| 摘要 |
<p>A thermally insulating jacket such as a sleeping bag is provided with an inner layer (1) and an outer layer (2) to which are attached a plurality of internal walls (3) so as to define a plurality of boxes. The boxes are filled with insulating material such as down or synthetic material. The inner layer is elasticated by, for example, the provision of elasticated thread (7) which causes the inner layer to pull inwards away from the outer layer. This reduces the space between the inner layer and the person or article being covered by the jacket, so as to reduce heat transfer by convection and also increases the thickness of the jacket, thereby improving its thermal insulation. In addition to sleeping bags, the invention can be applied to articles of high insulation clothing and also jackets for insulating hot or cold water tanks.</p> |
