Abstract: A device for delivering an implant to a surgical location of a patient is provided. In some embodiments, an example device includes a polymer body having first and second tapered sections and a sealed cavity defined by the polymer body. The polymer body is separable between the first and second tapered sections.

Abstract: The invention relates to a receptacle (10), in particular a flexible bag (10) made of paper, with a front part (20), a back part (30) and a bottom (50), which is closed by a bottom unit, and with an opening (1) lying opposite the bottom (50), wherein the bottom unit has a bottom portion (120) of the front part (20) and a bottom portion (130) of the back part (30), the bottom portion (130) of the back part (30) is shorter than the bottom portion (120) of the front part (20), such that the bottom portion (120) of the front part (20) is secured directly on the back part (30) by turning the bottom unit (100) back along a fold line (101), and the opening (1) is formed by a peripheral edge (2) which extends at a height of the front part (20) and of the back part (30) and which is at least partially frayed, thereby reducing the danger of injury at the edge (2).

Abstract: A feeding unit from reels of sheet-like material , in particular but not exclusively printed plastic film with print-position marks for automatic packaging machines, comprising two unrolling shafts of respective reels of material for feeding in turn said material towards a unit that cuts and welds the tail of material of a running out reel and the head of a fresh, loaded reel. Such a unit comprising suction, cutting and welding devices (7, 8) movable so as to approach and move away from each other to press the material (F1, F2) over a welding plane. Each device is formed by a group of mutually stacked suction and cutting modules, at least two of such modules having respective guides for slidable in a transversal direction with the respect to the feeding direction of the material, whereby it is possible to select and adjust the number of modules according to a desired welding height.

Abstract: A station (S) of application of segments of opening/closing strip on plastic web films suitable to form bags, comprising punching means (U14, U22) of predefined areas of the plastic film for the access to areas of the segments through the film, and welding means (U15, U23) of the strip segments at intervals on the plastic film, wherein the punching means (U14, U22) and the welding means (U15, U23) are positioned along the flow path of the film to act in sequence on the same area in order to, respectively, punch the film and weld the segments in the predetermined points of the plastic film.

Abstract: The requirement consists in designing and producing a packaging container for bulk materials, in particular sacks or bags, made of a flexible plastic film with a venting facility, in a particular simple manner. This requirement is met in that the flexible plastic film is designed, at least in a partial area, in two layers, in that the inner layer of the plastic film comprises inner venting openings, in that the outer layer comprises outer venting openings and in that the inner venting openings and the outer venting openings are spaced apart from each other.

Abstract: The invention relates to a device for forming sleeve-like foil envelopes from a flat strip of foil material (12), at least comprising supply means (10) for supplying the flat strip of foil material; cutting means (20) for cutting the strip of foil material through over the entire width thereof so as to obtain a foil envelope strip of a specific length having a first and a second free edge (120a, 120b); at least one enveloping unit, around which the foil envelope strip is to be wrapped; joining means disposed near said enveloping unit for joining said first and said second free edge together, so as to obtain a sleeve-like foil envelope; as well as discharge means for discharging the sleeve-like foil envelope thus formed from the enveloping unit.

Abstract: Systems and methods to form openings in water soluble packets are described. The system includes a packet forming assembly to form water soluble packets, and a laser to form one or more openings in the water soluble packets. The method includes forming openings in the water soluble packets with a laser. The openings permit air to escape from the packets. By allowing air to escape, the water soluble packets have improved packaging characteristics. The water soluble packets are packed more tightly with a product.

Abstract: An envelope design and processes for manufacturing said envelopes is disclosed herein. The disclosed envelopes have an integrated and removable label portion secured within a panel of the envelope by an adhesive liner. The envelopes may be manufactured by die-cutting the label portions in a paper web, applying the adhesive liner to one side of the paper web covering the die-cut label portions, die-cutting an envelope blank from the paper web, and forming a folded envelope from the blank.

Abstract: A bottom-gusseted package comprises a package body, and a bottom gusset positioned transversely of a longitudinal axis of the package body. A top sleeve portion of the package body can be configured to include a recloseable fastener, a dispensing spout, or an upper package seal. Formation of the bottom-gusseted package is effected by positioning individual sleeves transversely of the longitudinal axis of a flexible web which forms the package body. During package formation, the flexible web is cut to form individual packages, and each individual sleeve can be cut to form a bottom gusset in one package, and a top sleeve portion in an adjacent package.

