What are the limitations of WPC when used for large-capacity outdoor trash cans?

While Wood Plastic Composite (WPC) is a popular material for various outdoor products, its application in large-capacity outdoor trash cans presents several significant limitations. The primary concern is structural integrity. As the size and capacity of the bin increase, WPC's inherent lack of rigidity compared to materials like steel or high-density polyethylene becomes a critical flaw. Large WPC trash cans are prone to sagging, warping, and even cracking under heavy loads or physical impact, especially at stress points like the lid hinges or base.

Another major limitation is sensitivity to temperature fluctuations. WPC expands and contracts with temperature changes more than pure plastics. In large panels used for big trash cans, this thermal movement can weaken joints, cause fasteners to loosen, and lead to structural failure over time. Prolonged exposure to direct sunlight can also cause the material to fade and become brittle.

Furthermore, WPC has limited resistance to moisture absorption. Although it performs better than solid wood, it is not entirely waterproof. In large bins that are constantly exposed to rain and snow, moisture can seep in, leading to swelling, mold growth, and a shortened lifespan. For heavy-duty, high-volume waste disposal in public spaces, these limitations make WPC a less reliable choice than more robust alternatives designed for maximum durability and longevity.