EP2743071B1 - Method and device for manufacturing an upholstery product part and upholstery product - Google Patents

Method and device for manufacturing an upholstery product part and upholstery product Download PDF

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Publication number
EP2743071B1
EP2743071B1 EP13192361.7A EP13192361A EP2743071B1 EP 2743071 B1 EP2743071 B1 EP 2743071B1 EP 13192361 A EP13192361 A EP 13192361A EP 2743071 B1 EP2743071 B1 EP 2743071B1
Authority
EP
European Patent Office
Prior art keywords
paper strip
drive rollers
edge regions
central region
spreader
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.)
Active
Application number
EP13192361.7A
Other languages
German (de)
French (fr)
Other versions
EP2743071A3 (en
EP2743071A2 (en
Inventor
Paul Deis
Jean-Marc Slovencik
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.)
Storopack Hans Reichenecker GmbH
Original Assignee
Storopack Hans Reichenecker GmbH
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
Application filed by Storopack Hans Reichenecker GmbH filed Critical Storopack Hans Reichenecker GmbH
Priority to PL13192361T priority Critical patent/PL2743071T3/en
Publication of EP2743071A2 publication Critical patent/EP2743071A2/en
Publication of EP2743071A3 publication Critical patent/EP2743071A3/en
Application granted granted Critical
Publication of EP2743071B1 publication Critical patent/EP2743071B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
    • B31D5/0043—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material
    • B31D5/0052—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material involving rollers
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/127—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using rigid or semi-rigid sheets of shock-absorbing material
    • 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
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0017—Providing stock material in a particular form
    • B31D2205/0023—Providing stock material in a particular form as web from a roll
    • 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
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0047—Feeding, guiding or shaping the material
    • 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
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0058—Cutting; Individualising the final products
    • 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
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0064—Stabilizing the shape of the final product, e.g. by mechanical interlocking
    • 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
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0076—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads involving particular machinery details
    • B31D2205/0082—General layout of the machinery or relative arrangement of its subunits
    • 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
    • B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D2581/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D2581/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D2581/051—Details of packaging elements for maintaining contents at spaced relation from package walls, or from other contents
    • B65D2581/052—Materials
    • B65D2581/053—Paper in general, e.g. paperboard, carton, molded paper
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24446—Wrinkled, creased, crinkled or creped
    • Y10T428/24455—Paper
    • Y10T428/24463—Plural paper components

