| 摘要 |
<p>A card sheet including a top material layer having pre-cut weakened lines extending partially but not completely through the top material layer, the top material layer having a front surface and a back surface; and an electron beam cured polymer layer applied as an electron beam curable pre-polymer composition to the back side of the top material layer, wherein at least a portion of the pre-polymer composition diffuses into the top material layer to a depth which, upon electron beam curing to form the electron beam cured polymer, renders the top material layer breakable along the weakened lines. A method of making the card sheet is provided, in which the electron beam curable pre-polymer composition is applied to the top material layer and diffuses into the layer, and the pre-polymer is subsequently cured. The card sheet is cleanly breakable into sub-sheets.</p> |
