EP3831592A1 - Procédé de fabrication d'une structure cellulaire, structure cellulaire et utilisation - Google Patents

Procédé de fabrication d'une structure cellulaire, structure cellulaire et utilisation Download PDF

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Publication number
EP3831592A1
EP3831592A1 EP20212047.3A EP20212047A EP3831592A1 EP 3831592 A1 EP3831592 A1 EP 3831592A1 EP 20212047 A EP20212047 A EP 20212047A EP 3831592 A1 EP3831592 A1 EP 3831592A1
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EP
European Patent Office
Prior art keywords
cell
webs
layers
cell structure
layer
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.)
Pending
Application number
EP20212047.3A
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German (de)
English (en)
Inventor
Stefan LIPPITSCH
André WAGENFÜHR
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.)
Technische Universitaet Dresden
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Technische Universitaet Dresden
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Publication date
Application filed by Technische Universitaet Dresden filed Critical Technische Universitaet Dresden
Publication of EP3831592A1 publication Critical patent/EP3831592A1/fr
Pending 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
    • 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
    • B31D3/002—Methods for making cellular structures; Cellular structures
    • 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
    • B31D3/04—Making articles of cellular structure, e.g. insulating board cellular packaging articles, e.g. for bottles
    • 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
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0004—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making inserts, e.g. partitions, for boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/48—Partitions
    • B65D5/48024—Partitions inserted
    • B65D5/48026—Squaring or like elements, e.g. honeycomb element, i.e. at least four not aligned compartments
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/20—Construction of rigid or semi-rigid containers provided with two or more compartments
    • B31B2120/25—Construction of rigid or semi-rigid containers provided with two or more compartments formed by partitions or like inserts not integral with walls
    • 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
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0004—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making inserts, e.g. partitions, for boxes
    • B31D5/0026—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making inserts, e.g. partitions, for boxes involving collapsing or stacking the inserts

Definitions

  • the invention relates to a method for producing an expandable cell structure which has at least one structural layer comprising cell layers and at least one first boundary layer, the cell layers forming cell walls of the cell structure in the expanded state, the cell walls being longitudinal webs and being located between two adjacent ones at every stage of expansion parallel extending longitudinal webs comprise intermediate webs, and wherein in the at least one structural layer all cell layers lie against one another, the at least one structural layer in an expansion direction, perpendicular to the extension of the at least one structural layer in width, in the manner from a planar state to a structural layer in the Expanded state is expandable that the intermediate webs stand up against the longitudinal webs.
  • the flat, unexpanded, non-erect state of the cell structure also represents the transport and storage state, for example before the cells are filled.
  • the cell layers lie against one another in the flat state and are joined to one another at the joints required to form the cell structure. By later erecting and thus reshaping the cell layers from the flat state, the cells ultimately result in the desired and desired shape and form.
  • a structural layer is the smallest unit that independently represents a cell structure, but can also be combined with other structural layers to form a larger cell structure.
  • the invention also relates to a cell structure which has at least one structure layer comprising cell layers and at least one first boundary layer, the cell layers forming cell walls of the cell structure in the expanded state, the cell walls being longitudinal webs and extending between two adjacent longitudinal webs that run parallel in each stage of expansion Include intermediate webs, and wherein in the at least one structural layer all cell layers lie against one another, the at least one structural layer in an expansion direction, perpendicular to the extension of the at least one structural layer in width, in the manner of a non-expanded state, subsequently as a planar state in the sense referred to as "flat", it is expandable that the intermediate webs are erected with respect to the longitudinal webs.
  • the cell layers are flat layers of material and are supplied, for example, as webs or strips to produce a structural layer.
  • the invention further relates to the use of a cell structure which forms a compartment comprising cell walls.
  • the cell structure to which or, in particular, the production of which the present invention relates, is not necessarily hexagonal, but can also have a different number of corners, for example square.
