Abstract: A package for dairy products, in particular solid or semi-solid dairy products, including a bag provided with at least one pair of lateral walls reciprocally joined by means of first welding lines and at least one bottom wall, so as to define a housing compartment. A dairy product is housed in the compartment defined inside the bag. The bag includes second welding lines made in correspondence with top parts of the bag and positioned on opposite sides of the bottom wall. The second welding lines are disposed diagonally with respect to the first welding lines and with respect to the bottom wall and configured and oriented so as to progressively narrow the housing compartment toward the bottom wall of the bag. The dairy product includes at least a central support zone on the bottom wall and the bag includes at least lateral support zones defined by the opposite top parts.

Abstract: A storage bag has a first closure profile attached to a first side surface, with the first closure profile forming a lip between an interlocking member and an edge of the first closure profile. The bag also includes a second closure profile attached to the second side surface, with the second closure profile forming a lip between an interlocking member and an edge of the second closure profile. The lips of the first and second closure profiles are visually distinct colors or different shades of a color in order to aid the user in locating the lips.

Abstract: The present application relates to a device for preparing an electrode assembly and a preparation method of the electrode assembly. Wherein the device for preparing the electrode assembly includes: a winding assembly; a plurality of first electrode plate unwinding apparatuses, configured to provide a plurality of first electrode plates for the winding assembly; and at least one second electrode plate unwinding apparatus, configured to provide at least one second electrode plate for the winding assembly, wherein a polarity of the first electrode plate is opposite to a polarity of the second electrode plate; and wherein the winding assembly is configured to wind the plurality of first electrode plates and the at least one second electrode plate, to form an electrode assembly. The present application is used for improving winding efficiency of the electrode assembly.

Abstract: A cutting apparatus for cutting a web within a frame includes a die cutter assembly including a cutting blade projecting from a cylindrical surface and a counter anvil including first and second ends journaled into the frame. The counter anvil is positioned below the die cutter assembly for receiving the web fed therebetween across a width of the frame. The cutting apparatus includes first and second outboard bearing assemblies positioned on the die cutter near the first and second opposing ends, respectively, and one or more inboard bearing assemblies positioned about the die cutter assembly and spaced inwardly from the outboard bearing assemblies. Each outboard bearing assembly is configured to control a spacing between the die cutter assembly and the counter anvil along the width of the frame. The cutting apparatus also includes one or more actuators positioned atop the frame in connection with the one or more inboard bearing.

Abstract: A head seal device of a bag making apparatus includes a pair of seal units configured to face each other in a facing direction. Each of the seal units includes a heat seal member and a heater. The heat seal device includes an adjustment unit configured to move the first seal unit in a width direction of continuous sheet panels, and to move the second seal unit in the width direction of the sheet panels in accordance with movement of the first seal unit in the width direction.

Abstract: According to an apparatus for successively making the plastic bags, wherein the wastes 14 are formed in at least two areas adjacent to each other widthwise of the plastic film 1, and the apparatus can determine whether all of wastes 14 of each of the areas are discharged. The apparatus comprises at least one partition plate 20 in a suction path 16. The suction path 16 is divided into at least two widthwise of the plastic film 1. The wastes 14 is guided to each of the divided paths 21A, 21B, 21C, 21D and is discharged. The wastes 14 is detected by an optical sensor when the wastes 14 is discharged to each of the divided paths.

Abstract: A system for manufacturing sacks or bags includes at least two sack or bag producing machines which control components are assigned to, and which are connected with each other by at least one transport device and/or one storage device. The system includes a control unit configured such that manufacturing speeds of the two sack or bag producing machines can be transmitted to and/or processed by the control unit. The control unit is configured such that it proposes and/or sets the manufacturing speed of the two sack or bag producing machines based on system operating parameters.

Abstract: A stand-up plastic food storage bag having two bottom gusset walls and a folding seam defining abutment of the front bottom gusset wall to the rear bottom gusset wall. There are gusset wall reinforced regions on an external surface of the bottom gusset walls which do not cover the folding seam, so they do not significantly interfere with folding the seam when collapsing the bag into its storage condition.

Abstract: Embodiments of the present disclosure describe a method and apparatus for a resealable package having an internal zipper seal. In one embodiment, the apparatus is a vertical form, fill, and seal machine that includes a former, a vertical sealer, and a zipper separation blade located between the former and the vertical sealer. The zipper separation blade further comprises a connector and a blade body that defines a zipper gap between an exterior surface of the former and the blade body.

