EP1165310B2 - Faltwabe aus wellpappe, verfahren und vorrichtung zu deren herstellung - Google Patents

Faltwabe aus wellpappe, verfahren und vorrichtung zu deren herstellung Download PDF

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Publication number
EP1165310B2
EP1165310B2 EP00920578A EP00920578A EP1165310B2 EP 1165310 B2 EP1165310 B2 EP 1165310B2 EP 00920578 A EP00920578 A EP 00920578A EP 00920578 A EP00920578 A EP 00920578A EP 1165310 B2 EP1165310 B2 EP 1165310B2
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EP
European Patent Office
Prior art keywords
corrugated core
corrugated
strips
cover layer
strip
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EP00920578A
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German (de)
English (en)
French (fr)
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EP1165310A1 (de
EP1165310B1 (de
Inventor
Jochen Pflug
Ignace Verpoest
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Katholieke Universiteit Leuven
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Katholieke Universiteit Leuven
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    • 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
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D3/00—Making articles of cellular structure, e.g. insulating board
    • B31D3/005—Making cellular structures from corrugated webs or sheets
    • 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
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • 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
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1005—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by inward collapsing of portion of hollow body
    • 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
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    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1015—Folding
    • 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
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    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1016—Transverse corrugating
    • 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
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    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1016—Transverse corrugating
    • Y10T156/102—Transverse corrugating with deformation or cutting of corrugated lamina
    • 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
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    • Y10T156/1025—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina to form undulated to corrugated sheet and securing to base with parts of shaped areas out of contact
    • 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
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    • Y10T156/1026—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina with slitting or removal of material at reshaping area prior to reshaping
    • 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
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    • Y10T156/1051—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by folding
    • 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
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    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • 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
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    • Y10T156/1082—Partial cutting bonded sandwich [e.g., grooving or incising]
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    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/234—Sheet including cover or casing including elements cooperating to form cells
    • Y10T428/236—Honeycomb type cells extend perpendicularly to nonthickness layer
    • 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
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    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like
    • 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
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    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24562—Interlaminar spaces
    • 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
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    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
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    • Y10T428/2457—Parallel ribs and/or grooves
    • 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
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    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24744—Longitudinal or transverse tubular cavity or cell
    • 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
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    • Y10T428/24752—Laterally noncoextensive components
    • 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
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    • Y10T428/24752—Laterally noncoextensive components
    • Y10T428/2476—Fabric, cloth or textile component
    • 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
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    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0581—Cutting part way through from opposite sides of work
    • 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
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    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0586—Effecting diverse or sequential cuts in same cutting step

