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Hard Pack

Inner Frame

Core Description

The Inner Frame (also known as the "Frame Board") is the critical structural component of hard-box cigarette packaging. It acts as the "skeleton" of the pack, providing the necessary rigidity to maintain the box's shape and protect the cigarettes from external pressure. Our inner frame board is engineered with high-modulus fibers to ensure extreme stiffness, clean folding, and seamless compatibility with ultra-high-speed packaging machinery.

Product Specifications

Technical Parameter Specification Range Test Method
Material Basis Weight 190–220 g/m² (SBS / FBB) ISO 536
Caliper (Thickness) 240–290 μm ISO 534
Bending Stiffness (MD) ≥ 8.0 mN·m ISO 5628
Bending Stiffness (CD) ≥ 4.0 mN·m ISO 5628
Surface Smoothness (Gloss Side) 0.5–1.0 μm (PPS) ISO 8791-4
Coefficient of Friction (COF) 0.25–0.35 (Static / Kinetic) ASTM D1894
Dimensional Tolerance ±0.1 mm (Laser Die-Cut) Standard Gauge

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