Folding cushion

The method of making an inflatable, deflatable and foldable device comprising the steps of selecting:

• selecting a first and a second plastic sheet member, each said first and said second plastic sheet member having a front edge, a back edge, a first side edge and a second side edge;
• constructing a first folding channel in said first plastic said extending from said front edge to said back edge of said first plastic sheet member thereby dividing said first plastic sheet member into a first portion and a second portion, said channel for providing a first hinge line on said first plastic sheet member to enhance the folding memory of said first plastic sheet member along said first hinge line;
• constructing a second folding channel in said second plastic sheet extending from said front edge to said back edge of said second plastic sheet member thereby dividing said second plastic sheet member into a first portion and a second portion, said channel for providing a second hinge line on said second plastic sheet member to enhance the folding memory of said second plastic sheet member along said second hinge line;
• inserting a valve in one of said first and said second plastic sheet members for permitting fluid communication of said inflating fluid into said chamber to define an inflated device, said channel further permitting fluid communication of said inflating fluid out of said chamber to define a collapsed and deflated device;
• sealing together said front edges, said back edges, said first side edges and said second side edges of said first and said second plastic sheet members, respectively, to provide a fluid tight chamber between said first and said second plastic sheet members to receive an inflating fluid;
• said sealing step includes the step of aligning said first and second folding channels in juxtaposition with each other so as to enable said first folding means and said second folding means to be simultaneously folded along said first hinge line and said second hinge line, respectively, such that said first side edges of said first and said second plastic sheet members are proximate said second side edges of said first and said second plastic sheet members to form a flat, partially folded and deflated inflatable cushion.