Abstract: A closure including a container having a side wall with an attached closed end and an open end and a closure for closing the open end. The side wall of the container includes an inner wall and an outer wall at the open end and the closure includes a depending skirt which extends into the area between the inner wall and the outer wall. Three static seals are provided with a first radially extending seal defined by an end of the inner wall and an inner surface of the closure. A second static seal is defined by abutting surfaces of a pair of ridges, an outwardly extending annular ridge formed on the inner wall and an inwardly extending annular ridge formed on an inner surface of the skirt. A third static seal is formed by an inwardly facing annular surface formed on the outer wall and an outwardly facing annular surface formed on an outer surface of the skirt. A fourth static seal in the form of a labyrinth seal is provided as protection against leakage from the channel.

Abstract: A single-piece, reusable, wrap-type, multi-pack carrier for a plurality of beverage containers. The carrier is shaped to separate the containers carried thereby from contacting one another during transportation in such carerier, and comprises disengageable and re-engageable locking means to permit the locked carrier to be opened and reclosed. A preferred embodiment of such carrier is formed by vacuum forming or thermoforming a die-cut sheet of a thermoplastic material.

Abstract: A tamper resistant package is disclosed which comprises a container having a closed end, at least one side wall, and an open end defined by the side wall, the side walls having radially extending sealing surfaces, and a closure of plastic material such that the closure flexes in thin cross section. The closure has a depending annular skirt which is adapted to securely fit within the open end of the container. The depending annular skirt defines radially extending sealing surfaces for engaging the radially extending sealing surfaces of the container and for placing the container and closure under tension to secure the closure on the container. The closure is snapped into the open end of the container and is sealed under tension such that an attempt to disengage the closure from the container causes visual damage to either the closure or the container which can be seen by observing the package from the top. The tamper resistant package is especially useful for conducting urine specimen testing procedures.

Abstract: A dispensing closure valve for a container comprising a stem for attachment to the container, and stem having an annular wall defining an opening and a closure having an annular wall, a radial wall engaging the free end of said stem, a transverse wall being curved and defining a convex surface facing inwardly of the container. The closure includes a downwardly and inwardly inclined integral annular portion defining a sealing surface at the juncture of the axial wall and transverse wall. The stem has a downwardly and outwardly inclined surface engaged by the downwardly and inwardly inclined sealing surface of said closure. An actuator comprising a tab extending axially from the inner surface of the transverse wall for manipulation of the closure to flex the axial wall and the transverse wall and thereby permit the contents to flow between the wall of the stem and the wall of the closure.

Abstract: A method for forming multi-directionally oriented plastic articles by shearing a thermoplastic material in a non-linear shear pattern while the material is at a temperature conducive to orientation and further processing the material by known plastic forming techniques to form an article in which the material remains oriented. More specifically, thermoplastic material is plasticized and accumulated in an amount at least sufficient to form the article, and the material is expressed under pressure from the accumulated body to and through an orifice. The material is non-linearly sheared prior to its issuance from the orifice to induce orientation stresses into the material, and, during shearing, the material is at a temperature which is conducive to orientation.

Abstract: A carbonated beverage package comprising a container having an opening with a peripheral lip defining a free edge, and a downwardly and outwardly inclined sealing surface spaced from the free edge of the peripheral lip. A closure of plastic material, such that it will flex in thin cross section, is provided with an annular wall, a radial wall engaging the free edge of the peripheral lip of the container, and a transverse wall defining a convex surface facing inwardly of the container. The closure has a downwardly and outwardly inclined integral annular sealing surface at the juncture of the axial wall and transverse wall which engages the sealing surface of said container and places the axial wall under tension.

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 thermoplastic threaded closure for a fluid container comprises a relatively rigid, generally curvilinear dome, and an internally threaded annular skirt depending from the periphery thereof. An annular plug sealing member depends from the inside concave surface of the dome, and is constructed and arranged for a slight interference fit within an associated container finish. A plurality of circumferentially spaced venting ports may be provided through the dome, between the plug and the skirt.

Abstract: Disclosed is a closure system for a container made of flexible and resilient material comprising a lid engaging the finish of the container and an expansion means such as a toggle pressure ring pressing a sidewall of said lid outwardly against the finish of the container to lock and seal said lid on said container.

Abstract: Disclosed is a method and apparatus for forming multi-directionally oriented plastic articles by accumulating a body of plasticized thermoplastic material in an amount at least sufficient to form the desired article, and advancing the material under pressure from said body forward and through an orifice. The material is non-linearly sheared while being advanced from the body toward the orifice and prior to its issuance from the orifice to induce orientation stresses into the material, and during shearing the material is at a temperature which is conducive to orientation. The orientation stresses are frozen into the material when the material is formed to a desired configuration exteriorly of the orifice by known plastic forming techniques, such as extrusion, blow molding, injection molding, compression molding, thermoforming and the like. During such forming, additional orientation stresses may be induced in the material and superimposed upon those stresses previously introduced thereinto.

