Abstract: An improved process for forming a mechanical fastening prong and the prongs produced thereby. The prongs are produced by deposition of a heated, thermally sensitive material onto a substrate, which is transported at a differential velocity relative to the heated material being deposited to form the prongs. Also, the transported substrate may be drawn away from the point of deposition at an angle. By varying the velocity differential between the substrate and the heated, thermally sensitive material as it is deposited and by varying the angle between the substrate and the point of deposition of the heated thermally sensitive material, the fastening characteristics, particularly the shear strength, of the fastening system formed of these prongs may be advantageously modified.

Abstract: A method for twin sheet forming layers high heat distortion temperature thermoplastic materials. The process employs a low heat distortion temperature thermoplastic material layer disposed between the layers of high heat distortion temperature material layer to permit adhesion therebetween at moderate temperatures to reduce thermal degradation. The structures made therefrom are useful as aircraft ducting.

Abstract: A light, comfortable, lined shoe made of soft synthetic resin that employs another more durable hot-melt bond synthetic resin in the critical heel and foot entry opening regions to prevent shape distortion over the long term is provided. An extremely simple method of manufacture allows the shoe to be made inexpensively in quantity.

Abstract: The components forming the layers of a composite pipe are successively introduced into a rotary drum (1). Initially, a plastic reinforcing lyaer (8), including a fiber reinforcement, is introduced into the drum, the ends of the drum (1) being bounded by rings. A concrete core layer (16) is then introduced and the length of the core layer (16) is shortened relative to that of the drum (1) by shaping rings fixed to the drum ends. The shaping rings are then replaced by other shaping rings (20, 21) so that, on either side of the core layer (16), two annular spaces (22, 23) are formed which are filled by a socket material (24, 25) of the same composite as the reinforcing layer (8). Thus, at one pipe end a socket end (28) is formed and at the other pipe end a spigot end (30) is formed, each such end being located within the composite pipe wall thickness. After introducing a second reinforcing layer (26), the production of the composite pipe is completed.

Abstract: In a method of making an ornament, a metal ornament body having an internal groove opening at one end to an end edge of the metal ornament body and at an opposite end to front and rear surfaces of the metal ornament body is held between two relatively movable mold members while the one end of the internal groove is connected to a gate of the mold members and the opposite end of the internal groove communicates with mold cavities in the mold members. Then, a melted synthetic resin material is injected into the mold cavities through the gate and the internal groove. The gate mark is not formed on the outside surface of an ornamental member molded of synthetic resin but left on the end edge of the metal ornament body. The gate mark thus formed is normally hidden from view and does not deteriorate the aesthetical appearance of the ornament.

Abstract: A method of making a phantom for NMR diagnosis contains the steps of placing at least one small container having at least a portion of its wall made of a thin film of a plastic material in a large container made of a plastic material, charging a first aqueous solution of polyvinyl alcohol into the small container, charging a second aqueous solution of polyvinyl alcohol into a space defined by the outer wall of the small container and the inner wall of the large container, freezing the first and second aqueous solutions of polyvinyl alcohol to obtain frozen masses, and then thawing the frozen masses. A composition of the first aqueous solution of polyvinyl alcohol is different from a composition of the second aqueous solution of polyvinyl alcohol.

Abstract: A method for forming a plastic coating for a foam molding insert or retainer member includes the steps of preforming an insert member having openings therethrough; partially sealing the openings and/or the perimeter edge of the insert member with protuberances formed on a conforming buck; completely sealing the openings and/or the perimeter edge by spraying polymeric material against the insert and the protuberances only in the vicinity of the hole and the perimeter edge to form seals without covering the insert with a film wrap; curing the seals to provide a leak proof patch which prevents foam leakage through the insert during a foam molding process.

Abstract: Disclosed is a process for sealing a hollow fiber membrane separation module into a case. The hollow fiber mambrane separation module is formed from a plurality of hollow fibers arranged in a bundle surrounding a core and having tube sheets surrounding each end of the bundle which bind the hollow fibers together. The disclosed process simultaneous with such sealing creates first and second spaces overlying the ends of the plurality of hollow fibers. Such first and second spaces, in cooperation, permit the introduction and withdrawal of fluids through the lumens of the hollow fibers.

Abstract: Disclosed is a method for the fabrication of wire anodes for electrolytic capacitors, the wires being obtained by the compacting of a wire, made of anodizable material, in the cavity of a compression sleeve under the effect of a piston, the wire going through the piston from one side to the other along the axis to its movement and through the sleeve by passing into its cavity. Also disclosed is a device for the implementation of the method.

