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EVF21023

Tongue-Lock Presentation Box

Available in a wide range of custom configurations & material selection.
Order 1 sample. Or order 100K+ units. Or anything in between.
Affordable delivery across North America.
Design support, warehousing, testing, assembly available.
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Product details

Top highlights

Self-locking roll-end tray with a hinged lid
Front tongue-and-slot closure for repeated opening
Delivered flat for manual assembly without glue

About this product

This one-piece, unglued folding carton forms a sturdy roll-end tray with a hinged lid and a secure tongue-and-slot front closure. Designed for manual assembly, it provides a clean, double-wall interior and a presentation-focused unboxing experience for retail, kitting, and boutique packaging.

The front tongue lock allows the box to be opened and closed repeatedly without tearing, while the double-wall sides offer crush resistance without requiring adhesive.

Common uses

Retail presentation
Kitting
Subscription boxes (with outer shipper)

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Retail Presentation and Kitting

Retail Presentation

The double-wall sides and front create a clean, framed interior that highlights the product. The hinged lid opens fully for a clear unboxing experience, making it a strong choice for boutique retail and gift sets.

Kitting and Hand Assembly

Because the tray locks together without glue, it is easy to store flat and assemble on demand at the fulfillment station. The tongue lock provides a positive, secure closure that keeps kits contained before final packing.

Boutique Gift Sets

The tongue-and-slot closure provides a secure seal without requiring clear stickers or tape, preserving the premium look of the exterior graphics during the unboxing process.

Internal Trays for Master Cartons

When used as an inner organizer for larger multi-part shipments, the double-wall construction keeps individual components separated and protected before the master carton is sealed.

Subscription Programs and Boutique Retail

Subscription and E-commerce

While the tongue lock is secure for handling, it may open in rough parcel networks. For subscription boxes or e-commerce, this tray works well when placed inside a protective outer mailer or when sealed with a tamper-evident label.

Cosmetics and Personal Care

The unglued design means there is no adhesive residue or smell, which is often preferred for sensitive personal care items. The clean interior framing also pairs well with custom inserts.

Electronics and Tech Accessories

The double-wall sides provide a buffer zone that helps protect delicate edges, while the flat base easily accommodates molded pulp or die-cut paperboard inserts.

Standard Tucks and Automated Cartons

High-Volume Automated Packing

This tray relies on a sequence of manual folds to lock the double walls and seat the tongue. If your packing line uses automated folder-gluers or case erectors, evaluate standard auto-bottom or straight-line glued cartons instead.

Friction-Tuck Closures

If you prefer a lid that tucks into the front wall without an external tongue and slot, look at a standard roll-end tuck-top (RETT) tray.

Board Thickness and Assembly Labor

Board Thickness and Lid Clearance

The lid must clear the double-wall front panel to close properly. If you plan to use a thicker material like micro-flute corrugated instead of standard folding carton board, the layer step crease must be adjusted so the lid does not bind or bow.

Assembly Labor

Fulfillment teams should account for the time required to fold the dust flaps, roll the inner walls over, and secure the tongue lock. This manual process is straightforward but slower than opening a pre-glued crash-lock box.

Print Layout and Two-Sided Graphics

The hinged lid and double-wall interior offer excellent surfaces for branding. Because the inner walls fold over from the outside, graphics can be planned to show on the inside of the tray without requiring two-sided printing, depending on the layout.

Tongue Lock Security

The width and length of the locking tongue determine how securely the lid stays closed. A wider tongue provides a stronger lock, while a deeper slot ensures the lid stays seated even if the box is slightly overfilled.

Tongue Dimensions and Lid Clearance

Tongue and Slot Dimensions

The width and length of the locking tongue can be adjusted. A wider tongue provides a stronger lock, while a deeper slot ensures the lid stays seated even if the box is slightly overfilled.

Layer Step Crease Calibration

The layer step crease parameter can be fine-tuned to match the exact caliper of the chosen paperboard, ensuring the lid folds cleanly over the double-thick front wall.

Thumb Cut Additions

Half-moon thumb cuts can be added to the inner front wall, making it easier for consumers to grip and release the tongue lock without tearing the paperboard.

Packing details

Print Layout and Interior Branding

The roll-end design means the inner side walls are formed by folding the outer material inward. This allows you to carry exterior print onto the inside walls of the tray without necessarily paying for double-sided printing.

Additional notes

Print layout and interior branding

FAQs

Does this box require glue?

The tray uses a roll-end folding sequence where the inner walls fold over and lock into the base, holding the tray together entirely through friction and geometry, without adhesive.

Can I ship this box through the mail?

The tongue lock is secure for retail handling and kitting, but it may open if crushed or caught on sorting equipment. For parcel shipping, it should be placed inside an outer mailer or secured with heavy-duty sealing tape.

Can this be made from corrugated board?

While it can be adapted for micro-flute corrugated for added stiffness, the template parameters must be adjusted to account for the thicker board so the roll-end walls fold cleanly and the lid closes smoothly.

How durable is the tongue lock?

The rounded tongue is designed for repeated opening and closing. As long as the slot depth and tongue width are properly matched to the material, it resists tearing during normal consumer use.

Is this suitable for automated packing lines?

The complex folding sequence for the dust flaps and double walls requires manual assembly. It is best suited for hand-packing stations rather than automated carton erectors.

Does the tongue lock reduce interior space?

The tongue inserts into a slot on the front wall, which means it protrudes slightly into the interior of the box. Products packed tightly against the front wall should be checked for clearance.

How is the tray delivered?

Because it requires no gluing during manufacturing, the tray is delivered completely flat. This saves space in storage and transit before fulfillment.

Can I print on the inside of the tray?

Yes. The roll-end walls fold over from the outside, meaning graphics printed on the exterior side of the flat blank will be visible on the interior side walls once assembled.