Abstract: A plating basket (10) wherein a sidewall (12) is connected to a bottom (14) by a rim (24). The basket (10) includes a support structure (38) having a hub (40) that is jointed to spokes (60) such that the structure is compatible with the rotary mechanism of commercially available dryers.

Abstract: A process for packaging normally tacky amorphous polyolefins, and other materials having similar melt viscosities, is provided. The process entails flowing a heated material into a molded polyolefin container having a minimum wall thickness of about 0.1 mm to less than 0.24 mm at a temperature above the melting point of the container, followed by slowly cooling the filled container. The process is conducted at ambient conditions without the use of cooling fluids.

Abstract: A container with improved crease-crack resistance and a method of making that type of container. The container utilizes a layer of a soft plastic on its exterior to control cracking at outward creases. When the container holds motor oil, the oil itself may plasticize the stiff material on the container's interior to preclude inward crease cracking. In this case, the stiff layer should have a sufficient thickness that an adequate amount of material remains unaffected by the oil and does not lose its rigidity or jeopardize the container's structural integrity. Where the contents do not provide the requisite improvement in inward crease cracking or would completely soften the stiff layer, then the container has a separate, soft, third layer of plastic on the interior of the container. The softness of this layer protects against inward crease cracking. It may also protect the stiff layer from softening by the bottle's contents.

Abstract: A water-proof sealing structure for an electric junction box including a main box having a first fitting portion and a water-proof covering having a second fitting portion to be mated with the first fitting portion; wherein either the first or second fitting portion is integrally formed with an elastomer-made fitting groove having a narrowed portion therein, while the other fitting portion is formed with a locking projection wall provided with a stopper; wherein the locking projection wall is suppressed by the narrowed portion when inserted into the fitting groove, forming simultaneously an air-keeping section between a top end of the locking projection wall and an innermost portion of the fitting groove.

Abstract: A roller bottle for trans-membrane co-culture of cells includes an exterior receptacle with a longitudinal axis having a first chamber surrounded by a sidewall. The exterior receptacle has a first neck at one end having an opening therethrough providing fluid access to said first chamber. The roller bottle further includes an interior container with a longitudinal axis and a second chamber, the interior container being located coaxially within the exterior receptacle. The interior container has a second neck at one end providing fluid access to the second chamber. The exterior receptacle is formed from a material that is substantially impermeable to gas and liquid and is sealed in a substantially fluid tight fashion forming the first chamber that has fluid access by the first neck. At least a portion of the interior container is formed from a microporous material.

Abstract: A reusable and collapsible container having a collapsed configuration for storage and shipment and an assembled configuration for containing a product. The container is formed from a polymeric sheet and has substantially flat panels, hinges connecting adjacent panels, and releasable fasteners on at least some of the panels for holding the panels in an assembled configuration. The sheet has opposing walls separated by longitudinally extending webs. A portion of the hinges cross the longitudinally extending webs and are formed by hot compression of at least one wall of the sheet. Another portion of the hinges are longitudinally extending and are formed by cold compression of at least one wall of the sheet.

Abstract: A method for disposing of radioactive material in a disposal area, which is accessible from the surface through a wellbore which contains a wellbore fluid. The method comprises the steps of: encapsulating the radioactive material within a container, placing the container in the wellbore, passing the container through the wellbore to the disposal area, and equalizing the differential pressure between the wellbore pressure and internal pressure within the container as the capsule descends within the wellbore, prior to the differential pressure reaching a magnitude which would exceed a design collapse rating of the container.

Abstract: A polymeric film structure having improved oxygen and moisture barrier characteristics is disclosed. The structure includes a polymeric substrate adapted to receive an oxygen barrier on one side thereof and a moisture barrier on the other side of the oxygen barrier. The oxygen barrier includes polyvinyl alcohol cross-linked with aldehyde containing cross-linking agents in the presence of a catalytic amount of an inorganic acid, preferably sulfuric acid. The moisture barrier is a metallized polymeric composite, preferably metallized oriented polypropylene.

