EP2949598A1 - Pallet-free packaging for stacks of products - Google Patents
Pallet-free packaging for stacks of products Download PDFInfo
- Publication number
- EP2949598A1 EP2949598A1 EP15160955.9A EP15160955A EP2949598A1 EP 2949598 A1 EP2949598 A1 EP 2949598A1 EP 15160955 A EP15160955 A EP 15160955A EP 2949598 A1 EP2949598 A1 EP 2949598A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bottom layer
- product stack
- layer
- product
- packaging according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000000047 product Substances 0.000 claims description 73
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 9
- 239000006228 supernatant Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims 1
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Images
Classifications
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- 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
- B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
- B65D71/0088—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
-
- 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
- B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
- B65D2571/00006—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
- B65D2571/00012—Bundles surrounded by a film
- B65D2571/00018—Bundles surrounded by a film under tension
-
- 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
- B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
- B65D2571/00006—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
- B65D2571/00055—Clapping elements, also placed on the side
Definitions
- Stacks of product units such as individual rolls or rolls stacked on top of a tower, must be protected during shipping against the product quality-impairing influences during transport or during in-house handling.
- FIG. 2 shows a schematic structure of such a package:
- a product stack (4) is formed from individual rolls which are stacked one above the other to form a tower.
- the top and bottom of the product stack (4) are covered with so-called blanks (1) and (1a).
- the term round blanks stands for diecuts made of cardboard or plastic, which have a diameter which is equal to that of the product stack or minimal.
- the outer side (5) of the product stack (4) is wrapped during a so-called stretch process with individual layers of a highly elastic packaging film, the stretch film (2a). Care is taken to ensure that the film layers (2) formed thereby also a part of Covering the top and the bottom of the product stack (4), starting from the edge at the transition from the outside (5) to the top or bottom.
- overstretching This coverage is usually referred to as "overstretching" (6).
- a further mode of operation to be taken from the prior art is the use of round blanks as a base layer, which have tabs protruding in a star shape from the base surface. These tabs are folded during the stretch process at the edge between the outside and the bottom of the product stack (4), thereby contributing to further securing the blank on the bottom.
- the disadvantage here is that the Umfalzung is possible only to a certain extent. If, in the case described, the diameter of a roll increases, then the underside is no longer completely covered by the round blank and the product is exposed between the cut-in tabs. Dirt is the result.
- a method for producing a packaging according to the invention is mentioned in claim 10.
- the packaging according to the invention is based on the idea of using a mechanically stable and nevertheless flexible material (3a) as the base layer (3) instead of the usual rigid cardboard or plastic fronts.
- the diameter or the edge length of the bottom layer (3) is deliberately chosen to be larger than the diameter to be covered or the edge length of the side to be covered.
- a projection (7) is produced analogously to the overstretch (6) of the stretch film (2a) projecting into the upper or lower surface (3), which protrudes into the outer side (5) of the product stack (4).
- the length of the protrusion (7) projecting into the outside (4) is to be selected as a function of the flexibility of the material (3a) used for the bottom layer (3).
- FIG. 3 shows schematically the test used to determine flexibility.
- Flexibility in the sense of the present invention refers to the overhang length (12) which results on a measuring strip (15) of the material (3a) when tested according to test method "WSP 090.1.R4 (12)".
- a strip (15) of the test material (3a) of width 25 mm is covered with the measuring ruler (14) and combined with the measuring ruler (14) over the Measuring edge of the test device pushed. Due to the weight of the test strip (15) this is bent by gravity down. If a bending angle (13) of 41.5 ° is reached, the overhang length (12) on the measuring ruler (14) of the test device is read in cm and noted.
- test is carried out with test strips (15) which have been removed in the production direction, transversely to the direction of manufacture and at an angle of 45 ° to the direction of production of the material (3a) forming the bottom layer (3).
- test strip (15) must be placed on the measurement surface such that the surface of the material later forming the outside of the bottom layer (3) ( 3a) upwards and covered with the measuring ruler (14).
- Flexible materials (3a) which can be used according to the invention for the bottom layer (3) therefore have low overhang lengths.
- Inventive materials (3a) according to the test method described above have flexibilities in the range of 5 to 30 cm, preferably in the range of 8 to 20cm. Higher flexibilities present problems with the packaging methods described below, and also provide no further advantages in terms of mechanical resistance.
- the flexibility of the material (3a) forming the bottom layer (3) is of crucial importance in the production of a product stack (4) packed according to the invention.