  • compartments In the packaging industry, the subdivision of packing rooms is often carried out with the help of compartments. Conventional compartments are crossed, nested, individual cardboard or cardboard strips. They are used to separate packaged goods and thus have a sorting, but mostly also a protective function. A great advantage of common compartments is the possibility of transporting and storing them in a non-expanded, planar form with little space requirement.
  • Compartments require a comparatively complex manufacturing process. This is because the individual elements, the cardboard strips that make up compartments, are first punched out of sheets. The slots that are required for the later assembly by plugging together are also made. The free spaces required for plugging lead to voltage peaks when the compartment is loaded, which leads to a reduction in stability. The punched individual parts are then laboriously separated, handled and plugged into one another. In view of the enormous amounts of packaging and thus also compartments, each solution represents a considerable improvement, which enables a comparable function with more cost-effective production.
  • compartments produced by punching also requires large numbers of items, which is synonymous with a low level of flexibility. Because even compartments with the same cell structure but different heights always require a new punching tool.
  • Hexagonal honeycomb cores that do not require complex handling of individual components are easier to manufacture.
  • conventional hexagonal honeycomb cores have disadvantages which, depending on the application, exclude or severely restrict their use as a compartment.
  • a hexagonal honeycomb core tapers when expanding in the direction transverse to the direction of expansion. This prevents, for example, the use of effective packaging solutions in which the non-expanded core is glued directly to the packaging and only erected at the user. In this case, very uneven, sometimes unusable cells would result.
  • Their use is limited to very special cases, such as B. for the packaging of eggs, as in the document DE 858 224 B described.
  • a packaging unit which is also based on an expandable cell structure.
  • the resulting cell structure which is used as a compartment, only has hexagonal cells of the same size, which severely restricts the possible uses and, moreover, results in unusable cells at the edge of the packaging.
  • the pamphlets DE 10 2014 117 146 A1 and DE 361 66 32 A1 describe manufacturing processes based on complex cutting processes such as punching or lasers.
  • the pamphlets WO 00/012393 A1 and KR200481315 Y1 reveal nested compartments that do not allow continuous, efficient production.
  • the pamphlets CN 102673889 A , U.S. 5,875,608 A and JP 09187875 A also have an inserted compartment, in which hexagonal structures are also formed, the subject.
  • the width of the honeycomb core changes over the entire length of the core. If this were to be freely clamped, the result would be a strand with a width that is uniformly reduced towards the center. However, this is usually not the case with conventional expansion.
  • the core is pulled from the non-expanded shape into the expanded shape, a characteristic shape being established for the entire expansion area.
  • the reduction in width and the associated characteristic shape can be attributed to the restraint during the expansion process in combination with the elastic behavior of the material. While, viewed along the machine direction (MLR), the cells are converted from an ideally flat shape to an ideally hexagonal shape, each individual cell has a different, asymmetrical shape deviating from the regular hexagon with increasing distance from the plane of symmetry. The smaller the cell width and the longer the expansion range, the less influence the expansion has on the cell geometry of an individual cell.
  • the required core comprises only a few cells, as is the case, for example, when used as a compartment replacement. If a honeycomb core comprising only a few cells is expanded and its end faces are clamped in, a very irregular shape is created.
  • the object of the present invention is therefore to offer an expandable cell structure and a production method for the cell structure that offers high productivity and flexibility in the arrangement and design of the cell structure of the individual cells, enables a right-angled cell structure and at the same time a defined deformation when expanding having.
  • the object is achieved by a method for producing a cell structure which has at least one structural layer comprising cell layers.
  • the cell structure is separated from a subsequent cell structure by at least a first boundary layer, while the lower web or a second boundary layer delimit the preceding cell structure.
  • a web or a section of the web without an adhesive application can also be considered as the first limit position.
  • the cell layers form cell walls, especially longitudinal webs and intermediate webs that extend between two adjacent longitudinal webs that run parallel in every stage of expansion.
  • the cell layers are created when sheets and strips are fed in.
  • all cell walls lie against one another, since the webs and strips are fed in as planar materials.
  • the at least one structural layer can be expanded from a planar state in an expansion direction, perpendicular to the expansion of the at least one structural layer, in such a way that the intermediate webs stand up in relation to the longitudinal webs.
