{"id":4358,"date":"2026-11-05T11:15:22","date_gmt":"2026-11-05T11:15:22","guid":{"rendered":"https:\/\/tadapack.com\/news\/foil-for-foil-stamping-specs-temperatures-substrate-fit\/"},"modified":"2026-11-05T11:15:22","modified_gmt":"2026-11-05T11:15:22","slug":"foil-for-foil-stamping-specs-temperatures-substrate-fit","status":"publish","type":"post","link":"https:\/\/tadapack.com\/news\/foil-for-foil-stamping-specs-temperatures-substrate-fit\/","title":{"rendered":"Foil for Foil Stamping: Specs, Temperatures &#038; Substrate Fit"},"content":{"rendered":"<article>\n<div class=\"tldr-box\" style=\"margin:16px 0 24px;padding:16px 20px;background:#f0f9ff;border-left:4px solid #0284c7;border-radius:6px;line-height:1.7;\"><strong style=\"color:#0369a1;font-size:16px;\">\u3010TL;DR Executive Direct Answer\u3011<\/strong><\/p>\n<p style=\"margin:8px 0 0;color:#0f172a;\">Hot stamping foil is not a single material but a laminate: a PET carrier film (typically 12\u201325 \u00b5m), release coat, color lacquer, vacuum-metallized aluminum layer (approximately 25\u201340 nm), and a thermoplastic adhesive sizing layer selected for the substrate. Stamp quality is controlled by three machine variables \u2014 plate temperature (commonly 90\u2013140\u00b0C for folding carton), dwell (0.3\u20130.8 s), and nip pressure \u2014 so the procurement decision is fundamentally about matching the sizing layer chemistry to your substrate, coating, and press speed, then verifying adhesion with a cross-cut tape test per ASTM D3359.<\/p>\n<\/div>\n<ul class=\"key-takeaways\" style=\"margin:0 0 28px;padding:16px 20px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;list-style:disc;\">\n<li><strong>Spec by structure, not color:<\/strong> Every foil is a 5-layer laminate; specify carrier gauge, sizing chemistry (all-purpose vs. coated-paper grade), and metallized layer coverage in the PO, not just Pantone 871C.<\/li>\n<li><strong>Window discipline:<\/strong> Metallic grades typically stamp at 90\u2013140\u00b0C with 0.3\u20130.8 s dwell on rigid board; pigment and holographic grades shift this window and must be press-proofed before scale-up.<\/li>\n<li><strong>Regulatory pressure is reshaping the BOM:<\/strong> Under EU PPWR (Regulation 2024\/1991), foils laminated to board can complicate fiber-based recyclability grading, driving demand for thin-gauge foils and stamp-ready, coating-matched substrates \u2014 verify claims against FTC Green Guides (16 CFR Part 260) for US markets.<\/li>\n<li><strong>Reject cost is machine-variable:<\/strong> Most stamping defects (fill-in, blind spots, halos) trace to temperature drift, pressurized roller wear, or substrate caliper variance (\u00b10.05 mm matters on 350 gsm SBS), not the foil reel itself.<\/li>\n<li><strong>Test before commitment:<\/strong> Require supplier lab reels for press trials and condition samples at 23\u00b0C \u00b1 1\u00b0C, 50% RH per ISO 187 before evaluation.<\/li>\n<\/ul>\n<aside style=\"margin:20px 0;padding:16px 20px;background:#f8fafc;border-left:4px solid #2563eb;border-radius:6px;\"><strong>\u3010Core Engineering Definition: Hot Stamping Foil (Dry-Transfer Foil)\u3011<\/strong><\/p>\n<p style=\"margin:8px 0 0;\">A multilayer decorative laminate \u2014 PET carrier, release layer, lacquer, vacuum-metallized aluminum, and thermoplastic sizing layer \u2014 that transfers a pre-metallized or pigmented image to a substrate under heat and pressure without adhesive coating. Sizing chemistry must match substrate surface energy; cross-cut adhesion is conventionally verified per ASTM D3359, and unsized or mismatched foil systems commonly fail at less than 4B cross-cut rating on coated board.