| 摘要 |
<p>The invention provides a flexible packaging sheet including at least three layers and being suited for wrapping, packaging and shipping food articles that are to be heated in a microwave oven. The laminate has inner and outer layers of flexible material and a layer of microwave interactive coupling material interposed between the inner and outer layers. A porosity differential exists between the inner and outer layers, the inner layers being relatively gas and vapor impervious, and the outer layer being relatively porous for venting and thus eliminating volatile fumes, smoke, vapor or gas produced within the laminate during heating of the food. In this way such fumes, smoke, vapor or gas is removed and contact between it and the food is prevented.</p> |
