Abstract

The purpose of this study is to find at the basic data for the appropriate compressibility of the pillows for the Koreans as well as, for the appropriate conditions to establish the estimating criterion for the pillows on the market place. This paper also aim to grasp thr compressibility of the materials used to make the pillows for sale. The appropriate compressive rate of the pillows have been investigated by sensuous test. The compressive rate, recovery rate, and decreasing rate of compression and recovery have been investigated by means of ergonomic and physical experiments. The results were as follows; 1) By sensuous test, the compressive rate of the pillows for the most comfortable state turns up $45\%{\pm}5\%$ in men and women. 2) As for the compressive rate and recovery rate of the eight pillow materials on market, panya, duck feather two kinds of synthetic fiber are highest, wood is lowest. 3) The compressive rate of panya, duck feather, and two kinds of fiber is within the range of the comfort by sensuous test. 4) In the durability of the compressive rate and recovery rate against the repeated use of the pillows, duck feather is in the highest grade, panya is the lowest grade and the others are graded between two.

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