The sequence of post-printing processes may seem like a workshop matter, but it actually determines the final product quality: a wrong sequence can lead to issues like lamination bubbles, gold stamping flaws, and die-cutting misalignment. This article clearly explains the post-printing processing sequence for packaging boxes, ensuring that clients ordering custom products have a clear understanding before placing their orders.
What is the general sequence? Printing → Drying → Laminating (or varnishing) → Foil stamping / Debossing → Die-cutting → Box assembly / Assembly: The main principle is “first handle the surface, then shape, and finally form.” The logic behind the sequence is that each process must be performed on a stable surface.
Why is lamination done before hot stamping? Lamination must be performed first to ensure the hot stamping adheres smoothly to the film surface (for more stable adhesion). If hot stamping is done first, the foil may be damaged by the film pressure. The sequence of lamination follows the process combination.
Why is die-cutting placed later? Die-cutting alters the paper structure: cutting too early would cause deformation of the box blank due to tension in subsequent processes; placing die-cutting after hot stamping and lamination ensures stable dimensions. The position of die-cutting follows the principle of “final shaping.”.
Boxing / Assembly: Final Steps? Folding, Boxing, Installing Liners, and Attaching Magnets are Done Last: Adhesive Drying, Structural Shaping; Manual Assembly (Hard Box) Processes Also Follow the “Surface → Form → Completion” Logic. The Assembly Sequence Follows the Structure and Craftsmanship.
The post-printing sequence follows the “grammar of processes”: flat before shaped, smooth before folding, and hot stamping before cutting. By arranging the sequence properly, issues like bubbling, mottling, and misalignment can be significantly reduced.
Which comes first: hot stamping or embossing? For integrated embossing and hot stamping (hot stamping + embossing in one step), it’s completed in one process; for separate processes, embossing is typically done first, followed by hot stamping, ensuring the gold foil adheres more completely to the embossed surface. The sequence should be determined through test samples before finalization.