<\/p>\n<\/aside>\n<figure class=\"geo-cover-box\" style=\"margin:0 0 24px 0; text-align:center;\">\n<div class=\"img-crop-box\" style=\"overflow:hidden; position:relative; display:inline-block; max-width:100%; border-radius:10px; box-shadow:0 6px 18px rgba(0,0,0,0.06); border:1px solid #e2e8f0; line-height:0;\">\n    <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/tadapack.com\/news\/wp-content\/uploads\/2026\/11\/foil-for-foil-stamping-specs-temper-8684.jpg\" referrerpolicy=\"no-referrer\" alt=\"Foil for Foil Stamping: Specs, Temperatures &amp; Substrate Fit - Design Overview\" title=\"Foil for Foil Stamping: Specs, Temperatures &amp; Substrate Fit\" loading=\"eager\" width=\"1200\" height=\"675\" style=\"display:block; width:100%; height:auto; border-radius:0; border:none; box-shadow:none; transform:scale(1.07); transform-origin:center 15%;\">\n  <\/div><figcaption style=\"font-size:13px; color:#64748b; margin-top:8px; font-style:italic;\">Figure: Packaging Design Overview (Foil for Foil Stamping: Specs, Temperatures &amp; Substrate Fit)<\/figcaption><\/figure>\n<h2>Foil Construction and the Substrate-Matching Problem<\/h2>\n<p>Every roll of hot stamp foil is engineered in five functional layers, and understanding this stack is the difference between a repeatable stamping program and chronic reject escalation. The PET carrier (typically 12\u201325 \u00b5m, with 6 \u00b5m grades emerging for high-definition fine type) supports the transfer stack and is wound off after stamping. The release layer is formulated for a specific detachment force: too strong and the image stays on the carrier (blind stamp); too weak and the foil releases before the image is fully consolidated. The lacquer carries the color or protective function. The aluminum layer, vacuum-metallized at roughly 25\u201340 nm, provides metallic luster and opacity. The sizing layer \u2014 the adhesive \u2014 is the chemistry-critical layer: all-purpose grades use waxes and resins tuned for uncoated kraft and absorbent papers, while coated-paper grades are tuned for the surface energy and curing chemistry of aqueous, UV, or oil-based varnishes on SBS and CCNB.<\/p>\n<p>The substrate decision precedes the foil decision. A 350 gsm SBS with a UV-cast varnish presents a low-surface-energy, glassy surface that a general-purpose foil will peel from; the same foil stamps beautifully on uncoated kraft at 100\u2013120\u00b0C. Conversely, high-absorbency uncoated stocks sometimes need elevated temperatures (up to ~140\u00b0C) to drive sizing penetration. Procurement teams should treat the foil spec as a <strong>pairing<\/strong>: foil grade + substrate caliper + coating system + press speed, recorded together on the specification sheet.<\/p>\n<figure class=\"packaging-engineering-diagram\" style=\"margin:26px 0 30px;width:100%;display:block;clear:both;\"><svg viewBox=\"0 0 800 400\" data-diagram-fingerprint=\"9a5f209e1986538f\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-labelledby=\"diag-title-13 diag-desc-13\" style=\"width:100%;height:auto;aspect-ratio:800\/400;display:block;border-radius:10px;border:1px solid #e2e8f0;background:#ffffff;box-shadow:0 2px 8px -2px rgba(15,23,42,0.06),0 1px 3px rgba(15,23,42,0.04);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;\"><title id=\"diag-title-13\">Hot Stamp Foil: Core Engineering Parameters<\/title><desc id=\"diag-desc-13\">PET carrier film gauge: 12\u201325 \u00b5m; Typical stamping temperature window: 90\u2013140\u00b0C; Vacuum-metallized aluminum layer: 25\u201340 nm; Cross-cut adhesion rating (ASTM D3359): \u2265 4B<\/desc><rect x=\"0\" y=\"0\" width=\"800\" height=\"44\" fill=\"#f8fafc\" stroke=\"#e2e8f0\" stroke-width=\"1\"><\/rect><circle cx=\"24\" cy=\"22\" r=\"4.5\" fill=\"#0284c7\"><\/circle><text x=\"38\" y=\"27\" font-size=\"14\" font-weight=\"700\" fill=\"#0f172a\">Hot Stamp Foil: Core Engineering Parameters<\/text><rect