Abstract: The present invention relates to an apparatus for applying a plastic sleeve to a rigid base article, such as a glass bottle. A blank of plastic is wrapped around a mandrel and seamed to form a plastic sleeve. The bottle to which the sleeve is to be applied is preheated and longitudinally aligned over the mandrel. A pressurized fluid is introduced between the plastic sleeve and the mandrel to form a fluid cushion upon which the plastic sleeve can slide without binding or wrinkling. As the pressurized fluid is introduced, a stripper sleeve is actuated to engage the lower edge of the plastic sleeve and block the passage of the pressurized fluid therefrom. Thus, the plastic sleeve is inflated slightly about the mandrel. Then the stripper sleeve is moved upwardly to telescope the plastic sleeve onto the aligned bottle. A gasket is secured to the upper base of the mandrel, upon which the bottle rests during the transfer operation.

Abstract: For producing a tubular body from a blank of sheet material of which the opposite faces, at least adjacent respective opposite lateral margins of each face are made of mutually weldable thermoplastic material, the blank having a central section, and two opposite flanks which respectively have said opposite lateral margins distally of the central section.

Abstract: A flexible dispensing tube is disclosed having a laminated plastic-metal-plastic wall, the metal layer having at least one irregular surface for improved deadfold at the folded bottom end.

Abstract: A process of making and filling an envelope shaped as a ring airfoil for use as a projectile. The envelope is formed of resilient material into a tubular shape with an outer wall portion and an inner wall portion located along the tubular extent thereof with a foldable portion therebetween. The walls are relatively moved to form a payload cavity by moving the inner wall to nest within the outer wall by folding at the foldable portion with the ends contiguous. The foldable portion forms the leading edge of the airfoil. The trailing edge is formed by joining the contiguous ends. Payload filling and final sealing steps complete the airfoil projectile shape.

Abstract: A method is disclosed for fabricating packing containers comprised of a heat-shrinkable material. A web or blank of the material is heated on one side to an extent such that the material acquires a tendency to assume a tubular shape. Overlapping longitudinal ends of the web or blanks are heat and pressure sealed to form a tubular member. The ends of the tubular member are folded inwardly under the effect of heat to form flange-like portions to which end plates may be attached to form the packing container.

Abstract: A sheet of porous filter material folded into accordion pleats, the pleats having opposite edges folded over on diagonal fold lines to close the opposite edges of alternate pleats. The pleated and folded sheet is selectively disposed in flat panel form or formed into a tube with the pleats extending axially of the tube. When the filter is in its tubular form, the folded pleat ends are disposed at the exterior of the tube.

Abstract: The invention provides a method and apparatus for manufacturing rounded containers having inner and outer mating wall parts of plastics with a printed paper segment between said parts. The method comprises locating an outer wall part at a paper insert station in alignment with the smaller open end of a tubular tapered guide, feeding a printed paper segment through the tapered guide, where it is progressively shaped to correspond with the container but is given slightly smaller dimensions, and into said outer wall part, whereupon the resilience of the segment due to bending causes it to expand into contact with the interior of said outer wall part. An inner wall part is pressed into the outer wall at a subsequent operating station.The apparatus is arranged specifically to effect the above method.

Abstract: To achieve maximum strength and reliability, a bag for use as a waterbed mattress is formed entirely of lap welds, that is, without any butt welds. My U.S. Pat. No. 3,825,172 discloses a lap weld method in which a length of plastic material is rolled to form a tube, the ends being lapped and partially welded to leave an access opening to the inside of the bag. The tube is telescoped over a welding die having the cross sectional configuration of the mattress, but axially short. The tube is accordion folded about the thin form with the ends of the tube turned inwardly over the peripheral rims of the form. End pieces are then welded in place. The form is removed through the access opening and the partial weld completed by the aid of a separator stick removable through the fill hole.

Abstract: A method and apparatus are disclosed for sealing flexible plastic sheets together. The method is performed by use of a die wherein a pair of longitudinal grooves are provided at the edge of the sealing area. The die is connected to a source of radio frequency energy and the sheets are placed between the die faces to effect the seal. Due to the provision of the grooves the sealing is effected without the extrusion of material into the space between the sheets thereby to produce a stronger and more satisfactory bond.

Abstract: A packing container is formed from laminated material including a carrier layer of foamed plastics and has a generally tubular part and an end closure in the form of an end plate, the peripheral area of the latter is sealed to a region of the tubular part of the container at a region where the tubular part is folded in by shrinkage to fit against the underside of the end plate.

