US3838632A - Method and apparatus for making corrugated containers of longitudinally corrugated strips on continuous basis - Google Patents

Method and apparatus for making corrugated containers of longitudinally corrugated strips on continuous basis Download PDF

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US3838632A
US3838632A US00280210A US28021072A US3838632A US 3838632 A US3838632 A US 3838632A US 00280210 A US00280210 A US 00280210A US 28021072 A US28021072 A US 28021072A US 3838632 A US3838632 A US 3838632A
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ply
corrugated
core
mandrel
strip
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H Miyake
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Kk Osaka ja
OSAKA KK
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OSAKA KK
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • 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
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/22—Making webs in which the channel of each corrugation is longitudinal with the web feed
    • B31F1/225—Making webs in which the channel of each corrugation is longitudinal with the web feed combined with uniting the corrugated web to flat webs; Making corrugated-web structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/62—Boxes, cartons, cases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for

Definitions

  • the present invention relates to a method and apparatus for making corrugated cardboard container blanks of longitudinally corrugated cardboard based on a new idea of producing stitchless corrugated container blanks on a continuous basis.
  • An elongated strip of corrugated cardboard is formed, the corrugations of the core ply of which extend longitudinally.
  • the face plies are laterally ofi'set in opposite directions so as to form stepped edges at both sides of the strip.
  • Transverse and longitudinal folds or creases and slots are formed in the strip and the strip is formed into a tube by joining the stepped edges on a mandrel which is gradually flattened, and individual stitchless corrugated container blanks can then be cut off the flattened tube.
  • This invention relates to a method of making corrugated container blanks, more particularly to an integrated method of making so-called longitudinally corrugated strips strips in which the flutes of the core ply extend in the longitudinal direction of the strip and making flat folded corrugated container blanks therefrom and a manufacturing apparatus for the above integrated method.
  • corrugated container blanks In the process of making corrugated container blanks, it is necessary to install a singlefunction machine for each process, i.e., a slitter, a slotter, a gluer, a stitcher, a die cutter, and so on, and corrugated cardboard has to be carried to each machine for processing. This not only requires a large factory area but also exployment of many workers.
  • so-called longitudinally corrugated cardboard has the flutes in the core ply parallel with the direction of the paper fiber. This'involves no spoiling of the paper fiber and makes it possible to utilize the strength in the longitudinal direction which is an essential object of corrugated cardboard, thereby improving the top-to-bottom compressive strength of corrugated containers to a great extent. Moreover, if the flutes of the core ply of the corrugated cardboard are kept in the longitudinal direction, ranging from the first corrugating process up to the last container blank making process, it is possible to mass-produce corrugated container blanks by a continuous process using simple apparatuses.
  • a primary object of the present invention is to provide a method and an apparatus for making flat folded stitchless corrugated container blanks on a continuous production basis, by making an elongated strip of longitudinally corrugated cardboard, making the strip into a tubular body, and further making the tubular body into stitchless corrugated container blanks.
  • the present invention uses this new method.
  • Another object of the present invention is to produce corrugated container blanks having a joint which presents a good appearance in which both face plies and a corrugated core ply overlap one another properly and v are well joined.
  • a further object of the present invention is to provide an economical method in which face plies and a core ply to be corrugated are cut in a desired width at the start of production and are immediately transferred to the edge joining process, thereby eliminating the loss of material.