- FIG. 4 A principle way how to produce a packaging according to the invention, it can be seen, the subsequent bottom layer (3) in the laying station (9) is first placed centered on the top of the product stack (4). Due to the flexibility of the material (3a) forming the bottom layer (3) folds the portion of the bottom layer (3) projecting beyond the edges of the product stack is independent of the edge and forms the projection (7). There are no other aids such as. Folding or air blower necessary, the folding is done purely by acting on the supernatant gravity.
- the length of the projection (7) must be at least one and a half times the determined in cm flexibility of the bottom layer 3 forming material (3a). If the supernatant (7) is lower, there will be problems with the fixation of the bottom layer (3) during the subsequent stretching. Also, then there is the danger that the floor layer (3) according to the invention is pulled out due to mechanical thrust loads during handling.
- lengths of the projection (7) are preferably in the range of twice to five times the value of the flexibility of the material (3a) forming the base layer (3).
- the product stack thus produced is fed to a commercially available stretch device (10).
- the product stack is covered with individual layers of the stretch film (2a).
- either the product stack (4) itself can be set in rotation or else the dispensing unit (10) for the stretch film (2a) rotates about the product stack (4). During rotation, the dispensing unit moves up and down several times. In this case, individual layers of stretch film (2a) are superimposed spirally one above the other and form after completion of this process in their entirety the film layers (2).
- the system is set so that the overstretch (6) results both at the upper end and at the lower end of the product stack (4).
- the packaged product stack (4) is rotated in a rotating station (11) by 180 °, so that the bottom layer (3) now comes to rest on the side facing the bottom of the product stack (4).
- Inventive materials for the bottom layer (3) usable materials (3a) have, as already shown above, a flexibility in the range of 5 to 25cm.
- the Flexibility must be present homogeneously in the material (3a). This means that the material (3a) forming the bottom layer (3) has approximately the same overhang lengths (12) in the production direction, transversely to the production direction and at an angle of 45 ° to the production direction. This property is important to achieve a uniform fold around the edges, especially with round product stacks (4).
- Suitable for the bottom layer (3) are all types of flexible, flat, waterproof and mechanically strong materials (3a) with the aforementioned properties.
- Waterproof in the sense of the present invention means that the material (3a) has a value for the water column (determined according to "WSP 080.6.R4 (12)") of greater than 1000 mm water column.
- Mechanical loadable in the sense of the present invention means that the material (3a) along or transversely to the production direction of the material (3a) has a tensile strength of greater than 200N / 25mm (determined according to "WSP 110.4.R4 (12)", option A).
- Multi-layer laminates of films with fabrics are preferred in the present invention, with laminates of films with ribbon fabrics being most preferred.
- Two-layer laminates of a ribbon fabric on one side and a film layer on the other side bring further advantages for the packaging according to the invention.
- Such structures such as under the product BE113 of Lenzing Plastics, Lenzing, Austria available, consist of a low density polyethylene film having 35 g / m 2, which is extruded by means of directly to a 78g / m 2 woven fabric of high density polyethylene and thereby was connected.
- This material has flexibilities in the production direction about 8.5 cm, transverse to the production direction of about 8.4 cm and at an angle of 45 ° to the production direction of about 8.2 cm. It was, according to the test setup FIG. 3 put the side with the ribbon fabric in the direction of the measuring ruler (14).
- Such a construction Furthermore has a mechanical resistance of 255N / 25mm in the direction of production and 330N / 25mm across the direction of production. The watertightness is greater than 3000mm / WS.
- the material (3a) is placed on the product stack (4) so that the film side faces the product stack (4) and the ribbon fabric side faces out ,
- the dimensions of the bottom layer (3) are dimensioned such that a projection (7) of the bottom layer (3) is formed at a height of 30 cm, which is 3.6 times the flexibility of the material forming the bottom layer (3). 3a) corresponds.
- the ribbon fabric increases the adhesion to surfaces such as floors, which is important for transport in the truck, for example, because the product stacks (4) are less prone to shifting. Furthermore, the risk that the bottom layer (3) is torn out, due to the increased friction. significantly reduced.
- the weft and warp threads of the ribbon fabric in the region of the overstretch (6) and the supernatant (7) form a mechanical barrier for dirt particles. Should it come to the lifting of the product stack (4), the dirt particles are retained in the structures of the ribbon fabric.
