Ethylene Vinyl Acetate (EVA) and UHMWPE (Ultra High Molecular Weight PE) are the two most quoted options for marine and outdoor plastic products in agriculture and horticulture projects. Both are widely available, but they behave very differently once they are in service.
This guide is written for engineers, purchasers and project managers who need a practical answer, not a resin data sheet.
This category covers a family of products rather than a single item. In practice a buyer defines marine and outdoor plastic products 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 marine board sheets to 200 mm thickness; UV stabilised colours; buoyancy foam blocks. Materials most often specified are UHMWPE, High Density Polyethylene, Polyvinyl Chloride, Polycarbonate, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.
In the agriculture and horticulture sector the decision is usually driven by UV stabilisation and tear strength, with chemical resistance to fertilisers as a secondary requirement. Typical end uses include greenhouse film, drip irrigation lines, silage wrap.
The table below summarises the values that usually decide the material choice.
| Material | Density | Tensile strength | Service temperature |
|---|---|---|---|
| Polyvinyl Chloride | 1.38-1.45 g/cm³ | 40-55 MPa | -10°C to 60°C |
| High Density Polyethylene | 0.94-0.97 g/cm³ | 20-32 MPa | -50°C to 80°C |
| UHMWPE | 0.93-0.94 g/cm³ | 30-45 MPa | -150°C to 80°C |
Ethylene Vinyl Acetate is frequently the default selection here: Foamed EVA is the standard cushioning and buoyancy material in sports and marine products.
Ethylene Vinyl Acetate grades offer very flexible and elastic, while UHMWPE brings highest impact strength of any thermoplastic. For agriculture and horticulture service the difference shows up in UV stability and in the long term behaviour under load.
In short: choose the first option when stiffness, heat and dimensional stability dominate; choose the second when impact, cost and processing speed matter more.
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.
For standard sizes and colours the minimum is usually one pallet or one production run; for custom tooling the economic minimum depends on the tooling cost amortised over the expected volume. Send us your annual volume and we will calculate the break even point.
Colour is controlled with a masterbatch reference approved by the customer, and every production lot is checked against the approved sample under standard lighting before shipment.
Yes. {mat1} is one of our regular materials for this item, and we can supply virgin, modified and certified grades with full traceability. Material certificates and test reports are issued per batch.
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.
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.
Share your specification and quantity with us and we will recommend the most cost effective material, tooling route and packing method for your market.
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