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<p>Sanitary napkins are essential during menstruation, but they can sometimes cause skin irritation due to friction. In this study, we propose a novel design: introducing a low-friction layer within the bulk of a sanitary napkin. Friction tests were conducted between an artificial skin block and sanitary napkin specimens with and without a low-friction layer. The strain distribution on the lateral side of the artificial skin block was experimentally measured. The friction coefficient and strain decreased when the low-friction layer was applied under loads greater than 1.96 N. The strain increased with normal load. Because lower strain on the skin correlates with reduced skin irritation, the use of a low-friction layer in sanitary napkins is expected to reduce skin irritation, particularly under high contact pressure.</p>

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Low friction layer in sanitary products for reduced skin irritation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月29日

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  • Toshiaki Nishi,
  • Kenta Matsui,
  • Rina Ito,
  • Mihoko Kuramochi,
  • Masaya Fujita,
  • Takeshi Yamaguchi

摘要

Sanitary napkins are essential during menstruation, but they can sometimes cause skin irritation due to friction. In this study, we propose a novel design: introducing a low-friction layer within the bulk of a sanitary napkin. Friction tests were conducted between an artificial skin block and sanitary napkin specimens with and without a low-friction layer. The strain distribution on the lateral side of the artificial skin block was experimentally measured. The friction coefficient and strain decreased when the low-friction layer was applied under loads greater than 1.96 N. The strain increased with normal load. Because lower strain on the skin correlates with reduced skin irritation, the use of a low-friction layer in sanitary napkins is expected to reduce skin irritation, particularly under high contact pressure.