Abstract: A closure member for an open end of a container includes a main body segment secured to edge portions of the container and a flap segment pivotally mounted to the main body segment. The main body segment defines a discharge port through which fluid discharges from the container; and the flap segment moves between a first position in which is covers the discharge port and a second position away from the discharge port.

Abstract: Injection molded and injection blow molded multi-layer substantially rigid plastic articles are provided, which, in preferred embodiments, include: articles having at least three layers wherein a portion of the marginal end portion of their internal layer is folded over within the marginal end portion of the side wall of the article, preferably in the flange if the article is a parison or container; the aforementioned articles wherein the folded over portion is toward the inside or the outside of the side wall; the aforementioned articles, parisons, and containers, open-ended, or closed with end closures double seamed thereto or flexible lids secured thereto by an adherent, or heat seal, or other suitable means; the aforementioned articles wherein the folded over portion and any not folded over portion of the marginal end portion of the internal layer, extends substantially uniformly into the marginal end portion of the side wall of the article, parison or container; at least five layer plastic articles

Abstract: A high temperature steam-sterilizable flexible pouch package includes a non-woven barrier web, a perforated plastic intermediate web, and an imperforate plastic upper web. Line heat seals bonding the webs form a cavity into which high temperature sterilizing steam may enter after passing through the barrier and intermediate webs. The line heat seal bonding the upper and intermediate webs is of the delamination failure type. An access opening is provided for insertion of an object to be sterilized into the cavity after which the access opening is sealed, enclosing the object in the cavity. After high temperature steam sterilizing, the package is opened by peeling apart the upper web from the intermediate web which causes a delamination failure of the line heat seal. Preferred materials enable vacuum cycle steam sterilization at a temperature of at least 270° F.

Abstract: A plastic bottle comprises a base having a chime, a dome and an annular wall extending between the chime and the dome. The annular wall extends generally parallel to a longitudinal axis of the bottle to support the dome against inverting due to internal pressure and increases the bi-axial stretching of the base during blow molding to strengthen the material of the same. A method of making the plastic bottle of the present invention is also disclosed.

Abstract: The present invention provides an end closure for a container having a central panel wall with a displaceable opening panel defined by a frangible score and a non-frangible hinge segment. A tab is attached to the panel wall by a rivet, the tab having a nose extending over a first area of the opening panel, the remainder of the opening panel which is exposed from the tab defining the second area of the opening panel. A deboss bead resides in the opening panel, formed in the second area. The deboss bead being curvilinear in shape, formed as a narrow channel in the opening panel. The narrow channel preferably being formed as a U-shaped bead with a first wall and a generally opposed second wall, with the first and second wall being joined by an arcuate intermediate segment. The end closure further has a deboss panel residing in a plane below the remainder of the panel, the deboss bead extending below the plane of the deboss panel.

Abstract: A stay-on-tab container end having a panel wall with a tab attached by a rivet and having a tear panel. The tear panel being defined by a frangible score with a first end and a second end and a non-frangible hinge segment. A second groove is formed in the panel wall with a tail portion extending from the tear panel through the hinge segment. The second groove tail portion has a reduced residual differential compared to the frangible score residual. Also the tail portion includes a curved terminal end that partially surrounds the second end of the score.

Abstract: The multilayer plastic container comprises a neck portion, a body portion, adjacent the neck portion, forming a cylindrical wall, and a bottom portion adjacent the body portion and opposite the neck portion. The cylindrical wall comprises a first layer of PET, a layer of EVOH adjacent the first layer of PET and a second layer of PET adjacent the layer of EVOH the EVOH has an average thickness which is greater near the neck portion of the container than near the bottom portion of the container.

Abstract: Multilayer film structures and packages therefrom which are particularly suited for containing organics such as organic liquids or solvents, e.g., amines, diamines, triamines, xylenes, tolene, ethoxyethanols, urethanes, or epoxies, or the like, or materials containing organics are disclosed as are methods for containing such organics. The film structures have two layer elements. The first layer element has a flexible barrier material layer and a sealant layer; the second layer element has a high barrier material layer; and when formed into a package such as a pouch the sealant layer is disposed interiorly and is used to seal the package together. Suitable materials for the high barrier material include metal foil, e.g., aluminum foil, and nylon coated on at least one side with a polyvinylidene chloride copolymer; the flexible barrier material layer is suitably nylon; and, the sealant is preferably ethylene vinyl acetate.

