How does the weight of PVC compare to polypropylene?

When comparing the weight of PVC (polyvinyl chloride) and polypropylene, density is the key factor to consider. PVC has a density of approximately 1.3-1.45 g/cm³, making it heavier than polypropylene, which has a density of around 0.9-0.91 g/cm³. This difference in density means that PVC is about 30-40% heavier than polypropylene for the same volume.

The higher density of PVC contributes to its durability and rigidity, making it suitable for applications like piping, window frames, and flooring. On the other hand, polypropylene's lighter weight and flexibility make it ideal for packaging, automotive parts, and textiles.

Understanding the weight difference between these materials is crucial for industries where material selection impacts product performance, cost, and efficiency. Whether you're designing lightweight components or need robust structures, knowing how PVC and polypropylene compare can help you make informed decisions.