  • FIG. 1, parts A-H and El-E4 are diagrams showing processing procedures at each stage of the process of making a container blank, part (A) being a transverse cross-sectional view of a longitudinally corrugated cardboard, parts B, C, D, E, F, G and H being partly sectional perspective views respectively, and E, through B, being cross sectional views illustrating a corrugated cardboard on lines A-A, B-B, H-I-I, E,E E.,E respectively.
  • FIG. 2 is a perspective view showing a core ply of longitudinally corrugated cardboard at the position encircled with chain line in FIG. 4.
  • FIG. 3 is a plan view of an apparatus for making corrugated container blanks continuously, according to the present invention.
  • FIG. 4 is a side elevation view of the apparatus shown in FIG. 3.
  • FIG. 5 is a side elevation view of an apparatus for shaping corrugated strips according to one embodiment of the present invention.
  • FIG. 6 is a plan view of the apparatus shown in FIG.
  • FIG. 7 is a front elevation of corrugation forming rollers of the apparatus of FIG. 5.
  • FIG; 8 is a sectional view taken along line M-M in FIG. 5.
  • FIG. 9 is a partial sectional view on an enlarged scale taken along line J--.[ in FIG. 5.
  • FIG. 10 is a partial sectional view on an enlarged scale taken along line K-K in FIG. 5.
  • FIG. 11 is a sectional view of a part of FIG. 8, on an enlarged scale.
  • FIG. 12 is an elevation view,-partly in section and on an enlarged scale, showing a part of the lower ball supporting rod.
  • FIG. 13 is a plan view of FIG. 12.
  • FIG. 14 is a sectional view taken along line NN of FIG. 12.
  • FIG. 15 is a sectional view taken along line 0-0 of FIG. 12.
  • FIG. 16 is a front elevation view, partly in section, of the device for making transverse folds or creases.
  • FIG. 17 is a sectional side view of a main part of the device for making transverse folds or creases.
  • FIG. 18 is a front elevation view, partly in section, of
  • FIG. l9- is a front elevation view, partly in section, of the device to make slot.
  • FIG. 20 is a sectional side viewof a main part of the device to make slot.
  • FIG. 21 is a transverse sectional elevation of a main part of the device to apply adhesive.
  • FIG. 22 is a transverse sectional view, on an enlarged scale, showing the edges of the longitudinally corrugated cardboard.
  • FIG. 23 is a broken sectional view of the heating device provided in the mandrel.
  • FIG. 24 is a sectional side view of the corrugated board feeding device provided outside the rectangular mandrel.
  • FIG. 25 is a transverse sectional view of the feeding device shown in FIG. 24.
  • FIG. 27 is a sectional side elevation view of the severing device.
  • FIG. 28 is a transverse sectional .view of a corrugated cardboard tubular body illustrating overlapping of edges.
  • FIG. 29 is a sectional view, on an enlarged scale, of the part of the body encircled with chain line in FIG. 28.
  • FIG. 30 is a sectional view of a corrugated cardboard tubular body illustrating overlapping of edges according to another embodiment of the present invention.
  • FIG. 31 is a sectional view, on an enlarged scale, of the part of the body encircled with chain line in FIG. 30.
  • FIGS. 32a and b are transversely sectional perspective views, respectively, of a longitudinally corrugated cardboard.
  • FIG. 33 parts PP are transverse sectional diagrams taken on corresponding section lines in FIG. 34 to illustrate folding of a corrugated cardboard along the sides of the mandrel.
  • FIG. 34 is a side elevation view of the device for making longitudinally corrugated cardobard.
  • FIG. 35 is a transverse elevation of a main part of the device to apply adhesive.
  • FIGS. 36a and b are perspective diagrams for showing a comparison of corrugated cardboard manufactured process by the conventional method and the method according to the present invention.
  • FIG. 1 shows a corrugated coardboard 4 comprising face plies 1 and 2 which are fed in parallel with each other from mill roll stands and between which a corrugated core ply 3,'the corrugations of which extend in the direction of the length of the strip as it moves through the machine is positioned.
  • the face plies l and 2, and the corrugated core ply 3 have the same width. However, the face plies l and 2 are laterally offset in-opposite directions in such a manner that stepped edges and 7b are formed.
  • the corrugated cardboard 4 is fed on a supporting plate 16 in the direction of the arrow I shown in FIG. 1 B,transverse folds or creases 18 are applied by a transverse creasing device 46 shown inFlG. 3.
