Retail Presentation And Two-Piece Box Bases
Premium Retail Bases
The double-wall construction hides corner tabs and raw edges, making this an excellent base for cosmetics, electronics, or luxury goods. It is frequently paired with a separate lid or sleeve to create a complete presentation package.
Bakery and Confectionery
When cut from appropriate folding carton board, the clean interior provides a clean frame for pastries or chocolates. The lack of glue means no adhesive odors interfere with the product.
Two-Piece Rigid Box Programs
For brands building a telescopic box (a base and a lid), this tray provides a rigid, square foundation that holds its shape well under the friction of a sliding lid.
In-Plant Kitting and Assembly
Because it ships completely flat and needs no machinery to erect, it is useful for on-demand kitting stations where operators build trays as needed for mixed-product sets.
Manual Packing And Premium Display Environments
Manual Fulfillment Operations
This tray relies on a specific folding sequence: pre-breaking the creases, erecting the long walls, folding in the corner tabs, and finally rolling over and locking the short walls. It is designed for hand-packing stations rather than automated carton formers.
Retail Display Programs
Brands focused on the unboxing experience often choose this style because the rolled edges present a smooth, continuous printed surface to the consumer, elevating the perceived value of the product inside.
Low-Volume Premium Runs
Since it requires no gluing operation during converting, it can be an economical choice for short-run or promotional packaging where avoiding folder-gluer setup time is beneficial.
When To Compare Pre-Glued Or Single-Wall Packaging
High-Volume Packing Lines
If the fulfillment volume demands rapid setup, the manual folding and locking of this tray can become a bottleneck. Compare it to a pre-glued crash-lock tray or a machine-erected tray for faster throughput.
Material-Sensitive Budgets
The four double walls use a large, cross-shaped flat blank. If material yield is a strict priority and raw edges are acceptable, a standard single-wall tray will use less board.
Board Caliper, Print Layout, And Assembly Planning
Board Thickness and Fold Clearance
Because the inner panels fold 180 degrees over the outer walls, the board thickness should be carefully considered. Thick boards or heavy micro-flutes can crack or cause the inner walls to bow. Standard folding carton board usually performs best.
Print Layout for Rollover Walls
A unique advantage of the rollover design is that the interior walls are formed by folding the outside of the sheet inward. This allows detailed graphics on both the inside and outside of the tray walls while only paying for one-sided printing.
Transit and Outer Packaging
This is a presentation tray, not a standalone shipping container. The friction locks can disengage under heavy vibration or twisting, so it should be placed inside a secure outer shipping box or tight-fitting sleeve for parcel transit.
Packing Line Speed and Labor
The complex folding sequence takes longer to execute than popping open a pre-glued tray. Buyers should evaluate their manual packing capacity before committing to an unglued rollover design for large orders.
Locking Tab And Crease Adjustments
Nib Lock Length and Offset
The tray stays together using small tabs (nib locks) that snap into slots on the base. The length and offset of these tabs can be adjusted to make the tray easier to assemble or harder to pull apart, depending on the product weight.
Corner Flap Tapering
The internal corner flaps can be tapered or angled to prevent them from binding against the inner walls during assembly, ensuring a smoother folding process.
Crease Allowances for Thick Board
If a heavier board is chosen, the layer step creases can be widened to accommodate the extra material thickness, reducing the risk of the 180-degree folds cracking or bowing.
Board and packing details
Board Grain Direction
For the cleanest appearance, the board's grain direction should run parallel to the longest 180-degree folds to minimize the risk of the printed edge cracking during manual assembly.
Package Variants
B10.01.00.00.a
A variant that removes the horizontal taper on the corner flaps and adjusts the locking tab offset for a tighter, straighter inner wall fit.
Additional notes
Board grain direction and fold cracking
For the cleanest appearance, the board's grain direction should run parallel to the longest 180-degree folds to minimize the risk of the printed edge cracking.
FAQs
Assembly and Packing
Can this tray be set up by automated machinery?
The 180-degree rollover folds and friction locks are designed specifically for manual assembly at a packing station. Automated tray-forming equipment is generally not suited for these complex folds.
Does this tray use glue or tape?
The tray locks together entirely through mechanical friction when the short walls roll over the corner tabs and snap into the base slots.
Materials
How does board thickness affect the folds?
Heavy corrugated board often resists the 180-degree folds, which can cause the flutes to crush, the board to crack, and the locking tabs to slip. It is usually best suited for paperboard or very fine micro-flute.
Printing
How do I print on the inside of the tray?
Because the inner walls are formed by folding the outer sheet inward, you can achieve a printed interior wall by printing on the same side of the sheet as the exterior graphics. The base panel, however, would need two-sided printing if you want it colored.
Shipping
Is this tray suitable for courier shipping?
The friction locks can disengage if the tray is twisted or dropped. It is typically used as an inner presentation piece inside an outer shipping box.
Design
Why does this tray use more material than a standard tray?
The double walls on all four sides require a much larger flat blank. This means fewer trays fit on a single sheet of board during manufacturing, increasing the material usage per unit.
Comparison
What is the difference between this and a pre-glued tray?
This tray is entirely unglued and relies on friction locks, which takes longer to assemble by hand. A pre-glued tray (like the B30 series) arrives flat but pops open much faster, though it involves a gluing step during manufacturing.
Materials
Can I use micro-flute corrugated board for this tray?
Fine micro-flutes (like E or F flute) can sometimes be used, but the crease allowances must be carefully adjusted to prevent the 180-degree folds from binding or crushing the flutes.
