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    • 2. 发明授权
    • Microwaveable barrier films
    • 微波屏障膜
    • US5256846A
    • 1993-10-26
    • US755082
    • 1991-09-05
    • Glenn J. Walters
    • Glenn J. Walters
    • B65D81/34H05B6/80
    • B65D81/3446B65D2581/344B65D2581/3466B65D2581/3472B65D2581/3474B65D2581/3477B65D2581/3478B65D2581/3479B65D2581/3489Y10S99/14Y10T428/25
    • Shelf stable packaging films and packages which are microwaveable yet are substantially impermeable to gases and ultraviolet energy and selectively permeable to microwave energy are described. The films include a water vapor and oxygen barrier substrate having a first side upon which is deposited a metallic coating capable of selectively transmitting a portion of a microwave energy field through the substrate. The coating is formed in a plurality of discrete, microwave reflective areas separated by non-reflective gaps. The shape and spacing of the areas is varied so that the microwave energy transmission through non-coated areas of the barrier is sufficient to avoid arcing and heat the object but not cook the object. A food packaging system for storing and heating food by microwave energy, which includes the microwave barrier film of this invention, is also described.
    • 描述了可微波的稳定的包装膜和包装,其基本上不透气体和紫外线能量并且对微波能量选择性渗透。 膜包括具有第一侧面的水蒸气和氧气阻挡性基材,在其上沉积能够选择性地透过微波能场的一部分穿过基底的金属涂层。 涂层形成在由非反射间隙分开的多个分立的微波反射区域中。 区域的形状和间距是变化的,使得通过屏障的非涂覆区域的微波能量传输足以避免电弧和加热物体而不是烹饪物体。 还描述了一种用于通过微波能存储和加热食物的食品包装系统,其包括本发明的微波屏障膜。