The present invention provides a process for modifying the surface of a polyvinyl alcohol film or fabric by applying heat and pressure to the film or fabric to increase the moisture on the surface which is held by the fabric and to coalesce the surface fibers and reduce the porosity of the surface.

A method for producing an asphaltic sheet, the method comprising of providing an asphaltic sheet; and applying expandable graphite particles to the asphaltic sheet.

A moisture vapor permeable, water impermeable composite sheet material is provided which is suitable for use as a housewrap material, and is also useful for other applications such as tarpaulins, or as covers for automobile, boats, patio furniture or the like. The composite sheet material includes a nonwoven substrate and an extrusion-coated polyolefin film layer overlying one surface of the substrate. The nonwoven substrate is comprised of polymeric fibers randomly disposed and bonded to one another to form a high tenacity nonwoven web. The nonwoven substrate has a grab tensile strength of at least 178 Newtons (40 pounds) in at least one of the machine direction (MD) or the cross-machine direction (CD). The extrusion coated polyolefin film layer is intimately bonded to the nonwoven substrate. The film layer has micropores formed therein to impart to the composite sheet material a moisture vapor transmission rate (MVTR) of at least 35 g/m.sup.2/24 hr. at 50% relative humidity and 23° C. and a hydrostatic head of at least 55 cm. In one embodiment, the nonwoven substrate comprises a spunbonded nonwoven fabric formed of randomly disposed substantially continuous polypropylene filaments. The spunbonded nonwoven fabric is an area bonded fabric in which the filaments are bonded to one another throughout the fabric at locations where the randomly disposed filaments overlie or cross one another.

The present invention provides a process for modifying the surface of a polyvinyl alcohol film or fabric by applying heat and pressure to the film or fabric to increase the moisture on the surface which is held by the fabric and to coalesce the surface fibers and reduce the porosity of the surface.

An asphaltic sheet comprising an asphaltic component including an asphalt binder and expandable graphite.

A fire protective glove includes a palm portion and a back portion. The palm portion includes a polymer impregnated layer constructed of aramid fibers, leather, or a combination thereof; and a palm moisture barrier layer that is interior to the polymer impregnated layer, the palm moisture barrier layer being constructed of polyurethane, polytetrafluroethylene, aramid fibers, or a combination thereof. The back portion includes a first back protective layer constructed of aramid fibers, leather, or a combination thereof; and a second back protective layer that is interior to the first back protective layer, the second back protective layer being constructed of aramid fibers, modacrylic, or a combination thereof.

An asphaltic sheet comprising an asphaltic component including an asphalt binder and expandable graphite.

The present invention provides a process for modifying the surface of a polyvinyl alcohol film or fabric by applying heat and pressure to the film or fabric to increase the moisture on the surface which is held by the fabric and to coalesce the surface fibers and reduce the porosity of the surface.

A method for producing an asphaltic sheet, the method comprising of providing an asphaltic sheet; and applying expandable graphite particles to the asphaltic sheet.

A fire protective glove includes a palm portion and a back portion. The palm portion includes a polymer impregnated layer constructed of aramid fibers, leather, or a combination thereof; and a palm moisture barrier layer that is interior to the polymer impregnated layer, the palm moisture barrier layer being constructed of polyurethane, polytetrafluroethylene, aramid fibers, or a combination thereof. The back portion includes a first back protective layer constructed of aramid fibers, leather, or a combination thereof; and a second back protective layer that is interior to the first back protective layer, the second back protective layer being constructed of aramid fibers, modacrylic, or a combination thereof.