Abstract: A method of attaching a metal end (7) to a metal container body (6) in order to close an opening in the body, wherein the body (6) has a curled lip at least partially surrounding the opening and the end (7) has an upstanding lip extending at least partially around a periphery thereof. The method comprises locating the end (7) within the body (6) at or near said opening, bringing a curling tool (8) into contact with said upstanding lip of the end (7) and applying a force to that lip, via the curling tool (8), in order to curl the upstanding lip around the curled lip of the body (6) to form interlocking curls.

Abstract: A fuel tank comprises an upper-half tank body (7) and a lower-half tank body (8) which are made of bowl-shaped steel plates and which integrally include a flange (7f) and a flange (8f) in their peripheral edges, respectively, the flanges (7f, 8f) being superposed on and liquid-tightly connected to each other. The flanges (7f, 8f) are connected together by crimping into a roll shape to form an annular thick-walled connection (12), and an annular reinforcing rib (7r, 8r) leading to the connection (12) is formed at least in one of the upper-half and lower-half tank bodies (7, 8). Thus, it is possible to provide a fuel tank in which a sufficient strength can be imparted to portions around a flange connection, without particularly increasing the thickness of a steel plate.

Abstract: There is disclosed herein a can end (10) for a can for pressurized contents, the can end being configured to be joined by a peripheral annular joining portion (24,26) to one axial end of a can body of the can and having an outer side arranged to face outwardly from the can and an inner side arranged to face inwardly into the can, the can end comprising: a central panel (18); a panel wall (20) annularly surrounding the central panel and extending axially inwardly and radially outwardly from the central panel; an annular chuck wall structure (12, 14, 50) extending radially- and axially-inwardly from the joining portion; and an annular bead (16) which is connected between a radially outer edge (38) of the panel wall and a radially inner edge (50e) of the chuck wall structure and which is concave with respect to the outer side of the can end and extends at least partially radially outwardly with respect to the radially inner edge of the chuck wall structure, wherein wall portions adjacent inner and outer ends of

Abstract: A can, and device and method for producing same, includes two circular end elements forming a base and lid. The can further includes a sleeve which has fold lines forming edges, the can sleeve having a circular cross-sectional area at both ends and a polygonal-sectional area in its central region. The polygonal cross-sectional area in the central region is at most decagonal.

Abstract: The present invention provides a container, a lid body and a method of seaming a container, in which the influence of a load at the time of seaming can be made as small as possible, in the container having a seaming flange portion and a seaming curl portion notched. In a container of a structure in which a seaming flange portion formed at an open end portion of a container body, and a seaming curl portion formed on a periphery of a bottom lid are seamed to be joined to each other, and in which a notch is formed in at least one of the seaming curl portion and the seaming flange portion, a short and small curl portion in which a width of protrusion of the seaming curl portion is partially short is formed in at least one of circumferentially opposite sides of the notched portion.

Abstract: A can seaming apparatus and methods of forming a seam on a can and lid assembly is disclosed. The apparatus comprises one or more seaming arms pivotably attached to a shaft, a seam roller attached to one end of each seaming arm and a cam system. The cam system comprises one or more cams associated with the end of each seaming arm opposite the seam roller. Force is transferred to each seaming arm through rotation of the one or more cams. The seaming arm then pivots and moves the associated roller into a seaming area of a can and lid assembly to create a seam.

Abstract: The container has a tubular body having a peripheral lateral wall provided with an upper end portion and a lower end portion defining an upper retention hook and a lower retention hook to which is double-seamed a lower end wall. An upper end wall is conformed to incorporate a peripheral upper skirt presenting an end edge defining an inverted U shaped upper closure hook to be seated onto the upper retention hook sandwiching an elastic sealing element therebetween. The upper closure hook and the upper retention hook and also a portion of the peripheral upper skirt and a confronting region of the upper end portion are deformed for seaming the upper closure hook onto the upper retention hook and to form, respectively, a retention rib and a retention groove which tightly fits the retention rib.

