Abstract: A system for cryocooling biological samples, including a first chamber configured to hold a first amount a cryogenic liquid; a container holder positioned in thermal contact with the first chamber and configured to hold at least one removable container positioned therein, wherein the container is configured to hold a second amount of the cryogenic liquid and forms a second chamber; an elongated tube holder configured to hold at least one hollow elongated tube into the container; and a sample wand configured to hold and transfer at least one sample holder with a biological sample into the elongated tube while the elongated tube is in the container with the second amount of the cryogenic liquid therein.

Abstract: An ultrasonic welding method for joining a first thermoplastic part and a second thermoplastic part without causing visible read-through on an exposed surface of the second part. The method includes arranging the first part on an inner surface of the second part. The inner surface is opposite the exposed surface. The first part has an interface portion contacting the inner surface. The method includes causing a horn of an ultrasonic welding stack to be pressed against the first part by applying ultrasonic energy oscillating at a frequency in a range of 45-70 kHz through the horn, to thereby join the first part and the second part together. The horn has at least one protruding distal portion configured to penetrate through the first part as the ultrasonic energy is imparted through the horn. The distal portion has a length longer than a thickness of the first part.

Abstract: A distal end portion on a side of an object to be joined of a resonator for joining is so configured that a plurality of protrusions each having an outer face not including an angular shape edge are stacked in two or more steps in a direction in which the resonator for joining and a reception jig for joining oppose to each other and that a shape of a protrusion on the side of the object to be joined is made smaller than a shape of a protrusion on a side of the resonator for joining.

Abstract: Upon cutting a corner of a plastic bag, the cut-out portion is prevented from attaching to the plastic bag. A plastic film (1) is trimmed by a trimming cutter (7) to form a selvage (8). Every time that the plastic film (1) is intermittently fed, the trimming cutter (7) is moved by a trimming cutter moving mechanism, so that a corner of the plastic bag is cut by the trimming cutter (7) and the cut-out portion (11) is continued from the selvage (8).

Abstract: A plastic or other film bag is formed from a continuous extruded tube. The tube is flattened and sealed across its width at intervals to form bag bottoms. The bags are joined to one another at a perforation line and folded in thirds lengthwise prior to being rolled into a compact roll, either with or without supporting core. After folding the bags may be chisel cut through the center of the perforation line to assist in dispensing of the bags. The chisel cut will extend through all layers of the bag when folded, resulting in three chisel cuts in the bag. The bags may be gusseted for part or as much as all of their width. The bags may also be corona treated and printed on their outer surfaces. The bags may be formed from partially recycled materials and various combinations of linear low density, medium and high density polyethylene.

Abstract: A device for producing tubes for packaging tubes, comprising an elongated mandrel (3), around which a substrate web can be formed in order to produce a tubular form (4) that surrounds the mandrel (3) and can be conveyed along the mandrel (3) in a conveying direction (R), as well as welding means (9) for welding the substrate web along a welding region in order to produce a welding seam (11) and at least one first welding belt (34) that can be conveyed together with the tubular form (4) and fixes the tubular form in a contact region of the substrate web with itself by clamping the substrate web between the first welding belt (34) and a clamping partner, wherein means (13) are provided for expanding the tubular form (4) fixed by the first welding belt (34) and the clamping partner by plastically elongating the substrate web in the circumferential direction, wherein said means can be adjusted into a position, in which they radially protrude over the outer surface (14) of the mandrel section (31) of the mandrel (

Abstract: Apparatus, systems, devices, methods and computer program products configured to provide one or more of the following: improved rotary table or platform packaging systems, improved adhesive (glue) based film seal systems, and/or easier loading or releasing mounting systems of horns, forming collars and/or sprockets.

Abstract: The invention concerns a method of welding a laminate for the production of flexible tubular plastic bodies. The method comprises the following operations: a laminate is shaped around a welding tool, the ends of the laminate to be welded are heated, the ends are pressed together and at least partly cooled, the welded zone is deformed so as to increase its area, and the weld zone is cooled. The invention also concerns a device that is suitable for using the method mentioned above.

