TL;DR: Specifying “meets ISO standards” on a packaging brief tells us almost nothing — the standard you cite needs to match the market, the substrate, and the test method, or your supplier will pick whichever interpretation passes easiest.
TL;DR: In our experience reviewing incoming briefs, roughly 60% of tenders for flexible laminates reference at least one standard incorrectly — the most common error is citing ISO 11607 (medical device packaging) instead of ISO 15223 or the relevant food-contact migration standard.
Why “Standard Compliant” Means Different Things in Different Factories #
A brief lands on our desk citing “ASTM compliant laminate, food safe.” That tells us almost nothing actionable. ASTM publishes dozens of test methods applicable to flexible films — tensile, seal strength, oxygen transmission, water vapor transmission, puncture resistance — and each one has a scope, a specimen prep protocol, and a reporting unit that differs from its ISO or GB/T equivalent. When we see a vague standards citation, our internal process flags it under what we call a Category B brief gap before we even open the spec sheet.
The underlying problem is that buyers often copy standards language from a previous supplier’s spec sheet without verifying whether that standard applies to the new substrate, new market, or new product format. A retort pouch for the Japanese market has a completely different standards profile than a cold-fill snack pouch for the EU. Using the same boilerplate brief for both will generate a quote — but not necessarily the product you expected.
This article maps the standards that actually govern flexible film and laminate packaging across the four major buying markets (US, EU, China, Japan), explains where they align and where they diverge, and gives you the citation precision needed to write a brief that produces a consistent, comparable response across multiple suppliers.
The Standards That Actually Appear in Tenders — and What Each One Tests #
Start with barrier properties, because these drive material selection more than anything else.
Oxygen transmission rate (OTR) is tested per ASTM D3985 or ISO 15105-2. Both use coulometric or electrochemical detection, but conditioning protocols differ: ASTM D3985 specifies 23°C/0% RH as the default reporting condition, while ISO 15105-2 specifies 23°C/50% RH. A film showing 3.0 cc/m²·day·atm under ASTM conditions may test at 4.5–5.5 cc/m²·day·atm under ISO conditions if it contains a moisture-sensitive barrier layer like EVOH. Cite the wrong one and your OTR spec is unverifiable. Water vapor transmission rate (WVTR) has the same issue: ASTM E96 Method B versus ISO 15106-3, with reporting differences at 38°C/90% RH versus 23°C/85% RH.
For seal strength, ASTM F88 is the standard specified in most US and Australian tenders. The EU equivalent is EN 868-5 for medical devices, but for food flexible packaging, the relevant test is more typically cited by the brand’s own internal method referencing ASTM F88 or ISO 11040-4 (for prefillable syringes — often confused with food pack sealing, which has no single universal ISO standard). We test heat-seal strength in-house at 15 N/25mm minimum for stand-up pouches intended for food products, and 20 N/25mm for retort applications, per our internal FP-QC-12 seal validation protocol.
Print quality for flexible packaging gravure and flexo falls under ISO 12647-7 (digital proofing, used as a colour approval reference) and ISO 12647-6 (flexographic printing). G7 calibration methodology, published by the Idealliance organisation, is increasingly specified by US and EU brand owners as a press characterisation target alongside ISO 12647. In China, the equivalent is GB/T 17934.3 for gravure and GB/T 7707 for gravure print colour quality — and these use slightly different density targets. When a US brand specifies ISO 12647-6 on a job printed gravure in a Chinese factory, we flag this combination for alignment before sampling starts.
Migration and food contact is where the most consequential standard confusion occurs. The EU framework is Regulation (EC) No 10/2011 (plastics in food contact), with an overall migration limit of 10 mg/dm² and a specific migration limit for listed substances. The US framework is FDA 21 CFR Parts 174–178 for indirect food additives. Japan uses the Positive List under MHLW Notification No. 370. China uses GB 9685 (additives for food contact materials) and GB 4806.7 (plastic materials). These four frameworks share no single test reference — a substance cleared under FDA 21 CFR may still require specific migration testing under EU 10/2011, and a lamination adhesive approved under GB 9685 may contain a substance not on the EU positive list.
