| 摘要 |
A thermal insulating and shock absorbant bag, particularly a carrying bag, is formed of walls each having an outer layer of thin, flexible thermoplastic foam of a thickness between the 0.07 mm and 0.14 mm, which provides effective insulating properties. The bag walls each have an inner layer of thin flexible thermoplastic polyethylene film connected by welding to the outer layer at the edge portions of the bag. The inner layer may be formed of two films of polyethylene film with an intermediate film of metal foil located therebetween and steam-connected to one of said polyethylene films. In a preferred embodiment, a flexible insulating layer of padded polyester cotton is disposed between the inner and outer layers to improve the insulating and shock absorbing qualities of the bag. The insulating layer is thermoplastic and is welded to the surrounding layers. |
