this post was submitted on 18 May 2025
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Wheelie bins are probably made in the same way, only with a differently shaped mould. There are probably other common objects that also belong to this class.
Lots of things could be “monobloc”. Cutlery, flower pots, plastic army men, etc.
But a wheeliebin definitely is not one. There’s at least 4 parts to a wheelie bin. Body, lid, 2x wheels. Probably closer to 8, as you probably have 2x clips for the lid, an axle, and some form of axle retainer. Even more if you count the individual parts of the wheel and bearings.
The body, though, appears to be extruded from a sheet of plastic in the same way as the chair.
Yes, it’s injection molded. A process of injecting molten plastic into a form to produce an object made out of one single piece of plastic.
Pretty much every large volume plastic thing is made that way.