Abstract: The coextrusion device (20) of the present invention can be used with conventional extruders (24-26) and extrusion dies (90) for forming layered products (91) from at least two materials. It includes a manifold (21) for receiving a plurality of extruded feed materials (A, B, C) and a feedblock (22) receiving the feed materials from the manifold. The feedblock includes first and second faces (43, 52), entrance ports (40, 41, 42) in the first face corresponding to the number of feed materials, channel means (50, 60, 70) passing through the feedblock between the first and second faces directing each feed material into at least one separate profile, and exit ports (51, 61, 71) in the second face corresponding to the number of channel means, defining a first profile for each feed material.

Abstract: A process for forming sintered porous polymeric articles by the steps of sintering preforms of polymeric particles with dielectric heat, or with dielectric heat in combination with conventional heating techniques. Sintered porous polymeric articles made of rubber-modified nitrile resins in accordance with the foregoing processes are also disclosed.

Abstract: It has been discovered that nitrile barrier resin latexes containing a polyvinyl pyrrolidone compound are especially effective for coating various substrates.

Abstract: A galvanic dry cell comprising a tapered cathode bobbin disposed within and separated from a cylindrical anode by a variable thickness electrolyte paste wall separator such that the advantages of a thick paste wall separator (about 0.125 inch thick for "D" size cells) and a thin paste wall separator (about 0.08 inch thick for "D" size cells) can be obtained in a single cell construction.

Abstract: The coextrusion device (20) of the present invention can be used with conventional extruders (24-26) and extrusion dies (90) for forming layered products (91) from at least two materials. It includes a manifold (21) for receiving a plurality of extruded feed materials (A, B, C) and a feedblock (22) receiving the feed materials from the manifold. The feedblock includes first and second faces (43, 52), entrance ports (40, 41, 42) in the first face corresponding to the number of feed materials, channel means (50, 60, 70) passing through the feedblock between the first and second faces directing each feed material into at least one separate profile, and exit ports (51, 61, 71) in the second face corresponding to the number of channel means, defining a first profile for each feed material.

Abstract: An improved apparatus which allows for uniform axial stretch rate and careful temperature control in the production of biaxially oriented plastic containers having uniform wall thickness and good clarity.

Abstract: Thermoplastic web treating apparatus, particularly adapted for the fabrication of flexible bags and comprising, in combination, a web treating station along with means for intermittently advancing webs through the station. The treating station includes thermal welding or sealing apparatus with a welding bar and sealing pad combination for forming spaced seals in the web, and a cutting blade for cutting or shearing the web. The apparatus is designed to provide tension during cutting operations, and to eliminate tension prior to and during sealing operations to permit "relaxation" of the film prior to formation of the seal, as well as to break away any bond which may form between the thermoplastic web and the sealing pad from the sealing operation. This break-away of the bond is accomplished through an initial short duration reversal of the web draw rolls prior to each web advance.

Abstract: Method and apparatus for containing the molten reaction products of a reactive cladding process, such as an aluminothermic reduction cladding process, in which a refractory-lined perimeter rests on either a sand bed or a steel base. A second perimeter surrounding the inner perimeter and forming an annular space therewith is also situated on either the sand bed or the steel base. Sand placed in the annular space between the two perimeters chills any molten reaction products which escape the confines of the inner perimeter, preventing any spread of this material.