- inventively produced product stack are characterized by a high mechanical strength and therefore contribute to the reduction of transport and handling damage. They make an important contribution to sustainability and resource conservation in production and logistics.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
Abstract
Die vorliegende Erfindung handelt von einer palettenfreien Verpackung eines Produktstapels (4) bestehend aus einer Decklage (1), einer Bodenlage (3) und den Produktstapel (4) umschließenden Folienlagen (2), wobei die Folienlagen (2) die Decklage (1) und die Bodenlage (3) auf dem Produktstapel (4) fixieren, und wobei die Bodenlage (3) aus einem flexiblen Material (3a) besteht und die Bodenlage (3) die Kanten des Produktstapels (4) mit einem Überstand (7) umschließtThe present invention relates to a pallet-free packaging of a product stack (4) consisting of a cover layer (1), a bottom layer (3) and the product layers (4) enclosing film layers (2), wherein the film layers (2) the cover layer (1) and fixing the bottom layer (3) on the product stack (4), and wherein the bottom layer (3) consists of a flexible material (3a) and the bottom layer (3) encloses the edges of the product stack (4) with a projection (7)
Description
Stapel aus Produkteinheiten wie beispielsweise aus einzelnen Rollen oder auch zu einem Turm übereinandergestapelten Rollen müssen beim Versand gegen die produktqualität-beeinträchtigende Einflüsse beim Transport oder bei der innerbetrieblichen Handhabung geschützt werden.Stacks of product units, such as individual rolls or rolls stacked on top of a tower, must be protected during shipping against the product quality-impairing influences during transport or during in-house handling.
Nach dem Stand der Technik kann gemäß der
Häufig werden daher sogenannte stretchverpackte Produktstapel hergestellt.
Ein Produktstapel (4) wird aus einzelnen Rollen gebildet, die übereinander zu einem Turm gestapelt sind. Die Oberseite und die Unterseite des Produktstapels (4) werden mit sogenannten Ronden (1) und (1a) abgedeckt. Der Begriff Ronden steht dabei für Stanzlinge aus Karton oder Kunststoff, die einen Durchmesser aufweisen, der gleich dem des Produktstapels oder minimal geringer ist. Die Außenseite (5) des Produktstapels (4) wird während eines sogenannten Stretchprozesses mit einzelnen Lagen einer hochdehnfähigen Verpackungsfolie, der Stretchfolie (2a), umhüllt. Dabei wird darauf geachtet, dass die dabei gebildeten Folienlagen (2) auch einen Teil der Oberseite und der Unterseite des Produktstapels (4) ausgehend von der Kante am Übergang von der Außenseite (5) zur Ober- bzw. Unterseite überdeckt.A product stack (4) is formed from individual rolls which are stacked one above the other to form a tower. The top and bottom of the product stack (4) are covered with so-called blanks (1) and (1a). The term round blanks stands for diecuts made of cardboard or plastic, which have a diameter which is equal to that of the product stack or minimal. The outer side (5) of the product stack (4) is wrapped during a so-called stretch process with individual layers of a highly elastic packaging film, the stretch film (2a). Care is taken to ensure that the film layers (2) formed thereby also a part of Covering the top and the bottom of the product stack (4), starting from the edge at the transition from the outside (5) to the top or bottom.
Man bezeichnet diese Überdeckung üblicherweise als "Overstretch" (6). Je größer der Overstretch (6) ist, umso besser sind die Verpackungsronden (1) und (1 a) am Produktstapel (4) verankert.This coverage is usually referred to as "overstretching" (6). The greater the overstretch (6), the better the packaging blanks (1) and (1a) are anchored to the product stack (4).
Üblicherweise werden derartige Produktstapel (4) palettenfrei transportiert, sodass die Unterseite eines verpackten Produktstapels (4) durch die Bewegungsvorgänge beim Lagern, beim Verladen und ähnlichen Handhabungsvorgängen einer extremen mechanischen Belastung ausgesetzt ist. Häufig kommt es beispielsweise vor, dass ein verpackter Produktstapel (4) vom Gabelstapler nicht ausreichend hoch angehoben wird und die die Unterseite bildende Lage über den Boden geschleift wird. In der Folge wird durch diese Schubbelastung der Overstretch (6) mechanisch durch Reibung zerstört und die Übergangskante zwischen Unterseite und Außenseite freigelegt. Häufig fallen dabei auch die Ronden (1a) ab, sodass Verschmutzungen und Beschädigungen des eigentlich zu schützenden Produktes die Folge sind. Das Produkt wird dadurch unbrauchbar, da es entweder mechanisch beschädigt ist oder es verschmutzt wird und aufgrund dessen auch nicht mehr verwendbar ist.Usually, such product stacks (4) are transported pallet-free, so that the underside of a packaged product stack (4) is subjected to extreme mechanical stress as a result of the movement processes during storage, loading and similar handling operations. It often happens, for example, that a packaged product stack (4) is not lifted sufficiently high by the forklift and the layer forming the underside is dragged over the ground. As a result, the overstretch (6) is mechanically destroyed by friction and exposed the transition edge between the bottom and outside by this shear load. Frequently, the blanks (1a) also fall off, so that dirt and damage to the product actually to be protected are the result. The product is thus unusable because it is either mechanically damaged or it is dirty and therefore no longer usable.
