Polypropylene vs PLA
Compare Polypropylene and PLA filaments side-by-side so you can pick the right one for your 3D printing project.
Polypropylene vs PLA: Polypropylene is known for can bend without damage, while PLA is known for easiest to print. PLA is easier to print; Polypropylene is less moisture-sensitive; Polypropylene prints at higher nozzle temperatures (220-250°C vs 190-220°C). Choose Polypropylene for can bend without damage, or PLA for easiest to print.
Key differences at a glance
Polypropylene
FPP
Can bend without damage; very rugged; strong layer adhesion; very low density
PLA
APolylactic Acid
Easiest to print, cheap, widely available, fast, good bridges/overhangs, easy support removal
Detailed Comparison
Green marks the generally easier or more forgiving option in that row, based on tier, enclosure needs, and moisture sensitivity. It is not always the better choice for a specific job, so weigh it against what your project actually needs.
Strengths Comparison
Polypropylene Strengths
- Can bend without damage; very rugged; strong layer adhesion; very low density
- Excellent chemical resistance
- Good fatigue resistance (living hinges)
PLA Strengths
- Easiest to print, cheap, widely available, fast, good bridges/overhangs, easy support removal
- Stiff non-composite thermoplastic, good tensile strength
Considerations
Polypropylene Caveats
- Extremely poor bed adhesion; severe curling/warping (worse when cooling)
- Supports nearly impossible to remove due to toughness/perfect layer adhesion
- Often requires specialized build surface and setup
PLA Caveats
- Creeps under sustained load
- Poor heat resistance, UV degradation, can shatter on drops
- Not great for sanding/gluing/painting/touch-ups