Abstract: The present invention includes clamp members, which preliminarily open a tubular label folded in a sheet; openable and closable expansion claws, which expand the preliminarily opened label; and a mounting, on which a bottle is mounted and which can rise and fall. The mounting on which the bottle is mounted rises, thereby inserting the bottle into the expanded label, and the expansion claws are removed from the label, thereby attaching the label to the bottle. A cam included in a rise and fall mechanism, which causes the expansion claw to rise and fall, includes: a fixed portion, of which a height position cannot be changed; a rise and fall portion, of which a height position can be changed; and a connection portion, which connects the fixed portion and the rise and fall portion so as to swing by following a rising and falling motion of the rise and fall portion.

Abstract: A wrapper assembly is disclosed that can be used, for example, to wrap a label around a wire. In the wrapper assembly, a pair of supports are spaced apart from one another and a plurality of rollers are disposed there between. The wrapper assembly further includes at least one yoke. Both the pair of supports and the yoke have positioning slots formed therein that support the rollers. By moving the yoke or yokes relative to the supports, the positioning slots in the yoke or yokes shifts relative to the positioning slots in the supports and thereby adjusting the positions of rollers relative to one another.

Abstract: Apparatus for use in preparing heterostructures having a reduced concentration of defects including apparatus for stressing semiconductor substrates to allow them to conform to a crystal having a different crystal lattice constant.

Abstract: A carbon substrate, method, and a system for manufacturing the same. The method includes forming an oxidized carbon precursor fiber preweb comprising oxidized carbon precursor staple fibers and binder staple fibers; impregnating the oxidized carbon precursor fiber preweb with a slurry including a thermosetting resin and carbonaceous fillers and drying the resulting preweb to obtain an oxidized carbon precursor fiber web; applying heat and pressure to the oxidized and impregnated carbon precursor fiber web, to cure the thermosetting resin and press the oxidized carbon precursor fiber web; and heating the oxidized carbon precursor fiber web in an inert atmosphere, thereby stabilizing and carbonizing the oxidized carbon precursor staple fibers to obtain a carbon substrate. The present invention may utilize a combination of carbon precursor staple fibers in an oxidized form with low ductility and high stiffness; and binder staple fibers composed of a polymer resin.

Abstract: A method and apparatus are provided which include providing a rotatable roller with a cylindrical surface adapted to wrap the donor element on the surface. A donor element is secured to the roller and a first portion of the donor element is wrapped onto the cylindrical surface while applying tension to the media. The tension is then decreased to alter a region of contact between the first portion of the donor element and the cylindrical surface. An additional portion of the donor element is then wrapped onto the cylindrical surface. The donor element is then transferred from the roller to a substrate.

Abstract: The present invention supplies practical procedures, functions or techniques for folding tessellations. Several tessellation crease pattern techniques, and the three-dimensional folded configuration are given. Additionally several new forming processes, including mathematical methods for describing the material flow are disclosed doubly-periodic folding of materials that name the doubly-periodic folded (DPF) surface, including vertices, edges, and facets, at any stage of the folding. This information is necessary for designing tooling and forming equipment, for analyzing strength and deflections of the DPFs under a variety of conditions, for modeling the physical properties of DPF laminations and composite structures, for understanding the acoustic or other wave absorption/diffusion/reflection characteristics, and for analyzing and optimizing the structure of DPFs in any other physical situation.

Abstract: An apparatus and method to manufacture shaped counter top edges for custom counter tops. Sheet laminate is heated, clamped to a post form mold with clamping screws, and then formed around the post form mold into formed laminate. The formed laminate is then bonded to a substrate using adhesive and a bonding fixture having a plurality of bonding presses. Each bonding press has a pair of mutually opposed bonding press molds, each bonding press mold having a bonding press mold groove sized to admit a formed laminate around an edge of the substrate. Clamps hold the bonding press molds together, thereby urging the formed laminate into intimate contact with the substrate until the adhesive cures. A counter top edge is cut from the resulting substrate/laminate assembly at an edge first cut angle and an edge second cut angle to provide a neat and aesthetically pleasing installation on a counter.

