From Sheet to Shape: How Laminate Tubes Are Formed, Cut, and Headed
Step 1: Laminate Forming
Laminate tubes begin as flat sheets composed of multiple layers (often including PE, EVOH, or aluminum for barrier properties). These sheets are rolled into a cylindrical shape and welded along the seam to form a tube body.
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📄 Flat to Round: Precision machinery ensures accurate diameter and even seams.
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🔗 Strong Sealing: Heat or ultrasonic welding bonds the edges, creating a durable and hygienic tube wall.
Step 2: Cutting
Once formed into long tubes, the next step is cutting them into specific lengths according to the final product specifications.
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✂️ Custom Sizing: Length is tailored to capacity (e.g., 30ml, 60ml, etc.).
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📏 Tight Tolerance: Accurate cutting ensures consistent volume and smooth processing in the next stages.
Step 3: Heading
The cut tube is then fitted with an injection-molded head. The tube body is inserted into a mold, and plastic is injected to form a permanent head—complete with threads or nozzle shapes depending on the cap style.
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🔩 Threaded or Nozzle Options: Ready for screw caps, flip-tops, or nozzle tips.
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🔄 Strong Bonding: High temperature and pressure create a tight, leak-proof connection between tube body and head.
Conclusion:
From sheet to tube, the laminate forming, cutting, and heading process is a precise and efficient transformation. These stages not only define the structural integrity of the cosmetic tube but also prepare it for the decoration and sealing processes that follow. It's the first step toward a finished product that combines function, aesthetics, and brand value.