Definitions

  • the invention relates to a method and an apparatus for producing a padding product.
  • the invention also relates to a padding product as such.
  • the padding product is produced from a flat, elongated two- or multi-ply paper strip.
  • the upholstery product disclosed therein comprises two or more layers, which are connected to one another, in particular at their edge region, by embossing, indenting or punching (compare FIGS. 7 and 11 and paragraph [0088]).
  • a flat, elongated, two or more layer paper strip is provided.
  • the individual layers of the paper strip are connected to each other in the longitudinally extending central region at least in sections. It is conceivable that the connection takes place positively or materially. In particular, bonding of the individual layers in the middle region has proven to be particularly preferred.
  • the adhesive connection can be preferably along a line extending in the longitudinal direction extend.
  • the adhesive bond can be only partially, for example, pointwise. However, the adhesive bond can also be provided along a closed line.
  • the individual layers of the paper strip also have non-interconnected edge regions.
  • adjacent edge regions are preferably adjacent to one another.
  • four edge regions are then preferably present, in which case two edge regions abut one another in the flat state.
  • three or more layers may be provided.
  • three or more edge portions are provided adjacent to each other in the flat state.
  • a paper strip, which in particular has two layers, is comparatively easy to provide.
  • the adjacent, in particular abutting edge regions are opened to a cross-section star-like paper strip.
  • a two-ply strip of paper then forms a star-like strip of paper with a total of four protruding "rays", these still being connected in the central, central area.
  • the respective adjacent beams preferably include an angle in the range of 60 ° to 120 ° and preferably in the range of 70 ° to 100 ° and more preferably in the range of 85 ° to 95 °.
  • the paper strip is then crumpled at least along the central region.
  • the crumpling takes place in the longitudinal direction at least along the central region such that portions of the central region are moved toward one another or pushed so that the length of the paper strip in the crumpled state, ie the padding product, is shorter than the paper strip in the uncrowned state. This also results in a greater restoring elasticity in the longitudinal direction of the crumpled paper strip in comparison to the non-crumpled paper strip.
  • the striking of the adjacent edge regions of the paper strip can preferably take place via one or more impact cores, over which the paper strip is moved.
  • the moving of the paper strip on the impact cores can preferably be done mechanically by means of a drive.
  • attack in the central region of the paper strip on the paper strip drive rollers that move the paper strip can be done mechanically by means of a drive.
  • Crumpling may be done in accordance with the invention with a first set of drive rollers and a second set of drive rollers such that the second set of drive rollers rotate at an angular velocity less than that Angular velocity of the first set of drive rollers.
  • the paper strip can be moved not only on impact cores; also crumpling along the longitudinal direction in the central region can be provided thereby.
  • a more or less strong crumpling of the paper strip can take place.
  • the two areas are separated by tearing apart.
  • the paper strip transversely to the longitudinal direction extending predetermined separation points, in particular in the form of perforations having.
  • a device for producing a padding product in particular for carrying out the method according to the invention, according to the features of claim 5.
  • a device according to the preamble of claim 1 is from the US 2009/082187 A1 previously known.
  • Such a device comprises an entry region for a flat, elongate two- or multi-ply paper strip.
  • the paper strip as such is designed in this way - and that is not from the US 2009/082187 A1 vortex- that the individual layers of the paper strip in a longitudinally extending central region are at least partially connected to each other and the individual layers of the paper strip not together have connected edge regions.
  • the apparatus further provides an impact core for striking the flat paper strip along adjacent edge regions to a paper strip of a star-like cross-section.
  • the apparatus further provides a feed mechanism for moving the edge portions over the at least one impact core and a crimping mechanism for crumpling the paper strip along the central area.
  • the entry region, the impact core, the feed mechanism and the crumple mechanism are preferably designed so that the inventive method described above can be carried out with the device.
  • the apparatus provides at least two opposing impact cores spaced transversely from one another such that the central region of the paper strip is movable between the impact cores.
  • the edge regions of the layers can be opened so that a star-like paper strip is formed.
  • the middle area of the paper strip, in which the individual layers are connected to each other, can still be moved between the impact cores.
  • the impact cores are formed so that they have in cross section, ie transversely to the longitudinal direction, directed towards each other wedge sections.
  • cross section ie transversely to the longitudinal direction, directed towards each other wedge sections.
  • the impact cores provide in a longitudinal section, that is to say in the longitudinal direction, wedge-shaped impact sections directed towards the entry region. These impact sections may strike the flat paper strip along adjacent edge region take place so that the adjacent edge regions are pitched away from each other, so that ultimately a cross-section star-like paper strip is formed. Serving sections thus serve to convert the flat paper strip into a strip of paper which has a star-shaped cross section.
  • the impact cores separating elements may be upstream in the longitudinal direction, which engage between adjacent edge portions. Consequently, the separating elements serve to intervene in the adjacent edge sections, which lie on one another, in particular, in order then to ensure a process-reliable opening of the edge areas.
  • the separating elements are in particular made thin and flat, and moreover, like the impact cores, are spaced apart from one another in the transverse direction, so that the middle region of the paper strip in which the individual layers are connected to one another can be passed between them.
  • the separating elements may in particular be designed as cutting discs or sheets and may also be formed integrally with the impact cores, in particular at the wedge tips of the impact portions.
  • a transverse to the longitudinal direction of the guide roller is arranged, over which the flat paper strip is passed. This is advantageous if the paper strip, for example, unrolled from a supply roll or removed from a supply stack.
  • the feed mechanism for moving the edge regions over the preferably two impact cores may be formed by a first set of drive rollers.
  • This first sentence Drive rollers may comprise two superimposed rollers which respectively engage above and below the central portion of the paper strip longitudinally in front of the impact wedge on the paper strip.
  • the two rollers can be arranged in particular so that they attack the paper strip in the region between the separating elements.
  • the crumpling mechanism is formed by a second set of drive rollers cooperating with the first set of drive rollers such that the second set of drive rollers is rotatable at an angular speed which is less than the angular speed with which the first set of drive rollers is rotatable. This can be moved over the first set of drive rollers of the paper strip; with the second set of drive rollers, a crumpling of the paper strip can be achieved.
  • the second set of drive rollers may comprise two superimposed rollers which engage above and below the central region of the paper strip in the longitudinal direction in the area between or after the impact wedges on the paper strip. It is therefore advantageous if the first set engages drive rollers in the area in front of the impact wedge on the paper strip and the second set engages drive rollers in the region between or after the impact wedges on the paper strip.
  • first set of drive rollers and the second set of drive rollers can be driven in such a way that the first set of drive rollers can be braked or stopped to separate the padding products into two areas and the second set of drive rollers can continue to be driven.
  • This can be a simple way of separating the Upholstery product by the two sets of drive rollers, which accomplish a crumple, can be achieved.
  • a padding product which is produced in particular by a method according to the invention and / or which is produced in particular with a device according to the invention.
  • a padding product is made of an elongated, two- or multi-ply paper strip - what the US 2009/082187 A1 is already known -, wherein the individual layers are at least partially connected to each other in a longitudinally extending central region and wherein the individual layers have not interconnected edge regions - and that is not from the US 2009/082187 A1 known. Furthermore, it is new to the US 2009/082187 A1 in that the adjacent edge regions are struck star-like and the paper strip is crumpled at least along the middle region.
  • Such a paper strip can be produced in a simple manner and yet has positive padding properties.
  • the in the Figures 1 and 2 shown paper strip 10 has two layers 12 and 14.
  • the two layers 12, 14 lie on each other and have identical outer contours. They have an elongated format, wherein the central longitudinal axis is designated by the reference numeral 16.
  • the paper strip 10 may be an "endless" length of paper strip which can be unrolled, for example, from a roll or is removable from a stack.
  • the two layers 12, 14 are in their central region 18, which in the in Figures 1 and 2 shown paper strip along the central longitudinal axis 16 extends, connected to each other.
  • the two layers 12, 14 along the central longitudinal axis 16 cohesively, in particular by gluing, connected to each other.
  • the two layers 12, 14 also have not interconnected edge regions 20, 21 and 22, 23.
  • the layer 12 thus has the two edge regions 20, 21.
  • the layer 14 has the two edge regions 22, 23.
  • the edge region 20 of the layer 12 is arranged adjacent to the edge region 22 of the layer 14.
  • the edge region 21 of the layer 12 adjacent to the edge region 23 of the layer 14 is arranged.
  • the edge regions 20 and 22 and the edge regions 21 and 23 can touch each other.
  • These edge regions 20, 21, 22, 23 are then turned into beams 26, as described below.
  • the paper strip 10 transverse to the longitudinal axis 16 extending predetermined separation regions 24, which are formed as provided in the layers 20 and 22 perforations. In this way, the paper strip 10 can be separated into two areas, along a predetermined separation point 24, by tearing in the longitudinal direction.
  • FIG. 3 the paper strip 10 is shown as it is converted into a padding product.
  • the device 50 comprises an inlet region 52, in which a guide roller 56 is arranged which is arranged transversely to the longitudinal direction 54 running along the central longitudinal axis 16 of the paper strip 10.
  • the guide roller 56 is rotatably arranged about a rotation axis 58, in such a way that the endless paper strip 10 is guided via the guide roller 56 during operation of the device 50.
  • the device 50 further comprises two impact cores 58 for impacting the flat paper strip 10 to a cross-sectionally star-shaped paper strip 10 '.
  • the device 50 further comprises an exit region 60 in which the star-like opened paper strip 10 'can be clearly seen.
  • the apparatus 50 comprises a feed mechanism 62 for moving the paper strip 10 in the device 50 and a crumpling mechanism 64 for crumpling the paper Paper strip 10 and 10 'along the central area 18th
  • the impact cores 58 are opposite to each other and are in the transverse direction, ie perpendicular to the longitudinal direction 54, spaced by the dimension a from each other.
  • the dimension a is chosen such that the central region 18 of the paper strip 10, ie the region in which the two layers 12 and 14 are connected to each other, is movable between the two impact cores 58.
  • the two impact cores 58 have wedge sections 66 directed towards one another in cross-section. The two wedge sections enclose an angle of about 75 °.
  • the impact cores 58 provide wedge-shaped impact sections 68 in a longitudinal section towards the inlet region 52. During operation of the device 50, the paper strip 10 is hit in the edge regions 20, 21, 22, 23 along the impact sections 68.
  • separating elements 70 In order to ensure a safe impact of the edge regions 20, 21, 22, 23, opposite to the longitudinal direction 54 of the impact cores 68 separating elements 70, in particular in FIG. 3 and 4 clearly visible, upstream.
  • the separating elements 70 are designed as separating plates and are integrally formed with the impact cores 58 in the embodiment shown in the figures.
  • the separating elements 70 engage between the mutually adjacent edge regions 20 and 22 or 21 and 23 of the paper strip 10 so that the edge regions 20, 21 and 22, 23 move away from the device during operation Impact cores 58 can be safely pitched.
  • the feed mechanism 62 includes a first set of drive rollers 74, 76 which are in FIG. 3 and 4 are clearly shown.
  • the drive rollers 74, 76 are arranged one above the other and each engage above and below the central region 18 of the paper strip 10 on the paper strip 10.
  • the drive roller 76 is driven by a motor 78 via a V-belt 80.
  • the roller 74 is biased against the roller 76 so that it is driven by the roller 76 with low bias.
  • a second set of drive rollers 82, 84 is provided, which is located downstream of the first drive set rollers 74, 76 in the longitudinal direction 54.
  • the second set of drive rollers 82, 84 also drives the lower roller 84 via another electric motor 78 via another V-belt 80.
  • the upper roller 82 is biased against the lower roller 84, thus that this rotates when turning the roller 84 with.
  • FIG. 4 How out, in particular FIG. 4 is clear, is the first set of drive rollers 74, 76 in the longitudinal direction 54 in front of the impact cores 58, in the area between the two separating elements 70. As also out FIG. 4 becomes clear, is the second set of drive rollers 82, 84 in the area between the two impact cores 54. Off FIG. 5 It is clear that the drive rollers 82, 84, and the drive rollers 74, 76 have a width b the is slightly smaller than the distance a between the impact cores 58.
  • the angular velocity of the rollers 82, 84 of the second drive set is so selected that it is slightly less than the angular velocity of the drive rollers 74, 76 of the first set. This causes crumpling of the paper strip 10 in the central region 18 in a crimping zone 86, with the crimping zone 86 between the two sets of rollers 74, 76 and 82, 84.
  • the paper strip 10 thus leaves the device in the exit region 60 as a padding product, which is opened in a star-like manner and, on the other hand, in particular in the middle region.
  • the rollers 74, 76 and 82, 84 rotate at the same angular velocity, so that the paper strip 10 'is not crumpled here.
  • the paper strip 10 'leaving the device 50 thus has the central area 18 which is guided between the rollers 72, 74 and 82, 84.
  • the central region 18 has a width which corresponds to the width b. It is conceivable to reduce the width b to a very small measure or a line.
  • the angular velocity of the rollers 74, 76 is increased or that of the rollers 82, 84 lowered.
  • such a padding product can be easily manufactured while also having favorable cushioning properties.
  • a paper strip 10 is shown, which has only two layers, it is conceivable that a paper strip is used which has three or more layers.
  • the three or more layers are then connected to each other in the central region 18, or preferably in the region of the central longitudinal axis 16.
  • two opposing impact cores 58 are then advantageously a total of four or more impact cores use, which engage in the spaces between the respective adjacent edge regions of the respective layers.
  • FIG. 6 a crumpled paper strip 10 ", ie the finished upholstery product 88, produced with the device 50.
  • the crumpled middle region 18 with its width b, against which the edge regions 20, 21, 22, 23 and the rays 26, respectively, can be clearly seen connect.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Buffer Packaging (AREA)
  • Sanitary Thin Papers (AREA)

Description

Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Herstellen eines Polsterungserzeugnisses. Die Erfindung betrifft außerdem ein Polsterungserzeugnis als solches. Das Polsterungserzeugnis wird dabei hergestellt aus einem flachen, länglichen zwei- oder mehrlagigen Papierstreifen.The invention relates to a method and an apparatus for producing a padding product. The invention also relates to a padding product as such. The padding product is produced from a flat, elongated two- or multi-ply paper strip.