  • Longitudinal folds or creases 19 are applied next by a longitudinal creasing device 56 as shown in FIG. 3 C.
  • Slots 20 are made on said longitudinal folds or creases 19 at regular intervals of length, as shown in heavy lines in FIG. 3 D, by a slotting device 59.
  • the corrugated cardboard strip 4 treated according to the above processes is fed onto a mandrel 17 comprising a tubular part 17a to form a tube having a rectangular section, an intermediate part 17b which follows said tubular part and changes gradually into a flat form and a flat part 17c.
  • a mandrel 17 comprising a tubular part 17a to form a tube having a rectangular section, an intermediate part 17b which follows said tubular part and changes gradually into a flat form and a flat part 17c.
  • the cardboard is bent downwardly at longitudinal folds or creases 19b and 190 as shown in FIG. 1 (B
  • a corrugated tube 5 as shown in FIG. 1 (E) is formed by the cardboard being bent at the longitudinal folds or creases 19a and 19d to conform to each face of the mandrel 17 'as shown in FIG. 1 E E and causing the edge 7b to overlap the edge 7a for forming a joint 7c.
  • Said tube 5 is, as shown in FIG. 1 F as it passes along the intermediate part 17b of said mandrel, gradually flattened and after passing over the flat portion 170 of the mandrel, becomes a flat folded tube 6, as shown in FIG. 1 G, which is then severed by a severing device on a severing line 139 at the middle of the length of each slot 20, whereby individual flat folded container blanks are obtained.
  • the plain face plies 1 and 2 are drawn out from mill roll stands 8 and 9 respectively, and the face ply 1 then is passed through an adhesive applicator roll 11a, 21 support roll 11 and guiding rolls 12a and 12b, and the face ply is passed through an adhesive applicator roll 13a, a support roll 13b and guiding rolls 12a and 12b.
  • the corrugated core ply 3 the corrugations of which are made by a corrugation forming device 23 to be described later, is fed by pulling rollers 36 and 37 in the direction of passage of the elongated cardboard strip and then is passed through adhesive applicator rollers 14a and 14c, support rolls 14b and 14d and guiding rolls 12a and 12b.
  • the three plies passed through said guiding rolls are combined on a support plate 16 with the face plies l and 2 offset in opposite directions relative to the core ply 3 so that stepped parts are formed at the edges of strip 4, thereby forming an elongated strip of longitudinally corrugated cardboard 4.
  • Numerals a, 15b and 150 designate edge detectors for the face plies and the corrugated strip.
  • Signals detected by said edge detectors 15a, 15b and 15c are transmitted to a support mechanism for said supplies of face plies l and 2 and the corrugated core ply 3 (not shown in the drawings), comprising an automatic regulating device which adjusts said support mechanism at right angles to the direction of passage of the strip and for accurately controlling the size of the stepped edges 7a and 7b when said face plies 1 and 2 and said corrugated core ply are combined.
  • Numeral 21 in FIG. 3 denotes a steam supply device which, when a flat core ply drawn out from a reel 10, passes therethrough, sprays steam thereon from a nozzle 22 (FIG. 5) so as to humidify said core ply to a constant degree of moisture content.
  • Numeral 23 denotes a core ply guide means (FIG. 5) which passes said core ply L between an upper ball supporting rod group and a lower ball supporting rod group so that the pitch of the flutes made by said groups becomes gradually smaller.
  • Numeral 24 denotes upper ball supporting rods which are arranged regularly in a plane and at regular intervals, the space between adjacent rods being made gradually narrower in the direction of passage of the strip (arrow 1).
  • Numeral 25 denotes lower ball supporting rods, each of which is arranged below a corresponding upper ball supporting rod.
  • the upper surface of said upper ball supporting rods 24 is secured to fixing means 26a, 26b, 26f and the lower surface of said lower ball supporting rods 25 is secured to fixing means 27a, 27b, 27f and said two fixing means are supported by legs 28a, 28b and 280.
  • a ball 29 (FIG. 9) made of an abrasion resistant material, such as steel or nylon, is inserted in a conical-shaped groove 30 which is provided at the end of each supporting rod 24 and 25, the upper half of said ball 29 being held by a metallic cover piece 31 fixed to the supporting rods 24 and 25 so as to prevent said ball from slipping off.