Abstract: A method for manufacturing a structural part including at least two wings extending in intersecting planes made of thermoplastic fiber-reinforced composite material including at least two plies of continuous fibers. The fibers extend from one wing to another. The method includes cutting the at least two plies in a fabric and/or a tape of fibers pre-impregnated with a thermoplastic resin; assembling the plies to create a preform; and compacting the preform to a final shape of the part by subjecting the preform to a defined cycle of temperature and pressure. A toolset can implement the method described above. Such a toolset includes a rigid punch and die such that closing the tool creates a sealed chamber in a shape of the part between the punch and the die.

Abstract: A wrinkle mitigation system may include at least one tooling rod disposed against a tool surface at a location on the tool where a composite ply is configured to overlap the tooling rod. The tooling rod may have an elongated shape and may be generally oriented along a direction of wrinkle formation in the composite ply. The tooling rod may have a rod width that results in the composite ply assuming a corrugated shape when compaction pressure is applied to the composite ply.

Abstract: A system and method for welding edge seams at the edges of fabric is presented. A method begins by lowering a fabric pre-fold bar onto a piece of fabric. A pre-aligned portion of the fabric is pushed on top of the pre-fold bar so that the pre-fold bar is between the portion of fabric on top of the fabric pre-fold bar and other fabric below the pre-fold bar. The fabric on top of the fabric pre-fold bar is folded edge fabric and fabric not on top of the fabric pre-fold bar is not folded edge fabric. A folded edge is formed between these two sections of fabric. The method pinches some of the fabric at the folded end and then pulls the folded edge fabric off of the fabric pre-fold bar. After that, the method welds at least some of the folded edge fabric to the not folded edge fabric.

Abstract: A cover for an airbag comprises a rigid panel having a portion forming a flap defined by a plurality of sides all formed as breakaway lines and one of which also forms a hinge. The cover is made of a thermoplastic laminate that is formed along the hinge with a fold.

Abstract: A machine (10) for manufacturing stackable laminations (4) for a magnetic core (6) is disclosed. The laminations are formed from a magnetic strip material (2). The machine (10) includes a first electromechanical cam drive for actuating a folder that folds the strip material (2) and a second electromechanical cam drive for actuating a cutter that cuts the strip material (2). The folder and the cutter are independently drivable between an uppermost position and a lowermost position. The folder may include a folder platen (130) having an associated folder bar (150) to fold said strip material (2). The cutter may include a guillotine platen (230) having an associated upper cutting blade (245) that cooperates with a fixed lower blade (255) for cutting said strip material (2). The electromechanical cam drive may include any suitable electric actuator (100,200) such as an electric motor.

Abstract: A sheet sticking apparatus 10 includes holding means 13 provided so as to be capable of holding an adhesive sheet S, and sticking means 12 that sticks the adhesive sheet S to an adherend surface W0 of an adherend W. The sticking means 12 includes a first sticking portion 15 capable of sticking a part of the adhesive sheet S held by the holding means 13 to a first sticking surface by pressure, and a second sticking portion 16 that sticks portions of the adhesive sheet S that have not yet been stuck by using the first sticking portion 15 to second sticking surfaces by pressure.

Abstract: A flexible mandrel 100 has a plurality of flexible elements 130 extending between two spaced flanges 110, 120. A means for adjusting the radial position of each of the flexible elements 130 along the length of the mandrel 100 between the flanges 130 enables the plurality of flexible elements 130 to be configured in a variety of symmetrical and asymmetrical forms. Conventional composite fiber or tape laying techniques may then be used to form one-piece, revolute, composite components. The flexible mandrel 100 can then be collapsed and withdrawn from the interior volume 202 of the formed component.

Abstract: A combined portable bias tape and covered piping cord making device. A spindle is rotatably disposed in a housing of a device for supporting a strip of material. Also, at least two folding tips are mountable in the housing—e.g., one for making bias tape and one for covering piping cord—each which can be separately mounted within the housing for making product. The device further includes a heated pressing assembly disposed in the housing for receiving and setting folded longitudinal edges of the strip of material. A cover is configured to enclose at least the spindle and part of the heated pressing assembly within the housing in the closed position. Multiple tips and/or parts can be interchanged depending on the size of the materials and/or the produced product (bias tape or covered piping cord).

Abstract: The invention relates to a device for producing a honeycomb structure from strip material comprising a supply and forming device, which forms a structured strip from the strip material and additionally determines a conveying speed of the structured strip, and a stop device comprising a feed channel, wherein the stop device is disposed downstream of the forming device such that the structured strip can be supplied to the feed channel, and wherein the honeycomb structure comprises a stop edge, which runs parallel to the feed channel, and wherein the stop device comprises a stop and stop means, which are designed in a movable manner such that the structured strip can be connected to a stop edge of the honeycomb structure.