Aus der EP 1 539 474 B1 ist ein Polsterungserzeugnis bekannt, das aus einem zweilagigen Papierschlauch geknüllt ist. Aus dem benannten Dokument ist zudem eine Vorrichtung sowie in Verfahren bekannt, mit denen aus dem länglichen Papierschlauch das dort offenbarte Polsterungserzeugnis geknüllt wird.From the EP 1 539 474 B1 For example, there is known a padding product which is crumpled from a two-ply paper tube. The document cited also discloses a device as well as methods in which the upholstery product disclosed there is crumpled out of the elongated paper tube.

Aus der US 2009/082187 A1 sind ein Verfahren und eine Vorrichtung zum Herstellen eines Polsterungserzeugnisses bekannt. Das dort offenbarte Polsterungserzeugnis umfasst zwei oder mehr Lagen, die insbesondere an ihrem Randbereich miteinander durch Prägen, Eindrücken oder Stanzen verbunden sind (vgl. Fig. 7 und 11 sowie Abs. [0088]).From the US 2009/082187 A1 For example, a method and an apparatus for producing a padding product are known. The upholstery product disclosed therein comprises two or more layers, which are connected to one another, in particular at their edge region, by embossing, indenting or punching (compare FIGS. 7 and 11 and paragraph [0088]).

Der vorliegenden Erfindung liegt unter anderem die Aufgabe zu Grunde, ein Verfahren zur Herstellung eines Polsterungserzeugnisses, das insbesondere zur Polsterung von in Verpackungen befindlichen Gegenständen geeignet ist, bereitzustellen.It is inter alia an object of the present invention to provide a method for the production of a padding product, which is particularly suitable for the padding of articles located in packages.

Diese Aufgabe wird durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved by a method having the features of patent claim 1.

Das erfindungsgemäße Verfahren umfasst folgende Schritte:

  • Bereitstellen eines flachen, länglichen, zwei- oder mehrlagigen Papierstreifens, wobei die einzelnen Lagen des Papierstreifens in einem sich in Längsrichtung erstreckenden mittleren Bereich wenigstens abschnittsweise miteinander verbunden sind und wobei die einzelnen Lagen des Papierstreifens nicht miteinander verbundene Randbereiche aufweisen,
  • Aufschlagen des Papierstreifens an benachbarten Randbereichen zu einem im Querschnitt sternartigen Papierstreifen,
  • Knüllen des Papierstreifens entlang des mittleren Bereichs.
The method according to the invention comprises the following steps:
  • Providing a flat, elongate, two- or multi-ply paper strip, the individual layers of the paper strip being connected to one another in a longitudinally extending central region at least in sections, and the individual layers of the paper strip having non-interconnected edge regions,
  • Striking the paper strip on adjacent edge regions to a strip of paper of a star-like cross-section,
  • Bursting of the paper strip along the middle area.

Gemäß dem erfindungsgemäßen Verfahren wird folglich ein flacher, länglicher, zwei- oder mehrlagiger Papierstreifen bereitgestellt. Die einzelnen Lagen des Papierstreifens sind dabei in dem sich in Längsrichtung erstreckenden mittleren Bereich wenigstens abschnittsweise miteinander verbunden. Denkbar ist, dass das Verbinden form- oder stoffschlüssig erfolgt. Insbesondere hat sich ein Verkleben der einzelnen Lagen im mittleren Bereich als besonders bevorzugt herausgestellt. Die Klebeverbindung kann dabei vorzugsweise entlang einer Linie, die sich in Längsrichtung erstreckt, verlaufen. Die Klebeverbindung kann dabei nur abschnittsweise, beispielsweise punktweise, sein. Die Klebeverbindung kann allerdings auch entlang einer geschlossenen Linie bereitgestellt werden.Thus, according to the method of the invention, a flat, elongated, two or more layer paper strip is provided. The individual layers of the paper strip are connected to each other in the longitudinally extending central region at least in sections. It is conceivable that the connection takes place positively or materially. In particular, bonding of the individual layers in the middle region has proven to be particularly preferred. The adhesive connection can be preferably along a line extending in the longitudinal direction extend. The adhesive bond can be only partially, for example, pointwise. However, the adhesive bond can also be provided along a closed line.

Die einzelnen Lagen des Papierstreifens weisen zudem nicht miteinander verbundene Randbereiche auf. Im Ausgangszustand des Papierstreifens, der flach, insbesondere flach gedrückt, sein kann, liegen benachbarte Randbereich vorzugsweise aneinander an. Bei einem zweilagigen Papierstreifen, dessen mittlerer Bereich verbunden ist, sind dann vorzugsweise vier Randbereiche vorhanden, wobei dann jeweils zwei Randbereiche im flachen Zustand aneinander anliegen. Allerdings können auch drei oder mehr Lagen vorgesehen sein. Dann sind drei oder mehr Randbereiche im flachen Zustand zueinander benachbart vorgesehen. Ein Papierstreifen, der insbesondere zwei Lagen aufweist, ist vergleichsweise einfach bereitzustellen. Dabei ist denkbar, dass erst bei Bereitstellung des Papierstreifens die einzelnen Lagen miteinander im mittleren Bereich verbunden werden oder dass bereits vor Bereitbestellung des Papierstreifens, also in einem davorliegenden Arbeitsgang, der auch an einem anderen Ort erfolgen kann, die einzelnen Lagen im mittleren Bereich miteinander verbunden werden.The individual layers of the paper strip also have non-interconnected edge regions. In the initial state of the paper strip, which may be flat, in particular pressed flat, adjacent edge regions are preferably adjacent to one another. In a two-ply paper strip whose middle region is connected, four edge regions are then preferably present, in which case two edge regions abut one another in the flat state. However, three or more layers may be provided. Then, three or more edge portions are provided adjacent to each other in the flat state. A paper strip, which in particular has two layers, is comparatively easy to provide. It is conceivable that only when providing the paper strip, the individual layers are connected to each other in the central region or that before placing the paper strip, ie in a preceding operation, which can also be done at another location, the individual layers connected to each other in the central region become.

Gemäß dem weiteren Verfahrensschritt der Erfindung werden die benachbarten, insbesondere aneinander anliegenden Randbereiche zu einem im Querschnitt sternartigen Papierstreifen aufgeschlagen. Bei einem zweilagigen Papierstreifen entsteht dann ein sternartiger Papierstreifen mit insgesamt vier abstehenden "Strahlen", wobei diese im mittleren, zentralen Bereich nach wie vor verbunden sind. Beim Vorsehen von drei Lagen, entsteht dann insbesondere ein "Stern" mit sechs "Strahlen"; bei Vorsehen von mehr Lagen, ein "Stern" mit entsprechend mehr "Strahlen".According to the further method step of the invention, the adjacent, in particular abutting edge regions are opened to a cross-section star-like paper strip. A two-ply strip of paper then forms a star-like strip of paper with a total of four protruding "rays", these still being connected in the central, central area. When providing three layers, then arises in particular a "star" with six "rays"; when providing more layers, a "star" with correspondingly more "rays".

Die jeweils benachbarten Strahlen schließen dabei vorzugsweise einen Winkel im Bereich von 60° bis 120° und vorzugsweise im Bereich von 70° bis 100° und weiter vorzugsweise im Bereich von 85° bis 95° ein.The respective adjacent beams preferably include an angle in the range of 60 ° to 120 ° and preferably in the range of 70 ° to 100 ° and more preferably in the range of 85 ° to 95 °.

Im nächsten Verfahrensschritt wird dann der Papierstreifen wenigstens entlang des mittleren Bereichs geknüllt. Das Knüllen erfolgt dabei in Längsrichtung wenigstens entlang des mittleren Bereichs derart, dass Abschnitte des mittleren Bereichs aufeinander zu bewegt oder geschoben werden, so dass die Länge des Papierstreifens im geknüllten Zustand, also des Polsterungserzeugnisses, kürzer ist als der Papierstreifen im ungeknüllten Zustand. Dadurch ergibt sich auch eine größere Rückstellelastizität in Längsrichtung des geknüllten Papierstreifens im Vergleich zum nicht geknüllten Papierstreifen.In the next method step, the paper strip is then crumpled at least along the central region. The crumpling takes place in the longitudinal direction at least along the central region such that portions of the central region are moved toward one another or pushed so that the length of the paper strip in the crumpled state, ie the padding product, is shorter than the paper strip in the uncrowned state. This also results in a greater restoring elasticity in the longitudinal direction of the crumpled paper strip in comparison to the non-crumpled paper strip.