Abstract: In manufacturing a composite material blade for a helicopter, for example, an upper and a lower dummy skins are disposed on molding surfaces of an upper and a lower mold halves. A dummy block provided with a preliminarily hardened vertical rib and having an outer shape corresponding to the molding surface of the lower mold half is also disposed. A lower portion of a spar is joined to a lower surface front edge cover and the vertical rib and a rear edge reinforcing member is joined to the lower surface rear edge cover. An annular reinforcing member and a front edge block are disposed on the lower portion of the spar and an upper portion of the spar is disposed on the annular reinforcing member and the front edge block. In this state, the upper and the lower mold halves are closed and thermo-setting treatment is performed to the closed mold assembly.

Abstract: A method of manufacturing a composite camshaft having a shaft positioned within appropriately aligned and fixtured annular cam and bearing elements, each having interior protrusions that increase in size toward the tube axis. The shaft and elements are supported in a mold and a flowable, hardenable material is injected to fill the space between the tube and the elements for securing the elements to the shaft. The protrusions enhance the grip of the plastic with shrinkage. The shaft and the cam elements have nesting configurations that form a continuous space therebetween such that the hardened material compressionally resists torsional forces between the shaft and cam elements. Injection molding is performed without substantially stressing the freely supported shaft and without applying undue strain to the elements by providing undercut portions in the mold surrounding part of the exterior surface of the elements with high pressure plastic during injection.

Abstract: An article of manufacture comprises a pultruded thermoplastic composite body having at least two integral sections of different cross-sectional shapes. This is produced by a method and/or in an apparatus wherein an elongated body of reinforced thermoplastic material is pulled through a plurality of dies and the plurality of dies are operated independently of each other so that any combination of the dies can be selected to operate on the elongated body for imparting to at least a portion of the body the cross-sectional shape of the selected one or ones of the dies.

Abstract: A mask apparatus for charging flowable materials into selected cells of a honeycomb structure comprising a solid body having a number of openings extending therethrough which are spaced to coincide with the open ends of the selected cells exposed at the structure's end face, after the mask is positioned across the end face, the flowable material is charged through its openings. In one embodiment, a rigid plate having a number of bores therethrough is provided for charging a plastically formable plugging material into a honeycomb structure in the fabrication of solid particulate filter bodies and other selectively manifolded structures. In a preferred embodiment, a thin transparent polyester film is attached to an open surface of a honeycomb structure and openings melted therethrough.

Abstract: A method for manufacturing a cover for a can-like container providing improved peelability of a handle. The cover is made by forming a second resin layer by injection molding or compression forming on a multi-layer sheet which oxygen, water, and the like cannot permeate. A thermally weldable first resin layer is provided on the upper surface of the multi-layer sheet. The handle is formed by the second resin layer. A treatment is carried out for allowing the handle to be easily peeled off the multi-layer sheet to all or part of a region of the multi-layer sheet in contact with the underside of the handle.

Abstract: Process and apparatus for the manufacture of integral roller door structures of any desired length and width, and comprising longitudinally juxtaposed slats separated by integral hinge formations. Such a structure having slats of any desired length can be produced by a semi continuous moulding process in which a molten plastics material and a foaming agent are injected into a mould, the part of the structure so formed being allowed to solidify before removing the solidified structure partially from the mould, then closing mould about the remaining portion of the structure, thereafter moulding a further part of the structure within the mould onto the remaining portion of the previously moulded part and repeating the cycle as often as required.

Abstract: A method of constructing an equipment pad and the resultant pad is disclosed. The method comprises the steps of providing a mold with fiberglass material laminated to the interior walls of the mold, providing a layer of polymer concrete in the base of the mold, covering the layer of concrete with a sheet of fiberglass material, covering the fiberglass material with an additional layer of polymer concrete, placing honeycomb material on the additional layer of concrete, filling selected cells of said honeycomb material with a polymer concrete, laminating a fiberglass sheet to the upper surface of the honeycomb material and sealing the upper sheet of fiberglass to the fiberglass laminated to the walls of the mold. The finished pad is then removed from the mold and inverted. If desired, an opening may be molded into the pad.

