US3287878A - Apparatus for producing tetrahedron containers provided with an access aperture - Google Patents

Apparatus for producing tetrahedron containers provided with an access aperture Download PDF

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Publication number
US3287878A
US3287878A US26058763A US3287878A US 3287878 A US3287878 A US 3287878A US 26058763 A US26058763 A US 26058763A US 3287878 A US3287878 A US 3287878A
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United States
Prior art keywords
tape
sheet
sheet material
holes
heater
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Expired - Lifetime
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English (en)
Inventor
George A Mobley
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Clemson Industries Inc
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Clemson Industries Inc
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Filing date
Publication date
Priority to BE644300D priority Critical patent/BE644300A/xx
Application filed by Clemson Industries Inc filed Critical Clemson Industries Inc
Priority to US26058763 priority patent/US3287878A/en
Priority to GB677964A priority patent/GB1030643A/en
Priority to CH218764A priority patent/CH437108A/de
Priority to BR15707364A priority patent/BR6457073D0/pt
Priority to NL6401783A priority patent/NL6401783A/xx
Priority to DK91064A priority patent/DK109708C/da
Application granted granted Critical
Publication of US3287878A publication Critical patent/US3287878A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B29C66/72343—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8182—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
    • B29C66/81821—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/007—Lining or sheathing in combination with forming the article to be lined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/06—Applying adhesive tape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8122—Applying patches
    • B31B50/8123—Applying patches the blanks remaining stationary during application of the patches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1304—Means making hole or aperture in part to be laminated
    • Y10T156/1309—Means making hole or aperture in part to be laminated and securing separate part over hole or aperture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6476—Including means to move work from one tool station to another
    • Y10T83/6484—Punch or die station

