Technical Guide · 2026 Edition
Recyclable Hot Stamping Foil — De-Inking, Compliance & Sustainable Packaging
Foiled paperboard remains recyclable. This guide explains how de-inking removes the 0.5–1.5 µm stamped layer, how spot foil compares with metallised board and laminate, which PFAS-free and EU 94/62/EC compliant grades to specify, and which test reports close a brand-owner packaging audit.
60-Second Answer
Yes — hot stamped paper and board are recyclable. The transferred layer is only 0.5–1.5 µm thick, usually under 0.2% of pack weight, and it never bonds into the fibre. In the mill the board is repulped, and the metallic and polymer layers release as discrete flakes that screening and flotation remove with the ink rejects. Spot foil keeps the rest of the sheet plain recyclable board, unlike metallised laminate. Specify a PFAS-free packaging grade — see gold hot stamping foil and What is Hot Stamping Foil for the layer construction behind these numbers.
Key Engineering Takeaways
- 01
Foiled paper and board stay recyclable: the transferred layer is 0.5–1.5 µm and typically under 0.2% of pack weight.
- 02
De-inking removes foil as discrete flakes in the pulper, screening and flotation stages — often easier to remove than heavy solid-ink coverage.
- 03
Spot foil beats metallised board and laminate: metal only where the design needs it, no solvent, no water, no drying oven.
- 04
The PET carrier never enters the pack — collect spent film as a clean single-polymer stream and specify 12 µm to cut its mass 25–35%.
- 05
Packaging grades are PFAS-free by intent and meet EU 94/62/EC heavy-metal limits, REACH SVHC screening and EN 71-3.
- 06
Keep coverage under ~30% and off glue seams; request INGEDE 11 or PTS-RH 021 testing on your actual artwork for scheme grading.
Why foiled packaging still recycles
A hot stamping foil is a multi-layer transfer built on a PET carrier: release wax, lacquer, a vacuum-metallised aluminium or pigment layer, and a heat-activated adhesive. Only the layers below the release wax transfer to the substrate — a total of 0.5–1.5 µm. Because that film sits on top of the fibre rather than inside it, repulping separates it mechanically instead of chemically. Compare that with cold foil printing, which transfers a similar micron-scale layer with a UV adhesive, and with metallised board, where a continuous aluminium layer covers the whole sheet and can move the pack out of the paper stream entirely. For the press side of low-waste decoration see the foil stamping machine guide and the dies & tooling guide, where correct make-ready is what stops re-runs — the largest single source of waste in foil decoration.
How a foiled carton is recycled — 5-step sequence
Collection & sorting
Foiled cartons are collected in the paper stream. Spot-foiled board sorts as board because the substrate is unchanged over 90%+ of its area.
Repulping
Warm water and surfactants disperse the fibres in 15–30 minutes. The foil layer releases as flakes because it was never bonded into the fibre matrix.
Coarse & fine screening
Slotted screens remove the stiff metallic flakes. Foil flakes are larger than ink particles, so screening efficiency is typically high.
Flotation de-inking
Air bubbles carry residual pigment and metallic particles to the froth layer. Results are scored by residual dirt speck area under INGEDE Method 11.
Grading & documentation
The recovered pulp is graded for brightness and dirt count. Keep the test report with the artwork so the same combination can be re-declared on reprints.
Decoration methods compared — recyclability impact
Assessed for folding carton and label board in the European paper stream.
| Method | Added Material | Typical Coverage | Paper-Stream Outcome |
|---|---|---|---|
| Hot stamping (spot) | 0.5–1.5 µm transfer layer | 2–8% of sheet | Recyclable — flakes removed in screening/flotation |
| Cold foil (spot, inline) | 0.5–1.2 µm + UV adhesive | 3–15% of sheet | Recyclable at normal coverage; test above 30% |
| Metallised board | Continuous vacuum-metallised layer | 100% of sheet | Often rejected or downgraded by mills |
| Metallised PET laminate | 12–19 µm bonded plastic film | 100% of sheet | Non-repulpable — treated as a composite |
| Metallic ink | 1.5–4 g/m² pigment ink film | 5–30% of sheet | Recyclable, but heavier dirt-speck load than foil |
Sustainability specification checklist
| Parameter | Standard Packaging Grade | Audited Brand Grade |
|---|---|---|
| PET carrier thickness | 16–19 µm | 12 µm (25–35% less spent film) |
| Transfer layer thickness | 0.8–1.5 µm | 0.5–1.0 µm |
| Added weight per carton | < 0.3% | < 0.2% |
| PFAS | No intentionally added PFAS | Declaration on file per batch |
| Heavy metals (Pb+Cd+Hg+Cr VI) | < 100 ppm (EU 94/62/EC) | < 100 ppm + test report |
| REACH SVHC | Screened | Screened + statement |
| EN 71-3 (toy packaging) | On request | Included |
| De-inkability data | Generic report | INGEDE 11 on your artwork |
| Repulpability data | On request | PTS-RH 021 on your board |
| Carrier take-back guidance | Included | Included + collection spec |
Where sustainable foil specification matters most
Replace metallised board with spot foil to keep the carton in the paper stream while holding the same shelf impact.