| Property | US Standard | EU Standard | China Standard | Key Difference |
|---|---|---|---|---|
| OTR | ASTM D3985 (23°C/0% RH) | ISO 15105-2 (23°C/50% RH) | GB/T 19789 | Conditioning RH affects EVOH-containing structures |
| WVTR | ASTM E96 Method B (38°C/90% RH) | ISO 15106-3 (23°C/85% RH) | GB/T 21529 | Temperature difference shifts reporting by 2–3× |
| Seal Strength | ASTM F88 | No single EN equivalent for food | GB/T 15789 | EU food pack seal cited by brand internal methods |
| Food Contact | FDA 21 CFR 174–178 | EU Reg. 10/2011 | GB 9685 / GB 4806.7 | Positive list scope and SML values differ significantly |
| Flexo Print Quality | ISO 12647-6 / G7 | ISO 12647-6 | GB/T 17934.3 | Density targets and tone curve targets differ |
| Tensile Strength | ASTM D882 | ISO 527-3 | GB/T 13022 | Specimen width and gauge length differ — values not directly comparable |
The tensile row above is worth pausing on. ASTM D882 uses a 25mm wide specimen; ISO 527-3 uses 15mm. The reported modulus and elongation at break values from the same film will differ because of this. A brief asking for “≥ 150 MPa tensile strength per ISO 527-3” cannot be directly verified against a supplier’s ASTM D882 test report without a conversion note. We see this mismatch in roughly one in four briefs involving multi-market distribution.
Decision Framework — Which Standard to Cite Depends on Your Primary Market #
If your primary distribution market is the EU and you’re producing any food-contact flexible laminate, cite EU Regulation 10/2011 as the food-contact framework and ISO 15105-2 for OTR. The EU customs process and retailer audits are increasingly checking food contact compliance certificates, and an FDA 21 CFR declaration will not substitute.
If your market is the US and FDA 21 CFR compliance is the frame, make sure your adhesive lamination system uses a polyurethane adhesive with no residual isocyanate exceeding the migration test limits. We qualify our solvent-free PU lamination adhesives against FDA 21 CFR 175.105 on every new substrate combination — not just at the adhesive supplier’s level.
If you are supplying into China’s domestic retail channel under a Chinese brand label, GB 9685 and GB 4806.7 are not optional regardless of what other market certifications your film carries. Our QC-07 material risk procedure requires a GB-specific migration declaration for every new ink, adhesive, and film grade used on China-bound food packaging jobs.
For Japan, the MHLW Positive List under Notification No. 370 is the operative framework for plastic packaging. One non-obvious point: Japan’s standard distinguishes between food types (aqueous, fatty, acidic, alcoholic) more granularly than EU 10/2011, and simulants are assigned differently. If you are packaging an oil-based product for Japan, the fatty food simulant testing requirements are stricter than what EU 10/2011 would require for the same product.
Where opinions differ across factories: some converters treat FSC certification as a standards requirement for flexible laminate packaging. It is not — FSC applies to paper and board fibre sourcing, and a BOPP/PE laminate has no FSC-claimable content unless a paper or board component is included. We occasionally see FSC cited in briefs for all-film structures, which is a category error. Our position is that PCR (post-consumer resin) content claims for film are governed by ISO 14021 (environmental labelling) and should be third-party verified, but that is separate from FSC.
Specification Notes for Brand Partners #
When you brief us on a flexible film or laminate project, the standards citations that actually unlock an accurate quote are: the food-contact framework for your primary market (FDA 21 CFR, EU 10/2011, GB 9685, or MHLW Notification No. 370); the OTR and WVTR target values with the specific test method and conditioning you require; and the print standard reference (ISO 12647-6, G7, or GB/T 17934.3) along with whether you will supply a certified proof.
The single most common gap we see in briefs is a seal strength requirement stated as a single number without a test method or peel angle. “Minimum 15 N/25mm seal strength” is workable. “Strong seal” is not. Without ASTM F88 or equivalent cited, two suppliers will test at different peel angles and report incomparable values.
Our standard sampling timeline for a new flexible laminate structure is 18–25 working days from approved substrate and artwork. If food-contact migration testing is required as part of sample approval, add 15–20 working days for a third-party lab report. Specifying which migration standard you need (and whether you need an accredited EU or China lab certificate) at brief stage is the single decision that most affects whether sampling runs on time.
What is the difference between ASTM D3985 and ISO 15105-2 for OTR testing?
Both measure oxygen transmission rate, but the conditioning conditions differ. ASTM D3985 defaults to 23°C/0% RH; ISO 15105-2 defaults to 23°C/50% RH. For films with moisture-sensitive barrier layers like EVOH, this difference can shift reported OTR values by 50–80%. Always specify which method and which conditioning you need — a supplier’s test report is only meaningful if both parties agreed on the test conditions upfront.
Does ISO 12647-6 apply to gravure printing, or only flexo?
ISO 12647-6 covers flexographic printing. For gravure, the relevant Chinese standard is GB/T 17934.3, and there is no direct ISO gravure press characterisation standard equivalent to ISO 12647-6. In practice, most gravure converters use ISO 12647-7 digital proofing as the colour approval reference regardless of press type. If you are specifying G7, confirm with your printer whether their gravure line is G7-calibrated — not all are.