  • the fixing means 26a, 26b, 26f securing the upper ball supporting rods 25 are provided with a fixing piece 32 at both ends thereof which is secured to the side 33 of said fixing means 27a, 27b, 27f by a bolt 34.
  • Numeral 35 denotes a corrugation forming roller which sets corrugations by heating while pulling the core ply L.
  • Male and female pulling rolls 36 and 37 respectively have on the surface thereof flute-shaped grooves meshing with each other and steam is supplied by a pipe 38 thereto and condensate is exhausted by a drain pipe 39 secured to a drain pipe inside of said roll.
  • Said pulling rolls 36 and 37 rotate while being supported by bearings 40 and 41 and are connected, by a rotating connector 42, to said fixed pipe 38 and the drain pipe 39.
  • Numerals 43 and 44 denote gears meshing with each other and secured to the shafts of said pulling rolls 36 and 37 and numeral 45 denotes a driving gear.
  • the core ply L passed through the steam supply device 21 is inserted between balls 29 carried by the upper supporting rods 24 and the lower supporting rods 25 as illustrated in FIG. 9 showing a section at the position J-J of FIG. 6 so as to be corrugated.
  • the space between the supporting rods 24 and 25 is made narrower in the direction of movement of.the ply so that as the core ply L proceeds forward, the pitch P of the flutes becomes gradually smaller, the pitch P of the flutes at the foremost position M-M being as shown in FIG. 11.
  • the corrugated core ply L having such pitch of the flutes is pulled as it is sandwiched between grooves of the corrugation forming roller 35 and the corrugations are set by the heated pulling rolls 36 and 37 to such a degree that they are free from deformation.
  • the core ply L is continuously fed from the corrugation forming roller 35 in the form a longitudinally corrugated ply 3 as shown in FIG. 3.
  • Numeral 16 denotes a flat supporting plate the terminal end (left-hand of FIG. 3) of which comes close to the mandrel 17, and which is held by legs 138.
  • This plate supports the corrugated cardboard strip 4 horizontally thereon and passes said cardboard 4 through the processes of transverse creasing, longitudinal creasing, slotting and the like.
  • a creasing roll 48 of a device 46 for making transverse folds or creases (FIG. 16 and FIG. 17) is supported by a shaft 50 by means of a spring 49 provided at both ends of said roll and is attached rotatably to a bracket which is fixed to a support.
  • a gear 51 is provided at one end of said shaft 50.
  • power from a motor 53 is transmitted to the creasing rolls 48 by means of a reduction gear 54.
  • a blade 55 Provided on the surface of the creasing roll is a blade 55 which compresses the corrugated cardboard 4 between itself and the supporting plate 16 during the rotation of the creasing roll, thereby forming transverse folds or creases 18.
  • the size of the finished goods or folded container blanks 150 can be changed as desired.
  • several-step change gears are preferably provided in the reduction gear 54.
  • the transverse creasing device is driven by a separate motor in the example of FIG.
  • the transverse creasing as described later, has a close relation with the slotting process and the severing process so that if a transverse creasing device, a slotting device and severing device are driven synchronously, irregularities which might occur in each process can be avoided.
  • a device 56 (FIG. 18) is provided to make longitudinal folds or creases continuously in the corrugated board 4 for enabling it to be formed into a tube by lapping the corrugated board 4 about the mandrel 17.
  • a shaft 58 to which four disks 57 having sharp circumferential edge are fastened at regular intervals can be supported rotatably in bearings at both ends thereof and be connected to a motor for rotation. The interval between disks 57 can be changed, depending on the desired container shape.
  • a device 59 (FIG. 19, FIG. 20) is provided to make slots intermittently in longitudinally creased parts of the corrugated board and comprises four disks 62 on a shaft 61 supported rotatably on a bracket 60, and rotatable blades 63 secured to said disks. Openings 65 are provided in a base 64 through which grooved slotting rolls 66 rotatably fixed to a shaft 67 are exposed opposite the respective rotating blades 63.