Definitions

  • Tetrahedron containers are rapidly gaining acceptance as containers for a wide variety of liquids, despite certain difficulties associated with the use of the containers, because of the substantial economies realized by the use thereof instead of the conventional rectangular containers.
  • One of the problems associated with the use of tetrahedron containers is that by the very nature by which the containers are formed, it is difiicult to provide means for obtaining access to the contents of the container.
  • Another object is to provide such apparatus which provides an unsealed portion on the tape to facilitate its removal.
  • Still another object is to provide apparatus which pro vides such unsealed portion on the tape which projects outwardly from the container walls so as to provide a readily locatable pull tab.
  • Still a future object is to provide apparatus readily mountable on existing commercial apparatus which form sealed tetrahedron containers.
  • the apparatus and methods of this invention employ heat sealing means which reciproca-bly travel with the sheet material used to form the containers while segments of the tape are being pressed against the sheet of material in a heated condition.
  • A-n unsealed portion of the tape, to provide a pull tab, is produced by positioning the heat sealing means with respect to the tape segments so that a portion of the segment remains unheated.
  • a wing effect, provided by the unsealed portion of the tape projecting outwardly from the walls of the containers can be provided by positioning the access aperture on the tetrahedron container at approximately that apex of a wall of the container which is uppermost when the container is resting on the wall opposite the aperturebearing wall, with the uppermost end of the tape segment being the unsealed end.
  • the width of the tape is such that it is wider than the apex portion of the aperturebearing wall which the unsealed end portion covers, the end portion will project outwardly from the aperturebearing wall. As that end portion is unsealed, it will also project outwardly from the walls adjacent the aperturebearing wall.
  • the apparatus and methods of this invention employ laminated stock material, the innermost lamina of which is .a layer of thermoplastic material substantially impervious and inert to the contents of the container, such containers being now well known in the art.
  • the laminated material used to form these containers is ordinarily one or more layers of paper laminated to one or more layers of polyethylene or polypropylene so that the face of the laminated material which will form the inner face of the container will present a liquid impervious face to the contents.
  • the outermost lamina is ordinarily moisture resistant, either by being formed of a layer of wet strength paper or of a lamina of thermoplastic material such as wax or polyethylene, or both.
  • the container will bear the conventional transverse sealed seams and longitudinal butt, i.e., inside face to inside face, seam or lapped, i.e. inside face to outside face, seam.
  • the apparatus and methods of this invention can provide a tape covered aperture at any point on any wall of the tetrahedron container, except at the longitudinal or transverse seam areas, such an aperture is ordinarily and preferably provided near the apex which is uppermost of a wall which faces upward when the container rests on the opposite wall.
  • This access aperture will ordinarily be a small round hole which, if the container is a pint or half-pint size, will be about the size which will receive a drinking straw.
  • This opening or aperture is sealed by a tape which covers the opening and is bonded to the outer face of the portion of the wall bearing the aperture by the thermoplastic material which forms at least the inner face of the tape, thus providing a seal which resists accidental unsealing.
  • the apparatus is ordinarily arranged so that there is provided an end portion on the tape, preferably the uppermost portion, which is not sealed to the container wall, thus providing a pull tab.
  • the unsealed edge portion preferably extends outwardly away from the container walls. Such an arrangement permits even a small child to remove the tape without instruction.
  • the tape is preferably formed of paper laminated to polyethylene or paper impregnated with polyethylene, polypropylene, or wax.
  • FIGURE 1 is a schematic view ofa tetrahedron container forming apparatus with attached aperture forming mechanism which incorporates a tape applicator mechanism of this invention
  • FIGURE 2 is a simplified front planar view of a tape seal forming mechanism of this invention
  • FIGURE 3 is a simplified side planar view of the mechanism of FIGURE 2 taken along line 11-11;
  • FIGURE 4 is a perspective view of a sealed tetrahedron container having sealed opening in the wall thereof which can be formed by the apparatus shown in FIGURES 13;
  • FIGURE 5 is a highly enlarged cross-sectional view 3 of the opening bearing portion of the wall of the tetrahedron container shown in FIGURE 4.
  • a roll of paper 10 of the type shown in cross-section in FIGURE 5 is guided by guides 20, 21, 22 and 23, through tube forming means 30, into contact with longitudinal seam forming heat sealing means (not shown), filling means 31, transverse.
  • a punch mechanism is provided on the apparatus and arranged to operate in timed relationship with the transverse seam forming bars 32 and 33, so that pairs of holes 11 and 12 will be properly positioned on pairs of the completed containers 34, by a punch cam 43 mounted on the drive shaft 44 which also drives the heater bars 32 and 33.
  • the cam 43 closes switch 45 which completes circuit 46, connected to an source, thus causing plunger of solenoid 51 to be driven downward, striking a punch lever 52 pivotally mounted by pivot 53 to punch frame 54, which frame is also pivotally mounted by a pivot 55 to avoid tearing the stock 10 by the movement of the stock while the punches 56 and 57 are pressed through the stock.
  • punch lever 52 forces the spring loaded punches 56 and 57 through the paper stock, thus producing a pair of spaced holes 11 and 12 in the paper stock.
  • switch 45 is only momentarily closed by punch cam 43, the punches 56 and 57 are quickly withdrawn from the paper stock by springs 58 and 59.
  • the paper stock bearing the pairs of holes then moves toward the tape sealing mechanism over a bed 60 of the carriage body 61 thereof.
  • the carriage body is slidably mounted on the tetrahedron forming apparatus so as to be reciprocally movable a short distance parallel with the movement of the paper stock.
  • a pair of rolls of tapes 62 and 63 intermittently advanced by a pair of tape feed driven rolls 64 and 65 which Work cooperatively with tape feed pressure rolls 66 and 67 to advance the free ends 68 and 69 of the tapes 62 and 63 which project past a pair of guide slots 70 and 71, which slots also act as one member each of a pair of scissor type cutting devices which intermittently cut the projecting ends 68 and 69 of the tapes 62 and 63 to provide the tab seals 13 and 14 covering apertures 11 and 12.
