Abstract: A multi-layer core for use in a vacuum insulation panel and an insulated container utilizing a vacuum insulation panel containing the multi-layer core is provided. The multi-layer core includes at least a first layer of a heat resistant material and a second layer of a material which is less heat resistant than the first layer or which has a lower melting point than the first layer. The core preferably includes a third layer comprising a heat resistant material. The second layer preferably comprises an open cell foam, and the first and third layers preferably comprise a silica material. A vacuum insulation panel which includes the multi-layer core is preferably provided in an insulated container including exterior and interior walls which form a pocket into which the vacuum insulation panel may be inserted. The container may be used to store and/or transport a variety of temperature sensitive items such as food, medicines, and the like.

Abstract: A pizza warmer and oven system in which a plurality of pizza warmers containing a phase change material can be charged to their preferred temperatures by resistance heaters positioned in shelves above and below each warmer in an oven. One embodiment has top shelves biased in close proximity with the warmers. Moving a lever causes the upper shelves to be raised by cams, allowing removal or insertion of warmers. Insertion of warmers into the oven trips switches, starting timing circuits which energize the heater and charging indicator lights. At the end of the timing cycle, indicator lights signal the warmer's charged condition. In another embodiment, the top shelves are gravitationally biased down but are each free to move upward slightly for warmer insertion or removal. Turning on the oven energizes the heaters. A thermostat in the heater circuit turns off the heater at a pre-selected temperature.