Abstract: A cyclic packaging process, such as VFFS or HFFS, packages a product with a viscosity of ?100,000 centipoise without leaving substantial air pockets in the package, by utilizing a means (38) for restricting upstream flow of viscous product in the strand of tubing (24). The result is that packages of uniform weight of the viscous product can be made without substantial air pockets therein, and without having to use metal clips. An apparatus (10) for carrying out the process is disclosed.

Abstract: A male belt-shaped base having a male member with a short width, and a separation strip are heat-sealed to a film. A female belt-shaped base having a female member with a long width is heat-sealed at a predetermined position so that the male portion and the female portion are at engageable positions. The film is layered and suitably sealed to form a zipper-tape bag. The film and the separation strip are cut to form a cut portion at a non-bonded region in which the film of the zipper-tape bag is not bonded, thereby forming an unsealing tab. The unsealing tab can be easily formed by simply cutting the film.

Abstract: A first sheet panel is folded along a first fold line, and thereby a first folded part is formed in the first sheet panel. Subsequently, the first folded part is folded back along a second fold line, and thereby a folded-back part is formed in the first sheet panel. A corner cut device cuts a second sheet panel and the folded-back part to form corner cut parts. At this time, the corner cut device prevents the first folded part and a base part of the first sheet panel from being cut.

Abstract: A label folding apparatus and methods for its use are disclosed. Such a label folding apparatus comprises a label folding assembly and a label holding assembly, and may be used to fold a foldable label placed onto the label holding assembly.

Abstract: A packaging unit for producing sealed packages from a tube of a sheet packaging material fed along a feed path having a first axis; unit comprises: jaws movable cyclically along path between a seal position in which they grip and seal tube to form sealing bands of packages, and a rest position in which they are detached from tube; and folding flaps fitted movably to jaws; folding flaps are movable between: an open position in which they are detached from tube, and a fully closed position in which they cooperate with tube for forming folded flaps in package; the jaws are also cyclically movable in an intermediate position, which is arranged between rest position and seal position; folding flaps are movable relative to the jaws into a partly closed position, which is arranged between open position and fully closed position, when the jaws are set in intermediate position.

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 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 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: 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 coupled portion of mutual laminate films sufficiently contributes to the formation of a packaging bag in that the coupled portion itself has excellent air tightness and liquid tightness. The tensile strength required for the laminate film is given to the coupled portion, whereby a temporary stop of a packaging apparatus is useless when a connecting portion of the laminate film is passed through the apparatus, thereby enhancing the operation efficiency and improving the yield of the material. Oriented base film layers are joined in a mitre form at the coupled portion between a rear end portion and a front end portion of laminate films comprising oriented base film layers and sealant layers.

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 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 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 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: A first hanger and a second hanger are disposed on a working platform according to a hanging manufacturing apparatus for manufacturing an air enclosure, in which the first hanger is constituted by a first hanging frame and a plurality of first supporting arms and used for hanging a first hot sealing mold, the first hanging frame drives the first hot sealing mold on the plurality of first supporting arms to hot-seal an air cylinder film sheet while being moved to form a plurality of nodes on the air cylinder film sheet, and the second hanger is constituted by a second hanging frame and a plurality of second supporting arms and used for hanging a second hot sealing mold, the second hanging frame drives the second hot sealing mold on the plurality of second supporting arms to hot-seal the air cylinder film sheet while being moved to form a plurality of air cylinders on the air cylinder film sheet.

Abstract: A resilient backing member for use in cooperation with an impulse heating element comprises a resilient body having a longitudinal shoulder surface and a longitudinal intermittent raised edge protruding from the shoulder surface. The resilient backing member is for use in cooperation with an impulse heating element for sealing layers of thermoplastic film together and for either forming a sealed portion on the film, a rupturable portion on the film or severing the film. Accordingly, the resilient backing member can be used on a pouch filling machine to produce a string of sealed pouches connected by a rupturable portion or a sealed portion, and filled with flowable material without the use of a separate cutting blade.

Abstract: A cutter-sealer (10) and a method (300) for cutting and sealing layers of film (70) together. The cutter-sealer (10) provides a heated blade (20), part of which moves through sheets of tautly held layers of film (70) into a slot defined by the seal pad (40). The blade's (20) motion is arrested by a set of blade shoulders (26) that press against the layers of film (70) for a period of time, thereby sealing the layers of film (70) together. The method (300) includes cutting layers of film (70) without liquefaction and sealing the newly cut edges of the layers of film (70) together, also without liquefaction of the layers of film (70).

