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EVF11104

Snap-Lock Bottom Carton with Tuck Top

Available in a wide range of custom configurations & material selection.
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Product details

Top highlights

1-2-3 interlocking bottom for retail items
Straight-line glued and delivered flat for handling
Manual bottom assembly involved before loading

About this product

This straight-line glued folding carton features a 1-2-3 snap-lock base and a regular tuck top. Delivered flat, it opens for manual assembly, providing a clean presentation face and a flat floor for retail shelves.

The snap-lock bottom offers more support for heavier items than a standard tuck bottom, without the specialty gluing steps of a pre-glued crash-lock box. However, it involves a manual folding sequence during packing, making it a practical choice for hand-assembly environments rather than high-speed automated lines.

Common uses

Cosmetics and skincare jars
Pharmaceutical bottles
Retail shelf displays needing a flat footprint
Fulfillment programs where manual packing is acceptable

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Retail and Light Consumer Goods Packaging

Cosmetics and Pharmacy

The interlocking base helps keep heavier glass bottles or jars from dropping out during handling, while the regular tuck top provides a familiar unboxing experience.

Retail Shelf Display

Because the four bottom flaps interlock to create a flat floor, the carton stands upright on shelves, improving presentation compared to boxes with overlapping bottom tucks.

Small Electronics and Hardware

Dense, compact items benefit from the mechanical lock of the 1-2-3 base, helping keep the product in place without relying on tape.

Health and Wellness Supplements

Provides a flat base for supplement bottles, helping the carton sit evenly on pharmacy shelves and handle well during retail stocking.

Fulfillment and Assembly Environments

Manual Packing Stations

The 1-2-3 bottom relies on hand assembly. Packers fold the large U-shaped flap, the two side flaps, and finally press the catch flap down to lock the base before loading the product.

Contract Packaging Operations

For facilities balancing assembly time and flat-shipping efficiency, this style offers a supportive base without the specialty gluing steps of an auto-bottom.

Retail Ready Programs

When presentation and base stability matter for the final shelf display, the flat floor of the snap-lock bottom keeps the carton upright and aligned.

When to Evaluate Auto-Bottoms or Tuck Bases

High-Speed Packing Lines

If packing speed is the main priority, evaluate an auto-bottom (crash-lock) carton. Auto-bottoms open without manual flap folding, saving seconds per unit.

Very Light Products

If the product is lightweight and base support is not a primary concern, a standard straight tuck or reverse tuck carton may be faster to assemble and simpler to specify.

Board Choice and Lock Clearances

Board Caliper and Friction

The snap-lock tabs and top slit locks rely on friction. Changing from a standard folding boxboard to a thicker material often requires adjusting the lock clearances so the flaps do not bind or tear during assembly.

Top Friction vs. Slit Locks

The top tuck flap includes slit locks that catch on the side dust flaps. Decide if this extra mechanical resistance is needed or if standard friction is enough for the product.

Insert and Void Fill Planning

Consider how the product sits on the interlocking base flaps. Some items may need a custom insert to distribute weight evenly across the snap-lock floor.

Outer Shipper Planning

Because the snap-lock bottom and tuck top may open under rough handling, a corrugated outer shipper is often worth comparing if the carton will travel through parcel networks.

Top Closure and Flap Adjustments

Thumb Cut Sizing

The front panel features a thumb cut to help open the top lid. This cutout can be resized or removed depending on the desired unboxing experience and graphic layout.

Dust Flap Styling

The top side flaps can be styled with flat, chamfered, or extended edges to change how the lid seats when closed and how much dust protection is provided.

Slit Lock Depth

The depth and angle of the top slit locks can be adjusted to increase or decrease the friction holding the lid closed, depending on the board grade used.

Packing details

Paired Production Layouts

For larger programs, this template can be nested in a paired layout (one carton flipped 180 degrees against another) to reduce board waste and improve material efficiency during die-cutting.

Production Layout Variants

EVF11104#2 (Alternate Dust Flaps)

A variant that exposes specific edge-styling options for the top dust flaps, allowing for chamfered or flat corners.

EVF11104#2P (Paired Layout)

A multi-up production layout that nests two blanks together, optimizing board usage for larger programs.

Additional notes

Manual folding sequence

Packers fold the large U-shaped flap first, followed by the two side flaps, and finally press the catch flap down to lock the base.

FAQs

Do I need tape or glue to keep the bottom closed?

The 1-2-3 snap-lock bottom relies on four interlocking flaps that catch and hold each other in place without tape. The side seam is pre-glued by the manufacturer.

Is this carton suitable for automated packing lines?

The snap-lock bottom involves a packer manually folding the flaps in a specific sequence. For automated lines, an auto-bottom or machine-erected carton is often a better fit.

Can this carton be shipped through parcel networks on its own?

The friction top and snap-lock bottom may open during rough courier transit. It is usually packed inside a corrugated outer shipper for parcel delivery.

Can this be made from corrugated board?

It is designed for folding boxboard (FBB) or solid bleached sulfate (SBS). Corrugated board is often too thick for the snap-lock tabs and top slit locks to engage smoothly without structural modifications.

How much weight can the snap-lock bottom hold?

It generally holds more weight than a standard tuck bottom, making it suitable for cosmetics jars or small bottles. However, exact weight capacity depends on the chosen board grade and should be tested with a physical sample.

What keeps the top lid from popping open?

The top tuck flap features small slit locks on its sides that catch against the top dust flaps, providing mechanical resistance against opening.

How is this carton delivered to my packing facility?

The carton is side-seam glued by the manufacturer and delivered flat. Packers squeeze the edges to open the tube before folding the bottom flaps.

Does the top lid need a clear seal?

The slit locks provide friction to keep the lid closed on a retail shelf. If tamper evidence is needed, a clear wafer seal can be added over the tuck flap.