Abstract: A device for packaging products in a foil package includes a feeder for continuously supplying a foil web from a supply roll to a corner forming unit. The corner forming unit includes a curved deforming edge for deforming the flat foil web to a curved foil web having a reduced width, a deformer for forming a profile in the curved foil web, a roller for flattening the foil web, with the reduced width of the foil web at least substantially being maintained and overlapping sections being formed at the location of the profile, and a sealer for sealing the overlapping sections. The deforming edge and the deformer form part of an exchangeable unit. The sealer is movable along at least one guide, with the corner forming unit comprising aligning elements associated with the sealer, which aligning elements cooperate with further aligning elements associated with the deformer for correctly positioning the sealer relative to the deformer.

Abstract: A method for producing insulation tape. A strip of fabric is provided and a layer of insulation powder material is deposited onto the fabric. The fabric is folded over the insulation powder to form insulation tape that may be wrapped around pipes. The method of folding the fabric includes first bending the fabric into a trough shape that has a bottom portion and lateral upstanding flaps that terminate in lateral edges. The insulation powder may be deposited onto the bottom portion of the trough. The insulation powder is packed onto the bottom portion. Tape with adhesive on both sides is placed on one of the flaps so that when the flaps are folded in overlapping contact over the insulation powder the powder is enclosed and the flaps remain secured to each other. Stitching may be added to further secure the adhered flaps to each other and to the bottom portion.

Abstract: A method for forming a radio frequency identification (RFID) tag on a packing bag is disclosed and includes the steps of: equidistantly attaching RFID tags to a release film, one by one, to form a roll of tag web; installing the roll of tag web in a packing bag forming device to move the release film along a feeding direction of a packing material; changing a moving direction of the release film for peeling the RFID tags from the release film; intermittently pressing on the RFID tags for attaching the RFID tags to the packing material; bonding the RFID tags to the packing material with a melting technology; and processing the packing material by folding, sealing, and cutting to form packing bags securely installed with the RFID tags. A packing bag forming device for carrying out the method is also disclosed.

Abstract: An apparatus (50) for and method of manufacturing helically wound tubular structures (116) includes a rotating faceplate (74) upon which are mounted a plurality of diameter defining rollers (78) which, in operation, cause a strip material (80) to be plastically deformed into a helical winding which may be lain down in abutting or self-overlapping relationship to form said tubular structure (116).

Abstract: The invention relates to an elastic substantially tubular package for a semi-liquid or pasty extractable by a finger pressure product comprising a skirt, a head and optionally a cap, wherein said skirt is formed from a wound foil and is provided with a longitudinal weld seam formed by the overlapping of the edges thereof and the head is fixed to the circumference of the skirt end and forms an oval cross-section at the level of the skirt fixing area. The inventive package is characterised in that the end of the longitudinal weld seam contacting the head is located in or near an area where the radius of curvature of the oval cross-section is minimal.

Abstract: An apparatus for applying weft yarns in a cross direction to warp yarns assembled on a beam in parallel aligned relationship and having an adhesive scrim thereon includes a supply roll of the warp yarns on such a beam which are fed downstream of the apparatus by first laying the warp yarns onto a transfer belt to reduce the tension in the yarns and controlling them for application of the weft yarns. A transfer belt and warp yarns are first folded between folding bars into a cylindrical configuration where they are formed around the perimeter of an elongated mandrel having a heated section at its upstream end and a cooling section at its downstream end. The adhesive scrim is softened as the warp yarns pass over the heated section of the mandrel and shortly thereafter, weft yarns are wrapped around the warp yarns and the supporting transfer belt within a rotating tube having a plurality of longitudinally and circumferentially spaced spools of weft yarn disposed on its outer surface.

Abstract: An ultrasonic sealing apparatus prevents a sealing failure by preventing a tunnel (through passage) to form in the step portions in the vicinity of both end portions of longitudinally sealed portions, when the tubular laminated packaging material is transversely ultrasonically sealed. An ultrasonic sealing apparatus, in which a laminated packaging material containing a thermoplastic resin layer and a paper layer is formed into a tubular form and the tubular laminated packaging material is transversely ultrasonic sealed, includes a horn having an elongated and flat sealing face and an opposing jaw having an elongated pressing face which presses the laminated packaging material in cooperation with the sealing face of the horn, wherein the center portion in longitudinal direction of the pressing face of the opposing jaw is narrower than both end portions of the pressing face. Further, at a center portion in longitudinal direction of a pressing face of the opposing jaw, a recess having an arc shape, etc.