Abstract: A method for single pass printing of mailer envelopes and contents includes: providing an envelope with an open window in the envelope; inserting a sheet into the envelope having an unprinted region so that the unprinted region is exposed through the window of the envelope; feeding the envelope into a printer; and printing a first customer-specific data (such as an address) on the envelope and a second customer-specific data (such as a barcode) on the exposed region of the sheet. The printer may be an inkjet printer so that the data is printed in a single pass, without removing the envelope from the printer.

Abstract: A web of expandable bags, a method for forming a web of expandable bags, and a method of forming an expandable bag containing a product is provided. The web of expandable bags includes a plurality of connected bags. Each bag includes a front ply and a back ply, and each bag is connected to an adjacent bag by a perforated connection. The front and back plies are joined to define a compartment that includes a first side, a second side, a third side that extends between the first side and the second side, and a bag opening that is configured to be closed. The front and back plies include a plurality of slits, and the plurality of slits are arranged in a plurality of spaced apart rows. The plurality of slits allows the compartment to expand in a direction that is perpendicular to the arrangement of the plurality of slits.

Abstract: An embodiment of the invention provides a band having an elongated body portion including a first end and a second end, a first fastener on the first end, and a complementary second fastener on the second end for releasably engaging the first fastener. The band further includes a flap cut out from the elongated body portion, wherein the flap has an aperture dimensioned to receive a display hook. The band includes at least one upper fold and at least one lower fold. The upper and lower folds segment the elongated body portion into a front segment, an upper back segment, and a lower back segment. The front segment lies in a first plane, and the upper and lower back segments lie on a second plane substantially parallel to the first plane. The flap is cut from the second plane and lies on the first plane.

Abstract: The present invention provides a method of forming a coating on a porous sheet, comprising the steps of: providing a porous sheet and a dispersion comprising at least one polyolefin; applying said dispersion on at least one surface of said sheet; and optionally, heating said sheet to a temperature above the melting temperature of said at least one polyolefin. Moreover, the present invention relates to methods for manufacturing single and two ply sacks and the use of at least one polyolefin as a water vapour barrier coating on a material suitable for a ply of a sack.

Abstract: A coupon envelope with an enclosed coupon is provided. The coupon envelope has three sections. Each section has a first side and a second side. The first and second sections each have an upper portion, a lower portion, a cut separating the two portions, and a nick connecting the two portions. The third section has a coupon portion, an upper portion, a lower portion, a cut separating the three portions, an upper nick connecting the coupon portion and the upper portion, and a lower nick connecting the coupon portion and the lower portion. The coupon envelope also has a second side attachment and a first side attachment. The second side attachment attaches the second side of the third section to the second side of the second section. The first side attachment attaches the first side of the third section to the second side of the first section.

Abstract: A mandrel assembly for use in shrink sleeve labeler machines includes a replaceable insert having a cutting slot that is spaced apart from both upper and lower elements of the mandrel assembly.

Abstract: A sleeve has an open top and side edges. One or more handles are defined by perforations that extend inward from the side edges and can terminate with a stress concentration-reducing shape. The handles may be tapered. The handles may include a reinforcing weld formed by an extension of the bottom seal of adjacent, oppositely oriented sleeves.

Abstract: A system for processing a continuous web of envelope stock includes a web aligner, infeed nip including a load cell, rotary cutter, gummer, patch applicator, buffer, and control system. Gummer nozzles are actuated to apply patterns of adhesive to the moving web in surrounding relation to window apertures. A method for controlling the web output rate from the system includes receiving at the control system an input web tension indicator from the nip load cell, receiving an output web tension indicator from a transducer at system output, comparing the received indicators and transmitting a control signal to actuate a roller assembly between the infeed nip and the transducer to increase or decrease speed to adjust web tension. The control system also transmits a web input speed control or stop signal based on the calculated capacity percentage of web accumulated in the buffer, which is determined with reference to a threshold value.

