Abstract: A blown plastic container that includes a hollow plastic body, an integral blow-molded neck and an integral blow-molded finish with a radially outwardly extending blow-molded thread or bead for retaining a closure on the finish. Reinforcement is provided between the thread or bead and a ledge on the finish to prevent collapse of the finish when a closure is applied to the finish. In one form, this reinforcement includes blow-molded axial columns extending radially outwardly. In another form, the reinforcement includes geometric depressions. Preferably, the reinforcement is disposed circumferentially at equal spacing. When the container is trimmed, the finish may have an annular frustoconical radial ledge spaced form the open end of the finish. The reinforcement extends between the ledge and the lowest thread or bead, between the thread or bead, or for the full height of the finish above the ledge.

Abstract: A method of forming a wide mouth blow molded thermoplastic container comprising the steps of i) stretch blow molding from a preform, an intermediate article defining the container with the mouth being threaded and/or flanged, the mouth terminating in an accommodation element having a neck finish that supports the preform in the blow mold; ii) heat setting the intermediate article including the entire container while still in the mold, and iii) removing the intermediate article of manufacture from the mold and severing the accommodation element to produce the container, and an article when made by the method.

Abstract: A receptacle for particulate matter to be supplied to an apparatus. The receptacle includes a container, adapted to store particulate matter. The container has an opening defined therein. A substantially rigid, relatively nondeformable flange has a portion permanently connected to the container within the defined opening so as to facilitate placement and removal of the receptacle with the apparatus.

Abstract: A lightweight blow-molded plastic container providing enhanced top loading capability. The container is rectangular in elevation and plan, and has four vertically extending post corners at the juncture of front, back and side walls. The front and back walls have label mounting areas defined by upper and lower label bumpers. The bumpers extend horizontally and terminate a spaced distance from the side walls, thus allowing the vertical corners of the container to extend uninterrupted and provide maximum post strength to the container. The configuration is capable of being made from a reduced amount of plastic, yet provides enhanced top loading capability as compared with like-sized known container configurations.

Abstract: A load bearing container is provided which is made from a non-glass material and yet possesses the top load column strength of a glass container or bottle. The container includes a diagonally oriented molded ring profile composed of alternatingly outwardly protruding curved sections and inwardly curved channels which have root radii large enough to avoid accordion-like collapsing at the molded ring profile. The container includes a shoulder section having generally opposing edge profiles which are of unequal lengths. The container is suitable for hot-filling and will avoid buckling and deformation during cooling, storage, stacking, transporting, display and use.

Abstract: A plastic tube with an integral finish and a twist off tab are blow molded. The twist off tab is connected to the finish of the tube by an annular groove forming a line of weakness. The tab is formed by the closing of mold halves about an extruded parison to form a flat twist off tab connected by a thin membrane to the exterior of the finish. The tab is then blow molded to form the tube. After the mold halves are opened, the twist-off tab is trimmed to provide the finished tube. The tab is formed by a conventional blow molding process without the need of a secondary operation. A plurality of blow molded corrugations are provided between annular blow molded ribs on the finish and provide added strength to the finish to facilitate removal of the tab.

Abstract: A container dome with arch-like structures in elevation and polygon-shaped structures in plan. The arch-like structures are provided by pairs of chordal stiffening facets disposed in an endwise adjacent array extending transversely about the periphery of the dome to enhance top loading capability. Each pair of facets has an inwardly-convex chordal stiffening rib which defines a regular transverse polygon having an uneven number of sides to prevent dome ovalization. Preferably, multiple vertically-stacked tiers of facet pairs arrays are utilized with each array being radially offset from adjacent tiers.

Abstract: The top (2) of a sheet metal container (1) for the transportation and storage of liquids has a central fill opening (3) which is edged by a neck (5) which is perpendicular to the top surface (4) of the container. A plastic or metal ring (6) with an external thread (7) is pressed down against the top surface (4) by the upper edge (8) of the neck (5). The neck is swaged outwardly. The threaded ring (6) is protected against rotation by form-fit connections on the neck (5). A plastic screw cap (11) into which a disc-shaped insert (12) of special steel is pressed, is screwed onto the threaded ring (6). Between the outside edge (13) of the cap insert (12) and a ring projection (14) of the latter, an annular groove (15) for holding a gasket (16) is molded into the insert, and by this gasket (16) the screw cap (11) is sealed against the upper edge (8) of the neck (5).

Abstract: A thermoplastic container or container blank having a neck (1) with a cylindrical inner wall is positioned in a predetermined angular orientation on a carrier mandrel (10) inside the neck (1), the mandrel (10) having a mandrel body (11) and a retaining member (13) actively engaging the neck (1) to secure it to the mandrel body. The retaining member (13) is freely rotatable on the mandrel body so that the neck (1) is axially secured to the mandrel body but freely rotatable thereon. A fixed abutment (14) radially projects from the mandrel body at a point thereon which is in a predetermined angular orientation and at least partially opposite a given axial portion of the inner wall of the neck (1) held on the mandrel. A radial projection (9) is at least partially located at an angularly predetermined point on the axial portion of the inner wall of the neck (1).

Abstract: A reinforced finish is on a blow-molded container. An insert is permanently attached on the finish of a preform from which the container is blown, or directly on the finish of the blow-molded container. The insert is ring-shaped, forms a portion of the top surface of the finish, is made from a rigid plastic material, and is positioned entirely above the threads.

Abstract: A container, which may be injection molded in a single mold, includes a main body and a hollow cylindrical neck. The neck extends along a main axis and has a proximate end connected to the main body and an open distal end. The neck includes a generally cylindrical inner layer formed of a first thermoplastic material, a generally cylindrical middle layer located radially outward of the inner layer and formed of a second thermoplastic material having a greater heat resistance than the first thermoplastic material, and a generally cylindrical outer layer located radially outward of the middle layer so that the middle layer is at least partially sandwiched between the inner and outer layers. The outer layer is formed of the first thermoplastic material.

Abstract: A bottle neck structure of a synthetic resin bottle preform with a preliminarily molded synthetic resin core member embedded therein is disclosed. The resin core member has a cylindrical body, that extends the length of the wall of a bottle neck, and a flange constituting a support ring of the bottle neck. At least one external surface of the resin core member is exposed to be in contact with a mold when a bottle preform is molded. The cylindrical body has a plurality of through-holes formed in its circumferential wall to allow bottle resin to flow through and form a contiguous external and internal layer. The preform is subsequently subjected to a biaxial blow-stretch manufacturing process resulting in a finished synthetic resin bottle with a neck of the present invention.

Abstract: The present invention is directed to a blow molded article and an apparatus and method for blow molding the article. The article contemplated by the present invention includes a recessed lip. The apparatus includes two plates reciprocally movable toward and away from one another. A center ring member and a separating ring are fixedly and perpendicularly mounted on each plate. A mold half is mounted on each plate and is divided into two sections. One section is located on each side of the center ring member and is reciprocally movable toward and away from the center ring member. A first insert member is provided in each mold section in proximity to said center insert member. The first insert has a channel therein for receiving a second insert member. The second insert member is reciprocally movable in said channel and engages the center ring member.

Abstract: A plastic vessel preform includes a neck portion having an outer layer formed by an insert piece (20) which includes a thread portion (22a) and a support ring (28). The support ring (28) includes a bond reinforcing portion (36) integrally formed therein in a direction perpendicular to the axis or the preform body (34). The bond reinforcing portion (36) strengthens the radial bond in the insert piece (20) so that the mechanical strength at the neck portion (32) of the preform (30) can be greatly increased.