Abstract: The embossing device for fine embossing of packaging material has a set of embossing rolls with female embossing and male embossing rolls, in each case the structural elements (ML1) of the female embossing roll (M1) and the structural elements (PL1) of the male embossing rolls (P1) being assigned to each other, and the structural elements of one of the rolls being produced independently of the structural elements of the other rolls. At least one structural element (ML1; PL1) of at least one roll (M1, P1) is provided on its bottom surface (B1) and/or surface (S1) and/or side surfaces and/or in its immediate surroundings with light-scattering elements (DM1, D1), the height (H) of which is 10 ?m to 150 ?m. As a result of the use of light-scattering elements with small dimensions, the contrast of the structural elements can be increased substantially, by which means the overall aesthetic image is improved considerably.

Abstract: Embodiments of a flexible pouch (1) comprise a pouch body (10), a collapsible perforated folded panel (50), an opening seal (60) disposed between the collapsible perforated folded panel (50) and the second ends (18, 19) of a front wall (12) and a rear wall (14), wherein the opening seal (60) adheres the second end (18) of the front wall (12) to the second end (19) of the rear wall (14) which thereby conceals the collapsible perforated folded panel (50). The release or removal of the opening seal (60) is operable to expose the collapsible perforated folded panel (50) and application of a pull force is operable to outwardly expand the collapsible perforated folded panel (50) to allow draining of liquid or dispensing of dry powder or flakes from the pouch chamber (52).

Abstract: A machine for automatically inflating air cushions. The cushions have two plastic walls (21; 22) joined together around their periphery to define a closed space. The machine comprises a source of gas under pressure, and two jaws (1; 2) arranged such that they can move on a supporting structure. Each one of the jaws consists of a body (1; 3) each having a plane face (4; 10) of substantially the same shape and surface area, it being possible for the faces to mate against one another in order to clamp between them the walls (21; 22) of a cushion. Each jaw comprises an aspiration channel (6; 7) opening onto its planer face. A first jaw on the inside of its body has a hollow needle (5) able to move relative to the body and capable in a certain position of having its pointed tip outside of the surface of the plane face.

Abstract: Aspects of the disclosure relate to techniques for manufacturing a balloon envelope including a duct for high altitude balloons. In one example, a first sheet of material may be provided. A premade duct may be arranged at least partially on the first sheet of material. The duct may include a first substance on an internal surface. A second sheet of material may be arranged over at least a portion of the duct. A heat sealing device may be applied to the second sheet of material to heat seal the first sheet of material to the second sheet of material. The heat sealing device may be applied over at least a portion of the duct in order to seal external surfaces of the duct to each of the first and second sheets of material and form a balloon gore. The first substance may keep the duct from being sealed to itself.

Abstract: A stacking apparatus having a cylindrical conveyance drum holding and rotating to covey a separator and an electrode conveyance unit conveying a positive electrode in a tangential direction of the conveyance drum so that the positive electrode overlaps the separator. To the outer circumferential surface of the conveyance drum, there are defined a suction area for drawing the separator that is non-rotatably positioned on an upstream side of a rotation direction of the conveyance drum with respect to a location to which the positive electrode in conveyed and a non-suction area for removing the separator that is non-rotatably positioned on a downstream side of the rotation direction of the same. The separator in the suction area is conveyed to the non-suction area, is removed from the outer circumferential surface, and is transferred onto the positive electrode, thereby gradually stacking the separator on the positive electrode.

Abstract: A clamping system for positioning a first component and a second component relatively to each other includes a clamping device, a separating foil and an electrical contacting device. The clamping device is adapted to fix the first and second components in a desired joining position under creation of a gap therebetween with a characteristic measure of tolerance relative to each other in a first position of the clamping device and to release this fixation in a second position of the clamping device. The separating foil includes an anti-stick layer and a heating layer connected with electrically conducting contact zones for heating a compensation compound arranged in the gap. The electrical contacting device is mechanically couplable with the clamping device or a supporting device holding the clamping device and is adapted for creating an electrical contact with the contact zones at least in the first position of the clamping device.

Abstract: A method of forming a flexible container can include folding a web or sheet to define one or more gussets in one or more regions of the flexible container. The gusset can be a continuous gusset or can be an interrupted gusset, having a seal disposed in the gusset.