  • a gear 68 is provided at one end of the shaft 61, to which gear power is transmitted from a motor 70 through a reduction gear 71 and a gear 72.
  • a device 73 is, as shown in FIG. 21, provided to apply adhesive to both stepped edge portions 7a and 7b of the corrugated board 4.
  • a stepped adhesive applicator roll 74 which conforms to the stepped form of the edge portions 7a and 7b of the corrugated cardboard 4, is arranged opposite a supporting roll 75 and both rolls are driven by a suitable power means.
  • the corrugated cardboard 4 is fed between these rolls so that adhesive is continuously applied thereto by the adhesive applicator 74.
  • an adhesive tank, a doctor roll, a cleaning roll (none of which are shown) and the like are associated with the rolls so that pasting is effected uniformly.
  • the detailed explanation of this device is omitted here since it is conventional.
  • the mandrel 17 has the corrugated cardboard 4 folded around the outer surface thereof to form a tube.
  • the cross-section of the mandrel 17 supported and fixed by a leg 76 as shown in FIG. 3 is rectangular at lines E,-E,, E E E-E, is elliptical on line FF and substantially around line GG.
  • a pressing roller 83 which presses the overlapped edge portions 7a and 7b of the corrugated cardboard 4 together thereby forming a corrugated tube 5.
  • heat is applied to dry the overlapped edges of tube 5.
  • a heating means an electrothermic or the steam type heater is most preferable, and steam heating apparatus as shown by 84 in FIG. 23 is disclosed for the embodiment of the present invention.
  • a steam supplying pipe 85 which has a helical portion 88 in the mandrel and has a drain pipe 89, is connected at one end 86 to a steam generator (not shown in the drawings).
  • a device 91 (FIG. 24, FIG. 25) is provided to feed the corrugated cardboard 4 and the tube continuously and is provided near the pressing roller 83at the portion where the corrugated cardboard 4 is finished into a tube at the end of the mandrel.
  • the device has four driving elements, one on each face of the mandrel, and each comprising a driving roller 95 rotatably mounted on a supporting shaft 94 which is fixed to a support 93 and a driven roller 97 is rotatably mounted on a supporting shaft 96, and an magnetic endless belt 98 extending between said driving roller and said driven roller and stretched outwardly by means of a tension roller 100.
  • the tension of the endless belt 98 is adjusted by an adjusting bolt 101 which is connected to said shaft 96.
  • the driving roller 95 of each driving element is connected to the other driving rollers by means of a bevel gear 102 and bevel gear 109 connects one bevel gear 102 to a motor 103 for driving the driving rollers simultaneously.
  • a feeding device 120 is provided at the flat portion of the mandrel 17 shown in FIG. 3 and FIG. 4 on the line 6-6.
  • a severing device 130 shown in FIG. 27 is provided to sever from the folded corrugated tube 6 cardboard container blanks of uniform length.
  • Fixed to a stud 131 are two guiding plates 132 on each of which a severing knife 133 is slidably mounted within a groove 134.
  • the severing knives are constantly urged to move outwardly by springs 135a around armatures of solenoid l35, the armatures being connected to arms projecting fromthe ends of the severing knives 133.
  • the severing knives 133 Upon energization of said solenoid, the severing knives 133 are drawn toward each other and the blade 136 thereof cooperate to sever from the folded tube 6 flat folded cardboard blanks of uniform length, which are fed to a stacking device 140.
  • a stacking device 140 (FIG. 3, FIG. 4) stacks and sends the folded cardboard blanks to be packed.
  • the edges of the corrugated core ply 3 and'the face plies 1 and 2 superposed thereon to form the stepped edges are each overlapped.
  • the edges of the corrugated strip 3 are overlapped in such a fashion that a convex portion of one flute is overlapped by the convex portion of another flute and a concave portion of one by a concave portion of another.
  • adhesive is applied to the edge portions 7a and 7b as shown in FIG. 20.
  • the face plies are overlapped but the corrugated ply 3 has the edges abutted.
  • corrugated tube 5 from one sheet of double faced corrugated cardboard 4 has been described hereinbefore but a similar corrugated tube can be made from two strips of corrugated cardboard, each of which is bent and then secured to the other.
  • This embodiment is shown in FIG. 32 FIG. 35, especially the different features from those in the first described embodiment.
