Abstract: The present invention relates to containers suitable for uses such as liquid hot-fill processes. More specifically the invention relates a containers having gas permeable vents with an integral sealing means that is externally activatable by non-mechanical means to effect hermetic sealing of the containers after filling.

Abstract: Provided are a packaging container for a microwave oven that excels in the sealing performance between a container body and lid, and that at heating/cooking by a microwave oven, maintains the internal pressure of the container for a given period of time to thereby enhance the taste of contents through steaming effect, and that thereafter, can spontaneously open with certainty from a steam releasing seal part; and an efficient process for manufacturing the packaging container. In the packaging container for microwave oven having a lid heat-sealed to the periphery of a flange part of container body made of a synthetic resin so as to attain hermetic sealing, at least one steam releasing seal part with a weakened part is disposed inside the peripheral seal part of the flange part at a position separate from the peripheral seal part.

Abstract: A method for sealing a caulk cartridge type container may include the steps of opening an end of a dispensing nozzle of the caulk cartridge type container, deforming the caulk cartridge type container so that dispensing material stored within the chalk cartridge type container flows through the end of the dispensing nozzle, positioning a dispensing sleeve on the end of the dispensing nozzle, deforming the caulk cartridge type container so that the dispensing material flows into the dispensing sleeve, curing the dispensing material within the dispensing sleeve. The curing step may cure the dispensing material only within the dispensing sleeve, and the dispensing nozzle may be tapered. The dispensing sleeve may form a friction fit with the dispensing nozzle, the dispensing sleeve may be deformable. The dispensing sleeve may be expandable, and the dispensing sleeve may be rigid.

Abstract: A method for hot-filling and closing a polymer container is disclosed in which one of the closure for the container and the head space area of the container is provided with a hole covered with a hydrophobic air permeable membrane. The container is then filled with a hot liquid and the filled container is closed but for the air permeable component. The filled container is then cooled with the pressure between the interior of the container and the ambient pressure being equalized due to the air permeable membrane. Subsequent to cooling, an air-tight seal is provided over the membrane-covered hole. An associated container and closure cap is also disclosed.

Abstract: A constructional unit has a frame and a cover. The frame and the cover are formed of materials with different coefficients of thermal expansion. A plurality of spacers is arranged between the frame and the cover and defines a gap therebetween. An adhesive is provided in the gap to attach the frame to the cover and simultaneously seal the gap.

Abstract: A straw (1) for the conservation of small quantities of substances, in particular biological substances, having a segment of tube provided inside one end with a stopper including gel powder, characterized in that a proportion of the gel powder is replaced with dispersed nonabsorbent material, the stopper thus having a mixture of gel powder and dispersed nonabsorbent material.

Abstract: A straw (1) for the conservation of small quantities of substances, in particular biological substances, the straw having a segment of tube (2) provided, inside one end, with a stopper (3) including gel powder, characterized in that the straw stopper includes a thermoplastics material core (4) sheathed with filaments constituting a sheath (5). The straw of the invention absorbs only a very small amount of the liquid contained therein.

Abstract: The package is closed by a lid and it is fitted with a valve fixed over an opening zone of section greater than 10 mm2, and preferably lying in the range 30 mm2 to 50 mm2, leading to the inside of the package and formed through said lid. This opening zone is either an orifice formed through a flat lid, or else a hollow chamber itself pierced by a vent orifice of small size. The valve comprises solely a flexible sheet extending over the opening zone together with a sealing compound disposed between the flexible sheet and the lid. The sealing compound is solid at ambient temperature and it passes to a non-sticky liquid state when its temperature is raised. During heat treatment, the valve opens and closes in a succession of venting sequences.

Abstract: An evacuated package with highly reliable vacuum-sealing and a method for producing an evacuated package with the evacuatable package. A lid portion is joined onto a substrate with an element accommodated in an evacuated space formed by the substrate and the lid portion. A connecting hole in the lid portion extends from the space to the top face of the lid portion. A metal film is formed around the complete peripheral region of the opening of the connecting hole, and a thermo-melting material is joined to the metal film to close the opening of the connecting hole so as to seal the element in the evacuated space. Before closing the opening of the connecting hole with the thermo-melting material, the space is evacuated, and simultaneously, the thermo-melting material is melted by heat and left until completely degassed in a vacuum.

Abstract: Closure membrane for containers having an outer film and inner film with a joining layer and a sealing seam zone between these two films. At least one space free of a bonding layer is provided within the sealing seam zone between the outer film and the inner film and, within the limits of this non-bonded space, the outer film and the inner film each feature at least one opening, and a reservoir of material that softens under the influence of heat is provided in the non-bonded space between the outer film and the inner film. The openings in the inner film and the openings in the outer film are connected to enable the passage of a fluid such as a gas from the interior of the container to the surrounding atmosphere. On application of heat to the closure membrane e.g. during a sterilization process, the openings in the inner film and the outer film are closed off as a result of softening of the material that softens under the influence of heat.