Abstract: The invention relates to a film tube (10) based on cellulose which is produced by extruding an aqueous cellulose-N-methyl-morpholine-N-oxide (NMMO) solution through a ring nozzle (21) onto a lining (3). The film tube (10) is manufactured by means of a vertically descending spinning in a spinning vat (12) in which a spinning bath (11) is located. The film tube (10) which is submerged in the spinning bath (11) passes through an air gap (9) between the underside of a nozzle block (7) and the upper surface of the spinning bath (11) and, internally, is pressurized, supported and slightly stretched in a transversal manner by compressed air. The film tube (10) is filled with an inner bath solution (31) via a supply tube (18). An idle roller (13) is situated near the bottom of the spinning vat (12) in order to guide the film tube (10) around and, afterwards, out of the spinning vat (12) in an upward sloping manner. The film tube is laid flat along a contact section (27) of the idle roller (13).

Abstract: Described is an installation (10) for producing multi-layer composite tubes (116). The installation (10) has a metal strip unwinding device (44), a metal strip storage device (48) adjoining the metal strip unwinding device (44), a metal strip shaping device (36) adjoining the metal strip storage device (48), an extruder station (12) adjoining the metal strip shaping device (36), and a cooling device (50) adjoining the extruder station (12). The metal strip shaping device (36) serves for shaping the metal strip (38) which is unwound from the metal strip unwinding device (44) into a metal tube with overlapping longitudinal edges which are welded to form the metal tube by means of a welding station (32) at the extruder station (12). In the extruder station (12) the metal tube is covered with an inner plastic layer in fixedly adhering relationship and with an outer plastic layer in fixedly adhering relationship. The composite tube produced in that way is cooled to ambient temperature in the cooling device (50).

Abstract: There is provided an apparatus and method for consolidation joining a thermoplastic preform to form a duct. The apparatus includes first and second longitudinally extending support structures. The first support structure at least partially defines a cavity for supporting the preform in a desired configuration of the duct. The second support structure extends in the cavity such that the preform can be supported between the first and second support structures. The second support structures can include an elastomeric device that is configured to adjust radially and urge the interface of the preform against the first support structure. A heater is configured to heat an interface of the preform to above a glass transition temperature. The resulting duct is has a longitudinal consolidation joint and defines a passage.

Abstract: A laminated structural body is manufactured by laminating unidirectionally arranged strands and a web such that two layers of the web sandwich the strands therebetween. A cylindrical web is delivered in a direction parallel to a central axis thereof. A polymer liquid is discharged from a spinning head, which is disposed in the cylindrical web and rotated about the central axis of the cylindrical web, toward an inner surface of the cylindrical web to spin strands of the discharged polymer liquid. The spun strands are arranged in a direction substantially parallel to the circumferential direction of the cylindrical web and laminated on the inner surface of the cylindrical web. The cylindrical web with the strands laminated thereon is folded flatwise to sandwich the strands between the two folded layers of the web.

Abstract: A tape-sheathing device is provided to eliminate peeling of a tape adhered to an electric wire, in which a first die, a second die and a third die having tapered holes are serially arranged. An electric wire fed by a feed roller and a tape are inserted together into respective dies, and the tape is installed incrementally on the electric wire by the respective dies. Opening portions are provided in the first die and the second die by notching a portion in the range of about 90° of the downstream end portions of the first and second dies, in a condition in which the opening in the first die and the opening in the second die are shifted by about 90° relative to each other. When the tape passes through the first die, it is adhered to a partial peripheral portion of the electric wire, adhered to about three quarters of the wire by passage through the second die, and adhered completely around the periphery by passage through the third die.

Abstract: A packaging filler product and machine for making the product wherein the product includes an air-filled pouch having sealed edges and spots connecting the opposing sheets of the pouch together. The machine includes a frictional belt system for gripping a bulk supply of pouched package material and that urges the bulk material past an inflation device for serially introducing air to the interior of each pouch of the package material followed by employing a heater that heat seals the opening into the interior of each pouch. A trim cutter eliminates unnecessary material and individual pouches are separated from the bulk supply by using perforations provided between adjacent pouches. A feed mechanism including the belt system is provided for moving the bulk supply of pouches from a supply spool past the heater and through the trim cutter. Tensioning and idle rollers guide the bulk supply of pouches through the machine in an in-line series.

