Polypropylene Plastic Extrusions

What is Polypropylene?

Polypropylene (PP) is a versatile thermoplastic polymer that is often the chosen material for plastic extrusions due to its low cost, heat resistance, flexibility, customizability and strength. Available as a natural colored, colorable compound.

PP (Polypropylene) #5 is a widely used polyolefin, resistant to cracking, acids and organic solvents, with good dielectric properties.

Polypropylene Properties

• Increased toughness over Polyethylene (PE) #4
• Max temperature: 180 - 240 °F (PP #5 doesn’t melt until about 320 °F.)
• Offers excellent electrical and heat resistance

The two main grades of polypropylene used for plastic extrusions are homo-polymer and co-polymer. Polypropylene co-polymers are slightly softer than homo-polymers, but still tend to be more durable. Fillers boost stiffness to be competitive with other polymeric materials, extending use and versatility.

• Homo-polymer — strong stiff plastic that can be welded and offers excellent fatigue resistance
• Co-polymer — tends to be more durable offering better impact and stress resistance (more suitable for uses at lower temperatures)

Advantages of Polypropylene

• Low Cost of Extrusion (relatively inexpensive material)
• High Flexural Strength (due to its semi-crystalline nature)
• Low Coefficient of Thermal Expansion 

Polypropylene Extrusions

Common uses include luggage, microwavable food containers, cutting boards, window components, fodder systems and medical applications.

The information provided above is based on typical values, and is believed to be reliable. No warranty is given as to the suitability of the product for a particular application. Determination of the suitability of this product for any use is solely the responsibility of the user.