Abstract: A chuck-knockout assembly for seaming a can end onto a can body to form a seamed container is disclosed. The chuck-knockout assembly may include an upper chuck body and a lower chuck body. The upper chuck body may include a first drive surface and may be rotatably coupled to a seaming machine frame. The lower chuck body may include a second drive surface and may be longitudinally moveable relative to the upper chuck body. The second drive surface may be configured to engage a periphery of the can end during seaming and disengagement of the container.

Abstract: A can assembly includes a can body, and a cap that is seamed to the can body, and a bag. The bag, which may be formed by a thermoforming process, includes a thickened portion as part of a peripheral flange that terminates in a bulb. A throat that receives the bulb is formed by necks on the body and cap such that the bulb is spaced apart from the seam. A constriction formed by the neck radially inboard from the bulb receives the thickened portion of the bag. The process for forming the can assembly includes forming the seam and thermoforming a billet into the bag. At least part of the flange is formed between matched portions of mold flanges.

Abstract: A can end and can body are seamed to each other using a seaming roller, seaming chuck and a laser fusing the peripheral portion of the can end to the can body. Laser seaming allows less metal to be used in the can end and can body. The can end and can body seam is further reinforced in order to ensure that the can is capable of withstanding internal pressures. The reinforcing techniques include crimping the seam with one or more crimping rollers, reforming the seam so as to incline the seam towards a central axis extending through the center of the can end and can body, and using multiple laser welds spaced apart from each other in the vicinity of the seam.

Abstract: An apparatus for monitoring the quality of a double seam used in can manufacture, or can filling, to seam a can end (2) onto a can body (1). The apparatus uses a device (41) for measuring the strain/force applied by the lifter cam (10) so as to provide information such as first operation seam quality, gross seam defects and machine condition.

Abstract: A rotary seamer (1) comprises a seaming turret (2), a seaming station pivotally associated to the seaming turret (2) to set in rotation around its own axis (8) a container (6) to be seamed, a shaft (11) having a first end (13) hinged in the seaming turret (2), a seaming block (9) also called lever, defining a cavity (15) with longitudinal development, shaped complementarily relative to a second end (14) of the shaft (11) in such a way that it can be coupled thereto by inserting the shaft (11) into the cavity (15), and means (16) for anchoring transversely the seaming block (9) to the shaft (11), acting in a predetermined transverse direction (17) in such a way as to create at least one contact surface (20) between shaft (11) and cavity (15), said second end (14) of the shaft (11) and said cavity (15) being so shaped that said contact surface (20) has at least one oblique portion relative to the direction (17) in which said means (16) act.

Abstract: A method for configuration of an outwardly curled portion formed on an opening portion of a metal can, in which both inner and outer faces of a metal sheet forming at least around the opening portion are covered with a resin film, in which the curled portion formed above an inclined face by curling an upper end of a trim end portion so as to confine it inside of the curled portion, as being squeezed in the can radius direction so as to contact a lower end thereof with the inclined face, and in which the metal sheet layers are folded in the can radius direction via the resin films except around both upper and lower ends of the curled portion. Accordingly, the trim end portion of in the curled portion can be prevented from getting rusty, and deterioration in the appearance of the curled portion can be avoided. Moreover, the strength of the curled portion is enhanced so that the resistance against the deformation is improved.

Abstract: The present invention discloses a container comprising a circular end wall, a peripheral body wall, and an annular rolled end seam. A channel is created in the rolled end seam and is in communication with the interior of the container. A one-way valve forms a seal between the rolled end seam and an outer surface of the body wall. The one-way valve allows gases from the interior of the container to escape from the container during packaging.

Abstract: A seaming apparatus and method wherein a composite container with a metal end loosely placed thereon is supported on a lifting plate in a vacuum chamber, air is evacuated from the chamber, the lifting plate is raised to engage the metal end with a magnetic seaming chuck, the lifting plate is then lowered to lower the container (optionally aided by one or more magnets in the lifting plate) so as to produce a gap between the metal end and the container, an inert gas is introduced into the chamber, the lifting plate is then raised to engage the container with the metal end, and the metal end is seamed onto the container.

