Effects of formulation of Polyoxyethylene Alkylether (APE) and protease (Alcalase) in LAS (DBS) -based detergent were studied by the cubic model of Scheffé's Simplex Lattice Design. The soil removal efficiency of protein, synthetic sebum, mud (Dilivium) and the carbon black compounded in soiled fabrics was determined and was represented by the Scheffé's special cubic equation to predict the soil removal efficiency by the interaction between the soils and the components of detergent. In the DBS system in the hard water, the detrimental effects of hardness ion were observed in the removal efficiency of all soils, but in particular the removal of particulate soils was the most influenced compared with protein and oily soils. However, the soil removal efficiency were more enhanced on the lattice with three components in DBS system than in AOS system, or in 100 ppm hard water than in O ppm hard water by the synergistic effect of three components; DBS (or AOS), APE and Alcalase. The addition of 3 % sodium oleate in the DBS system to aim the masking of the hardness ion, was proved to enhance the removal efficiency of particulate soils on the lattice with three components by the function of the synergistic effect.
It is the purpose of this paper to point out a few problems about the textile materials, shape and size of baby's commercial cover-all and to consider the countermeasures to improve their faults, from the view point of an adaptability to the body movement. The measurements are made of the garment and skin strain caused by the body movement, the growth ratio of baby's body and the physical properties of textile materials. The results are as follows: 1) The vertical garment strain is higher than the horizontal one, and the growth ratio of length items is greater than that of girth ones. Therefore, the vertical garment stretch is necessary, and the use of knitted fabrics in course-way is desirable along the length direction of baby's body. 2) As the method to compensate the skin strain of knee, the formation of a convex surface by taking-in or gathering is more desirable than by the seam line which reduces the fabric stretch and increases the bending stiffness. 3) The raglan sleeve is more suitable than the set-in sleeve, because the fabric stretch is restrained by a shoulder and an arm scye girth seams of set-in sleeve. 4) The vertical trunk girth when putting on a diaper are larger than that of nude. But this increments by putting on a diaper of commercial cover-all is unsuitable and insufficient. Therefore, the greater tension resulted at the gore of commercial cover-all. It is suggested that the further study on the position and size of the gore is necessary, when considering the adaptability to body movement of cover-all.
Bagging of garments is one of the typical fatigue phenomena. It is normally seen on such areas as the elbow or knee when excess stress is exerted. This paper proposes some objective evaluation methods for bagging. In order to simulate actual bagging in wearing, a bagging test apparatus has been developed. After the deformation is applied to the samples under test, three-dimensional shape information is recorded on a film by using moiré topography. Then, the resultant moiré patterns have been investigated as follows: 1. The sectional profile of the sample under bagging test and the maximum height (hm) of the sectional curve are given. 2. The volume (V) of the bagged sample is computed by: V=nΣi=1Si⋅Δh where, Si: the bagged area of i-th order, Δh: inclimental height. The utility of these methods was confirmed in some experimental results with fabrics to be used for slacks. In order to get basic data for bagging prediction, the volume changes of sample were discussed in relation to the hysteresis of tensile properties of undeformed sample.