Tuck Top Mailer Boxes

I. Product Features

One-piece forming, no tape needed
The box is diecut and creased from a single sheet of paperboard (cardboard or corrugated). When the top tuck flap is closed, its front tongue inserts into a slit on the front panel, creating a selflocking mechanism using the board’s own tension. No tape or glue is required – ecofriendly and efficient.

Flat-packed for shipping, quick to assemble
All boxes are shipped flat to save storage and transport space. Users simply fold along the crease lines and insert the tuck flap – assembly takes about three seconds, making it ideal for manual or automated packing lines.

Multiple variations available
We offer straight tuck, rollend tuck top (RETT, with a curved edge for smoother insertion), reverse tuck, and other structures to meet different product sizes and opening frequency requirements.

II. Key Advantages

1. Protection – High-strength corrugated or thick paperboard with precision creasing delivers reliable pressure and impact resistance.

2. Unboxing experience – No tape; just lift the flap. The box is neat and square, and large printable surfaces turn it into a mobile billboard. Great for subscriptions, DTC shipments, and lightluxury small items.

3. Cost and efficiency – Onepiece design reduces material use and eliminates sealing steps, lowering labour costs – a clear win for highvolume ecommerce sellers.

4. Sustainability – Made with FSC®certified paper and waterbased inks. No plastic tape means 100% recyclability, reinforcing your brand’s plasticreduction commitment.

III. Manufacturing Processes

Material selection

Light & small items (<500g): 300–400g white or grey board – smooth surface, excellent print quality.

Medium-weight items (500g–3kg): Eflute or Fflute singlewall corrugated – good stiffness with reduced thickness.

Die-cutting & creasing
Using high-precision flat-bed die-cutters, we keep the tuck flap-to-slit tolerance within ±0.2 mm. Too tight makes closing difficult and risks finger scratches; too loose causes the flap to pop open. To overcome this, we adjust tooling for each box style and test physical samples

Surface finishing
We offer gloss or matte lamination, spot UV, foil stamping, embossing, and more. For laminated tuck flaps, we use a partialcut (kisscut) technique to keep the flap flexible while preventing film tearing.

Assembly testing
Before mass production, we provide 5–10 handfolded samples for your trial. During production, we regularly check the insertion resistance and squareness of the box to ensure “smooth to close, secure when closed”.

IV. Main Applications

Direct-to-consumer shipping – Apparel, accessories, digital gadgets, small appliances, beauty tools – no extra poly bag needed.

Subscription boxes – Monthly beauty boxes, pet snack boxes, tea subscription boxes – customers can open and close repeatedly.

Retail display – Perfect for boutiques or popup shops – just open the tuck flap to show the product.

Light electronics – Phone cases, cables, smartwatch bands – the tuck top offers just the right level of protection.

We are not just making a box – we are creating a “wordless unboxing surprise” for your brand. If you are looking for shipping packaging that combines protection, aesthetics, and cost efficiency, please feel free to contact us for samples or a quote.