SOF 50000 is a high-gloss, fast-drying protective gravure overprint varnish formulated with ester and alcohol solvents, sealing printed paperboard with a smooth, scuff-resistant protective barrier.
| TARGET SUBSTRATES | Paperboard & Coated Paper · Transfer Metallized Paper (Coated paperboard, metallized cardboard, synthetic film, folding cartons & foil) |
|---|---|
| PRINT PROCESSES & SPEED | Gravure / Rotogravure (Inline sheet-fed offset up to 16,000 sph, rotogravure up to 350 m/min, flexo & screen) |
| INK & COATING CHEMISTRY | Eco-friendly ester/alcohol soluble resin system, benzene/ketone-free, superior transfer & adhesion |
| SURFACE FINISH PORTFOLIO | Ester/Alcohol-Soluble Gravure Gloss Varnish |
| HYGIENE & COMPLIANCE | Tobacco packaging YC/T 207 & GB/T 23985, Food contact FDA 21 CFR & GB 4806, RoHS, China Ten-Ring Labelling |
| PACKAGING & STORAGE | 20 kg sealed pails / 200 kg drums; shelf life 12 months in sealed original containers (5–35 °C) |
| Grade / Code | Product Name & Application Scope | Method / Key Spec |
|---|---|---|
| SOF 50000 | Gravure Ester/Alcohol Gloss Varnish High-gloss protective overprint varnish for cigarette packs and paperboard. | Gravure · Gloss ≥ 88 GU · High slip · YC/T 207 compliant |
Published grades represent standard production benchmarks. Backed by HCOLOR's National Engineering Center, we recalibrate chemical matrices, viscosity curves and drying windows to match your unique pressroom variables:
SOF 50000 lays down a tough, flexible protective film over printed ink layers. It controls dynamic COF slip for high-speed automated packaging lines while locking in graphic brilliance.
| Appearance | Clear fluid, dries crystal clear |
|---|---|
| Solid Content | 28 ± 2% |
| Gloss (60°) | ≥ 88 GU |
| Rub Resistance | ≥ 400 cycles (ASTM D5264) |
| Residual Solvent | ≤ 2.5 mg/m² |
| Storage | 12 months, 5 – 35°C, sealed |
The laboratory parameters published above reflect standard benchmark batches tested under controlled baseline conditions. In industrial pressrooms, coating performance is governed by multiple variables—including anilox screen volume and cylinder cell depths (15–45 μm), drying tunnel length and airflow dynamics, substrate surface tension, and seasonal workshop temperature/humidity fluctuations, alongside solvent-to-water transition requirements.
Backed by our National "Little Giant" R&D Center and Provincial Engineering Laboratories, HCOLOR offers on-demand formula recalibration. Our ink chemists fine-tune resin matrices, viscosity curves (15–45s), evaporation rates, and functional additives to seamlessly adapt to your plant's printing presses. HCOLOR application specialists also provide on-site press trial verification and remote spectrophotometric support, ensuring stable transfer and high runnability without risking production downtime.
The foundational quality management system accreditations, environmental certifications, and general regulatory attestations displayed above (including ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and China Environmental Labelling "Ten Rings") represent HCOLOR's corporate manufacturing governance and baseline formulation safety standards across our production facilities.
In commercial conversion, specific ink formulations and sub-models comply with specific international directives and migration thresholds (including US FDA 21 CFR 175.300 / 176.170 indirect food contact criteria, China National Food Safety Standard GB 4806.10, EU REACH Regulation (EC No 1907/2006) SVHC candidate screening, RoHS 2.0 heavy metals exclusion, and Tobacco Industry VOCs Standard YC/T 207).
Because barrier properties and migration values depend heavily on press substrates (e.g. virgin folding boxboard, PE extrusion coatings, metallized transfer paper, or PET/BOPP films), coat weight, and pressroom drying configurations, official third-party test reports (from accredited bodies such as SGS, CTI, and PONY) and batch-specific compliance certificates are provided upon formal inquiry and pressroom trial verification. Please contact our technical compliance team to verify documentation tailored to your exact application.