  • the heater platens 76 and '77 have a width less than the width of the tapes 62 and 63 or are positioned with respect to the ends 68 and 69 thereof so that a portion of the tape ends are not sealed to the stock, thus providing pull tabs on the tetrahedron containers 34 when formed.
  • Mounted on the heater platens 76 and 77 are moving cutting edges 78 and 79 which provide the other member of the scissor type tape cutting devices.
  • a tape feed cylinder 81 which, through its piston rod 82, a clevis 83, crank 84 and one way clutch 85 tape feed linkage, intermittently advances the tape feed rolls 62 and 63 and thus advances tape ends 68 and 60.
  • a threeway tape feed valve 90 mounted in a fixed manner on the tetrahedron forming apparatus, to detect when the carriage body 61 reaches its station closest to the punch mechanism 40 is a threeway tape feed valve 90, joined by a flexible hose 91 to tape feed cylinder 81 and also connected by a second hose 92 to a source of compressed air 93. Similarly mounted is an end-of-stroke bleeder valve 94, connected by a hose 95 to a four-way bistable valve 96. Also fixed mounted on the tetrahedron forming apparatus is a carriage return cylinder 97, connected by a hose 98 to fourway valve 96.
  • Four-way valve 96 is connected by flexible hose 99 and hoses 99a and 99b to pressure cylinders 72 and 73, and is connected by hose 100 to the source of compressed air 93, and by hose 101 to a cam bleeder valve 102 activated by bleeder valve cam 103 mounted on drive shaft 44.
  • Cams 43 and 103 are mounted on shaft 44 so that cam bleeder valve 43 is activated when a pair of holes 11 and 12 are properly positioned under heater platens 76 and 77.
  • FIGURES 2 and 3 illustrate a preferred embodiment of the above-described tape sealing mechanism.
  • a tape feed mounting frame 201 is rigidly mounted on the tetrahedron container forming mechanism adjacent the area where the feed stock 10 is unrolled, as shown schematically illustrated in FIGURE 1, so that the stock passes through the tape feed mechanism between the area where the apertures are made in the stock and the area where the stock is formed into containers.
  • Slidably mounted on the mounting frame 201, by means of a pair of slide rods 202 and 203 is the carriage body 205.
  • Low friction mounting and movement is achieved by ball bushings 206 and 207 mounted in bushing tubes 208 and 209.
  • the ends 68 and 69 of the rolls of tapes 62 and 63, shown in FIGURE 1, are fed into the carriage body 205 by a pair of tape slides 211 and a pair of tape slide lids 212, each of which is provided in two parts, i.e., an outer section 212a, which is raisable by means of hinge 213 to facilitate loading of the tape, and an inner section 212b, which is spring loaded by tape slide lid spring 214.
  • Tape slide 211 is mounted on the carriage body by tape slide holder 215.
  • the tape slide 211 and the inner section 21212 of the tape slide lid 212 have open portions 216 and 217 to permit the tapes 62 and 63 to be intermittently advanced by the pair of driven tape feed rolls 64 and 65 (only one of which is visible in FIGURE 3), each of which is mounted above a tape slide 211 on the carriage body 205 by tape feed roll shaft 218 for coaction with tape feed pressure rolls 66 and 67 (only one of which is visible in FIGURE 3) which are rotatably mounted, by shaft 219 on spring loaded tape feed pressure roll arm 220, On carriage body 205 by tape feed pressure roll arm shaft 221.
  • Tape feed driven rolls 64 and 65 have multiple grooves 222 in their tape engaging surfaces for obtaining positive and nonslipping engagement with tapes 62 and 63.
  • Each of tape feed driven rolls 64 and 65 are rotated counterclockwise by means of a one-way clutch system 85 which rotates the tape feed driven rolls 64 and 65 a partial turn with each upstroke of the tape feed piston rod 82 of the tape feed cylinder 81.
  • the tape feed piston rod 82 is joined to the one-way clutch system 85 by means of a tape feed clevis 83 joined through pin 83a to tape feed crank 84.
  • Slots 70 and 71 are provided in stationary blade members 225 and 226 to receive the ends 68 and 69 of the tapes 62 and 63 after leaving the pair of tape slides 211. These slots 70 and 71 are canted with respect to the horizontal plane of the carriage body to permit the tape ends to be cut with a scissors-like action.
  • the bottom cutting edges 227 and 228 of the slots 70 and 71 provide the cutting edges of the stationary blade members 225 and 226.
  • the sheet material 10 used to form the tetrahedron containers 34 is fed through throat 230 of carriage body 205 so that the aperture bearing portion of the sheet material is positioned under the ends 68 and 69 of the tapes 62 and 63 which project beyond the stationary blades 225 and 226.
  • a pressure pad assembly 232 mounted to the carriage body 205 by pressure pad mounting 231, to provide a resilient support for the sheet material 10 below the heater platen portion of the tape seal mechanism, is a pressure pad assembly 232, including a pressure pad holder 233. Tightly mounted on the upper surface of pressure pad holder 233 is a pair of rubber or other resilient pressure pads 234 and 235 separated by a pressure pad spacer 236.
  • a low friction and heat resistant polyfiuoroethylene (Teflon) pressure pad cover 237 Covering the upper surface of the pressure pads and spacer is a low friction and heat resistant polyfiuoroethylene (Teflon) pressure pad cover 237. Slippage of the pressure pads 234 and 235 and pressure pad spacer 236 in pressure pad holder 233 is prevented by pressure pad stops 238 secured to the pressure holder 233.
  • Teflon polyfiuoroethylene
  • a forward plate 240 of carriage body 205 for vertical alignment respectively with slots 70 and 71 of stationary blades 225 and 226 by means of upper and lower pressure cylinder heads 241 and 242 are a pair 72 and 73 of pressure cylinders, having respective downwardly projecting piston rods 74 and 75.
  • piston rod feet 243 and 244 mounted to each of which is mounted a heater platen 76 and 77, respectively, but separated therefrom by a first 247 and second 248 layer of thermal insulation.
  • Each heater platen is provided with a cavity 249 in which is mounted an electrical heater 251 having terminals 252a and 25212 connected to an source.
  • each of heater platens 76 and 77 are respective platen blades 78 and 79 arranged for sliding contact with stationary blades 225 and 226, which provide the moving cutting edges 256 and 257 to work cooperatively with stationary cutting edges 227 and 228 to shear the end portions 68 and 69 of tapes 62 and 63 which project outwardly from slots 70 and 71.
  • the bottom faces of platens 76 and 77 provide pressure surfaces 258 and 259 to hold the severed ends of the tapes tightly against respective aperture hearing portions of the sheet material 10.