Abstract: A food container thermoformed from co-extruded polyethylene terephthalate sheet, a portion of which contains a nucleating agent. The food container comprises an opaque or colored tray formed from nucleated polyethylene terephthalate in a crystalline state so that the tray remains rigid at elevated temperatures. The food container also comprises a substantially transparent cover formed from non-nucleated polyethylene terephthalate in an amorphous state. The food container also comprises a hinge that integrally connects the cover to the tray.

Abstract: A food container thermoformed from nucleated polyethylene terephthalate sheet. The food container comprises an opaque or colored tray formed from nucleated polyethylene terephthalate in a crystalline state so that the tray remains rigid at elevated temperatures. The food container also comprises a substantially transparent cover formed from nucleated polyethylene terephthalate in an amorphous state. The food container also comprises a hinge that connects the cover to the tray.

Abstract: A portable electric wallpaper steamer has a generator (G) including a base (1) and lid (2), both injection molded of plastic material. An elastomeric sealing ring (29) is seated in a recess in a circumferential interengagement zone between the lid and base and is held compressed by the interengagement of engagement members (24) on the lid with cooperating engagement members (39) on the base. The lid-engagement members (24) and base-engagement members (39) comprise integrally molded parts of the lid and base and one or both are resiliently deformable so that they can be brought into snap-fit engagement with each other by downward movement of the lid relative to the base to form a steam pressure tight seal. An electric heating element (6) is mounted in the base for heating water therein to generate steam. The lid includes a handle (9), filling port (10), safety valve (13) and a steam outlet port (21) connected to a wall paper steaming plate (W) by a pipe.

Abstract: A method of securing a two piece plastic nozzle and overlying screw cap closure assembly to a plastic pail cover wherein the nozzle has a cylindrical body portion which is inserted into a cover opening to form a friction fit therewith. The overlying screw cap is then rigidly supported as a sonic welding horn is brought into axial engagement with the protruding nozzle body portion. Energization of the sonic welding horn causes the nozzle body portion to soften and deform radially outwardly into a circumferentially enlarged rivet connection. Continued axial displacement of the sonic welding horn creates a plastic bond about the periphery of the rivet connection so as to close off any leakage path therearound. At the same time any radial dispersion of plastic material resulting from the bonding process is locally contained about the rivet connection periphery.

Abstract: A plastic vessel (10) for containing a hot liquid and having the capability of being placed on a hot plate, burner or the like to maintain the liquid hot includes a top portion (11) molded of a first heat resistant plastic material. A base portion (13) molded of a second plastic material being more heat resistant than the first plastic material is attached to the top portion (11) to close the same and form the container for the hot liquid. One form of attachment of the base portion (13) to the top portion (11) is the utilization of a gasket (12) preferably formulated of a mixture of the first and second plastic materials which is heated to fuse the top portion (11) to the base portion (13). A heat shield (14, 40), formed of a third plastic material which is more heat resistant than the first and second plastic materials and which can withstand the heat of direct contact with the hot plate, is attached to the bottom of the base portion (13).

Abstract: An infectious waste disposal container assembly which comprises a receptacle housing, an aperture with an elongated neck portion and an aperture closure means. The aperture of the container assembly being capable of providing access to the interior of the receptacle housing and the aperture closure means having a shape such that it can be removed from the container assembly, inverted and inserted into the elongated neck portion via the aperture such that infectious waste contained within the receptacle housing cannot escape through the aperture.

Abstract: A sharps collector comprising a container for holding, storing, and disposing syringes. The sharps collector includes a disposable receptacle and a decorative cover. The receptacle preferably has two elongated apertures and chutes associated with each aperture. The chutes are designed to guide syringes into the receptacle once the syringes pass through an aperture. The chutes also obstruct syringes which are already contained in the receptacle from protruding or re-emerging out of the receptacle. The decorative cover is reusable and fits over and attaches to the receptacle. When the cover is attached to the receptacle, it conceals the apertures and chutes of the receptacle. The cover includes an elongated aperture through which a shuttle is accessed. The shuttle directs syringes to the concealed apertures and chutes of the receptacle. The syringes to be disposed are placed in the shuttle and the shuttle is manually shifted such that a syringe is pushed towards an aperture and chute.

