Interactive 3D

1 / 3

EVF13041

Pre-Glued Triangular Slice 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.
Widest machinery capability in America via 30+ specialist partner plants.

Get pricing

Free white-glove consultations. Blazing-fast response time. Fast quotes.

Product details

Top highlights

Pops into shape from a flat-shipping tube
Wide rear loading with a secure tuck-and-slit-lock closure
Relies on folder-gluer routing for the long seam and apex tip

About this product

A flat-shipping, auto-erecting wedge carton designed for high-speed retail counter service. By using two manufacturer glue seams, this folding carton pops into a rigid 3D triangle with a simple squeeze, allowing staff to load single slices of cake, pie, or pizza quickly.

The wide back opening provides easy product access and secures with a standard tuck flap and dust guards. Because it arrives pre-glued, it shifts the assembly burden away from the retail floor, making it a practical alternative to unglued clamshell wedges.

Common uses

Single-slice bakery items (cake, pie)
Oversized pizza slices
Triangular novelty retail products and cosmetics
Triangular sandwiches and wraps

Get a quote

Share what you know. We'll take it from there. Or email us at info@herculeindustrial.com

Describe your project *

Approximate quantity *

Size if known

Files or competing quote (optional)Drag files here or choose filesAdd drawings, photos, dielines, quotes, specs, or other useful files.Max 5 files, 25 MB total.

Name *

Email *

Phone

Optional

More details

You can skip this whole part, or open a section and answer only what you know.

Size and quantity

Detailed dimensions

Units US customary (inches)Metric

What do your dimensions describe?

Length (point to back opening)

Width (across the back opening)

Height (thickness of the slice)

Size notes

Quantity notes

Materials and print

Paperboard preference

Add details for paperboard preference

Paperboard details

Print and artwork

Add details for print and artwork

Print, finish, or artwork details

Shipping or storage context

Custom changes or unusual needs

What type of product will go inside?

Do you need a clear window to show the product?

How will these be packed and handed out?

Current box or specs

Do you have a current box, spec, or target sample?

Add details for do you have a current box, spec, or target sample?

Current box, known specs, or current problem

Destination ZIP or region

Company

Any deadline or timing constraint?

Retail and Food Service Applications

Single-slice bakery portions

Cake and pie slices load easily through the wide back. The rigid side walls protect frosting and delicate edges during retail handoff.

Oversized pizza slices

When specified with a grease-resistant coating, the wedge provides a clean, handheld package for oversized pizza slices.

Triangular novelty retail products

Triangular cosmetics, specialty soaps, or promotional items benefit from the distinct shape and the fully printable top panel.

Deep-filled sandwiches and wraps

Deep-filled or premium wedges can be loaded quickly, with the rigid board protecting the contents better than a soft wrapper.

Bakery and Counter Service Environments

High-volume retail counters

The auto-erecting tube design saves seconds per transaction compared to manually folding a flat blank, keeping lines moving during rush hours.

Bakery display cases

The flat top and bottom triangles allow the loaded boxes to be stacked neatly in bakery cases, maximizing vertical display space.

Event catering and grab-and-go

Pre-portioned items can be handed out quickly, and the flat-shipping delivery takes up minimal space behind small serving counters.

When to Consider Unglued Clamshells

Manual-only production or trial runs

If the order volume does not support folder-gluer production, or if the converter struggles with the small apex glue flap, an unglued clamshell wedge is worth comparing.

Outer shipping for parcel delivery

This is a primary retail carton. If the slice ships through a courier network, an outer corrugated box is usually needed to protect the wedge from crushing.

Board, Coating, and Closure Choices

Board grade and food-contact coatings

Bakery and pizza applications often use poly-coated or greaseproof paperboard. The chosen adhesive should be checked for compatibility with these coatings to prevent seam failure.

Board thickness and the apex fold

Standard folding boxboard around 0.5mm yields crisp folds at the sharp apex. Thicker boards or micro-flutes may struggle to fold cleanly at the narrow tip without specialized scoring.

Tuck lock friction and board thickness

The back closure relies on slit locks engaging with the dust flaps. If the board thickness changes, these locking notches should be adjusted to maintain the right opening and closing resistance.

Print surface and display impact

The top triangle offers a large, uninterrupted canvas for branding, making the choice of coating and finish important for display impact.

Adjusting the Wedge Profile

Wedge length and width scaling

The footprint can be scaled to fit specific slice dimensions, though extreme lengths may cause the side walls to bow slightly under vertical stacking pressure.

Film window additions

A film window can be added to the top triangle for product visibility, if the production route includes window patching equipment.

Tuck flap lock styles

The back closure can use a simple friction tuck for easy opening, or slit locks that catch on the dust flaps for a more secure hold during transit.

Packing details

Folder-gluer routing checks

The design features a long side seam and a small apex glue flap. Converters should verify their equipment can handle both simultaneously without skewing the flat fold.

Additional notes

Apex glue flap bonding

The narrow tip relies on a small manufacturer glue flap. If this seam does not bond correctly, the point of the wedge may splay open.

FAQs

Does this box need manual folding before loading?

It is delivered as a pre-glued, flat tube. A quick squeeze on the edges pops it into a 3D wedge, leaving only the back flap to be tucked after the product is loaded.

Can this be produced on standard folding carton equipment?

It is produced using a die-cutter and a folder-gluer. The gluer routing should be checked to ensure it can apply adhesive to both the main side seam and the small apex flap at the tip of the wedge.

Is this structure suitable for corrugated board?

It is usually difficult to produce with corrugated board. The sharp apex and small glue flap are hard to fold and secure cleanly with thicker fluted materials. Standard paperboard is usually recommended.

Can the box hold greasy or moist foods?

If specified with a poly-coated or grease-resistant board, it can handle moist items. The converter should verify the adhesive used on the seams bonds correctly with the coated surface.

How is this package delivered to the retail store?

It ships knocked down flat. This provides excellent pallet density and takes up minimal storage space under a bakery counter.

Can I ship this wedge through the mail?

The tuck closure and wedge shape are designed for retail handoff and display. Parcel shipping usually involves placing the wedge inside a protective outer corrugated box.

Can the entire top surface be printed?

The top triangle is a single, uninterrupted panel, making it a strong primary display surface for branding, logos, or product information.

How does the back of the wedge stay closed?

The wide back opening uses a standard tuck flap. Depending on the board thickness, slit locks can be added to catch on the side dust flaps for extra friction.