5-Ply Corrugated Board (also known as double-wall corrugated board) is a five-layer structure made by alternately gluing three layers of corrugated medium and two layers of containerboard (liner and inner liner). Common flute combinations include AB, BC, or BE flutes. It offers high compression strength, cushioning performance, and burst resistance, and is widely used for heavy-duty packaging, fragile goods transport, and export cartons. In foreign trade, this term is often used to specify packaging materials; customers may request cartons made of 5-ply corrugated board with specified flute type, grammage, and burst strength. Note: Distinguish from 3-ply (single-wall) and 7-ply (triple-wall) corrugated board. Flute standards (e.g., A, B, C, E) vary by country and affect performance; quotes must specify flute combination and physical indicators. Also, '5-ply corrugated board' is not the same as '5-layer board,' which may refer to other materials. Use accurate English terms in contracts or L/Cs to avoid ambiguity.
📝 Examples
1. The mechanical equipment we export requires 5-ply corrugated board packaging. Please provide a quotation for cartons with AB flute and burst strength no less than 1500 kPa. (Note: For heavy equipment export, emphasizing flute type and strength requirements.)
2. According to the L/C requirements, all outer cartons must use 5-ply corrugated board, and the carton surface must be printed with shipping marks. (Note: L/C specifies packaging material to ensure compliance with document presentation.)
💡 Foreign Trade Tips
Foreign trade terms are the foundation of international business communication
Trade practices may vary slightly by country; pay attention when using them
When using terms in contracts, specify the applicable version (e.g., Incoterms 2020)
For unfamiliar terms, use GlobalSync's multilingual email helper to confirm with your partner