Abstract: A method and apparatus for producing molded articles attached to a flexible web by molding the articles in the cavity of a mold which includes entrances for the web and elements for centering the web in the cavity. Structures are provided to trim waste from the molded article and automatically advance the web upon opening of the cavity. Elements are provided to separate articles with a predetermined length of web material attached.

Abstract: A method for producing concrete products provided with inlaid patterns includes (a) preparing a reusable mold provided with recessed patterns by applying ultra violet rays on the surface of an ultra-violet-ray setting resin plate, (b) preparing a waste mold provided with recessed patterns from the reusable mold, the waste mold being made of a soluble material which can be dissolved by water, solution or heat, (c) casting concrete into the waste mold and solidifying the concrete to provide a concrete block on the waste mold, (d) dissolving and removing the waste mold from the concrete block and providing recessed patterns on the surface of the concrete block, (e) filling a coloring material into the recessed patterns on the surface of the concrete block and solidifying the coloring material, and (f) grinding the surface of the concrete block to produce concrete products provided with inlaid patterns on the surface thereof.

Abstract: A pack for fluid media, comprising a tube (1) forming side walls (2, 3) as well as a cover (5) and a base, which cover and base are fitted to end edges (4) of the tube (1) is provided. At least the side walls (2, 3) and the base are made of plastics-coated carrier material incorporating paper, cardboard or the like, and the base is formed by folded-over wall panels which are formed integrally with the tube (1), providing two mutually oppositely disposed double-walled triangular panels which are in communication with the interior of the pack. The cover (5) is also formed by folded-over wall panels (6) which are formed integrally with the tube (1) and edges (7) of the wall panels (6) are fluid-tightly connected together by injected bridges (8) of plastics material.

Abstract: A flexible link belt is made by injection molding link portions into and through a flexible carrier webbing, whereby the link portions are also bonded to each other through holes in the webbing. The injection mold used for making the links has two mold sections each with a cavity portion corresponding to the respective link portion. The carrier webbing is held in place between the two mold sections. An injection nozzle reaches into one mold portion and a movable core reaches into the other mold portion preferably in such a position that the injection nozzle and the movable core face each other across the flexible webbing. The core distributes the injected plastics material into both mold portions and so that the plastics material must move primarily through the holes or interstices in the webbing.

Abstract: A link chain or string is produced in an injection molding tool in such a way that a plurality of links threaded onto a string or cable are molded simultaneously, for example in the form of spheres. In order to avoid the transmission of axial forces to the links, which forces might disturb the axial spacings from link to link, the injection molding tool is provided with restrictions which reduce the cross-sectional area of molten material flow channels to a minimum. Preferably, the restricted area is located directly at the respective link. The channels all lead to a common injection molding channel to which the molten material is supplied for thus simultaneously casting or molding of a plurality of links to strings or cables. The restrictions make sure that any forces resulting from shrinkage during the cooling and solidifying cannot shift the balls or links even if the latter are not yet completely solidified internally. Thus, errors in the on-center spacing between adjacent links are avoided.

Abstract: Methods of manufacturing a modular, monolithic, integrated, multi-layered, mold building structure including the steps of constructing a dismantleable mold having an outer rigid matrix and an inner inflatable plug, wherein the inside dimensions of the matrix correspond to the outside dimensions of the structure and the outside dimensions of the plug correspond to the inside dimensions of the structure, placing high strength fibers between the plug and the matrix, injecting hardenable material between the matrix and the plug, curing the hardenable material into a hard shell, removing the matrix, deflating the plug, and installing walls, doors or windows. The structures may be joined together on-site in various combinations and configurations to create different types and styles of buildings.

Abstract: The invention relates to a lens mounting (11) for an electrodynamic device for recording and/or reading information in and/or from optically readable discs, which device comprises a frame with supporting means for guiding the lens mounting. The lens mounting comprises a first part (27) which cooperates with said supporting means and a second part (31) which is movable relative to said first part and which comprises the mount (32) for a lens system for focusing a radiation beam. The lens mounting (11) further comprises connecting means (33A, 33B and 35) which movably connect the first and the second part to each other. Respective opposite ends of the connecting means are embedded in the first part and the second part of the lens mounting by injection molding into a molding which is configured so that the relative position of the first and second parts are defined by the corresponding portions of one molding die.