Abstract: A can is formed by an overall cylindrical body with a nailed bottom wall and presenting on its superior part and close to an aperture thereof a round fillet which is outwardly turned. The closure of the can is by a metallic, easy-opening lid, formed essentially by a circular panel with a short descending skirt which is provided with a narrow peripheral fillet. The lid includes a sealing gasket on its internal surface and presenting, in the middle of its panel, a circular basin-shaped depression with a central hollow which is closed by a resinous, thermoplastic, detachable seal. The present improvements provide a new configuration for the superior part of the can body, by which the referred skirt of the lid and its respective fillet are inwardly spaced in relation to the side wall of the cylindrical body of the can, in such a way to eliminate any possibility of mounting or overlapping of the peripheral fillets of adjacent cans, whenever the cans are grouped or placed side by side.

Abstract: The invention provides an improved heat seal structure for electronic devices. A heat seal structure comprises a base of synthetic resin formed integrally with an outwardly extending projection, with a gas vent running through the base and projection, the gas vent being sealed off by melting the projection, the improvement that the gas vent is configured generally in the shape of the letter V or Y bifurcating in the outward direction. In another embodiment, the projection has an annular extension disposed on the outward side of the base and adapted to be melted for a double seal effect. In another version of the structure, heat-sealing is performed with a sealing member or composition interposed in the gas vent. In still further embodiments, heat sealing is performed using a sealing member melting at a temperature below the melting point of the resin forming the base.

Abstract: Hollow body made of metal or plastic with at least two axial chambers with a separation wall therebetween and with a watertight closure including a cap provided with filling and venting openings this cap having stoppers positively insertable in each chamber of the hollow body, with a piston plate filling the cross section of the respective chambers with a hollow spacing being present above these stoppers, and in connection with which the hollow space present between the piston plate and the cap is filled with an elastic permanently filling medium preferably based on plastic, and in the cap, provision is made for at least one overflow duct for the filling medium such duct in each case connecting one chamber with the other chamber by flowing above the top end of the separation wall.

Abstract: A ventable container comprises a body with a lip hermetically sealed by a film. A hole is provided in the lip of the container and a layer of hot melt adhesive disposed around the hole adhesively seals the film across the hole. When the container and the product are heat processed, the film flexes away from the tray, and the hot melt adhesive layer softens and releases the film for venting of the container. Upon cooling, the film once again bonds to the hot melt adhesive and seals the container.

Abstract: Vacuum-sealed container, including contents and having an upper part and an element integral with the upper part, a housing being defined by the upper part and by the element, containing a solid substance having a melting point between 65.degree. and 150.degree. and including a first orifice communicating with the container and a second orifice communicating with the exterior closed by the solid substance.

Abstract: A twin-chamber container which includes an outer plastic container with a valve mounted thereon and an inner collapsible container mounted in communication with the valve. A space between the containers is pressurized to collapse the inner container when the valve is opened for permitting the dispensing of material from the inner container. A flowable resin is located in the space between the containers where it hardens at the area of the opening in the outer container having the valve arrangement for forming a seal.

Abstract: Fail safe externally-applied releasible locks and internally-disposed seals for capped centrifuge containers, cryogenic vials and the like to insure closure integrity against specimen loss in whole or in part and contamination, the containers with cap being suitable for use in centrifuging, boiling and freezing of liquid specimens and during shipping.

Abstract: A composite material and metal canister has a cylindrical corrosion resistant metal shell and a composite material bulkhead within the shell which provides corrosion resistance and minimal weight coupled with the ability to withstand high internal pressures and bending stresses. The metal shell and the composite bulkhead are joined by a circumferential compression exerted on the shell by an external ring of shape memory material to produce a fluid-tight seal therebetween the shell and an adjacent bulkhead. A pair of composite material bulkheads and a pair of shape memory material rings can be used to seal both ends of the shell by locating an inner bulkhead and an external ring at respective ends of the shell.

Abstract: An improved closure for sealing the paint drain holes of a vehicle body, and a tool and method of use therefor, are disclosed. The closure takes the form of a one-piece sheet metal plug of inverted hat-shaped configuration having a peripheral flange with a thermoplastic sealant ring located beneath the flange to form a hermetic seal about the opening of the vehicle body. In use, the closure is supported, preferably magneticlly, by the head of an insertion tool and is directed by that tool into a floor pan opening or other panel opening of a vehicle body. Depending on the shape of the panel opening, the plug is then temporarily secured in place, with the sealant ring clamped between the flange of the plug and the body panel, either by a partial turn of the plug or by a tool with cam-driven dimpling elements that are forced outwardly within the cavity of the plug to produce a plurality of external enlargments or nubs.

