[in Japanese]

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As one of successive studies on effects of flame retardant finishes, a purpose was focused, this time, on effects of retardants on the discoloration of dyed fabrics caused by the ultraviolet irradiation, which should be taken into consideration as an unavoidable problem in the case of curtains.
Cotton fabrics dyed with nine different kinds of dyes followed by finishing with eight kinds of flame retardants containing nitrogen (N), phosphorus (P), sulfur (S) and chlorine (Cl) as well as with boric acid and borax were irradiated with the ultraviolet ray. The results are summarized as follows:
1) The retardants containing N, P, S and Cl considerably accelerated the discoloration of some dyes, while retarded fading of some other dyes to some extent.
2) On the other hand, boric acid and borax showed a remarkable inhibiting effect on the discoloration of every dye used for this study.
3) The retardants which accelerated the discoloration were converted into those exhibiting the inhibiting effect when mixed with boric acid and borax.
Thus, the boric acid and borax mixture is extremely recommendable retardant not only from its excellent flame retardancy but also from the inhibiting effect on the discoloration of dyed fabrics, which is advantageous when used for such home furnishings as curtains

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The heat transfer of knitted fabrics for underwears which occurs due to drying and evaporation is measured by the use of THERMO LABO II developed by S.Kawabata. The discussion is carried out from the view point of the thermal comfort. The results are as follows:
The thermal resistance R_a and the resistance to evaporative heat transfer R_e are more influenced by the space between a fabric and a heat plate simulating the human skin or by the wind speed than the kind of fiber or the fabric structure. But, when water is absorbed by the fabric, the kind of fiber or the fabric structure have influence on the heat loss. A cotton/polyester blended fabric and a porous polyester fabric show a good wicking property. Therefore, they show greater heat loss and faster recovery from wetting than plating knit fabrics, two-layered knit fabrics, in which a hydrohobic fiber is used at the skin-side, and wool fabrics.

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