Abstract: In case of manufacturing tear-off lids (28) out of lid rings (20?) with a tear-off foil (25) sealed on them and with a tear-off tab (29) the tear-off tab is fixed in a folded back position onto the tear-off foil of the lid by an adhesive patch (30). For this, the adhesive patch is applied onto the foil section in such a way that individual adhesive patches are separated out of an adhesive tape with a carrier tape and an adhesive material arranged thereon by a separating means. Such an adhesive patch is arranged on the foil section of each lid in a position where the folded back tear-off tab comes to lie. By this, a fixing of the tear-off tab can be reached in an economical and secure manner.

Abstract: A labeling applicator having a suction plate (21) including a pair of divided bodies (21b, 21c) movable relatively to two positions, i.e., a contact position (S) where the opposing end faces facing each other move toward contact while sucking a first surface side of a label (L) to which an RFID tag is attached and a separated position (V) where the opposing end faces are separated from each other, wherein a portion (2) of the label (L) is folded in a peak by the end faces of the divided bodies (21b, 21c) facing each other as a divided body (21c) moves, thus forming a folded portion (M) having a bend or curved position (7) on the proximal end, before labeling an article (W). A non-abutting portion (20) is provided by cutting the edge of each split body (21b, 21c) corresponding to the bend (7) on the proximal end of the folded portion (M) such that the end faces of the divided bodies (21b, 21c) do not abut when the end faces move toward contact.

Abstract: Substrates are aligned and then bonded to each other. A substrate bonding apparatus includes a deformer that deforms at least a first one of two substrates that are to be bonded to each other in order to correct misalignment between the two substrates, a holder that holds the deformed first substrate in the deformed state achieved by the deformer, a transporter that transports the holder from a position at which the deformed first substrate is held by the holder while the first substrate remains deformed, and a bonder that bonds the first substrate that has been transported by the transporter to the second substrate.

Abstract: A method for sheathing a light guide with a flexible layer of sheathing. The method includes providing a light guide and a sheathing strip. The sheathing strip is made of a flexible material. The method also includes joining the light guide and the sheathing strip using a forming aid to form a light guide-sheathing composite. The forming aid places the sheathing strip about the light guide, leaving two excess ends of the sheathing strip extending from the light guide. The method further includes feeding the light guide-sheathing composite to a connection unit and connecting the two excess ends to produce a mounting tab for the light guide-sheathing composite.

Abstract: A drive roller for a crop conveying belt has a cylindrical roller body having an outer surface surrounding an axis of rotation of the roller for engaging an inner drive surface of a canvas wrapped therearound. The roller has a plurality of raised spaced elements such as ribs formed of a hard wear resistant material such as carbide clad onto the outer surface metal of the roller body. The ribs extend along a part only of the body at the two ends in an axial direction and angularly spaced around the outer surface. The ribs have a height less than 6 mm and a width less than 6 mm arranged such that the ribs do not engage into any recesses in the drive surface of the belt.

Abstract: A method for conveying crop has a crop conveyor belt driven by a drive roller with a cylindrical roller body having an outer surface surrounding an axis of rotation of the roller for engaging an inner drive surface of a canvas wrapped therearound. The roller has a plurality of raised spaced elements such as ribs formed of a hard wear resistant material such as carbide clad onto the outer surface metal of the roller body. The ribs extend along a part only of the body at the two ends in an axial direction and angularly spaced around the outer surface. The ribs have a height less than 6 mm and a width less than 6 mm arranged such that the ribs do not engage into any recesses in the drive surface of the.

Abstract: To close the tail end (L) of the web material forming the log (R) there is provided mechanical ply-bonding between the tail end and a portion of the last turn of web material, preferably a portion forming a fold (F) projecting from the log.

Abstract: A method and a device for producing fiber preforms which are, for example, a precursor in the production of fiber reinforced plastic components, are disclosed. The method includes the steps of tensioning the threads or rovings, draping the threads or rovings over a molding tool and attaching the threads or rovings to a fiber preform. A plurality of separate grips grip individual or a plurality of threads or rovings at a plurality of thread transfer points allocated respectively to the individual grippers. The grippers are then moved in substantially parallel paths relative to each other and the threads or rovings are thereby tensioned side by side.

