| 摘要 |
<p>In a multilayer structure (10, 20, 30) useful for cook-in applications, two complementary films (11, 12) are laminated to one another. One or both of the films includes a barrier layer (12, 28, 39). At least one of the films includes an outer layer, which forms an outer surface of the multilayer structure, having a relatively high surface energy even when untreated (e.g., by corona treating). That same layer includes at least about 10 % (by wt.) of one or more polymers having a Vicat softening point of at least about 65 °C. The laminated structure exhibits good adherence to protein, an extremely low permeance to oxygen, an ability to shrink around a packaged product in a controlled fashion, a seal layer with a softening point that is sufficiently high to survive cook-in conditions, an ability to be sealed around a forming shoe without necking down, resistance to clip cuts, and an ability to be printed in such a manner that the printed image is protected.</p> |
