ECMA B10.04.00.00

Double-Wall Webbed Corner Tray

This unglued folding carton tray uses webbed corners and 180-degree rollover flaps to create four double-thick walls. The result is a rigid presentation tray with a completely clean interior and no exposed raw board edges.

Because the corners fold inward as a continuous web rather than separate cut flaps, the base has no gaps. This makes it a strong choice for bakery items, confectionery, or cosmetics where a pristine look and sift-resistant floor are useful, though it does involve dedicated manual folding.

  • Order custom samples, short runs, or production runs.
  • US-based. Nationwide service.
  • Nationally competitive pricing & delivery costs.
  • Available in a wide variety of configurations.

At a glance

  • Four double-thick walls for rigidity and a premium feel
  • Continuous webbed corners help prevent small items or powders from sifting out
  • Ships flat and locks together entirely by friction, requiring no adhesive

Common uses

  • Premium cosmetics
  • Bakery and confectionery
  • Rigid inserts and kitting
  • High-end apparel

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Practical Uses For The Double-Wall Webbed Tray

Premium Retail Presentation

The double-wall construction and hidden corner webbing create a tray with a smooth, unbroken interior. This provides a high-end framing effect for cosmetics, electronics, or luxury goods, especially when paired with a custom insert.

Bakery and Confectionery

Standard trays often have small gaps at the bottom corners where dust flaps meet. The webbed corners on this design keep the base continuous, helping to prevent crumbs, sugars, or small candies from sifting out during handling.

Rigid Inserts and Kitting

The double-thick walls provide a sturdy perimeter for holding heavy or complex inserts. The friction locks stay secure when the tray is handled carefully during multi-part kitting operations.

High-End Apparel or Soft Goods

Because the rollover flaps hide all raw board edges, delicate fabrics are less likely to snag. The clean interior presentation elevates the unboxing experience for boutique clothing.

Packing And Fulfillment Contexts

Hand-packed kitting and assembly

Because the tray requires no adhesive, it can be stored completely flat in high volumes and erected on demand at the packing station. The assembly involves folding the walls, collapsing the corners, and rolling the inner flaps over to lock them into the base.

Short-run or seasonal promotions

The unglued design bypasses folder-gluer manufacturing, making it easier to produce in smaller batches for seasonal campaigns or limited-edition product launches.

Flat-shipping logistics

Delivering the trays flat maximizes pallet density. This reduces inbound freight volume compared to pre-glued or rigid setup boxes, shifting the volume expansion to the final packing facility.

When To Compare Glued Or Simpler Trays

High-speed fulfillment lines

The four rollover flaps and webbed corners involve careful manual folding. If packing speed is the primary bottleneck, a pre-glued tray or a crash-lock base will reduce assembly time.

Mixed-carrier transit

This is an open presentation tray held together by friction locks. For rough parcel or courier shipping, it is usually placed inside a fitted outer mailer or shipping box to keep the locks secure.

Board, Print, And Packing Decisions

Board Caliper and Crease Allowances

The board should be flexible enough to handle a 180-degree fold without cracking, yet stiff enough to keep the locking tabs seated. The exact board thickness should be checked early so the crease offsets can be adjusted; otherwise, the inner walls may bow.

Single-Sided Print Efficiency

Because the inner walls are formed by rolling the outer extensions inward, both the exterior of the tray and the interior walls are printed on the same side of the flat sheet. This allows for full-color branding inside and out without requiring two-sided printing.

Assembly Labor versus Pre-glued Manufacturing

This unglued design avoids folder-gluer manufacturing, but shifts that effort to the packing floor. Buyers should weigh the unglued manufacturing path against the manual labor required to fold the double walls and corners.

Outer Shipper Requirements

If the tray will be shipped directly to consumers, the dimensions of the outer mailer or shipping box should be planned alongside the tray to ensure a snug fit that prevents the friction locks from disengaging.

Tray Adjustments And Options

Locking Tab Sizing

The friction tabs that hold the rollover walls in place can be lengthened or shortened based on the board grade to ensure a secure hold without tearing the base slots.

Wall Height and Blank Sprawl

Increasing the tray depth noticeably increases the overall size of the flat blank, as the rollover flaps extend twice the height of the wall. This can reduce how many trays fit on a single press sheet.

Crease Profiling for Webbed Corners

The diagonal creases in the webbed corners can be adjusted or pre-broken during die-cutting to ensure they collapse smoothly. If the board is too stiff or the creases are ignored, the corners can crush unpredictably when the walls are folded up.

Board and packing details

Board grain direction

For the cleanest 180-degree rollover folds, the board grain should typically run parallel to the longest fold lines. This reduces the risk of the paperboard cracking along the top edge of the tray.

Blank nesting and material usage

Because all four walls fold over themselves and the corners are fully webbed, the flat blank for this tray is noticeably larger than a standard glued tray of the same volume. This can reduce how many trays fit on a single press sheet.

Variants

B10.04.00.00.a close EngView variant

B10.04.00.00.a stays in this double-wall webbed-corner tray family. Treat it as a close variant for the same reinforced tray need, then compare the corner-web shape and panel sequence before production.

Additional notes

Packing labor versus unglued manufacturing

This unglued design bypasses folder-gluer manufacturing, but shifts that effort to the packing floor. Buyers should weigh the unglued manufacturing path against the manual labor required to fold the double walls and corners.

FAQs

Assembly and Packing

How long does it take to assemble this tray?

It is slower to erect than a standard snap-lock or pre-glued tray. The packer folds all four walls, manages the diagonal corner webbing, and rolls over the four inner flaps to lock the structure. It is often used for lower-volume or premium packing lines.

Product Fit

Is this tray liquid-tight?

While the webbed corners help prevent dry goods like crumbs or powders from sifting out, the folded paperboard is not sealed against liquids.

Print and Finish

Can the inside of the tray be printed?

The inner walls are extensions of the outer walls, meaning the entire visible interior (walls and floor) can be printed on the same side of the flat sheet as the exterior.

Materials

Can this be made from heavy corrugated board?

The design relies on the board folding 180 degrees over itself and forming tight diagonal bellows folds in the corners. Heavy corrugated flutes will often crush and bind, making this structure better suited for folding carton board (FBB, SBB, or WLC).

Shipping

Can I ship this tray on its own?

Because it is an open-top tray secured by friction locks, it requires an outer mailer or shipping box for parcel or courier transit.

Assembly and Packing

Do the corner creases need to be pre-broken?

For smooth manual assembly, pre-breaking the diagonal creases in the webbed corners helps the corners collapse inward naturally without crushing the board.

Does this tray require adhesive?

The entire structure is held together by friction locks. The inner rollover flaps feature small tabs that seat into slots at the base of the tray, eliminating the need for glue.

Product Fit

Will the locking tabs pop out if the tray is overfilled?

If the side walls are pushed outward by a tight or overfilled product, the tension on the rollover flaps can cause the locking tabs to disengage. The tray dimensions should be sized to allow the product to fit without bowing the walls.

A clean, gap-free presentation tray that relies on smart folding rather than adhesive.

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