Abstract: A container (1) is provided with a tear-off lid (2) having a take out opening covered by a tear-off foil (25). The cut edge (3) of the take out opening is bent back into the chuck wall (34) area. By this the bare cut edge is protected by the connection of lid and container body. This connection can be provided by a seaming connection.

Abstract: An end member for a container having a circumferential sidewall, the end member having a peripheral seaming edge adapted to be integrally connected to the sidewall, and having a central panel wall with a means for opening a frangible panel segment of the panel wall is claimed. The end member comprises a deboss panel recessed in the central panel. The deboss panel has first and second spaced apart end portions joined by first and second sidewalls. The first spaced apart end portion has an apex and first and second arcuate portions. A distance between the first and second arcuate portions is defined by a plurality of progressively increasing secant lengths located in spaced relation from the apex. A score groove is located within the deboss panel defining an outer perimeter of the frangible panel segment. The score groove has a first end and a second end joined to the first end by a curvilinear segment. The first end and the second end are separated by a generally linear hinge segment of the central panel wall.

Abstract: Seaming apparatus and method for seaming ends to cans are described. The seaming apparatus includes a seaming chuck received by the can end. The chuck includes an anvil portion and a peripheral upper anvil wall. The upper anvil wall is inclined at an angle ? of greater than or equal to 6 degrees. The seaming apparatus also includes a seaming roll having a seaming surface for engaging the peripheral curl of the can end in a seaming operation to compress the peripheral curl against the peripheral flange and the peripheral upper anvil wall of the seaming chuck. The seaming surface of the seaming roll is inclined relative to the longitudinal axis by an angle ?. The value of ? is selected to be greater than about 4 degrees, and more preferably from between about 8 and about 14 degrees. Additionally, the value of ? bears a close approximate relationship to the value of ?, and in particular the value of angle ?=?±up to about 4 degrees.

Abstract: A can end comprising a peripheral cover hook, a chuck wall dependent from a first point on the interior of the cover hook, an outwardly concave annular reinforcing bead extending radially inwards from a second point on the interior of the chuck wall, and a central panel supported by an inner portion of the reinforcing bead, characterized in that, a line connecting the first point and the second point is inclined to an axis perpendicular to the exterior of the central panel at an angle between 30° and 60°.

Abstract: A double seam forming apparatus for applying end units to can bodies includes a can seamer (12) with a seaming cam (46). Seaming cam (46) includes a high dwell portion (56) which deforms responsive to force encounterred by tooling during forming of a can seam. A reinforcing pin (72) limits deformation of the high dwell portion to prevent damage. The high dwell portion of the cam includes a force sensor (20) which generates a signal responsive to strain of the high dwell portion due to applied force. The apparatus further includes a monitor apparatus (28). The monitor apparatus includes a controller (30) which includes a processor and a data store (32), and a host station (38). The monitor apparatus is operative to identify seam fault conditions and to store data concerning seamer conditions. The monitor apparatus also operates a can ejector (26) to divert cans identified as having defective seams.

Abstract: A preferred embodiment of the disclosed can lid has a center panel having a central axis that is perpendicular to a diameter of the outer rim, or peripheral curl portion, of the can lid, an annular countersink surrounding the center panel, an arcuate portion extending radially outward from the annular countersink, a step portion extending radially upward and outward from the arcuate portion, a first transitional portion extending radially outward from the step portion, a second transitional portion extending radially outward and upward from the first transitional portion, and a peripheral curl portion extending outwardly from the second transitional portion.