Abstract: A spin welding apparatus is employed for hermetically sealing seamless overpacks. The seamless overpacks are utilized, for example, for isolating corroding 55 gallon drums which contain hazardous materials. The overpacks include a receiver which contains the 55 gallon drum and a cover which is spin welded onto the receiver. The receiver and cover have circular welding surfaces which oppose one another across a horizontal plane. The welding surfaces have a composition of heat fusible plastic. During the spin welding process, the cover is rotationally driven by the spin welding apparatus while simultaneously being forced downward onto the receiver, which is held stationary. Frictional heat melts the opposing welding surfaces. After the rotational motion stops, the opposing welding surfaces cool and solidify to form a seamless weld joint. During the spin welding process, the covers are rendered susceptible to centrifugal imbalance due their large size.

Abstract: A container for holding books during transport and treatment with a liquid including a means which can be moved between a pressing position to hold the books securely during transport and a relaxed position in which the books are free to separate to facilitate penetration of the treatment liquid and the escape of moisture.

Abstract: There is provided a collapsible barrel-shaped barricade which telescopes within itself for compact storage. Particularly, a solid and heavy base is provided for stability and a series of telescoping ring members are mounted thereon; the lowest ring being mounted to the base and upper rings being concentric with the lower ring. The concentric rings are arranged to interlock by placement of a tab from an inner ring into a horizontal slot on the inside of an outer ring. This interlock operates to hold the rings in an extended position when the barricade is in use.

Abstract: The prerequisites for the injection moulding from thermoplastic material of container lids with a tear-up opening arrangement which is to function well on opening as well as on reclosing are improved through the use of a modified thermoplastic containing inert filler in a quantity of 10-15% of the weight of the mixture. Such a modified thermoplastic is manufactured by heating a thermoplastic, known in itself, e.g. polyethylene, to melting temperature with simultaneous admixture of the filler. The mixture is mechanically processed for a good distribution of the filler in the melted plastic mass which thereafter is cooled to form the modified thermoplastics.

Abstract: The invention includes a variety of adaptors for forming enclosures and other apparatus from sectioned integral containers. Each adaptor described includes suitable means such as a channel structure for attaching the adaptor to the sectioned open end of an integral container. The adaptor itself may form an enclosure with the container, or, in other embodiments, join the attached, sectioned container portion with another container sectio or other form of closure. The described adaptors are particularly designed for use with cylindrical plastic beverage container assemblies including an integral, dome bottom, cylindrically shaped container and container base piece adapted to receive and support the dome end of the container. A number of plant irrigation devices are described formed by sectioned portions of conventional integral containers and special adaptors of the invention.

Abstract: Composite materials for retort container comprising a biaxially stretched film of a copolymer of vinylidene chloride and an acrylic ester and a polypropylene film formed on one or both sides of the biaxially stretched film. On the polypropylene film may be further formed a talc-blended or odorless polypropylene film directly or on another polypropylene film. Top materials for the container comprise a biaxially stretched film of the vinylidene-acrylic ester copolymer, a sequential biaxially stretched film of nylon 6 formed on one side of the biaxially stretched film, and a heat-sealable heat-resistant plastic film formed on the other side.

Abstract: A culture vessel used for microorganism culture, cell culture, tissue culture and the like, which has features with regard to a shape of the opening neck for enabling to perform various operations such as introduction of a culture area solution and insertion of pipettes or the like. In the conventional culture vessel, the opening parts at the opening end of the neck and the connecting part joining the vessel body with the neck have been of circular shapes and they have diameters of equal dimension to provide a straight pipe configuration for the opening neck. This gives rise to the problems that a dead angle is formed for a culture area during operation.