  • two sets of the devices up to the guiding rollers 12a and 12b on the mandrel shown in FIG. 3 and FIG. 4, are provided for forming corrugated cardboard strips 141 and 1142 which are one half the width of the corrugated cardboard 4 by superposing face plies l and 2 and a longitudinally corrugated core ply 3.
  • the corrugated strips 141 and 142 are fed to an apparatus for making flat folded blanks for box-shaped containers which comprises a series of devices, i.e., a transverse creasing device, a longitudinal creasing device, a slotting device, a feeding device, a folding and overlapping device and a severing device.
  • a series of devices i.e., a transverse creasing device, a longitudinal creasing device, a slotting device, a feeding device, a folding and overlapping device and a severing device.
  • each corrugated strip 141 and 142 are folded and overlapped at the edges in the steps shown in parts P P P P of FIG. 33.
  • the central portion of each corrugated strip 141 and 142 between the longitudinal creases 19b and -19c is placed in contact with the respective upper and lower faces of the mandrel 17 and leveling rollers 170, 171, 172 and 173 provided along the mandrel 17, fold portions 143 and 146 of the corrugated strips 141 into close contact with the mandrel l7, and then fold portions 144 and 145 against the mandrel.
  • a corrugated tube 147 is formed with the edge 143 of the corrugated strip 141 being overlapped by the edge 145 of the corrugated strip 142 and the edge 146 being overlapped by the edge 144.
  • two edge overlapping portions 148a and 148b are formed.
  • the thus formed tube 147 is pressed by pressing rollers 174, 175, 176a, 176b, 177, 178a and 178 b, is fed forward and is heated and dried by a heater in the mandrel, is .gradually flattened, and is severed in the desired lengths by a severing device, whereby folded corrugated blanks for boxshape containers are formed and said blanks are fed to a stacking device.
  • box-shape folded cardboard containers 200 are made continuously from one corrugated board.
  • numeral 34 denote upper and lower support plates respectively, numerals 162 and 163 denote guiding rollers, numeral 164 denotes a transverse creasing device, numeral 166 is a slotting device, numeral 167 is an adhesive applying device, numerals 168a and 168b are support rollers, and parts P P P and P of FIG. 33 are sections on.
  • a dryer using infrared rays or heated air can be provided at the position 300 in FIG. 4, so as to compensate for loss of heat instantly and thereby minimize the decrease in temperature.
  • the present invention is, as above described, a method and apparatus for manufacturing folded corrugated cardboard which undergoes processes which form it into a tube, which is made gradually flat and severed into individual containers, whereby containers of a certain size which are tough and fit for packing oranges, eggs or vegetables can be manufactured efficiently on a continuous processing and mass production basis.
  • the apparatus can be made compact in size and in one unit, since continuous operation is possible.
  • Corrugated box-shape containers having a large compressive strength can be obtained.
  • Corrugated containers having excellent joint strength comprising face plies and a corrugated core ply which are superposed on one another and are overlapped completely at each edge thereof.
  • the device for feeding can bemade simple, taking advantage of the fact that corrugations are formed in the direction of passage of the strip through the machine so that the strip is strong in said direction when it is fed on the support plate and on the mandrel.
  • a method of continuously producing flat folded corrugated container blanks comprising the steps of:
  • a method as claimed in claim 1 further comprising the steps of creasing, scoring and slotting said flattened tube for forming carton blanks from the said lengths.
  • a method as claimed in claim 1 in which the step of adhering the edges of the offset plies and the edges of the core plies comprises adhering the inner surface of the edge of each face ply which projects beyond the core ply to the outer surface of the edge of said face ply beyond which the core ply extends.
  • An apparatus for producing flat folded corrugated container blanks comprising:
  • a corrugating means for receiving a strip of flat core ply stock and forming in it corrugations extending longitudinally of the strip to form a strip of core P y; a support plate for receiving the strip of core ply;