Das Aufschlagen der benachbarten Randbereiche des Papierstreifens kann dabei vorzugsweise über einen oder mehrere Aufschlagkerne erfolgen, über welche der Papierstreifen bewegt wird. Das Bewegen des Papierstreifens über die Aufschlagkerne kann dabei vorzugsweise maschinell mittels eines Antriebs erfolgen. Insbesondere ist denkbar, dass im mittleren Bereich des Papierstreifens am Papierstreifen Antriebsrollen angreifen, die den Papierstreifen bewegen.The striking of the adjacent edge regions of the paper strip can preferably take place via one or more impact cores, over which the paper strip is moved. The moving of the paper strip on the impact cores can preferably be done mechanically by means of a drive. In particular, it is conceivable that attack in the central region of the paper strip on the paper strip drive rollers that move the paper strip.

Das Knüllen kann gemäß der Erfindung mit einem ersten Satz Antriebsrollen und einem zweiten Satz Antriebsrollen derart erfolgen, dass sich der zweite Satz Antriebsrollen mit einer Winkelgeschwindigkeit dreht, die geringer ist als die Winkelgeschwindigkeit des ersten Satzes Antriebsrollen. Über derartige Antriebsrollen kann der Papierstreifen nicht nur über Aufschlagkerne bewegt werden; auch ein Knüllen entlang der Längsrichtung im mittleren Bereich kann dadurch bereitgestellt werden. Je nachdem, wie groß die Differenz der Winkelgeschwindigkeiten der beiden Sätze von Antriebsrollen ist, kann ein mehr oder weniger starkes Knüllen des Papierstreifens erfolgen.Crumpling may be done in accordance with the invention with a first set of drive rollers and a second set of drive rollers such that the second set of drive rollers rotate at an angular velocity less than that Angular velocity of the first set of drive rollers. About such drive rollers, the paper strip can be moved not only on impact cores; also crumpling along the longitudinal direction in the central region can be provided thereby. Depending on how large the difference in the angular velocities of the two sets of drive rollers, a more or less strong crumpling of the paper strip can take place.

Zur jeweiligen Einstellung einer vorgesehenen Länge des Polsterungserzeugnisses ist vorteilhaft, wenn ein Abtrennen des Polsterungserzeugnisses in zwei Bereiche durch Abbremsen oder Anhalten des ersten Satzes Antriebsrollen erfolgt, während der zweite Satz Antriebsrollen weiter angetrieben wird. Vorteilhafterweise werden die beiden Bereiche durch Auseinanderreißen voneinander getrennt. In diesem Zusammenhang ist es vorteilhaft, wenn der Papierstreifen quer zur Längsrichtung verlaufende Solltrennstellen, insbesondere in Form von Perforierungen, aufweist.For respective adjustment of an intended length of the padding product is advantageous if a separation of the padding product in two areas by braking or stopping the first set of drive rollers, while the second set of drive rollers is driven further. Advantageously, the two areas are separated by tearing apart. In this context, it is advantageous if the paper strip transversely to the longitudinal direction extending predetermined separation points, in particular in the form of perforations having.

Die angesprochene Aufgabe wird auch durch eine Vorrichtung zur Herstellung eines Polsterungserzeugnisses, insbesondere zur Durchführung des erfindungsgemäßen Verfahrens, nach den Merkmalen des Anspruchs 5 gelöst. Eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 ist dabei aus der US 2009/082187 A1 vorbekannt. Eine derartige Vorrichtung umfasst einen Eintrittsbereich für einen flachen, länglichen zwei- oder mehrlagigen Papierstreifen. Der Papierstreifen als solcher ist dabei derart ausgebildet - und das ist nicht aus der US 2009/082187 A1 vorbekannt-, dass die einzelnen Lagen des Papierstreifens in einem sich in Längsrichtung erstreckenden mittleren Bereich wenigstens abschnittsweise miteinander verbunden sind und die einzelnen Lagen des Papierstreifens nicht miteinander verbundene Randbereiche aufweisen. Die Vorrichtung sieht ferner vor einen Aufschlagkern zum Aufschlagen des flachen Papierstreifens entlang benachbarter Randbereiche zu einem im Querschnitt sternartigen Papierstreifen. Die Vorrichtung sieht weiterhin vor, einen Vorschubmechanismus zum Bewegen der Randbereiche über den wenigstens einen Aufschlagkern und einen Knüllmechanismus zum Knüllen des Papierstreifens entlang des mittleren Bereichs. Der Eintrittsbereich, der Aufschlagkern, der Vorschubmechanismus und der Knüllmechanismus sind dabei vorzugsweise so ausgebildet, dass das im Vorhergehenden beschriebene erfindungsgemäße Verfahren mit der Vorrichtung durchführbar ist.The object mentioned is also achieved by a device for producing a padding product, in particular for carrying out the method according to the invention, according to the features of claim 5. A device according to the preamble of claim 1 is from the US 2009/082187 A1 previously known. Such a device comprises an entry region for a flat, elongate two- or multi-ply paper strip. The paper strip as such is designed in this way - and that is not from the US 2009/082187 A1 vorbekannt- that the individual layers of the paper strip in a longitudinally extending central region are at least partially connected to each other and the individual layers of the paper strip not together have connected edge regions. The apparatus further provides an impact core for striking the flat paper strip along adjacent edge regions to a paper strip of a star-like cross-section. The apparatus further provides a feed mechanism for moving the edge portions over the at least one impact core and a crimping mechanism for crumpling the paper strip along the central area. The entry region, the impact core, the feed mechanism and the crumple mechanism are preferably designed so that the inventive method described above can be carried out with the device.

Vorteilhafterweise sieht die Vorrichtung wenigstens zwei einander gegenüberliegende Aufschlagkerne vor, die in Querrichtung voneinander beabstandet sind, so dass der mittlere Bereich des Papierstreifens zwischen den Aufschlagkernen hindurch bewegbar ist. Hierdurch können die Randbereiche der Lagen aufgeschlagen werden, so dass ein sternartiger Papierstreifen entsteht. Der mittlere Bereich des Papierstreifens, in welchem die einzelnen Lagen miteinander verbunden sind, kann dennoch zwischen den Aufschlagkernen hindurch bewegt werden.Advantageously, the apparatus provides at least two opposing impact cores spaced transversely from one another such that the central region of the paper strip is movable between the impact cores. As a result, the edge regions of the layers can be opened so that a star-like paper strip is formed. The middle area of the paper strip, in which the individual layers are connected to each other, can still be moved between the impact cores.

Vorteilhafterweise sind die Aufschlagkerne so ausgebildet, dass sie im Querschnitt, also quer zur Längsrichtung, aufeinander zu gerichtete Keilabschnitte aufweisen. Hierdurch kann die Entstehung eines im Querschnitt sternartigen Papierstreifens gewährleistet werden.Advantageously, the impact cores are formed so that they have in cross section, ie transversely to the longitudinal direction, directed towards each other wedge sections. As a result, the formation of a cross-section star-like paper strip can be ensured.

Ferner ist vorteilhaft, wenn die Aufschlagkerne im Längsschnitt, also in Längsrichtung, hin zum Eintrittsbereich gerichtete keilförmige Aufschlagabschnitte vorsehen. Durch diese Aufschlagabschnitte kann ein Aufschlagen des flachen Papierstreifens entlang benachbarter Randbereich so erfolgen, dass die benachbarten Randbereiche voneinander weg aufgeschlagen werden, so dass letztendlich ein im Querschnitt sternartiger Papierstreifen entsteht. Aufschlagabschnitte dienen folglich den flach ausgebildeten Papierstreifen in einen Papierstreifen zu überführen, der eine im Querschnitt sternartige Form aufweist.It is also advantageous if the impact cores provide in a longitudinal section, that is to say in the longitudinal direction, wedge-shaped impact sections directed towards the entry region. These impact sections may strike the flat paper strip along adjacent edge region take place so that the adjacent edge regions are pitched away from each other, so that ultimately a cross-section star-like paper strip is formed. Serving sections thus serve to convert the flat paper strip into a strip of paper which has a star-shaped cross section.