Eine weitere, dem Stand der Technik zu entnehmende Arbeitsweise ist die Verwendung von Ronden als Bodenlage, welche über aus der Grundfläche sternförmig herausragende Laschen haben. Diese Laschen werden beim Stretchprozess an der Kante zwischen Außenseite und Unterseite des Produktstapels (4) umgefalzt und tragen dadurch zu einer weiteren Sicherung der Ronde auf der Unterseite bei. Nachteilig ist hier, dass die Umfalzung auch nur in einem bestimmten Umfang möglich ist. Vergrößert sich im beschriebenen Fall der Durchmesser einer Rolle, so kommt es dazu dass die Unterseite nicht mehr vollends von der Ronde bedeckt ist und zwischen den eingeschnitten Laschen das Produkt frei liegt. Verschmutzungen sind die Folge.A further mode of operation to be taken from the prior art is the use of round blanks as a base layer, which have tabs protruding in a star shape from the base surface. These tabs are folded during the stretch process at the edge between the outside and the bottom of the product stack (4), thereby contributing to further securing the blank on the bottom. The disadvantage here is that the Umfalzung is possible only to a certain extent. If, in the case described, the diameter of a roll increases, then the underside is no longer completely covered by the round blank and the product is exposed between the cut-in tabs. Dirt is the result.
Problematisch ist bei Verpackungen nach dem Stand der Technik auch der Umstand, dass derartig verpackte Produktstapel beim Aufnehmen vom Boden anschließenden Absetzen auf den Boden, bspw. beim Umlagern oder Versenden häufig Verschmutzungen an der Außenseite zwischen Stretchfolie und der Produktoberfläche aufweisen. Dies wird, wie in
Im Falle des Balgens wird beim Aufnehmen eines so verpackten Produktstapels (4) von der Ebene durch die dann einsetzende Balgbildung Luft über den Übergang des Overstretches (6) zur Ronde (1a) eingesaugt. Schmutzpartikel werden dabei zwangsweise mit eingesaugt. Beim Absetzen wird die zuvor eingesaugte Luft allerdings nicht wieder über diesen Weg ausgeblasen, sondern, da der Produktstapel (4) wieder auf dem Boden steht - entlang der Außenseite zwischen Stretchfolie (2) und Produktoberfläche verteilt. Auch hier wird das Produkt durch die Verschmutzungen teilweise oder komplett unbrauchbar.In the case of bellows, air is drawn in through the transition of the overstretch (6) to the blank (1a) when picking up a product stack (4) packed in this manner from the plane through the then beginning bellows formation. Dirt particles are forcibly sucked in with it. When settling the previously sucked air is not blown out again on this way, but, since the product stack (4) is back on the ground - distributed along the outside between stretch film (2) and product surface. Again, the product is partially or completely unusable due to the contamination.
Die Aufgabe der vorliegenden Erfindung war es, die genannten Nachteile des Standes der Technik zu vermeiden. Gelöst wird die Aufgabe durch die im Anspruch 1 genannten Merkmale. Sinnvolle Ausgestaltungen sind in den Unteransprüchen 2 bis 9 genannt.The object of the present invention was to avoid the mentioned disadvantages of the prior art. The problem is solved by the features mentioned in
Ein Verfahren zur Herstellung einer erfindungsgemäßen Verpackung ist in Anspruch 10 genannt.A method for producing a packaging according to the invention is mentioned in
Der erfindungsgemäßen Verpackung liegt die Idee zugrunde, anstatt der üblichen, steifen Papp- oder Kunststoffronden als Bodenlage (3) eine mechanisch stabiles und trotzdem flexibles Material (3a) zu verwenden. Dabei wird der Durchmesser oder die Kantenlänge der Bodenlage (3) bewusst größer als der zu bedeckende Durchmesser oder die Kantenlänge der abzudeckenden Seite gewählt.The packaging according to the invention is based on the idea of using a mechanically stable and nevertheless flexible material (3a) as the base layer (3) instead of the usual rigid cardboard or plastic fronts. In this case, the diameter or the edge length of the bottom layer (3) is deliberately chosen to be larger than the diameter to be covered or the edge length of the side to be covered.