Abstract: A process is described which allows continuous flexible connectors to be produced, particularly for vehicles, provided with at least one stop element a flexible cable wound in a coil is stretched between two facing mould halves and clamped to lie between these; at least one attachment element of synthetic plastics material is hot formed onto the cable in such a way as to embed this and remain rigidly connected thereto; then the mould halves are separated expelling the element thus formed and the cable is advanced in such a way as to bring a new section of cable between the mould halves; finally, a segment of cable, provided with the attachment element, is cut from the flexible cable.

Abstract: A process of molding a single-piece article by placing a resin body on a divider of a resin supply container containing different resins, fitting the resin supply container against a mold surface, engaging the resin body between the divider and the mold surface defining two discrete mold chambers, rotating the resin supply container and mold surface to contact the different resins against the mold surface, and heating the mold surface to simultaneously set the different resins and the resin body into a single-piece article.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid single wall inner tank by applying to at least a portion of the exterior surface of the inner tank a hardenable synthetic resin spacer material and forming in the spacer material one or more channels that provide for substantially free passage of liquids through the channels. A substantially imperforate film is stretched across the spacer material and over the one or more channels to separate the inner tank and the spacer material from subsequently applied sheathing material. A substantially rigid outer sheathing material that is substantially liquid-tight is applied over the inner tank exterior and the spacer material and the film overlying the spacer material such that the sheath is spaced from at least a portion of the inner tank exterior surface so as to provide a rigid double wall tank.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid single wall inner tank by applying to at least a portion of the exterior surface of the inner tank a plurality of spaced apart, generally parallel beads of a hardenable, viscous liquid synthetic resin spacer material to form, between adjacent beads, one or more channels that provide for substantially free passage of liquids through the channels. A substantially imperforate film is stretched across the beads and over the one or more channels to separate the inner tank and the beads from subsequently applied sheathing material. A substantially rigid outer sheathing material that is substantially liquid-tight is applied over the inner tank exterior and the beads and the film overlying the beads such that the sheath is spaced from at least a portion of the inner tank exterior surface so as to provide a rigid double wall tank.

Abstract: A body having a large number of protrusions is aligned with a honeycomb surface having a greater number of openings, selected openings being engaged by the protrusions when the body is aligned, by positioning the body against the honeycomb surface and vibrating it until the protrusions engage. The method is of particular use in aligning flexible masks to end faces of honeycomb structures in the fabrication of solid particulate filter bodies. Particular mask and honeycomb structure geometries are suggested for automation of the process.

Abstract: A method is described for manufacturing a rigid double wall tank from a rigid single wall cylindrical inner tank, in which a substantially rigid sheath is formed over a male mold which has a configuration generally similar to that of the inner tank and provides for molding of projections on the inner surface of such cylindrical sheath portion. The cylindrical sheath portion is then removed from the mold and introduced over the inner tank with the projections extending from the cylindrical inner surface of the sheath to the outer surface of the inner tank, and sheath end portions are applied to the axial extremities of that cylindrical sheath portion, forming a complete sheath enclosing the inner tank.

Abstract: An array of electrodes is presented for accurate and improved measurement of borehole resistivity. Electrode structures and methods of formation thereof are also presented.

Abstract: Method includes placement of rail-clamps in a concrete mould, while securing elements thereof on the outside of the mould. Concrete reinforcement members are placed on the clamps. A connecting rod is introduced through a mould opening and the mould thereafter is filled with concrete and treated by vibration.

Abstract: An article of manufacture comprises a molded-plastic fitment such as one of the halves of a snap fastener molded in situ to a porous substrate such as a garment fabric. Various embodiments are described for the article, as well as dies for forming the same, and methods and a machine for making the same.

Abstract: An injection mold comprises two or more mold sections, which enclose a cavity for molding an injection-molded part. The mold cavity is adapted to be supplied with the molding material through at least one entrance opening. The injection mold is maintained at a temperature at which the molding material is set. Said molding material is injected in a liquid state at a greatly differing temperature. To simplify the injection molding operation, to avoid damage by the removal of sprues, and to accelerate the manufacture,the molding material is injected through the entrance opening directly into the cavity by means of at least one injection nozzle. The injection mold comprises an injection nozzle having a nozzle tip which fits the entrance opening.

Abstract: In a method for continuously manufacturing slide fastener coupling elements, a molded strip of coupling element blanks is folded by a first folder unit about its longitudinal axis while still hot into a U-shaped cross-section to provide a folded strip of coupling element blanks each having a width larger than a predetermined width of each of the coupling elements as ultimately shaped. After having been heated by a hot-air blower, the hot folded strip of blanks is shaped by a second folder unit into slide fastener coupling elements of a finalized shape and dimensions through a plurality of bending stages in which the widths of the coupling element blanks are constricted stepwise by the second folder unit as the folded strip of blanks is fed therethrough.