Abstract: A method of manufacturing a bottom gusseted pouch is provided. The method comprises unwinding a pouch webbing in a first flow direction, the pouch webbing defining front and back panels; inserting a gusset webbing between the panels in a second flow direction; attaching the gusset webbing to the panels to form a bottom gusseted end; optionally inserting a closure mechanism between the panels in a third flow direction; attaching the closure mechanism to the panels to form the resealable top end of the pouch; sealing the side edges of the panels to complete the pouch; and optionally cutting the completed pouch from the pouch webbing. At least one of the pouch webbing and the gusset webbing is formed of a supported film.

Abstract: A method and apparatus for making a structurally resilient package with a desired shape on a vertical form, fill, and seal machine. The method comprises sealing a film to form a back seal; forming a first end seal to form a partially formed first package; flattening a first side of the partially formed first package to form a flat first side; filling the partially formed first package with product; forming a second end seal on the partially formed first package to form a first package from the partially formed first package; flattening the second side of the first package to form a flat second side, wherein the flattening the first side and the flattening the second side occur on a first machine.

Abstract: A pouch cleaning assembly that includes a treatment chamber and a guide assembly. The treatment chamber includes an elongated central channel extending therethrough. The guide assembly having a first side guide bar and a second side guide bar. The guide bars defining a channel therebetween that is structurally configured to facilitate the retention of spouts of a plurality of pouches in slidable engagement along the first and second guide bar. Any abutment of adjacent portions of the plurality of pouches within the treatment chamber define relative points of contact. The channel is positioned within the elongated central channel, wherein the channel is undulating in at least one of a vertical and a horizontal direction along the length thereof sufficient so as to substantially expose the relative points of contact between adjacent ones of the plurality of spouts so as to expose the same to the cleaning preparation.

Abstract: Pressure pad for a heat-sealing device in a packaging machine, the heat-sealing device having a heat-sealing jaw and a counter-jaw adapted to seal together two surfaces of a packaging material when the jaws are pressed together. The pressure pad comprises a first portion, adapted to be mounted on the counter-jaw of the heat-sealing device, and a second portion, in use arranged towards the heat-sealing jaw of the heat-sealing device. A cross-section of said second portion, along the extension of the pressure pad, has a substantially constant arc-shape of the outer contact surface in use facing the heat-sealing jaw. The pressure pad is made up of a resilient material, and the cross-section of said arc-shaped outer contact surface has a radius of curvature of 15 mm±5 mm. The invention further relates to a heat-sealing device having such a pressure pad.

Abstract: An inkjet printing apparatus and a method of making gratings are provided. The inkjet printing apparatus comprises a base; a platform provided on the base configured to carry a substrate to be processed to linearly move in a first direction on the surface of the base; and a printhead assembly provided above the platform, wherein the printhead assembly includes a printhead support and a plurality of printheads provided on a side of the printhead support facing the platform, each of the plurality of printheads is provided with a nozzle, and the printhead assembly can move linearly in the first direction. The present invention is adaptable to using inkjet printing technology to make gratings.

Abstract: In a method for manufacturing a metal-made three-dimensional substrate, a metal foil is passed between a pair of rollers 21 and 22. Each surface S of a pair of the rollers 21 and 22 is provided with protrusion portions 23 arranged in a grid pattern, and the protrusion portions 23 are arranged so that protrusions 23 of the one roller 22 are oriented toward the center 27 of a virtual quadrangle having four adjacent protrusion portions 23a to 23d of the other roller 21 as the apices.

Abstract: A method of manufacturing a foldable bag for use in a bag-in-box assembly is described. The foldable bag being manufactured according to this method has a folded condition in which it includes at least an inwardly creased bag portion in a longitudinal direction thereof. Furthermore, the bag includes a bottom edge and a top edge opposite to each other in a longitudinal direction of the bag. The inwardly creased bag portion has a first closed end and a second closed end opposite to each other in the longitudinal direction of it. The first and/or second closed end of the inwardly creased bag portion is a free end. The bag according to the invention has an improved unfolding process during filling it, and has such a configuration that it does not cause material stress in certain welded seams such as in known bags.

Abstract: A method of manufacturing a roll of bottom gusseted pouches serially connected in a top-to-bottom end orientation is provided. The method comprises unwinding a pouch webbing in a first flow direction, the pouch webbing defining front and back panels of a respective pouch; inserting a gusset webbing between the panels in a second flow direction; attaching the gusset webbing to the panels to form the bottom gusseted end of the pouch; inserting a closure mechanism between the panels in a third flow direction; attaching the closure mechanism to the panels to form the resealable top end of the pouch; sealing the side edges of the panels to complete the pouch; winding the completed pouch onto the roll; and repeating these steps to form the other bottom gusseted pouches in the roll. At least one of the pouch webbing and the gusset webbing is formed of a supported film.