Abstract: A first substrate advances in the first direction and a second substrate advances in the second direction. The first substrate advances onto an outer circumferential surface of a drum in a stretched state. The first substrate may be cut into discrete lengths of elastic substrate. The drum may be configured with vacuum to hold the discrete length of elastic substrate in a stretched state. The second substrate may advance in the second direction by a conveyor. The conveyor includes a roller having a curved outer surface that deforms the second substrate so as to define a curve in the first direction. A tamper apparatus intermittently displaces a deformed portion of the second substrate into contact with a discrete length of elastic substrate on the outer circumferential surface of the drum. The discrete length of elastic substrate bonds with the second substrate and is removed from the drum.

Abstract: A contoured composite part is made by assembling a preform charge, including aligning a plurality of plies along a preselected contour. The assembled aligned preform charge is then placed in a forming tool, where the charge is formed and cured.

Abstract: Provided is a system and method of making a door having first and second door skins and an internal frame. The top and bottom surfaces of the frame are coated with an adhesive and the frame is placed on a first door skin. The second door skin is then placed on the opposite surface of the frame. The assembled components are then pressed to bond the first and second door skins to the frame with a press having upper and lower dies configured to impart a larger compression force toward a central area of the door skins. Wear resistant belts or membranes are provided to protect the door skins from being marred by the upper and lower dies during the pressing process.

Abstract: A method for the manufacture of an integrally reinforced lightweight structure with a fiber-reinforced plastic by a molding tool, the structure having stiffening ribs crossing one another at node points and a skin attached to the stiffening ribs. The molding tool has channel-type depressions for creating the stiffening ribs. The steps include laying down into the depressions at least one intermediate layer and at least one reinforcement layer, repeating the laying down until the depressions are at least partially filled with intermediate layers and reinforcement layers to form the stiffening ribs with integral connecting feet, populating the molding tool with intermediate layers and reinforcement layers for manufacturing the skin, and curing and/or solidifying the intermediate layers and reinforcement layers. A resulting lightweight structure and a device for the manufacture of the lightweight structure are also disclosed.

Abstract: The present disclosure relates to converting lines for manufacturing absorbent articles, and more particularly, to converting lines having modular process equipment modules and converting mechanisms reconfigurable for making different absorbent articles.

Abstract: A method for producing a curved section piece from a rectilinear preform of preimpregnated fibre layers includes stacking layers on a deformable mandrel and winding the mandrel and bending the stacked layers on a bending tool on a rotation axis in a single phase and polymerizing the bent layers. The section piece includes a stack of N layers, at least a first portion of which is placed in a plane perpendicular to the rotation axis (X) and at least one second portion parallel to the axis (X) including at least one layer of fibres oriented at 0° along the length of the perform. The N fibre layers are stacked on the mandrel. A neutral fibre is placed on a portion of the mandrel closer to the rotation axis (X) than the last layer of fibres oriented at 0° stacked on the second portion parallel to the rotation axis (X).

Abstract: The invention relates to a machine (1) and a method for producing a cup (100) from an outer shell (101) and inner cup (102). For this purpose, the machine (1) comprises a plurality of first holding devices (2) that are arranged on a first rotatably housed star- or wheel-like holding device carrier (3), and a plurality of second holding devices (4), arranged on a second rotatably housed star- or wheel-like holding device carrier (5). Further, a first working station arranged at least in the region of the first holding devices (2) for carrying out working steps (A1 . . . A4) and at least one second working station arranged in the region of the second holding devices (4) for carrying out working steps (B1 . . . B5) are provided. Finally, the machine (1) comprises a transfer station (6) for transferring (A4, B1) a finished outer shell (101) from a first holding device (2) to a second holding device (4).

Abstract: The invention relates to a method for roll-bending a profile which comprises at least one cross-sectional region which is formed from a plastics material which is shaped by extrusion. A first and a second bending roller set are provided, each including bending rollers which are arranged in such a way that a passage, which enables guiding of the profile, is formed between the bending rollers of each of the bending roller sets. The profile is bent about a first bending axis and about a second bending axis which is non-parallel thereto, the translations and rotations of the second bending roller set being brought about simultaneously at least at times and/or mutually offset in time in a predetermined sequence.

