| 摘要 |
The application relates to a flame blocking venting trap (FBVT) adapted to vent a protection footwear, the FBVT comprising a proximal layer; a central venting layer superposed to the proximal layer; and a distal layer superposed to the central venting layer. The proximal layer is forming a first fold with the central venting layer and the central venting layer is forming a second fold with the distal layer to act as a flow restricting apparatus configured to prevent air and flames to get through the FBVT from the outside of the protection footwear and allow air to get through the FBVT from the inside of the protection footwear. A protection footwear including one or many FBVT is encompassed by the present application. |