Definitions

  • the invention relates to honeycomb core layers as used in sandwich materials for packaging and structural applications, and to methods and apparatus for making these honeycomb core layers.
  • honeycomb cores have been used for many decades as the core material for bulking and bending-ready sandwich dishes and plates.
  • honeycomb cores consist predominantly of aluminum or phenolic resin-impregnated aramid fiber paper and are usually produced in the expansion process.
  • a sandwich structure with two, usually glued cover layers offers extremely high stiffness and strength weight ratios.
  • the interest of other large industries in lightweight sandwich core materials with good weight-specific material characteristics is growing steadily, so that now more than half of the honeycomb core materials are used in other areas.
  • honeycomb for packaging, automotive and similar markets requires rapid continuous production of the honeycomb core layer to produce a product that is competitive with corrugated and other low cost materials.
  • a honeycomb core sandwich has high specific compressive strengths in the material plane due to its optimal nearly direction-independent support of the surface layers. Compared to the corrugated core sandwich (e.g., corrugated board), better edge crush resistance and flexural stiffness, particularly in the machine direction, can be achieved. As a result, significant weight and material savings are possible. Also perpendicular to the material plane, due to the vertical mutually supporting cell walls, the pressure characteristics are significantly better. In addition, a sandwich with honeycomb core has a better surface quality, which is particularly important for printing on packaging materials. Because of these advantages and the increasing demand for low-cost sandwich cores, there have been many attempts in the past to reduce the high cost of manufacturing honeycomb cores.
  • corrugated boards are processed into honeycomb cores.
  • corrugated boards are used in the cell walls of honeycomb cores (US 4,948,445 Hess).
  • individual corrugated sheets are fed with running in the direction of production waves and introduced short, passing through the entire corrugated cardboard thickness cross-sections. Therefore, after unfolding in the direction of production and expanding, honeycomb cores with relatively large cell widths and relatively thick cell walls are formed.
  • the process is similar to the expansion process with a coherent material web.
  • honeycombs and methods are known in which a corrugated board web (US 3,912,573 Kunz) or a single corrugated web (WO 91/00803 Kunz) is cut into strips with the shafts transverse to the production direction. After cutting the web a honeycomb core layer is then created by the sticking together of the individual strips. This method requires a certain size of the individual strips or special positioning bands, so that their handling is guaranteed. The size of the strips greatly reduces the web width after the strips are turned. In order not to obtain too small a width of the honeycomb core layer, the strips are cut in a further production step and glued to a honeycomb block, which is then promoted much slower across the production direction. For small honeycomb heights this honeycomb block may need to be cut.
  • honeycombs produced by such a method also have individual straight strips between individual corrugated or trapezoidally shaped cell wall strips.
  • Such reinforced honeycombs are already known from manual production via a block (WO 95/10412 Darfler). There are individual flat layers between The individual corrugated layers placed and glued to them.
  • honeycomb and process for their preparation in which a continuous material web is first corrugated or trapezoidal deformed after the introduction of cuts, before the contiguous cell walls are folded against each other and glued (WO 97/03816 plow).
  • a very light paper 40 g / m 2 to 80 g / m 2
  • waves of these low grammages it is advantageous to stabilize the shaft directly after the formation by sticking a web.
  • the FEFCO and ASSCO's International Shipping Code describes various forms of packaging and fillings, including a folded cardboard box number 0966. To facilitate folding, the corrugation of individual corrugated sheets is used as a guide and the remaining paper as a hinge used.
  • the invention has for its object to provide a honeycomb core layer, a method and an apparatus which allows the continuous production of honeycombs with relatively small cell widths, with a corrugated cardboard production comparable production speed. Furthermore, a good surface quality and a reliable and fast connection of the outer layers is desired.
  • a wavy or trapezoidal material web is preferably supplied with at least one, but preferably with two cover layers.
  • This can be corrugated board, but also a plastic, fiber composite or metal corrugated core board.
  • a web with several cores for example, a two -wave corrugated board (BC flute, AA flood) can be used.
  • the top layers of very thin material (basis weight between 60 g / m 2 and 100 g / m 2 ) and the corrugated core layer of up to 2 times as thick material, since the top layers come to lie in the preferred variant of the folded double .
  • Very low demands are placed on the quality of the cover layers, as well as on the thickness tolerance and surface quality of the corrugated web, since these factors have little influence on the surface quality of the end product.
  • the thickness of the corrugated cardboard web determines the width of the honeycomb cells.
  • cell widths of 4.7 mm (A-Flute), or at very low basis weights of 3.6 mm (C-flute) are sufficient, since the flat corrugated core cover strips provide additional support and the risk of denting the cover layers into the cells (dimpling). Reduce.
  • honeycomb cores with smaller or larger cell widths can also be produced from corrugated corrugated webs with smaller or larger heights of the shaft (for example K-flute).
  • the multilayer web is first provided in the conveying direction on the underside and the top with a plurality of continuous fold lines.
  • the fold lines can be introduced, for example, by pressing or longitudinal cutting of the web.
  • the cuts do not completely cut through the web in the thickness direction, but leave one covering layer (or the top layer and the wave crests) contiguous.
  • the cuts on the top are as close as possible between the cuts of the bottom.
  • the usual in corrugated board unevenness of the outer layers and the different cutting forces between the wave crests can cause the cover layer is partially or completely cut at individual locations. This is quite desirable as long as the corrugated core strips remain coherent in the transverse direction.
  • the required folding force can be reduced by this slight cutting or perforation of the outer layers or an additional pre-embossing of the fold line.
  • the corrugated core strips can also be completely cut through first and glued together at the same time or immediately afterwards by means of adhesive films. This material may be easier to bend or fold than the material of the web. Accordingly, the word combination "integrally formed" includes not only wavy strips interconnected by a cover layer but also separate wavy strips joined together by adhesive film.
  • the ratio between the width and the height of the continuous corrugated core strips is preferably in the range of 0.5 to 2.0.
  • the contiguous corrugated core strips are then each rotated by 90 ° so that the sections open and fold the contiguous cover layers of adjacent strips by 180 °. Since the strips are connected, no alignment in the thickness or longitudinal direction is necessary.
  • the strips lie flat against each other with the contiguous cover layers and form the folded honeycomb. They can be glued, otherwise connected or only connected by gluing the new cover layers through them.
  • the application of the adhesive may be carried out by rollers, nozzles or brushes, wherein an application is preferred, which is a relatively small amount of adhesive constantly applied.
