| 摘要 |
There is described a method of fabricating a paperboard enclosure comprising the steps of forming a paperboard web having a substantially continuous, hot, viscous curtain of polymer applied exclusively to one side thereof, by means of printing apparatus, applying a solution of water based, polymer emulsion to relatively small, predetermined areas of the other side of the paperboard web, cutting an enclosure blank from the web having an inside surface corresponding to the one web side and an outside surface corresponding to the other web side, and forming an enclosure configuration from the blank with paired closure portions having lapped, mutually facing surfaces, one of the mutually facing surfaces being an inside surface and the other facing surface being a predetermined area of polymer emulsion whereby the mutually facing surfaces are bonded together as a consequence of mutual heating and contacting. |