  • a first process step in a first process step, several endless cell layers are fed as webs to the continuous cell layers over the width of the first boundary layer, connected to the longitudinal webs in the region of at least one joining zone, for the formation of the intermediate webs.
  • strips are provided which only take up part of the width of the web, in particular the width of the intermediate webs, and which additionally comprise a connecting tab on both sides for joining in the joining zone.
  • the tracks and, if any, the strips are fed in layers on top of each other so that several layers can be formed at once.
  • the layers are connected to one another in lanes or strips in the area of joining zones and continuously by joining in such a way that a joint is directly connected to each of the joining zones.
  • the latter results from the bending away of the two bonded webs during expansion. Preparing the bending points is particularly advantageous with stronger, rigid materials.
  • a third process step structural layers that are present as a strand and are connected at the joining zones are separated into sections, so that the originally planar cell structure that was completed after the last process step is formed after the expansion.
  • the length of the sections of the structural layers corresponds to a wall height of the cell structure.
  • the structural layer is the smallest unit that independently represents a cell structure, but can also be combined with other structural layers to form a larger cell structure. The joining takes place until a boundary layer prevents this and enables a new cell structure.
  • the beginning of a new cell structure is formed in each case by a first, lower web of the first structure layer, but can also be fed in discontinuously as a separate second boundary layer.
  • This manufacturing process is used to produce the cell structure according to the invention. If the number of cell layers, the number of bonded structural layers, the bond location or its width are varied, different cell structures according to the invention result.
  • the length of the sections of the structural layer separated from the strand gives the height of the cell structure.
  • the height can also be varied by using a non-linear cut to create advantageous cell structures with cell walls of different heights.
  • Quasi-endless cell layers for several cell structures are preferably supplied at the same time.
  • the beginning and end of a new cell structure are formed by the boundary layer without joining zones, in particular without application of adhesive, on the side facing away from the structural layer, that is to say the outside of the individual cell structure.
  • cell layers for example paper webs and / or paper strips
  • cell layers for example paper webs and / or paper strips
  • the structure achieved then not only serves as the core structure for sandwich components, but also offers the possibility of subdividing packing rooms according to the application. All packaging materials that can be produced in this way use the kinematic properties of combined slider crank and parallel crank drives when they expand.
  • the joining takes place during production by means of a strip-shaped application of adhesive.
  • other joining methods can also be used, such as B. heat sealing a correspondingly suitable material web or the use of a material provided with an appropriately activatable adhesive strip.
  • the Activation can be done by heat, but also in other ways depending on the type of adhesive.
  • an expandable cell structure which has at least one structure layer comprising cell layers, initially planar in an initial state, which is pulled apart in an expansion direction during expansion.
  • the cell layers the layers arranged on top of one another and partially connected to one another, form cell walls, which as such only come into effect when the cell structure is expanded and the cell walls are erected.
  • all of the cell walls which comprise longitudinal webs and intermediate webs which extend between two adjacent longitudinal webs which run parallel in each stage of expansion, rest against one another.
  • the structural layer can be expanded in an expansion direction, perpendicular to the expansion of the structural layer, in such a way that the intermediate webs are erected with respect to the longitudinal webs and thereby free spaces, for example the packing spaces for a compartment.
  • the intermediate webs While in the non-expanded, planar state of the structural layers, the intermediate webs are essentially parallel to the longitudinal webs and assume an angle of approximately 0 ° to one another, the angle in a joint increases to up to 90 ° when erecting. As soon as the joints assume an angle of almost 90 °, the cells of the cell structure are almost rectangular.
  • the at least one structural layer comprises a first and a second boundary layer, one of which is usually already formed by the lower web.
  • the other boundary layer usually the upper or last in the respective cell layer, which is separated and conveyed into the shaft, is preferably formed by a section of a non-glued web.
  • the boundary layers form the upper and lower ends of a cell structure.
