How do polypropylene outdoor flower boxes resist deformation when exposed to steam or heat?
Polypropylene (PP) outdoor flower boxes are highly resistant to deformation when exposed to steam or heat due to the material's inherent properties. PP is a thermoplastic polymer with a high melting point (around 160°C), making it stable under typical outdoor temperature fluctuations. Its semi-crystalline structure provides excellent dimensional stability, preventing warping or bending. Additionally, PP has low moisture absorption, reducing the risk of expansion or weakening when exposed to steam. Manufacturers often reinforce these boxes with UV stabilizers and thick walls to further enhance heat resistance, ensuring long-lasting durability in garden or patio settings.