Abstract: A back-up pad is provided over an anvil surface of a back-up plate, and between the anvil surface and a sealing surface of a sealing die, in an apparatus for forming seals between layers of film material. The back-up pad has a slip layer on one side thereof and a firm polymeric support layer on an opposite side thereof, the slip layer opposing the sealing face of the die so that the layers of film material pass between the sealing die and the back-up pad during seal formation. The polymeric support layer may have a Shore-A hardness of at least 10 at 20° C. and a dynamic loss tangent of less than 0.1 from 20° C. to 80° C. An example of a support layer is a polycarbonate pad, and an example of slip layer is a glass cloth coated with Teflon™. The back-up pad is particularly useful for forming lap seals in relatively thick film materials, such as laminated films having multi-layered films laminated together.

Abstract: A system for manufacturing large quantities of seamed belts for printing systems with controlled imageable seams, which belts require a defined circumference and width, from suitable belt material in a large roll thereof, by feeding a continuous web of that belt material from the roll in (or cut to) a width that is at least as wide as the defined circumference of the finished seamed belt into a seam cutting station, where the opposing side edges of the continuous web of belt material are cut as they move through the seam cutting station into opposing seam-forming mating edge patterns, preferably mating puzzle-cut patterns cut by small movement laser beams on each side of the moving web.

Abstract: A belt-like film 18 is moved along a plate 15 folded to be rectangular in section, so that the film 18 is formed into a continuous tube by a tubular frame of the plate 15. A spring piece 30 having an anvil 31 bulged out therefrom is securely held on the inner side edge 16 of the aforementioned plate 15, and an ultrasonic hammer 32 is located face to face with said anvil 31, so that both side edges of the belt-like film 18 formed into a tube are placed on the anvil 31 to be melded by the ultrasonic vibration of the hammer 32.

Abstract: A longitudinally reinforced liner for cured in place pipe rehabilitation of an existing pipeline having a plurality of high-strength low-elongation fiber bundles disposed between resin impregnable layers of the liner is provided. The bundles of reinforcing fibers are continuous lengths of reinforcing fibers laid out adjacent to each other and parallel onto about one-half of the middle region of the upper surface of the outer resin impregnable layer. An inner resin impregnable layer formed into a tube is laid up against the outer layer and the reinforcing fiber bundles and a plurality of bundles of reinforcing fibers are laid out along the exposed surface of the flattened inner layer. The edges of the outer layer are wrapped around the inner layer and bundles of reinforcing fibers and the secured to form an outer tubular layer with the reinforcing strands remaining in position between the two layers.

Abstract: A drip irrigation hose of the continuous emitter type in which the outlets from the regulating passage each comprise a single longitudinal slit. By controlling the length of the slits and the flexibility of the film, water drips from the outlets when the hose is pressurized without clogging when the hose is depressurized. The slits are sufficiently long and the film is sufficiently flexible so the water drips from the outlets when the hose is pressurized. The slits are sufficiently short and the film is sufficiently rigid so the outlets close completely when the hose is depressurized. An outlet forming wheel has a knife blade on its periphery. A backing wheel engages the outlet forming wheel to establish a first nip therebetween. The backing wheel has on its periphery a circumferential slot into which the knife blade fits at the first nip. A rib forming wheel has around its periphery impressions that define a desired track pattern for the ribs.

Abstract: An apparatus for manufacturing packing material from a web material includes a folding member that folds the web material into a folded web, a longitudinal sealing assembly for sealing the longitudinal ends of the folded web material forming a continuous tube, and a lateral sealing assembly including a pair of lateral sealing rollers that effect staged lateral sealing of the continuous tube of the web material. Pressurized air is outlet after the longitudinal seal is formed and prior to forming the lateral seal. With this arrangement, air-filled pockets suitable for packing material can be readily formed for immediate use. The arrangement is compact in size and capable of producing packing material on demand and at a sufficient rate to satisfy immediate packing material needs.

Abstract: A tampon applicator member can be made from a roll of sheet-like material. A flowable material is applied to one surface of the sheet-like material and is transformed into a solid polymeric layer. The coated material is separated into a plurality of applicator blanks. A first surface of each blank, corresponding to the first surface of the individual sheet-like web, has an uncoated portion adjacent a first side edge, parallel to the longitudinal axis, and a coated portion. An adhesive is applied to the uncoated portion of the first surface of a blank, and the blank is rolled to form a tubular member having a longitudinal seam. The seam has a first edge of the inner surface of the structural member superposed over and adhered to an uncoated opposite edge of the outer surface of the structural member.