Can a film structure certified under FDA 21 CFR automatically be used in the EU under Regulation 10/2011?
No. FDA 21 CFR and EU 10/2011 operate on different legal frameworks with different positive lists and specific migration limits. A substance cleared under FDA 21 CFR may not appear on the EU 10/2011 positive list. You need a migration compliance declaration specifically against EU 10/2011 Annex I for EU food contact claims. These are not interchangeable — the testing scope differs even when the same film grade is used.
What seal strength should I specify for a stand-up pouch intended for dry snack products?
It depends on the closure type and whether the pouch is expected to survive drop or transit stress. For a standard heat-sealed stand-up pouch with a zipper reseal, 15 N/25mm minimum per ASTM F88 is a reasonable baseline for dry product applications. For filled-and-sealed pouches that go through distribution without a zipper, 20 N/25mm provides better confidence. Specify the test method, peel angle (180° for F88), and jaw separation speed — without those parameters, the number alone is hard to verify consistently across suppliers.
Is FSC certification required for flexible film packaging?
FSC does not apply to all-film laminates because FSC certification covers paper and board fibre sourcing. A BOPP/PE or PET/PE structure has no paper or board component to certify. If your brief cites FSC for a flexible film structure, we will flag this for clarification before quoting, because it suggests either a category error in the brief or an intent to include a paper-based component (like a paper label or kraft pouch) that was not specified.
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The WVTR point is the one that actually causes us grief — running ASTM E96 Method B at 38°C/90% RH versus ISO 15106-3 at 23°C/85% RH on the same BOPP/PE structure we’ve seen reported values differ by nearly 2.8× on identical rolls. Suppliers aren’t lying, the conditioning protocols are just genuinely incompatible, and you can’t back-calculate between them without knowing the film’s moisture sorption isotherm.
The WVTR discrepancy bit us hard on a moisturizing serum sachet line in 2021 — supplier quoted compliance against ISO 15106-3 at 23°C, we assumed that mapped cleanly to our ASTM E96 shelf-life model, and by month 4 the foil/PET laminate was showing micro-delamination at the seal jaw area across roughly 8% of the production run. The conditioning temperature gap is not a footnote issue. It completely changes whether your EVOH layer is doing what you think it’s doing.
The OTR conditioning difference between ASTM D3985 and ISO 15105-2 cost us real money last year — we qualified an EVOH structure at 0% RH for a US tender, then had to retest at 50% RH for the same SKU going into Germany, and the barrier numbers dropped enough that we had to upgrade the EVOH layer from 9µm to 12µm, which added roughly $0.09/unit on a 400k annual run.
Watch the conditioning RH on OTR specs especially if your structure has any EVOH layer — we’ve had laminates pass D3985 at 0% RH and fail badly once the same roll was tested under ISO 15105-2 at 50% RH, and the customer had cited “ASTM or equivalent” so the supplier just ran whichever passed.
One that tripped us up on a Japan tender: JIS Z 1707 seal strength uses a 15mm specimen width as default, ASTM F88 lets you report at 25mm, and if your brief doesn’t lock the width down your supplier will hand you numbers that look 40% better than they actually are.
The Category B brief gap flag is a useful framing, but it assumes the substrate is stable enough that a single standards mapping applies across its full lifecycle — we had a situation with a BOPP/AlOx structure where the brief was perfectly cited, ASTM F1927 for OTR, everything locked down, and the converter still came back with non-comparable data because they’d run puncture resistance per ASTM D1709 Method A (dart drop) instead of D1709 Method B. Same standard family, different method suffix, completely incomparable results across three supplier quotes.
Switching from vague “ASTM compliant” briefs to locked-spec briefs with explicit test conditions cut our requalification costs noticeably — we’d been absorbing 2-3 retest cycles per SKU at roughly $800-1,200 per barrier test run across three labs. Tightened the brief language for our EU flexible laminate tenders in Q3 2023 and dropped from an average of 2.7 retest rounds to under 1.2.
The ISO 11607 misuse is rampant — we still get supplier quotes referencing it on stand-up pouches for rinse-off haircare, which is so far outside that standard’s scope it’s almost funny.
The “consistent, comparable response across multiple suppliers” goal is real but the timeline hit is underestimated — when we locked down explicit test conditions on a retort pouch brief for a Southeast Asian co-packer last year, two of our three shortlisted suppliers came back asking for a 3-week extension just to run the GB/T 19789 conditioning cycles before they could even quote barrier performance.