Durch die Verwendung einer erfindungsgemäßen Bodenlage (3) ist es des Weiteren möglich Durchmesserunterschiede auszugleichen und der Balgbildung vorzubeugen.By using a bottom layer (3) according to the invention, it is further possible to compensate for differences in diameter and to prevent the formation of bellows.
Erfindungsgemäß wird analog zum in die Ober- oder Unterseite hineinragenden Overstretch (6) der Stretchfolie (2a) auch mit der Bodenlage (3) ein Überstand (7) erzeugt, der in die Außenseite (5) des Produktstapels (4) hineinragt.According to the invention, a projection (7) is produced analogously to the overstretch (6) of the stretch film (2a) projecting into the upper or lower surface (3), which protrudes into the outer side (5) of the product stack (4).
Die Länge des in die Außenseite (4) hineinragenden Überstands (7) ist dabei in Abhängigkeit von der Flexibilität des für die Bodenlage (3) verwendeten Materials (3a) zu wählen.The length of the protrusion (7) projecting into the outside (4) is to be selected as a function of the flexibility of the material (3a) used for the bottom layer (3).
Als Flexibilität im Sinne der vorliegenden Erfindung wird die Überhanglänge (12) bezeichnet, die sich an einem Messstreifen (15) des Materials (3a), wenn nach Testmethode "WSP 090.1.R4(12)" getestet, ergibt.Flexibility in the sense of the present invention refers to the overhang length (12) which results on a measuring strip (15) of the material (3a) when tested according to test method "WSP 090.1.R4 (12)".
Die vorstehend genannte Testmethode, wie auch die im späteren aufgezeigte "WSP 080.6.R4 (12)" und die "WSP 110.4.R4 (12)" sind erhältlich bei EDANA, Avenue Herrmann Debroux 46-B-1160, Brussels, Belgien, www.edana.org.The above test method, as well as "WSP 080.6.R4 (12)" and "WSP 110.4.R4 (12)" shown below, are available from EDANA, Avenue Herrmann Debroux 46-B-1160, Brussels, Belgium, www .edana.org.
Bei diesem Test mit einem Cantilever Biegetester, beispielsweise einem Testgerät Typ "Shirley Stiffness Tester" wird ein Streifen (15) des zu prüfenden Materials (3a) der Breite 25mm mit dem Messlineal (14) abgedeckt und mit dem Messlineal (14) zusammen über die Messkante des Testgeräts geschoben. Durch das Eigengewicht des Teststreifens (15) wird dieser durch die Schwerkraft nach unten gebogen. Wird ein Biegewinkel (13) von 41,5° erreicht, wird die Überhanglänge (12) am Messlineal (14) der Testeinrichtung in cm abgelesen und notiert.In this test with a cantilever bending tester, for example a tester type "Shirley Stiffness Tester", a strip (15) of the test material (3a) of width 25 mm is covered with the measuring ruler (14) and combined with the measuring ruler (14) over the Measuring edge of the test device pushed. Due to the weight of the test strip (15) this is bent by gravity down. If a bending angle (13) of 41.5 ° is reached, the overhang length (12) on the measuring ruler (14) of the test device is read in cm and noted.
Der Test wird mit Teststreifen (15) durchgeführt, die in Fertigungsrichtung, quer zur Fertigungsrichtung und in einem Winkel von 45° zur Fertigungsrichtung des die Bodenlage (3) bildenden Materials (3a) entnommen wurden.The test is carried out with test strips (15) which have been removed in the production direction, transversely to the direction of manufacture and at an angle of 45 ° to the direction of production of the material (3a) forming the bottom layer (3).
Sollte das zu testende Material (3a) unterschiedliche Oberflächen aufweisen, wie für die erfindungsgemäße Bodenlage (3) bevorzugt, muss der Teststreifen (15) so auf die Messoberfläche gelegt werden, dass die später die Außenseite der Bodenlage (3) bildende Oberfläche des Materials (3a) nach oben zeigt und mit dem Messlineal (14) abgedeckt wird.If the material to be tested (3a) has different surfaces, as preferred for the base layer (3) according to the invention, the test strip (15) must be placed on the measurement surface such that the surface of the material later forming the outside of the bottom layer (3) ( 3a) upwards and covered with the measuring ruler (14).