Abstract: The invention concerns a tool for sheathing a bundle (1) of wires (2) by enveloping this bundle in a flexible adhesive ribbon (3) which is transversely wound about itself around the bundle (1) and whose longitudinal edges (5) are joined by gluing. It comprises a frame (60) equipped with an enveloping head (65) comprising a shaping device (68) for the ribbon (3) which is mounted in a fixed manner on the frame (60) and which possess a return edge (70) in the shape of a V arranged so as to start a longitudinal folding of the ribbon (3), and at least one first pair of clamping jaws (72) mounted on the frame (60) which are movable between an open position and a closed position in which they are applied against each other by means of return means to ensure the gluing of the longitudinal edges (5) of the ribbon (3) against each other and they define between themselves a passage orifice (79) for the sheathed bundle (1).

Abstract: A self cleaning drip irrigation hose comprising an elongated strip of plastic film folded longitudinally to form first and second overlapping longitudinal margins. A first longitudinal bead partially seals the overlapping margin. A second longitudinal bead outboard of the first bead partially seals the overlapping margins. The first and second beads have a repeating longitudinal pattern that forms a flow regulating channel and opposing inlets spaced along the length of the first and second beads. Outlets from the flow regulating channel to the exterior of the hose are spaced from the inlets to create a pressure drop across the flow regulating channel. A third longitudinal bead outboard of the second bead completely seals the overlapping margin. The second and third beads form a water access channel to the inlets in the second bead such that the inlets in the first bead when plugged are back flushed by water flow through the inlets in the second bead.

Abstract: A method of manufacture of a shaped flexible tube container, typically having a square or "D" section tube, from a flexible plastic tube (15) of substantially round cross section, in which longitudinally extending creases (31, 32) are formed in the wall of the tube by a creasing means (16, 17) acting on the external surface of the tube. The creasing means preferably comprise at least air of rollers (16 or 17) and the tube passes between the two rollers.

Abstract: In the manufacture of multichamber tubular containers it has been found that the inner divider walls should be bonded to the exterior wall by means of a band sealing method. In the band sealing method there is a band that contacts the upper film and a band that contacts the lower film that are to be bonded. In the present processes the upper band contacts the inner divider wall while the lower band contacts the exterior surface of the outer wall of the tubular container. In order to prevent the marring or otherwise putting a defect into the exterior surface of the outer wall the temperature of the lower band is maintained at a lower temperature than the upper band. This will decrease the temperature of the exterior surface of the outer wall and prevent imperfections in the exterior surface of the outer wall. The advantage is a multichamber tubular container without any imperfections in the exterior surface. This enhances the overall appearance of the tubular container.

Abstract: A tube-forming machine and process has a supply for delivering an elongate, folded, plastic web along a path of travel. The web may be clear polyethylene folded treated surface to treated surface. A cutting mechanism is positioned along the path including a hard cylindrical roll and a cutter having a cutting head and means to bias the head toward the roll. A rotatable sealing drum has a cylindrical web engaging surface delineating a further portion of the path. A set of circumferentially spaced flame-emitting nozzles are positioned adjacent the drum surface section. Each of the nozzles includes a tip disposed within the cylinder delineated by said drum surface and has an axis disposed in an imaginary radial plane. Each tip is directed radially upwardly to impinge its flame against portions of a web being fed along the path when such portions project from said drum surface. Each tip axis is at an angle from 90.degree. to 60.degree.

Abstract: A continuous web of a preprinted heat shrinkable film with a heat sensitive adhesive on one surface thereof is wound around an outer periphery of a core member in such a manner as to overlap opposite longitudinal edges of the film to one another and form a continuous tubular label with the heat sensitive adhesive applied surface inwardly facing. A predetermined length of the continuous tubular label is cut into individual tubular labels, as the continuous tubular label is drawn downstream. The individual tubular label is applied over a container having a portion of a gradually decreasing cross section, from a portion of a smaller cross section of the container. The individual tubular label applied over the container is heated. Thereby, the individual tublar label is shrinked into intimate contact with the container with its portion of a larger cross section being bonded to the individual tubular label via the heat sensitive adhesive applied to the inwardly facing surface.

