Abstract: This relates to closures which are screw threaded onto container neck finishes and which are provided with tamper indicating bands connected to the closure by rupturable bridges. The closure is improved by specifically limiting the number of bridges and specifically locating the bridges relative to the starting end or ends of a related thread or threads so as to assure fracture of all bridges upon each opening of a container by unthreading the closure. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

Abstract: This relates to a blow molding machine of the type for blow molding large articles such as containers of the one gallon to five gallon size from a parison in the form of an extruded plastic material tube. The machine is of the rotary type and has a plurality of stations each carrying a mold unit of which one half is fixed and the other is mounted for radial movement between open and closed positions. The main shaft of the machine is of a large diameter and is tubular so that the necessary manifolding for gas and coolant supplies may be readily incorporated in the main shaft in an entirely different manner from that heretofore utilized. Also, among other features of the machine, is the provision of hollow spokes which serve not only to support outer mold halves for radial movement, but also serve as manifold accumulators for the necessary operating gases.

Abstract: This relates to an induction heating unit which is particularly constructed for inducing electrical energy into the periphery of a metal foil barrier layer of a closure for a container to thereby heat the closure and heat bond the closure to the container. In lieu of the customary single turn coil, there is provided a multiple turn coil which is mounted in one of two opposing U-sections of a core. The U-sections may either be formed of ferrite or be of a laminated construction. First legs of the U-sections are utilized to clamp a closure to a container while there will be an air gap between the other opposed legs of the U-sections. Heating may be controlled by either varying the air gap or by varying the ratio of electrically conductive members with insulating spacers.

Abstract: A thermoformable, multi-layer plastic sheet with gas barrier properties is disclosed having an inner gas barrier layer, a glue layer applied to either side of the gas barrier layer and layers of a polyolefin composition bonded to the glue layers. To increase the tensile strength of the sheet during heating for the purpose of thermoforming, a second polyolefin layer is bonded to at least one of the two polyolefin layers, the second polyolefin layer having a lower melt index than the layer of the polyolefin composition beneath it.

Abstract: Gaskets are formed in container closures fabricated from polyolefin resins exhibiting substantially no response to heat activation by radio frequency electrical energy by introducing a vinyl chloride plastisol containing a vinyl chloride polymer resin and a plasticizer having a loss factor in the range of 0.1-12 into the closure. The closure is preheated to 55.degree. to 100.degree. C. by conventional means and then the plastisol is fused in the closure by exposure to a field of radio frequency electrical energy.

Abstract: A coating composition and container coated with said composition comprising a water insoluble organic coating and having incorporated therein zinc oxide and an alkaline earth metal material in an amount sufficient to effect green color retention of green vegetables.

Abstract: A method of preparing a polar thermoplastic resin having improved resistance to gas permeability is disclosed wherein a blend of the resin and coarse mica flakes having an average particle size of less than about 100 mesh is prepared, the blend being prepared under mixing conditions which impart a shear force to the mica flakes sufficient to delaminate the flakes into individual platelets, substantially increasing the original aspect ratio of the flakes whereby an increase in the gas barrier properties of the resin is attained greater than that attained with fine mica flakes having an average particle size greater than about 100 mesh.

Abstract: Non-galling, low earing can stock suitable for deep drawing and wall-ironing into can bodies is prepared from continuously cast aluminum alloy strip of an inch or less in thickness. The strip material is heated to a temperature of from 950.degree. to 1150.degree. F. for a time sufficient to homogenize the alloy. The homogenized strip material is cold rolled to effect a first reduction in sheet thickness of at least 25%. The cold rolled sheet is heated to a recovery temperature of up to about 550.degree. F., and subjected to a second cold rolling to effect a reduction in thickness of up to 50%. The cold rolled sheet product is heated to the recrystallization temperature and then subjected to effect a final reduction in thickness of at least 50% of the original thickness of the sheet to impart an H19 temper to the sheet.

Abstract: A modified aluminum alloy 3004 composition comprising by weight 0.5-1.5% magnesium, 0.5-1.5% manganese, 0.1-1.0% iron, 0.1-0.5% silicon, 0.1-0.4% chromium, 0.0-0.25% zinc and 0.0 to 0.25% copper, the balance being aluminum. Webs of one inch or less in thickness formed from the alloy by continuous strip casting can be fabricated into non-galling, low earing can stock suitable for deep-drawing and ironing into high buckle strength two-piece beverage containers.