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 of panels.

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: The invention concerns packaging of products on sale outlets. It concerns a feed roll for heat sealing package tubing reel (11), comprising a body (3) provided with, in particular: means (4) supporting at least one reel (2) of package tubing (11); an outlet head (5) for the tubing including: at least an outlet window (10) for the tubing, means for cutting (15) the tubing, means for welding (16) the tubing, means (6) guiding the tubing between the reel (2) and the outlet head (5). The invention is useful for supplying and welding a heat sealing tubing in a fish market.

Abstract: A generally planar laminate used in forming a personalized presentation folder is provided. The laminate includes one or more patterns of adhesive and one or more die cuts or lines of weakness so as to be able to create one or more pockets and other variable configurations for an individual folder. The laminate of the present invention can be processed through a non-impact printer and may be selectively configured or tailored to meet the needs of the individual user or recipient.

Abstract: A method of forming a plurality of floral sleeves having a uniform design or pattern and printed about a lower end thereof without requiring the waste of significant portions of sheet material is provided. The method includes the step of sealing and severing a pair of web portions along lines defined by coextensive first side edges and coextensive second side edges of decorative portions. In another aspect, the method includes the step of sealing and severing a pair of overlapping web portions provided with a plurality of decorative portions along a plurality of lines which traverse the decorative portions and each of the corresponding undecorative portions to form a plurality of sleeves wherein each sleeve has an upper portion and a lower portion with the lower portion having a decorative portion extending about the exterior circumference of the lower portion of the sleeve while the upper portion is free of any printing contained in the lower portion of an adjacently formed sleeve.

Abstract: A welding device has two mutually engaging welding wheels, together with a separating device having a blade with a cutting edge. Two film webs can be welded together in conventional manner using the welding device. The blade is able to separate a projecting length from the welded film, the blade being heated. Heating takes place by a heat bridge, which connects the blade to a heater of the welding device. This economizes a separate heater for the blade.

Abstract: A method of forming a plurality of floral sleeves having a uniform design or pattern and printed about a lower end thereof without requiring the waste of significant portions of sheet material is provided. The method includes the step of sealing and severing a pair of web portions along lines defined by coextensive first side edges and coextensive second side edges of printed portions. In another aspect, the method includes the step of sealing and severing a pair of overlapping web portions provided with a plurality of printed portions along a plurality of lines which traverse the printed portions and each of the corresponding unprinted portions to form a plurality of sleeves wherein each sleeve has an upper portion and a lower portion with the lower portion having a printed portion extending about the exterior circumference of the lower portion of the sleeve while the upper portion is free of any printing contained in the lower portion of an adjacently formed sleeve.

Abstract: A method of forming a plurality of floral sleeves having a uniform design or pattern and printed circumferentially about a lower end thereof without requiring the waste of significant portions of sheet material is provided. The method includes the step of sealing and severing a pair of web portions along lines defined by coextensive first side edges and coextensive second side edges of printed portions. In another aspect, the method includes the step of sealing and severing a pair of overlapping web portions provided with a plurality of printed portions along a plurality of lines which traverse the printed portions and each of the corresponding unprinted portions to form a plurality of sleeves wherein each sleeve has an upper portion and a lower portion with the lower portion having a printed portion extending continuously about the exterior circumference of the lower portion of the sleeve while the upper portion is free of any printing contained in the lower portion of an adjacently formed sleeve.

Abstract: A heat sealing/severing device for heat sealing thermoplastic films together. The device includes front and rear opposing jaws that are moveable between an open position and a closed position. The open position defines a zone for inserting the thermoplastic films between the front and rear jaws. In the closed position, the front and rear jaws are proximate each other to compress the thermoplastic films together. The rear jaw includes a resilient portion facing the front jaw. The heating element of the device may have a cross-sectional thickness no less than 0.55 times the cross-sectional thickness of the resilient portion. A front jaw release sheet (e.g., an unreinforced fluoroplastic) may be positioned between the insertion zone and the heating element. The front jaw release sheet may engage the heating element when the front and rear jaws are in the closed position and disengage from the heating element when the front and rear jaws are in the open position.