Abstract: A carrier and a method for making a carrier with handles between rows of containers in both two-wide and three-wide configurations, and with the handle portion and container holding portion formed from different sheets connected together.

Abstract: A process produces web sections from a flexible web material. The flexible web material is provided with tear-off lines at the distance of the length (L) of the web sections to be formed, which tear-off lines weaken the web material but do not bring about a complete separation of the web sections from the web material. The web sections are separated from the web material along the tear-off lines by tearing. The web material comprises a fabric made of small stretched plastic bands, and the tear-off lines are produced by laser beam processing.

Abstract: A method and apparatus for making a stepped end on a tube of flexible material includes a tube slitting station having a slitting tool with double edge slitting blades penetrating through the tube to provide respective slits beside a first panel and beside a second panel, respectively; a first trimming station trimming a first panel of the tube to a first shortened length, a second trimming station trimming the side gussets to a second length, wherein the second length is longer than the first shortened length of the first panel; and an adhesive applying station applying adhesive on the tube above and below a fold line across the tube, wherein the tube is adapted to be folded along the fold line, and the adhesive material is adapted to form an adhesive to adhesive seal above and below the fold line while the tube is folded to provide a closed stepped end for a bag.

Abstract: An easy-open and reclosable package includes a pouch including a reclosure mechanism including a first and second interlocking strip each having an interlocking segment having a base surface and an interlocking surface; a die cut in a first panel, the die cut defining a die cut segment so arranged that when the die cut segment is displaced, and the package is opened, a product can be accessed between the first and second interlocking strips, the first and second interlocking surfaces are at least partially exposed, and the package can thereafter be reclosed by folding the package such that the interlocking surface of the first interlocking strip is interlocked with the interlocking surface of the second interlocking strip. The first and second strips are not exposed until the package is initially opened, and are not interlocked with one another until the package is initially opened and then reclosed.

Abstract: A woven laminated plastic bag having an easy open feature is provided. The easy open feature is generally defined by a weakened portion in the bag. In various aspects the bag can be fabricated from woven polypropylene and/or polyethylene layer which can be laminated with a film layer, can form a pinch bottom bag, and can have one or both sides include graphics and/or printing. The bag can also provide a top end and/or a bottom end either or both of which provide a discrete area which may contain discrete graphics and/or printing.

Abstract: A three-dimensional structure composed of pliable elements and having affixed seams is provided. The structure may comprise duffel bags, backpacks, shoe uppers, etc. The structure has a bottom panel with a first terminal bottom portion and a first end panel with a terminal end portion. As well, the first terminal bottom portion and the terminal end portion are affixed to each other in a flattened, two-dimensional arrangement by a variety of attachment methodologies including a thermoplastic elastomer strip. Two-dimensional construction saves time and helps to reduce manufacturing costs.

Abstract: The present invention encompasses principally a method of permitting packaging of one or more piece goods in one or more bag units, where said bag units are, in a selected transport direction, oriented after one another and mutually united with the aid of two, each arranged bag side allocated, thickened portions. A first means (1) is disposed whereby each one of said bag units, from a folded and/or united state, becomes openable by causing said respective bag side allocated thickened portions to pass along a distance from one another oriented rails or similar arrangements. A second means (2) is disclosed in order to, in thus opened bag units, allow insertion of one or more piece goods (G). A third means (3) is utilized, whereby each one of said bag units is sealed along a sealing zone, in order thereby to allow the enclosure of said one or more piece goods. A fourth means (4) is adapted to clip and/or cut off a sealed bag through or above said sealing zone, however under said thickened portion.

Abstract: A pouch for holding fluids is provided. The pouch includes a pouch body having a front panel and a back panel. The front panel is formed of a transparent material and includes a second indicia visible from the front of the pouch. The back panel includes a third indicia visible from the back of the pouch. The back panel includes a first indicia disposed one of the layers of the back panel and configured to be visible when the pouch is viewed from the front so as to block out the third indicia from view. A method of manufacturing a pouch is also provided. The method is directed towards facilitating the alignment of a graphical image on one side of the back panel with a graphical image on another side of the back panels in instances where the back panel is formed of multiple layers.