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US00280210A 1971-08-17 1972-08-14 Method and apparatus for making corrugated containers of longitudinally corrugated strips on continuous basis Expired - Lifetime US3838632A (en)

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JP46062721A JPS5221434B2 (it) 1971-08-17 1971-08-17

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JP (1) JPS5221434B2 (it)
CA (1) CA970193A (it)
DE (1) DE2240505C3 (it)
FR (1) FR2150103A5 (it)
GB (1) GB1410071A (it)

Cited By (15)

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US3919925A (en) * 1973-04-10 1975-11-18 Akio Hayama Process and equipment for continuous manufacture of corrugated cardboard box
US4469542A (en) * 1982-09-07 1984-09-04 Tetra Pak Developpement Method of making a piece of tube from a flat web of flexible material, and apparatus for carrying out the method
US4500381A (en) * 1983-04-20 1985-02-19 Longview Fibre Company Method and apparatus for making multiple ply paperboard
US4623072A (en) * 1985-04-18 1986-11-18 Macmillan Bloedel Limited Corrugated container with foldable flaps
US6042250A (en) * 1998-08-03 2000-03-28 Stragnola; Steven Vincent Horticulture lighting system for providing uniform illumination from an elevated height
US20040206657A1 (en) * 2003-04-15 2004-10-21 Akira Yokawa Packing structure and packing member of corrugated cardboard
US20080060747A1 (en) * 2005-05-12 2008-03-13 Dyne Technology Co., Ltd. Paper tube and method of making the same
WO2010009006A2 (en) 2008-07-12 2010-01-21 Jarl Jensen Retail boxes and method of manufacturing retail boxes
US7678036B1 (en) * 2007-07-10 2010-03-16 Eleftherios Malitas Ripple bottom pizza box and its associated method of construction
US20140231568A1 (en) * 2013-02-21 2014-08-21 The Procter & Gamble Company Fibrous cores
US9266640B2 (en) 2008-07-12 2016-02-23 Jarl Jensen Retail boxes and method of manufacturing retail boxes
US9440771B2 (en) 2014-11-07 2016-09-13 Company Black Llc Support assembly and components
US9440772B2 (en) 2015-02-04 2016-09-13 Company Black Llc Support unit
US9739397B2 (en) 2014-11-07 2017-08-22 Company Black Llc Support assembly and components
US20220219421A1 (en) * 2021-01-13 2022-07-14 Westrock Shared Services, Llc Single face tube die-cut and sheet process

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Publication number Priority date Publication date Assignee Title
JPS5184377A (en) * 1975-01-18 1976-07-23 Kyoto Seisakusho Matsuchibakono sotobakoseizoki
JPS5342986A (en) * 1976-09-28 1978-04-18 Nippon Flute Co Ltd Method of forming board material for corrugated cardboard product
SE404326B (sv) * 1977-02-28 1978-10-02 Munksjoe Ab Forfarande for framstellning av cellfackverk och anleggning for genomforande av forfarandet
SE425057B (sv) * 1981-01-23 1982-08-30 Lars Johan Teodor Billing Verktyg for framstellning av nitspik eller expanderspik
DE3117095C2 (de) * 1981-04-30 1983-07-21 Europa Carton Ag, 2000 Hamburg Verfahren zur Herstellung von Teilen beidseitig gedeckter Wellpappe sowie preß- oder prägeverformbares Wellpappe-Halbzeug zur Erzeugung formstabiler Fertigproduktteile
DE4223978A1 (de) * 1992-07-21 1994-01-27 Flexipack Werk Wunderlich Gmbh Verfahren zur Herstellung von Hohlprofilen für Verpackungszwecke, nach dem Verfahren hergestellte Erzeugnisse sowie Vorrichtungen zur Durchführung des Verfahrens
JP4800400B2 (ja) * 2009-02-10 2011-10-26 ▲高▼塩技研工業株式会社 シート状ワークへの凹凸条形成装置および凹凸条形成方法

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US2893436A (en) * 1954-10-12 1959-07-07 Ephraim H Roden Horizontal corrugated paper tube and method of making the same
US2934466A (en) * 1953-11-17 1960-04-26 F F A S P A Fabbriche Fiammife Method and joint for forming tubes from corrugated material
US3137217A (en) * 1963-02-12 1964-06-16 Charles I Elliott Corp Method of making corrugated cartons and blanks therefor
US3444792A (en) * 1964-08-20 1969-05-20 Holstein & Kappert Maschf Method for the production of tubes
US3732790A (en) * 1969-12-25 1973-05-15 Nisso Kk Corrugated container and method and apparatus for manufacturing the same