Abstract: A cuvette set for blood analysis, comprising a carrier and guide band (2) for fixing the bottom parts of cuvettes (1) so as to build a row of cuvettes parallel to the band, said carrier and guide band (2) being provided with fastening means, such as holes (5) for a control device which carries the row of cuvettes through an analyzer. In order to produce a dimensionally accurate structure, said carrier and guide band (2) is made of a metal and it is provided with fastening means, such as holes (4) for engaging parts (3) protruding from the bottom of plastic cuvettes (1).

Abstract: A cylindrical pressure vessel housing a filter media wherein the vessel is formed from a tubular thermoplastic pipe portion having opposite conical shaped end portions integrally formed with molded internal base portions with one base portion having integrally molded thereto the filter media in sealed position within the vessel housing.

Abstract: Making a gas pressurizable closure for a splice region of a telecommunications cable in which plastic ends of the closure are molded in position by locating molds for the ends in axially spaced-apart positions one at each side of the splice region. While the cable is allowed to follow its natural path through and between the molds, the molds are held fixed relative to one another and aligned with one another and the plastic ends are molded. A shroud means of the closure is then located between and sealed to the plastic ends with the cable still following its natural path.

Abstract: A fastener comprising a female member having an opening, a male member which is engageable in the opening of the female member and a string member joining the female and male members, and a fastener assembly comprising a plurality of such fasteners joined together. The female and male members are molded from a thermoplastic synthetic resin, and fused to the string member. The fastener or fastener assembly is made by a method comprising placing a string through a female member forming mold and a male member forming mold, supplying a molten thermoplastic resin into the molds to form a female member and a male member, removing the molded female and male members from the molds, moving the string forward, repeating the molding of a plurality of female and male members, and if appropriate, cutting the string between the female member of one fastener and the male member of another.

Abstract: A method for manufacturing a sandwich wall panel by molding, formed from an inner bearing wall portion, an outer freely expandable wall and an insulating insert sheet, the wall portions being joined together by means of one of more elongate connecting elements and being held at a distance from each other by means of one or more rigid spacers interposed between the walls. Rigid spacers (11) are positioned at the bottom of a horizontal mold which have two opposite faces (12, 13) parallel to the bottom of the mold, as well as a slanting face (17) joining said opposite faces (12, 13) together and turned outwardly of the mold, each spacer (11) being held away from the bottom of the mold at a distance substantially equal to the thickness of the inner wall portion (15) by means of a support (27), the slanting faces (17) of the spacers (11) being all oriented in the same direction.

Abstract: A fixture (50) is used to precisely locate the horizontal (20, 30) and vertical (10) guideways on the bed (40) of a grinding machine. After locating the guideways (10, 20, 30), a bonding material (70) is placed in the spaces (1, 2, 3) between the guideways (10, 20, 30) and grinding machine bed (40). After the fixture (50) is removed, bolts (80) are tightened to apply a compressive force on the bonding material (70) located between the vertical guideway (10) and the machine tool bed (40).

Abstract: A method of manufacturing a bobbin in which a plastic flange is first insert molded to one end of a winding shaft of nonferrous metal alloy. A bushing of synthetic resin is the forced into a bore in the winding shaft at the other end thereof, and a core having a head is inserted into a bore in the bushing to close an open end of the bore in the bushing with the head of the core. The end of the winding shaft, an outer end of the bushing, and the head of the core are placed in a mold, and a synthetic resin material is injected through a sprue, a runner, and a gate in the mold into a cavity therein to mold a second flange on the end of the winding shaft therearound to obtain a bobbin having plastic flanges at both ends.

Abstract: A method for bonding molded components to films, sheeting or shaped members, in which the molded element is constituted of a plastic resin and filler, and is bonded to the sheeting or member. The sheeting or film or shaped member, or plurality thereof, and at least one prefinished but not yet hardened molding composition is introduced into a mold and maintained under a processing pressure and temperature for the hardening of the molded components. The preconditioned and still soft molding composition is directly bonded to the sheeting or film or shaped member in that the plastic resin of the molding composition is partially pressed outwardly during the molding operation so as to bond with the sheeting or shaped member, and thereafter cures or hardens.

