Assessment for disposable diapers on the bases of the required clothing ventilation.

这项研究的目的是建议根据所需的服装通风来评估尿布。本实验采用示踪气体法检测尿液负荷对尿布透气量的影响，测试了3个品牌的新生儿尿布、5个婴幼儿尿布品牌和15个老年人尿布品牌的尿布，发现尿布通气量随尿液负荷的增加而减小，而尿湿面积随尿液负荷的增加而增加。比较不同类型尿布的品牌，发现在服装通风和湿润面积方面存在显著差异。在每个品牌中，湿面积与服装通风量之间存在显著的负相关，这表明湿面积较小的品牌可以提供更大的通风量。然而，一些品牌在服装通风方面的关系与从湿润面积方面的假设并不一致。此外，湿润面积与服装通风量之间的回归线斜率在不同品牌之间存在差异。这些冲突表明，在所需衣物通风(RCV)的基础上进行评估，以检查尿布内的小气候湿度是必要的。根据吸收尿布的单位面积蒸发水、湿润面积和内外尿布的绝对湿度差来估算RCV。服装通气量与RCV的实验值之比对吸收尿布有定量的评价。

The aim of this study was to propose the assessment for diapers on the bases of the required clothing ventilation. The tracer gas method allowed the detection of small changes in clothing ventilation of diapers due to urine loading in this experiments and three types of diapers, which were 3 brands for newborn babies, 5 brands for babies and 15 brands for elderly people, were tested.The clothing ventilation decreased, and whereas the wetted area increased with the urine load in all brands. Comparing the brands in each type of diapers, significant differences in the clothing ventilation and the wetted area were found. A significant negative correlation was found between the wetted area and the clothing ventilation in each brand, which suggested that the brands with a smaller wetted area could have provided greater ventilation. However, the relationship among some brands in terms of the clothing ventilation was not consistent with that assumption in terms of the wetted area. Furthermore, the slope of regression line between the wetted area and the clothing ventilation varied among some brands. These conflicts show the assessment on the bases of the required clothing ventilation (RCV) is necessary in order to examining the microclimate humidity inside diapers. RCV was estimated from the evaporated water per unit area, the wetted area and the difference of absolute humidity between inside and outside diaper in absorbed diapers. The ratios of the experimental values in clothing ventilation to RCV have a quantitative evaluation of absorbed diaper.