Abstract: A joint having improved snag resistance and peel strength is formed between overlapping end portions of a thermoplastic strap by the method and apparatus of the present invention. The thermoplastic strap is formed into a loop having overlapping inner and outer end portions which are joined to one another by a resolidified thin layer of formerly melted material from each of the overlapping strap end portions. Resolidified material extends completely to an inwardly tapered end of the outer strap end portion to provide the improved joint. A resolidified mass of formerly molten material also is present in front of the tapered end to further protect it against snagging.

Abstract: A method of automatically making frames from elongate workpieces, more particularly plastics, characterized in that the workpieces are heated individually at predetermined places to be subsequently bent and at the ends. Each workpiece is conveyed transversely of its longituidinal extension along a path which is formed by longitudinal guides with predetermined edge curvatures and along which spatially curved guide-like stops are provided, so that the particular workpiece is forced to bend itself around the edge curvature. This operation is repeated at least in accordance with half the number of the places of the workpiece to be bent, whereafter the two ends of the workpiece have approached one another and the ends of the workpiece are melted and pressed against one another.

Abstract: There is disclosed herein an improved method and apparatus for plastic sealing/bonding in which a wire element is positioned between two interfacing (plastic) pieces to be sealed/bonded together, wherein one or both of said pieces are wholly plastic or contain a plastic component. With the wire sandwiched and retained between the interfacing surfaces, a voltage is applied to the wire for a predetermined time to cause the wire to heat sufficiently to melt both interfacing surfaces and effect a fusion and formation of a bond.

Abstract: Electrical insulators are formed from insulative strip material by providing a substantially continuous ultrasonically welded seam. In one embodiment a tubular insulator for covering stator winding connections is formed by continuously moving the strip and a strip of dissimilar material about a cylindrical former having its axis in generally the same direction as the direction of elongation and motion of the strips to thereby form a multiple layer sleeve with a seam being ultrasonically formed to include the two edges of the strip of polyester material. In a second embodiment two or more parallel elongated narrow flat strips are moved in their direction of elongation with a plurality of flat sheets of polyester material being ultrasonically bonded thereto along a substantially continuous seam on the individual sheets with the individual sheets occurring at uniform intervals along the strips to thereby form a ladder-like strip of insulators.

Abstract: A cup or other nestable container is formed from two continuous web stocks of thermoplastic material, particularly an expanded thermoplastic material. A rectangular blank to form the sidewall of the container is severed from a first web stock, and formed into a cylindrical sleeve with the end portions thereof joined to one another in a liquid-tight seam extending the full height thereof. A circular bottom closure disc is cut from a second web stock and transferred to a recessed top of a forming mandrel carried on a continuously-moving turret. The cylindrical sleeve is positioned about the forming mandrel, which carries the sleeve and bottom closure disc to various subassemblies that cooperate with the forming mandrel to produce a finished cup. The cylindrical sleeve is forced downwardly into a heated rimming die positioned adjacent the lower edge of the forming mandrel to cause the lower edge of the sleeve to be rimmed.

Abstract: An inflatable pipe plug in which a series of reinforcing strips of rubber tire cord having unidirectional threads are sandwiched between inner and outer molded members of rubber. The strips include pairs crossing each other with their threads at angles to each other. One underneath sleeve-like strip is longer than the two molded rubber members and is folded back over other strips. A metal head has a tubular portion fitting into the interior of the inner rubber member and is vulcanized to it and also to an inner sleeve of rubber which is somewhat longer than the aluminum head and extends beyond it and is bonded also to the inner rubber member. The structure enables the plug to withstand stress when compressed air is supplied to it through a cap that is bolted to the aluminum head.

Abstract: A sheath for battery electrodes is made by introducing a fibrous tubular material along a mandrel. A perforated thermoplastic material is applied around the outside of the fibrous material. Subsequent to applying the fibrous material, the mandrel is heated, thereby heating the fibrous material. The latter heats and softens the inside of the thermoplastic material at their points of mutual contact. The thermoplastic material is then subjected to external pressing forces and external cooling temperatures to press the thermoplastic material against the fibrous material while cooling the thermoplastic material.

