Custom Sustainable Boxes in Unbleached Kraft With Minimal Print

Board Choices

Unbleached kraft liner is the default. It is brown, slightly mottled, and strong for its weight because the fibres are long and unbleached. E flute corrugated, around 1.5 mm, suits mailers up to about a kilo. B flute, around 3 mm, is the choice for shippers and heavier contents. For retail cartons we use a kraft folding boxboard that creases cleanly and stands up on a shelf.

A white-lined kraft, with a thin white top layer over the brown base, is available if you need brighter print on one face. It adds a little weight and cost, so we suggest it only when the artwork genuinely needs it. We do not use plastic-coated boards for this product.

Heavier goods sometimes tempt buyers towards double-wall board, but a well-cut B flute box with a corrugated divider often does the same job with less material. If the contents are glass or ceramic, a moulded pulp tray adds protection in the same family of material; our moulded pulp trays and inserts page covers the standard formats.

Printing With Restraint

One colour on kraft, usually black or white, printed only where it says something, is the look most buyers want from this product. A logo on the lid, a line of text on one side, a message inside. The unprinted brown board becomes part of the design. Two colours allow a brand colour plus black for text.

Large areas of solid ink are the thing to avoid, both for cost and for the look. A flood-coated brown box no longer reads as kraft, and it uses several times the ink of an outlined design. If your brand needs a strong colour presence, a single bold shape or a coloured paper tape achieves it without flooding the box.

Embossing and debossing add texture with no ink and no extra material; a debossed logo on the lid of a kraft mailer is quietly premium. We print the inside of the lid in the same pass if you want it. The debossed mailer boxes with pressed logos show how that finish looks on brown board.

Closures and Packing

The roll end tuck front mailer locks shut with its own flaps and is the fastest box to pack. For a tamper-evident seal, a paper tear strip is glued into the lid at manufacture and tears away cleanly on opening; it is a good alternative to a strip of plastic tape and makes returns simpler because the second flap can be tucked.

Shippers with four top flaps take water-activated paper tape, which bonds to the kraft liner and cannot be lifted and reapplied. We supply the tape plain or printed with your logo. Paper address labels with a paper-friendly adhesive complete the parcel with one family of material from outside to inside.

Inside the box, kraft tissue or a folded card platform holds the product. For a run of mailers that must look identical when opened, a printed card platform holds everything in position and doubles as a message card. Our packaging inserts for online orders are made to the same dielines and arrive flat with the boxes.

Buyers and Typical Orders

Clothing brands shipping folded garments in the apparel mailer with a single-colour logo. Coffee roasters using a small tuck end carton for retail bags. Skincare and candle makers in the medium mailer with a pulp insert. Food producers ordering B flute shippers printed one colour as outer cases for a run of jars.

Many of these buyers run a plain version for wholesale and a printed version for direct orders on the same dieline. Others order a printed paper tape with a plain box so the brand appears on the seal rather than on the board, which keeps the box reusable for the customer.

Reuse is often part of the brief. A box that opens cleanly, has no printed address panel on the lid and comes with a second tear strip can be sent back for returns or reused by the customer. The reusable boxes for returns and refills page describes that construction in more detail.

Quotes, Production and Delivery

Send the internal size, the style, the board you prefer and the number of print colours, plus your logo or artwork. A custom quote comes by email within one working day and lists the board grade, the ink coverage, the closure and any inserts. Minimums are low and set per job. One-colour mailers start from £0.25 on larger runs, and keeping the ink to one colour is the easiest way to reach that price.

A free design proof shows the flat dieline and the folded box. After you approve it, production takes 4–7 working days and delivery is free and tracked to UK mainland addresses in 2–3 working days, flat-packed in outer cases. Misprints or damage reported within 10 days are reprinted or refunded. For the first run, the guide to how custom box pricing works explains where the quantity breaks fall.