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EVC11120P

Auto-Bottom Box with Tongue Lock (Paired Layout) | EVC11120P

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

Top highlights

Pre-glued auto-bottom for fast manual assembly
Tongue lock provides a secure mechanical closure
Paired 2-up layout improves material savings for repeat programs

About this product

The EVC11120P is a corrugated folding carton designed for high-speed packing and clean presentation. It features a pre-glued crash-lock base that is delivered flat and opened for loading, along with a friction tuck top and a mechanical tongue lock that secures the lid mechanically.

The 'P' designation means this template is engineered as a 2-up paired layout. By nesting two blanks together during die-cutting, it reduces material waste, making it a practical choice for repeat retail and fulfillment programs.

Common uses

E-commerce fulfillment as an inner carton
Retail shelf packaging
Subscription boxes that benefit from a clean unboxing

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Retail and Fulfillment Uses for the Tongue-Lock Auto-Bottom

Retail Shelf Presentation

The clean tongue lock provides an excellent presentation on retail shelves. The paired manufacturing layout keeps material usage in check when ordering in large quantities.

E-commerce Kitting and Inner Cartons

Because the base is pre-glued, packers can open and load the box quickly. The mechanical top lock holds securely, making it a practical choice for kitting or as an inner carton inside a master shipper.

Subscription and Unboxing Programs

The tuck-in top and tongue lock create a premium unboxing experience. The lid stays flush and secure without the messy look of external seals, which helps maintain brand presentation.

Lightweight Consumer Goods

For apparel, cosmetics, or lightweight electronics, the crash-lock base provides plenty of support. The fast assembly makes it easy to pack these items quickly during peak fulfillment periods.

Operations Using the Paired Layout

Direct-to-Consumer Brands

Brands looking for a premium unboxing experience benefit from the clean tuck-in top. The tongue lock keeps the lid flush and secure without the messy look of external seals.

Procurement for Repeat Programs

Buyers managing large packaging programs will appreciate the paired layout. Nesting two blanks on the corrugated sheet minimizes offcut waste, maximizing material savings.

Contract Packers and Fulfillment Centers

Operations focused on throughput value the pre-glued crash-lock base. It removes the step of manually folding and sealing bottom flaps, allowing packers to move faster.

When to Compare Other Box Styles

Short Runs or Prototypes

The paired layout involves specific cutting preparation and folder-gluer routing. For short runs or initial testing, a single-layout version (EVC11120) or a standard snap-lock bottom might be more practical to trial.

Heavy Industrial Loads

While the crash-lock base is strong, very heavy items might cause the pre-glued panels to sag. For dense industrial parts, a fully sealed standard shipping box (RSC) is often a more practical choice.

Direct Parcel Shipping

The tongue lock is secure for retail and handling, but it might catch or open during direct-to-consumer shipping. If shipping directly through parcel networks, you might want to add a clear wafer seal or switch to a mailer designed for transit.

Board, Print, and Packing Decisions

Board Thickness and Flute Profile

This box performs well in E-flute or micro-flutes. These thinner profiles allow the crash-lock base to fold cleanly and help the tongue lock engage without binding. Thicker flutes like C-flute can make the locking tab difficult to insert.

Hand Assembly vs. Automated Erection

This box is delivered flat and is designed for manual erection at the packing bench. The operator simply pushes the edges to open the box. It is not intended for automated case-erecting machinery.

Outer Shipper vs. Direct Transit

Decide whether this box will ship inside a master carton or directly to the consumer. If shipping directly, the tongue lock might benefit from a clear seal to keep it from catching on sorting equipment.

Print Surface and Graphics

The smooth panels of the tuck-top design offer excellent billboard space for branding. Consider how the graphics will align across the front panel and the tuck flap, especially around the tongue lock cutout.

Adjusting the Tongue Lock and Dust Flaps

Tongue Lock Clearances

The width and length of the locking tab can be adjusted to match the chosen board thickness. A precise fit helps the lid snap securely into the front panel slot without tearing.

Dust Flap Coverage

The top dust flaps can be extended to provide more coverage over the product, or shortened to save material. Longer dust flaps help keep small items from slipping out.

Base Panel Proportions

The crash-lock bottom panels are calculated based on the width of the box. If the box is very narrow or wide, these panels might need adjustment to help them fold and lock correctly.

Packing details

Understanding the Paired Layout

The 2-up paired layout means the converter die-cuts two interlocking blanks at once. After cutting, the blanks are separated and run individually through the folder-gluer to apply the side seam and crash-lock adhesive.

Additional notes

Parcel sealing and outer carton choice

While the tongue lock is excellent for presentation, rough handling in courier networks can snag the tab. Consider a master shipper or a clear security seal for direct-to-consumer transit.

FAQs

Why choose a paired layout over a single layout?

A paired layout nests two box blanks together on the corrugated sheet, reducing material waste. It is highly efficient for repeat programs, though it involves specific 2-up cutting preparation.

When is an outer seal recommended for the tongue lock?

For retail display, kitting, or inner cartons, the tongue lock holds securely on its own. However, if the box is shipped individually through a parcel network, an outer seal is recommended to keep the tab from catching and opening.

How does the crash-lock base affect packing speed?

Because the base is pre-glued by the manufacturer, the box is pushed into its 3D shape quickly. This removes the step of manually folding and sealing the bottom flaps, saving several seconds per package.

How does board thickness affect the tongue lock?

It is generally recommended for E-flute or thinner micro-flutes. Thicker boards can cause the crash-lock panels to bind during folding and might make the tongue lock too tight to engage properly.

How are prototypes handled for a paired layout?

For a physical prototype, the manufacturer usually extracts the single box layout (EVC11120) to cut on a digital sample table, rather than cutting the full 2-up paired layout.

How does product weight affect the crash-lock base?

The pre-glued base easily supports standard retail and fulfillment goods. However, for exceptionally heavy or dense items, the glued joints could be stressed, and a fully sealed bottom might be a better choice.

Is this box suitable for automated case erectors?

This box is designed for manual erection at the packing bench. Automated case erectors typically handle standard slotted containers (RSCs) rather than pre-glued crash-lock bases.

How is the tongue lock adjusted for different board grades?

The width and length of the locking tab, as well as the receiver slot, are adjusted in the template to match the exact thickness of the chosen corrugated board, helping it snap securely without tearing.