Investigation of the factors affecting the insulation propertiesof down-filled clothing

Goose down is an ideal raw material used in producing many products because it is light and bulky, has low thermal conductivity, and has the best thermal insulation properties. Due to its light, soft and warm-feeling structure, these feathers are considered a superior and luxurious filling material for bedding and clothing against the cold climate. Nowadays, goose down is used in the production of some items such as souvenirs or ornaments, in the production of pillows and quilts, in the production of winter alpinist and ski clothes, sleeping bags, and seat production. Goose down is an excellent insulation material and its performance can be improved by the appropriate design and production method. Clothes or sleeping bags made from goose down are usually made of baffles. Feathers are filled by hand or machine to these baffles which can be produced in different constructions. Several factors influence the thermal insulation of a goose-down-filled product. The most important factors are fill power, goose down weight and goose down rate. In this study, the production of goose down products and the factors affecting the thermal insulation properties of these products were investigated.