Abstract: A bag including a containment portion having an opening to receive items, a bag seal at an end of the bag opposite the opening, a handle seal at an end of the containment portion opposite the opening, the handle seal located between the bag seal and the opening, and a handle in a handle body formed between the handle seal and the bag seal.

Abstract: An apparatus for simultaneously separating a portion of a continuous web of film, having a leading edge and a plurality of spaced apart side seals, includes a base, a plurality of blade pairs, and a film guide device. The blade pairs are moveable between an open and closed positions and are mounted to the base and spaced apart a distance corresponding to the side seals in the film. The film guide device includes a guide member that releasable attaches to a portion of the film adjacent the leading edge. The guide members suspends the film between the plurality of blade pairs in the open position to align the plurality of seals on the film with the plurality of spaced apart blade pairs to accurate separate the film into a plurality of pouches upon movement of the blade pairs to the closed position.

Abstract: A machine for making bags is disclosed and includes input, drum, and output sections. The drum section has at least one seal bar on a drum. The sections are mounted to side frames that are single metal plates. The frames are not coated after being formed and/or are comprised of at least one of galvanized steel, galvannealed steel, stainless steel or aluminum. The drum is comprised of first and second plates, and opposing third and fourth plates. The first plate is rotatable with respect to the second plate, and the third plate is rotatable with respect to the fourth plate. The distance from the seal bars to the center of the drum is responsive to the rotation of the plates. The first plate has a plurality of non-radial grooves, and the second plate has a plurality of radial slots, with fixtures in the slots and grooves. The fixtures are connected to seal bars. The non-radial grooves are curved and/or spiraled. The plates are comprised of zinc plated steel and/or are discs.

Abstract: A method for manufacturing a paper product having a transparent window having the steps of: flattening two rectangular strips in the paper, cutting out a substantially rectangular window between the two rectangular strips, the window extending into the two rectangular strips. A substantially rectangular transparent material is placed over the window; the material has a greater length and a greater width than the window.

Abstract: Disclosed is a sealing and cutting unit with a sealing device and a cutting device. The latter is assigned with hold-down means positioned downstream of the cutting device in the direction of transport of a film to be sealed and to be detached.

Abstract: An easy-open and reclosable package includes a pouch including a discrete laminate including a base strip and a panel section; a first and second anchor seal; the base strip including a sealing segment, backing segment, and intermediate layer including a pressure sensitive adhesive; and a product in the pouch. The inner surface of the panel section has a sealant. When the package is opened, the sealing segment is at least partially removed from the base strip, the pressure sensitive adhesive is at least partially exposed, and the package can thereafter be reclosed by adhering any of a first side panel, second side panel, and panel section to the pressure sensitive adhesive. Methods of making the package, and a pouch, are also disclosed.

Abstract: A method and apparatus for making a stepped end on a tube of flexible material includes a tube slitting station having a slitting tool with double edge slitting to provide respective slits beside a first panel and beside a second panel, respectively; a first trimming station trimming a first panel of the tube to a first shortened length, a second trimming station trimming the side gussets to a second length, wherein the second length is longer than the first shortened length; and an adhesive applying station applying adhesive on the tube above and below a fold line across the tube, wherein the tube is adapted to be folded along the fold line, and the adhesive material is adapted to form an adhesive to adhesive seal above and below the fold line.

Abstract: An easy-open and reclosable package includes a pouch including a discrete laminate including a base strip, a panel section, and a die cut defining a die cut segment; a first and second anchor seal; the base strip including a sealing segment, backing segment, and intermediate layer including a pressure sensitive adhesive; and a product disposed in the pouch. The die cut segment is so arranged that when the package is opened, the sealing segment is partially removed from the base strip, the pressure sensitive adhesive is partially exposed, and the package can thereafter be reclosed by adhering any of the first side panel, second side panel, and panel section to the pressure sensitive adhesive. Methods of making the package, and a pouch, are also disclosed.

Abstract: The invention relates to a packaging for flexible sheet materials, comprising a bottom layer and a top layer whose edges are superposed, made of flexible, sheet material with a bursting strength of at least 120 kPa, where a) the top layer and the bottom layer are joined to each other along at least 50% of their superposed edges, based on the total length of the superposed edges, b) at least one segment of the edges which are joined to each other is joined together in a segment-like fashion, and c) a further section of the superposed edges is provided as an opening for introducing the flexible sheet material.

