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ECMA F40.03.00.00.22

Wedge Box with Curved Back

  • 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.
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Product details

Top highlights

  • Tailored fit for pie slices, cake, and cheese wedges
  • 100% unglued, self-locking manual assembly
  • Curved rear wall requires flexible folding boxboard (FBB)

About this product

The F40.03.00.00.22 is a specialized, unglued folding carton designed specifically for wedge-shaped products like pie slices, cake, or specialty cheeses. It features a distinctive curved rear panel that smoothly follows the radius of the base, providing a tailored retail presentation.

Delivered flat and assembled entirely by hand, the two straight side walls interlock at a sharp front point, creating a secure receiver for the hinged lid without requiring any adhesive.

Common uses

  • Bakery retail for single slices
  • Specialty cheese wedges
  • Confectionery presentation

Get a quote

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

Best Price Guarantee

Already have a packaging quote? Let us beat it.

Send us the quote you have. We will beat it for the same specifications, quantity, and delivery requirements.

Upload a competing quote

Free quote review. No obligation.

30+specialist partner plants

We supply through the plant best suited to your price, material, production, and delivery requirements.

Why we can beat a lower quote

30+ plants give us more ways to lower the price.

Each plant has different machinery, material costs, order minimums, and freight rates. Our buying volume helps us secure better pricing. We then quote through the plant that gives you the lowest total price for your requirements.

Send us your current quote. Watch us beat it.

Attach it to the quote form or email it to us. We'll review it free and send you our price.

Upload a competing quoteinfo@herculeindustrial.com
Best Price Guarantee terms

To qualify, send a written supplier quote dated within the past 30 days and addressed to your company. It must cover the same dimensions, construction, material, print, finish, quantity, tooling, freight, delivery date, and delivery location. The guarantee does not cover taxes, expired quotes, liquidation or clearance sales, or obvious pricing errors.

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Retail Presentation for Wedge-Shaped Foods

Single-Slice Bakery Retail

The triangular footprint and curved back closely follow the shape of a cut slice of pie or cake, preventing the product from shifting while offering a clean presentation in the display case.

Specialty Cheese Wedges

For artisan cheeses cut into wedges, this carton provides a distinctive, tailored fit that stands out on the shelf compared to standard rectangular boxes.

Confectionery and Chocolate Wedges

Premium chocolates or fudge molded into wedge shapes benefit from the exact fit and unglued, clean interior presentation.

Non-Food Wedge Presentation

Specialty soaps or cosmetics shaped like wedges can use this carton for a unique unboxing experience that highlights the product's geometry.

Bakery, Cafe, and Specialty Food Retail

In-Store Bakery and Cafe Counters

Because the carton ships completely flat and requires no glue, it saves valuable storage space behind the counter. Staff can fold and lock the cartons on demand as slices are sold.

Artisan Food Markets and Delis

The curved back and sharp front point offer a premium look that elevates specialty items in a competitive retail display.

Boutique Gifting and Event Favors

The distinctive shape makes this carton a strong choice for individual event favors, where the unboxing experience and unique geometry add value.

When to Consider Alternative Wedge Cartons

High-Volume Automated Packing

This carton requires manual dexterity to interlock the front apex tabs. If you are packing thousands of slices on an automated line, a pre-glued or machine-erected tray is often a better choice.

Parcel Shipping and E-commerce

The friction-locked front apex is designed for hand-carry retail environments. For parcel shipping, the loaded wedge box must be packed inside a rigid outer shipper to prevent the lock from disengaging during transit.

Board Flexibility and Assembly Planning

Board Grade and Grain Direction

The defining feature of this box is the curved rear wall. The board must be flexible enough to bow smoothly without the liner cracking. Folding boxboard (FBB) or solid bleached sulfate (SBS) is required, and the grain direction must run parallel to the height of the carton.

Manual Assembly Labor

While the box folds quickly, interlocking the front point requires specific hand movements. Consider the assembly time required for your retail staff during peak hours.

Print Surface and Scuff Risk

The large, curved rear wall and the full-cover lid provide excellent, uninterrupted surfaces for branding. However, heavy varnishes or stiff laminations on the rear wall should be tested, as they can increase the risk of cracking when the panel is forced to curve.

Food Contact Barriers

If packing moist or greasy bakery items directly into the carton, verify that the chosen board includes a suitable poly-coating or grease-resistant barrier.

Adjusting the Wedge Angle and Lock Friction

Wedge Angle and Footprint

The length of the straight sides and the width of the curved back can be adjusted to match the exact cut angle of your product, ensuring a snug fit.

Locking Tab Friction

The cuts and slits that form the front apex lock can be fine-tuned based on the chosen board thickness to ensure the lock holds securely without being too difficult to assemble.

Lid Window Addition

A display window can be added to the top lid to display the product, provided the cutout is kept away from the curved hinge and the front tuck tongue.

Board and packing details

Storage and Flat Delivery

Because the carton is unglued, it ships and stores completely flat. This reduces inbound freight volume and saves space in crowded retail or bakery environments.

Corner Rounding Variations

F40.01.00.00.22 (Three Rounded Corners)

A variation where all three corners of the triangular base are rounded, rather than having a sharp front point.

F40.02.00.00.22 (Two Rounded Corners)

A variation featuring a triangular base with two rounded corners.

Additional notes

Front Apex Lock Stability

The stability of the entire box relies on the front point staying locked. If the board is too thin, the lock may disengage under pressure. Physical testing of the lock in your chosen material is essential.

Related Specialty Cartons

Triangular Tray with Straight Walls

Consider if your product has a flat back edge rather than a curved radius, allowing for simpler straight-line folding.

FAQs

Material and Production

Can this box be made from corrugated board?

Fluted corrugated board is generally too thick and rigid to smoothly form the curved rear wall. Forcing fluted board into this curve often causes heavy crushing and liner cracking. Flexible folding boxboard (FBB) or solid bleached sulfate (SBS) is recommended.

Assembly and Closure

Does this carton require glue or tape?

The design is a single-piece blank that uses specialized cuts and tabs to interlock at the front point. The lid then tucks into this locked apex, holding the structure together through friction without the need for adhesive.

Can this box be erected by a machine?

The interlocking mechanism at the front apex requires manual dexterity to align and seat the tabs. It is designed for hand assembly at the packing station or retail counter.

Product Fit

How do I ensure my product fits the curve?

The template's straight side length and back width dictate the angle of the wedge. We recommend measuring your exact product slice and testing a physical unprinted prototype to confirm the fit and the curve's behavior.

Shipping and Route

Is this box safe for ecommerce shipping?

On its own, the friction locks are designed for retail presentation and hand-carry. For parcel shipping, the loaded wedge box must be packed inside a sturdy corrugated outer shipper.

Material and Production

Why is grain direction so important for this box?

The rear wall must bow into a 3D curve when the box is folded. If the paperboard's grain runs the wrong way, the material will resist the curve and the printed surface will crack. The grain must run parallel to the height of the box.

Design and Options

Can a window be added to the lid?

A display window can be cut into the top lid to show the product inside. The cutout must be kept a safe distance from the curved rear hinge and the front tuck tongue to maintain the lid's stiffness.

Assembly and Closure

Does the front lock stay closed on its own?

Yes, the front apex uses a friction lock. However, the stability depends on matching the exact cut dimensions to the board thickness. Testing a physical sample is necessary to ensure the lock holds securely without being too tight to assemble.