Matt Answers

How Do I Qualify a Second Source Flexible Packaging Supplier in the USA?

How to qualify a second source flexible packaging supplier in the USA: matching the spec, line trials, documents, color approval, and a transition plan.

Short answer

A second source flexible packaging supplier protects your supply if your current supplier has a problem. Qualify one by giving it your approved spec, running a line trial, matching color to your current standard, and collecting food safety and compliance documents before you need it. Do it while supply is calm, not during an emergency.
Brand, co-packer, and packaging supplier workflow
Buyer diagramVisual context for how do i qualify a second source flexible packaging supplier in the usa?.

Key takeaways

  • Start before there is a crisis.
  • Share the approved spec, roll labels, and artwork.
  • Run a trial and approve color against a standard.
  • Keep the second source active with some volume.

Why a second source

One supplier means one plant, one schedule, and one set of raw materials. A qualified second source gives you options when capacity, quality, or logistics change.

What to send

Send the approved specification, current samples, roll labels, artwork and plates information, machine details, annual usage, and order quantity.

Trial and approval

Run film or bags from the second source on your line. Compare seals, tracking, speed, and appearance to the current supply, and record the results.

Color and artwork

Agree on a color standard and approve a press proof. Make sure barcodes and legal copy match.

Keep it active

A second source that never ships can lose its setup. Many buyers place some volume with it so plates, specs, and contacts stay current.

How to compare your shortlist

Ask every supplier the same questions on the first call. Which plant will run the job, and does its certificate cover that site? Which print method and how many colors in one pass? How is color approved and by what standard? What starts the lead time clock, purchase order or approved artwork? What documents come with the first order? Who is your day to day contact when something goes wrong? Write the answers in one table. The supplier that answers clearly and in writing is usually the one that will run your job the same way every time.

Where PCI fits

Where PCI fits: Matt Louie, who writes this site, sells for Poly Craft Industries (PCI). PCI prints by flexographic printing only, runs new 10 color presses, is SQF and GMI certified, quotes a standard lead time of 3 to 4 weeks after artwork approval, and supplies brands sold at major retailers. That makes PCI one supplier to put on a short list, not an automatic answer. Use the checks on this page to compare PCI with every other supplier you are considering.

Next step

If you want PCI to quote your spec, send it to Matt directly through the quote form at /quote/, use Ask Matt at /send-your-package/, email Matt@PolyCraftInd.com, or call Matt at (516) 849 6237.

Questions buyers ask

When should I start qualifying a second source?

Before you need it. Qualification takes time for samples, trials, and documents.

Will a second source match my current film exactly?

It should meet the same specification. Confirm with a trial and color approval.

Do I have to split volume?

Not necessarily, but some volume keeps the second source ready.

What lead time should I expect for a first order?

Ask each supplier. PCI's standard lead time is 3 to 4 weeks after artwork approval.

Source basis: MATT-PCI-FACTS-2026-10-14. Customer details, prices, volumes, and identifying artwork are intentionally excluded.
Written byMatt Louie
PublishedOctober 14, 2026
Last reviewedOctober 14, 2026
Review statusGeneral packaging education
SourcesMATT-PCI-FACTS-2026-10-14

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