How to Obtain Good Adhesion of Extruded Polypropylene to Film and Foil Substrates by Using Ozone and Primers, 2006 PLACE Conference

Please Note: This document will be available in PDF format in the "My Electronic Documents" link on the home page once your order has been completed. Please make sure you have the latest version of Acrobat Reader. Click on the Acrobat Reader icon to check for the latest version, it’s FREE. To print a hardcopy of a PDF file correctly you must have a postscript printer. If you are not sure if your printer is a postscript printer please refer to your owner’s manual.

This paper demonstrates that extruded polypropylene, which is notoriously difficult to adhere to substrates, can be easily bonded when the melt is surface-oxidized with ozone and extruded on primed substrates. The effects of polypropylene type and ozone level were studied and the adhesion and moisture resistance evaluated. The surface of the polypropylene was stained by a new technique to measure the degree of oxidation by ozone. While the surface oxidation of polypropylene increases with ozone flux, the adhesion maximizes at intermediate ozone levels.