GMI Full Certification Renewed: Walgreens Preferred Printer Program Context
In 2016, Netpak announced that its GMI Full Certification had been renewed for another two years following an onsite audit. The renewal supported Netpak’s participation in the Walgreens preferred printer program at the time and reinforced the role of certified colour control in litho offset folding carton production.
GMI-related print quality control connects file preparation, proofing, plate making, press production, measurement and production documentation.
Why the 2016 GMI renewal mattered
The renewal showed that Netpak’s litho offset process had passed an onsite review for print control, equipment performance, operator capability and documentation. For retail packaging programs, that matters because brand colours need to remain consistent across cartons, product families and repeat orders.
What Netpak announced in 2016
The original post announced that Netpak’s GMI Full Certification had been extended for another two years. It also stated that the renewal allowed Netpak to be part of the Walgreens preferred printer program at the time.
The announcement was specific: an onsite audit was conducted by a GMI certification engineer in October 2016. The audit evaluated Netpak’s litho offset packaging operation through five areas: process control and documentation, equipment maintenance, training procedures, operator capability and equipment performance.
The original post also explained that the print test measured Netpak’s ability to match spot colours. For brand owners and retailers, that point matters because spot colour consistency is one of the most visible signals of packaging quality and brand control at shelf.
This updated article keeps the Walgreens preferred-printer program language as historical context from the 2016 announcement. It then builds from that announcement into the broader reason GMI-style controls continue to matter for offset printed folding cartons.
Original announcement facts
- 1GMI Full Certification renewed for another two years.
- 2Onsite audit conducted in October 2016.
- 3Audit connected to Walgreens preferred-printer participation at the time.
- 4Print test measured spot colour matching capability.
- 5Renewal supported documented brand-standard compliance.
What the onsite GMI audit evaluated
GMI certification is valuable because it looks at the systems behind print output. The audit areas described in the original announcement show that colour consistency depends on documented process, maintained equipment, trained operators and measurable production performance.
Process control and documentation
The printer must be able to show how print conditions, colour targets, checks and corrective actions are controlled and documented.
Equipment maintenance
Consistent packaging output depends on equipment condition, calibration, press control and maintenance routines.
Training and operator capability
Procedures matter only when the production team can apply them consistently across prepress, press and finishing.
Equipment and print performance
Print tests help evaluate whether the facility can reproduce spot colours, CMYK builds and brand graphics within approved expectations.
Why retailers and brand owners use certified printers
Retailers and brand owners use packaging specifications to protect consistency at shelf. A colour shift, poor registration, damaged visual presentation or inconsistent reorder can make products appear unrelated, outdated or lower quality, even when the product inside has not changed.
Industry descriptions of GMI note that major retailers, including Walgreens, Target, CVS and Home Depot, commonly specify GMI-certified suppliers for packaging print programs.1 For a packaging buyer, the key point is not the retailer name alone. The key point is that certification can be part of the path to supplier approval and shelf consistency.
For folding carton programs, this matters most when the brand uses multiple SKUs, frequent reorders, retailer-specific versions, seasonal graphics or a strict brand-colour system. Certification gives the project a more measurable production basis.
Retail packaging risks certification can help reduce
- 1Visible colour variation between product families or reorders.
- 2Inconsistent brand presentation across retail locations.
- 3Delayed approvals caused by uncontrolled proofing or press results.
- 4Rework, rejects or launch friction tied to print-quality issues.
- 5Unclear responsibility when colour output falls outside expectations.
Why GMI matters for offset printed folding cartons
Offset printing is often used for folding cartons that require detailed graphics, controlled colour, clean typography and premium retail presentation. GMI-style process control helps keep those visual standards connected to measurable production practice.
Files and proofs need control
Artwork, dielines, colour targets, trapping, barcode zones, separations and finishing layers should be checked before plate production.
Colour needs measurement
Brand colours should be controlled through defined print conditions, measurement practices and documented production checks.
Conversion must protect the print
Coating, die-cutting, folding, gluing, packing and delivery must support the quality achieved on press.
Colour control should be planned before production, especially for brand-critical cartons, retailer programs and repeat orders.
A carton family has to look consistent across versions
The same brand colour may appear across different carton sizes, products, languages, retailers and seasonal campaigns. GMI-certified workflows help manage that consistency through process control rather than visual judgment alone.
How Netpak helps prepare GMI-sensitive carton programs
For brand owners, retailer programs and multi-SKU packaging launches, GMI-sensitive carton work benefits from early alignment. Netpak helps connect artwork, colour targets, print surface, board grade, coatings, finishing and production requirements before the project reaches press.
That planning is especially useful when a carton family has to maintain the same brand colour across different product versions, languages, quantities or reorder cycles. By reviewing the technical requirements early, Netpak can help protect the visual consistency that retailers and brand teams expect at shelf.
The same production discipline reflected in the 2016 GMI renewal remains relevant to modern litho offset packaging: controlled files, controlled colour, controlled press conditions and controlled conversion all support a cleaner path from approved artwork to finished carton.
What Netpak can review with your team
- 1Brand colour standards, proofing expectations and artwork readiness.
- 2Retailer, brand-owner or program-specific packaging requirements.
- 3SKU count, product-family consistency and reorder planning.
- 4Board grade, print surface, coating and finishing choices.
- 5Production, die-cutting, folding, gluing, packing and delivery needs.
How Netpak supports controlled offset packaging programs
Netpak’s offset-printing capabilities are built around folding carton production, including colour control, material planning, prepress, plate production, press control, finishing and converting.
Certified colour workflow
Netpak’s offset-printing service page identifies GMI-certified colour control as part of its folding carton offset printing capability.2
Packaging production standards
For food, pharma, beauty, retail and consumer goods, print quality should be reviewed alongside quality, food safety, sourcing and production controls.
Carton manufacturing alignment
Board grade, coatings, die-cutting, folding, gluing, warehousing and delivery should be planned with print requirements, not treated separately.
Review GMI-sensitive folding carton requirements with Netpak
Send Netpak your artwork, brand colour standards, retailer requirements, carton dimensions, board preference, finishing needs, SKU list, quantities, reorder expectations and launch timeline. Netpak can help evaluate the print and production requirements for controlled litho offset packaging.
Continue planning print quality and folding carton production
These Netpak resources can help align offset printing, artwork files, carton structure and production requirements before quoting or approval.
Offset printing for folding cartons
Review certified sheet-fed offset printing for controlled folding carton production.
Open service page
Artwork guidelines
Prepare files, dielines, colour targets and technical zones before production.
Open guidelines
Custom folding cartons
Review structures, materials, print options, finishing, warehousing and logistics.
Open product pageFlexographic or offset printing
Compare flexo and offset printing for folding carton packaging programs.
Open articleSources
- Graphic Measures International, GMI Standard. https://enhancequality.com/standards/graphic-measures-international-gmi/
- Netpak, Offset Printing for Folding Cartons. https://www.netpak.com/en/packaging-services/offset-printing/
- Netpak, Custom Folding Cartons. https://www.netpak.com/en/products/folding-cartons/
- Netpak, Artwork Guidelines. https://www.netpak.com/en/support/artwork-guidelines/