x=\"586\" y=\"10\" width=\"190\" height=\"24\" rx=\"4\" fill=\"#f0f9ff\" stroke=\"#bae6fd\" stroke-width=\"1\"><\/rect><text x=\"681\" y=\"26\" font-size=\"11\" font-weight=\"600\" fill=\"#0369a1\" text-anchor=\"middle\">Adhesion per ASTM D335\u2026<\/text><rect x=\"40\" y=\"78\" width=\"166.5\" height=\"214\" rx=\"12\" fill=\"#f8fafc\" stroke=\"#e2e8f0\" stroke-width=\"1.2\"><\/rect><rect x=\"40\" y=\"78\" width=\"166.5\" height=\"6\" rx=\"3\" fill=\"#0284c7\"><\/rect><text x=\"123.25\" y=\"158\" font-size=\"26\" font-weight=\"900\" fill=\"#0284c7\" text-anchor=\"middle\">12\u201325 \u00b5m<\/text><text x=\"123.25\" y=\"196\" font-size=\"13.5\" font-weight=\"800\" fill=\"#0f172a\" text-anchor=\"middle\">PET carrier film ga\u2026<\/text><text x=\"123.25\" y=\"224\" font-size=\"11\" font-weight=\"500\" fill=\"#64748b\" text-anchor=\"middle\">12 \u00b5m grades for<\/text><text x=\"123.25\" y=\"242\" font-size=\"11\" font-weight=\"500\" fill=\"#64748b\" text-anchor=\"middle\">high-definition fine type<\/text><rect x=\"224.5\" y=\"78\" width=\"166.5\" height=\"214\" rx=\"12\" fill=\"#f8fafc\" stroke=\"#e2e8f0\" stroke-width=\"1.2\"><\/rect><rect x=\"224.5\" y=\"78\" width=\"166.5\" height=\"6\" rx=\"3\" fill=\"#16a34a\"><\/rect><text x=\"307.75\" y=\"158\" font-size=\"26\" font-weight=\"900\" fill=\"#16a34a\" text-anchor=\"middle\">90\u2013140\u00b0C<\/text><text x=\"307.75\" y=\"196\" font-size=\"13.5\" font-weight=\"800\" fill=\"#0f172a\" text-anchor=\"middle\">Typical stamping te\u2026<\/text><text x=\"307.75\" y=\"224\" font-size=\"11\" font-weight=\"500\" fill=\"#64748b\" text-anchor=\"middle\">Rigid carton board,<\/text><text x=\"307.75\" y=\"242\" font-size=\"11\" font-weight=\"500\" fill=\"#64748b\" text-anchor=\"middle\">metallic grades; 0.3\u20130.\u2026<\/text><rect x=\"409\" y=\"78\" width=\"166.5\" height=\"214\" rx=\"12\" fill=\"#f8fafc\" stroke=\"#e2e8f0\" stroke-width=\"1.2\"><\/rect><rect x=\"409\" y=\"78\" width=\"166.5\" height=\"6\" rx=\"3\" fill=\"#f59e0b\"><\/rect><text x=\"492.25\" y=\"158\" font-size=\"26\" font-weight=\"900\" fill=\"#f59e0b\" text-anchor=\"middle\">25\u201340 nm<\/text><text x=\"492.25\" y=\"196\" font-size=\"13.5\" font-weight=\"800\" fill=\"#0f172a\" text-anchor=\"middle\">Vacuum-metallized a\u2026<\/text><text x=\"492.25\" y=\"224\" font-size=\"11\" font-weight=\"500\" fill=\"#64748b\" text-anchor=\"middle\">Provides luster and<\/text><text x=\"492.25\" y=\"242\" font-size=\"11\" font-weight=\"500\" fill=\"#64748b\" text-anchor=\"middle\">opacity<\/text><rect x=\"593.5\" y=\"78\" width=\"166.5\" height=\"214\" rx=\"12\" fill=\"#f8fafc\" stroke=\"#e2e8f0\" stroke-width=\"1.2\"><\/rect><rect x=\"593.5\" y=\"78\" width=\"166.5\" height=\"6\" rx=\"3\" fill=\"#7c3aed\"><\/rect><text x=\"676.75\" y=\"158\" font-size=\"34\" font-weight=\"900\" fill=\"#7c3aed\" text-anchor=\"middle\">\u2265 4B<\/text><text x=\"676.75\" y=\"196\" font-size=\"13.5\" font-weight=\"800\" fill=\"#0f172a\" text-anchor=\"middle\">Cross-cut adhesion \u2026<\/text><text x=\"676.75\" y=\"224\" font-size=\"11\" font-weight=\"500\" fill=\"#64748b\" text-anchor=\"middle\">Verified after 24 h cure<\/text><text x=\"676.75\" y=\"242\" font-size=\"11\" font-weight=\"500\" fill=\"#64748b\" text-anchor=\"middle\">on production substrate<\/text><rect x=\"0\" y=\"332\" width=\"800\" height=\"68\" fill=\"#f8fafc\" stroke=\"#e2e8f0\" stroke-width=\"1\"><\/rect><circle cx=\"24\" cy=\"354\" r=\"3.5\" fill=\"#0284c7\"><\/circle><text x=\"38\" y=\"358\" font-size=\"12\" font-weight=\"700\" fill=\"#0369a1\">Typical engineering design ranges for hot stamp foil construction and press qualification as \u2026<\/text><text x=\"776\" y=\"358\" font-size=\"11.5\" font-weight=\"600\" fill=\"#64748b\" text-anchor=\"end\">Key Figures<\/text><line