What is the basis of the insulating effect of down and feathers?
It is almost impossible to examine the filling of finished products and check, whether the composition of the filling was reported correctly on the label.
It is almost impossible to examine the filling of finished products and check, whether the composition of the filling was reported correctly on the label.
Source: ARO Artländer GmbH, Kettenkamp. |
Down and feathers can be compressed to a small volume then. If the pressure, for instance the weight of a human body, is removed, the down and feathers will quickly recover their original shape. Since they are resilient, they can be compressed a billion times and recover their original shape again and again. In the course of this down and feathers form countless air-filled pads which act as an insulating layer.
Due to their three-dimensional structure and the capability to continuously recover their original shape, down store quite large amounts of air in relation to their weight. Since down are very light, they keep the sleeper warm and comfortable without much weight. |
Down-and-feather-filled duvets are always capable to regulate the climate in bed. The idea of heat accumulation under a down–and-feather-filled duvet might trace back to the “bulging balloon bed” shown on the pictures in Wilhelm Busch´s classic children´s stories. However, scientific research on the subject “micro climate in bed“ revealed that high temperatures do not occur under featherbeds, even less under a down-filled duvet which is light by nature.
Further information at :
Further information at :