| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 06.99 |
| PATENT ASSIGNEE | Westvaco |
| PATENT CLAIMS |
Method for producing substrate for paperboard packaging for redn of edgewicking, said method comprising - Coating first side of paperboard layer with first layer of a sizing material including a styrene maleic anh. binder, whe rein said binder has concn 4% & said paperboard layer is further comprised of a furnish of broke from coated two-si ded paperboard - Coating first layer of particulate minerals exterior to said first layer of sizing material - Coating second side of paperboard layer with first layer of sizing material including said binder for reducing edgewicking - Coating second layer of particulate minerals exterior to said first layer of said sizing material |
| PATENT PHOTOCOPY | Available on request |
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