Abstract: A method for adjusting blocks in the height which comprises laying over the top sides of the blocks an amount of a material which is hardenable and bindable thereon, with a height which is higher than the difference between said predetermined height and the actual height of the block under consideration, and levelling thereafter said material over said block sides before hardening thereof until the total block height formed by the sum of said block height and said material height, substantially corresponds to said predetermined height.

Abstract: A decorative emblem is formed by insertion of a decorative foil shape into a preformed bezel and encapsulating and bonding the foil to the bezel with a fluent, curable plastic material. After an initial casting of a measured amount of plastic onto the base of the bezel, the foil is inserted and seated. A second cast of plastic forms a cap contiguous with the sides of the bezel and encapsulates the foil and bonds it within the bezel. Upon curing, the plastic cap gives a lens effect to the decorative emblem. The emblem may be equipped with attachment means for fastening it to an automobile, appliance, or other object. In alternative embodiments, a decorative foil shape is placed directly onto the base of the bezel, and a fluent, curable plastic material is cast thereon. As the plastic material cures, it migrates around the edges and under the foil to at least partially encapsulate the foil and bond it within the bezel.

Abstract: There is disclosed a method of producing a multi-key structure for keyboard musical instruments. A molding material is filled in a mold to form a molded structure which has a proximal end portion and a plurality of juxtaposed key portions extending from the proximal end portion. Molding is carried out in a state that the respective adjacent key portions diverge toward their free ends. The molded structure is removed from the mold, and the proximal end portion is deformed in such a manner that the plurality of key portions are brought into parallel relation to one another to provide the multi-key structure.

Abstract: The continuous casting of scoops upon tapes for a sliding clasp fastener which includes two casting rollers with peripheral cavities and an extrusion nozzle with juxtaposed tapes introduced between the nozzle and a first one of the rollers. The arrangement is such that molten plastics is introduced by the nozzle firstly into the cavities of the first roller ahead of the nip between the rollers and subsequently into the cavities of the second roller adjacent the nip. To ensure adequate solidification of the scoops before removal from the second roller the tapes are drawn off from said second roller at an angular position thereof beyond the nip.

Abstract: In injection-molding a plastic workpiece about a prefabricated permanent insert, a first quantity of plastic material is injected into one or more first-shot cavities through which a portion of the insert extends, thereby forming a corresponding number of annular spacers around that portion. After the spacer or spacers have solidified, the spacer-carrying insert is transferred to a second-shot cavity in which each spacer holds the insert separated from the walls of adjoining cavity sections. A second quantity of plastic material is then injected into the second-shot cavity to complete the workpiece by forming a sheath around the insert incorporating the spacer or spacers which are steadying same against lateral movement due to the pressure of the injected second-shot plastic.

Abstract: Air filter elements employing a block of deep pleated paper and methods of their construction. A preferred filter element comprises top and bottom end members both adapted for through passage of air and a first pair of side walls, a block of deep-pleated paper between the end members and the side walls, connections between adjacent edges of the end members and the side walls, at least two connections being hinged and at least one connection being interengaging elements, sealing structure comprising a second pair of side walls and at least one flange around one end member, the material of which structure rigidifies the connections and forms a seal with the pleated paper. The sealing structure is formed preferably from an elastomer which solidifies in situ.In a preferred method of construction the first side walls are hinged up from the bottom wall around the pleated paper block and connected at the top. The second side walls and end flanges are then formed of elastomeric material.

Abstract: Methods for selectively plugging cells of a honeycomb structure for the fabrication of solid particulate filter bodies and other applications in which plugs are first formed at one end of all of the cells of the structure and then are removed from the ends of some of the cells by moving the plugs in those cells through the structure to their opposing ends or by removing those plugs entirely from the cells and the structure. The former method suitably positions plugs to form a filter body. The latter method must be repeated at both open end faces of the honeycomb structure in order to form a filter body. The latter method may be practiced by removing the plugs with a vacuum or by pushing the plugs out or through and out the structure. The invention also includes several apparatus embodiments for removing/moving a selected subset of the plugs formed in the same end portion of a multiplicity of cells of a honeycomb structure.

Abstract: A slide fastener stringer with coupling elements molded on inner edge portions of a tape has connecting portions molded through openings formed in the tape between upper and lower leg portions molded on the upper and lower sides of the tape. The openings in the tape are formed by displacement of tape material in the tape and setting of at least a portion of the displaced tape material in regions adjacent each of the openings to maintain the openings during the molding.