Abstract: A method for sealing and cutting of a flexible material for forming a flexible container comprising a product volume and at least one structural support volume can include feeding at least two flexible material into a sealing apparatus comprising a sealing surface and an opposed anvil surface; contacting a seam region of the at least two flexible material with the sealing surface to form a seal in the seam region and cut the seal to form a seam in a single unit operation. The seal defines one or both of at least a portion of a boundary of the product volume and at least a portion of a boundary of the at least one structural support volume.

Abstract: A bag machine, and method of making bags, has a sealing station a perforating station, and a downstream seal and perforation inspection station, or a perforation detection station and/or a seal inspection station is disclosed. Control of the perforating and sealing stations is preferably closed loop. The seal and perforation inspection station preferably includes a perforation detector that triggers a vision system and/or a camera, and the film is illuminated. Preferably, the inspection station is enclosed in an opaque housing, or the ambient light is otherwise blocked. The seal and perforation inspection station preferably provides an image output a display visible to a user. The vision system preferably includes a perforation location module and/or determines the distance between the seal and perforation. A downstream processing station can be provided, and can have a detected fault input, connected to a fault detect output from the seal and perforation inspection station.

Abstract: A flexible packaging bag is closed at one end by means of a header having a removable outer header portion and an inner header portion (16A) both of which are sealed. The seal in the inner header portion is peelable. An elliptical aperture is defined in the outer header portion. The aperture is dimensioned to enable the insertion of one or more fingers and is offset proximal to a first side edge of the outer header portion. The aperture is used to suspend the bag from a display hook at an angle and can be grasped as an aid to tearing when removing the outer header portion.

Abstract: The invention relates to a flat-lying side-gusset bag made of a plastic fabric composite (2) and to a method for the production thereof. The side-gusset bag has opposing front walls (3a, 3b), side gussets (4a, 4b) introduced in between said front walls (3a, 3b), and folding edges (5) between the front walls (3a, 3b) and the side gussets (4a, 4b). Peripheral sections of the plastic fabric composite (2) are connected together in an overlapping region (10) at a longitudinal seam, wherein the plastic fabric composite (2) has a plastic fabric (7) and at least one closed plastic layer. The side gussets (5) extend, in the case of the flat-lying side-gusset bag, in each case over at most ? of the width of the front walls. According to the invention, the overlapping region (10) is arranged off-centre on one of the front walls (3a, 3b) at least partially over one of the side gussets (4a, 4b) or at one of the side gussets (4a, 4b).

Abstract: An apparatus is improved to successively make plastic bags each of which includes an end surface provided with a spout, by employing the general feeding way of panel material, to be simple in structure, low in cost, high in speed and to make it possible to successively make the plastic bags two by two. A first folded portion is formed in a first web of panel material 1. An aperture is formed in a second web of panel material 2. A spout is inserted into the aperture, the spout and the second web of panel material 2 being heat sealed with each other. The second web of panel material 2 is guided by a guide device 18 to be folded after being heat sealed so that a second folded portion should be formed in the second web of panel material. The spout is turned over by the second folded portion. The second folded portion and the first folded portion are heat sealed with each other while the second folded portion and the second web of panel material 2 are heat sealed with each other about the spout.

Abstract: A vacuum sealing machine includes a base assembly having an upper base portion removably secured to a lower base portion and displacing relative to the lower base portion from a closed position to an open position. Two or more heating strips are disposed on the lower base portion, and each of the heating strips is adapted to seal a portion of an open end of a sealable bag disposed between the lower and upper base portions. At least one securement feature is disposed on the upper base portion and is adapted to apply pressure to a portion of the open end of the inserted sealable bag when the sealable bag is sealed by at least one of the heating strips. In addition, A control unit including at least one microprocessor and a memory unit is in communication with each of the two or more heating strips.

Abstract: Bags having reinforcement tabs are disclosed along with methods of their manufacture.

Abstract: A sealed package is disclosed that includes a breachable bubble for opening the package in combination with at least one reclosable device. The reclosable device may comprise a pair of opposing interlocking members. The breachable bubble allows for the package to be easily opened while the reclosable device allows for the package to be closed once opened. The breachable bubble and the reclosable device can be preformed on opposing strips that are then incorporated into the package as the package is being formed.

