| 摘要 |
<p>A self-inflatable mattress is formed from an open pore foam core and one or more layers of dual melt film. Initially, a layer of dual melt film is placed on top of the open pore foam block such that the side with the lower melting temperature contacts the foam core. A non-stick, heat transferable buffer layer is then placed on top of the film and heat and pressure are applied, preferably through a roller, causing the bottom surface of the film to stick to the top surface of the foam core. The edges of the top sheet are also adhesably attached to the sides of the core using a pair of heated side pressure rollers. Lastly, the cushion is inverted and a second, or bottom, sheet of dual melt film is placed on top of the foam core and attached to the bottom surface and the sides in a similar manner. Finally, a valve, which may be either oral, or one way, is attached to the side of the mattress. The dual melt film adheres nicely to the sides of the mattress and to the other film to which it melts and bonds and to any indentations therein so that when it inflates it can assume a variety of compound shapes including convex, concave, or compound portions.</p> |