Abstract: For the manufacture of a ring part out of a flat sheet-metal part to form a lid for a lid of a can. A hot-sealable coating is provided on one side of the sheet-metal part which is then shaped into a cylindrical tube with the coating being on the inside. The axially extending edges of the tube are joined together to form a butt-joint and the inside surface thereof pressed against a cooling plate. A butt-joint welding seam is then created by means of a laser jet. The tube is separated into equal length tube sections and each is conically enlarged at one end. The other end of each tube section is bent radially inwardly to form a bearing surface for a tear-off foil. By flanging the conically enlarged end, an annular flange is created to receive a body of a can.

Abstract: A method for strengthening an end member for a container comprises the steps of providing an end member shell and reforming the end member shell. The finished the end member has a central panel wall with a product side and a public side. The public side has a means for opening a frangible panel segment. The end member shell has a central panel extending radially outwardly from a central axis, a panel radius along a peripheral edge of the central panel, a countersink integral with the panel radius, a chuckwall extending upwardly from the countersink having a bend with a radius of curvature and angled axially outwardly, and a seaming curl defining the outer perimeter of the end member shell and integral with the chuckwall. The chuckwall of the end member shell is reformed to decrease the radius of curvature of the bend.

Abstract: Tooling for use with a folded cover seaming machine having a seaming chuck with a profile and a corresponding movable seaming roller formed with a mating profile operable to couple a can end to the walls of a can. The cross sectional thickness of the seaming roller in the transition area is reduced and the corresponding cross sectional thickness of the seaming chuck is increased. The increased thickness of the seaming chuck provides additional strength thereby reducing the occurrence of structural defects or fissures in the seaming chuck. The deceased thickness of the seaming roller provides a contour which minimizes the possibility of damage to cans and jamming of the seaming machine due to jamming in cases where no can end is supplied.

Abstract: A process is provided for displacing air from containers prior to seaming a lid to a container. In the process, a container body is filled with contents and is then injected with liquid nitrogen. A lid is immediately placed on the container body, and a biasing force is immediately applied against the lid to maintain the lid on the liquid nitrogen filled container bodies until the container body reaches the seaming mechanism. The biasing force is sufficient to allow a portion of nitrogen gas from vaporization of the liquid nitrogen to escape from the container body, and to allow air originally present in the container body to escape from the container body, while preventing surrounding air from entering the container body.

Abstract: A method and apparatus for seaming a lid onto a container body by moving the body with a lid placed thereon in a linear fashion by allowing free rotation of the conveyed container body and lid against a linear seaming element is disclosed.

Abstract: An improved, spin-on, bead-lock filter which is particularly adapted for use as a high-pressure oil filter in a diesel engine is provided which comprises a housing containing a filter medium and having an inwardly deformed periphery, and a cover assembly including a cover plate and a retainer plate having mutually spaced apart outer edges for forming a recess that receives the inwardly deformed portion of the housing. A gasket is seated in the recess so that both a mechanical connection and a seal is formed between the cover assembly and the housing when the periphery of the housing is inwardly deformed pursuant to a bead rolling step in conformance with the assembly method of the invention.

Abstract: The invention is directed to a method of manufacturing a double seam joining a can end (2) to a can body (1) which includes a sidewall (13) terminating in an outwardly directed flange (16) having a flange angle (.alpha.) within the range of 0 to -45.degree.. During the support of the can end (2) upon the flange (16) of the can body, seeming rolls (37, 38) form a double seam while an axial load of 600N or less is applied to force the can end and the can body one against the other.

Abstract: An improvement in the shape of a fold in a tin can allows the use of sheet metal of lower gauge than that currently used. This is achieved with a fold geometry on a tin can which is closed off with a double fold, such as for a drink or food tin; by providing a continuous or stepped contour on the fold side; and by insuring that the lid hook is clearly in area-contact (positive fit) on its outer side with the free end of the body hook in its lower third. The invention may be applied to standard-gauge as well as thinner-gauge sheet metal, and generally results in a better seal.