Abstract: A device for configuring foil for use in cooking food comprising: a base portion; a first plurality of rotatable elements operatively associated with the base portion; a support mounted on the base portion; and a second plurality of rotatable elements operatively associated with the support; the support operating to pivot relative to the base portion so as to allow entry of foil between the first and second plurality of rotatable elements in a first position and engagement of the first and second plurality of rotatable elements in a second position; whereby in the second position the first and second plurality of rotatable elements impart a configuration to the foil.

Abstract: A trifold side seamed film produce bag includes a front wall and a back wall, first and second side edges sealed together and a seamless bag bottom. The bag is joined at the side edges to additional bags by a perforation. The bag is corona treated on at least one wall and promotional material is printed on the treated surface. The bags are folded to one third of their height to fit compact bag roll dispensers. The bags are folded in a Z-fold or C-fold configuration. The method includes manufacturing the bags and winding them onto cores or forming the bags into coreless rolls. An apparatus for forming the side seamed bags includes an extruder, a tubing flattener, a perforator, a sealer, a corona treater, a printer and a slitter. The treated, printed bags may be stored on rolls for later slitting into two bag streams and folding into thirds.

Abstract: Disclosed is a apparatus for manufacturing pole-piece pockets, comprising a framework, an pole-piece supplying assembly, an pole-piece transporting and regulating assembly, a vertically thermal-welding assembly, a transversely thermal-welding assembly, a film clamping and drawing assembly, and a film cutting assembly for cutting the films. The vertically thermal-welding assembly comprises a press welding cutter having two blades for simultaneously welding the two lateral edges of the pole-piece pocket. The transversely thermal-welding assembly comprises a first thermal welding cutter for welding the base of the pole-piece pocket and a second thermal welding cutter for welding the opening of the pole-piece pocket. The press welding cutter has two blades so that the two lateral edges of a pole-piece pocket can be welded in just one welding operation. Thus, the parallelity and welding consistency of the welding joints can be ensured.

Abstract: A reel-to-reel aerosol collection and storage system for capturing and storing a plurality of separate samples of aerosol particles using electrostatic precipitation technology for collecting such particles onto a tape mechanism for analysis at a future time. The particles are collected onto a region of the collection tape for a defined period of time and then that portion of the collection tape is advanced out of the collection zone and manipulated so as to form sealed pouches or pockets which can be either severed from the collection tape for individual storage in a temperature controlled storage container, or which can be stored on a take-up reel in a temperature controlled environment. The collected aerosol particles are stored with a buffer fluid to preserve and maintain the viability of the collected particles for future extraction and analysis. Several embodiments for forming sealed pouches or pockets and methods of storing the collected particles are disclosed.

Abstract: A method of making a bag, wherein a first layer of heat activated adhesive material is on a portion of the bag to form an adhesive-to-adhesive seal by contact with a second layer of heat activated adhesive material on a portion of the bag second panel, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric bag material, and wherein sealing the bag end after the bag has been filled with contents by heat activating the first layer of adhesive material and the second layer of adhesive material at a temperature below the softening point temperature of the polymeric bag material.

Abstract: A trifold side seamed plastic produce bag includes a front wall and a taller back wall, first and second side edges sealed together and a seamless bag bottom. The taller back wall provides means for finding the bag opening. The bag is joined at the side edges to additional bags by a perforation. The bag is corona treated on at least one wall and promotional material is printed on the treated surface. The bags are folded to one third of their height to fit compact bag roll dispensers. The bags are folded in a Z-fold or C-fold configuration. The method and apparatus for producing the bags includes a slitter that removes a strip of plastic from only the top layer of the bag stream to form an extended flap on each bag. The method includes manufacturing the bags and winding them onto cores or forming the bags into coreless rolls.

Abstract: In an embodiment of the invention, a cut/weld apparatus is configured to provide optimal and limited tension of bag material even during high-speed operation. The limited tension may contribute to stronger plastic welds. Another embodiment of the invention, which may be used in combination with the first embodiment, provides a roll discharge stage in a bag manufacturing apparatus that includes a retracting spindle and may include a rotating tray. The improved discharge stage requires less floor space than conventional side-discharge manufacturing equipment.

