There are a lot of new sciences that have been inspired by common phenomena and even by old traditions practiced in our daily lives. Eventually, it may induce unexpected new technologies after deeply explored. In this paper, inspired by the wearing of traditional cloth, named sarong, by the community in the South East Asian countries and others, we investigated the behavior of sheets folded like rolling of sarong around the stomach. Simple equipment was designed to qualitatively collect the data and combined with simple modeling. Rolling of the sarong around the stomach generates the joining force of two sheets, increasing proportionally to the square of the number of rolling. This finding is potentially applied for developing a method for strongly joining sheets by simply rolling and releasing the join by simply unrolling. This work can also be simply duplicated elsewhere so that it is worthy of teaching materials at undergraduate levels. Both scientific and teaching contents can be extracted simultaneously.

中文翻译：

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一条围着身体卷起来的纱笼，说明把折叠和卷起来的两张纸分开的力是非常大的

有许多新科学的灵感来自常见现象，甚至是我们日常生活中的旧传统。最终，它可能会在深入探索后引发意想不到的新技术。在这篇论文中，我们受东南亚国家社区和其他人的穿着传统布料纱笼的启发，调查了折叠起来的床单的行为，就像围裙一样卷在肚子上。简单的设备旨在定性收集数据并结合简单的建模。围裙在胃周围滚动会产生两片的结合力，与滚动次数的平方成正比。这一发现可能用于开发一种通过简单地滚动和通过简单地展开来释放连接来牢固连接板材的方法。这项工作也可以简单地复制到其他地方，因此值得作为本科阶段的教材。可以同时提取科学和教学内容。