Abstract: A plurality of stacked polyethylene film bags comprising about 40-48 wt. % high density, high molecular weight polyethylene, 12-20 wt. % high density, medium molecular weight polyethylene, 20-30 wt. % linear low density polyethylene, 0-8 wt. % color concentrate, are releasably adhered together in substantial registration. Each of the bags includes front and rear polyethylene film walls and each of the front and rear walls have first and second side edges, a top edge and a bottom edge. The front and rear walls are integrally joined at their first and second side edges and secured together at their bottom edges. An open mouth portion is defined adjacent the top edges of the bag. At least an upper portion of the outer surface of the front and rear walls of each of the bags has been corona treated. T-shirt style bags using the above formulation are also described.

Abstract: A feeding unit from reels (B1, B2) of sheet-like material (F1, F2), in particular but not exclusively printed plastic film with print-position marks for automatic packaging machines, comprising two unrolling shafts (1, 2) of respective reels (B1, B2) of material (F1, F2), for feeding in turn said material towards means (7, 8) for cutting and welding the tail of material of a running out reel (B1) and the head of a fresh, loaded reel (B2). Such means comprise suction, cutting and welding devices (7, 8) movable so as to approach and move away from each other to press the material (F1, F2) over a welding plane (Z). Each device is formed by a group of mutually stacked suction and cutting modules, at least two of such modules having respective guides for cutting means slidable in a transversal direction with the respect to the feeding direction of the material, whereby it is possible to select and adjust the number of modules according to a desired welding height.

Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.

Abstract: A method and apparatus for making a stepped end on a tube of flexible material includes a tube slitting station having a slitting tool with double edge slitting blades penetrating through the tube to provide respective slits beside a first panel and beside a second panel, respectively; a first trimming station trimming a first panel of the tube to a first shortened length, a second trimming station trimming the side gussets to a second length, wherein the second length is longer than the first shortened length of the first panel; and an adhesive applying station applying adhesive on the tube above and below a fold line across the tube, wherein the tube is adapted to be folded along the fold line, and the adhesive material is adapted to form an adhesive to adhesive seal above and below the fold line while the tube is folded to provide a closed stepped end for a bag.

Abstract: An envelope design and processes for manufacturing said envelopes is disclosed herein. The disclosed envelopes have an integrated and removable label portion secured within a panel of the envelope by an adhesive liner. The envelopes may be manufactured by die-cutting the label portions in a paper web, applying the adhesive liner to one side of the paper web covering the die-cut label portions, die-cutting an envelope blank from the paper web, and forming a folded envelope from the blank.

Abstract: A system comprising using at least one recycled plastic to create a polymer film, infusing the film with at least one color additive, infusing the film with at least one scent additive, infusing the film with at least one dormant microbe, cutting and folding the film to create at least one bag, using the bag as a shopping bag, using the bag as a trash bag, and activating the microbe to decompose the bag. The system wherein the bag further comprise at least one handle adapted to receive at least one tongue, at least one polymer film is selected from the group consisting of low density polyethylene and equivalents, and the dormant microbe is infused onto the film by a method selected from the group consisting of spraying, and equivalents. Wherein the dormant microbe is selected from the group consisting of Pseudomonas, Sphingomonas and combinations thereof.

Abstract: An envelope for direct mail marketing with an integrated component that may be peeled out to reveal a transparent polyester-like splittable laminate, allowing the recipient to view the contents of the envelope. The removed component may serve as a coupon, label, tag, or other useful component. The removable component may also be affixed to the inner surface of the envelope to be viewable by the recipient.

Abstract: The disclosure describes a device for inflating and cutting a material web. The device can include a web advancement mechanism to advance a material web in a longitudinal path, an inflation mechanism for inserting a fluid into the material web to create one or more inflated pillows, a fluid inlet for providing the fluid to the inflation mechanism, and a cutting mechanism configured to cut the material web in the longitudinal path.