Abstract: A method for applying prefabricated parts for reinforcing, supporting, forming, reshaping or labeling to articles blow molded from a thermoplastic material. A hot parison is blown in a mold into a preform having a shape slightly smaller than the finished article. The preform is then removed from its mold and the prefabricated part is attached to the preform. The preform is then blow molded to impart the finished shape to the article and to embed the prefabricated part into the article.

Abstract: Disclosed are apparatus and a method for forming multi-directionally oriented plastic articles by shearing a thermoplastic material in a non-linear shear pattern while the material is at a temperature conducive to orientation and further processing the material by known plastic forming techniques to form an article in which the material remains oriented. More specifically, thermoplastic material is plasticized and accumulated in an amount at least sufficient to form the article, and the material is expressed under pressure from the accumulated body to and through an orifice. The material is non-linearly sheared prior to its issuance from the orifice to induce orientation stresses into the material, and, during shearing, the material is at a temperature which is conducive to orientation.

Abstract: A method for forming multi-directionally oriented plastic articles by shearing a thermoplastic material in a non-linear shear pattern while the material is at a temperature conducive to orientation and further processing the material by known plastic forming techniques to form an article in which the material remains oriented. More specifically, thermoplastic material is plasticized and accumulated in an amount at least sufficient to form the article, and the material is expressed under pressure from the accumulated body to and through an orifice. The material is non-linearly sheared prior to its issuance from the orifice to induce orientation stresses into the material, and, during shearing, the material is at a temperature which is conducive to orientation.

Abstract: An improved child resistant sifter fitment and closure for containers of harmful products includes an inverted cup-shaped body member formed of resilient plastic material and an integrally molded locking flap connected by an integral hinge to the periphery of the panel portion of the body member. The locking flap folds into a conforming recess in the top surface of the panel, and, in its folded position, all edges of the locking flap are flush with the adjacent top surfaces of the panel. Co-operating locking surfaces are provided on the flap and the body portion to retain the locking flap in its folded position, and to permit limited longitudinal movement of the locking flap relative to the panel. Dispensing openings are provided in the panel underlying the locking flap and an equal number of apertures are provided in the locking flap which are alignable with the dispensing openings by a longitudinal movement of the locking flap relative to the panel.

Abstract: A safety closure is provided for closing the open neck of containers having a bead type finish formed on such neck end. The closure comprises a unitary element molded from a resilient plastic material and having a generally horizontal circular panel portion and an integral, generally vertical peripheral flange portion. The flange portion is provided with an internally projecting rib which snaps into engagement with the groove normally provided beneath the bead of a container bead finish. In the closed position of the closure on the container, the bottom edge of the closure flange is flush with the side wall of the container neck and cannot be engaged by the fingers to pry the closure off of the container.

Abstract: An improved safety closure for containers of harmful products includes an inverted cup-shaped body member formed of resilient plastic material and an integrally molded locking flap connected by an integral hinge to the top periphery of the body member. The locking flap folds into a conforming recess in the top surface or panel of the body portion, and, in its folded position, all edges of the locking flap are flush with the adjacent surface of the panel. One or more dispensing openings are provided in the panel and sealing means are provided on the bottom of the flap to close the dispensing openings in the folded position of the locking flap. Two distinct sets of cooperating locking surfaces are provided on the flap and body portion to retain the locking flap in its folded position. The one set requires a vertically downward pressure on a specific area on the panel to release.

Abstract: A method for making a hollow plastic article having a separate full ring-shaped member bonded to the article within the blow mold. Separate halves of the ring-shaped member are inserted into respective halves of the blow mold and such member halves are joined to form a full ring when the blow mold halves are closed. A parison is blow molded within the closed mold and bonds to the ring-shaped member held in the mold.

Abstract: An improved safety closure for containers of harmful products includes an inverted cup-shaped body member formed of resilient plastic material and an integrally molded locking flap connected by an integral hinge to the top periphery of the body member. The locking flap folds into a conforming recess in the top surface of the body portion and, in its folded position, all edges of the locking flap are flush with the adjacent top surface of the body portion. Dispensing openings are provided in the top wall of the body portion and sealing means are provided on the bottom wall of the flap to close the dispensing openings in the folded position of the locking flap. Cooperating latching surfaces are provided on the flap and the body portion to retain the flap in its folded position. A portion of the annular wall of the body portion is recessed so as to permit manual inward depression of a segment of the outer wall of the body portion.

Abstract: An improved shell mold and method are provided for thermal conditioning a thermoplastic parison prior to blow molding the parison into a hollow container and especially a biaxially oriented container. The mold has an inner shell and an outer shell defining a passageway therebetween for a circulated heat transfer fluid. Heat transfer between the fluid and the parison is controlled to adjust the thermal history at different locations of the parison as it will be required by the mode of stretching and the blow out ratio at the different locations.

Abstract: A method is disclosed for reinforcing hollow articles, such as bottles, blow molded from a heated thermoplastic material. A hollow parison is preformed with concave grooves in its exterior surface and corresponding ribs on its interior surface at locations in which the finished article is to be reinforced. The parison is then blow molded into the finished article. The blowing pressure and the temperature of the thermoplastic material collapse and fuse the concave grooves to form solid reinforcement ribs located inside the article while the exterior of the article has a rib-free surface defined by the blow mold.