Blow Molding

Why Do Shampoo Squeeze Bottles Crack and Peel? The Physics Explained Reference Standard: ASTM D1693 (Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics) and ISO 9001 quality management systems used for blow molding precision. Short Answer Shampoo squeeze bottles fail primarily due to surfactant-induced chain de-entanglement, where polarized molecules infiltrate the PE polymer’s amorphous zones to trigger base fractures. Additionally, ink peeling and squeeze-collapse are driven by surface energy polar group depletion and flexural hysteresis, where the material’s crystalline orientation locks after repeated deformation, preventing geometric recovery. Surfactant-Induced Chain Entanglement Decay: The Chemistry of Base Fracture A common engineering failure in the shampoo squeeze bottle industry is Environmental Stress-Cracking … 続きを読む