Abstract: A method for simultaneously sealing and creating a thermal perforation between two thermoplastic layers that comprises providing two thermoplastic layers. A drum is provided that has at least one sealbar and perforation assembly. The two thermoplastic layers are contacted to the sealbar and perforation assembly. The thermoplastic layers are sealed with two generally opposing parallel seals and simultaneously create a thermal perforation in the thermoplastic layers generally parallel to the opposing seals. The thermal perforation is located between the two opposing seals.

Abstract: A seal cutter for a plastic bag includes a folding device, a conveyor device, a point cut-off device, a tension control device, and a coreless winding device. The folding device includes a rectangular guide plate, a triangular guide plate rested on the rectangular guide plate, and an oblique drive rod located above the triangular guide plate. The tension control device includes a fixed roller set, a movable roller set, and a chain set for moving the movable roller set to engage the fixed roller set. The coreless winding device includes a piston rod structure, and a clamping structure.

Abstract: Methods for making packages having improved openable and reclosable interlocking seals from a continuous web of composite packaging film, the seal having male and female portions of arrowhead shape in cross section, snap detents, and being formed transversely to the direction of film flow during package formation at line speed. The packaging film is provided at package length intervals with thermoformable strips secured thereto transversely to the running length of the film, and is fed to a modified standard vertical form, fill and seal packaging machine where the film is formed into a bag with the thermoformable strip inside in ends abutting folded facing relationship at the upper end of the bag, product deposited into the bag, the bag sealed, the reclosable interlocking seal formed, and the bag severed from the next bag being formed.

Abstract: A method of forming a plurality of floral sleeves having a uniform design or pattern and printed circumferentially about a lower end thereof without requiring the waste of significant portions of sheet material is provided. The method includes the step of sealing and severing a pair of web portions along lines defined by coextensive first side edges and coextensive second side edges of printed portions. In another aspect, the method includes the step of sealing and severing a pair of overlapping web portions provided with a plurality of printed portions along a plurality of lines which traverse the printed portions and each of the corresponding unprinted portions to form a plurality of sleeves wherein each sleeve has an upper portion and a lower portion with the lower portion having a printed portion extending continuously about the exterior circumference of the lower portion of the sleeve while the upper portion is free of any printing contained in the lower portion of an adjacently formed sleeve.

Abstract: A method of forming a gusseted plastic zipper bag. The zipper profiles are provided intermittently on a carrier web, the thickness of which is less than the bag film, the carrier web is attached to the bag film that has windows cut therein that are aligned transversely so that profile-free section of the carrier web covers the windows. During bag formation the sections of the bag film with windows covered by the carder web are folded to form gussets.

Abstract: A flat plastic bag is formed from a side gusseted tubular web. The bag is formed with an open end and a opposite spaced end seal. Hinge crease patterns are formed in each of the gusseted portions at the bottom end of the bag. The pattern includes a two ridge upper leg and a three ridge bottom leg which are formed by a cold sealing process. A bag making machine includes a web supply which is passed through a web feed supply section to form the gusseted web. The gusseted web is sent through a forming section. The segment is first formed with the patterns of two bags in immediately adjacent relationship and located to the opposite sides of a common line defining the end of the adjacent bags. The web is formed into two bag segments with the creases located at each of the segment ends. The web is passed through a unit creating the seal and simultaneously severing the upstream segment.

Abstract: The present invention relates to a sealing apparatus for sealing foil material, the apparatus comprising a foil conveying means and a sealing means including a sealing head which has at least one sealing position for performing the foil sealing operation, an intermediate position in which the sealing head has a predetermined distance from the sealing position, and an inoperative position in which the sealing head has a second predetermined distance from the sealing position that is greater than the first distance. Furthermore, the invention relates to a corresponding sealing method which can be carried out with the sealing apparatus, wherein the sealing head is removed from the foil material to a first distance during the further transporation of the foil material and is removed from the foil material to a second greater distance when the foil sealing operation is interrupted.

Abstract: A method of forming a plurality of floral sleeves having a uniform design or pattern and printed circumferentially about a lower end thereof without requiring the waste of significant portions of sheet material is provided. The method includes the step of sealing and severing a pair of web portions along lines defined by coextensive first side edges and coextensive second side edges of printed portions. In another aspect, the method includes the step of sealing and severing a pair of overlapping web portions provided with a plurality of printed portions along a plurality of lines which traverse the printed portions and each of the corresponding unprinted portions to form a plurality of sleeves wherein each sleeve has an upper portion and a lower portion with the lower portion having a printed portion extending continuously about the exterior circumference of the lower portion of the sleeve while the upper portion is free of any printing contained in the lower portion of an adjacently formed sleeve.

