Low cost, chemical resistant plastic with excellent aesthetic qualities
Polypropylene is a low cost, chemical resistant plastic with excellent aesthetic qualities. It is easy to weld using thermoplastic welding equipment and is often fabricated into water and chemical tanks. Polypropylene used in the manufacturing of upper and lower extremity orthoses and prosthetics offers the O&P fabricator a material that is easy to drape, blister form and seam. Polypropylene is easy to decorate with transfer patterns for O&P applications. FDA compliant polypropylene grades are available.
Polypropylene is available in homopolymer, carbon reinforced homopolymer, and copolymer grades.
Shop for Polypropylene
48 in x 96 in
0.062 in – 4 in
12 in x 12 in – 48 in x 96 in
0.030 in – 0.750 in
16 in x 16 in – 48 in x 96 in
0.125 in – 0.500 in
0.250 in – 14 in
Natural, Black, White
Natural, Black, White, Brown, Flesh, Blue, Pink, Purple, Red, Silver, Neon Green, Neon Pink, Royal Blue
|TEXTURE, SURFACE, PATTERN
||FDA Compliant, Heat Stabilized, Medical, Carbon Reinforced
Length, width, thickness, and diameter tolerances vary by size, by manufacturer, brand, and grade. Custom sizes and colors available upon request.
Polypropylene Properties and Material Options
Homopolymer Polypropylene (Polypro)– Homopolymer polypropylene is stronger and stiffer than copolymer. It is a very durable, rigid plastic available in natural (a translucent white) and a variety of colors. Easily formed, polypropylene is widely used for body jackets, upper and lower extremity orthoses (especially AFO’s), and rigid outer prosthetic sockets.
Copolymer Polypropylene (Copoly PP)– Copolymer polypropylene is a bit softer, but it is tougher and more durable than homopolymer polypropylene. Copolymer polypropylene tends to have better stress crack resistance and low temperature toughness than homopolymer polypropylene. Used in many of the same applications as homopolymer polypropylene, but where slightly more flexibility is needed.
ProComp (Carbon reinforced poloypropylene)– Innovative polypropylene material reinforced with carbon fibers for a 25% increase in stiffness. Layers of carbon fibers are infused between layers of homopolymer polypropylene which results in zero carbon fiber strand protrusion when finishing.
Tech Tip For O&P Fabricators– Homopolymer recommended oven temperatures are 325°F to 350°F.
Copolymer recommended oven temperatures are 300°F to 350°F.
Typical Properties OF Polypropylene
|Izod impact (notched)
||ft-lbs/in of notch
|Heat deflection temperature
@ 264 psi
|Maximum continuous service
temperature in air
(immersion 24 hours)
|Coefficient of linear thermal
Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.
Need more information about this material? Use our interactive plastic properties table