Chemical processing buyers increasingly specify plastic foam products and cushioning instead of metal, wood or glass. Here is where they are used, why they work, and what to watch out for.
The notes below come from day to day production and export work with overseas buyers.
This category covers a family of products rather than a single item. In practice a buyer defines plastic foam products and cushioning by three things: the base resin, the format or dimension, and the performance or certification level it has to meet. Typical options in this category include sheet and roll form; density 15 to 200 kg/m³; moulded shapes. Materials most often specified are Polyurethane, Expanded Polystyrene, Ethylene Vinyl Acetate, Expanded Polyethylene, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.
In the chemical processing sector the decision is usually driven by chemical resistance and temperature resistance, with purity as a secondary requirement. Typical end uses include tank linings, valves, dosing pipework.
Typical values for a general purpose grade are listed below; filled, stabilised and speciality compounds will differ.
| Material | Density | Tensile strength | Service temperature |
|---|---|---|---|
| Ethylene Vinyl Acetate | 0.93-0.95 g/cm³ | 10-30 MPa | -40°C to 70°C |
| Polyurethane | 1.05-1.25 g/cm³ | 25-60 MPa | -30°C to 90°C |
| Expanded Polyethylene | 0.02-0.05 g/cm³ | 0.3-1.5 MPa | -40°C to 80°C |
Expanded Polyethylene is frequently the default selection here: EPE foam absorbs repeated impact, which is why it protects fragile goods in transit.
The list below covers both high volume and specialised uses.
Beyond the base resin, most suppliers offer UV stabilised, food contact, flame retardant, anti-static and recycled content versions of the same product. Ask which additive package is included, because it is often the difference between a part that lasts three years and one that lasts ten.
Each step below has its own control points, and skipping one of them is where most defects start.
Secondary operations such as printing, welding, machining and assembly are often cheaper to do in the same factory, and they reduce the risk of mismatch between components.
Use this checklist when comparing two or three supplier quotations.
Send this list to your supplier with the drawing and you will receive comparable quotations from every factory you contact.
Standard packing is export cartons on fumigation-free pallets, with custom labelling, barcode and retail packing available. We also handle consolidated containers and door to door delivery.
We can provide ISO 9001 quality system documentation, material certificates, RoHS and REACH statements, and where applicable food contact, flame retardancy or drinking water approvals. Tell us your target market and we will match the document set.
Yes. Standard samples are normally free of charge and shipped within three working days; custom samples are charged at cost and credited against the first production order.
Standard production tolerance follows the relevant ISO or DIN tolerance class for the process; tighter tolerances are possible after machining or grinding, but they add cost. Define the tolerance only on the functional dimensions.
A new tool typically takes 25 to 45 days depending on cavity count and complexity, followed by T1 samples within one week. Existing tools can usually start production within 10 to 15 days of order confirmation.
If you are planning a new chemical processing project, send us your drawing, annual volume and target properties, and we will come back with a material proposal, a tooling plan and a budget quotation.
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