Abstract: An automated machine for making standardized disk jackets of consistent quality from non-woven cloth and polypropylene materials includes a machine table, and a raw material mount, a feed roller unit, a first cutter unit, an ultrasonic closure unit, a second cutter unit, a scrap drawing unit, and a conveyor unit disposed in sequence on the machine table. Non-woven cloth and polypropylene material rolls are mounted on the raw material mount. They are drawn, overlapped, cut, sealed using ultrasonic waves, cut into shape, and output as disk jackets for receiving compact disks.

Abstract: An apparatus, method, and pack of tabless, self-opening bags with flapless aperture cutouts pack. In the apparatus and method, cylindrical dies connected to a vacuum source are used to cut out plugs of holes, and the plugs are evacuated to a receptacle. Compression bars, or a relatively shallow bevel cut on the cylindrical die, are used to form area of frangible bonding in the central tab portion of the bag pack. The pack of tabless, self-opening bags with flapless aperture cutouts has no flap portions which might inadvertently detach from bag pack.

Abstract: An apparatus for making bags out of a thermoplastic web has a transport unit for feeding a leading end of the web in a transport direction to a cutting/welding station, tools at the station for transversely welding the web and cutting a bag from the leading end of the web, and a device downstream in the direction from the station for stacking and blocking bags cut from the web. A bag-pulling device between the station and the stacker/blocker has an endless drive strand having a pair of stretches extending vertically across a path of the bag between the station and the stacker/blocker and respective horizontally extending deflector rollers carried on the stretches, vertically displaceable therewith, each extending along a respective axis, and each having an outer surface engageable with the web and freely rotatable about the respective axis.

Abstract: A pouch and a method and apparatus for forming an easy open pouch in a form-fill-seal process is disclosed. The apparatus includes a first bar; a means for cutting, housed within the first bar, the means for cutting including a main cutting blade having two ends, and a tear notch blade attached to the main cutting blade between the ends of the main cutting blade, the tear notch blade disposed at an angle to the longitudinal axis of the main cutting blade; a means for holding the means for cutting within the first bar; a second bar; and means for advancing the means for cutting from the first bar, and through the pouch material, and subsequently retracting the means for cutting from the pouch material, thereby severing the pouch material and cutting a tear notch in an upper transverse seal of a first pouch, and a lower transverse seal of a second pouch.

Abstract: A sideweld bag making has a reciprocating seal bar and a roller. Drive rolls upstream of the seal bar moves a web in steps over the roller and seal bar seals and severs the web to form bags. A cooling plate between the drive rolls and sealing bar includes a web strip and control air stream tube directs a special stream to engage the raising seal bar to strip the severed web therefrom and to engage the leading web edge as it moves through the seal bar unit. The stream source has closely spaced openings to form the stream; the width and character of which is controllable for selective web engagement. A second air tube is located beneath the web and directs the air stream over the sealing roller to further release the web during the movement of the web.

Abstract: A method for forming an item by partially fusing selected portions of two sheets together. A non-heat-sensitive barrier sheet is inserted between two heat-sensitive sheets. The sheets are stamped with a die to fuse portions of the heat-sensitive sheets together remote from the barrier sheet. The barrier sheet and waste heat-sensitive sheet material is removed to leave the item. The method has particular application to stamping envelopes from a clear flexible vinyl material in a single continuous stamping operation.

Abstract: The present invention relates to a method for fuse-bonding or fuse-bonding and fuse-cutting a plastic sheet by an electric heat wire. It is possible to use for manufacturing a shopping bag and an inflatable toy of polyethylene, but especially, a mold for manufacturing a balloon made of aluminum vapour deposition nylon and projections therefor, such as legs, can be simply manufactured. A nichrome circular wire 7 with a size according to a thickness of a sheet 5 to be worked is bent along a shape line of an object, such as balloon or the like, and covered with fluorine resin coated glass cloths 8 with an adhesive agent, which is used as a mold heater 4. The sheet 5 to be worked, silicone rubber 6 and the like are laminated on the mold heater 4, pressed by a press mechanism 1, and heated momentarily by applying electric current from a power source, and then cooled.