Food-contact-safe grades with declarations of compliance, kept off glue seams so the carton repulps predictably.
Spot foil on wet-strength label stock; coverage under 30% keeps de-inkability scores in the acceptable band.
Heavy-metal and REACH documentation supplied per batch for regulated supply-chain audits.
UK and EU modulated-fee schemes reward recyclable formats — spot foil documentation supports the higher grading.
EN 71-3 migration compliance included with the audited brand grade for safety-critical categories.
Technical Specifications FAQ
Q01Is hot stamping foil recyclable?+
The stamped decoration itself is not a recyclable material, but foiled paper and board are recyclable. The transferred layer is 0.5–1.5 µm thick and typically adds less than 0.2% to the weight of a folding carton, so it is removed with the rejects in the pulper and flotation de-inking stage. European de-inkability testing (INGEDE Method 11) and repulpability testing (PTS-RH 021) routinely pass hot-stamped board that carries normal coverage.
Q02How does the de-inking process remove foil?+
Foiled board is repulped in warm water with surfactants. The paper fibres disperse while the aluminium/pigment layer and the polymer release and adhesive layers stay as discrete flakes because they never bond into the fibre. Screening and flotation then skim those flakes off with the ink and coating rejects. Because foil flakes are larger and stiffer than ink particles they are actually easier to screen out than heavy solid-ink coverage.
Q03Is foil stamping more sustainable than metallised board or laminate?+
Usually yes. Metallised laminate and metallised board carry a continuous plastic or aluminium layer across the whole sheet, which can push the pack out of the paper recycling stream. Hot stamping applies metal only where the design needs it — commonly 2–8% of the sheet area — leaving the rest as plain recyclable board, with no solvent, no water use and no drying oven in the decoration step.
Q04What happens to the PET carrier film after stamping?+
The 12–19 µm PET carrier stays on the roll core as spent film and never enters the pack. Collected spent carrier is a clean, single-polymer PET stream that can be sold to film recyclers rather than landfilled. We supply take-back guidance and can quote 12 µm carriers, which cut spent-film mass roughly 25–35% versus a 19 µm carrier at the same run length.
Q05Are there PFAS-free and heavy-metal-free foil grades?+
Yes. Our packaging grades are supplied free of intentionally added PFAS and comply with EU Packaging Directive 94/62/EC heavy-metal limits (sum of Pb, Cd, Hg, Cr VI below 100 ppm), plus REACH SVHC screening and EN 71-3 for toy and children's packaging. Food-contact-safe grades with declarations of compliance are available for secondary and direct-contact packaging.
Q06Does foil coverage affect recyclability grading?+
It can at high coverage. Most de-inkability protocols score results by residual dirt speck area, so a full-flood metallic panel behaves differently to a stamped logo. Keep coverage below roughly 30% of the surface, avoid stamping over the full glue seam area, and request a de-inkability test on your actual artwork if the pack must be graded for a national recyclability scheme such as CEFLEX, 4evergreen or a UK EPR modulated fee.
Q07How do I document foil sustainability for a brand audit?+
Ask your supplier for four documents: a material safety data sheet, an EU 94/62/EC heavy-metal and PFAS declaration, a de-inkability or repulpability test report on foiled board, and the carrier film specification with take-back guidance. We supply all four with every packaging-grade order so your brand owner's packaging audit can be closed without a lab retest.
Q08Can you supply sample foiled board for a recyclability test?+
Yes. Send your board grade and artwork coverage and we ship stamped A4 test sheets in your chosen foil, free to qualified buyers, so your recycler or test house can run INGEDE 11 or PTS-RH 021 on the exact combination you intend to produce.
Free stamped test sheets for your recyclability audit
Send us your board grade, artwork coverage and target market — we'll ship stamped A4 test sheets plus the PFAS, heavy-metal and de-inkability documentation your brand-owner audit needs.