Electrolytic Tinplate Sheets & Coils for Easy Open Ends (EOE) & Can Lids
Specialized China manufacturer of ultra-thin gauge (0.15mm – 0.22mm) electrolytic tinplate sheets for Full-Aperture Easy Open Ends (FA-EOE), Stay-On-Tab (SOT) beverage ends, Ring-Pull covers, and sanitary bottom ends. Engineered for zero-leak scoring lines, extreme temper uniformity (DR8 / T4 / T5), and certified food-grade BPA-NI lacquering.
Figure: Precision Stamped Easy Open Ends (EOE) and Gold Lacquered Sanitary Bottom Lids from Sino East Steel ETP
1. EOE & Can End Technical Specifications (ASTM A623 / EN 10202)
| End / Lid Type | Diameter Range (mm) | Base Steel & Thickness | Temper Grade (CA / BA) | Tin Coating & Lacquer |
|---|---|---|---|---|
| Full Aperture EOE (Canned Tuna/Meat) | #211 (65mm), #300 (73mm), #307 (83mm) | MR Grade (0.16mm – 0.20mm) | DR8 / DR550 (High Rigidity) | 2.8/2.8 g/m² + Internal Meat Release Gold Lacquer |
| Sanitary Plain Bottom Ends | #202, #211, #300, #401 (99mm) | SPCC / MR (0.17mm – 0.22mm) | T4 (TH58) / T5 (TH62) | 2.8/2.8 or 5.6/5.6 g/m² + Epoxy Phenolic |
| Milk Powder Peel-Off Ends (POE) | #307 (83mm), #401 (99mm), #502 (127mm) | MR Type D (0.18mm – 0.24mm) | T3 (55±3) Continuous Annealed | 2.8/2.8 g/m² + Food Contact Clear Polypropylene Film |
2. Zero-Leak Score Line Integrity & Food Safety Compliance
Easy open end production demands exact gauge control within ±0.005mm. Sino East Steel tinplate sheets undergo automatic pinhole detection and laser gauge scanning to eliminate micro-cracks at the rivet formation and tear score line, preventing pop-up leakage during high-temperature sterilization (121°C retort processing).
Related Product Lines: Tinplate for Food & Aerosol Can Bodies | Tinplate & TFS for Bottle Caps & Closures
3. Technical FAQ: Easy Open Ends (EOE) Tinplate Materials
Q1: What is the optimal temper grade for DR (Double Reduced) tinplate EOE?
DR8 (yield strength ~550 MPa) is the international industry standard for high-strength thin-gauge (0.16-0.18mm) EOE, allowing material weight reduction of up to 20% while maintaining buckle pressure resistance over 250 kPa.
Q2: Are your lacquered tinplate sheets certified for direct food contact?
Yes, our food-grade lacquered tinplate complies with FDA 21 CFR 175.300 and EU Regulation No 10/2011, with migration test reports and BPA-NI (Non-Intent) certificates supplied alongside MTC 3.1.
DR8 / DR9 Double-Reduced Tinplate: 18% to 22% Stamping Yield Increase
For high-speed automated canning and closure lines, downgauging from Single-Reduced (SR T4) to Double-Reduced (DR8 / DR9) tinplate significantly lowers raw material expenditure while exceeding international axial buckle and collapse pressure standards:
| Parameter / Metric | Standard Single Reduced (SR T4) | Double Reduced (DR8 / DR9) | Converter Benefit & Impact |
|---|---|---|---|
| Nominal Thickness (mm) | 0.21mm – 0.22mm | 0.15mm – 0.17mm | 25% Material Thickness Reduction |
| Target Hardness (HR30T) | 58 ± 3 | 73 ± 3 (DR8) / 77 ± 3 (DR9) | Higher yield strength (550 – 620 MPa) |
| Stamping Can Ends per Metric Ton | Approx. 82,000 pcs (Ø 73mm) | Approx. 99,500 pcs (Ø 73mm) | +21.3% More Finished Ends / Ton |
| Axial Collapse Pressure | ≥ 240 kPa | ≥ 260 kPa (Enhanced Rigidity) | 100% Meets Safety Standards |