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EVF91001

Paperboard Envelope

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.
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Product details

Top highlights

Strictly for flat goods with no native depth
Top flap closes with a sticker, adhesive, or tape strip
Delivered flat and pre-glued for immediate loading

About this product

The EVF91001 is a flat paperboard envelope designed for documents, gift cards, photographs, and thin apparel accessories. It forms a tight pocket with a top closure flap, providing a clean presentation surface for retail or fulfillment.

Because this package has no side walls or gussets, it relies entirely on the natural flex of the paperboard to accommodate items. If you are packing bulky or rigid goods, a shallow mailer or gusseted pocket will be a better fit.

Common uses

Gift cards and retail vouchers
Photographs and printed media
Thin apparel accessories like scarves
Document and contract handoffs

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Common uses for flat paperboard envelopes

Gift cards and vouchers

The flat profile and large, uninterrupted front and back panels provide a clean surface for high-quality graphics, foil, or embossing when presenting retail vouchers.

Photographs and prints

Provides a protective sleeve for flat printed media, keeping edges sharp and surfaces free from direct scuffing during handoffs.

Thin apparel accessories

Suitable for flexible, thin items like scarves or pocket squares, where the paperboard can bow slightly without damaging the product or stressing the glued seams.

Document and contract handoffs

Used by real estate, automotive, and premium service businesses to present folded documents in a more structured, branded package than a standard paper envelope.

Retail and fulfillment environments

Retail presentation

Often used as a secondary presentation layer at the checkout counter. The paperboard envelope feels more deliberate and structured than a simple paper bag.

Repeat fulfillment kitting

Because the side and bottom flaps are glued during manufacturing, the envelope arrives ready to load. Packers simply slide the item in and fold the top flap, making it a fast choice for flat-goods kitting.

Direct mail campaigns

Acts as a branded outer layer for flat promotional mail. When routed through postal systems, the top flap needs a secure adhesive seal to stay closed during transit.

When to consider gusseted or 3D mailers

Packing rigid or bulky items

This envelope has zero native depth. Trying to force a thick, rigid item inside will distort the board and risk bursting the glued seams. A shallow corrugated mailer or a gusseted folder handles depth better.

Mailing fragile goods

While paperboard envelopes work well for direct handoffs or as inner packaging, they offer minimal crush resistance. If mailing items that cannot bend, consider a rigid mailer or adding a stiff insert card.

Closure and board choices

Top flap closure method

The top flap does not lock into place on its own. You will need to decide whether to seal it with a branded sticker, a pre-applied peel-and-seal adhesive strip, or leave it unsealed for easy retail inspection.

Board stiffness versus flex

A thicker board provides a more premium feel but reduces the internal capacity of the pocket. If your item has slight thickness, a slightly lighter board may bow more easily to accommodate it.

Print surface and seam placement

The back of the envelope features a visible seam where the bottom flap overlaps the side flaps. Keep critical text or continuous graphics away from this transition to ensure a clean look.

Adhesive strips versus manual stickers

Adding a peel-and-seal strip during manufacturing speeds up fulfillment for repeat kitting. Manual stickers require more labor on the packing line but offer a branded touch for retail handoffs.

Flap and profile adjustments

Flap proportions and coverage

The height of the bottom pocket and the top closure flap can be adjusted. A deeper top flap provides more sealing area, while a lower pocket reveals more of the inserted product when opened.

Corner rounding

The corners of the top and bottom flaps can be rounded or squared off to match your brand's visual style.

Window patches

A die-cut window can be added to the front panel to reveal a barcode, address, or the product inside. If the product needs protection, a clear film patch can be applied during manufacturing.

Packing details

Automated folder-gluer routing

This envelope runs efficiently on standard straight-line folder-gluers. The side flaps fold in first, followed by the bottom flap, which is glued to form the pocket.

Additional notes

Grain direction and cracking

For the cleanest folds, the paperboard grain should run parallel to the main horizontal creases. This prevents the board from cracking when the pocket is folded flat.

FAQs

Can this envelope be made from corrugated board?

This template is designed specifically for folding carton paperboard. The flaps must fold 180 degrees completely flat, which would crush corrugated flutes and create a bulky, uneven profile.

How thick can my product be?

Because there are no side walls, capacity relies entirely on the paperboard bowing outward. It is suited for items under a few millimeters thick. Anything thicker risks distorting the glued side seams.

Does the top flap stay closed on its own?

The top flap simply folds down without a locking mechanism. To keep it closed, apply a sticker, use a peel-and-seal adhesive strip, or insert it into an outer mailer.

How is this envelope delivered?

It is delivered flat and pre-glued. The side and bottom flaps are sealed during manufacturing, so you receive a finished pocket that is ready to load.

Can I add a window to the front?

A die-cut window can be added to the front panel to reveal the product inside. If the product needs protection, a clear film patch can be applied during manufacturing.

What is the sealing method for mailing?

Peel-and-seal adhesive strips are fast for fulfillment, while branded stickers fit hand-delivered retail items. If mailing through postal systems, ensure the adhesive is rated for automated sorting.

Will the back seam interfere with my artwork?

The bottom flap overlaps the side flaps on the back, creating a visible seam. It helps to keep continuous graphics or small text away from this transition.

Is this envelope suitable for postal mailing?

Paperboard envelopes are flexible. If mailing photographs or certificates, you may need to add a rigid insert card to prevent bending during transit. The top flap must also be securely sealed with a strong adhesive.