Abstract: A method for producing thermoplastic tubular containers having a tubular wall section, open neck, and integral sealed bottom where a thermoplastic disc, is sealed to the inner wall of the tubular wall section, and the disc, while in a moldable state, is formed into a bottom wall by application of either a vacuum to the exterior surface of the disc or a fluid pressure to the interior of the tubular wall section, or both, to mold the disc in a mold cavity to a desired shape. A supporting sleeve surrounds the tubular wall section during application of the fluid pressure. Thermoplastic containers can be formed from a single thermoplastic material or from laminates, such as a laminate material containing an oxygen impermeable layer.

Abstract: A tamper-evident container assembly comprises a container and a cap. The container has a dispensing end that includes an opening through which the contents of the container can be dispensed, a threaded surface, and a frangible tab extending outwardly from the threaded surface. The cap is internally threaded with the threads of the cap being complementary to those of the threaded surface of the dispensing end of the container and being formed prior to the cap being placed on the dispensing end of the container. The cap has a vertical notch therein extending from the lower edge thereof of a size sufficient to receive at least a portion of the tab so that the tab is readily visible therethrough. The cap is initially placed axially over the dispensing end of the container so that the tab is received within the notch in the cap.The cap can not be initially removed from the container without separating at least a portion of the tab from the threaded surface of the dispensing end of the container.

Abstract: A two-part closure assembly for a container includes a spout and a measuring cup. The spout has an outer annular ring, a liquid-dispensing component disposed within an upper portion of the annular ring and a passageway therethrough adapted for fluid flow communication with a liquid held in the container. The annular ring has an inner surface which has an annular groove in the upper portion of the ring, an annular recess in the lower portion of the ring, and means in the lower portion to engage a container. The cup has a base, and a sidewall extending upwardly from the base to define a cavity into which a liquid can be poured. An annular flange, extending outwardly from the outer surface of the sidewall of the cup, is alternately releasably engageable within the annular groove in the inner surface of the annular ring of the spout to envelop the liquid-dispensing component of the spout and within the annular recess in the inner surface to be disposed within the liquid-dispensing component.

Abstract: A unit dose dispensing collapsible tube adapted to dispense a viscous liquid therefrom includes a collapsible tube portion and a unit dose dispenser. The unit dose dispenser includes a cap member on the collapsible tube portion, and a closure element connected to the cap member. The cap member has an opening therein to provide a path of flow for the viscous liquid in the collapsible tube portion from the collapsible tube portion to the unit dose dispenser, and an indentation therein to define a unit dose-measuring section adapted to hold a unit dose of a viscous liquid. The closure element has a lower surface with a configuration complementary to the bottom surface of the unit dose-measuring section of the cap member and a passageway therethrough in fluid flow communication with the viscous liquid in the collapsible tube portion and the unit dose-measuring section.

Abstract: The apparatus includes a crosshead and die assembly for the extrusion of polymeric resins and the like into tubular shapes, for example, of single or multiple layers. A crosshead body has a side fed resin inlet orifice which communicates with a first resin distribution channel extending 180.degree. around an inner mandrel, the first channels having gate orifices at the ends thereof. The gate orifices feed heated resin to a second resin distribution channel which extends 360.degree. around the mandrel and communicates with a first restrictive annular opening which also extends 360.degree. around the mandrel. The first restrictive annular opening feeds resin to a third resin distribution channel which also is formed 360.degree. around the mandrel. A second restrictive annular opening communicates with the third resin distribution channel 360.degree. around its circumference and feeds the molten resin or the like to an annular opening formed between the inner mandrel and the crosshead body.

Abstract: A machine and a method for density packing of cylindrical plastic objects such as caps in layers in rectangular containers. The machine includes an elongated table and a vertical transfer mechanism for the plastic objects located at one end of the table. A loading mechanism is provided at the opposite end of the table to form a row at a time of plastic objects on the table. A pusher bar is provided to move each individual row of plastic objects along the table to an assembly area where a matrix of plastic objects is formed. A second pusher bar is provided to move the assembled matrix of plastic objects to a position under the vertical transfer mechanism.

Abstract: An integral seal member is formed across the outlet in the neck of a tamper evident, thermoplastic container by adding to the thermoplastic material such as polyethylene, 3% to 16%, and preferably about 8% by weight, of an anhydrous solid inorganic particulate additive such as an anhydrous siliceous material or calcium carbonate so that the material becomes brittle enough that the seal member tears cleanly from the neck within the confines of an undercut at the interface between the seal member and neck. Torque is applied to the seal member by providing in the top of a conventional screw cap which forms a resealing closure for the container once opened, a recess with serrations which, when the cap is removed and turned upside down, engage serrations on the peripheral edge of the seal.