Abstract: A seaming dimension adjusting device in a double seaming apparatus for double seaming a can by successive action of a first seaming roller and a second seaming roller, said seaming apparatus including a seaming chuck, a seaming roller shaft, first and second seaming rollers mounted on a lower end portion of said seaming roller shaft and a double seaming cam which actuates an upper end portion of said seaming roller shaft for shifting said first seaming roller and said second seaming roller either toward or away from said seaming chuck, wherein said seaming dimension adjusting device comprises a double seaming cam having a profile face, including a first seaming cam having a maximum displacement section of said first seaming roller and a second seaming cam having a maximum displacement section of said second seaming roller, at least one of said first seaming cam and said second seaming cam has a seaming cam adjusting means for adjusting the displacement of the maximum displacement section of the seaming roller

Abstract: Tooling for use with a folded cover seaming machine having a seaming chuck with a profile and a corresponding movable seaming roller formed with a mating profile operable to couple a can end to the walls of a can. The cross sectional thickness of the seaming roller in the transition area is reduced and the corresponding cross sectional thickness of the seaming chuck is increased. The increased thickness of the seaming chuck provides additional strength thereby reducing the occurrence of structural defects or fissures in the seaming chuck. The deceased thickness of the seaming roller provides a contour which minimizes the possibility of damage to cans and jamming of the seaming machine due to jamming in cases where no can end is supplied.

Abstract: A container seaming machine has a first drive for positioning a seaming roller with respect to a circumferential edge of the lid, and a second drive for rotating the seaming roller with respect to a container lid chuck, container body and container lid. The first drive and the second drive are independently controllable from each other, and each drive is controlled and coordinated by a programmable controller to seam the lid to the container body. Another drive, also controlled by the programmable controller, lifts the container body toward the chuck and allows for varying degrees of force to be exerted between the container body and the lid. The drives use servomotors and linear actuators for precise positioning control. A process for displacing air from containers prior to seaming a lid to a container is also provided. In the process, a container body is filled with contents and is then injected with liquid nitrogen.

Abstract: Apparatus for seaming an end E to an open end of a container body B in at least first and second seaming operations comprises a lifter pad to support the container body, a seaming chuck to support the end in place on the container body, and an annular seaming tool having at least first and second annular seaming profiles on its inner surface which surrounds the end. The apparatus includes drive means for providing relative rolling movement between the seaming tool and the end in which the drive means drives the annular seaming tool to gyrate around the can end. Means are also provided for causing relative movement between the end and the annular seaming tool, from a first relative position in which the first seaming profile can contact the end E to perform the first seaming operation, to at least a second relative position in which the second seaming profile can contact the end E to perform the second seaming operation.

Abstract: Apparatus for seaming a container end E to an open end of a container body B, comprises a pad to support the container body, a seaming chuck to support the end E in place on the container body B and cooperating with the pad to hold the container body and end one against the other, and an annular seaming tool having two annular seaming profiles on its inner surface which surrounds the end for progressively folding peripheral portions of the container body and end together to form a seam. The annular seaming tool is mounted on a tool holder and means are provided for supporting and driving the tool holder in orbiting motion such that the axis of the seaming tool follows a circular path around the axis of the seaming chuck. The seaming tool is mounted on the apparatus for free rotation about its axis such that when the seaming profile engages the peripheral portions of the container end, it is free to roll around the end to form the seam progressively.

Abstract: In the case of a process for producing a two-chamber pressure-package (R) an inner body (2) of fold-forming, respectively crumplable, material is connected with an outer casing (1) in the area of an adhesive layer (3). Then outer casing (1), adhesive layer (3) and inner body (2) together form a bead (7) around an opening (13). However, a ring (14) is removed from the outer casing before the bead (7) is formed.