Den Aufschlagkernen können dabei Trennelemente in Längsrichtung vorgelagert sein, welche zwischen benachbarte Randabschnitte eingreifen. Die Trennelemente dienen folglich dazu, in die benachbarten Randabschnitte, die insbesondere aufeinanderliegen, einzugreifen, um dann ein prozesssicheres Aufschlagen der Randbereiche zu gewährleisten. Die Trennelemente sind insbesondere dünn und flächig ausgebildet, und sind zudem, so wie die Aufschlagkerne, voneinander in Querrichtung beabstandet, so dass zwischen ihnen der mittlere Bereich des Papierstreifens, in dem die einzelnen Lagen miteinander verbunden sind, hindurchgeführt werden kann. Die Trennelemente können insbesondere als Trennscheiben oder Bleche ausgebildet sein und können zudem einstückig mit den Aufschlagkernen, insbesondere an den Keilspitzen der Aufschlagabschnitte, ausgebildet sein.The impact cores separating elements may be upstream in the longitudinal direction, which engage between adjacent edge portions. Consequently, the separating elements serve to intervene in the adjacent edge sections, which lie on one another, in particular, in order then to ensure a process-reliable opening of the edge areas. The separating elements are in particular made thin and flat, and moreover, like the impact cores, are spaced apart from one another in the transverse direction, so that the middle region of the paper strip in which the individual layers are connected to one another can be passed between them. The separating elements may in particular be designed as cutting discs or sheets and may also be formed integrally with the impact cores, in particular at the wedge tips of the impact portions.

Ferner ist vorteilhaft, wenn im Eintrittsbereich eine quer zur Längsrichtung verlaufende Leitrolle angeordnet ist, über welche der flache Papierstreifen geleitet wird. Dies ist dann vorteilhaft, wenn der Papierstreifen beispielsweise von einer Vorratsrolle abgerollt oder von einem Vorratsstapel abgenommen wird.It is also advantageous if in the entry region a transverse to the longitudinal direction of the guide roller is arranged, over which the flat paper strip is passed. This is advantageous if the paper strip, for example, unrolled from a supply roll or removed from a supply stack.

Der Vorschubmechanismus zum Bewegen der Randbereiche über die vorzugsweise beiden Aufschlagkerne kann von einem ersten Satz Antriebsrollen gebildet sein. Dieser erste Satz Antriebsrollen kann zwei übereinander angeordnete Rollen umfassen, die jeweils oberhalb und unterhalb des mittleren Bereichs des Papierstreifens in Längsrichtung vor dem Aufschlagkeil am Papierstreifen angreifen. Die beiden Rollen können dabei insbesondere so angeordnet sein, dass sie den Papierstreifen im Bereich zwischen den Trennelementen angreifen.The feed mechanism for moving the edge regions over the preferably two impact cores may be formed by a first set of drive rollers. This first sentence Drive rollers may comprise two superimposed rollers which respectively engage above and below the central portion of the paper strip longitudinally in front of the impact wedge on the paper strip. The two rollers can be arranged in particular so that they attack the paper strip in the region between the separating elements.

Weiterhin ist vorteilhaft, wenn der Knüllmechanismus von einem mit dem ersten Satz Antriebsrollen zusammenwirkenden zweiten Satz Antriebsrollen derart gebildet wird, dass der zweite Satz Antriebsrollen mit einer Winkelgeschwindigkeit drehbar ist, die geringer ist, als die Winkelgeschwindigkeit, mit der der erste Satz Antriebsrollen drehbar ist. Damit kann über den ersten Satz Antriebsrollen der Papierstreifen bewegt werden; mit dem zweiten Satz Antriebsrollen kann ein Knüllen des Papierstreifens erreicht werden.Furthermore, it is advantageous if the crumpling mechanism is formed by a second set of drive rollers cooperating with the first set of drive rollers such that the second set of drive rollers is rotatable at an angular speed which is less than the angular speed with which the first set of drive rollers is rotatable. This can be moved over the first set of drive rollers of the paper strip; with the second set of drive rollers, a crumpling of the paper strip can be achieved.

Der zweite Satz Antriebsrollen kann dabei zwei übereinander angeordnete Rollen umfassen, die oberhalb und unterhalb des mittleren Bereichs des Papierstreifens in Längsrichtung im Bereich zwischen oder nach den Aufschlagkeilen am Papierstreifen angreifen. Vorteilhaft ist folglich, wenn der erste Satz Antriebsrollen im Bereich vor dem Aufschlagkeil am Papierstreifen angreift und der zweite Satz Antriebsrollen im Bereich zwischen oder nach den Aufschlagkeilen am Papierstreifen angreift.The second set of drive rollers may comprise two superimposed rollers which engage above and below the central region of the paper strip in the longitudinal direction in the area between or after the impact wedges on the paper strip. It is therefore advantageous if the first set engages drive rollers in the area in front of the impact wedge on the paper strip and the second set engages drive rollers in the region between or after the impact wedges on the paper strip.

Weiter ist vorteilhaft, wenn der erste Satz Antriebsrollen und der zweite Satz Antriebsrollen derart antreibbar sind, dass zum Trennen des Polsterungserzeugnisse in zwei Bereich der erste Satz Antriebsrollen abbremsbar oder anhaltbar ist und der zweite Satz Antriebsrollen weiter antreibbar ist. Dadurch kann auf einfache Art und Weise ein Trennen des Polsterungserzeugnisses durch die beiden Sätze von Antriebsrollen, die ein Knüllen bewerkstelligen, erzielt werden.It is also advantageous if the first set of drive rollers and the second set of drive rollers can be driven in such a way that the first set of drive rollers can be braked or stopped to separate the padding products into two areas and the second set of drive rollers can continue to be driven. This can be a simple way of separating the Upholstery product by the two sets of drive rollers, which accomplish a crumple, can be achieved.

Die eingangs genannte Aufgabe wird auch gelöst durch ein Polsterungserzeugnis, das insbesondere nach einem erfindungsgemäßen Verfahren hergestellt ist und/oder das insbesondere mit einer erfindungsgemäßen Vorrichtung hergestellt ist. Ein derartiges Polsterungserzeugnis ist hergestellt aus einem länglichen, zwei- oder mehrlagigen Papierstreifen - was aus der US 2009/082187 A1 schon bekannt ist -, wobei die einzelnen Lagen in einem sich in Längsrichtung erstreckenden mittleren Bereich wenigstens abschnittsweise miteinander verbunden sind und wobei die einzelnen Lagen nicht miteinander verbundene Randbereiche aufweisen - und das ist nicht aus der US 2009/082187 A1 bekannt. Ferner ist neu gegenüber der US 2009/082187 A1 , dass die benachbarten Randbereiche sternartig aufgeschlagen sind und der Papierstreifen zumindest entlang des mittleren Bereichs geknüllt ist. Ein derartiger Papierstreifen lässt sich auf einfache Art und Weise herstellen und weist dennoch positive Polsterungseigenschaften auf.The above-mentioned object is also achieved by a padding product, which is produced in particular by a method according to the invention and / or which is produced in particular with a device according to the invention. Such a padding product is made of an elongated, two- or multi-ply paper strip - what the US 2009/082187 A1 is already known -, wherein the individual layers are at least partially connected to each other in a longitudinally extending central region and wherein the individual layers have not interconnected edge regions - and that is not from the US 2009/082187 A1 known. Furthermore, it is new to the US 2009/082187 A1 in that the adjacent edge regions are struck star-like and the paper strip is crumpled at least along the middle region. Such a paper strip can be produced in a simple manner and yet has positive padding properties.

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung zu entnehmen, anhand derer ein Ausführungsbeispiel der Erfindung näher beschrieben und erläutert ist.Further advantages and advantageous embodiments of the invention will become apparent from the following description, with reference to which an embodiment of the invention is described and explained in detail.

Es zeigen:

  • Figur 1 einen flachen Papierstreifen zur Herstellung eines erfindungsgemäßen Polsterungserzeugnisses in perspektivischer Ansicht;
  • Figur 2 den Papierstreifen nach Figur 1 in Draufsicht;
  • Figur 3 eine perspektivische Ansicht einer erfindungsgemäßen Vorrichtung zum Herstellen eines Polsterungserzeugnisses;
  • Figur 4 die Vorrichtung nach Figur 3 in Seitenansicht;
  • Figur 5 die Vorrichtung nach Figur 3 und 4 im Schnitt entlang der Linie V in Figur 4 und
  • Figur 6 ein erfindungsgemäßes Polsterungserzeugnis.
Show it:
  • FIG. 1 a flat strip of paper for producing a padding product according to the invention in a perspective view;
  • FIG. 2 after the paper strip FIG. 1 in plan view;
  • FIG. 3 a perspective view of an apparatus according to the invention for producing a padding product;
  • FIG. 4 the device after FIG. 3 in side view;
  • FIG. 5 the device after FIG. 3 and 4 in section along the line V in FIG. 4 and
  • FIG. 6 a padding product according to the invention.

