Key Factors Affecting the Ductility and Compression Resistance of Empty Aluminum Squeeze Tubes
Release time:
Nov 11,2025
Empty aluminum squeeze tubes are widely used in cosmetics, pharmaceuticals, food, and industrial fields due to their excellent sealing, corrosion resistance, and recyclability. Their ductility and compression resistance are crucial indicators of product quality and user experience. Factors affecting the ductility and compression resistance of empty aluminum squeeze tubes mainly include material composition, manufacturing process, wall thickness design, and surface treatment.
Material composition and purity are fundamental factors affecting the performance of empty aluminum squeeze tubes. Typically, the tubes use high-purity aluminum or aluminum alloys containing trace amounts of magnesium, manganese, etc., to improve mechanical strength and processing performance. High-purity aluminum has better ductility but slightly lower strength; while alloy aluminum balances compression resistance and molding stability. A reasonable selection of alloy ratios can achieve a balance between flexibility and strength, meeting the packaging needs of different products.
Extrusion and annealing processes significantly affect the mechanical properties of empty aluminum squeeze tubes. After extrusion molding, the metal grains of the aluminum tube will experience stress concentration due to plastic deformation. Proper annealing can eliminate internal stress and improve microstructure, thereby enhancing the material's ductility and resistance to deformation. Excessive annealing temperature or insufficient annealing time can lead to reduced hose strength or uneven ductility.
Wall thickness design, along with geometry, is a crucial factor affecting compressive strength. Thicker walls provide greater compressive strength but reduce flexibility and increase material consumption; conversely, excessively thin walls are prone to deformation or breakage during use. Therefore, the wall thickness to diameter ratio must be rationally determined based on the product's application, filling pressure, and operating environment to ensure both withstand external forces and maintain a good extrusion feel.
Surface coatings and inner lining treatments also influence ductility. Empty aluminum squeeze tubes are often coated with epoxy resin or polyester protective layers to prevent reactions between the contents and the metal. Insufficient coating adhesion or uneven thickness can cause stress concentration during extrusion, affecting overall ductility and compressive strength.
The ductility and compressive strength of empty aluminum squeeze tubes are influenced by multiple factors, including material formulation, processing technology, structural design, and coating quality. By precisely controlling the parameters at each stage, the overall performance of empty aluminum squeeze tubes can be significantly improved, providing safe, aesthetically pleasing, and reliable packaging solutions for various products.
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