Multi-layer helmet and method for making the same
作者： Michael W. Lowe
DOI:
关键词:
摘要: A protective helmet can include an outer shell and a multi-layer liner disposed within the sized for receiving wearer's head. The inner-layer, middle-layer, outer-layer. inner-layer inner surface oriented towards area of comprise mid-energy management material with density in range 40-70 g/L. middle-layer be adjacent wherein comprises low-energy 10-20 outer-layer comprising shell, high-energy 20-50 grams
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