Abstract: The method for closing and sealing the opening of a wall of a container includes the steps of: providing the opening with a counterbore; inserting a first plug member into said opening in a fluid tight manner to establish a first seal; inserting a second plug member into said counterbore and above said first plug member and said opening; and fixing and sealing said second plug member to said wall around said counterbore so that a fluid tight second seal is formed between said second plug member and said wall thereby to provide a double seal for preventing leakage of fluid material from said container through said opening.The fluid tight closure assembly is adapted to provide a fluid tight closure for closing and sealing the opening in the wall of the container having fluid material therein. The closure assembly includes a first plug member which is inserted into the opening in the wall of the container in a fluid tight manner to establish a first seal, the opening being provided with a counterbore.

Abstract: A sealed container (10) of metal material is filled with powdered metal through a fill passageway (14) and sealed with a steel ball (24) forced into the fill passageway (14) of the container (10) while the container (10) is under a vacuum environment. Thereafter, a second cylindrical sealing plug (32) is forced into the fill passageway (14) to engage the first spherical sealing plug (24) and has a gas passageway (34) therein for allowing the escape of gases between the two plugs as the second plug (34) is forced into the fill passageway (14). The second cylindrical sealing plug is then welded to the container (10) about the upper periphery thereof and the gas hole (34) is sealed by welding so that the cavity (12) remains under a vacuum during the hot consolidating process wherein the container (10) is heated and subjected to pressure which is hydrostatically transmitted by the container to the powder within the cavity (12).

Abstract: A safety blow-out vent closure for galvanic cells, such as nonaqueous oxyhalide cells, which comprises the employment of a conductive tubular member secured to the cell's housing and surrounding a vent orifice in the cell's housing and wherein a deformable member is force-fitted in said vent orifice and adapted to at least partially be ejected from the vent orifice upon the build up of a predetermined internal gas pressure within the cell. The invention is also directed to a method for assembling an electrochemical cell with the above-described safety vent closure.

Abstract: A high-pressure gas cartridge is formed by a metallic container (11) having a neck portion (11a) defining a mouth, a safety closure (12) sealingly closing the mouth, and a quantity of fluid under pressure stored in the container. The closure (12) comprises an inner base layer (14) of a metal formed therein with a pressure relief through-hole (13) and welded to the container neck portion (11a) around the mouth, an outer layer (16) of a corrosion-resistant metal thinner than the inner base layer and an intermediate layer of solder (15) sandwiched between the inner and outer layers (14 and 16) to sealingly secure them together so that the pressure relief through-hole (13) is closed by the thinner outer layer (16). The part of the outer layer (16) facing the pressure relief through-hole (13) is rupturable when the gaseous pressure in the cartridge is raised to an unduly high level.

Abstract: A plug for sealing an aperture in a panel includes a body portion adapted to close the aperture, a flange portion adapted to overlie an upper surface region adjacent the aperture, one or more insert portions adapted for insertion through the panel in contact or close adjacency to the edge surface of the aperture, and a body of sealant material in the form of a ring in contact with the under surface of the flange portion. The sealant material has the property of flowing when heated to an operating temperature lower than the melting point of the plug material, and the insert portion or portions of the plug and the body of sealant are formed so as to cause at least part of the sealant, upon being heated, to flow and adhere between the edge surface of the panel aperture and at least part of an insert portion.

Abstract: A hermetically sealed high pressure gas container comprising a high stren chamber for confining the gas and a check valve fitted on and soldered to a boss formed integral with the chamber. The check valve serves as a temporary seal and permits the chamber to be charged with gas under atmospheric conditions. After charging, the inlet port of the check valve is soldered closed to provide a hermetic seal.

Abstract: Porosity or other types of small leaks in metallic vessels designed to hold fluids under pressure or partial vacuum are repaired by: (1) sealing the chamber of the vessel, (2) introducing (preferably inert) gas at high pressure into the chamber, (3) immersing the vessel in a liquid (water) bath to locate and mark the leak(s), (4) mechanically cleaning the leak areas(s) while the gas pressure is maintained, (5) releasing the gas pressure and drawing a high partial vacuum in the chamber, (6) applying solvent to the leak area(s) to be suction-drawn through, and to clean, the leak(s), (7) while maintaining the partial vacuum, applying a liquid epoxy cement filled with a powdered metal compatible with that of the vessel, and (8) promptly heating the repaired area(s) to a moderate temperature and then releasing the vacuum. The repair will set in a few minutes and cure in several hours. The repair area(s) can be lightly abrasion-cleaned to remove any excess cement.

Abstract: A sealed capsule, for example a locking capsule, filled with liquid or other viscous material, in particular a liquid pharmaceutical preparation; and a method for the production of a sealed capsule.

Abstract: A sulphur-burning and gaseous products absorption system incorporating control means to establish generation of sulphur dioxide at a rate which is compatible with the capacity of absorption means for absorption of the gases by water, together with controls which make the system fail-safe even when unattended. In order to provide an absorption efficiency compatible with clean air standards, a unique absorption tower is provided, together with pre-cooling means further to improve the absorption tower efficiency. Further, the control efficiency and the purity of the product are improved by ebullition control. A unique joint is provided for sealing the sulphur-burning tower against undesirable leakage which also enables this tower readily to be disassembled for maintenance and repair.