  • the cell walls also form a parallel kinematic cell geometry. In general, in a parallel kinematic multi-axis system, all actuators act on a common platform. This means that the dynamic properties of the axes can be designed identically.
  • the cell walls in the present invention follow the kinematic properties of combined slider crank and parallel crank drives, hereinafter referred to as parallel kinematic cell geometry. It also follows from this that all intermediate webs must be the same in length.
  • cell layers that are continuous over the width and are connected to the longitudinal webs in the region of at least one joining zone are provided for the formation of the intermediate webs.
  • the width of the longitudinal webs, in the non-expanded and in the expanded state, can extend beyond the intermediate webs or no intermediate webs have to form an outer, laterally closed edge area in the expanded state.
  • cell layers are provided for the formation of the intermediate webs, which are provided as strips that only cover the width of the intermediate web and on each side a connecting tab for joining in the joining zone. This arrangement advantageously prevents an undefined reduction in the width of the cell structure associated with the expansion during the expansion of the at least one structural layer.
  • cell structures are created which, in terms of their cell geometry, are based exclusively on four-link linkages, instead of exclusively on six-link linkages, as is the case with conventional ones Honeycomb core.
  • the four-link chains that are lined up and connected to one another have only one degree of freedom.
  • An additional constraint creates a precisely defined cell geometry and, as a result, the cell structure according to the invention with its advantageous properties.
  • a further cell layer must be applied for each compartment to the side of a central six-link coupling gear.
  • this leads to multiple layers of cells arranged one above the other and joined together. This results in a higher stability, but also a higher weight and a higher cost of materials.
  • the non-expanded cell structure comprises other cell layers for the formation of the intermediate webs.
  • These cell layers are designed as strips that only encompass the width of the intermediate web plus a connecting tab on each side for joining in the joining zone. As a result, strips that are separated in sections across the width and preferably joined to the separately provided connecting straps are used, so that unnecessary duplication or multiple overlapping of material is avoided.
  • the cell walls together form the parallel kinematic cell geometry by flanking at least one six-link coupling gear in the at least one structural layer by two rows arranged one behind the other in the expansion direction, each with at least one four-link coupling gear.
  • the six-link coupling mechanism extends between two tracks that form its longitudinal webs.
  • the two four-link linkage flank the six-link linkage on at least one side, which is each formed by two adjacent intermediate webs.
  • Each of the four-link linkage is connected to one of the intermediate webs of the six-link linkage.
  • each structural layer is constructed symmetrically and the central six-link linkage is flanked on both sides by the same number of four-link linkage. It continues to be beneficial Further, a different cell geometry with different cell sizes and / or wall heights is provided in each structural layer.
  • the non-expanded cell structure comprises cell layers that are continuous over the width and are connected to the longitudinal webs in the region of at least one joining zone for the formation of the intermediate webs.
  • Joining is preferably carried out by gluing by means of previously applied adhesive, in particular strip-shaped areas, alternatively by a separate application of adhesive, a pressure-sensitive adhesive or in another suitable manner, such as, for. B. a sealing process.
  • the joining zone does not have to be completely glued; one glued area at the edges of the joining zone is sufficient.
  • a variable-length cell structure with a defined change in width is used as a packaging material.
  • the packaging means based on an expandable cell structure, forms the compartment comprising a partition, in particular for arrangement in a folding box.
  • An expandable cell structure according to the invention is provided as compartments.
  • the web walls advantageously run in the fully expanded state of the compartment when the joints between the longitudinal and intermediate webs assume an angle of almost 90 °, at right angles to one another and parallel to the outer edges of the packaging.
  • a particular advantage of the present invention arises accordingly when the compartment is used as an interior device for folding boxes.
  • the compartment can also be designed with compartments of different sizes and web height profiles.
  • the cell structure does not necessarily have to be overexpanded by 90 °, but rather installed at other angles, for example 45 °.
  • the expandable cell structure described above can also be used as a variable-length product with a defined change in width, such as, for. B. in the furniture industry or as a pressure-resistant sandwich core, is advantageously used.