Abstract: A self-standing bag with foldable flanges includes a main body, available with two corresponding side walls and a top connected at the top of two side walls. A nozzle is set centrally or laterally onto the top wall, and covered by a cover in openable state. The foldable flanges are arranged at the top of two side walls of the main bag body, and openings are formed between two corresponding sides of the foldable flanges. The self-standing bag can be positioned more reliably for an improved advertising effect.

Abstract: A flexible package is defined by an inner package layer and a surrounding outer package layer. The inner and outer layers define a tubular body and opposing end portions. A first region of weakness is provided within the outer package layer and is spaced from one end of the package. The region of weakness within the outer packaging layer forms an opening mechanism for the outer layer to expose the inner packaging layer. A second region of weakness is provided within the inner package layer and is spaced from the end of the inner package. The second region of weakness positioned offset from the first region of weakness, to permit the two opening mechanism to be separately activated.

Abstract: This invention provides an apparatus and a method for making package which has less rejection rate during manufacturing. The method in the present invention also produces packages with good dimensional accuracy. The apparatus in the present invention is provided for making three side gusset package with improved method of feeding side gusset tube and feeding bottom gusset along with web registration of bottom and side gusset to have printing perfectly located and aligned on package surfaces such that the images or graphics can be printed partially on front side & back side, continuing over side and bottom gusset surfaces.

Abstract: A method and apparatus for making packages with internal headers from an elongated web of preformed interconnected bags. The packages with internal headers are made by inserting a product or a header into a bag. The bag is sealed to form a first compartment that contains the inserted bag or header. The other of the product and the header is inserted into the bag. The bag is sealed to form a second compartment that contains other of the product or header. The package is separated from the elongated web of interconnected bags.

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 single sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into the heater, and be disposed on a cap or on the seal bar. The weakening zone may create a line of weakness that is uniform or varies in intensity. The sealing zone may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.

Abstract: A trifold side seamed plastic produce bag includes a front wall and a taller back wall, first and second side edges sealed together and a seamless bag bottom. The taller back wall provides means for finding the bag opening. The bag is joined at the side edges to additional bags by a perforation. The bag is corona treated on at least one wall and promotional material is printed on the treated surface. The bags are folded to one third of their height to fit compact bag roll dispensers. The bags are folded in a Z-fold or C-fold configuration. The method and apparatus for producing the bags includes a slitter that removes a strip of plastic from only the top layer of the bag stream to form an extended flap on each bag. The method includes manufacturing the bags and winding them onto cores or forming the bags into coreless rolls.

Abstract: A machine for making bags from sheet material of indeterminate length, especially thermoplastic material, has a pair of spaced folders of special construction for folding the material lengthwise. The entry end of the machine can be adjusted as to height. An applicator for adhesive tape can be positioned between the folders. A special construction thermowelds the folded layers together along transverse lines and severs or perforates them along those lines.

Abstract: In an embodiment of the invention, a cut/weld apparatus is configured to provide optimal and limited tension of bag material even during high-speed operation. The limited tension may contribute to stronger plastic welds. Another embodiment of the invention, which may be used in combination with the first embodiment, provides a roll discharge stage in a bag manufacturing apparatus that includes a retracting spindle and may include a rotating tray. The improved discharge stage requires less floor space than conventional side-discharge manufacturing equipment.

Abstract: A process for manufacturing a bag from a polymer and/or metal film material provides a bag that has four outer walls connected by four seams and that has a sealed lower end. The bag-forming material is fed in the form of a film web that is wound up on a roll to an unwinding station of a bottom forming device that separates the unwound film web into film segments, connects the film segments, and seals at least one end of the connected segments to form the bag.

Abstract: A plastic bag including a pair of side gussets 1 is arranged to be free of leakage from one end portion of each of the side gussets. Each of the side gussets has opposite end portions one of which is folded obliquely along a folding line as it is folded into halves so that a triangular flap 13 can be formed by the end portion to be shaped into a triangle having a base formed by the folding line. The triangle has an apex formed by an intersection between one of the opposite end edges and the folded inner edge of each of the side gussets. The panels 2, the side gussets and the triangular flaps are heat sealed respectively along the opposite side edges 3 of panels.

Abstract: A machine for the production of bags made of alveolar or foamed plastic material starting from at least one continuous web with superimposed flaps fed continuously to a heat-sealing assembly. The heat-sealing assembly is actuated according to a pendular motion in synchronism with continuous advance of the web, and is pre-arranged for carrying out, at the same time as heat-sealing, half-cuts on the web, which is then folded in concertina fashion by means of a lapper assembly at output from the machine.