Case studies
Four programs, and the one decision that changed the result.
Client names are withheld under the programs' own confidentiality terms, and the ranges below are the specification bands rather than one client's numbers. What is real is the decision: each case turned on a single structural or material choice, and each one had a cheaper option that failed first.
Case 01 · Personal care, EU
The gift box that had to survive air freight.
A skincare set shipped in a magnetic rigid box was arriving with the wrap paper splitting along the lid edge. The box was not too weak; the lid corner radius was too tight for a 157 gsm wrap, and the wrap had no score on the turn-in.
- Change made
- Radius opened from 2 mm to 5 mm, wrap scored at the turn-in, lid tolerance relaxed by 0.5 mm
- Spec band
- 2.0 mm greyboard, 157 gsm wrap, matte lamination, magnet closure
- Result
- The split disappeared on the following three shipments; the box reads the same on the shelf
- Cheaper option that failed
- Thicker wrap — it made the crease worse, not better
Case 02 · Supplement, Japan
The carton that failed on the crease, not the board.
A 350 gsm folding carton with full-coverage matte lamination was cracking along the front crease after three open-close cycles. The board was adequate; the film was bridging a fold that had no score allowance.
- Change made
- Lamination stopped 1.5 mm short of the crease on both sides, added a score line, dropped to 300 gsm with a stiffer grade
- Spec band
- 300 gsm FBB, offset CMYK plus one Pantone, spot UV on the logo only
- Result
- Crease held through repeated handling; unit board cost fell slightly despite the extra score step
- Cheaper option that failed
- Switching to gloss film — same bridge, more visible cracking
Case 03 · Small electronics, Southeast Asia
Two cartons became one mailer.
A 1.8 kg device shipped in a retail carton inside a plain shipper. The shipper cost was paid by the client for no customer-facing benefit, and the double packing added a packing step on every order.
- Change made
- One-piece E-flute mailer with a die-cut fitment holding the device and its cable, printed one colour on a white top liner
- Spec band
- E-flute, 1,000 pcs MOQ, flexo one colour, self-adhesive peel strip
- Result
- One packing step removed and one carton eliminated; the parcel that arrives is the unboxing
- Cheaper option that failed
- Reusing the retail carton as the shipper — it crushed at the corners on courier handling
Case 04 · Hardware, EU
The blister that became paperboard.
A tool-accessory kit was specified as a blister on printed card. The retailer's vendor pack for that market pushed back on the plastic format, and the tooling had not yet been cut — which turned out to be the whole advantage.
- Change made
- Moulded pulp tray inside a printed paperboard sleeve with a die-cut window, same hanging format
- Spec band
- 400 gsm sleeve, pulp tray, window film only where the product had to be visible
- Result
- Format accepted for that market without a plastic tool being paid for; window film remains the one element to re-check
- Cheaper option that failed
- Cutting the blister tool first and switching later — the tooling cost would have been lost
We can walk through the dielines of these programs on a call, subject to the confidentiality terms each one carries.
Pattern
Three things these four cases have in common.
The sample found it
Every one of these problems was visible on a plain sample or a first-off, before a full run was paid for.
The fix was structural
None of them was solved by a better material. They were solved by a radius, a score, a fitment or a format.
Someone asked early
Market and retailer rules were raised before tooling. After tooling, the same question becomes a budget conversation.
What you get in writing
Every case ends with a document, not a story.
The revised dieline
The drawing that was actually cut, with the radius, the score position and the tolerance band marked on it. It becomes the reference for the next run.
The inspection plan
Which dimension is measured, at which gate, with which instrument and against which AQL. Written before the first sheet is printed.
The cost comparison
The option we rejected, and the number that made it fail. It is the part most suppliers leave out, and the part that decides the next programme.
Before you read them
The questions these cases usually raise.
Are these real customers?
The programmes are real and the specs are the ones actually run. Brand names, artwork and dielines are removed because they belong to the client, and several are still in production.
Can I see the dieline or the sample of case 01?
Not without the client's agreement. What we can share is the construction principle and the tolerance band we moved to, which is on the page already.
Are the results verified numbers?
They are the measured outcomes of the run: the failure rate we counted before and after, the grammage change, the carton count per pallet. They are not an average across all projects, and we would not present them as one.
Will the same fix work on my box?
Sometimes. Radius, score depth and wrap tension interact with the board you chose, so the fix has to be re-checked on your dieline. Send the structure and we will say whether the failure mode matches.
Your box has a problem you cannot name yet?
Send a photo of the failure and the current spec. Describing the symptom is usually enough to narrow the cause.