Abstract: A tube-tape-forming apparatus having a tube-forming base (1, 41) with a half-fold means (5, 46) on a feed end (2, 42), a full-fold means (7, 48) on a cut-off end (3, 43) and a transition-fold means (6, 47) intermediate the half-fold means and the full-fold means. .The half-fold means are guides (8, 11, 14, 15, 49, 52) which fold single-side-adhesion tape (26) in half linearly with nonadhesive sides (30) in contact. The transition-fold means brings opposite sides of folded tape towards each other selectively to form variously loop-folding with overlap of sides of the tape. The full-fold means are guides (19, 21, 23, 71, 88) which press the overlapped sides of the folded tape together in adhesive relationship to form variously circumferential (31) or flattened (32) linear-seam tube tape that can be used in flattened form or hand-inflated to be used in tubular form. The transition-fold means and the guides can be provided with rollers (33, 91).

Abstract: An apparatus for dispensing adhesive tape tubes with pressure sensitive adhesive oriented at the outer circumference there on. The tube is formed from standard one-sided pressure sensitive adhesive tape. A continuous tubular profile is established by passing the tape through a profile configurator with the adhesive orientated outwardly to cause the tape to be formed into a spiral cone with overlapping edges. The overlapping edges of the tape merge together radially and become in mutual adhesive contact beyond said configurator to form tubed tape of cylindrical characteristics with a longitudinal seam.

Abstract: An extrusion assembly for extrusion of a triple walled (plastic/metal/plastic) pipe includesa first extrusion apparatus, for extruding an inner plastics layer of the pipe, having an extruder with a coaxial outer extrusion sleeve and inner extrusion die,a shaping sleeve surrounding and substantially coaxial with the extruder, which shaping sleeve is capable of shaping a U-section form metallic layer passing through it into a tubular configuration and a welder for welding the metallic layer of tubular configuration to provide a metal tube,a conduit for supplying a pressurized gas internally of the pipe whereby extruded plastics material emerging from the first extrusion apparatus is forced against an internal surface of the metal tube, anda second extrusion apparatus, for extruding an outer plastics layer of the pipe, having a body part and a supply channel within the body part for supplying plastics material,which extrusion assembly has at least one of,(a) an essentially annular section recess in the body part

Abstract: An apparatus and method for applying adhesive on opposite edges of a longitudinal slit formed in a tubular body of resilient insulation material is provided. The apparatus includes a conveyor which moves the tubular body along a conveyor path. A feed assembly feeds a pair of tape strips along separate feed paths so that an adhesive applicator located adjacent to each feed path at an application point applies adhesive to a surface of the tape strip as it is fed along the feed path. A wedge-shaped plow is formed from a pair of flat plates which converge at an acute angle toward one another. The flat plates each have a leading edge which directs each tape strip from the feed paths along an exterior surface of one of the plates along lines parallel with the conveyor path.

Abstract: A drip irrigation hose of the continuous emitter type in which the outlets from the regulating passage each comprise a single longitudinal slit. By controlling the length of the slits and the flexibility of the film, water drips from the outlets when the hose is pressurized without clogging when the hose is depressurized. The slits are sufficiently long and the film is sufficiently flexible so the water drips from the outlets when the hose is pressurized. The slits are sufficiently short and the film is sufficiently rigid so the outlets close completely when the hose is depressurized. An outlet forming wheel has a knife blade on its periphery. A backing wheel engages the outlet forming wheel to establish a first nip therebetween. The backing wheel has on its periphery a circumferential slot into which the knife blade fits at the first nip. A rib forming wheel has around its periphery impressions that define a desired track pattern for the ribs.

Abstract: An apparatus for the production of tubular bodies, in particular for packaging tubes, from a foil strip (48) which comprises weldable plastic material and the longitudinal edges of which are thermally joined together has a shaping belt (46) which co-operates with shaping rollers (59, 60) and which shapes the foil strip (48) around a mandrel (45) to provide a tubular body, a lower driven transportation belt (20) which runs in the mandrel (45) and an upper driven transportation belt (33), the longitudinal edges of the foil strip (48) being accommodated in mutually overlapping relationship between the transportation belts. The upper transportation belt (20) is in the form of an endless belt which passes beneath a heating means, a pressing means and a cooling means and the heating means is in the form of an inductively operative high frequency heating means.

Abstract: The present invention relates to an apparatus and method of manufacturing vacuum cleaner bags with a unique tri-lock top and bottom seal. The paper end of at the end of the open bag length is sealed onto itself with seam-paste glue three times providing an extra strong seam to accommodate the ever increasing air pressure created by today's powerful cleaners.