Abstract: A sterilizable flexible pouch package includes a non-woven barrier web, a perforated plastic intermediate web, and an imperforate plastic upper web. Line heat seals bonding the webs from a cavity into which a sterilizing steam may enter after passing through the barrier and intermediate webs. The line heat seal bonding the upper and intermediate webs is of the delamination failure type. An access opening is provided for insertion of an object to be sterilized into the cavity after which the access opening is sealed, enclosing the object in the cavity. After sterilizing, the package is opened by peeling apart the upper web from the intermediate web which causes a delamination failure of the line heat seal. Preferred materials enable steam sterilization at temperature of 270.degree. F.

Abstract: A method for slitting and sealing a lamination having a polyethylene layer and a coextruded film having a nylon.TM. layer. The improvement comprises slitting and sealing the two films with a laser generated light beam. The films are co-wound such that the coextruded film is closest to the laser. The laser slits the coextruded film first and thereafter the lamination. The polyethylene side of the lamination is positioned closest to the laser and is slit prior to other layers of the lamination. The method allows the polyethylene more time to absorb the energy from the laser and takes advantage of the efficient energy absorbing characteristics of the nylon.TM. in the coextruded film, resulting in improved slitting and sealing rates.

Abstract: An injection molding machine for simultaneously injection molding a plurality of articles each made of plural polymeric materials. The injection molding machine includes a source of a first polymeric material and a source of a second polymeric material. The injection molding machine also includes a plurality of co-injection nozzles, each of the nozzles has an associated injection cavity mold. Each of the nozzles also has a first flow channel for providing a stream of said first polymeric material to said mold and a second flow channel for providing a stream of said second polymeric material to said mold. The machine further includes a manifold for feeding the polymeric materials from their sources to each of the nozzles and each of the associated molds, such that each of the streams of the first polymeric materials flows from each nozzles into each associated mold simultaneously and each of the streams of the second polymeric materials flows from each nozzle into each associated mold simultaneously.

Abstract: A clear, multilayer polymeric film that is desirable for thermoforming applications. The film in its various embodiments include two inner layers of nylon and/or a core layer of ethylene vinyl alcohol or ethylene vinyl alcohol copolymer sandwiched between the two inner nylon layers. The film can also contain two nylon layers which are bonded together via an adhesive layer and not contain a core layer of ethylene vinyl alcohol. The film also has an outer layer of a heat sealable polymer and may also have an outer layer of nylon. The film is coextruded, blown into a tubular shape, oriented, and cooled by the method of tubular water quenching. The film has various improved physical properties over the prior art, including properties of "memory", clarity, gloss and low haze.

Abstract: A multi-layer packaging film comprising layers having varying degrees of cross-linking when subjected to electron beam (EB) radiation. The outer layer has a high degree of cross-linking to improve the adhesion, strength, toughness and heat resistance of the film and the inner layer has a low degree of cross-linking to improve the sealability. Bags made from the multiple layer films are especially useful for shrink packaging, and particularly for shrink packaging of meats having large cavities.

Abstract: The present invention provides a stay-on-tab end closure having a displaceable tear panel defined by a frangible score with a sloping segment and a non-frangible hinge segment. A curvilinear bead is formed entirely in an exposed area of the central panel formed by a void region of the tab webbing. The nose of the tab has a generally asymmetric shaped outer edge with a second portion extending further over the tear panel toward the curvilinear transition zone of the score. The invention further provides a tab with an asymmetrical thickness, with a thickened portion adjacent the second scoreline segment, and further provides a bead segment positioned under a side portion of the tab nose adjacent the second segment of the score. The present invention also provides an end with a hinge region of the tab adapted to bend at a hinge line, the hinge line intersecting the central longitudinal axis of the tab at an oblique angle.

Abstract: A multiple layer polymeric film comprising a first and second layer, the composition of said first layer comprising a blend of ethylene vinyl acetate copolymer, linear low-density polyethylene, a second ethylene vinyl acetate copolymer and slip; the composition of said second layer comprising ethylene vinyl acetate copolymer; and a third layer comprising a blend of linear low density polyethylene and low density polyethylene said second layer being disposed between said first and third layer and wherein a color concentrate may optionally and independently be present in layers one, two and three.

Abstract: The product and method of manufacturing a tab having a rivet island window and adapted to be secured to a container end, including the steps of forming a first dimple at a first end position of the window and a second dimple at a second end position of the window, formed as depressed regions of metal residing outside the central plane of the metal. The method includes punching a first blank in the first dimple and a second blank in the second dimple, and subsequently bending the edge regions around the first and second blank to form a bend of the metal away from the central plane. The central region of the window is formed between and joining the blanks, and a rivet opening is formed, adapted to receive a rivet for staking the tab to a container end.