Abstract: A composite pipe and method of manufacture comprises an inner core made of a resinous material, a prepreg material helically wound about the inner core and an outer shell covering the wound prepreg materials. The materials are applied at preselected melt temperatures to assure coherence among the materials and preclusion of voids and/or annuli therebetween. A cooling of the inner pipe core during initial application of the tape layer of prepreg materials stabilizes the radial configuration of the pipe core during tape wrapping and thus the appearance of undesirable voids and/or annuli in the composite pipe mass.

Abstract: A web conveying apparatus configured to convey a pair of webs folded in the cross direction CD with reference to a folding line. The web conveying apparatus includes a crotch hold bar configured to hold an intermediate web in a conveyable manner with the folded intermediate web stretched in a direction in which the crotch portions get away from the waistline portions; and a conveying mechanism configured to convey the intermediate web and hands over the intermediate web to a joint apparatus and a cutting apparatus, while the crotch portions are being held by the crotch hold bar.

Abstract: The invention relates to a device and a method for arranging double-sided adhesive foil on a cylindrical holder for a flexible printing plate, wherein the device comprises a frame, at least one shaft bearing placed in the frame for bearing-mounting of a shaft connected to the cylindrical holder, and foil roll bearings for a roll of foil, and a support plate with a support surface for the foil, and the projection of the axis between the foil roll bearings onto the support surface extends at an angle differing from 0° relative to the projection of the axis between the shaft bearings onto the support surface. The projection of the foil axis onto the support surface preferably extends transversely of the projection of the axis. The foil is hereby moved in the direction of the axis of the shaft bearings and the foil is fixed in this direction on the cylindrical holder.

Abstract: Provided is a manufacturing method for absorbent products that has a process for placing on connected rectangular flaps that are continuously conveyed on a flap line fastening members that are fastenable on both sides to prescribed areas near center line that is parallel to the MD-direction, a process for forming a cutable line along the center line that can divide the connected flaps in two, a process for forming flaps by cutting the connected flaps along the CD-direction on the flap line, and a process for placing the flaps on connected front torso-surrounding member or back torso-surrounding member or on the main body line so that center line is orthogonal to the MD-direction of the main body line.

Abstract: A manufacturing method of metal-glass composite material is disclosed. The manufacturing method of the metal-glass composite material includes following steps: coating one surface of a glass plate with an adhesive material; placing a metal plate and the glass plate in a press mold, wherein the surface of the glass plate with the adhesive material corresponds to the metal plate; and pressing the glass plate and the metal plate by the hot-press mold to make them attach to each other. A manufacturing system of the metal-glass composite material is also provided.

Abstract: To close the tail end (L) of the web material forming the log (R) there is provided mechanical ply-bonding between the tail end and a portion of the last turn of web material, preferably a portion forming a fold (F) projecting from the log.

Abstract: An apparatus for manufacturing a roller includes a loading plate, a polishing device, a processing device, a hot pressing device, a mounting device, and a cutting device. The loading plate loads a preprocessed metal plate having a preprocessed molding surface. The polishing device polishes the preprocessed molding surface to obtain a polished molding surface. The processing device forms molding patterns on the polished molding surface to obtain a metal plate with a molding surface defining the molding patterns. The hot pressing device forms impression patterns on a preprocessed resin film to obtain a resin film by pressing the metal plate and the preprocessed resin film together. The mounting device mounts the resin film to a rolling surface of a main body until the resin film winds around the rolling surface. The cutting device cuts the resin film.

Abstract: An apparatus for folding and applying a fold-under label to a substrate comprises a folding station having a stop and a folding arm. The apparatus further comprises an application station having an affixing member. The folding arm is configured to fold the fold-under label by transitioning from a first position adjacent the stop to a second position adjacent the affixing member. The affixing member is configured to apply the folded fold-under label to the substrate by transitioning from an initial position to a final position.

Abstract: A bat is created using efficient and automated techniques to apply layers of composite materials onto a mandrel. The system includes a plurality of rotating wrapping mechanisms binding stages. Each wrapping mechanism rotates along a central axis while a mandrel is driven through the axis. The rotational motion allows each wrapping mechanism to wrap one or more material strips along the outer surface of the mandrel. Between each wrapping layer, a binding material such as fusible thread may be applied to fuse wrapping layers together. The wrapping may be performed for the bat barrel and bat handle. Each mandrel may form two bats, and multiple mandrels can be connected together to maximize wrapping efficiency. The wrapped mandrels are separated into bat units, a resin transfer molding is performed, and the bats are completed.