  • These pressure surfaces have respective indented portions 261 and 262 so that the width of the pressure surfaces is less than the width of tapes 62 and 63, thereby leaving a portion on each of the severed tape ends 13 and 14, shown in FIG- URE l, unsealed to the sheet material 10, which provides the pull tab 407 shown on the container shownin FIG- URE 4. If the recessed portion is provided on only a corner of the platens 76 and 77, then only one corner of the tape end will remain unsealed to the sheet material 10.
  • carriage return cylinder 97 mounted on the carriage body 205 so that its push rod 121 can contact a stop 264 provided on the carriage body 205.
  • carriage return cylinder 97 Also mounted on the carriage body 205 is a cam assembly 266 having tapered ends which provide a tape feed cam 266a and end-of-stroke cam 266b, respectively.
  • valve mount 268 Vertically mounted on the tape feed mechanism mounting frame 201 by valve mount 268 are threeway tape feed valve 90 and end-of-stroke bleeder valve 94.
  • a pair of cam follower arms 271 and 272 are mounted through respective hinge pins 273 and 274 for up-and-down hinged motion.
  • cam follower rollers 275 and 276 Attached to the end of cam follower arms 271 and 272 are respective cam follower rollers 275 and 276 which contact feed cam 266a and end-of-stroke cam 266b, respectively, and in so doing raise push rod 110 of threeway tape feed valve 90 and push rod 120 of end-of-stroke bleeder valve 94, respectively.
  • tape feed cylinder 81 In operation, when tape feed cam 266a contacts cam follower roller 275, thereby causing cam follower arm 271 to lift push rod 110 of three-way tape feed valve 90, tape feed cylinder 81 is thereby connected through tube 91, three-Way tape feed valve 90 and tube 92 to compressed air source 93.
  • This air pressure forces piston rod 82 upward, overcoming .the means (which can be a spring or lower air pressure) within the cylinder 81 which normally holds piston rod 82 in extended position.
  • This upward movement causes feed rolls 64 and 65 to rotate in a counterclockwise direction, thereby advancing tapes 62 and 63 so that their ends'68 and 69 protrude from slots 70 and 71 a predetermined distance sufficient to cover apertures 11 and 12 in sheet material 10.
  • Four-way valve 96 is equipped with a pressure equalizing capillary passage 116. After the air pressure has been bled from cavity 112 by bleeder valve 102 (which immediately closes again as cam 103 moves past push rod 111) and the piston 113 and shuttle valve 114 have shifted into cavity 112, passage 116 permits air pressure to build up again. This action again equalizes the air pressure between the two ends of piston 113. Thus, when air is thereafter bled from the opposite side of the four-way valve 96 by bleeder valve 94, an air pressure differential will once again exist on the two sides of piston 113, which causes the piston to return to the position shown in FIGURE 1.
  • This latter valve action (a) releases the air from pressure cylinders 72 and 73 by connecting them to exhaust pipe 115 of the four-way valve 96, causing the cylinders to draw the heater platens 76 and 77 away from the paper stock 10, and (b) connects the carriage return cylinder 97 to the source of compressed air 93 through tube 98, four-way valve 96 and tube 100, causing its push rod 121 to rapidly return the carriage body to its original position, thereby causing tape feed cam 266a to engage roller 275 of cam follower arm 271 and lifting push rod of three-way tape feed valve 90, and the above-described cycle then begins again. It will be apparent from the above discussion that any or all of the air actuation can be replaced by hydraulic operation.
  • the tetrahedron container 401 having the usual transverse seams 402 and 403, has an opening 404 positioned at the uppermost apex 405 of the wall 406 facing upward when the container 401 rests on the wall opposite to the opening bearing wall 406.
  • the opening 404 is sealed by a tape 407 covering the opening 404 and sealed to the portion of the wall 406 surrounding the opening 404.
  • An end portion 408 of the tape is unsealed to the container to provide a pull tab for removing the tape when access to the contents of the container is desired.
  • the unsealed end portion 408 extends outwardly from the walls of the container, as shown in FIGURE 4, to provide a winged effect to the tab, thus making it easy to locate, an important feature when the container is used by young children or persons with poor vision.
  • An optional feature is an uncoated strip 409 along the container wall 406 when the wall is coated with Wax or other material which would 7 tend to interfere with the sealing of the tape 407 to the wall 406.
  • the wall 406 shown in FIGURE 5 is a laminated paper consisting essentially of two layers 501 and 502 of wet strength paper alternated by two layers 503 and 504 of polyethylene, one of which layers 504 forms the interior face of the wall 406.
  • the tape 407 covering the opening 404 is a laminated tape having an outer paper layer 505 and an inner polyethylene layer 506.
  • the seal between the tape 407 and the paper lamina 502 of wall 406 in the container 401 shown in the drawings is achieved by heat sealing which caused some of the polyethylene lamina 506 of the tape 407 to penetrate into the outer portion 507 of the most exteriorly positioned paper lamina 502 of wall 406 so that the polyethylene is infused around the fibers in that portion of the lamina. This can be seen when the tape is pulled from the container. A thin layer of fibers from the paper lamina 502 can be seen imbedded in the polyethylene lamina 506.
  • the heat sealing causes a bead which can be a shallow bead 507 or a deep bead 50-7 to be for-med about the edge of the opening 404.
  • the stock used to make the tetrahedron containers can be for-med of a wide variety of laminated products, e.g., a polyethylene, polypropylene, polyvinylchloride, ployvinyl acetate, nylon, polyester, or other thermoplastic film or layers laminated to paper, fabric, aluminum foil, lead foil or other suitabe packaging material.
  • the tape used to form the seal over the aperture can be constructed wholly of one of the above thermoplastic materials or it can also be a laminated product like the container stock. Generally, a polyethylene-paper laminated product is preferred for both. 7
  • the size and shape of the opening or aperture in the container will depend upon its intended use, i.e., whether or not it is to be used as a pouring opening or as an opening for insertion of a drinking straw. However, a round hole about to is preferred when the container is a half-pint or pint size containing milk or a soft drink.
  • the tape can be colored so as to blend or contrast with the container wall and can bear printing such as advertising or instructions on opening the container.