Der in den Figuren 1 und 2 gezeigte Papierstreifen 10 weist zwei Lagen 12 und 14 auf. Die beiden Lagen 12, 14 liegen aufeinander und haben identische Außenkonturen. Sie haben ein längliches Format, wobei deren Mittellängsachse mit dem Bezugszeichen 16 gekennzeichnet ist. Bei dem Papierstreifen 10 kann es sich um einen "endlos"-langen Papierstreifen handeln, der beispielsweise von einer Rolle abrollbar ist oder von einem Stapel abnehmbar ist.The in the Figures 1 and 2 shown paper strip 10 has two layers 12 and 14. The two layers 12, 14 lie on each other and have identical outer contours. They have an elongated format, wherein the central longitudinal axis is designated by the reference numeral 16. The paper strip 10 may be an "endless" length of paper strip which can be unrolled, for example, from a roll or is removable from a stack.

Die beiden Lagen 12, 14 sind in ihrem mittleren Bereich 18, der bei dem in Figuren 1 und 2 dargestellten Papierstreifen entlang der Mittellängsachse 16 verläuft, miteinander verbunden. Vorzugsweise sind die beiden Lagen 12, 14 entlang der Mittellängsachse 16 stoffschlüssig, insbesondere durch Kleben, miteinander verbunden.The two layers 12, 14 are in their central region 18, which in the in Figures 1 and 2 shown paper strip along the central longitudinal axis 16 extends, connected to each other. Preferably, the two layers 12, 14 along the central longitudinal axis 16 cohesively, in particular by gluing, connected to each other.

Die beiden Lagen 12, 14 weisen zudem nicht miteinander verbundene Randbereiche 20, 21 und 22, 23 auf. Die Lage 12 weist also die beiden Randbereiche 20, 21 auf. Die Lage 14 weist die beiden Randbereiche 22, 23 auf. Der Randbereich 20 der Lage 12 ist dabei benachbart zum Randbereich 22 der Lage 14 angeordnet. Ebenso ist der Randbereich 21 der Lage 12 benachbart zum Randbereich 23 der Lage 14 angeordnet. In dem in Figur 1 und 2 gezeigten flachen Zustand des Papierstreifens 10 können sich die Randbereiche 20 und 22 sowie die Randbereiche 21 und 23 gegenseitig berühren. Diese Randbereiche 20, 21, 22, 23 werden dann, wie weiter unten beschrieben, zu Strahlen 26 aufgeschlagen. Wie insbesondere aus Figur 2 deutlich wird, weist der Papierstreifen 10 quer zur Längsachse 16 verlaufende Solltrennbereiche 24 auf, die als in den Lagen 20 und 22 vorgesehene Perforierungen ausgebildet sind. Hierdurch kann der Papierstreifen 10 in zwei Bereiche, entlang einer Solltrennstelle 24, durch Abreißen in Längsrichtung getrennt werden.The two layers 12, 14 also have not interconnected edge regions 20, 21 and 22, 23. The layer 12 thus has the two edge regions 20, 21. The layer 14 has the two edge regions 22, 23. The edge region 20 of the layer 12 is arranged adjacent to the edge region 22 of the layer 14. Similarly, the edge region 21 of the layer 12 adjacent to the edge region 23 of the layer 14 is arranged. In the in FIGS. 1 and 2 shown flat state of the paper strip 10, the edge regions 20 and 22 and the edge regions 21 and 23 can touch each other. These edge regions 20, 21, 22, 23 are then turned into beams 26, as described below. As in particular from FIG. 2 becomes clear, the paper strip 10 transverse to the longitudinal axis 16 extending predetermined separation regions 24, which are formed as provided in the layers 20 and 22 perforations. In this way, the paper strip 10 can be separated into two areas, along a predetermined separation point 24, by tearing in the longitudinal direction.

In der Figur 3 ist der Papierstreifen 10 dargestellt, wie er zu einem Polsterungserzeugnis umgeformt wird. Dazu findet die in Figur 3 dargestellte Vorrichtung 50 Verwendung. Die Vorrichtung 50 umfasst einen Eintrittsbereich 52, in dem eine quer zur entlang der Mittellängsachse 16 des Papierstreifens 10 verlaufenden Längsrichtung 54 angeordnete Leitrolle 56 vorgesehen ist. Die Leitrolle 56 ist dabei um eine Drehachse 58 drehbar angeordnet, und zwar derart, dass der endlose Papierstreifen 10 über die Leitrolle 56 im Betrieb der Vorrichtung 50 gelenkt wird.In the FIG. 3 the paper strip 10 is shown as it is converted into a padding product. In addition finds the in FIG. 3 illustrated device 50 use. The device 50 comprises an inlet region 52, in which a guide roller 56 is arranged which is arranged transversely to the longitudinal direction 54 running along the central longitudinal axis 16 of the paper strip 10. The guide roller 56 is rotatably arranged about a rotation axis 58, in such a way that the endless paper strip 10 is guided via the guide roller 56 during operation of the device 50.

Die Vorrichtung 50 umfasst ferner zwei Aufschlagkerne 58 zum Aufschlagen des flachen Papierstreifens 10 zu einem im Querschnitt sternartigen Papierstreifen 10'. Die Vorrichtung 50 umfasst ferner einen Austrittsbereich 60, in dem der sternartig aufgeschlagene Papierstreifen 10' deutlich zu erkennen ist.The device 50 further comprises two impact cores 58 for impacting the flat paper strip 10 to a cross-sectionally star-shaped paper strip 10 '. The device 50 further comprises an exit region 60 in which the star-like opened paper strip 10 'can be clearly seen.

Ferner umfasst die Vorrichtung 50 einen Vorschubmechanismus 62 zum Bewegen des Papierstreifens 10 in der Vorrichtung 50 sowie einen Knüllmechanismus 64 zum Knüllen des Papierstreifens 10 beziehungsweise 10' entlang des mittleren Bereichs 18.Furthermore, the apparatus 50 comprises a feed mechanism 62 for moving the paper strip 10 in the device 50 and a crumpling mechanism 64 for crumpling the paper Paper strip 10 and 10 'along the central area 18th

Wie aus Figur 3 und 5 deutlich wird, liegen die Aufschlagkerne 58 einander gegenüber und sind in Querrichtung, also senkrecht zur Längsrichtung 54, um das Maß a voneinander beabstandet. Das Maß a ist dabei so gewählt, dass der mittlere Bereich 18 des Papierstreifens 10, also der Bereich in dem die beiden Lagen 12 und 14 miteinander verbunden sind, zwischen den beiden Aufschlagkernen 58 hindurch bewegbar ist. Aus insbesondere Figur 5 wird deutlich, dass die beiden Aufschlagkerne 58 im Querschnitt aufeinander zu gerichtete Keilabschnitte 66 aufweisen. Die beiden Keilabschnitte schließen dabei einen Winkel von ca. 75° ein.How out FIG. 3 and 5 becomes clear, the impact cores 58 are opposite to each other and are in the transverse direction, ie perpendicular to the longitudinal direction 54, spaced by the dimension a from each other. The dimension a is chosen such that the central region 18 of the paper strip 10, ie the region in which the two layers 12 and 14 are connected to each other, is movable between the two impact cores 58. In particular FIG. 5 It is clear that the two impact cores 58 have wedge sections 66 directed towards one another in cross-section. The two wedge sections enclose an angle of about 75 °.

Aus Figur 3 und 4 wird zudem deutlich, dass die Aufschlagkerne 58 im Längsschnitt hin zum Eintrittsbereich 52 keilförmig ausgebildete Aufschlagabschnitte 68 vorsehen. Im Betrieb der Vorrichtung 50 wird der Papierstreifen 10 in den Randbereichen 20, 21, 22, 23 entlang den Aufschlagabschnitten 68 aufgeschlagen.Out FIG. 3 and 4 In addition, it becomes clear that the impact cores 58 provide wedge-shaped impact sections 68 in a longitudinal section towards the inlet region 52. During operation of the device 50, the paper strip 10 is hit in the edge regions 20, 21, 22, 23 along the impact sections 68.

