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EVF93039

Pop-Open Paper Bag Carton

The EVF93039 is a folding carton designed to function as a self-standing paper bag or pouch. It features inward-folding side gussets and a pre-glued block bottom that allows the package to ship flat and open when the edges are squeezed.

With a prominent fold-over top flap and large, uninterrupted front and back panels, this style is an excellent choice for premium retail presentation, boutique items, and dry goods. Because the top flap does not have a native mechanical lock, it relies on a secondary seal such as a branded label, sticker, or tape.

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At a glance

  • Ships flat and opens into a rigid 3D pouch
  • Pre-glued block bottom supports upright retail display
  • Fold-over top flap relies on a label or sticker to seal

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Retail Bags And Dry Goods Pouches

Boutique and Retail Bags

The self-standing block bottom and clean front panel make this an excellent alternative to traditional shopping bags or standard boxes for premium retail items. The fold-over top provides a natural location for a branded closure sticker.

Dry Goods and Coffee Pouches

Often used for coffee, tea, or dry goods, the bag shape provides good volume containment. Note that unless a specific barrier lining or inner bag is used, the paperboard itself is not airtight.

Premium Gift Packaging

For high-end gifting, the self-standing style and large front panel offer a clean presentation when sealed with a custom label.

Confectionery and Bakery

Useful for lightweight baked goods or wrapped chocolates where a bag style is preferred over a rigid box, provided a food-safe barrier is used.

Boutique Sales And Manual Fulfillment

Manual Pop-Open Fulfillment

Because the bottom is pre-glued at the factory, fulfillment teams only need to squeeze the flat edges to open the bag. This makes manual loading fast, though the final closure requires an extra step to apply a seal.

Shelf Display and Merchandising

The flat block bottom allows the bag to stand upright on retail shelves, maximizing the visibility of the front panel compared to bags that slump.

Flat Storage Requirements

Because the side gussets and bottom fold completely flat, this bag requires minimal storage space behind the counter or in the fulfillment area.

When A Standard Carton Makes More Sense

When a secure mechanical closure is needed

If the packaging must stay closed without tape or labels, or if it will be shipped individually through a courier network, a standard folding carton with tuck flaps or a crash-lock base is usually a better fit.

When packing heavy or dense items

If the product weight might stress a glued block bottom, a crash-lock base carton or a corrugated box provides better support.

Top Sealing And Board Thickness Choices

Planning the Top Seal

The top flap drops over the front face but does not lock into place. A secondary closure, such as a custom label, sticker, or tape, is necessary to secure the contents.

Board Thickness and Bottom Folds

The pre-glued bottom involves complex, multi-layer folds. While standard folding boxboard works well, overly thick or rigid boards can crack or cause the bottom seams to fail when folded flat. The board choice should be checked against the production equipment.

Print Surface and Coating

The large front and back panels provide excellent space for high-quality graphics. Decide if a glossy or matte finish is needed to protect the print during handling.

Inner Barrier Requirements

Since paperboard is not airtight, determine if the product requires a separate inner pouch or a specific barrier coating to maintain freshness.

Bag Depth And Flap Adjustments

Bag Depth and Gusset Sizing

The depth of the bag controls the size of the side gussets and the geometry of the bottom folds. Changing the depth alters the gusset geometry and may require the converter to recalibrate the folder-gluer setup.

Top Flap Extension

The height of the front-facing closure flap can be extended or shortened depending on how much of the front panel you want to cover or where you plan to place the sealing label.

Glue Flap Width

The side seam glue flap can be adjusted to ensure a strong bond, especially if using a thicker board or packing slightly heavier items.

Packing details

Folder-Gluer Routing

This template requires a folder-gluer capable of executing block-bottom or pinch-bottom fold sequences. This is more demanding than a straight-line gluer, making the bag more practical for repeat programs rather than short-run trials.

Additional notes

Machine setup for the pre-glued bottom

The complex folds required to create the collapsible bottom mean the production route must use a specialized folder-gluer setup. This often makes the bag more practical for repeat programs rather than short-run trials.

Related Packaging

FAQs

Does the top flap lock into place?

The top flap folds over the front panel but does not have a native mechanical lock. It relies on a secondary seal, such as a label, sticker, or tape, to stay closed.

Can this bag be used for parcel shipping?

On its own, the fold-over top and paperboard construction are not designed for rough courier handling. It should be placed inside a corrugated outer shipper for parcel delivery.

Is this bag suitable for direct food contact?

That depends entirely on the board and coating chosen. The template itself is just the shape; if you are packing food, you must specify a food-safe board or use an inner barrier bag.

Does the bag ship flat?

The side seams and bottom gussets are glued at the factory, allowing the bag to be delivered completely flat. It opens into a 3D pouch when the edges are squeezed.

Can the bottom hold heavy items?

The pre-glued block bottom provides a flat floor that supports the product, but its weight capacity depends on the board strength and the quality of the glue seams. Heavy items should be tested to ensure the bottom holds securely.

Where is the best place for branding?

The large, uninterrupted front and back panels offer excellent billboard space for graphics. The fold-over top flap is also a very visible area, especially when secured with a branded sticker.

How does the bag stay upright on a shelf?

The pre-glued block bottom creates a flat, rigid floor when the bag is opened, allowing it to stand independently for retail display.

What kind of seal secures the top flap?

A strong adhesive sticker, branded label, or clear tape is typically used to hold the fold-over top flap against the front panel.

A premium, fast-erecting paper bag style that stands out on the retail shelf.