  • Apparatus for providing external tape seals over a series of pairs of apertures in a moving sheet of material arranged for attachment on a tetrahedron container forming machine also having an attachment which forms pairs of apertures in the moving sheet in timed relationship with the mechanism which forms the containers so as to produce a multiplicity of tetrahedron containers, each having a tape sealed access aperture in a wall thereof, comprising (a) a pair of tape guide means to position ends of a .pair of lengths of heat scalable tape proximate a face of the sheet so that a pair of apertures in the sheet and the end portions of the lengths af tape 8 are in alignment at a moment during the movement of the sheet;
  • air piston actuated tape feed means to intermittently advance the tapes in a direction transverse to the direction of the web movement a metered amount so as to present successive pairs of end portions of the tapes providing the tape seals when the air piston is connected to the supply of actuating air;
  • a pair of electrically heated heaters each having a heated face for heat sealing severed end portions of the lengths of tape to the sheet, reciprocally movable in a direction normal to the direction of the movement of the sheet between a first position away from the sheet more distantly than the terminal portions of the tape guide means, and a second position at which the heaters press the severed end portions to the sheet;
  • (f) means to move the frame from its second to its first position comprising an air actuated piston which, when connected to the supply of actuating air, moves the frame from its second position to its first position at a speed such that the frame reaches its first position before an unsealed aperture reaches that position;
  • (h) means to move the frame from its first to its second position comprising a bed, mounted to the frame, over which the moving sheet passes and which provides a stop for the heaters so that the sheet is clamped between the heaters and the bed in non-slipping arrangement while the heaters are in their second position;
  • a first sensing means which, when the frame reaches its second position, opens a valve, thereby connecting the frame moving air pistonto the supply of actuating air, and closes .a valve, thereby disconnecting the pair of heater bearing air pistons from their supply of actuating air;
  • a second sensing means which, when the frame reaches its first position, opens a valve thereby connecting the tape feeding piston to the supply of actuating air
  • (k) a third sensing means, actuated i-n timed relationship to the means actuating the aperture forming attachment, which opens a valve thereby connecting the pair of air pistons to their supply of actuating air, and closes a valve, thereby discon- 9 necting the frame moving piston from the supply of actuating air.
  • Apparatus for providing tape seals over .a series of apertures in a moving sheet of material comprising tape feed means to intermittently advance a length of heat sealable tape a metered amount, tape cutting means to intermittently sever successive end portions from the tape so as to provide an end portion for each aperture, movable heater means having a heated face for heat sealing an end portion of the tape to the sheet, heater moving means to move the heater means between a first position away from the sheet and a second position where the heated face of the heater means is pressed against the moving sheet, tape guide means to position an end portion of the tape between the heated face of the heater means and the sheet, over the path taken by the apertures, so that the end portion of the tape and the heated face are in alignment when the heater means is in its second position, a frame, on which the heater means is mounted, reciprocally movable between a first position, where the heater means moves from its first to its second position and where the heated face of the heater means and the end portion of the tape are in alignment when the heater means reaches its second
  • Apparatus for providing tape seals over a series of apertures in a moving sheet of material comprising tape feed means to intermittently advance a length of heat sealable tape a metered amount, tape cutting means to intermittently sever successive end portions from the tape so as to provide an end portion for each aperture, movable heater means having a heated face for heat sealing an end portion of the tape to the sheet, heater moving means to move the heater means between a first position away from the sheet and a second position where the heated face of the heater means is pressed against the moving sheet, tape guide means to position an end portion of the tape between the heated face of the heater means and the sheet, over the path taken by the apertures, so that the end portion of the tape and the heated face are in alignment when the heater means is in its second position, a frame, on which the heater means is mounted, reciprocally movable between a first position, where the heater means moves from its first to its second position and where the heated face of the heater means and the end portion of the tape are in alignment when the heater means reaches its second position
  • Apparatus to provide a plurality of tetrahedron shaped liquid impervious containers with sealed openings therein comprising: means for supplying sheet material to said apparatus, said sheet material having a lamina of thermoplastic material substantially liquid impervious, means to advance said sheet material, hole forming means operably associated with said sheet material to periodically form a plurality of pairs of holes in said advancing sheet of material, each of said pairs of holes being spaced from the next adjacent pairs of holes, means to simultaneously place a strip of heat sealable material over each hole of said pair of holes, means to heat seal a portion of each of said heat sealable strips to said sheet material to close each of said holes and to leave a portion of said heat sealable strips unsealed to provide a means to readily pull said heat sealable strips from said sheet material to expose the hole formed therein, means to form said sheet material into a plurality of tetrahedrons and means to sever said sheet material between each of said pairs of holes and between the holes in each pair.
  • Apparatus to provide a plurality of shaped containers with sealed openings therein comprising: means for supplying sheet material to said apparatus, means to advance said sheet material, hole forming means operably associated with said sheet material to periodically form a plurality of pairs of holes in said advancing sheet of material, each of said pairs of holes being spaced from the next adjacent pairs of holes, means to simultaneously place a strip of heat sealable material over each hole of said pair of holes, means to heat seal a portion of each of said heat sealable strips to said sheet material to close each of said holes and to leave a portion of said heat sealable strips unsealed to provide a means to readily pull said heat sealable strips from said sheet material to expose the hole formed therein, means to form said sheet material into a plurality of containers and means to sever said sheet material between each of said pairs of holes and between the holes in each pair. 554,398

