EP0098904A1 - Verfahren und Vorrichtung zum Herstellen von mehrschichtigen Wellpappschachteln - Google Patents

Verfahren und Vorrichtung zum Herstellen von mehrschichtigen Wellpappschachteln Download PDF

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Publication number
EP0098904A1
EP0098904A1 EP82305481A EP82305481A EP0098904A1 EP 0098904 A1 EP0098904 A1 EP 0098904A1 EP 82305481 A EP82305481 A EP 82305481A EP 82305481 A EP82305481 A EP 82305481A EP 0098904 A1 EP0098904 A1 EP 0098904A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
layer
corner
sheet
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82305481A
Other languages
English (en)
French (fr)
Other versions
EP0098904B1 (de
Inventor
David F. Gillard
Jack Thomas Yelf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MacMillan Bloedel Ltd
Original Assignee
MacMillan Bloedel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/397,990 external-priority patent/US4441948A/en
Application filed by MacMillan Bloedel Ltd filed Critical MacMillan Bloedel Ltd
Publication of EP0098904A1 publication Critical patent/EP0098904A1/de
Application granted granted Critical
Publication of EP0098904B1 publication Critical patent/EP0098904B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C1/00—Making tubes or pipes by feeding at right angles to the winding mandrel centre line

Definitions

  • This invention relates to multi-layered flat walled bulk storage bins or containers made from a collapsible or compressible sheet material such as corrugated board. More particularly,. the invention relates to a method and apparatus for winding single face corrugated board in multiple layers to form a storage container with substantially flat walls.
  • Corrugated board is generally made by gluing a corrugated sheet medium to a flat sheet liner. Any paper, containerboard or linerboard may be used as medium or liner. The gluing occurs at the tips of the corrugations and in this way the corrugated sheet is held firm to the flat sheet and prevented from stretching or flattening.
  • Single face corrugated board has one flat sheet and one corrugated sheet.
  • Double face corrugated board is a corrugated sheet sandwiched between two flat sheets. This material is also referred to as single wall corrugated board.
  • Double wall corrugated board is a five layer composite with sheets arranged alternatively as flat-corrugated- flat-corrugated-flat. Boxes may be made from single wall or double wall corrugated board depending on the strength requirements.
  • corrugated boxes used for bulk storage bins or containers require strong reinforcement and are made from multiple layers of corrugated board. These bins are conventionally made by combining two or more layers of double wall corrugated board. The process of construction involves making the board, scoring the successive layers separately, gluing, folding, and laminating the components together to form the final bin. This sequence of manufacture is time-consuming and labor intensive.
  • the present invention is concerned with a method whereby the walls of the storage bin are constructed in a single operation.
  • a mandrel is prepared having an outside surface which is the desired interior size and shape .of the bin or container.
  • Single face corrugated board is then wound around the mandrel for a sufficient number of layers to give the required strength to the container.
  • glue is applied to the tips of the corrugations on the corrugated side of the layer and then a pressure shoe plate presses against the corrugated board layer to provide a constant pressure on the layer and ensure that it adheres to the previous layer.
  • a flat sheet may be passed around the mandrel before commencing winding the first corrugated board layer.
  • the present invention provides in a method of forming a multi-layered container having a plurality of substantially flat sides with corners between adjacent sides, wherein compressible sheet layers such as corrugated board layers are wound on a forming mandrel, the improvement comprising the steps of:
  • the corrugated board layer is a single face.corrugated sheet, and included is a step of applying glue to tips of corrugations on the single face corrugated sheet.
  • the present invention also provides an apparatus for forming a multi-layered container of corrugated board having a plurality of substantially flat sides with corners between adjacent sides, comprising a forming mandrel having a plurality of substantially flat sides with corners between adjacent sides of the mandrel having means to grip an edge of a corrugated board layer, rotating means to rotate the mandrel and wind the layer around the mandrel, pressure shoe plate located across the width of the mandrel and having movement in a predetermined path, pressure means to push the plate in a predetermined path against the mandrel at a substantially constant pressure so that the layer is squeezed between the plate and the mandrel during rotation of the mandrel, and momentary high pressure means to provide an additional force on the plate to compress the layer at each corner of the mandrel.
  • a single face corrugated board 10 passes under a glue applicator roll 11 which rotates against a doctor roll 12, the trough formed between roll 11 and 12 providing a reservoir for the glue 13.
  • the glue roll 11 places qlue only on the tips of the corrugations.