Dem Stand der Technik entsprechende Materialien, wie beispielsweise Wellpappronden der Firma Liebensteiner, Typ 1.30e bs weiß, sind mit den methodengemäß ausgerüsteten Prüfeinrichtungen nicht messbar, da sich mit diesen Prüfeinrichtungen Überhanglängen bis maximal 30cm ermitteln lassen , sich an den untersuchten Mustern bei diesem Überhang noch keinerlei Durchbiegung einstellte. Tatsächlich liegen derartige, dem Stand der Technik entsprechende Materialien bei größer 80cm.The prior art materials, such as corrugated paper probes from Liebensteiner, type 1.30e bs white, are not measurable with the test equipment equipped according to the method, since overhang lengths of up to 30 cm can be determined with these test equipment, nor on the examined samples in this overhang no deflection was set. In fact, such prior art materials are greater than 80cm.
Erfindungsgemäß für die Bodenlage (3) einsetzbare flexible Materialien (3a) weisen daher geringe Überhanglängen auf. Erfindungsgemäße Materialien (3a) haben gemäß der vorstehend beschriebenen Prüfmethode Flexibilitäten im Bereich von 5 bis 30 cm, bevorzugt im Bereich von 8 bis 20cm. Höhere Flexibilitäten geben Probleme bei Anwendung der nachfolgend beschriebenen Verpackungsmethoden und bringen auch keine Weiteren Vorteile bezüglich der mechanischen Beständigkeit.Flexible materials (3a) which can be used according to the invention for the bottom layer (3) therefore have low overhang lengths. Inventive materials (3a) according to the test method described above have flexibilities in the range of 5 to 30 cm, preferably in the range of 8 to 20cm. Higher flexibilities present problems with the packaging methods described below, and also provide no further advantages in terms of mechanical resistance.
Bei geringeren Flexibilitäten ist, wenn man im unteren Bereich des erfindungsgemäßen Überstands (7) arbeitet, die Gefahr, dass die Bodenlage (3) herausgerissen wird, deutlich erhöht.With lower flexibilities, if one works in the lower region of the supernatant (7) according to the invention, the risk of the bottom layer (3) being torn out is markedly increased.
Die Flexibilität des die Bodenlage (3) bildenden Materials (3a) ist bei der Erzeugung eines erfindungsgemäß verpackten Produktstapels (4) von entscheidender Bedeutung.The flexibility of the material (3a) forming the bottom layer (3) is of crucial importance in the production of a product stack (4) packed according to the invention.
Wie der
Die Länge des Überstands (7) muss dabei mindestens das Anderthalbfache der in cm ermittelten Flexibilität des die Bodenlage 3 bildenden Materials (3a) betragen. Liegt der Überstand (7) geringer, kommt es bei der nachfolgenden Stretchung zu Problemen mit der Fixierung der Bodenlage (3). Auch ist dann die Gefahr gegeben, dass die erfindungsgemäße Bodenlage (3) aufgrund mechanischer Schubbelastungen bei der Handhabung herausgezogen wird.The length of the projection (7) must be at least one and a half times the determined in cm flexibility of the
Erfindungsgemäß bevorzugt werden Längen des Überstands (7) im Bereich des doppelten bis zum fünffachen Wert der Flexibilität des die Bodenlage (3) bildenden Materials (3a).According to the invention, lengths of the projection (7) are preferably in the range of twice to five times the value of the flexibility of the material (3a) forming the base layer (3).
Anschließend wird der so erzeugte Produktstapel einer handelsüblichen Stretcheinrichtung (10) zugeführt. Der Produktstapel wird mit einzelnen Lagen der Stretchfolie (2a) umhüllt. Dazu kann entweder der Produktstapel (4) selbst in Rotation versetzt werden oder aber die Spendeeinheit (10) für die Stretchfolie (2a) rotiert um den Produktstapel (4). Während der Rotation bewegt sich die Spendeeinheit mehrmals auf und ab. Dabei werden einzelne Lagen aus Stretchfolie (2a) spiralförmig übereinander abgelegt und bilden nach Abschluss dieses Vorgangs in ihrer Gesamtheit die Folienlagen (2).Subsequently, the product stack thus produced is fed to a commercially available stretch device (10). The product stack is covered with individual layers of the stretch film (2a). For this purpose, either the product stack (4) itself can be set in rotation or else the dispensing unit (10) for the stretch film (2a) rotates about the product stack (4). During rotation, the dispensing unit moves up and down several times. In this case, individual layers of stretch film (2a) are superimposed spirally one above the other and form after completion of this process in their entirety the film layers (2).