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Closing Of Containers (AREA)
  • Package Closures (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Making Paper Articles (AREA)
US26058763 1963-02-25 1963-02-25 Apparatus for producing tetrahedron containers provided with an access aperture Expired - Lifetime US3287878A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE644300D BE644300A (enrdf_load_stackoverflow) 1963-02-25
US26058763 US3287878A (en) 1963-02-25 1963-02-25 Apparatus for producing tetrahedron containers provided with an access aperture
GB677964A GB1030643A (en) 1963-02-25 1964-02-18 Improvements in and relating to apparatus for producing tape seals over apertures insheet material
CH218764A CH437108A (de) 1963-02-25 1964-02-24 Apparat zum Aufschweissen eines Bandes auf eine Reihe von Öffnungen in einer sich bewegenden Materialbahn
BR15707364A BR6457073D0 (pt) 1963-02-25 1964-02-25 Aparelho para proporcionar vedacoes de fita
NL6401783A NL6401783A (enrdf_load_stackoverflow) 1963-02-25 1964-02-25
DK91064A DK109708C (da) 1963-02-25 1964-02-25 Anlæg til fremstilling af fyldte tetraederformede beholdere.

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US26058763 US3287878A (en) 1963-02-25 1963-02-25 Apparatus for producing tetrahedron containers provided with an access aperture