Abstract: A molded extensible-collapsible container having a series of flutes, in the generic sense, in its side to permit the container when subjected to an external force to move to a collapsed position or to the extended position when preferably the yield point of the plastic is no greater than about 5% and it has an ASTM modulus of elasticity greater than about (6.895.times.10.sup.8 pascals) and less than about (2.758.times.10.sup.9 pascals) and preferably about (1.034.times.10.sup.9 pascals to 2.069.times.10.sup.9 pascals). The plastic of the blow molded container can be a blow moldable polyester of less than 5% elongation at yield with polyethylene terephthalate being most preferred.

Abstract: A high frequency welding method comprises providing two plastic workpieces to be welded together with respective ribs which face each other, extend to the same height and have their surfaces opposite their facing surfaces inclined such that their thicknesses decrease toward their tops, and applying high frequency vibration to the ribs by positioning a high frequency welder horn such that the bottom of an annular groove of the horn having an arcuate sectional profile is pressed against the tops of the ribs.

Abstract: A textile fabric employs a corrugated synthetic flat yarn having a plurality of filaments arranged in side-by-side relationship and being integral with adjacent filaments. The tape is corrugated tape woven or knitted with other yarns in a flat, substantially untwisted attitude. The tape is fabricated without fibrillation but controlled splitting may occur during subsequent fabric sewing or stitching operations. The fabric is particularly suited for use as geotextiles, woven intermediate bulk containers, woven explosive bags, and strapping (webbing).

Abstract: Multilayer tubular container as a means of transport and storage for chemicals, beverages, food, etc. It is provided with a tubular casing of a particular inner cross-section, the casing being composed of a first layer of a both axially and radially oriented polyethylene terephthalate and having a thickness of 50-1000 .mu.m, and of a second layer which has been shrunk onto said first layer. The polyethylene terephthalate of the first layer is heat-set into the shape of said cross-section to a degree of crystallization of at least 25%. A film-like intermediate layer is compressed between the first and the second layers, e.g., to improve the gas barrier properties. The second layer is composed of a both axially and radially oriented polyethylene terephthalate having a thickness of 75-1000 .mu.m, and is heat-set to a degree of crystallization of at least 25% on the form of the intermediate layer. This container is dimensionally stable at high temperatures, particularly sterilization temperatures.

Abstract: A plastic sealing ring is attached to a rim of a plastic container with an insert interposed between the rim and the sealing ring. By making the insert from a relatively rigid material, the insert can rigidify the sealing ring and hence the container. If the insert is made from an electrically conductive material, the insert can function to facilitate the induction welding of the sealing ring to the container. The sealing ring and insert can be formed as a unitary, composite sealing ring subassembly adapted for direct application to the rim of the container or they can be supplied as individual parts adapted to be applied to the rim of the container separately. In order to form the sealing ring subassembly, the sealing ring is molded from molten plastic. During the cooling of the sealing ring, the insert is positioned in a groove formed in the sealing ring.

Abstract: A coextruded thermoplastic sheet, with high peel strength and suitable for thermoforming into a container, the sheet including a layer of acrylonitrile-methyl acrylate copolymer to act as a gas barrier and provide rigidity, thermoformability and printability, a structural layer of polyolefin to provide a moisture barrier and chemical resistance, and an intermediate tie layer of a radial butadiene/styrene teleblock copolymer to provide a strong bond between the acrylonitrile-methyl acrylate copolymer and polyolefin notwithstanding the differences in tendencies to shrink between the two materials.

Abstract: A process for making synthetic resin structures in which the double wall element of a synthetic resin is molded with a channel open on one side of the element and into which a reinforcing body is fitted so that the walls of the channel flank this body. Each wall of the channel is provided with a row of openings, preferably extending in the longitudinal direction of the channel, the openings of each row registering with a respective groove formed in the reinforcement body. A cap or cover is molded over the open side of the channel so that portions of the synthetic resin of the cover can penetrate the openings and the grooves which can have a dovetail cross section.

