Abstract: Improved plastic containers and process for their production are disclosed. In one embodiment, containers are blow molded in a first hot blow mold, then reblown to a larger size in a second cold mold of larger volume than the first hot mold. Such containers have improved physical properties, particularly very high hoop yield stresses. In a second embodiment, containers are blow molded in a hot blow mold, then reblown to a larger size in a second hot blow mold. Such containers show high resistance to shrinkage and gross deformation in shape upon exposure to high temperatures.

Abstract: Disclosed is a process of making an oriented and heat set blow molded bottle of poly(ethylene terephthalate) so that the bottles resulting from the process have a density over 1.3860 cc./gm. and an onset-of-shrinkage temperature over 80.degree. C. In the process preform preheated to a temperature suitable for orientation is biaxially stretched in a blow mold and then while the hollow article walls are still in contact with the blow mold walls, the article is raised to a higher heat setting temperature in the range of 200.degree.-250.degree. C. (except for the neck) thus heat setting the bottle, and while the article is still at a shrinkage resisting pressure exceeding atmospheric cooling the article to a temperature at which it maintains its shape when not pressurized but not below 100.degree. C. It is also particularly disclosed that this cooling step can be done outside the mold.

Abstract: A method for coating an oriented polyethylene terephthalate container with a coating of polyvinylidene chloride from a water based emulsion, the coating being dried with infra-red energy and cooling air to prevent undesirable shrinkage of the container and prevent formation of a skin on the coating which would entrap water.

Abstract: There is provided a plural part freestanding receptacle assemblage for storage and handling of bulk quantities of material which comprises a plastic drum and handling means concentrically and holdingly assembled about the drum grippable by chime-handling devices to enable transportation and movement of the receptacle by such devices; the drum includes a substantially circumferentially disposed reentrant portion having an upper ledge portion disposed substantially perpendicular to the longitudinal axis of the drum and the handling means includes a lug-like, substantially circumferential, inwardly extending portion inserted into the reentrant portion of the drum, the inwardly extending portion of the handling means includes an upper shoulder portion disposed substantially parallel to and immediately below and generally in contact with the ledge portion.

Abstract: An apparatus for uniformly winding elongate sheets of punched material, typically used for grouping and packaging beverage containers, includes a reciprocating shuttle which evenly distributes the material as it is wound on a reel. The shuttle includes a plurality of adjacent sheet receiving slots which permit simultaneous reciprocation and even winding of a like plurality of sheets and a moveable elongate guide member which is moveable between a raised loading position and a lowered, retaining position. Mechanism is also included which permits adjustment of the reciprocatory stroke of the shuttle as well as of the center about which such reciprocation occurs.

Abstract: There is provided a plural part receptacle assemblage for the storage and handling of bulk quantities of material which assemblage includes a tight-head plastic drum molded as a single article to which is concentrically attached, subsequent to the formation of the drum, handling means so arranged and constructed as to be grippable about substantially the full 360.degree. circumference of the drum with steel drum chime-handling devices for transportation of the assemblage and the bulk quantities of material stored in the drum; preferably the drum or handling means, or both, include means for preventing liquid accumulation between the handling means and drum.

Abstract: The outside walls of the regenerator of a glass melting furnace is coated with a high temperature silicone elastomer. Several coats are applied in those areas of high differential pressure and low relative resistance to air flow therethrough. The cleanout panels in particular are provided with several coats.

Abstract: A method is disclosed for reducing post-molding shrinkage of a hollow oriented polyethylene terephthalate container; the method including the steps of:(1) bringing a polyethylene terephthalate parison to orientation temperature,(2) blow molding the parison to provide a biaxially oriented container with larger dimensions than desired in the final container,(3) heating the blow molded container for a time and temperature sufficient to shrink the container to the desired size whereby substantially all the time-temperature dependent shrinkage is accomplished.

Abstract: Disclosed is a process of making an oriented and heat set blow molded bottle of poly(ethylene terephthalate) so that the bottles resulting from the process have a density over 1.3860 cc./gm. and an onset-of-shrinkage temperature over 80.degree. C. In the process preform preheated to a temperature suitable for orientation is biaxially stretched in a blow mold and then while the hollow article walls are still in contact with the blow mold walls, the article is raised to a higher heat setting temperature in the range of 200.degree.-250.degree. C. (except for the neck) thus heat setting the bottle, and while the article is still at a shrinkage resisting pressure exceeding atmospheric cooling the article to a temperature at which it maintains its shape when not pressurized but not below 100.degree. C. It is also particularly disclosed that this cooling step can be done outside the mold.

Abstract: A package is disclosed comprising a rigid tray member having an upstanding peripherally located rim portion. A plurality of discrete container assemblies are within the rigid tray member. Each container assembly has a plurality of individual containers in a regular geometric array interconnected by a unitary thermoplastic carrier means. A cover shroud overlays the tray and is secured to the tray rim to complete the package.

