Duplex is the art of bonding two sheets of paper or board together to create a high-quality finish. Triplex is the process of bonding three sheets together.
Both techniques create a premium single sheet, with a sandwich effect of colour to the card.
The sheet can then be printed upon into small format (mostly business card format) and designs are further enhanced with foiling and embossing.
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![](https://www.northernprintsolutions.co.uk/wp-content/uploads/2022/05/stock-photo-white-and-red-ply-thick-stock-business-cards-floating-on-a-black-background-a-mockup-for-design-1814317214-uai-1500x1000.jpg)