Technical Guide · 2026 Edition
Transparent Foil — Clear & Transparent Holographic Hot Stamping Foil
Transparent foil — also called clear hot stamping foil or transparent overlay foil — is a hot-stamping foil whose opaque colour layer is replaced by a clear optical coat (with optional ultra-thin metallisation + holographic embossing), so the substrate stays fully visible through the stamped area while the foil adds gloss, matte, rainbow holographic or anti-counterfeit security effects on top. This guide covers the 6 stock variants — led by transparent holographic foil — plus optical specs, press settings, security patterns and MOQ-from-1-roll sourcing.
Reviewed by Gavin Gao, Technical Director
What is transparent foil?
Transparent foil (also: clear foil, clear hot stamping foil, transparent overlay foil) is a hot stamping foil whose opaque colour pigment is removed and whose aluminium layer is either omitted or reduced to ~10 nm — thin enough to stay 60–80% optically transmissive while still carrying a holographic diffraction pattern. The result: the underlying CMYK print, photograph, brand colour or hot-stamped metallic remains fully visible, with the foil contributing gloss, matte, rainbow or anti-counterfeit security effects on top. The dominant sub-variant — transparent holographic foil — is the standard finish for premium packaging accents over full-colour artwork, security overlays on certificates and ID cards, and layered combination stamping (gold base + transparent rainbow on top). Browse the matching Holographic Hot Stamping Foil range or read the Holographic Foil guide for the full 6-pattern catalogue. Compare against matte foil, brushed foil or fluorescent foil for opaque metallic effects.
How transparent holographic foil is made — 5-step production sequence
PET carrier coating
12–25 µm PET film is coated with a release wax and a clear (un-pigmented) optical lacquer that will form the visible stamped layer.
Ultra-thin metallisation
A ~10 nm aluminium layer (vs ~50 nm on opaque foil) is vacuum-deposited — enough to carry the holographic pattern, thin enough to stay 60–80% optically transmissive.
Holographic embossing
A precision-engraved roller carrying the holographic master (rainbow, pillar-of-light, dot-matrix or custom logo) hot-presses the diffraction pattern into the clear lacquer + thin aluminium at 110–140 °C.
Heat-activated adhesive
A clear heat-activated adhesive is back-coated so the foil bonds cleanly to the substrate during stamping without yellowing the optical layer.
Slitting & optical QC
Master rolls are slit to customer widths (200–1,600 mm) and 100% inspected for pinholes, optical transmission (60–80%), pattern registration, and ΔE drift on the underlying substrate after stamping.
6 transparent foil variants — pick by visual brief
4 stock variants ship from 1 roll. Security and custom-logo variants require tooling lead time.
| Variant | Aluminium Layer | Optical Effect | Best For |
|---|---|---|---|
| Clear Gloss | None | Glossy clear overprint, no rainbow | Spot-varnish-style highlights, overprint protection |
| Clear Matt | None | Matt clear layer (gloss 5–15 GU) | Anti-glare overlays, premium understated finishes |
| Clear Holographic Rainbow | ~10 nm | Full-spectrum rainbow diffraction over substrate | Premium cosmetics, gift packaging, trading cards |
| Clear Pillar-of-Light | ~10 nm | Vertical light columns, signature luxury effect | Premium spirits, fragrance, luxury chocolates |
| Clear Dot-Matrix / Security | ~10 nm | Banknote-grade anti-counterfeit micro-pattern | Certificates, ID cards, pharma security labels |
| Custom-Logo Holographic | ~10 nm | Your logo embossed into the diffraction master | Brand-secured packaging, official seals (1,000 m² MOQ) |
Transparent vs opaque holographic foil — decision matrix
| Parameter | Transparent Holographic | Opaque Holographic |
|---|---|---|
| Aluminium layer | ~10 nm (ultra-thin) | ~50 nm (full) |
