E F Flute Brown Black Corrugated Cardboard 110gsm 120gsm 150gsm Various Thicknesses

E F Flute Black Corrugated Cardboard 110gsm 120gsm 150gsm Various Thicknesses

Black E / F Corrugated Paper Introduction

E-Flute

• Flute height: 1.1mm. Thinner and stiffer than A/B/C-flute (used for outer packaging).

• Purpose: Developed for folding cartons to enhance cushioning.

• Features: Smooth surface enables complex printing; ideal for inner packaging and decorative cartons for small items.

F-Flute

• Micro-corrugated liner replaces traditional cushioning materials—eco-friendly and boosts compressive strength.

• Printing: Direct offset printing compatibility for high-quality graphics.

Black E / F Corrugated Paper Usage

1. Single Wall Cardboard

• Structure: 2 paper layers + 1 corrugated core.

• Uses: Most common type; forms corrugated cartons for packaging, the outer packaging for sales and transportation.

2. Double Wall/Multiwall Cardboard

• Structure: 3 paper layers + 2 corrugated cores.

• Features: Higher strength.

• Uses: Packaging for heavy or fragile bulky items; buffer cushion in packaging.

3. Special Corrugated Cardboard

• Enhancement: Plastic/resin coating added to improve strength and moisture resistance.

• Purpose: Upgrades standard corrugated cardboard for durability in challenging conditions.

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