Flexographic printing plates are relief-printing plates made of rubber or photopolymer. Rubber plates are engraved or molded. Photopolymer plates require exposure to UV light during the platemaking process. Plates are mounted on plate cylinders
US Department of Labor, Ergonomics in the Printing Industry eTool: Glossary, Occupational Safety & Health Administration OSHA, Washington, D.C., USA 2010. https://www.osha.gov/SLTC/etools/printing/glossary .html, (OSHA/ Ergo in Printing Ind - Amer) {621}