Abstract: An aerosol container cover having a central opening for a nozzle and an outer edge adapted for sealing attachment to the open end of an aerosol container body. The aerosol container cover being of a relatively thin walled metal and having a wall thickness in the range of 0.005 to 0.013 inch (0.127 to 0.330 mm) if the metal is steel, and being 0.005 to 0.018 inch (0.127 to 0.457 mm) in wall thickness if the metal is aluminum. The cover is thinner walled than would prevent distortion or eversion of the cover at government mandated minimum pressure levels in the aerosol container. The cover is of a generally convex dome shape as it extends from its outer edge to the central opening, and being free of any countersunk recess in the vicinity of its outer edge. In a method of making the aerosol container cover, the cover is attached to a container body by conventional seaming processing.

Abstract: A workstation for a use with a turret-type cup making machine is disclosed. The workstation is designed for use in making containers, such as paperboard style cups. The workstation includes a rotatable roller assembly and a rotationally stationary guide member which cooperate to curl the sidewall blank with respect to the bottom blank. The rollers and guide member have adjacent surfaces designed to curl the bottom edge of a sidewall blank around a lip of the bottom blank and back into the recessed area at the bottom of the container.

Abstract: A sealed container in which a container body having a ring-like shape and a hollow portion at the center includes opening portions on which a cap member of a similar ring-like shape is attached. The container body is sealed when the annular groove portions of a cap member clamp inner and outer edges of opening portions of the ring-like shaped container body and are secured on inner and outer peripheral surfaces of each of these edges. The can member therefore can be easily attached on the container body so that sealing operation can be effected smoothly and mass-production can be achieved. Also disclosed is a method of manufacturing such a container.

Abstract: A pallet container (1) for liquids has a replaceable inner container (2) made of sheet metal, an outer jacket (6) made of latticework, as well as a pallet (9)in the form of a bottom tray (10), which receives the bottom (16) of the inner container. The inner container (2)is made of sheet steel, preferably constructed as a double-walled structure, and is welded together from a jacket (11), a bottom part (12) and a cover (13). For the production of the inner container, a rectangular sheet-metal blank is bent to form a pipe element, whose mating edges are welded lengthwise. The pipe element is stretched to form a jacket of rectangular cross section. Then, a peripheral bead with a V-shaped cross section in each of the two end areas of the jacket is formed at a distance from its edges, which then are cut. Then, the deep-drawn, tray-shaped bottom part with a rounded edge is superposed or joined exactly to the outer sides of one bead of the jacket and the bottom part is attached to the jacket.

Abstract: A sheet of metal is blanked by an annular blank die to form a disk, and a peripheral portion of the disk is gripped between the blank die and a lower pressure sleeve. The peripheral portion is shifted downwardly relative to a center portion of the disk to start the forming of a center panel within the disk between an annular nose portion of a die center and a high pressure panel punch having a small panel radius and a small clearance therebetween. The peripheral portion is also gripped between a lower die core ring and an upper pressure sleeve which cooperate to form a crown and a depending lip. The center panel is shifted downwardly by the die center against the pressure of the panel punch for forming an inwardly bowed chuckwall against the die core ring and to start a countersink by wrapping the metal around the nose portion of the die center.

Abstract: Method of manufacturing a seam connection between body flanges (9) and end wall flanges (5) of a drum (11) by means of a seaming roller (14) which folds the flanges about eaach other, the essential difference with respect to prior art seaming operations being that the precurl (6) of the end wall flange (5), known in itself, is guided into the lower portion of the groove (15) of the seaming roller so that during the radial movement inwardly of the seaming roller (14) the flanges (5,9) may bulge outwardly in axial direction and form a so called cat's back by means of which the flanges and accordingly end wall (2) and body (1) are centered upon each other, whilst further a distance is provided between the upstanding edge (3) of the end wall (2) and the curvature (10) between body (1) and body flange (9) which distance during the seaming operation may be reduced.

Abstract: A fold along the exterior of a container body between the rim of the latter and a sheet metal closure member forming the top or bottom of the container defines a crevice between material of the closure member and the container body adjacent the latter. A laser beam is directed in this crevice and the container and beam are relatively rotated to form a continuous weld in the crevice so that reflection of laser energy from the weld site is avoided.

