It is also one of the most common plastics in our homes and is also part of the polyolefin family. But its resemblance to polyethylene (PE) stops there. Because polypropylene is a much more rigid material so much more resistant to different forces to which it is subjected and whose physical properties are superior (melting temperature above 160° C). On the other hand, it is easily degraded when exposed to the sun, if it is not used with protective additives.
In what form is this material found in the house?
Polypropylene is used in the manufacture of various products: food packaging (thanks to its very good chemical inertia), dishwasher interior parts, ropes, in cars: side protection bars, bumpers, dashboards...
How to recognize this material:
A slight candle odor emanates from this plastic when a flame is passed on its surface. Polypropylene is part of the family of polyolefins, in this sense, polypropylenes maintain the flame when burned and flow once returned to melt.
How to work and tinker with this material:
Like PE, polypropylene is almost impossible to glue because it remains inert in the face of different glues available on the market.
It is a rigid material so it remains easy to drill but will require more care for milling or cutting.