Um ein sicheres Aufschlagen der Randbereiche 20, 21, 22, 23 zu gewährleisten, sind entgegen der Längsrichtung 54 den Aufschlagkernen 68 Trennelementen 70, die insbesondere in Figur 3 und 4 deutlich zu erkennen sind, vorgelagert. Die Trennelemente 70 sind als Trennbleche ausgebildet und sind bei dem in den Figuren gezeigten Ausführungsbeispiel einstückig mit den Aufschlagkernen 58 ausgebildet. An den den Aufschlagabschnitten 68 fern liegenden Endbereichen 72 greifen die Trennelemente 70 zwischen die einander benachbarten Randbereiche 20 und 22 beziehungsweise 21 und 23 des Papierstreifens 10, so dass die Randbereiche 20, 21 und 22, 23 im Betrieb der Vorrichtung von den Aufschlagkernen 58 sicher aufgeschlagen werden können. Der Vorschubmechanismus 62 umfasst einen ersten Satz Antriebsrollen 74, 76, die in Figur 3 und 4 deutlich dargestellt sind. Die Antriebsrollen 74, 76 sind übereinander angeordnet und greifen jeweils oberhalb und unterhalb des mittleren Bereichs 18 des Papierstreifens 10 am Papierstreifen 10 an. Bei der Ausführungsform gemäß den Figuren wird die Antriebsrolle 76 von einem Motor 78 über einen Keilriemen 80 angetrieben. Die Rolle 74 ist unter geringer Vorspannung gegen die Rolle 76 beaufschlagt, so dass diese von der Rolle 76 mit angetrieben wird. Wie erwähnt, befindet sich zwischen den Rollen 74 und 76 der mittlerer Bereich 18 des Papierstreifens 10, was aus Figur 3 deutlich wird.In order to ensure a safe impact of the edge regions 20, 21, 22, 23, opposite to the longitudinal direction 54 of the impact cores 68 separating elements 70, in particular in FIG. 3 and 4 clearly visible, upstream. The separating elements 70 are designed as separating plates and are integrally formed with the impact cores 58 in the embodiment shown in the figures. At the end portions 72 which are remote from the impact portions 68, the separating elements 70 engage between the mutually adjacent edge regions 20 and 22 or 21 and 23 of the paper strip 10 so that the edge regions 20, 21 and 22, 23 move away from the device during operation Impact cores 58 can be safely pitched. The feed mechanism 62 includes a first set of drive rollers 74, 76 which are in FIG. 3 and 4 are clearly shown. The drive rollers 74, 76 are arranged one above the other and each engage above and below the central region 18 of the paper strip 10 on the paper strip 10. In the embodiment according to the figures, the drive roller 76 is driven by a motor 78 via a V-belt 80. The roller 74 is biased against the roller 76 so that it is driven by the roller 76 with low bias. As mentioned, located between the rollers 74 and 76 of the central region 18 of the paper strip 10, which is made FIG. 3 becomes clear.

Zum Knüllen des Papierstreifens 10 entlang des mittleren Bereichs ist ein zweiter Satz Antriebsrollen 82, 84 vorgesehen, der in Längsrichtung 54 dem ersten Antriebssatzrollen 74, 76 nachgelagert ist. Entsprechend dem ersten Satz Antriebsrolle 74, 76 ist beim zweiten Satz Antriebsrollen 82, 84 ebenfalls die untere Rolle 84 über einen weiteren Elektromotor 78 angetrieben und zwar über einen weiteren Keilriemen 80. Die obere Rolle 82 ist unter Vorspannung gegen die untere Rolle 84 getrennt, so dass diese bei Drehen der Rolle 84 mit dreht.For crumpling the paper strip 10 along the middle region, a second set of drive rollers 82, 84 is provided, which is located downstream of the first drive set rollers 74, 76 in the longitudinal direction 54. Corresponding to the first set of drive rollers 74, 76, the second set of drive rollers 82, 84 also drives the lower roller 84 via another electric motor 78 via another V-belt 80. The upper roller 82 is biased against the lower roller 84, thus that this rotates when turning the roller 84 with.

Wie aus insbesondere Figur 4 deutlich wird, befindet sich der erste Satz Antriebsrollen 74, 76 in Längsrichtung 54 vor den Aufschlagkernen 58, und zwar im Bereich zwischen den beiden Trennelementen 70. Wie ebenfalls aus Figur 4 deutlich wird, befindet sich der zweite Satz Antriebsrollen 82, 84 im Bereich zwischen den beiden Aufschlagkernen 54. Aus Figur 5 wird deutlich, dass die Antriebsrollen 82, 84, sowie die Antriebsrollen 74, 76 eine Breite b aufweisen die geringfügig kleiner ist als der Abstand a zwischen den Aufschlagkernen 58.How out, in particular FIG. 4 is clear, is the first set of drive rollers 74, 76 in the longitudinal direction 54 in front of the impact cores 58, in the area between the two separating elements 70. As also out FIG. 4 becomes clear, is the second set of drive rollers 82, 84 in the area between the two impact cores 54. Off FIG. 5 It is clear that the drive rollers 82, 84, and the drive rollers 74, 76 have a width b the is slightly smaller than the distance a between the impact cores 58.

Die Winkelgeschwindigkeit der Rollen 82, 84 des zweiten Antriebssatzes ist dabei so wählbar, dass sie geringfügig geringer ist als die Winkelgeschwindigkeit der Antriebsrollen 74, 76 des ersten Satzes. Dadurch wird ein Knüllen des Papierstreifens 10 im mittleren Bereich 18 in einer Knüllzone 86 bewirkt, wobei die Knüllzone 86 zwischen den beiden Sätzen von Rollen 74, 76 und 82, 84 liegt. Der Papierstreifen 10 verlässt folglich die Vorrichtung im Austrittsbereich 60 als Polsterungserzeugnis, das zum einen sternartig aufgeschlagen ist und zum anderen insbesondere mittleren Bereich geknüllt ist. Anzumerken ist, dass in Figuren 3 und 4 die Rollen 74, 76 und 82, 84 mit gleicher Winkelgeschwindigkeit drehen, so dass der Papierstreifen 10' hier nicht geknüllt ist. Der die Vorrichtung 50 verlassende Papierstreifen 10' weist folglich den mittleren Bereich 18 auf, der zwischen den Rollen 72, 74 und 82, 84 hindurch geführt wird. An diesem Bereich 18 schließen sich die mittels den Kernen 58 sternartig aufgeschlagene Randbereiche 20, 21, 22, 23, also die vier "Strahlen" 26 des aufgeschlagenen Papierstreifens 10', an. Der mittlere Bereich 18 weist dabei eine Breite auf, die der Breite b entspricht. Denkbar ist, die Breite b auf die ein sehr geringes Maß beziehungsweise eine Linie zu reduzieren. Zum Knüllen wird, wie beschrieben, die Winkelgeschwindigkeit der Rollen 74, 76 erhöht beziehungsweise die der Rollen 82, 84 gesenkt.The angular velocity of the rollers 82, 84 of the second drive set is so selected that it is slightly less than the angular velocity of the drive rollers 74, 76 of the first set. This causes crumpling of the paper strip 10 in the central region 18 in a crimping zone 86, with the crimping zone 86 between the two sets of rollers 74, 76 and 82, 84. The paper strip 10 thus leaves the device in the exit region 60 as a padding product, which is opened in a star-like manner and, on the other hand, in particular in the middle region. It should be noted that in Figures 3 and 4 the rollers 74, 76 and 82, 84 rotate at the same angular velocity, so that the paper strip 10 'is not crumpled here. The paper strip 10 'leaving the device 50 thus has the central area 18 which is guided between the rollers 72, 74 and 82, 84. The edge regions 20, 21, 22, 23, which are struck star-like by means of the cores 58, that is to say the four "beams" 26 of the opened paper strip 10 ', adjoin this region 18. The central region 18 has a width which corresponds to the width b. It is conceivable to reduce the width b to a very small measure or a line. For crumpling, as described, the angular velocity of the rollers 74, 76 is increased or that of the rollers 82, 84 lowered.

