| 摘要 |
At least one major surface of the core is covered with an inner layer of insulation, and at least one outer layer of material. The outer layer is secured to the inner layer by inserting flexible filament type fasteners through the hollow needle of an installation tool. If the core is made of foam, filamentary fasteners may also be used to secure the inner layer. The insulation layers are ultimately covered and secured in place by a fabric panel which conceals and secures the other components. Filamentary fasteners may also be used to secure a pillow top edge or a top panel to the mattress. |