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US2934466A (en) * 1953-11-17 1960-04-26 F F A S P A Fabbriche Fiammife Method and joint for forming tubes from corrugated material
US2893436A (en) * 1954-10-12 1959-07-07 Ephraim H Roden Horizontal corrugated paper tube and method of making the same
US3137217A (en) * 1963-02-12 1964-06-16 Charles I Elliott Corp Method of making corrugated cartons and blanks therefor
US3444792A (en) * 1964-08-20 1969-05-20 Holstein & Kappert Maschf Method for the production of tubes
US3732790A (en) * 1969-12-25 1973-05-15 Nisso Kk Corrugated container and method and apparatus for manufacturing the same

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919925A (en) * 1973-04-10 1975-11-18 Akio Hayama Process and equipment for continuous manufacture of corrugated cardboard box
US4469542A (en) * 1982-09-07 1984-09-04 Tetra Pak Developpement Method of making a piece of tube from a flat web of flexible material, and apparatus for carrying out the method
US4500381A (en) * 1983-04-20 1985-02-19 Longview Fibre Company Method and apparatus for making multiple ply paperboard
US4623072A (en) * 1985-04-18 1986-11-18 Macmillan Bloedel Limited Corrugated container with foldable flaps
US6042250A (en) * 1998-08-03 2000-03-28 Stragnola; Steven Vincent Horticulture lighting system for providing uniform illumination from an elevated height
US20040206657A1 (en) * 2003-04-15 2004-10-21 Akira Yokawa Packing structure and packing member of corrugated cardboard
US7296680B2 (en) * 2003-04-15 2007-11-20 Funai Electric Co., Ltd. Packing structure and packing member of corrugated cardboard
US20080060747A1 (en) * 2005-05-12 2008-03-13 Dyne Technology Co., Ltd. Paper tube and method of making the same
US8337375B2 (en) 2005-05-12 2012-12-25 Dyne Technology Co., Ltd. Apparatus and method for making tube with polygonal cross-section
US7678036B1 (en) * 2007-07-10 2010-03-16 Eleftherios Malitas Ripple bottom pizza box and its associated method of construction
EP2334566A2 (en) * 2008-07-12 2011-06-22 Jarl Jensen Retail boxes and method of manufacturing retail boxes
WO2010009006A2 (en) 2008-07-12 2010-01-21 Jarl Jensen Retail boxes and method of manufacturing retail boxes
EP2334566A4 (en) * 2008-07-12 2013-04-17 Jarl Jensen PACKAGING BOXES AND METHOD FOR PRODUCING PACKAGING BOXES
US9266640B2 (en) 2008-07-12 2016-02-23 Jarl Jensen Retail boxes and method of manufacturing retail boxes
US20140231568A1 (en) * 2013-02-21 2014-08-21 The Procter & Gamble Company Fibrous cores
US9561929B2 (en) * 2013-02-21 2017-02-07 The Procter & Gamble Company Fibrous cores
US9440771B2 (en) 2014-11-07 2016-09-13 Company Black Llc Support assembly and components
US9739397B2 (en) 2014-11-07 2017-08-22 Company Black Llc Support assembly and components
US9440772B2 (en) 2015-02-04 2016-09-13 Company Black Llc Support unit
US20220219421A1 (en) * 2021-01-13 2022-07-14 Westrock Shared Services, Llc Single face tube die-cut and sheet process

Also Published As

Publication number Publication date
DE2240505B2 (de) 1978-05-03
DE2240505A1 (de) 1973-02-22
JPS4829596A (it) 1973-04-19
FR2150103A5 (it) 1973-03-30
JPS5221434B2 (it) 1977-06-10
DE2240505C3 (de) 1978-12-21
CA970193A (en) 1975-07-01
GB1410071A (en) 1975-10-15

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