Wie beschrieben, kann ein derartiges Polsterungserzeugnis auf einfache Art und Weise hergestellt werden, wobei es zudem günstige Polsterungseigenschaften aufweist.As described, such a padding product can be easily manufactured while also having favorable cushioning properties.

Obwohl in den Figuren ein Papierstreifen 10 dargestellt ist, der lediglich zwei Lagen aufweist, ist denkbar, dass auch ein Papierstreifen Verwendung findet, der drei oder mehr Lagen aufweist. Die drei oder mehr Lagen sind dann im mittleren Bereich 18, beziehungsweise vorzugsweise im Bereich der Mittellängsachse 16, miteinander verbunden. Anstelle von zwei einander gegenüberliegenden Aufschlagkernen 58 finden dann vorteilhafterweise insgesamt vier oder mehr Aufschlagkerne Verwendung, die in die Zwischenräume zwischen den jeweils benachbarten Randbereichen der jeweiligen Lagen eingreifen.Although in the figures, a paper strip 10 is shown, which has only two layers, it is conceivable that a paper strip is used which has three or more layers. The three or more layers are then connected to each other in the central region 18, or preferably in the region of the central longitudinal axis 16. Instead of two opposing impact cores 58 are then advantageously a total of four or more impact cores use, which engage in the spaces between the respective adjacent edge regions of the respective layers.

Zum Trennen des endlos langen Papierstreifens 10 in unterschiedliche Bereiche ist vorteilhaft, wenn der erste Satz Antriebsrollen 74, 76 abgebremst wird, wobei der zweite Satz Antriebsrollen 82, 84 weiter angetrieben wird, so dass ein Abreißen entlang eines in Figur 1 und 2 dargestellten Solltrennbereichs erfolgt.For separating the endlessly long paper strip 10 into different areas is advantageous when the first set of drive rollers 74, 76 is decelerated, wherein the second set of drive rollers 82, 84 is further driven, so that a tearing along a in FIGS. 1 and 2 shown target separation area takes place.

In Figur 6 ist ein mit der Vorrichtung 50 hergestellter geknüllter Papierstreifen 10", also das fertige Polsterungserzeugnis 88, gezeigt. Deutlich zu erkennen ist der geknüllte mittlere Bereich 18 mit seiner Breite b, an den sich die Randbereiche 20, 21, 22, 23 beziehungsweise die Strahlen 26 anschließen.In FIG. 6 1, a crumpled paper strip 10 ", ie the finished upholstery product 88, produced with the device 50. The crumpled middle region 18 with its width b, against which the edge regions 20, 21, 22, 23 and the rays 26, respectively, can be clearly seen connect.

Claims (17)

  1. Method for manufacturing a cushioning product (88), characterised by the following steps:
    - provision of a flat, elongated paper strip (10) having two or more layers, at least portions of the individual layers (12, 14) of the paper strip (10) being connected together in a central region (18) extending in the longitudinal direction and the individual layers (12, 14) of the paper strip (10) having edge regions (20, 21, 22, 23) which are not connected together,
    - spreading apart of adjacent edge regions (20, 21, 22, 23) to form a paper strip (10) which is stellate in cross-section.
    - crumpling of the paper strip (10) along the central region (18).
  2. Method according to claim 1, characterised in that the spreading apart is performed in such a way that the paper strip (10) is moved over one or more spreader cores (58).
  3. Method according to claim 1 or 2, characterised in that the crumpling is performed by means of a first set of drive rollers (74, 76) and a second set of drive rollers (82, 84) in such a way that the second set of drive rollers (82, 84) turns at an angular velocity which is lower than the angular velocity of the first set of drive rollers (74, 76).
  4. Method according to claim 3, characterised in that separation of the cushioning product (88) into two regions is performed by braking or stopping the first set of drive rollers ((74, 76) while the second set of drive rollers (82, 84) continues to be driven.
  5. Apparatus (50) for manufacturing a cushioning product (88), having an input region (52) for a flat, elongated paper strip (10) having two or more layers, at least portions of the individual layers (12, 14) of the paper strip being connected together in a central region (18) extending in the longitudinal direction and the individual layers (12, 14) of the paper strip (10) having edge regions (20, 21, 22, 23) which are not connected together, the apparatus (50) also having a crumpling mechanism (64) for crumpling the paper strip (10') along the central region (18), characterised in that there are provided at least one spreader core (58) for spreading apart the flat paper strip (10) along adjacent edge regions (20, 21, 22, 23) into a paper strip (10) of stellate cross-section, and a feeding mechanism (62) for moving the edge regions (20, 21, 22, 23) over the at least one spreader core (58).
  6. Apparatus (50) according to claim 5, characterised in that there are provided at least two spreader cores (58) situated opposite one another which are spaced apart from one another in the transverse direction, the central region (18) of the paper strip (10) thus being able to be moved through between the spreader cores (58).
  7. Apparatus (50) according to claim 6, characterised in that the two spreader cores (58) have wedge-shaped portions (66) which point towards one another in cross-section.
  8. Apparatus (50) according to claim 6 or 7, characterised in that the spreader codes (58) provided wedge-shaped portions (68) which point towards the input region (52) in longitudinal section.
  9. Apparatus (50) according to claim 6, 7 or 8, characterised in that positioned in front of the spreader cores (58) there are separating members (70) which engage between adjacent edge regions (20, 21, 22, 23).
  10. Apparatus (50) according to one of claims 5 to 9, characterised in that provided in the input region (52) there is a guide roller arranged to extend transversely to the longitudinal direction (56), by means of which the paper strip (10) is guided.
  11. Apparatus (50) according to one of claims 5 to 10, characterised in that the feed mechanism (62) is formed by a first set of drive rollers (74, 76).
  12. Apparatus (50) according to claim 11, characterised in that the first set of drive rollers (74, 76) comprises two rollers arranged one above the other which engage with the paper strip (10) upstream of the at least one spreader core (58) in the longitudinal direction and respectively above and below the central region (18) of the paper strip (10).
  13. Apparatus (50) according to one of claims 5 to 12, characterised in that the crumpling mechanism (64) is formed by a second set of drive rollers (82, 84) which co-operates with the first set of drive rollers (74, 76), in such a way that the second set of drive rollers (82, 84) can be turned at an angular velocity which is lower than the angular velocity at which the first set of drive rollers (74, 76) can be turned.
  14. Apparatus (50) according to claim 13, characterised in that the second set of drive rollers (82, 84) comprises two rollers arranged one above the other which engage with the paper strip (10) in the region between or upstream of the spreader wedges (58) in the longitudinal direction and above and below the central region (18) of the paper strip.
  15. Apparatus (50) according to either of claims 13 and 14, characterised in that the first set of drive rollers (74, 76) and second set of drive rollers (82, 84) can be driven in such a way that, to separate the cushioning product (88) into two regions, the first set of drive rollers (74, 76) can be braked or stopped and the second set of drive rollers (82, 84) can continue to be driven.
  16. Apparatus (50) according to one of claims 5 to 15, characterised in that it is suitable for performing the method according to one of claims 1 to 4.
  17. Cushioning product (88), in particular one manufactured by a method according to one of claims 1 to 5 and/or on an apparatus according to one of claims 6 to 16, manufactured from an elongated paper strip (10) having two or more layers, at least portions of the individual layers (12, 14) being connected together in a central region (18) extending in the longitudinal direction and the individual layers (12, 14) having edge regions (20, 21, 22, 23) which are not connected together, the adjacent edge regions (20, 21, 22, 23) being spread apart into a stellate form and the paper strip (10') being crumpled along the central region (18).
EP13192361.7A 2012-12-11 2013-11-11 Method and device for manufacturing an upholstery product part and upholstery product Active EP2743071B1 (en)

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US10766221B2 (en) 2020-09-08
US9688044B2 (en) 2017-06-27
EP2743071A3 (en) 2015-06-24
CN103862723B (en) 2017-04-12
ES2609756T3 (en) 2017-04-24
US20140162024A1 (en) 2014-06-12
BR102013031604B1 (en) 2021-03-09
CN103862723A (en) 2014-06-18
DE102012222805B3 (en) 2013-06-06
US20170274614A1 (en) 2017-09-28
PL2743071T3 (en) 2017-05-31
US20170274615A1 (en) 2017-09-28
EP2743071A2 (en) 2014-06-18
DK2743071T3 (en) 2017-01-23
US10766220B2 (en) 2020-09-08
BR102013031604A2 (en) 2014-09-02

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