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How do foil blankets work actually? Doesn’t metal foil transmit heat very well which would make them a bad blanket to trap heat?
by TedShiller 5y ago
How do foil blankets work actually? Doesn’t metal foil transmit heat very well which would make them a bad blanket to trap heat?
- nerfhammer 5y agoIt's actually mylar that they're made of. https://en.wikipedia.org/wiki/BoPET https://en.wikipedia.org/wiki/BoPET
- jwagenet 5y agoI believe besides acting as a wind barrier, the foil reflects heat internally. They would not be effective in direct contact with skin and another surface.
- Cerium 5y agoI spent a night in the woods with a Mylar foil blanket. It blocks wind and reflects the heat back to you. When it came loose I would immediately wake up cold and reposition the blanket. The thermal effect was instant on and off.