1. 
   Back-coating
   a process by which two different materials (such as metal-foil and tissue-paper) are laminated together to form a single foldable sheet.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   Backcoating
   Used on a thermal transfer ribbon to prevent the ribbon from sticking to the printhead and to the substrate (media/label material). It also protects the printhead from excessive heat, static, and abrasion
   Found op http://www.thebarcodewarehouse.co.uk/help/glossary.xhtml
   
   
3. 
   Backcoating
   Backcoating is the lamination of two sheets of paper back to back to create a superior paper for folding origami models. ...
   Found op http://en.wikipedia.org/wiki/Backcoating
   
   

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