The comfort of 24 pillows has been compared by 34 adult women in terms of the height and hardness of pillows. Women judged the comfort of pillows by laying themselves on their back using pillows with different filling-up ratio of backweat chaff, flax fiber, panya and feather. The condition of pillows with the most comfortable height and hardness were obtained as follows : (1) The comfortable pillow was 5.7cm high in the dorsal decubitus and 40-50 in percent sinking deformation regardless of the kinds of fillers. (2) Concerning the com-fortable region in terms of both height and hardness, the following relation has been found between the hei-ght of pillow in the dorsal decubitus (A2) and sinking deformation (A3) : A3+5.55A2=α, where α is 90 for backweat chaff, 80 for flax fiber and 60 for panya and feather. (3) For both comfortable height and hardness, the vertical pressure is 50 g/cm2 at the point 4cm below the head. (4) A new test method by using the human head model has been proposed to evaluate the comfort fo a pillow.
During manufacturing process from raw materials to finished goods, wool fibers have been chemically and physically damaged and tended to be attacked by microorganisms. This article aims to study the method to retard or control the damages of the wool fibers by fungi. It deals with the antifungal effect of dyes for wool fibers such as acid dyes, acid mordant dyes and metal complex dyes. It is found that several acid mordant dyes such as Chrome Cyanine FR and Chrome Black ET conc. prevented from growth of fungi on medium. It is also found that Irgalan Yellow GRL, which is one of the metal complex dyes, is effective for controlling the growth of fungi. Nevertheless, the dyed cloth normally shows the growth of fungi. But an excess of dyeing shows little loss in strength. This article also deals with the condition of microbial damage by elctron microscopy examinations.