  • the corrugated core strips are much more stable than just a cover layer and can be glued with some pressure. Possible deformations of the corrugated core, which often affect the surface quality during corrugated board production, take place here in the width direction and have no influence on the surface quality and thickness tolerance of the folded honeycomb.
  • the flat, in the honeycomb standing corrugated core coating strips can absorb the tensile stresses in the production direction and allow for rapid transport of the web. Later, they increase the shear and pressure characteristics of the honeycomb, so that all the material of the corrugated cardboard is used in the folded honeycomb core.
  • honeycomb panel material To produce a honeycomb panel material, new cover layers can be continuously adhered to the honeycomb core layer immediately after honeycomb production.
  • the high compressive strength of the honeycomb is very useful.
  • a good connection of the outer layers to the honeycomb can be achieved by a slight fraying of the edges when introducing the longitudinal cuts.
  • the small side surfaces of the folded corrugated core layer strips are additionally available for connecting the cover layers.
  • Fig. 1 shows the supplied corrugated web with the waves transverse to the production direction and the position of the longitudinal incisions in the plan view and the side view.
  • the corrugated web can be based on plastic, fabric, fiber composite, paper, cardboard or similar materials.
  • the corrugated core strips 1 are each bounded by two cuts 2 and 3.
  • the corrugated web is cut by these cuts, which do not cut completely through the material web in the thickness direction, alternately from top and bottom.
  • the remaining material (a cover layer and / or the wave crests of the corrugated core) is later folded around the fold lines 4 and 5 at this point.
  • Fig. 2 shows the position of the longitudinal cuts and the fold lines in the front view.
  • the ratio between the width and the height of each corrugated core strip is preferably in the range of 0.5 to 2.
  • FIG. 3 to Fig. 6 the folding of the continuous corrugated core strip is shown stepwise in the front view.
  • An adhesive 6, preferably for starch or PVA based packaging applications, may be applied to the corrugated core topsheet strips prior to folding.
  • the adhesive can be applied over the entire area or only where the wave crests or troughs of the adjacent corrugated core strips meet.
  • FIGS. 7 to 10 show the same intermediate steps of the production in perspective view.
  • FIG. 11 shows the process for producing the folded corrugated cardboard honeycomb in the plan view.
  • FIG. 12 shows the positions of the individual method steps. First, at position 10, the longitudinal cuts are made in the material web. Then takes place from 11 to 13, the rotation of the strip of material. Optionally, an adhesive can also only be introduced during twisting (about 12). At 14 then cover layers can be applied to the Faltwabe.
  • the length of this process step can therefore be relatively short ( ⁇ 0.5 m) if there is no change in the web width.
  • FIGS. 14 to 16 show the individual steps in the case of a possible deformation of the contiguous corrugated core strips out of the web plane in order to avoid the web width change.
  • the width change can be greatly reduced if the corrugated core strips are rotated one after the other. It is particularly advantageous to first twist every third corrugated core strip. In three stages so all corrugated core strips can be rotated without a noticeable change in width results.
  • Fig. 17 shows the three-step rotation of every third corrugated core strip and the resulting small deformations out of the orbital plane in individual front views. Individual or several corrugated core strips can also be rotated in a different order one after the other to limit the width change.
  • FIG. 18 shows a device for introducing the longitudinal cuts. This device may consist of simple slitters 20 rotating on upper 21 and lower 22 axes or on a plurality of separate axes.
  • the distance between the upper and lower cutting blades to each other and each other should be as uniform as possible in order to achieve a high cutting accuracy and thus a very constant honeycomb core thickness. Furthermore, the material web should be guided as exactly as possible (eg by rolling) so that an exact depth of the cuts is achieved.
  • the fast exact cutting of cores in the production direction is already carried out in corrugated board production. Apart from the preferred use of rotating knives, cutting with stationary knives is also conceivable.
  • the contiguous corrugated core strips form a relatively stable path, therefore, the corrugated core web can be conveyed after insertion of the incisions behind the longitudinal cutting knives with rollers or belts.
  • Fig. 19 shows a variable device 24 for introducing the longitudinal cuts.
  • Fig. 20 shows a device for rotating and folding the continuous corrugated core strips.
  • the device may consist of simple fixed guides 23, rotating rollers or conveyor belts.
  • the geometry of these guides determines how the contiguous corrugated core strips are twisted during transport and folded against each other. It is either a sequential turning, in which it comes to a very small step-shaped waves across the width or a simultaneous turning with a larger corrugation across the width possible.
  • Fig. 21 shows a variable device for simultaneously rotating and folding the continuous corrugated core strips with a corrugation across the width.
  • Figure 17 shows how the guides of the individual strips of material must rotate in three stages as each third corrugated core strip is rotated. In this variant, it is advantageous that it is sufficient to guide the respective non-rotating two corrugated core strips upwards or downwards in order to rotate the corrugated core strip in each case by 90 °.
  • honeycomb core layer thickness should preferably be over 4 mm, since the material savings compared to corrugated cardboard with two superimposed cores are particularly large. But even at lower altitudes, the honeycomb offers significantly better material properties.
  • the material can be made from the same, albeit lighter papers (Kraftliner or testliner) and the usual PVA-based adhesive on equipment that is substantially similar to the well-developed corrugators. The two additional process steps (inserting the longitudinal cuts and folding the contiguous corrugated strips) can be performed by the described simple devices and do not reduce the production speed.
  • the gluing of the cover layers can take place in the same production plant, directly after the core layer production, and for further processing of the honeycomb board, the cutting, punching and printing machines customary in the corrugated board processing industry can be used.
  • the honeycomb board has significantly better compressive strengths in the material plane (edge crush resistance, ECT) compared to corrugated board, especially in the production direction (machine direction). In addition, it offers significantly better pressure characteristics and greater impact energy absorption perpendicular to the material plane (flat crushing resistance, FCT). The possible weight and material savings, the direction-independent strength and the better surface quality, as well as the low cost of the additional production steps can be expected that the corrugated cardboard corrugated board is competitive with corrugated board.
  • edge crush resistance, ECT edge crush resistance
  • FCT flat crushing resistance
  • the folded honeycomb can be further processed into sandwich components without lamination of cover layers.
  • the honeycomb cells can also be filled with a foam or similar material for better acoustic and thermal insulation.
  • the honeycomb cell walls can be impregnated or coated by an immersion bath or by spraying. The good material properties and the low cost of production can be expected that this material in addition to the packaging applications in other areas such as interior trim components for vehicles, in furniture, floor coverings and Wandverkeidisme, etc. finds applications.

