How do manufacturers prevent internal stress points in thick PVC sculpture walls?

Manufacturers employ several strategies to prevent internal stress points in thick PVC sculpture walls, ensuring durability and structural integrity. Key methods include controlled cooling processes, which gradually reduce temperature to minimize uneven contraction. Material formulation is also critical, with additives like plasticizers and stabilizers enhancing flexibility and reducing brittleness.

Another technique involves rotational molding or vacuum forming, which distributes material evenly and avoids thick-to-thin transitions that cause stress. Post-production annealing—heating and slowly cooling the PVC—further relieves residual stresses. Additionally, designers avoid sharp corners and sudden thickness changes, opting for smooth transitions to distribute stress evenly.

By combining these methods, manufacturers produce high-quality PVC sculptures with minimal internal stress, ensuring longevity and aesthetic appeal.