Abstract: The invention describes a device (1) for production of bags that preferably consist mostly of paper. This devices includes a perforation device (6) for cross perforation of a material web (3), a tube formation device (9) for formation of a tube (10) from the material web (3), separation device to separate individual tube sections (12), as well as a device to form a bottom on one of the ends of the tube section (12). At least and an additional tear-off device (11) is provided with which individual material sections can be torn off from the tube sections (12) or bags.

Abstract: The invention relates to a device for forming sleeve-like foil envelopes from a flat strip of foil material (12), at least comprising supply means (10) for supplying the flat strip of foil material; cutting means (20) for cutting the strip of foil material through over the entire width thereof so as to obtain a foil envelope strip of a specific length having a first and a second free edge (120a, 120b); at least one enveloping unit, around which the foil envelope strip is to be wrapped; joining means disposed near said enveloping unit for joining said first and said second free edge together, using heat, so as to obtain a sleeve-like foil envelope; as well as discharge means for discharging the sleeve-like foil envelope thus formed from the enveloping unit.

Abstract: A bag and a method for making a bag, wherein the bag has a first panel, a second panel and side gussets, wherein openings extend through the first panel and through respective first sections of side gussets adjacent to the first panel, a sealing flap portion has adhesive material thereon, further adhesive material on the first panel, portions of the further adhesive material passing through the openings and onto respective second sections of the side gussets adjacent to the second panel, the bag is foldable to form a folded first panel, and the further adhesive material being folded with the folded first panel to provide an adhesive-to-adhesive seal, wherein a portion of the seal extends into the openings to adhere to the portions of the further adhesive material on the respective second sections of the side gussets.

Abstract: A collapsible liquid container and a method for making foldable liquid containers, the collapsible liquid container includes: a first sheet, comprising: a cover wedge portion that forms a collapsible cover of the collapsible liquid container; a bottom wedge portion that forms a collapsible bottom of the collapsible liquid container; and a sheet body that forms a first side wall of the collapsible liquid container; wherein the cover wedge portion and the bottom wedge portion are integral extensions of the sheet body; and a second sheet that forms a second side wall of the collapsible liquid container.

Abstract: An integral tab 2-D or 3-D tab for a folder, and a method of making same is disclosed. The integral 2-D (flat) tab 300 is provided near the apex of the folder by cutting free/lose a portion of the existing flap material 14 of the hanging folder itself without the need for additional tabs or material being affixed. The cut creates the tab without additional material required. The 3-D tab 300 version is created adding a triangular portion 301 which is folded onto itself so that one edge surface is at an angle relative to the panels of the file folder allowing it to be read from the side and top. A perforated version allows for user selectable tab and a plurality of placements across the common edge allows the user to select the tab position.

Abstract: Provided is a bag making machine for making a bag with an angled bottom by a system different from the conventional system. Body materials of an upper layer and a lower layer are overlapped with each other and fed in the length direction. Furthermore, a bottom gusset material is fed to the body material of one layer and laid on the outer surface thereof, and one side edge of the bottom gusset material is arranged along one side edge of the body material. After the overlap of body material of the upper and lower layers and the feed of bottom gusset material, the bottom gusset material and the body material of the other layer are bonded at the one side edges thereof and fixed temporarily.

Abstract: A process for manufacturing bags and the resulting bag are disclosed. The bags may be continuously and detachably connected, and continuously and detachably connected bags may be wound onto a roll. In addition, a dispenser is disclosed for storing and dispensing bags. Also disclosed is an apparatus for use in dispensing plastic bags. A dispensing system is disclosed for continuously and detachably connected series of bags and in which the removal of a bag results in the subsequent bag in the series being at least partially opened.

Abstract: Machine for manufacturing mesh bags from a continuous roll of tubular mesh, and for filling and closing said mesh bags, which comprise an expansion device which is perimetric to the tubular mesh, the core expander of which is equipped with a vertical aperture which, as if it were a slot, traverses said core expander and connects the two frontal faces thereof and extends from its base to an intermediate point, for which the core expander adopts an inverted “U” shape, the machine also being fitted with preventive welding means, adapted for partially welding the two frontal faces of the tubular mesh and, as the case may be, the adjoining laminates of thermally weldable material through the aperture of the core expander; a traction device which drags a section of the tubular mesh provided with a bottom; conveyor means; and second and third filling and closing stations, respectively, both being arranged linearly.