| Optical transmission | 60–80% (substrate visible) | 0% (substrate hidden) |
| Underlying print visible after stamping | Yes — full CMYK / photo / metallic | No — foil is the decoration |
| Best for | Overlays on full-colour artwork, security strips, combination stamping | Solid logos, full holographic backgrounds, scratch-off panels |
| Rainbow intensity | Medium (depends on substrate) | High (substrate-independent) |
| Press settings | 110–125 °C, 5–8 bar | 115–140 °C, 8–12 bar |
| Typical end-use | Premium cosmetics, certificates, ID cards, trading cards | Logos, gift wrap, security seals, novelty packaging |
Transparent foil — technical specifications
| Parameter | Clear Gloss / Matt | Clear Holographic | Security Grade |
|---|---|---|---|
| PET carrier thickness | 12 µm | 16 µm | 19–25 µm |
| Aluminium layer | None | ~10 nm | ~10 nm + barrier |
| Optical transmission | ≥ 90% | 60–80% | 60–70% |
| Holographic pattern | — | Rainbow / pillar-of-light | Dot-matrix / custom logo |
| Roll width | 200–1,300 mm | 200–1,600 mm | 200–1,200 mm |
| Roll length | 120 / 300 / 600 m | 120 / 300 / 600 m | 120 / 300 m |
| Stamping temp. | 105–120 °C | 110–125 °C | 115–130 °C |
| Nip pressure | 5–7 bar | 5–8 bar | 6–9 bar |
| Lightfastness (Blue Wool) | 5–6 | 5–6 | 6–7 |
| MOQ | 1 roll (stock) | 1 roll (stock patterns) | 500 m² (security) / 1,000 m² (custom) |
Where transparent and transparent holographic foil are used
Rainbow holographic accents stamped over full-colour CMYK photography on skincare and perfume cartons — the underlying photo stays visible, the foil adds shimmer.
Anti-counterfeit transparent holographic overlays stamped across signatures, photos and printed text — security pattern visible without obscuring the document content.
Clear pillar-of-light foil over hot-stamped gold or silver bases — multi-layer combination stamping that delivers a premium luxury effect impossible with opaque foil alone.
Transparent rainbow foil over full-colour character artwork — the signature finish on rare and ultra-rare trading-card variants.
Clear dot-matrix / security holographic strips on Rx cartons, vaccine packs and medical-device boxes — banknote-grade anti-counterfeit without hiding the dosage information.
Custom-logo transparent holographic strips on banknotes, passports and tax stamps — your logo embossed into the diffraction master at 1,000 m² MOQ.
Technical Specifications FAQ
Q01What is transparent foil?+
Transparent foil — also called clear foil, clear hot stamping foil or transparent overlay foil — is a hot-stamping foil whose colour-lacquer + metallised aluminium layers are replaced by a clear (or partially metallised) optical lacquer. After stamping, the underlying substrate stays fully visible through the deposited layer, while the foil itself adds a glossy, matte, holographic-rainbow, or security-pattern optical effect on top. Construction is the same as standard foil — 12–25 µm PET carrier + release wax + clear optical coat (+ optional embossed holographic pattern) + heat-activated adhesive — minus the opaque colour pigment and minus (or with a much thinner) aluminium layer.
Q02Transparent foil vs transparent holographic foil — what's the difference?+
Transparent foil is the umbrella term; transparent holographic foil is its highest-volume sub-variant. (1) Plain transparent foil — a clear lacquer-only layer that adds a glossy or matte sheen over the substrate, used for spot-varnish-style highlights and overprint protection. (2) Transparent holographic foil (also: clear holographic foil, transparent rainbow foil) — a clear lacquer + ultra-thin (~10 nm) partially metallised aluminium embossed with a holographic master, so the substrate is still readable through it while the foil casts a rainbow / pillar-of-light / security pattern. We stock both; the holographic variant accounts for ~80% of transparent foil B2B orders.