Abstract: Plastic containers include a shell an open end of which is sealably closed by a closure member having a peripheral hinge portion secured to the shell and an inner expanse which may be bowed axially of the shell. The closure member is unfolding or deformable in drop testing such that sealable closure of the shell is maintained.

Abstract: A plastic paint bucket has a double-tight metal sealing ring which is crimped to the top rim of the bucket.

Abstract: An article coated with an abrasion resistant coating is disclosed in which the coating comprises a polyvinyl acetal having an hydroxyl group content, calculated as polyvinyl alcohol, of from 35 to 50 percent by weight and silicic acid, the weight ratio of silicic acid to polyvinyl acetal being from 2:1 to 4:1.

Abstract: A polystyrene box comprising a cover and a container section and having a pair of polypropylene hinges and a polypropylene latch. The container section has a sidewall having a pair of hinge slots disposed therein, and the cover has a corresponding pair of hinge slots adjacently disposed thereto. Each hinge comprises a flexible top having a pair of legs and is disposed so that one leg fits into a cover hinge slot while the other leg fits into the corresponding container section hinge slot. Each leg has a protruding blade on its end opposite the top of the hinge and each blade has an outwardly extending flange which digs into the side of the slot when the hinge is fully inserted thereby securing the hinge to the box. The latch is comprised of a cover portion and a container portion each of which is separately connected to their respective parts of the box in the same manner as the hinges. The container portion of the latch has a front leg with a knob which is disposed outside the container section.

Abstract: An overflow unit for a water heater installation has a plastic, resilient polystyrene pan with a bottom wall for receiving the bottom of the heater and a continuous side wall including inner and outer walls which diverge downwardly in a range of approximately five to fifteen degrees. A bottom edge portion of the outer wall is substantially coplanar with the bottom or outer face of the bottom wall but, preferably, extends outwardly a distance up to approximately 0.0001 inch from the outer face of the bottom wall when the pan is in a relaxed condition. Upon being placed on a supporting surface and receiving the water heater, the bottom edge portion of the outer wall is snugly and closely seated on the supporting surface. A drain coupling for receiving a drain line opens through the inner and outer walls and is in sealed engagement with the inner wall.

Abstract: A rectangularly shaped tray comprising a bottom product-supporting wall and up-standing side and end walls. The bottom product supporting wall is characterized by being elevated at its center portion, such as is provided by a quadrilateral pyramid-like bottom product-supporting wall with the apex of said quadrilateral pyramid being at the center portion of the bottom wall and at an elevation higher than the horizontal plane of the bottom of the four corners of said tray, whereby, when the commodity to be packaged is placed in the tray, the weight of said commodity presses the bottom wall of the tray downwardly resulting in the longer sidewalls of the tray being pulled inwardly.

Abstract: A scrap free process for rapidly making thermoplastic containers wherein the resultant containers can, if desired, be multilayered for vapor or gas barrier or other reasons, or be oriented for toughness and improved stress crack resistance. The containers can be formed from multilayered or homogeneous plastic sheets wherein a relatively thin thermoplastic blank is provided. This blank is lubricated, heated and forged into a desired shape preform with a predetermined lip configuration. The center portion of each said preform is maintained at a forming temperature while the peripheral portion thereof is rapidly brought below the softening point of the plastic resin. The preform is then immediately thermoformed into a container having a desired shape and size, and cooled. If desired, the preform can be forged, cooled and recovered from a subsequent thermoforming operation.

Abstract: A thermoplastic bottle has a unique combination of properties. The bottle is characterized by a very high level of molecular orientation, and possesses the properties of high impact strength, low gas permeability and excellent resistance to creep strain under tensile load. A blowing process for fabricating the bottle is also taught which features a means of substantially improving the resistance to creep strain.

Abstract: A manually controlled hand-held air inflator adaptor for use with an air compressor is disclosed which is suitable for molding as a single element and which includes an inlet port and passageway, and discharge and bleed ports and passageways in fluid-flow communication with said inlet port and passageway. The discharge port includes means for attachment to an inflator stem or the like, or the adaptor may be used without the inflator stem, such as for cleaning, etc.