Effects of Structure in the Coated Layer on Warmth-Retaining Properties of Coated Fabrics

Several agents named Warmth-retaining agents are mixed in the coated layers on the polyester fabrics.The aluminum-powder or the copper-powder which retains the warmth with reflection shows greater warmth-retention when the coated layer is on the outer side of the clothes than on the inner side.On the other hand, carbon-powder or the oxidized iron-powder shows greater warmth-retention when the coated layer is on the inner side of theclothes than on the outer side.Electron micrographs showed clearly the various structures in the coated layers when the warmth-retaining agents are mixed in the resin.There are the multilayers, porous layers, and/or airly layers made with the warmth-retaining agents, air, and the resin.Basing on these structure, roles of the warmth-retaining agents are discussed.