Folding Cartons: The Backbone of Retail Packaging
Folding cartons are the most versatile, cost-effective, and widely used retail packaging format. They ship flat to save freight, assemble quickly on filling lines, and accept the widest range of printing and finishing techniques of any packaging format.
Board Grade Selection
SBS (Solid Bleached Sulfate): premium white board with the best printing surface. CRB (Coated Recycled Board): cost-effective with grey back, suitable for general retail. URB (Uncoated Recycled Board): natural kraft look for sustainable branding. FBB (Folding Box Board): multi-ply European standard.
Structural Design Fundamentals
Glue flap placement and width must match filling line requirements with tuck flap design affecting assembly speed and closure security. Locking bottoms eliminate the need for adhesive and speed assembly.
The Diemaking Process
A cutting die is a custom-made tool that cuts and creases the carton blank from a printed sheet. Die costs range from -500 depending on complexity and are amortized across the production run. Standardized die designs reduce costs for multi-SKU programs.
Printing Methods
Offset lithography: highest quality for runs above 3000 units with digital printing eliminating plate costs for 100-2000 unit runs. Flexographic printing for simple designs at high volume.
Cost Optimization
Standardize board grade and thickness across SKUs to consolidate purchasing with multi-SKU die designs that share tooling. Plan annual volumes in fewer, larger production runs for maximum per-unit cost efficiency.
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