Abstract: A method for making bags of synthetic material in which a tubular foil web of synthetic material is advanced in steps corresponding to the length of one bag. A continuously heated pair (11) of welding jaws grips the tubular foil web (3) of synthetic material prior to cutting and fixes the web in position. The tubular foil web (3) is then cut by means of the transverse cutting knife (10) before the heat of the pair (11) of welding jaws is completely transferred to the tubular foil web (3) of synthetic material. Then the heat is completely transferred to weld the bottom seam of the bag.

Abstract: An apparatus and method for processing and rewinding a web made of easily stretchably deformable plastic film or the like. The web is drawn from a supply roll assembly by a series of synchronously driven draw and transfer rolls and directly delivered to a rewind roll. The rewind roll is positively driven at a speed greater than speed imparted to the web by the draw and transfer rolls. However, the rewind roll is in peripheral contact with the last of the series of draw and transfer rolls so that the processed web is immediately transferred from the last web moving roll to the rewind roll, while the last roll exerts a drag on the rewind roll to control and match the speed of the rewind roll to the speed of the moving web.

Abstract: A welding and die cutting device for an apparatus for automatically forming bags on demand from an elongated web of film is selectively switchable between a first operating mode in which the formed bags are provided with unitary handles and a second operating mode in which the formed bags are fully closed and no handles are formed thereon. A first one of a pair of reciprocatable mobile holders carries a welding counter-plate to which is mounted a horizontal blade for transverse cutting and separation of formed bags from the web. A plurality of substantially vertical blades for longitudinally cutting the web to form handles on a bag being formed are carried on and depend outwardly from a bladeholder that is interposed between the first mobile holder and the counter-plate. The bladeholder is slidably and elastically linked to the first mobile holder for movement therewith and relative thereto.

Abstract: A container and method of making the same preferably from a single web of flexible material wherein the method comprises placing a V-fold, or modified flat V-fold, in a sheet of such material, creating two subsections whose V-fold members are attached to the respective subsections preferably along a longitudinal fold line. First and second side edge weld lines are made thereby connecting the respective subsections to their own V-fold members as well as those of the opposite subsections. Oblique weld lines then interconnect the point of intersection of the side edge weld lines and longitudinal fold line. The bottom wall is formed by folding the legs inwardly with the endmost portions of which pivoting along a lateral axis of the bottom wall upwardly towards the first and second side edge weld line thereby reinforcing the stress-bearing bottom.

Abstract: A method is disclosed for making end terminations for a plastic reclosable fastener or zipper, which incorporates a stop for the zipper slider wherein the zipper profile is cut apart with a hot knife which forces the melted material into cavities forming the end stops.

Abstract: In a L-sealer for heat-sealing center-folded thermoplastic film, wherein a pair of relatively movable clamping jaws grip and heat seal the facing film webs along an L-shaped seal line, a series of perforating pins are mounted to one clamping jaw to perforate the film webs closely adjacent the seal line. The perforations allow escape of air when the film is subsequently shrunk, the close spacing of the perforations to the seal line insuring that the perforations are disposed at the side of the packaged article when the film is shrunk to minimize entry of dirt and the like.

Abstract: A machine including a control system having a timer for producing bags made from thermoplastic resin films of varying thickness. A pair of feed rollers intermittently feeds a continuous flat tubular web of thermoplastic resin between an upper heat sealing bar and a lower sealing surface. The sealing bar, which approaches but does not contact the web, is heated to effect a weld bead on the web, a cutting edge severs the web adjacent the bead, and the feed rollers advance the web as the sealing bar and cutting edge are withdrawn. A sequencer provides timed control of a motor that operates the rollers and another motor that operates the sealing bar and cutting edge.

Abstract: A system for fusion bonding several attachments to a relatively large and bulky thermoplastic article employs means for fixedly securing the article, and a movable fixture selectively positionable relative to the thermoplastic article. The fixture includes a base plate held stationary during bonding operations, a gripping device supporting the thermoplastic article and longitudinally reciprocable relative to the base plate, and a pair of arms supporting a platen or other heating tool, also longitudinally reciprocable relative to the base plate. The tool supporting arms further can be pivoted to move the heating tool between an aligned position between the thermoplastic attachment and fixed thermoplastic article, and a remote, withdrawn position, to allow longitudinal movement of the attachment into engagement with the thermoplastic article, following use of the heating tool to simultaneously fuse selected surface portions of the thermoplastic article and attachment.