| 摘要 |
An enclosure comprises a thermal barrier (42) for protecting a heat sensitive component (40). The thermal barrier includes at least one endothermic layer (48, 54, 58) that includes water gelled with a thickening agent, absorbed onto a cellulose-comprising fabric or paper. The endothermic layer is sandwiched between layers comprising metal foil or sheet (49, 52, 56).
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