Patent ID: 9662516
Date: 2017-05-30
CPC Classifications: A41D,A62B,B32B,Y10T

Claim:
1. A laminar structure providing adaptive thermal insulation, comprising: a first layer, a second layer, at least one cavity in between the first layer and the second layer, each said cavity being enclosed by a semipermeable envelope, and a gas generating agent having an unactivated configuration and an activated configuration, the gas generating agent being adapted to change from the unactivated configuration to the activated configuration in response to an increase in temperature in the cavity, wherein said change from said unactivated configuration to said active configuration results in an increase of gas pressure inside said at least one cavity, wherein the first layer, the second layer, and the at least one cavity are arranged such that a distance between the first layer and the second layer increases in response to the increase in gas pressure inside the at least one cavity; and wherein the semipermeable envelope is made of at least two envelope layers of water vapor permeable and at least temporarily as impermeable material, the at least two envelope layers being bonded together.