Q03Transparent holographic foil vs opaque holographic foil — when to use which?+
Use transparent holographic foil when you need the rainbow / security effect AND the underlying CMYK print, photograph, brand colour or hot-stamped gold/silver must remain visible — typical for premium packaging where holographic accents sit on top of full-colour artwork, for anti-counterfeit overlays on certificates and banknotes, and for layered combination stamping (gold base + transparent rainbow on top). Use opaque holographic foil when the foil itself is the decoration and the substrate underneath does not need to show — typical for solid logos, full holographic backgrounds, scratch-off panels.
Q04How is transparent holographic foil made?+
Five steps. (1) 12–25 µm PET carrier coated with release wax and a clear optical lacquer. (2) Ultra-thin aluminium (~10 nm, vs ~50 nm on opaque foil) is vacuum-deposited — enough to carry the holographic diffraction pattern but thin enough to stay 60–80% optically transmissive. (3) An embossing roller carrying the holographic master (rainbow, pillar-of-light, dot-matrix, custom logo) hot-presses the diffraction pattern into the lacquer + aluminium at 110–140 °C. (4) Heat-activated adhesive is back-coated. (5) Slit to customer width (200–1,600 mm) and 100% inspected for pinholes, optical transmission (target 60–80%) and pattern registration.
Q05How to stamp transparent / clear holographic foil cleanly?+
Three rules. (1) Lower nip pressure than opaque foil — 5–8 bar instead of 8–12 bar — because the thinner aluminium tears under standard pressure. (2) Use a polished magnesium or brass die at 110–125 °C (slightly cooler than opaque foil); overheating burns the clear lacquer and yellows it. (3) Always test on the exact production substrate first — the substrate colour and ink coverage underneath determine the perceived rainbow intensity. Run on any sheetfed stamping press; see our foil stamping machine guide for press selection.
Q06What patterns and variants are available?+
6 stock transparent variants. (1) Clear Gloss — no aluminium, glossy overprint layer. (2) Clear Matt — no aluminium, matt protective layer (gloss 5–15 GU). (3) Clear Holographic Rainbow — most-ordered, full spectrum diffraction. (4) Clear Pillar-of-Light — vertical light columns, premium packaging signature. (5) Clear Dot-Matrix / Security — anti-counterfeit, banknote-grade. (6) Clear Custom-Logo Holographic — your logo embossed into the diffraction pattern (1,000 m² MOQ + engraving fee, 35–45 days). All variants run at 200–1,600 mm widths; 4 stock patterns ship from 1 roll.
Q07What substrates and end-uses work best with transparent foil?+
Best on coated SBS / FBB 250–500 gsm, premium label paper, BOPP / PET / PVC films (0.05–0.8 mm), security paper, ID cards, and CMYK-printed cartons where preserving the underlying artwork is mandatory. Transparent holographic foil is the standard finish for: premium cosmetics and fragrance cartons (rainbow accents on full-colour photos), pharmaceutical security labels, certificate and diploma overlays, banknote and ID-card hologram strips, premium spirits gift boxes, trading cards, and luxury chocolate packaging. Pairs well with combination stamping over hot-stamped gold or silver for a multi-layer premium effect.
Q08What is the MOQ and lead time for transparent foil?+
4 stock transparent variants (clear gloss, clear matt, clear holographic rainbow, clear pillar-of-light): 1 roll (~640 mm × 120 m ≈ 77 m²), ship in 5–7 days FOB Shanghai. Clear dot-matrix / security: 500 m² MOQ, 12–15 days. Custom-logo holographic: 1,000 m² MOQ, 35–45 days plus one-time engraving tool fee (USD 800–2,500 depending on logo complexity and seal-impression size). Free A4 swatch packs covering all 4 stock patterns shipped within 5 business days to qualified buyers. Year-round safety stock kept on clear holographic rainbow in 640 mm and 1,040 mm widths.
Free transparent foil swatch pack
Tell us your substrate and end-use — we'll ship an A4 swatch pack of all 4 stock transparent variants (clear gloss, clear matt, clear holographic rainbow, pillar-of-light) within 5 business days, free to qualified buyers.