Abstract: A heating system for joining plastic films which is capable of matching the potential of the laser. The system comprises a burner assembly and a workholder. The burner assembly includes a torch tip with an inner diameter of 0.016 inch which is capable of delivering a hot, concentrated flame onto a narrowly exposed film workpiece at a 15.degree.. The workholder includes a heat-conductive base roll and a plurality of hold-down rolls which expose an edge portion of approximately 0.0625 inch so as to prevent the plastic film from shriveling away from the joint. These features in combination permit the advantages both of high speed manufacture and of a high-quality bead seal.

Abstract: A method and apparatus for continuously forming a laminated tubular body, disclosing the joining of opposite longitudinal edges of a strip of sheet material (5) to form a tubular body, extruding a hollow plastics lining member (1) within the body, expanding the hollow lining member within the tubular body to form a substantially continuous lining, pressure means (66, 67, 71, 72) for pressing the inner lining into sealing engagement with said inner surface, and cutting means (16) for cutting the continuously formed laminated tubular body into preselected lengths.

Abstract: A drip irrigation tape consists of a strip of flexible material having an elongated, indented channel formed along a first side edge, the channel being of serpentine configuration, the strip being folded lengthwise so that the side edges overlap to form a first conduit, and the opposite side edges being joined together at least along spaced seal lines along opposite edges of the channel to define a secondary conduit. Inlets and outlets are provided along the length of the channel. A method for manufacturing the tape includes the steps of forming the indented channel on a mandrel before sealing the overlapping edges of the strip together by heat sealing or ultrasonic welding.

Abstract: A drip irrigation tape consists of a strip of flexible material having an elongated, indented channel formed along a first side edge, the channel being of serpentine configuration, the strip being folded lengthwise so that the side edges overlap to form a first conduit, and the opposite side edges being joined together at least along spaced seal lines along opposite edges of the channel to define a secondary conduit. Inlets and outlets are provided along the length of the channel. A method for manufacturing the tape includes the steps of forming the indented channel on a mandrel before sealing the overlapping edges of the strip together by heat sealing or ultrasonic welding.

Abstract: In an apparatus for the production of tubular bodies such as tubes from a foil strip including a weldable plastic material, the longitudinal edges of which are welded together between two endless belts under the effect of heat and pressure with subsequent cooling, part of a belt runs against a mandrel in which individual portions thereof can be set to different temperatures to provide for selective control of the belt in order to increase the rate of production.

Abstract: On the welding arm of a welding machine is mounted a coaxial application pipe with removable transport means and an application nozzle. Into this application pipe is fed a block-shaped hot-melt mass, in the direction opposite the advance direction of the sheet metal tube, guided in direction (V) of the application tube, melted in the area of a narrowing heater, passed through a supply tube to the application nozzle and applied or sprayed as a hot-melt strip to the inside of the longitudinal weld seam of sheet metal tubes.The application of a hot-melt strip is suitable in particular for the protection of the longitudinal seam of a tin-plated can shell.

Abstract: A stationary mandrel (1) is wrapped in a separating film (3) at the front, as seen in the draw-off direction (A). A gel coat layer is coated onto the film (3) and partly gelled by means of a heater (12). The gel coat layer is coated with liquid polyester, wrapped in a longitudinally extending glass-fibre fabric (20) in an overlapping manner and wound helically in a glass sliver (21). These layers are hardened by means of a further heater (24,25), so that a structural supporting profile for coating on the following layers is obtained. The mandrel (1) is set off after the further heater (24,25). For coating on the further layers, liquid polyester, a fibre fabric (34) and a helically wound sliver (37) are applied alternately. These layers are fulled and coated with an outer gel coat layer. The polyester is hardened in an oven (50). A grab device (52) draws the section off continuously from the mandrel (1). Finally, the section is cut to length.

Abstract: An apparatus for laminating at least two strips of strip material and forming the laminate into lightweight, thin-walled tubular members that may be used in the construction of non-combustion smoking articles.

Abstract: A method and apparatus for manufacturing a continuous metal tube having a plurality of electrical conductors disposed therein, by using a spring member to depress the electrical conductors while a flat metal strip is formed into a tubular member and welded to enclose the electrical conductors. The spring member functions to protect the electrical conductors from heat damage. The welding occurs completely downstream of the spring member in order to avoid excessive heat buildup in the spring member.