/m³ |
| Compressive Strength (vertical @ 25%) | ASTM D3575-08 Suffix D ISO 7214:2007 | 270 kPa |
| Compressive Strength (vertical @ 50%) | ASTM D3575-08 Suffix D ISO 7214:2007 | 400 kPa |
| Compressive Set (50%) | ASTM D3575-08 Suffix B ISO 1856:2000 | < 15 |
| Compressive Creep (%) (1000 hrs) | ASTM D3575-08 Suffix BB | < 10 @ 70 kg/dm2 |
| Tensile Strength (@ peak (MD/CD)) | ASTM D3575-08 Suffix T ISO 1798: 2008 | 500 / 718 kPa |
| Tear Strength (MD/CD) | ASTM D3575-08 Suffix G | 52 / 13 |
| Water Absorption | ASTM D3575-08 | < 1 % |
| Thermal Stability | ASTM D3575-08 Suffix S | < 2 % |
| Static Decay* (Anti-Static Grade) | EIA Std. 541 Append. F | < 2 sec |
| Surface Resistivity* (ohms ⁄ sq) (Anti-Static Grade) | EIA Std. 541 Section 4.3 | 1.0 × 10⁹ – 1.0 × 10¹² |
*Please see datasheet for full details.
Download the datasheet (PDF format) for full technical details.
Please note that due to individual display settings, the colours you see on your screen may vary slightly from the actual material colour.
*Yellowing: While Ethafoam® is very stable, prolonged exposure to high heat or UV light during storage may cause minor discolouration.
White
Polyformes can split/skive, laminate and butt-weld Ethafoam® planks to the specific dimensions you require. MOQs may apply to certain size/material options.
Please get in touch with a member of our team to discuss your requirements.
Ethafoam® 700 foam is suitable for conversion using the following processes:
Ethafoam® 700, whilst primarily used for protective packaging, may also be suitable for the following applications. Please note, however, that this list is not exhaustive – if you cannot see your intended application, please get in touch to discuss your options with our foam experts.
By sourcing your foam material from Polyformes, you can expect several benefits.
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