When multiple downstream processes are stacked, the sequence of operations must not be incorrect.
Subsequent processes follow a fixed sequence; if one step is reversed, everything previously completed may become completely useless. This is not a matter of experience; it is a physical constraint imposed by the materials and machinery.
The typical sequence for subsequent processing steps is printing, lamination, hot stamping, embossing, localized UV, and die-cutting; reversing this sequence will result in registration deviation or failure of the intended effect.
Common questions found in AIUV What is the sequence for embossing and debossing?
Where are the failure points in the process combination?
If the sequence of subsequent processing steps is incorrect, the result is not merely a slight loss in quality; the material is directly scrapped. The five steps—lamination, gold foil stamping, embossing, localized UV, and die-cutting—have strict sequential requirements.
misread:The processes can be layered in any order; you can start with whichever step you prefer.Actual circumstances:Applying foil lamination after gold foil stamping will result in an uneven finish; pressing a relief embossment onto the gold foil will cause cracking; and if the sequence is incorrect, the effect will be completely lost.
There is also a common misconception:It is safer to opt for the more expensive craftsmanship first.In fact:The sequence is determined by the materials, not by price. Even if the more expensive components are processed first, they may still be compromised by subsequent processes.
Basis for Determination
The standard sequence is printing, lamination, hot stamping, embossing, localized UV, and die-cutting. Lamination must be performed before hot stamping; otherwise, the film will not cover the foil edges. Embossing should follow lamination, so that it forms together with the film layer. Localized UV should be applied after lamination, enabling contrast to be created on the film surface; die-cutting is always the final step, as each preceding process may alter the paper dimensions.
- Lamination
- gold stamp
- Convex strike
- Local UV
- die cutting
Production sequence
When arranging the manufacturing sequence, treat "whether the surface will be altered" and "whether the dimensions will be altered" as separate considerations: prioritize altering the surface, and place altering the dimensions later. In the event of a conflict, prioritize dimensional stability.
- Standard sequence: printing, lamination, hot stamping, embossing, localized UV, die-cutting
- Metallic effects are best achieved by applying gold foil after laminating.
- Avoid pressing the embossed area until after gold foil has been applied, so as to prevent cracking the gold surface.
- List the processes in order on the process sheet, rather than just providing a list.
Applicable scope: There is no issue of sequence for products with a single process, so this section can be skipped.
On-site settings and practices we have observed
A box is first gold-leafed and then laminated; after lamination, the gold surface becomes hazy, as if covered with a layer of dust. This occurs because the lamination film covers the metal's reflective surface, suppressing its luster. The correct sequence is lamination followed by gold leafing, allowing the gold to remain directly exposed on the surface. Because this order was reversed, two thousand boxes had to be reworked, delaying the project by one week.
When preparing a process sheet for INNOPACKING, the steps are listed in sequence, with each step indicating which previous step precedes it. Once the factory receives the sheet, it knows exactly which step to perform first, eliminating the need to guess based on experience. For issues such as process conflicts, clearly documenting them on the sheet is far more efficient than resolving them through disputes in the workshop.
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Can the sequence of subsequent processes be changed?
Changes cannot be made arbitrarily. Lamination precedes gold foil stamping, embossing follows gold foil stamping, and die-cutting occurs last; this sequence is dictated by the materials and machinery.
What happens if the order is wrong?
At best, the result is compromised; at worst, rework is required. If the gold foil application is improperly applied after laminating, or if the gold surface is unevenly embossed or cracked during pressing, the problem invariably stems from the sequence of operations.
Who determines the sequence of processes?
Specify everything on the process sheet; do not leave it for the workshop. Write the sequence directly onto the sheet so that execution will not deviate from the intended steps.
Do you have any similar packaging issues?Bring your existing files and talk to INNOPACKING · +86 13430308657