Premium Unboxing And High-Volume Fulfillment
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The double-wall construction hides all structural corner webs, presenting a clean, uninterrupted interior. This makes it an excellent base for cosmetics, electronics, and luxury goods where the unboxing experience matters.
High-Volume Manual Fulfillment
Because the converter pre-glues the four corners, the tray ships flat but pops open in a single motion. Packers only need to roll the end panels over to lock the tray, reducing assembly time compared to unglued styles.
Bakery And Food Service Display
Using the tapered-wall variants, the tray can display baked goods or deli items at an angle. The webbed corners help contain crumbs, while the fold-over panels provide a rigid frame for handling.
Confectionery Assortments
The sturdy double walls resist bowing, keeping delicate assortments secure. The flat, wide panels also offer excellent surfaces for high-end print finishes.
Cosmetics, Confectionery, And Retail Contexts
Cosmetics And Personal Care
Brands use this tray as a rigid base for gift sets and assortments. The clean interior walls provide an excellent backdrop for custom inserts or molded pulp trays.
Apparel And Soft Goods
For folded shirts, scarves, or accessories, the double-wall tray offers a structured presentation that keeps items neatly contained without the need for a full enclosed box.
Electronics And Tech Accessories
The rigid double walls provide a stable perimeter for holding tech accessories, often paired with a custom thermoformed or paperboard insert to secure the components.
Evaluating Unglued Or Covered Trays
When manual assembly is preferred over pre-gluing
The 4-corner pre-gluing process involves specific folder-gluer equipment. If your packing team has the time to manually fold and lock corners, an unglued double-wall tray (like the B11 family) avoids the gluing step entirely.
When shipping directly through parcel networks
This is an open presentation tray. For direct parcel shipping, it is usually placed inside a dedicated corrugated outer shipper or paired with a secure, heavy-duty sleeve.
Wall Angles, Board Folding Endurance, And Production Route
Straight Versus Tapered Walls
The standard tray features 90-degree vertical walls. If you need the tray to nest or want to display the product at an angle, tapered variants slant the walls outward. Tapered walls involve careful folder-gluer setup to ensure the corner webs fold correctly.
Board Caliper And Folding Endurance
The side and end panels fold 180 degrees to lock the tray. This relies on a paperboard with excellent folding endurance, such as folding boxboard (FBB) or solid bleached board (SBS). If the board is too thick or rigid, the creases may crack, or the panels may bow inward.
Production Route And Gluing Capabilities
This tray relies on a multi-point folder-gluer capable of 4-corner work. The machine folds the side flaps 180 degrees and applies adhesive to the corner webs in a single pass. Discussing this early helps ensure production alignment.
Insert And Partition Compatibility
The clean interior walls make this tray ideal for custom inserts. However, the internal dimensions are slightly reduced by the thickness of the fold-over panels, which should be accounted for when designing partitions.
Layer Step Creases, Locking Slot Widths, And Taper Angles
Layer Step Creases For Thicker Boards
When using heavier paperboard, the template can be adjusted with layer step creases. This offsets the fold lines slightly, giving the thick board enough room to roll over 180 degrees without binding or tearing the hinge.
Expansion Piece Locking Tabs
The end panels lock into the base using an expansion piece with small tabs. The width of the receiving slots in the base is typically matched to the board thickness to ensure a tight friction fit.
Taper Angle Adjustments
For tapered variants, the outward slant angle can be adjusted. This changes the geometry of the corner webs and locking flaps, affecting how the tray nests and displays the product.
Board and packing details
Folder-Gluer Compatibility
This tray relies on a multi-point folder-gluer capable of 4-corner work. The machine folds the side flaps 180 degrees and applies adhesive to the corner webs in a single pass. Discussing this early helps ensure production alignment.
Tapered And Thick-Board Variants
Tapered Walls (B31.02.00.00.a / .b)
These variants introduce an outward slant to the walls, creating a presentation-friendly profile often used in bakery or deli packaging. The taper angle changes the geometry of the corner webs and locking flaps.
Thick-Board Optimization (B31.02.00.00.c)
This variant explicitly enables layer step creases by default, making it a practical starting point when specifying heavier folding boxboard that needs extra clearance for the 180-degree folds.
