How does the weight of PVC compare to polyethylene?

When comparing the weight of PVC (polyvinyl chloride) and polyethylene, density plays a key role. PVC has a density of approximately 1.3-1.45 g/cm³, making it heavier than most types of polyethylene. High-density polyethylene (HDPE) has a density of about 0.93-0.97 g/cm³, while low-density polyethylene (LDPE) is even lighter, with a density of around 0.91-0.94 g/cm³. This means PVC is roughly 30-50% heavier than polyethylene, depending on the specific type.

The weight difference between these materials influences their applications. PVC's higher density makes it more rigid and durable, ideal for construction pipes, window frames, and flooring. On the other hand, polyethylene's lighter weight and flexibility make it suitable for packaging, containers, and lightweight products.

Understanding the weight and density of these plastics helps in selecting the right material for specific needs, balancing strength, durability, and weight requirements.