Cardboard is a particularly thick and heavy paper material consisting of a central corrugated layer and two flat side sheets.
Its origins date back to 15th-century China, while the first commercial cardboard boxes were sold in England in 1817.
The boundary between paper and paperboard is conventionally set at 224 g/m² with a thickness of at least 175 µm; the mechanical and optical properties of paperboard are specified by the ISO 5651:1989 standard.
Type of cartons:
- Flat cardboard or cardboard
- Simple wave cardboard, consisting of two outer sheets and one inner corrugated sheet.
- Double wave cardboard, consisting of three sheets, two outer and one middle sheet and between them two corrugated sheets.
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