Abstract: A laminated web comprising an internal base layer of paper faced with external thermoplastic layers is cut longitudinally into a plurality of separate webs each of which is then used in a packaging machine and formed into a tubular configuration with an overlapped edge seam. In order to prevent a "wicking" action at the internal base paper layer located on the inside of the package tube which could take place when the package is filled with a liquid, a mode of cutting the web into the separate strips is utilized wherein one of the plastic outer layers along one edge of each strip projects laterally beyond the edge of the internal paper layer and the edge of the opposite outer plastic layer. When each web is thereafter formed into a tube in the packaging machine by the overlapped seam technique, the laterally projecting edge portion of the plastic layer is then adhered to the adjacent plastic layer thus effectively sealing off the edge of the internal paper layer from the liquid contents of the package.

Abstract: A machine for transforming heat shrinkable thermoplastic material into sealed and liquid-filled containers in which the material in strip form is cut off to a suitable length then heated and transformed into a tube-shaped shell blank on a mandrel with an overlapped longitudinal heat-sealed seam. The shell is then displaced in relation to the mandrel so that its bottom end extends beyond the end of the mandrel, a base blank cut from another strip is then inserted into the end of the shell to rest against the mandrel end, and the shell and inserted base are then heated causing the shell to shrink accurately to the shape of the mandrel and the bottom edge zone of the heated shell to be folded in against the end of the mandrel and the edge of the base. The joined edge zones of the shell and base are then pressed together and heat sealed. The container is then passed to a filling machine where it is filled and closed by a lid.

Abstract: A cup or other nestable container is formed from two continuous web stocks of thermoplastic material, particularly an expanded thermoplastic material. A rectangular blank to form the sidewall of the container is severed from a first web stock, and formed into a cylindrical sleeve with the end portions thereof joined to one another in a liquid-tight seam extending the full height thereof. A circular bottom closure disc is cut from a second web stock and transferred to a recessed top of a forming mandrel carried on a continuously-moving turret. The cylindrical sleeve is positioned about the forming mandrel, which carries the sleeve and bottom closure disc to various subassemblies that cooperate with the forming mandrel to produce a finished cup. The cylindrical sleeve is forced downwardly into a heated rimming die positioned adjacent the lower edge of the forming mandrel to cause the lower edge of the sleeve to be rimmed.

Abstract: The overlapping edges of a continuously formed tubular configuration of plastic web are fused together between a backup ring and a sealing roller continuously heated by hot air directed against the periphery of the roller. When the heated roller is pressed in sealing engagement against the overlapped edges of the moving film it is rotated due to the frictional engagement of the roller with the film. A portion of the hot air impinges on blades extending laterally from opposite sides of the roller to apply torque thereto and thereby keep the roller spinning whenever the roller is out of frictional engagement with the overlapped edges of the continuously advancing web. By keeping the roller spinning it is evenly heated and hot spots are not allowed to develop as they would if the roller stopped while hot air continued to impinge on it. Cooling air is applied to the sealed overlapping edges after the sealing operation has been performed.

Abstract: The present invention relates to a method for the manufacture of laminate webs, each of which comprises a central base layer with layers of coating material applied to both sides, one of which extends beyond one edge of the web and forms a firm strip.

Abstract: Tubular container bodies having a lap side seam, obtained by uniting a resin and an adhesive bondable therewith, are produced by applying the bonding resin to the limited lap area of body blanks moving in a continuous stream and applying heat to the limited lap area to cure the resin in less than one second; the resin may be so applied that the raw metal edge of the body blank is also coated. The resin may be subsequently reheated to the final state of cure in which it will bond to the tacky adhesive on the opposed lap margin of the body blank.

Abstract: The composite of the present invention comprises a layer of ceramic having completely imbedded therein a metal grid, such composite having been made by coating a metal grid with a viscous ceramic slurry and thereafter firing to form the ceramic to a unitary structure. At the temperature to which the composite is fired to form the unitary structure the metal grid is in an expanded condition because of its high coefficient of thermal expansion, and upon cooling the metal grid is put into tension thereby putting the ceramic in compression.

Abstract: A foamed plastic material of polyethylene or polystyrene capable of being heat-shaped for use in making packing containers wherein by stretching of the foam the cells therein are given a lenticular or elongated structure. In the case of a lenticular cell structure, produced by a bi-axial stretching operation, the individual cells are situated in layers in parallel planes. In the case of an elongated cell structure, produced by a mono-axial stretching operation, the individual cells are situated with their longitudinal axes in parallel planes.

