Abstract
Six different kinds of diapers on the market, A (Baby-Snap), B (cotton gauze), C (Baby-Dia), D (Nishiki-diaper), E (Nishiki-Tebiron) and F (bleached cotton) were picked out to study on their 1) water absorbency, 2) drying speed and 3) elasticity, which were considered to be important characteristics of diapers. 1) and 3) above were also examined after the diapers were washed 50 times. Some of the findings are as follows.
1) The higher water absorbency, the better as diapers, but the fabric whose water absorbency is high has low drying speed as found in A and F.
2) The higher drying speed, the better, but the fabric whose drying speed is high has low water absorbency as found in B and E.
3) The tensile strength of fabric in both woof and warp directions is usually weakened by washing, but B and E are a little better than others with respect to strength in the woof direction.
4) Values of Diaper E for 1) and 2) above are remarkably different from those of others because E is made of polyvinylchloride. On the basis of this finding the combination of D (highly absorbent) and E (weakly absorbent) is considered reasonable and also comfortable for babies.
