Polypropylene (or “PP” for short) is a rigid, crystalline thermoplastic known primarily for its strength and durability. Polypropylene is the second most commonly produced plastic in the world behind only polyethylene, with which it shares a number of characteristics and applications. (although polypropylene is substantially stiffer and has a higher melting point).
JC Finley polypropylene is 100 percent recyclable and can be melted down into plastic pellets and reformed into products over and over again. Because of this, polypropylene is extremely desirable to eco-friendly manufacturers. To tell whether a household product is made of recyclable polypropylene, look for the recycling icon with a number 5 stamped into the product itself.
Polypropylene is prone to oxidation at high temperatures, so thermoforming is a bit more challenging with polypropylene as compared to other materials such as polyethylene. In addition, polypropylene can be difficult to paint and bond with other materials and its low annealing point can make polypropylene machining a difficult skill to master.
Because of its resistance to wear and low coefficient of friction, polypropylene fabricating can be used for gears and other machinery components. However, because it is difficult to bond with common plastic adhesives, materials like nylon are much more common for these types of applications. For polypropylene fabricators, the material is one of the more frequently converted plastics and polypropylene machining and polypropylene fabrication are both common in the plastics industry.
In terms of polypropylene distribution and sales, the material is typically sold in cut-to-size sheets, rods, and tubes of varying thicknesses and colors. For more on polypropylene fabrication applications, contact the team at JC Finley.