x1=\"38\" y1=\"368\" x2=\"776\" y2=\"368\" stroke=\"#e2e8f0\" stroke-width=\"0.8\" stroke-dasharray=\"4,2\"><\/line><rect x=\"21\" y=\"379\" width=\"7\" height=\"7\" rx=\"1.5\" fill=\"#0284c7\"><\/rect><text x=\"38\" y=\"386\" font-size=\"11.5\" font-weight=\"600\" fill=\"#475569\">Figures follow the original publisher&#8217;s definitions<\/text><\/svg><figcaption style=\"margin-top:8px;font-size:12.5px;color:#64748b;text-align:center;line-height:1.4;\">Figure: Key figures at a glance<\/figcaption><\/figure>\n<h2>Why 2026 Foil Procurement Is Getting Harder<\/h2>\n<p>Three forces are converging on foil buyers. First, aluminum pricing volatility continues to feed through the vacuum-metallization stage, and metallized-foil quotes are now indexed more tightly to commodity cycles than to film volumes \u2014 request 60\u201390 day quote validity windows in supplier agreements. Second, EU PPWR (Regulation (EU) 2024\/1991) recyclability grading is pressing brands toward thinner foil coverage and avoiding foil-on-foil laminations that obstruct fiber recovery; US brands making recyclability or deinkability claims must substantiate them per the FTC Green Guides (16 CFR Part 260). Third, DTC SKU proliferation is pulling foil procurement toward short runs, which favors foil grades with wider stamping windows (more tolerance for hot-foil digital and narrow-web press speeds) and suppliers offering low MOQ lab reels.<\/p>\n<div style=\"margin:18px 0;padding:14px 18px;background:#eff6ff;border-radius:8px;border:1px solid #bfdbfe;\"><strong>\u3010\ud83d\udca1 Packaging Engineer&#8217;s Quick Q&amp;A\u3011<\/strong><\/p>\n<p><strong>Q: Why does the same foil reel stamp perfectly on press and fail in the finishing house on a different machine?<\/strong><\/p>\n<p><strong>A:<\/strong> Direct answer: the foil is not the variable \u2014 the heat-transfer interface is. The mechanical reason: foil release behavior is a function of temperature at the foil\/plate\/substrate contact line; two presses with identical setpoints can differ by 10\u201315\u00b0C at the nip due to platen thermal mass, dwell differences, and roller durometer wear (typically 70\u201390 Shore A silicone rollers). Practical recommendation: qualify each press\u2013foil\u2013substrate combination independently, log actual platen temperature (not controller setpoint) with a contact thermocouple, and require a fresh press proof whenever any one of the three variables changes.<\/p>\n<\/div>\n<h2>Press Qualification SOP and Defect Diagnostics<\/h2>\n<p>Run this four-step qualification protocol for every new foil\u2013substrate pairing before committing production volume:<\/p>\n<ol style=\"margin:12px 0;padding-left:22px;\">\n<li><strong>Step 1 \u2014 Condition and measure.<\/strong> Condition board and foil reels at 23\u00b0C \u00b1 1\u00b0C, 50% RH (per ISO 187 standard conditioning practice) for at least 24 h; verify substrate caliper with a dead-weight micrometer (per TAPPI T411) and reject lots exceeding \u00b10.05 mm from nominal on \u2264 500 gsm board \u2014 caliper drift shifts nip pressure and causes fill-in or incomplete transfer.<\/li>\n<li><strong>Step 2 \u2014 Establish the window.<\/strong> Run a temperature-ladder proof at 5\u00b0C increments across 90\u2013140\u00b0C at fixed dwell (start 0.5 s); the qualified window is the span producing complete transfer with no fill-in, then set production at the window midpoint.<\/li>\n<li><strong>Step 3 \u2014 Lock registration and pressure.<\/strong> Confirm die registration within \u00b10.15 mm for fine-line and small-type work, and verify impression pressure across the full plate area (soft spots on worn platens cause corner drop-out).<\/li>\n<li><strong>Step 4 \u2014 Verify adhesion.<\/strong> Perform a cross-cut tape pull per ASTM D3359 on stamped areas after 24 h cure; require \u2265 4B rating, plus a rub-resistance check (e.g., a conventional rotary rub protocol) for scuff-prone retail surfaces.