Abstract: A pile weatherstrip has a pile of yarn ultrasonically welded to a backing strip inside a channel defined by flanges, called pile directors, which direct the pile perpendicularly with respect to the backing. A film provides a covering for the pile and is releasably attached to the flanges on the outside thereof. The covering film may have perforations therein which are located adjacent to the flanges near the upper ends of the flanges. Alternatively, a weak ultrasonic weld of the covering to the flanges, such as made at much lower energy than used to weld the pile and the backing together, provides a releasable attachment for the covering. The covering protects the pile, for example during installation in a frame which may be painted after the weatherstrip is installed. The covering can be released by being pulled off the pile director flanges after installation and painting.

Abstract: In a process for extruding a low density foam, a foamable thermoplastic elastomer such as a thermoplastic rubber is selected. The selected thermoplastic elastomer is then fed into a heated extruder barrel where it is compressed and melted by the action of a screw. A blowing agent consisting of water is introduced into the melted thermoplastic elastomer. The melted thermoplastic elastomer and the water are thoroughly mixed and then cooled to a uniform, predetermined temperature. The mixture is then forced through a die to form an extruded foam profile.

Abstract: In a process for extruding a low density foam, a foamable thermoplastic elastomer such as a thermoplastic rubber is selected. The selected thermoplastic elastomer is then fed into a heated extruder barrel where it is compressed and melted by the action of a screw. A blowing agent consisting of water is introduced into the melted thermoplastic elastomer. The melted thermoplastic elastomer and the water are thoroughly mixed and then cooled to a uniform, predetermined temperature. The mixture is then forced through a die to form an extruded foam profile.

Abstract: One embodiment of a gasket for shielding electromagnetic interference passing through a seam between first and second electrically conductive bodies includes a base for securing the gasket to the first, electrically conductive body and a multiplicity of discrete, elongate, metallized filaments projecting substantially perpendicularly from the base so that a substantial amount of the filaments contacts the second, electrically conductive body when electromagnetic interference passing through a seam between the bodies is to be shielded. The gasket further includes structure, arranged with the base, for providing an electrically conductive path for conducting electric current between the filaments and the first, electrically conductive body. In this manner, energy absorbed the shielding member as a result of the shielding of passing electromagnetic interference can be dissipated to ground through the first, electrically conductive body.