Abstract: Polymer melt material flow stream splitter devices, including runner extensions, T-splitters and Y-splitters are provided, for splitting an incoming flow stream channel for each melt material, into first and second branched flow channels of equal length which communicate with sets of first and second branched exit ports, each set in an axially aligned, spaced pattern in different peripheral surface portions of the respective splitter devices.

Abstract: A perforated plastic film is produced by forming a pattern of light absorbing material (e.g., in dot and/or circular forms) on the film and subjecting the printed film to radiant energy from a light source in order to melt the film areas covered with the light absorbing material, thus producing a corresponding plurality of perforations in the plastic film.

Abstract: A metal container comprising a seamless body and an end wall integral therewith and having on at least its interior surface a protective coating which is the reaction product of a citric acid ester utilized as a lubricant in forming the container and an after-applied synthetic resin.

Abstract: An apparatus for drawing and ironing a cup with a peripheral flange from relatively thin material into an elongated container also having a flange by moving a die and punch relative to one another and draw clamping and centering sleeve coaxial therewith and thereafter applying a bottom forming member axially relative to the die against the punch to profile shape said container bottom without the benefit of coolant flooding of said material during drawing and ironing, the improvement comprising; a die of a predetermined shape and size carried in the apparatus, a punch of a predetermined shape and size for cooperating with said die and each having surfaces which define a clearance therebetween during forming of said material; separate passages through said die means and said punch means to permit flow of coolant; valving in line with die and punch passages for independent control of the coolant flow from a supply means to said die and punch to permit regulation of the operating temperature of said die means wit

Abstract: An unbalanced polymeric film has a plurality of adjacent molecularly oriented layers. The first, second, and third layers are molecularly oriented, and are, respectively (1) polypropylene, (2) anhydride modified polypropylene and (3) a barrier layer of either ethylene vinyl alcohol or nylon or a blend of ethylene vinyl alcohol and nylon. A fourth layer is optionally oriented and serves as a heat sealable layer having good adhesion to the barrier layer. In a more sophisticated structure, the fourth layer is oriented and serves an adhesive layer between the barrier layer and a fifth sealant layer. The fifth layer is then optionally oriented. A process for making the films comprises heating the exterior surfaces of the two surface layers to a temperature between 10.degree. and 100.degree. F. below the respective heat sealing temperature of each of the respective surface layers, stretching the so-heated film, annealing the stretched film, and cooling the annealed film.

Abstract: An unbalanced multiple layer polymeric film having good interfacial adhesions has a first molecularly oriented polymeric surface layer of nylon on one surface thereof, and a second molecularly oriented polymeric surface layer of a heat sealable ethylene-based polymer or copolymer on the other surface thereof. Films are disclosed having interior functional layers of EVOH and HDPE, along with adhesive polymers selected for good interfacial adhesion after orientation of the film in the machine direction. Processes for making and orienting the films are also disclosed.

Abstract: A three layer heat shrinkable film is disclosed, along with preferred process for making it. The film comprises a first heat sealable layer of an ionomer, a second layer of a vinylidene chloride copolymer, and a third layer of a blend of an ionomer and an EVA copolymer. The EVA content is no greater than 20% of the blend by weight, and the vinyl acetate content is at least 4.5% of the blend by weight. In the preferred process, a three layer tape is coextruded and cooled, and reheated to 197.degree.-203.degree. F., and oriented in a conventional double bubble process.

Abstract: An improved flux used for the recovery of metallic aluminum from dross in a reverberatory furnace. The flux is an alloyed mixture of sodium chloride and potassium chloride in approximately equal parts by weight which has been preheated and then cooled to form an alloyed mixture. A small amount of cryolite can be added to the liquid mixture before cooling to improve the recovery of metal obtained than when the salt and potash flux mixture is used alone.

Abstract: Apparatus for unit cavity and multi-cavity, multi-layer injection molding and injection blow molding machines are provided, which, in preferred embodiments, include:Coinjection nozzle means, each for plural polymers, valve means for each nozzle, the valve means being adapted to move through a nozzle central channel to clear the nozzle channel of melt, a feed-block for each nozzle, polymer melt splitters, drive means for each valve means, a free floating runner system and a force compensation system to provide an effective pressure seal between the nozzles and the cavity block.

Abstract: A method is provided wherein an aqueous titanate chelate is applied "in-line" to non-lubricated or lubricated tinplate surfaces during metal forming operations. The method provides economical benefits in using a non-combustible solvent system and in requiring minimal energy output for application or activation of the chelate. Inks or coatings that are subsequently applied to the chelate treated surfaces show improved adhesion.