  • This is also possible, for example, with locally varying wearing properties, in particular by changing the cell size locally, e.g. B. according to the expected load is varied.
  • the locally varied cell structures result in sandwich core materials with partially different wearing properties.
  • the invention offers a modification of the manufacturing method for conventional honeycomb structures so that such erectable cell structures can be manufactured very effectively with this method.
  • the manufacturing method according to the invention offers significant advantages over the prior art, e.g. B. by other, above all flexible adhesive patterns depending on the intended cell structure, the possible use of strips instead of webs and the fact that there is no endless cell structure, but rather individual products are formed despite quasi-continuous production due to the uncoated, adhesive-free boundary layer.
  • Cell structures, in particular with a repeating pattern can be produced in a simple manner by lining up and gluing structural layers.
  • the packaging industry is only an exemplary application for the cell structure according to the invention.
  • other objects of variable length for example for the furniture industry, could also be produced according to the principle according to the invention.
  • Cell structures produced in this way can also be used as special core layers for sandwich composites.
  • Fig. 1 shows a top view of a honeycomb core 1 according to the prior art, which is joined with two parallel planes and then expanded and in which the individual honeycombs are formed by cell separators 2.
  • the change between single and double bars is characteristic, which results from the bonding of individual cell layers. It can be seen that the entire structure constricts in the middle area and decreases in width. This common reduction in width shows the behavior of a conventional honeycomb core, which is disadvantageous for many applications, and which is overcome with the present invention.
  • Fig. 2 shows further top views of three exemplary intermediate states of a honeycomb core 1 according to the prior art during the expansion, wherein also initially completely unexpanded honeycomb cores and thus present in the delivery state are erected and brought into a hexagonal honeycomb shape.
  • An arrow pointing upwards indicates the direction of expansion in which the honeycomb core 1 is pulled apart. The cells are then stretched further until they are almost rectangular in shape.
  • the width of the honeycomb core 1 decreases unevenly during expansion.
  • Fig. 3 shows a perspective view of a compartment 6 according to the prior art, the individual cells being formed by four compartment walls 7. These have a fixed length so that a mechanism based on the principle of parallel crank drives works when they are folded up and unfolded.
  • the complex manufacture of such compartments is disadvantageous, since the required blanks are comparatively complex to manufacture and to be inserted into one another.
  • the for The punched slots that are required to fit into one another also reduce the stability and strength and promote the formation and growth of cracks in the material.
  • Fig. 4 shows a schematic plan view of three exemplary intermediate states of an embodiment of a cell structure 20 according to the invention, comprising a structure layer 50 including boundary layer 32 during the expansion.
  • the erection begins in the direction of the arrow, the expansion direction 12.
  • the partially erected cell structure 20 is shown, the embodiment consisting of several rectangular cells, which in the direction of expansion are equal to the conditions of cranks long crank and coupling lengths as well as in the transverse direction the conditions of parallel cranks with cranks of the same length.
  • the exemplary arrangement also results in a hexagonal cell that approximates a rectangle when it is maximally erected.
  • Letter c) shows the fully erect cell structure 20 '.
  • the cells of the cell layer 31, the structural layer 50 or the cell structure 20 ′ are formed by longitudinal webs 34 and intermediate webs 36.
  • the longitudinal webs 34 are connected to the intermediate webs 36 via joints 37.
  • Fig. 5 shows a schematic perspective view of an embodiment of a cell structure 10 "according to the invention with different wall heights. This is achieved in that the cell structure 10" is not cut in a straight line when separating the structural layer, here only on one side, the top. Instead, the desired height profile is taken into account by choosing a cutting line for the cut.
  • Fig. 6 shows a schematic view from above of an embodiment of a cell structure 20 'according to the invention, in which both for the formation of the longitudinal webs 34, as well as for the intermediate webs 36, continuous webs 122, 122' encompassing the full width (see also FIG Fig. 8 ) as cell layers 31 to form a strand of the structure layer 50 (shown here already expanded to form the structure layer 50 ') one above the other.
