Abstract: A permeable sheet material comprised of particle-loaded, melt-blown fiber web having a plurality of reinforcing fibers extending therethrough is provided. The reinforcing fibers are needled through the web of melt-blown fibers and are then bonded to fibers on the opposing faces of the layer of melt-blown fibers to hold the reinforcing fibers in position. Solid particles dispersed in the layer of melt-blown fibers are preferably vapor-sorptive particles, e.g., activated carbon, so that the sheet material will sorb vapors passing therethrough. The sheet material is particularly useful as a component of a chemical protective garment.

Abstract: A durable fibrous sheet material comprised of a melt-blown fiber web having a plurality of reinforcing fibers extending therethrough is provided. The reinforcing fibers are needled through the web of melt-blown fibers and are then bonded to fibers on the opposing faces of the layer of melt-blown fibers to hold the reinforcing fibers in position. Solid particles can be dispersed in the layer of melt-blown fibers. Such particles are preferably vapor-sorptive particles, e.g., activated carbon, so that the sheet material will sorb vapors passing therethrough. The sheet material is particularly useful as a component of a chemical protective garment.

Abstract: A multi-ply non-woven sheet material and pressure-sensitive adhesive tape made therefrom are disclosed. The sheet material comprises a first layer of randomly interlaced fibers bonded to each other by a rewettable binder and at least one additional layer of randomly interlaced fibers bonded to each other and to the first layer by a rewettable binder. The fibers of the additional layer are laid directly on the first layer prior to application of the binder to the additional layer whereby the binder bonds the fibers of the additional layer to each other and to the first layer.