Die Anlage ist dabei so eingestellt, dass sich der Overstretch (6) sowohl am oberen Ende als auch am unteren Ende des Produktstapels (4) ergibt.The system is set so that the overstretch (6) results both at the upper end and at the lower end of the product stack (4).
Abschließend wird der so verpackte Produktstapel (4) in einer Drehstation (11) um 180° gedreht, sodass die die Bodenlage (3) nun auf der dem Boden zugewandten Seite des Produktstapels(4) zu liegen kommt.Finally, the packaged product stack (4) is rotated in a rotating station (11) by 180 °, so that the bottom layer (3) now comes to rest on the side facing the bottom of the product stack (4).
Erfindungsgemäße für die Bodenlage (3) einsetzbare Materialien (3a) haben wie bereits vorstehend aufgezeigt, eine Flexibilität im Bereich von 5 bis 25cm. Die Flexibilität muss in dem Material (3a) homogen vorhanden sein. Dies bedeutet, dass das die Bodenlage (3) bildende Material (3a) in Fertigungsrichtung, quer zur Fertigungsrichtung und in einem Winkel von 45° zur Fertigungsrichtung annähernd gleiche Überhanglängen (12) aufweist. Diese Eigenschaft ist wichtig um ein gleichmäßiges Falten um die Kanten speziell bei runden Produktstapeln (4) zu erzielen.Inventive materials for the bottom layer (3) usable materials (3a) have, as already shown above, a flexibility in the range of 5 to 25cm. The Flexibility must be present homogeneously in the material (3a). This means that the material (3a) forming the bottom layer (3) has approximately the same overhang lengths (12) in the production direction, transversely to the production direction and at an angle of 45 ° to the production direction. This property is important to achieve a uniform fold around the edges, especially with round product stacks (4).
Geeignet für die Bodenlage (3) sind alle Arten von flexiblen, flächigen, wasserdichten und mechanisch belastbaren Materialien (3a) mit den vorerwähnten Eigenschaften.Suitable for the bottom layer (3) are all types of flexible, flat, waterproof and mechanically strong materials (3a) with the aforementioned properties.
Wasserdicht im Sinne der vorliegenden Erfindung bedeutet, das das Material (3a) einen Wert für die Wassersäule (ermittelt nach "WSP 080.6.R4 (12)") von größer 1000mm Wassersäule aufweist.Waterproof in the sense of the present invention means that the material (3a) has a value for the water column (determined according to "WSP 080.6.R4 (12)") of greater than 1000 mm water column.
Mechanische belastbar im Sinne der vorliegenden Erfindung bedeutet, das das Material (3a) entlang oder quer zur Fertigungsrichtung des Materials (3a) eine Reißkraft von größer 200N/25mm (ermittelt nach "WSP 110.4.R4 (12)", Option A) aufweist.Mechanical loadable in the sense of the present invention means that the material (3a) along or transversely to the production direction of the material (3a) has a tensile strength of greater than 200N / 25mm (determined according to "WSP 110.4.R4 (12)", option A).
Erfindungsgemäß bevorzugt werden mehrlagige Laminate von Folien mit Geweben, wobei Laminate aus Folien mit Bändchengeweben am meisten bevorzugt werden.Multi-layer laminates of films with fabrics are preferred in the present invention, with laminates of films with ribbon fabrics being most preferred.
Zweilagige Laminate aus einem Bändchengewebe auf der einen Seite und einer Folienlage auf der anderen Seite bringen für die erfindungsgemäße Verpackung weitere Vorteile.Two-layer laminates of a ribbon fabric on one side and a film layer on the other side bring further advantages for the packaging according to the invention.