  • Fig. 7 shows a schematic view from above of a further embodiment of a cell structure 10 'according to the invention, the cell layers 31 of which are made up of webs 122, 122', but also of strips 132 (see also FIG Fig. 8 ) consists.
  • the webs 122, 122 ′ are used for the longitudinal webs 34 and are connected to a plurality of intermediate webs 36 in a respective joining zone 38 via connecting tabs 39.
  • the intermediate webs 36 are formed from the strips 132, 132 ′, which have the width of the intermediate web 36 plus connecting tabs 39.
  • the joint 37 is formed between the intermediate web 36 and the connecting strap 39. This is the case in the structural layer 50 ′ and likewise immediately following the joining zone 38.
  • Fig. 8 shows a schematic perspective view of an embodiment of a device 110 for producing a cell structure 10 according to the invention.
  • the erection to form the cell structure 10 ' advantageously takes place later, in particular immediately before use. Not only tracks 122, 122 ', but also strips 132, 132' are used here.
  • Fig. 9 shows a schematic perspective view of an embodiment of a cell structure 10 in three stages of erection.
  • the illustrated cell structure 10 comprises a single structure layer 50 with cell layers 31 which have been supplied as webs 122 and strips 132.
  • the longitudinal webs 34 protrude beyond the outer joining zones 38 at which the intermediate webs 32 are connected to the longitudinal webs 34.
  • the position of the intermediate webs 32 is freely selectable and adjustable via the feeding of the strips 132 and their position over the working width.
  • the border layer 32 forms the end.
  • the cell structure 10 does not have a hexagonal structure.
  • Fig. 10 shows a schematic perspective view of a packaging means, used as the interior of a folding box 60, comprising an embodiment of a cell structure 10 according to the invention, and its erection in steps a) to g).
  • the boundary layers 32 here consist of, for example, silicone-coated release paper, which is later removed again so that the subsequent gluing with a folding box blank 62 can be ensured.
  • the cell structure 10 was joined with pressure-sensitive adhesive according to the method according to the invention. This is illustrated in steps a) and b).
  • the folding box 60 When the folding box 60 is erected in steps e) to g), the cell structure 10 'is also erected, and the finished packaging material is produced. In this case, the folding box 60 with the walls of the folding box blank 62 replaces both boundary layers 32, which were only used temporarily as separating paper during manufacture.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
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EP20212047.3A 2019-12-06 2020-12-04 Procédé de fabrication d'une structure cellulaire, structure cellulaire et utilisation Pending EP3831592A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019133452.7A DE102019133452A1 (de) 2019-12-06 2019-12-06 Verfahren zur Herstellung einer Zellstruktur, Zellstruktur und Verwendung

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EP3831592A1 true EP3831592A1 (fr) 2021-06-09

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DE102022102916A1 (de) 2022-02-08 2023-08-10 Technische Universität Dresden, Körperschaft des öffentlichen Rechts Zellstruktur, Verfahren zur Herstellung einer Zellstruktur und Zellstützkern

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US5875608A (en) 1997-03-17 1999-03-02 Quinif; Edward G. Expandable spacer cores for flush doors and the method of making same
WO2000012393A1 (fr) 1998-09-01 2000-03-09 Clifford Packaging Limited Carton et ebauche y relative
DE19845991A1 (de) 1998-09-30 2000-04-20 Hung Chih Shiu Verfahren zum Herstellen von Unterlagen mit Wabenstruktur
US20070051661A1 (en) 2005-08-31 2007-03-08 Hugenholtz Roland P H Flexible compartment system
CN102673889A (zh) 2011-03-11 2012-09-19 永硕联合国际股份有限公司 蜂巢结构及缓冲箱体
DE102014117146A1 (de) 2014-11-24 2016-05-25 Wellpappe Auerswalde KG Automatenfaltschachtel mit eingeklebtem Gefach und Verfahren zum Herstellen einer solchen Automatenfaltschachtel
KR200481315Y1 (ko) 2015-12-28 2016-09-09 주식회사 현대에코팩 포장상자

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