Abstract: A nozzle plate holding device having a holding section which holds a nozzle plate arranged with a plurality of nozzles, and the nozzle plate holding device being used for bonding the nozzle plate, while the holding section holds the nozzle plate, onto a head chip arranged with a plurality of channels, wherein the holding section is configured to be capable of causing a distortion deformation of the nozzle plate in a direction that is parallel to a surface of the nozzle plate and crosses a length direction of the nozzle plate.

Abstract: A method is presented for making a composite material from strips comprising longitudinal fibers and a binder or resin, which material comprises a number of layer assemblies one on top of the other. Each layer assembly comprises m sets (with m at least 2) of parallel strips each extending in a different direction, Each layer assembly is manufactured by successive steps of depositing groups of parallel strips according to a well defined pattern (without longitudinally interweaving strips with previously deposited strips). Before completing a layer assembly, with the exception of the last layer assembly, by depositing its last group of parallel strips, the first group of parallel strips of the following layer assembly is already deposited. A composite material manufactured with such a method is presented too.

Abstract: The present disclosure is drawn to a lattice support structures and methods of making such structures, including tooling and articles used therein.

Abstract: An aspect of the present embodiment, there is provided a method for fabricating a semiconductor device including placing a semiconductor substrate, onto which a BSG tape bonded via a supporting substrate, on a stage placed a peeling tape in a state that an adhesive surface of the peeling tape is oriented upwards and the BSG tape is oriented downwards to the stage, bonding the peeling tape onto the BSG tape in a state that the BSG tape is retained to be oriented downwards and placed on the adhesive surface of the peeling tape, drawing the peeling tape to a lower side of the stage to peel the peeling tape in a state that the peeling tape is retained to be bonded onto the BSG tape, and supporting the supporting substrate exposed from the BSG tape in the drawing of the peeling tape.

Abstract: A method for forming an undergarment comprises cutting a web to form a pre-form comprising transverse edges and two longitudinal edges, each longitudinal edge having two waist sections and a crotch section located intermediate the waist sections, a sealing area located adjacent and inboard of each waist section, and transferring the pre-form to a processing wheel. The method further comprises gripping the pre-form adjacent each waist section with grippers in four gripping areas, each gripping area located near a respective sealing area, jointly rotating the grippers that hold the gripping areas in the region of one of the transverse edges around at least one hinging axis to place the transverse edge generally parallel and opposite to the second transverse edge, superimposing the sealing areas in a contacting relationship, joining the superimposed sealing areas, thus forming the undergarment, and releasing the undergarment from the grippers.

Abstract: A method for manufacturing coated profile members (10), wherein a foil (16, 36) is cut to a predetermined width and wrapped around the profile member so as to form a butt seam extending in a longitudinal direction of the profile member, and the foil (16, 36) is cut by a cutting beam (24) in a condition in which an edge strip of the foil projects beyond the profile member (10), while a face of the profile member is used as reference for the position of the cutting beam.

Abstract: A permeable material compacting method includes, feeding permeable material between at least one set of rollers, decreasing a thickness of the permeable material, and wrapping the permeable material around a mandrel in a helical fashion.

Abstract: An example includes a method for forming tubular lengths of web material. The example can include winding a portion of web material in a tubular configuration such that opposite vertical ends of said linear portion overlap. The example can include welding said overlapping ends to fix said linear portion of web material in sleeve configuration. This welding can include heating up at a first temperature a first region of said portion over the whole of which said ends overlap and heating up at a second temperature lower than said first temperature a second region of said portion adjacent to said first region, said ends of said portion of labelling web material overlapping over only a part of said second region. One or more examples relate to a forming unit configured to implement the method outlined above.

Abstract: An example includes a method for forming tubular lengths of linear web material. The example can include winding a portion of linear web material in a tubular configuration such that opposite vertical ends of said linear portion overlap. The example can include welding said overlapping ends to fix said linear portion of linear web material in sleeve configuration. This welding can include heating up at a first temperature a first region of said portion over the whole of which said ends overlap and heating up at a second temperature lower than said first temperature a second region of said portion adjacent to said first region, said ends of said portion of linear web material overlapping over only a part of said second region.