A cosmetic tube may split along the side seam during retail display when the seam area is weakened by poor welding, excessive internal pressure, formula-package incompatibility, overfilling, heat exposure, or repeated mechanical stress. This problem is more common in laminated…
In cosmetic tube factory production, a practical tolerance range is commonly around ±1mm to ±2mm for tube length and around ±0.03mm to ±0.08mm for wall thickness, depending on tube diameter, material structure, production process, and customer quality requirements. For high-precision…
Creating a custom-shaped cosmetic tube head usually involves tooling and mold costs for the tube shoulder/head, cap matching, thread structure, sealing surface, and sometimes filling-machine compatibility. The cost depends on whether the brand only modifies an existing head style or…
Plastic tubes can collapse or deform after filling because the pressure inside the tube becomes lower than the outside atmospheric pressure. This is often called the paneling effect. Instead of staying round and smooth, the tube body caves inward, forms…
The right choice between single-layer (mono-layer) PE, 2-layer PE, and 5-layer co-extruded tubes depends on four things: your formula sensitivity, required shelf life, target cost, and recyclability goal. In simple terms, mono-layer PE is best for basic stable formulas and…
