Food Grade Electrolytic Tinplate Sheet with BA Finish for Easy-Open Can Ends

Engineered for the demanding requirements of easy-open can end (EOE) manufacturing, this T4 temper electrolytic tinplate sheet features a superior BA (Bright Annealed) surface finish that delivers unmatched consistency for high-precision score-line formation and rivet integrity. Sourced from state-of-the-art continuous annealing and electrolytic tinning lines, this material supports the most stringent quality standards in modern canning operations.

Why BA Finish for Easy-Open Ends

• Microscopic Surface Uniformity: The bright annealed surface exhibits consistently low roughness values (Ra 0.15-0.30 μm), enabling precise laser or mechanical scoring with minimal burr formation and consistent residual thickness for reliable opening forces.
• Superior Lacquer Adhesion: The controlled surface topography ensures excellent wetting and adhesion of both internal protective lacquers and external decorative coatings, reducing the risk of delamination during retort processing.
• Optical Inspection Compatibility: The clean, reflective BA surface facilitates automated vision inspection systems to detect surface defects with high contrast, reducing false rejects and improving line efficiency.
• Consistent Rivet Formation: Uniform grain structure from continuous annealing ensures predictable material flow during rivet staking, critical for maintaining pull-ring attachment strength across millions of cycles.

T4 Temper Advantages

T4 temper (HR30T 58-64) provides the ideal hardness range for EOE applications, offering sufficient strength to maintain panel integrity under internal pressure while retaining adequate ductility for score-line formation and tab riveting without micro-cracking. This temper is widely specified by major EOE converters for 202, 206, 209, and 300 diameter end sizes.

Available Coating Configurations

• 2.8/2.8 g/m² Equal Coating: Standard specification for non-aggressive food products with moderate acidity levels.
• 2.8/5.6 g/m² Differential Coating: Enhanced internal protection recommended for acidic products like tomato-based sauces, pickled vegetables, and citrus fruit segments.

Production Capability & Quality Control

Manufactured under ISO 9001:2015 quality management with full statistical process control (SPC) monitoring throughout the rolling, annealing, temper rolling, and electrolytic tinning stages. Each coil undergoes inline pinhole detection, coating mass verification via X-ray fluorescence, and surface roughness profilometry before release.

Inquire now for technical consultation, material samples, and a customized quotation tailored to your EOE production specifications.