Abstract: A nylon-base adhesive composition for metals is composed of 100 parts by weight of a mixture of nylon 11 and nylon 12 and about 2-40 parts by weight of nylon 6-12. The adhesive composition has excellent heat resistance and water resistance and is particularly useful for making cans. The properties of the adhesive composition can be further improved by adding thereto polyethylene, an ionomer, or a mixture thereof.A process for bonding steel sheets using the adhesive is also disclosed.

Abstract: The raw metal edge on the inside lap in an adhesively-bonded lap side seam of a tubular body is protected from chemical attack by a corrosive substance from within the tubular body by applying a side seam adhesive along one marginal edge portion of the body blank, bending the other parallel marginal edge portion of the blank to form a crease thereon, rolling the blank into tubular form to place the adhesively-coated marginal edge portion and the creased marginal edge portion in an overlapping, facing position, and imbedding the creased marginal edge portion into a portion of the adhesive on the one marginal edge portion to bury the raw metal edge, the imbedding being achieved by compressing the overlapped marginal edge portions together to assemble the lap side seam of the tubular body.

Abstract: The adhesion of propylene polymer layers to enamel coated metal surfaces is improved by incorporating an adhesion promoting amount of a carboxyl modified polypropylene resin in the enamel.

Abstract: An enclosure is assembled about an electric cable joint or termination by applying about the cable or cables a plastics sleeve slit therethrough its length and enclosing the adjacent pair of longitudinal edges of the sleeve in a mould which has ports for the admission and discharge of molten thermoplastics material. Molten thermoplastics material that is compatible with the plastics material of the sleeve and that is at a temperature appreciably above the softening point of said material is injected into the mould through at least one port and, after a sufficient quantity of molten thermoplastics material has passed through the mould to soften the surfaces of said longitudinal edges, the molten thermoplastics material in the mould is permitted or caused to cool and make an effective bond between said longitudinal edges. The sleeve is then sealed to adjacent separately formed end parts of the enclosure.

Abstract: A method and apparatus for continuous welding together of sheets of the type in which adhesion is derived from the melting and re-hardening of the sheet material itself rather than from an externally applied adhesive. A sheet, formed into a tube with the opposite sides overlapping, is tensioned longitudinally so as to form longitudinally extending stress lines which appear as ripples, at least at the overlapping edges such that the sheets weld at the bottom of the valleys formed by the ripples. As the tensioned sheet moves continuously between a heating element and a backing plate, both of which are stationary relative to the tube forming means, the sheets weld as the material from the sides of the valley of at least one sheet runs to the bottom of the valley, at which point the weld bead is formed, whereby the thickness of the weld bead may be more than twice the thickness of the original unheated sheet material.

Abstract: A method is described for joining the opposite edge portions of a sheet of flexible material to form a durably-joined elongated tubular member. The material is shaped or folded to provide opposite edge flaps, spaced and extending outwardly from the tubular member formed. A strip of connector tape, folded lengthwise to form a pair of leg flaps, is interposed between the edge flaps with its legs confronting and extending oppositely thereto. Each leg flap is bonded to its corresponding adjacent edge flaps, whereby the tape serves to connect the edge flaps and form a longitudinal joint within the elongated tubular member. The tubular member so produced may include an insulating layer and a flexible skeletal structure therewithin.

Abstract: The invention disclosed sets forth a method and machine for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension, and (2) cross-dimension pleats. Predecorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam the overlap to make a sleeve. The sleeve is stripped onto the top neck end and over the closure of a bottle of room temperature to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking the material onto a "cold" bottle.The disclosure includes a novel machine for making the sleeve from a plastic web and placing it on the bottle.

Abstract: A one-use bottle-shaped container has a cylindrical shell portion, a base portion which has an inturned flange continuous with the shell portion, a central disc sealed to the flange and a bottleneck-shaped upper portion terminating in an opening considerably smaller than the cross-sectional area of the cylindrical portion.

Abstract: The invention disclosed sets forth a method and machine for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension, and (2) cross-dimension pleats. Predecorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam the overlap to make a sleeve. The sleeve is stripped onto the top neck and over the closure of a bottle at room temperature to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking the material onto a "cold" bottle.The disclosure includes a novel machine for making the sleeve from a plastic web and placing it on the bottle.