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US3287878A true US3287878A (en) 1966-11-29

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US (1) US3287878A (enrdf_load_stackoverflow)
BE (1) BE644300A (enrdf_load_stackoverflow)
BR (1) BR6457073D0 (enrdf_load_stackoverflow)
CH (1) CH437108A (enrdf_load_stackoverflow)
DK (1) DK109708C (enrdf_load_stackoverflow)
GB (1) GB1030643A (enrdf_load_stackoverflow)
NL (1) NL6401783A (enrdf_load_stackoverflow)

Cited By (15)

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US3546835A (en) * 1969-02-20 1970-12-15 Milliken Industrials Corp Tube forming apparatus and method
US3918237A (en) * 1973-01-18 1975-11-11 Tetra Pak Dev Machine for the manufacture of filled and sealed containers
US4266993A (en) * 1978-05-02 1981-05-12 Tetra Pak International Ab Method for the sealing of a cover strip onto packing containers
US4538396A (en) * 1980-05-22 1985-09-03 Kenji Nakamura Process for producing a re-sealable dispenser-container
US4616470A (en) * 1979-12-03 1986-10-14 Konji Nakamura Method of forming re-sealable dispenser-container
US4723391A (en) * 1984-12-13 1988-02-09 Metal Box Public Limited Company Containers
US4765117A (en) * 1986-08-07 1988-08-23 Kureha Chemical Industry Company Limited Apparatus for welding a strip of tape to film
US5310262A (en) * 1992-06-02 1994-05-10 Bemis Company, Inc. Flexible package with an easy open arrangement
US5746569A (en) * 1996-02-13 1998-05-05 Amplas, Inc. Bag forming machine having adjustable support structure for paired work elements
US5979653A (en) * 1997-12-24 1999-11-09 Cryovac, Inc. Peel mechanism for peelable barrier film for vacuum skin packages and the like
US20030047470A1 (en) * 1997-12-04 2003-03-13 British American Tobacco (Investments) Limited Packaging of smoking articles
US20050211388A1 (en) * 2004-03-29 2005-09-29 Valter Tinivella Station for applying segments of openable/reclosable strip on a plastic film web destined to form bags
US20050223676A1 (en) * 2004-04-08 2005-10-13 Tetra Laval Holdings & Finance S.A. Sealing unit for applying a plastic foil to a substrate material
WO2011038961A1 (de) * 2009-09-30 2011-04-07 Robert Bosch Gmbh Vorrichtung zum handhaben eines folienartigen abdeckstreifens an einer packstoffbahn für einen verpackungsbehälter
US20180362235A1 (en) * 2017-06-20 2018-12-20 Shanghai ZhouTai Light Industry Machinery Manufacturing Co., Ltd Packaging bag, apparatus and method for manufacturing film material of the packaging bag, and method of manufacturing the packaging bag

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JP2688634B2 (ja) * 1988-11-30 1997-12-10 日本テトラパック株式会社 包装機における包装容器の開口部形成装置
DE3914497A1 (de) * 1989-05-02 1990-11-08 Pkl Verpackungssysteme Gmbh Fluessigkeitspackung
EP0513439A1 (de) * 1991-05-18 1992-11-19 Tetra Laval Holdings & Finance SA Vorrichtung zum Füllen und Verschliessen von Fliessmittelpackungen
DE19504062C2 (de) * 1995-02-08 1998-06-04 Rovema Gmbh Beutel mit einer Produktentnahmeöffnung und einer die Produktentnahmeöffnung verschließenden Verschlußfolie und Verfahren zur Herstellung des Beutels
EP1939094A1 (en) * 2006-12-29 2008-07-02 Ipi S.R.L. A method for manufacturing a container for pourable products

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US2418392A (en) * 1943-07-28 1947-04-01 American Cyanamid Co Lifesaving dye marker and the method of making same
FR1122295A (fr) * 1955-02-16 1956-09-04 Bel La Vache Qui Rit Fromage Perfectionnement apporté aux emballages en vue d'en faciliter l'ouverture
US3011293A (en) * 1953-03-24 1961-12-05 Pickering Dorothy Frances Collapsible container
US3022618A (en) * 1959-11-12 1962-02-27 Johnson & Johnson Machine suitable for packaging and like functions
US3193978A (en) * 1962-01-22 1965-07-13 Phillips Petroleum Co Heat sealing thermoplastic packages