  • the corrugated board layer 10 then commences to be wrapped around a rotating mandrel 14 and a pressure shoe plate 15, pivoted at point A, is urged towards the mandrel 14 by a first air cylinder 16, pressing the layer 10 onto the preceding layer on the mandrel 14 with a substantially continuous pressure.
  • a flat sheet such as linerboard may be placed around the mandrel.
  • the mandrel 14 has substantially flat surfaces 17 with corners 18 between adjacent sides.
  • a second pair of air cylinders 19 are activated which exert an additional momentary pressure towards the corner 18 through a high pressure contact member 20 which conforms approximately to the shape of the pressure shoe. plate 15, thus flattening each layer 10 at the corner.
  • the contact member 20 is supported on springs so that the contact member touches the underside of the shoe plate 15 just before the air cylinders 19 apply an additional momentary pressure at the corners 18.
  • the first air cylinder 16 ensures that the pressure shoe plate 15 always exerts an even pressure on the layer as it passes over the flat surfaces 17 of the mandrel 14.
  • the pressure of the shoe plate 15 ensures gluing occurring between the layers, and also creates drag on the layer to provide a tension in the layer as it is wound onto the mandrel. This tension ensures that each corner compression is maintained as the mandrel rotates. A momentary high pressure is applied to each layer at every corner of the mandrel by the contact member 20 so that every corner of every layer is individually crushed.
  • the container is removed from the mandrel 14.
  • the container may then be flattened.
  • Each of the crushed corners form a hinge 21, as illustrated in Figure 3, allowing a bend to occur at the hinge so that the separate layers of the container which are glued together do not separate or crinkle at the corners when the container is flattened for storage purposes.
  • corrugated board caps may be attached to the bottom and top side walls of the container by gluing, stapling or other suitable means.
  • FIG. 4 Another embodiment is shown in Figure 4 wherein a single face corrugated sheet 10 passes over a fixed roll 30, followed by a glue applicator roll 11.
  • a backing roll 31 is provided to push the sheet against the glue applicator roll 11-so glue is applied to tips of the corrugations on the sheet.
  • -A constant tension roll 32 connected to a spring loaded constant tension device 33 maintains constant tension on the sheet 10 during the winding.
  • the constant tension roll 32 maintains the sheet 10 in a line such that when the backing roll 31 is released, the sheet 10 does not contact the glue applicator roll 11, and a first layer can be wrapped around the mandrel without having glue applied.
  • the constant tensioning roll 32 allows the sheet 10 to advance at an even speed while the winding of the mandrel, although rotating at an even speed of revolution, need not have an even linear sheet speed. This is particularly true when rectangular containers are formed.
  • the pressure shoe plate 15 is contoured so that a vertical upward pressure on the plate 15 does not cause undue torque to rotate the mandrel 14.
  • the shape of the pressure shoe plate 15 provides a substantially flat or shallow curved top surface 34 and a more sharply curved lip 35 at the front facing the incoming sheet 10, pins 36 are positioned at one corner of the mandrel 14 across the width of the mandrel to hold one edge of the first corrugated sheet layer 10.
  • the pressure shoe plate 15 is supported by a lever arm pivoting at point A.
  • One air cylinder 16 keeps a constant pressure acting as a spring on the plate 15 so it is pushed against the mandrel.
  • a high pressure contact member 20 having a top surface contoured to fit the lower surface of the plate 15 is powered by two air cylinders 19, one on each end of the contact member 20 across the width of the mandrel.
  • a cam system (not shown) attached to the mandrel activates an air valve (not shown) to supply air to cylinders 19 so that the contact member 20 imparts an additional momentary force to plate 15 at the exact moment that a corner 18 of the mandrel 14 is touching the plate 15.
  • the cylinders 19 have an air reservoir supply and an air valve opens the reservoir supply to the cylinders 19. In this embodiment only a small air pressure supply line is required.
  • a pressure of between about 3 and 6 pli between the pressure shoe plate 15 and the mandrel is a sufficient constant pressure to ensure gluing occurs and provide sufficient tension in a single face corrugated sheet.
  • a crushing pressure in the range of 20 to 40 pli provides a sufficient momentary force to crush the corrugated sheet.
  • pressure cylinders 16 and 19 are described as air cylinders it will be obvious to those skilled in the art that hydraulic cylinders may also be used to apply the same force. Furthermore, any other pressurizing means may be used provided that the response is sufficiently rapid and precise that the additional force exerted by the contact member 20 occurs only at the corners of the bin being formed.
  • glue applicator is shown to be a roller in the embodiment described herein it will be obvious to those skilled in the art that any glue applicator, capable of applying glue only to the tips of the corrugations, may be used.
  • a separate supply system may be supplied at the other side of the mandrel to lay a flat sheet around the mandrel before the first layer of corrugated board is wound on.
  • the flat sheet does not have to pass under the pressure shoe plate 15 because there is no need to crush the sheet.

