Q1: How do we achieve different capacities on the same D19mm tube without new molds?
The SampoX Answer: We don't need to open new molds for the tube body. During the plastic extrusion process, the machine produces a continuous sleeve. To change the capacity from a 15ml eye cream to a 10ml lip care product, we simply cut the extruded sleeve to a different length. This simple step saves brands thousands in custom tooling fees while sharing the exact same base diameter.
Q2: How do you ensure different applicator heads fit the exact same tube neck without leaking?
The SampoX Answer: The secret lies in high-precision injection molding. While the extruded body changes length, the tube's shoulder and neck thread are injection-molded using standardized, ultra-precise molds. Whether you are attaching a silicone tip for lip balm tubes or a heavy metal tip for eye creams, the standardized thread pitch ensures a tight, 100% leak-proof seal every time.
Q3: Heavy metal eye cream applicators can easily snap off. How does the factory secure them?
The SampoX Answer: We do not rely on basic gluing. Our heavy applicators are secured using a mechanical snap-on design combined with a rotating locking ring. This guarantees the heavy tip will never fall off during consumer use. Furthermore, this smart locking ring allows the head to be freely disassembled, making it incredibly convenient for contract fillers who require "front-filling" (filling from the top orifice before sealing).
Q4: If the tube shape is standard, how do we visually separate a high-end eye cream from a standard lip balm?
The SampoX Answer: Since most D16mm and D19mm shapes are public molds, the brand's identity is defined entirely by printing and decoration. Because lip balm tubes and eye cream packaging have a very small surface area, we strongly advise against cluttered, full-wrap designs. For a clean look, we recommend minimalist Silk Screen Printing. When you need to elevate the product to a luxury tier, adding Hot Stamping (metallic foil) provides that instant, expensive premium feel without overcrowding the small canvas.