Abstract: A method for forming lengths of adhesive tape into tubes including providing a mandrel having an axis and a multiplicity of radially outwardly projecting resilient bristles having tips defining at least the major portion of a periphery around the axis in the shape of a tube to be formed. The tape is wrapped around the periphery of the mandrel and the ends of the tape overlapped to form a tube having an axially extending seam. A ring is then pressed against one end of the formed tube to slide it axially off of the bristles and mandrel.

Abstract: A perforated pipe method of making a perforated pipe suitable for subsurface irrigation laterals by forming indentations and perforations in indentations of sheet material then rolling the sheet material into a tube or pipe.

Abstract: A non cylindrical tubular container is formed from a blank creased to delineate contiguous hexagonal cells. The blank is provided with tabs at one edge which engage in slots in a mandrel having a pair of hexagonal ends between which extends a contoured surface that initiates folding of the blank about its creases. The blank is first partially wrapped around the stationary mandrel and glue is applied to the free end of the blank. Wrapping is completed by rotating the mandrel so that the ends of the blank overlap. The overlapped ends are pinched together by a presser bar that pushes the ends against the mandrel. The completed tubular container is then pulled off the mandrel by gripping one edge of the container and pulling it endwise away from the mandrel.

Abstract: A hollow shaped article is formed from a preformed sheet of foamed thermoplastic material wherein a joint is formed along the length of two abutting edges of the preformed sheet at the sheet's surfaces but inwardly of the surfaces the abutting edges are left unbonded. The process for forming the articles is characterized by flexing the preformed sheet into the desired general shape, placing it into a two-part mold, and then heating it in two heating steps.

Abstract: Improved, fast curing adhesives, with and without fillers, and articles bonded therewith are provided. The adhesive comprises a first part made up of a thermoplastic, non-reactive polyurethane polymer dissolved in an addition polymerizable combination of an acrylic or methacrylic monomer, a copolymerizable monomer containing at least one free carboxylic acid group, and a non-activated free radical addition polymerization catalyst system, and a second part comprising an activator for the free radical catalyst system. Exemplary of such a formulation is a first part made up of a polyester urethane, e.g., the condensation polymer of polyethylene adipate and toluene di-isocyanate containing no free isocyanate, dissolved in a mixture of acrylic acid and methyl methacrylate, each of the three components being present in equal amounts. About two weight percent benzoyl peroxide and about 0.1 weight percent hydroquinone are dissolved in the mix.

Abstract: A method and apparatus for forming a thermoplastic resin vessel including a bottom plate and at least two side plates is provided. The bottom plate or portion is applied to the surface of an inner mold by advancing a bottom mold carrying the bottom plate. The side plates or portions are formed along a concave surface of side molds and is then positioned around the inner mold to completely surround the inner mold to form a tube which holds the bottom plate therein. The outer mold is then removed and the vessel formed by the tube and bottom plate is then removed from the inner mold.

Abstract: A laminated settable tubular package is disclosed having integral end and body portions of the same material. The tubular package is formed with a process and apparatus which permits head and shoulder portions to be formed as a continuation of the tubular body through folding and shaping operations. The package is substantially impermeable and has particular use for containing toothpaste, essential perfumes, oils, solvents, flavorings, and other substances in which permeation of the atmosphere and/or volatization losses are problems.

Abstract: Apparatus for sealing together portions of material having a sealable plastics coating includes opposed jaws each carrying a guide rail with a slot to receive marginal edges of the material and to spread these edges apart. Hot air is blown onto the spread apart edges to soften the plastics material. The edges are then urged together to form a seam which is accurately defined by the jaws.

Abstract: Thermoformable release liner for use in sheet products subjected to deep-draw thermoforming operations and which may be readily removed as generally one piece by hand-pulling after the thermoforming operation is completed, comprises a multilayer structure including (a) a reinforcing layer of a material that, although it is unsuitable for use as the complete release liner, provides useful properties when used as a thinner layer of the release liner, and (b) at least one additional layer adhered to the reinforcing layer to give body to the release liner.

Abstract: A sleeve forming method wherein a rectangular sheet of thermoplastic material is formed into a tubular shape having overlapped end portions that are sealed together by directing heated air between the end portions to soften their facing surface and pressing the end portions together to form a seam. The seam preferably is liquid-tight, so that the sleeve may be utilized to form the sidewall of a cup or nestable container wherein the sleeve is heat-shrunk about a generally frusto-conically shaped mandrel to give the container sidewall its desired shape. A two-piece container can be formed by sealing a bottom disc member to the end of the sidewall, and a one-piece container can be formed by collapsing and fusing the end of the sidewall sleeve to close the bottom of the container.