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  • Making Paper Articles (AREA)
EP82305481A 1982-07-14 1982-10-14 Verfahren und Vorrichtung zum Herstellen von mehrschichtigen Wellpappschachteln Expired EP0098904B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US397990 1982-07-14
US06/397,990 US4441948A (en) 1981-10-28 1982-07-14 Method and apparatus for constructing multiple layer corrugated board containers

Publications (2)

Publication Number Publication Date
EP0098904A1 true EP0098904A1 (de) 1984-01-25
EP0098904B1 EP0098904B1 (de) 1987-01-07

Family

ID=23573530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82305481A Expired EP0098904B1 (de) 1982-07-14 1982-10-14 Verfahren und Vorrichtung zum Herstellen von mehrschichtigen Wellpappschachteln

Country Status (3)

Country Link
EP (1) EP0098904B1 (de)
JP (1) JPS5931140A (de)
DE (1) DE3274963D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149889B1 (de) * 1984-01-19 1990-01-31 Macmillan Bloedel Limited Behälter mit geschichtetem Wandungsaufbau
US4932930A (en) * 1988-03-22 1990-06-12 Embal-Systems Method and machine for forming cases with polygonal section made from a sheet material and cases thus obtained

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE541921C2 (en) 2017-03-06 2020-01-07 Packsize Llc A box erecting method and system
US11173685B2 (en) 2017-12-18 2021-11-16 Packsize Llc Method for erecting boxes
SE543046C2 (en) 2018-09-05 2020-09-29 Packsize Llc A box erecting method and system
DE112020000348T5 (de) 2019-01-07 2021-09-16 Packsize Llc Kartonaufrichtungsmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB479613A (en) * 1936-09-08 1938-02-09 F W Hampshire & Co Ltd Improvements in or connected with the manufacture of cartons and other containers
US2677489A (en) * 1949-08-09 1954-05-04 American Trust Company Container, apparatus and method for making the same
AT199981B (de) * 1953-12-04 1958-10-10 Alois Ederer Verfahren zur Herstellung von Schachteln, insbesondere Faltschachteln, und Vorrichtung zur Durchführung des Verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB479613A (en) * 1936-09-08 1938-02-09 F W Hampshire & Co Ltd Improvements in or connected with the manufacture of cartons and other containers
US2677489A (en) * 1949-08-09 1954-05-04 American Trust Company Container, apparatus and method for making the same
AT199981B (de) * 1953-12-04 1958-10-10 Alois Ederer Verfahren zur Herstellung von Schachteln, insbesondere Faltschachteln, und Vorrichtung zur Durchführung des Verfahrens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149889B1 (de) * 1984-01-19 1990-01-31 Macmillan Bloedel Limited Behälter mit geschichtetem Wandungsaufbau
US4932930A (en) * 1988-03-22 1990-06-12 Embal-Systems Method and machine for forming cases with polygonal section made from a sheet material and cases thus obtained

Also Published As

Publication number Publication date
DE3274963D1 (en) 1987-02-12
EP0098904B1 (de) 1987-01-07
JPS5931140A (ja) 1984-02-20
JPS619141B2 (de) 1986-03-20

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