Abstract: An improved package, including an oil-containing product, includes a multiple layer packaging sheet material which has reduced sensitivity to cockling. The multiple layer sheet material includes a layer which is susceptible to being swelled when in contact with oil, giving a cockled appearance. With reference to the package structure, the sheet material also includes a layer which impedes penetration of oil, the impeding layer being between the oil-containing product and the layer which is susceptible to being swelled when in contact with oil. The impeding layer comprises polypropylene.

Abstract: In the production of metal cans, a sheet metal body plate (blank) is scored with aligned upper and lower score lines and then formed into a cylindrical single can body. Preferably the scoring is in steps; first, scoring the upper score line using a scoring roller and an anvil wheel; and, secondly, scoring the lower score line using a second scoring roller and a second anvil wheel. Then the single can bodies are conveyed by a conveyor belt and rolled over the knife edge (parting edge) of an elongated parting rail, with the parting edge aligned with the score line and with the conveyor applying pressure on each can body to part each one on the parting edge, thereby forming two can bodies from the single can body.

Abstract: This disclosure relates to a product, the process for making same from precoated metal and the tool used for making the product. The product is a concurrently drawn and ironed sanitary food can wherein the side wall thickness of the container is relatively uniform and approximately 0.001" thinner than the thickness of the starting material. The process is a concurrent multiple drawing and ironing operation wherein the diameter and the wall thickness are reduced in each of a plurality of operations. Finally, the tools used for each drawing and ironing operation have particular configurations designed to permit this concurrent forming of both the diameter and the side wall thickness.

Abstract: A plastic sheet (13) having a surface with low friction and high gloss is produced by extruding a layer of thermoplastic and pressing it while hot against the surface of a chill roller (17). The surface of the chill roller (17) is characterized by being highly polished and having minute randomly distributed depressions therein of an average depth of about 5 microns, a depth standard deviation of less than 3 microns, and an average frequency of about 3,000 per square centimeter. The thermoplastic layer may be laminated to a single or multilayer base (12) to form a finished product (21). A polyethylene surface layer will have a coefficient of friction generally less than 1.0 with respect to itself, while the surface nonetheless retains a high gloss appearance.

Abstract: A plastic sheet (13) having a surface with low friction and high gloss is produced by extruding a layer of thermoplastic and pressing it while hot against the surface of a chill roller (17). The surface of the chill roller (17) is characterized by being highly polished and having minute randomly distributed depressions therein of an average depth of about 5 microns, a depth standard deviation of less than 3 microns, and an average frequency of about 3,000 per square centimeter. The thermoplastic layer may be laminated to a single or multilayer base (12) to form a finished product (21). A polyethylene surface layer will have a coefficient of friction generally less than 1.0 with respect to itself, while the surface nonetheless retains a high gloss appearance.

Abstract: In a marking system for stamping materials such as aluminum strip, a pulse of determined energy is supplied to a solenoid, to impart a determined kinetic energy to a die. The die is guided to dissipate substantially all of this kinetic energy in the deformation of the material being stamped. The pulse of energy applied to the solenoid may be controlled by a programmable computer, programmed to control the duration of time that a current is applied to the solenoid. The computer may control a plurality of such solenoids, controlling the times and relative numbers of operation of each of the solenoids.

Abstract: A packaging film is disclosed which comprises a base sheet coated with a polycarbonate coating. The base sheet may be chosen with substantial latitude. The invention also contemplates a process for making the film.

Abstract: A drive system for a machine including a transmission for converting rotary motion into linear reciprocating motion for driving a rack and a pinion is disclosed for use in connection with moving the pinion in oscillating rotary fashion to be the input for a differential. The differential is selectably controlled to either rotate or remain fixed and permit at least one of its outputs to rotate. The result of the drive system is to either swing a member connected to the differential output which member holds a stack of disc-like objects from vertical to horizontal or alternatively to hold a plurality of such stakes in vertical position and rotate them.

Abstract: The disclosure describes a new type of pressure cylinder to provide clamping force while fabricating deep drawn metal parts. The piston is a hollow cylinder connected to the clamping pad. The drawing tools are connected to the draw ram by a rod passing through the hollow piston. This arrangement provides a smaller overall press height and an axisymmetric clamping force. In addition, the symmetry of the parts described means that the wear parts can be reversed to double their useful lives.

Abstract: A plastic body is provided for use in a container which is adapted to hold product under vacuum, without undesirable deformation of the container. The body has a curvilinear bulge at the base of its cylindrical sidewall, and the bulge is dimensioned and configured to permit its slight deflection under vacuum which, in turn, facilitates upward movement of the bottom wall of the body. These changes effect a reduction of volume within the body, thereby reducing the level of vacuum which forms therewithin. The characteristics of the body render it particularly well-suited for production in relatively small sizes, utilizing relatively rigid synthetic resinous materials. It is also especially adapted for use in connection with a metal end closure, which may be hermetically sealed thereonto.