Structural Foam Molding
Structural foam molding is a process used for making extremely strong, rigid and light-weight plastic parts and products that have a hard outer “skin” or shell and a hard “foamed” core.
The structural foam process is an extension of the standard injection molding process. An inert gas (e.g. nitrogen) is mixed with the plastic material and then injected into the mold under high pressure. When the mold is filled the gas acts to expand the material, forming a product with a solid skin on the outside and a “honeycomb”-type cellular structure on the inside – much like the panels used in ultra high-tech aircraft wings and fighter jet structures.
Ball Castors
“Castors,” as we all know them – a plastic or metal wheel attached at an angle to a metal rod – are everywhere. In the world of waste containers, if you need to move it you need a castor. Unfortunately, traditional castors are fundamentally flawed, because in order to enable the bin to be steered in the direction of a push or pull they must carry the weight of the container standing at an angle. This angle stress point is where traditional castors break.
In contrast, EcoBin’s ball transfer (or “ball castor”), which is made out of the same unbreakable material as the rest of the bin, has no wheel and no angle! In the illustration below it is easy to see the fundamental advantage of this technology.