Abstract: A seal of controlled detachability between a propylene polymer, such as polypropylene, heat sealed to an enamel coated surface comprised of an epoxy resin, an aminoplant resin and an adhesion promoting amount of a carboxylated polypropylene resin, is obtained by incorporating a butene polymer such as polybutene in the enamel coating composition prior to its application to a metal surface.

Abstract: A process for improving the organoleptic properties of canned green vegetables wherein vegetables blanched with a highly alkaline solution are suspended in a brine having an alkalinity adjusted to between about 25 to about 75 milliequivalents of hydroxyl ion in a hermetically sealed container internally coated with an organic coating filled with an alkaline earth compound such as MgO, the vegetables being sterilized at 250.degree.-300.degree. F. to an F.sub.o value of at least 6 whereby the original color and flavor of the vegetables are retained.

Abstract: The natural color of canned green vegetables is retained by blanching the vegetables, prior to packing, in an aqueous solution of a metal ion selected from zinc and copper.

Abstract: Sausage casings formed from regenerated cellulose are coated on their internal surfaces with a thin layer of a vinyl acetate polymer which is effective in causing the casing to adhere to a sausage emulsion and follow the shrinkage of the sausage during curing.

Abstract: An adhesive composition for bonding polished metal surfaces to vinyl chloride polymer coated metal substrates is disclosed which is comprised of a thermoplastic vinyl chloride polymer resin, a thermosetting epoxy resin normally incompatible with the vinyl chloride polymer resin and an amount of an acrylonitrile/butadiene/styrene copolymer which imparts compatibility between the epoxy resin and the vinyl chloride polymer.

Abstract: An adhesive composition for bonding polished metal surfaces to vinyl chloride polymer coated metal substrates is disclosed which is comprised of a thermoplastic vinyl chloride polymer resin, a thermosetting epoxy resin normally incompatible with the vinyl chloride polymer resin and an amount of an acrylonitrile/butadiene/styrene copolymer which imparts compatibility between the epoxy resin and the vinyl chloride polymer.

Abstract: The susceptibility to color and flavor loss of liquid containing comestibles due to oxidative deterioration during storage is reduced by placing the comestible in the cathode compartment of an electrochemical cell in which the compartments of the cell containing the anode and cathode are separated by a cation permeable membrane and the anode compartment contains a highly dissociatable, non-oxidizable inorganic acid electrolyte, and thereafter subjecting the comestible to a high density current for a short period of time sufficient to generate hydrogen at the cathode to remove oxygen from the comestible but insufficient to effect a substantial chemical change in the comestible. The deoxidized comestible is then stored in a hermetically sealed container in which air is substantially absent.

Abstract: An adhesive composition for bonding polished metal surfaces to vinyl chloride polymer coated metal substrates is disclosed which is comprised of a thermoplastic vinyl chloride polymer resin, a thermosetting epoxy resin normally incompatible with the vinyl chloride polymer resin and an amount of an acrylonitrile/butadiene/styrene copolymer which imparts compatibility between the epoxy resin and the vinyl chloride polymer.

Abstract: A container is provided for liquid carbonated beverages having applied to the internal wall surfaces a layer of an inert, water insoluble polymeric material comprised of a predominant amount of hydrophilic groups, the presence of such hydrophilic groups in the polymer being effective to reduce carbon dioxide bubble nucleation and accompanying carbonation loss from carbonated beverages packaged therein.

Abstract: Metal containers are internally coated with a coating composition having a reduced tendency to absorb odor which deleteriously affect comestibles packaged therein, the coating being an aqueous dispersion of a vehicle comprised of a combination of heat curable thermosetting aromatic polyepoxide resin and a carboxyl containing polyester resin prepared from an aromatic polyepoxide and a mixture of polycarboxylic acids comprised of a major amount of an aliphatic dicarboxylic acid and a minor amount of an aromatic tricarboxylic acid.

Abstract: This relates to the hydrophilization of metal surfaces and/or metal oxide surfaces. In the forming of sheet metal by drawing and wall ironing methods, in the past it has been necessary to provide lubricants so as to not only protect the metal, but also to hold down friction noises. The lubricants are difficult to remove and require expensive washing processes after the forming operation. It has been found that an hydroxide of the metal involved may be readily generated on the surface so that the surface is easily wetted by water, for example, and thereby conventional lubricants are eliminated.