Abstract: A can end is seamed to a cylindrical can filled with contents. The can is fed along a substantially elliptical path including straight and arcuate paths. While the can is being fed along the straight path, the can end is seamed to the can by a linear seaming device. At the same time, the can end is rotated by a can end holder which has a pinion gear held in mesh with a rack which extends fully along the elliptical path. The rack is composed of separate rack members which are relatively movable to adjust the tension of an endless chain that moves can ends and cans along the elliptical path.

Abstract: A packed can is seamed by clamping a can body and a lid between a lifter and a chuck, rotationally driving the entire assembly while applying a compression force thereto, and pressing a groove portion of a roll from the outside to an edge portion of the lid to deform such edge portion. Seaming is effected by pressing the groove portion of the roll to the edge portion of the lid with the rotary axis of the roll maintained inclined with respect to the rotary axis of the chuck.

Abstract: A method of manufacturing a metal container by attaching a body formed integral with a top cover to a bottom plate formed separately. The body and bottom plate are sealably attached together with an adhesive and by a tight curl. The tight curl is formed toward the interior of the container and not exposed outside, thus making it pleasing to the eye.

Abstract: A packaging container is closed by using a double seam 152 to secure over the container body 70 a cover 74 of smaller diameter than is usual, creating a radial space 104 around the cover chuck wall 122 into which the body sidewall 72 is deformed to form a neck 76. The cover is initially placed on the body to form a sealable interface 142 therebetween, this interface being preserved throughout the seaming process. The body and/or the cover may be of plastics or metal or a laminated material. In an aseptic packaging process, a primary seal is created at the interface 142 under sterile conditions, seaming subsequently being carried out under non-sterile conditions.

Abstract: A method of making a container by laminating a metal substrate layer and a polymeric material layer together by bonding over the whole of at least one side of the metal substrate layer thereby forming a laminate container component, providing another container component, forming one of the container components into a tubular container body component having an opening set off by a peripheral edge portion, forming the other of the container components into a container closure component having a peripheral edge portion, assembling the container body component and the container closure component with the polymeric material layer in sandwiched relationship between the peripheral edge portions and in the complete absence of adding any additional sealing material between the peripheral edge portions other than the polymeric material layer of the first step and mechanically deforming the peripheral edge portions into a mechanical joint with sufficient force to compress the polymeric material layer and form an an air/

Abstract: A support pad is disclosed for supporting a can body member on a chuck mechanism during a seaming operation. The support pad includes an annular insert made of a ceramic material such as a whisker reinforced alumina material. The annular insert supports the rim of a can body member during the seaming operation. A vent passage is provided extending from a central portion of the upper surface of the support pad to a peripheral side surface for venting the space between the bottom wall of the can member and the base plate.

Abstract: An apparatus for seaming a can end to a filled cylindrical can includes can feed device for supporting the bottom of the can rotatably about its own axis and feeding the can linearly along a travel path at a predetermined speed. A can end holder member is provided for detachably holding the can end directly above the can feed device and holding the can end rotatably about its own axis. A can end feed member is provided for moving the can end holder member to feed the can end in synchronism with the can which is fed by the can feed device. A lifting/lowering member is provided for lowering the can end holder member to hold the can end held by the can end holder member against an open end of the can. A seaming device is provided and extends linearly along the travel path for pressing an end hook of the can end against a flange of the can while the can end against which the can end is held is being fed by the can feed device.

Abstract: The formation of an outwardly extending curl as the upper rim of a pail or drum having a cylindrical wall by curling the peripheral edge through greater than 360.degree. relative to the cylindrical wall forms a strong curl able to support, with the aid of a gasket, a leak proof seal during dangerous goods testing. When used with a lug-cover lid, the lugs may be clenched beneath the curl through a re-entrant portion enhancing the security of the seal. Methods of forming the curl in a two-storage operation by forming primary and then secondary curl components, and an improved lug configuration are also described.