Abstract: A conveyor for transporting containers in a vertical position along a defined path through a power adjustable, container rotating mechanism. The rotating mechanism includes a pair of elongate friction members respectively disposed laterally adjacent the defined path of travel. One of the friction members is a movable wall device and the other friction member is a static wall device. Each friction member is laterally movable by cam devices controlled by power operated linkage mechanisms.

Abstract: A thermoplastic, generally tubular parison for the blow molding of a thermoplastic container and a method and apparatus for same. The parison includes a finish or neck having a single helical thread extending less than 360.degree. about the circumference of the finish. The radius of the parison at any point on the outside surface is less than the radius through the crest of the helical thread, whereby the parison can be injection molded in an injection molding apparatus with an injection mold comprising all axially movable mold sections.

Abstract: An apparatus and method for measuring the effective support height of a base cup for a container having a convex bottom includes a preform corresponding to the container bottom which is secured to a sensing member of a linear translation indicating device. The apparatus is preferably utilized on a planar surface and the indicating device is zeroed while the preform is placed in contact with surface. The base cup is then positioned below the preform, the preform is lowered into contact with the base cup and the effective support height of the cup is read on the indicating device.

Abstract: A plural container packaged for securing together a plurality of identical containers, each said container having an open neck finish, an outstanding bead portion disposed below said finish portion, an angled shoulder portion disposed below said bead portion and an elongate hollow enlarged diameter main body portion having a closed bottom, in communication with said finish opening. The package includes a plurality of such containers, in a regular geometric array, with a unitary cover shroud overlaying each container in the array such that the upper portion of the cover shroud is subjacent to the bead portion of the containers and the lower portion of the cover shroud extends approximately to the midpoint of the container main body portion. A first container securing means interconnects each container at a point immediately subjacent to the bead portion of the container and superjacent to the cover shroud.

Abstract: Disclosed are unpressurized multiwall containers of liquid having outer and inner walls of unfoamed plastic material. The plastic container has at least two unfoamed plastic walls, each of which is separated from the next wall by a layer containing a gas or vapor wherein the gas or vapor contains less than ten volume percent oxygen gas and is not reactive with oxygen under packaging conditions. The layer or layers containing the gas can be entirely gaseous or be a foamed or cellular plastic containing, for instance, as little as thirty volume percent gas. The containers have a special utility where it is desired to minimize the permeation of oxygen from the ambient air into the inside of the container. In a particularly important embodiment of the disclosure, the outer plastic layer is supported by a paperboard or wooden container, and the inner plastic container is within the paperboard or wooden container.

Abstract: A device for mainpulating and orienting elongate tubular stock receives such stock in a horizontal position, separates and individually spaces such stock, reorients it vertically and transfers it to associated equipment. Elongate stock is manually loaded onto a horizontal bed from packing containers or other supply means unrelated to the invention. Guide wheels separate and horizontally juxtapose the stock in a single-file horizontal row. A chain conveyor then individually engages each piece of stock, and lifts and rotates it generally about one end into a vertical position. The stock is then transferred horizontally as necessary, to associated equipment. The elongate stock may be cylindrical such as glass tubes or rods or define various cross-sections such as triangular, square or polygonal.

Abstract: A pressurized fluid package comprising an oriented plastic bottle having a generally cylindrical side wall, a neck terminating in a finish or a closure at the upper end, and a hemispherical bottom wall, and a base cup of plastic material. The base cup comprises a standing ring for engaging a support surface having a generally planar contacting surface. The base includes a support ring spaced above the standing ring and having an annular surface engaging the hemispherical bottom wall. The base has an annular frustoconical supporting member extending from the inner periphery of the standing ring and inclined upwardly and inwardly to the outer periphery of the supporting ring.

Abstract: Disclosed is a method and apparatus for orientation blow molding and heat setting of a thermally crystallizable polymer wherein the orientation blow molding is effected in a relatively low mass blow mold which is enclosed within a heated, high mass mold for transferring heat to the hollow article for heat setting; thereafter the outer mold is opened and the blow mold is cooled in a variety of methods in order to cool the heat set hollow article.

Abstract: A base cup for a container includes reinforcing ribs which provide both the requisite strength and rigidity and a reduction in weight. The ribs are preferably disposed on the inner surface of the base cup for cosmetic reasons and may be arranged in various generally symmetrical radial and circumferential patterns. Ribbed base cups fabricated according to the instant invention exhibit significant weight and material reductions over prior art designs while still providing necessary stability and support to the associated container.

Abstract: The present invention relates to improving the scratch and abrasion resistance of glass surfaces, and especially the exterior surfaces of glass containers such as bottles, jars, tumblers, stemware, and the like. Hollow glassware for container use is subject to abrasive contact with similar articles as well as handling equipment in the normal processes of manufacturing, packaging, filling and shipping. This invention further relates to providing improved abrasion resistance to glass articles and particularly hollow glass containers which are treated by the present hot-end process while retaining considerable heat of formation. The articles are then able to be overcoated at a lower temperature such as by organic materials to further improve their lubricity and durability. The subject process of providing a primary coating is markedly more economical than presently known processes.