Engineering synergy across high-gloss varnishes, dead-matt coatings, digital primers and soft-touch tactile effects to solve specific converting challenges across global packaging sectors.
High-Speed Gravure Tobacco Cartons & Premium Coating Systems
Tailored for 500+ packs/min cigarette packaging lines. WOF1017 delivers dynamic COF slip control and 180°C thermal stability withstanding hot-stamping and packaging jaws without scuffing. Paired with WOF2004 dead-matt varnish (≤10 GU) for non-whitening high-contrast luxury finishing. 100% compliant with YC/T 207 VOC emission standards.
Luxury Cosmetics, Electronics Gift Boxes & Refractive Packaging
Directly replaces plastic soft-touch BOPP films with single-pass water-based tactile coating, enabling 100% paperboard recyclability and plastic reduction. Delivers a plush velvet peach-skin hand-feel with anti-fingerprint and non-whitening durability, while WOF1308 ensures downstream precision hot-foil stamping and folder-gluing without edge cracking.
HP Indigo Digital Labels, Specialty Films & Anti-Counterfeiting Primers
Pre-print coating primers delivering 100% HP Indigo ElectroInk anchorage across synthetic label stocks (BOPP, PE, PET, shrink films) and uncoated specialty papers. Passes stringent 3M 610 tape cross-hatch peel tests with zero ink flaking, maintaining transparent clarity at an ultra-economical 1.0–2.0 g/m² dry film weight.
Commercial Folding Cartons, Pharmaceutical & Paper Bag Packaging
Single-pass sheet-fed offset inline coating solution delivering rapid wet-on-wet levelling and mirror-like gloss (≥82 GU) or uniform satin-matt finish. Powder-free fast drying allows direct downstream die-cutting without set-off, fully compliant with GB 4806 food contact packaging safety regulations.
A rigorous 4-step engineering protocol designed to adapt custom resin matrices and viscosity windows to your exact pressroom specifications.
Tell us your substrate (BOPP, CPP, PET, PE, PVC, Kraft paper, gold/silver cardstock), press type (rotogravure, flexo, screen), line speed (150-400 m/min), drying tunnel specs, and target color standards.
Our senior ink chemists formulate eco-friendly water-based resin matrices and disperse high-purity pigments, achieving precise color coordinates (L*a*b*) under standard D50/D65 illuminants with ΔE < 0.8 spectral accuracy.
We dispatch 1-5 kg trial ink lots within 48h alongside detailed drawdowns and viscosity guidance. Our application engineers provide remote or on-site support to optimize ink transfer, drying speed, and adhesion.
Backed by Dongguan, Kunming, and Yueyang production bases (30,000+ tons annual capacity), orders undergo strict QC batch release before dispatch in palletised 20kg/200kg drums or 1000kg IBCs via sea/air freight.
Download official TDS documents across the entire SOF 50000 Series portfolio or connect with HCOLOR's National Engineering Center for bespoke viscosity and drying curve adjustments.
Yes. Our color lab matches by spectrophotometry against your target, on your own substrate and printing process. Send us a printed sample or the reference values and we will return a matched draw-down for approval.
Standard shades ship from stock in 20 kg units. Custom-matched colors are typically produced from 100 kg upward, though we can supply smaller trial quantities for a first press qualification run.
Yes. We supply trial sample pails for press testing on your own line, together with technical support to fine-tune viscosity, anilox cell volumes, and curing/drying parameters.
Keep containers sealed and out of direct sunlight within the temperature range given on the technical data sheet (5–35°C for waterborne, 5–25°C for UV). Shelf life is 12 months from the production date.
Every shipment is accompanied by a Certificate of Analysis (COA) and Safety Data Sheet (SDS). Official test declarations including YC/T 207 (tobacco VOCs), GB 4806 / FDA (food contact), and China Environmental Labelling (Ten-Ring) are available on request.
Connect directly with our ink formulation lab and international team for custom samples, press-side trial support, and factory volume pricing.
Specify your printing substrate, press parameters, or request free formulation trial samples. Our chemical engineers will review and respond with recommendations within 24 hours.