Abstract: A cup or other container is fabricated from two continuous web stocks. The sidewall, which is formed from a rectangular sheet-like blank of thermoplastic material cut from one web, is produced by winding the blank in a cylindrical winding mechanism to present the edges in overlapping relationship, heating the edges as the cylindrical blank is transferred axially in the winding mechanism, and compressing the edges between seaming rollers to join the edges into a liquid-tight seam. The cylindrical sleeve is placed on an upward-facing forming mandrel carried on a conveyor. A bottom disc closure is partially cut from a second web, transferred by the web into overlying relationship with the path of the forming mandrels, punched from the web, and deposited on the top of the forming mandrel preparatory to reception of the cylindrical sleeve. The cylindrical sleeves are shrunken about the forming mandrels to cause them to assume the shape thereof.

Abstract: A method for producing receptacles of a thermoplastic resin foam sheet, which comprises forming a cylinder of a rectangular-shaped uni-directionally shrinkable thermoplastic resin foam sheet which, when heated, shrinks in a first direction to a greater extent than other directions perpendicular to said first direction, so that when heated, the thermoplastic resin foam sheet will shrink toward the central axis of the cylinder; bonding the side edges of the sheet forming the cylinder; heating the foam sheet on a molding form to a temperature above the softening point of the resin, whereby the cylindrical foam sheet shrinks toward the central axis of the cylinder formed by the sheet and intimately contacts the circumferential side wall of the molding form to form a bottomless or gathered cylindrical article; and compression-molding the article under heat to form a thermostatic resin foam receptacle.

Abstract: A multiple ply wood article having a first wood veneer ply defining a generally tubular shape, which may be generally cylindrical, with a pair of confronting ends providing a first seam. A second wood veneer ply defining a generally tubular shape generally similar to the shape of the first wood veneer ply with a pair of confronting ends providing a second seam. The second wood veneer ply being disposed exteriorly of the first wood veneer ply in general surface to surface adjacency. The grain orientations of the first and second wood veneer plies being oriented generally parallel with respect to each other. Adhesive means securing the wood veneer plies to establish a multiple ply tubular body. The first and second seams are preferably in generally relative nonaligned position. Additional wood veneer plies having similar structural features may be secured over the first two plies. Closure elements may be secured to one or both ends of the tubular body in order to establish a container.

Abstract: A cover for covering elbows or angles in tubular conduits formed in the shape of a convoluted sheet of material such as polyethelene, and shaped to form a first stable configuration state fitting part way around the object to be covered. Opposite ends of the cover are caused to encircle the selected portion of the object in a second stable configuration state. In other embodiments, the cover has an integral part thereof, coupling ribs, adhesive, a tongue-in-sleeve or belt-in-loop arrangement or other coupling means or combinations of coupling means by which two opposite ends of the cover are coupled together around an object.

Abstract: Method and apparatus for producing closed loop accordion pleated filters. Accordion pleated filter structures are advanced from a feeder hopper one at a time by pusher members and guided along guide means arranged in a converging fashion and which pass between the endmost pleats to bring the ends of the pleated filter toward one another. Second pusher means then move the pleated filter, which is now arranged in a substantially U-shaped configuration, along the guide members to orient the outermost pleats into a substantially common horizontal plane. Third pusher means move the outermost flaps upon a pair of blades and substantially surrounding one arm of a paddle wheel assembly. A suitable hot melt is deposited upon the surfaces of one of the outermost flaps. The blades swing downwardly and move toward one another to press the outermost flaps having a hot melt deposited thereon into firm engagement.

Abstract: A method of and apparatus for making a longitudinally partitioned tubular body and sealingly securing a longitudinally divided head fitment to one end of the body to form a collapsible, longitudinally partitioned tubular dispensing container assembly. A single sheet of body forming material is configured, looped, spindled, and seamed to integrally form a tubular exterior wall and a chordal partition which are sealingly secured together along two longitudinally extending lap seams in the tubular wall. An end of the tubular wall is sealingly secured to the radially outwardly facing cylindrical surface of a longitudinally extending cylindrical skirt portion of the head fitment, and the adjacent end portion of the chordal partition is sealingly secured to a longitudinally extending chordal divider portion of the head fitment.