Landscapes

  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)
  • Cartons (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Catalysts (AREA)
EP00920578A 1999-03-26 2000-03-25 Faltwabe aus wellpappe, verfahren und vorrichtung zu deren herstellung Expired - Lifetime EP1165310B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19913830A DE19913830A1 (de) 1999-03-26 1999-03-26 Faltwabe aus Wellpappe, Verfahren und Vorrichtung zu deren Herstellung
DE19913830 1999-03-26
PCT/EP2000/002646 WO2000058080A1 (de) 1999-03-26 2000-03-25 Faltwabe aus wellpappe, verfahren und vorrichtung zu deren herstellung

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EP1165310A1 EP1165310A1 (de) 2002-01-02
EP1165310B1 EP1165310B1 (de) 2003-01-15
EP1165310B2 true EP1165310B2 (de) 2007-02-14

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US (1) US6800351B1 (zh)
EP (1) EP1165310B2 (zh)
JP (1) JP4740459B2 (zh)
CN (1) CN1238182C (zh)
AT (1) ATE231067T1 (zh)
AU (1) AU762081B2 (zh)
CA (1) CA2366504C (zh)
DE (2) DE19913830A1 (zh)
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CA2366504A1 (en) 2000-10-05
EP1165310A1 (de) 2002-01-02
ATE231067T1 (de) 2003-02-15
WO2000058080A1 (de) 2000-10-05
US6800351B1 (en) 2004-10-05
ES2190410T3 (es) 2003-08-01
CN1345269A (zh) 2002-04-17
CN1238182C (zh) 2006-01-25
JP2002539991A (ja) 2002-11-26
CA2366504C (en) 2008-07-22
JP4740459B2 (ja) 2011-08-03
AU4110400A (en) 2000-10-16
DE50001100D1 (de) 2003-02-20
EP1165310B1 (de) 2003-01-15
ES2190410T5 (es) 2007-10-01
AU762081B2 (en) 2003-06-19
DE19913830A1 (de) 2000-09-28

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