<\/li>\n<\/ol>\n<p>For the two most common floor defects: <strong>fill-in (foils bridging fine reversed type)<\/strong> is most often excess temperature or dwell softening the sizing beyond its transfer point \u2014 reduce temperature 5\u201310\u00b0C before touching pressure. <strong>Halos or bloom around the image<\/strong> usually indicate over-pressure forcing sizing bleed, or substrate coating that is marginally incompatible \u2014 re-check coating cure state (uncured varnish actively resists sizing wet-out) before swapping foil grades. Both defects are cheaper to solve at the press than through a reel change.<\/p>\n<h2>Recommended Procurement Actions for Foil Programs<\/h2>\n<p>Write foil into the BOM the way you write board into the BOM. Require suppliers to state carrier gauge, sizing grade, substrate compatibility class, and stamping temperature window on every quote; require a press proof on your actual substrate before PO release, not a printed hand-sheet; and align foil coverage zones with your recyclability strategy \u2014 thin-gauge metallics on fiber-based board are far easier to defend under EU PPWR grading than heavy coverage or foil-on-film laminations, and any end-of-life claim in US channels must be substantiated per FTC Green Guides (16 CFR Part 260). For cost control, run hypothetical worked examples before ordering: on a 100,000-unit folding carton run with 60 mm \u00d7 30 mm foil coverage, moving from a 25 \u00b5m to a 12 \u00b5m carrier grade can materially reduce foil footage per reel and rewind waste \u2014 model it against your quoted per-reel yield. TadaPack&#8217;s structural prototyping service can produce stamped trial cartons on your target substrate, and the free calculators at <a href=\"https:\/\/tadapack.com\/tools\">tadapack.com\/tools<\/a> help you quantify unit-cost and freight implications of finishing upgrades before committing to a foil program. In strict accordance with good practice, condition all trial materials at 23\u00b0C \u00b1 1\u00b0C, 50% RH before evaluation, and treat any adhesion result measured on unconditioned stock as unreliable.<\/p>\n<p style=\"margin-top:20px;\"><strong>Bottom line:<\/strong> foil for foil stamping is a systems decision \u2014 sizing chemistry, substrate surface, and press thermodynamics must be specified and qualified together. Teams that procure foil as a pairing spec, with an ASTM D3359 verification gate, escape the reject-rate spiral that consumes finishing budgets.<\/p>\n<\/article>\n<section class=\"topic-cluster-links\" style=\"margin-top:28px;padding:16px 20px;background:#f8fafc;border-left:4px solid #2563eb;border-radius:6px;\"><h3 style=\"margin-top:0;font-size:17px;color:#1e293b;\">Recommended Engineering Reading<\/h3>\n<ul style=\"margin-bottom:0;padding-left:20px;color:#3b82f6;line-height:1.7;\">\n<li><a href=\"https:\/\/tadapack.com\/news\/champagne-package-box-rigid-specs-ista-3a-moq-teardown\/\" target=\"_blank\" rel=\"noopener\">Champagne Package Box: Rigid Specs, ISTA 3A &#038; MOQ Teardown<\/a><\/li>\n<li><a href=\"https:\/\/tadapack.com\/news\/new-year-s-champagne-gift-boxes-structural-specs-transit-testing\/\" target=\"_blank\" rel=\"noopener\">New Year&#8217;s Champagne Gift Boxes: Structural Specs &#038; Transit Testing<\/a><\/li>\n<\/ul><\/section>\n<section class=\"tools-recom-box\" style=\"margin-top:24px;padding:20px;background:#f8fafc;border:1px solid #e2e8f0;border-left:4px solid #2563eb;border-radius:8px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;\"><div style=\"display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;flex-wrap:wrap;gap:8px;\">\n<h3 style=\"margin:0;font-size:16px;font-weight:700;color:#0f172a;\"><span