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BE554398A (enrdf_load_stackoverflow) *
GB388133A (en) * 1931-11-16 1933-02-23 William Edwin Ellens Improvements in or relating to bags provided with transparent or semi-transparent windows
US2418392A (en) * 1943-07-28 1947-04-01 American Cyanamid Co Lifesaving dye marker and the method of making same
US3011293A (en) * 1953-03-24 1961-12-05 Pickering Dorothy Frances Collapsible container
FR1122295A (fr) * 1955-02-16 1956-09-04 Bel La Vache Qui Rit Fromage Perfectionnement apporté aux emballages en vue d'en faciliter l'ouverture
US3022618A (en) * 1959-11-12 1962-02-27 Johnson & Johnson Machine suitable for packaging and like functions
US3193978A (en) * 1962-01-22 1965-07-13 Phillips Petroleum Co Heat sealing thermoplastic packages

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546835A (en) * 1969-02-20 1970-12-15 Milliken Industrials Corp Tube forming apparatus and method
US3918237A (en) * 1973-01-18 1975-11-11 Tetra Pak Dev Machine for the manufacture of filled and sealed containers
US4266993A (en) * 1978-05-02 1981-05-12 Tetra Pak International Ab Method for the sealing of a cover strip onto packing containers
US4616470A (en) * 1979-12-03 1986-10-14 Konji Nakamura Method of forming re-sealable dispenser-container
US4538396A (en) * 1980-05-22 1985-09-03 Kenji Nakamura Process for producing a re-sealable dispenser-container
US4723391A (en) * 1984-12-13 1988-02-09 Metal Box Public Limited Company Containers
US4765117A (en) * 1986-08-07 1988-08-23 Kureha Chemical Industry Company Limited Apparatus for welding a strip of tape to film
US5310262A (en) * 1992-06-02 1994-05-10 Bemis Company, Inc. Flexible package with an easy open arrangement
US5746569A (en) * 1996-02-13 1998-05-05 Amplas, Inc. Bag forming machine having adjustable support structure for paired work elements
US20030047470A1 (en) * 1997-12-04 2003-03-13 British American Tobacco (Investments) Limited Packaging of smoking articles
US6826889B2 (en) * 1997-12-04 2004-12-07 British American Tobacco Limited Packaging of smoking articles
US5979653A (en) * 1997-12-24 1999-11-09 Cryovac, Inc. Peel mechanism for peelable barrier film for vacuum skin packages and the like
US20050211388A1 (en) * 2004-03-29 2005-09-29 Valter Tinivella Station for applying segments of openable/reclosable strip on a plastic film web destined to form bags
EP1584562A1 (en) * 2004-03-29 2005-10-12 ILAPAK Research & Development S.A. Station for applying segments of openable/reclosable strip on a plastic film web destined to form bags
US7341085B2 (en) 2004-03-29 2008-03-11 Ilapak Research & Development S.A. Station for applying segments of openable/reclosable strip on a plastic film web destined to form bags
US20050223676A1 (en) * 2004-04-08 2005-10-13 Tetra Laval Holdings & Finance S.A. Sealing unit for applying a plastic foil to a substrate material
US7422045B2 (en) 2004-04-08 2008-09-09 Tetra Laval Holdings & Finance S.A. Sealing unit for applying a plastic foil to a substrate material
WO2011038961A1 (de) * 2009-09-30 2011-04-07 Robert Bosch Gmbh Vorrichtung zum handhaben eines folienartigen abdeckstreifens an einer packstoffbahn für einen verpackungsbehälter
US20120159897A1 (en) * 2009-09-30 2012-06-28 Robert Bosch Gmbh Apparatus for handling a film-type cover strip on a packing material web for a packaging container
US20180362235A1 (en) * 2017-06-20 2018-12-20 Shanghai ZhouTai Light Industry Machinery Manufacturing Co., Ltd Packaging bag, apparatus and method for manufacturing film material of the packaging bag, and method of manufacturing the packaging bag
US10640272B2 (en) * 2017-06-20 2020-05-05 Shanghai Zhoutai Light Industry Machinery Manufacturing., Ltd Packaging bag, apparatus and method for manufacturing film material of the packaging bag, and method of manufacturing the packaging bag

Also Published As

Publication number Publication date
NL6401783A (enrdf_load_stackoverflow) 1964-08-26
DK109708C (da) 1968-06-10
CH437108A (de) 1967-05-31
BR6457073D0 (pt) 1973-06-28
BE644300A (enrdf_load_stackoverflow) 1900-01-01
GB1030643A (en) 1966-05-25

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