Abstract: A high solids content explosive charge is formed by placing the dry solids uch as RDX in a mold, adding TNT over the dry solids and holding the interior of the mold at an elevated temperature and reduced pressure to permit diffusion of the liquid TNT through the solids while the vacuum enhances the discharge of air from the mass. In one embodiment, a casing and liner of a shaped-charge warhead is employed for the mold and the TNT is placed in a funnel atop the casing. This assembly is placed inside a heated evacuated chamber for long enough to permit the liquid TNT to diffuse through the solid particles and for air to be discharged. In other embodiments, an air-tight casing is employed whose interior is evacuated while heating is performed.

Abstract: A method and apparatus for forming a longitudinal hem along one edge of a fabric using a hot melt adhesive for securement of the hem. The fabric is advanced along a predetermined path of travel while one longitudinal edge portion of the fabric is directed through an elongate heating chamber and heated to an elevated temperature. The heated edge portion of the fabric then passes through a folding station and the fabric is folded to form a hem. A stream of molten hot melt adhesive is deposited between the overlying fabric layers which define the longitudinal hem and pressure is applied to the hem to cause the molten adhesive to spread and penetrate into the fabric layers and to also prevent relative movement between the fabric layers until the adhesive has sufficiently cooled to secure the hem together.