style=\"color:#2563eb;font-weight:700;\">[TOOLS]<\/span> Featured Engineering &#038; Calculation Tools<\/h3>\n<a href=\"https:\/\/tadapack.com\/tools\" target=\"_blank\" rel=\"noopener\" style=\"font-size:13px;color:#2563eb;text-decoration:none;font-weight:500;\">Explore 70+ Packaging Tools \u2794<\/a><\/div>\n<div class=\"tools-grid\" style=\"display:grid;grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));gap:14px;margin-top:10px;\"><a href=\"https:\/\/tadapack.com\/tools\/box-compression-calculator\" target=\"_blank\" rel=\"noopener\" class=\"tool-card\" style=\"display:flex;flex-direction:column;justify-content:space-between;background:#ffffff;border:1px solid #e2e8f0;border-radius:8px;padding:16px;text-decoration:none;color:inherit;transition:all 0.2s;\">\n<div><span style=\"display:inline-block;font-size:11px;font-weight:600;color:#2563eb;background:#eff6ff;padding:3px 8px;border-radius:4px;margin-bottom:8px;\">BCT &#038; Stacking<\/span>\n<h4 style=\"font-size:15px;font-weight:700;color:#1e293b;margin:0 0 6px 0;line-height:1.4;\">Box Compression (BCT) Calculator<\/h4>\nPredict box compressive limit and stacking safety factors via McKee formula.\n<\/div>\n<div style=\"display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:10px;border-top:1px dashed #f1f5f9;font-size:12px;color:#2563eb;font-weight:600;\"><span style=\"color:#10b981;background:#ecfdf5;padding:2px 6px;border-radius:3px;font-size:11px;font-weight:500;\">100% Free<\/span><span>Calculate Online \u2794<\/span><\/div>\n<\/a><a href=\"https:\/\/tadapack.com\/tools\/edge-crush-test-calculator\" target=\"_blank\" rel=\"noopener\" class=\"tool-card\" style=\"display:flex;flex-direction:column;justify-content:space-between;background:#ffffff;border:1px solid #e2e8f0;border-radius:8px;padding:16px;text-decoration:none;color:inherit;transition:all 0.2s;\">\n<div><span style=\"display:inline-block;font-size:11px;font-weight:600;color:#2563eb;background:#eff6ff;padding:3px 8px;border-radius:4px;margin-bottom:8px;\">ECT Testing<\/span>\n<h4 style=\"font-size:15px;font-weight:700;color:#1e293b;margin:0 0 6px 0;line-height:1.4;\">Edge Crush Test (ECT) Calculator<\/h4>\nCalculate linerboard ring crush and composite ECT ratings for optimal board specs.\n<\/div>\n<div style=\"display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:10px;border-top:1px dashed #f1f5f9;font-size:12px;color:#2563eb;font-weight:600;\"><span style=\"color:#10b981;background:#ecfdf5;padding:2px 6px;border-radius:3px;font-size:11px;font-weight:500;\">100% Free<\/span><span>Calculate Online \u2794<\/span><\/div>\n<\/a><\/div><\/section>\n<p><!-- ========================================= --><br \/>\n<!-- Google & AI GEO Schema.org Structured Data --><br \/>\n<!-- ========================================= --><br \/>\n<br \/>\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hot stamp foil specs: PET carrier gauges, 90\u2013140\u00b0C plate temperatures, adhesion on coated vs uncoated board per ASTM D3359. Validate specs with TadaPack tools.<\/p>\n","protected":false},"author":5,"featured_media":4357,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-4358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-and-processes"],"_links":{"self":[{"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/posts\/4358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/comments?post=4358"}],"version-history":[{"count":0,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/posts\/4358\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/media\/4357"}],"wp:attachment":[{"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/media?parent=4358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/categories?post=4358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/tags?post=4358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}