| 摘要 |
PURPOSE: A backrest for a knapsack is provided to comfortably support wearer's back while reducing weight thereof. CONSTITUTION: A backrest for a knapsack comprises a seat back, a cushion member, a ventilation hole, and a finishing material. The seat back(100) is formed by adhering inner and outer cover meshes(120,130) to both sides of the cushion member(110) through hot-pressing. In both sides of the cushion member, latex bond is spread in order to facilitate hot-pressing adhesion. A ventilation hole(111) ventilates air between the inner and outer cover meshes. The finishing material is attached to the back side of a backpack through sewing. |