Derartige Aufbauten, wie beispielsweise unter der Produktbezeichnung BE113 von Lenzing Plastics, Lenzing, Österreich erhältlich, bestehen aus einer LD-Polyethylen-Folie mit 35 g/m2, welche mittels direkt auf ein 78g/m2 Bändchengewebe aus HD-Polyethylen extrudiert und dadurch verbunden wurde. Dieses Material weist Flexibilitäten in Fertigungsrichtung ca.8,5 cm, quer zur Fertigungsrichtung von ca.8,4cm und in einem Winkel von 45° zur Fertigungsrichtung von ca. 8,2cm auf. Dabei wurde, gemäß dem Testaufbau aus
Werden derartige Laminate als Materialien (3a) für die Bodenlage (3) verwendet, so wird das Material (3a) auf dem Produktstapel (4) so platziert, dass die Folienseite zum Produktstapel (4) hin zeigt und die Seite mit dem Bändchengewebe nach außen. Erfindungsgemäß werden die Abmessungen der Bodenlage (3) so bemessen, dass sich dabei ein Überstand (7) der Bodenlage (3) in Höhe von 30 cm bildet, was dem 3,6-fachen der Flexibilität des die Bodenlage (3) bildenden Materials (3a) entspricht.When such laminates are used as the bottom sheet material (3a), the material (3a) is placed on the product stack (4) so that the film side faces the product stack (4) and the ribbon fabric side faces out , According to the invention, the dimensions of the bottom layer (3) are dimensioned such that a projection (7) of the bottom layer (3) is formed at a height of 30 cm, which is 3.6 times the flexibility of the material forming the bottom layer (3). 3a) corresponds.
Das Bändchengewebe erhöht aufgrund der Oberflächenstruktur die Haftung an Oberflächen wie beispielsweise auf Böden, was beispielsweise wichtig für den Transport im LKW ist, da die Produktstapel (4) weniger zum Verschieben neigen. Weiterhin wird auch die Gefahr, dass die Bodenlage (3) herausgerissen wird, aufgrund der erhöhten Reibung. deutlich verringert.Due to the surface structure, the ribbon fabric increases the adhesion to surfaces such as floors, which is important for transport in the truck, for example, because the product stacks (4) are less prone to shifting. Furthermore, the risk that the bottom layer (3) is torn out, due to the increased friction. significantly reduced.
Des Weiteren bilden die Schuss- und Kettfäden des Bändchengewebes im Bereich des Overstretches (6) und des Überstands(7) eine mechanische Barriere für Schmutzpartikel. Sollte es zum Aufbalgen des Produktstapels (4) kommen, werden die Schmutzpartikel in den Strukturen des Bändchengewebes zurückgehalten.Furthermore, the weft and warp threads of the ribbon fabric in the region of the overstretch (6) and the supernatant (7) form a mechanical barrier for dirt particles. Should it come to the lifting of the product stack (4), the dirt particles are retained in the structures of the ribbon fabric.
Die erfindungsgemäße Verpackung für Produktstapel kann mittels der folgenden Verfahrensschritte erzeugt werden. Dabei wird die Beschreibung des Verfahrens an der Verpackungslinie eines Produktstapels gezeigt, welcher aus einzelnen Rollen besteht und am Schluss einen zylindrischen Produktstapel ergibt.
Der in
- Schritt a: eine vorbestimmte Anzahl von Einzelrollen, welche den Produktstapel (4) bildet, fährt liegend auf einen Kipptisch (8) an die vorgelegte Ronde (1).
- Schritt b: der Kipptisch (8) wird um 90° gedreht, sodass die Ronde (1) unterhalb des Produktstapels (4) zu liegen kommt.
- Schritt c: der Produktstapel (4) fährt auf einer Rollenbahn stehend unter den Deckblattaufleger (9). Dort wird die Bodenlage (3) zentriert auf die Oberseite des Produktstapels (4) aufgelegt. Die über die Grundfläche des Produktstapels hinausragenden Flächenteile der Bodenlage (3) falten sich entlang der Kante des Produktstapels (4) und bilden den Überstand (7).
- Schritt d: der Produktstapel (4) wird der Stretcheinheit (10) zugeführt. Dort wird mittels einer umlaufenden Folienspendeeinheit die Stretchfolie (2a) um den Produktstapel (4) um die Folienlagen (2) zu bilden. Die Einstellung der Stretcheinheit (9) ist dabei so gewählt, dass sich der Overstretch (6) ergibt und dadurch die Decklage (1) und die Bodenlage (3) fixiert werden.
- Schritt e: erfindungsgemäß wird der verpackte Produktstapel (4) nun der Drehstation (11) zugeführt. In der Drehstation (11) wird der Produktstapel (4) erfindungsgemäß um 180° gedreht, sodass die Bodenlage (3) nun auf der Unterseite und die Decklage (1) an der Oberseite des Produktstapels (4) zu liegen kommt.
- Schritt f: der so hergestellte und verpackte erfindungsgemäß ausgeführte Produktstapel (4) kann der weiteren Handhabung zugeführt werden.
The in
- Step a: a predetermined number of individual rollers, which forms the product stack (4), moves lying on a tilting table (8) to the presented Ronde (1).
- Step b: the tilting table (8) is rotated by 90 ° so that the blank (1) comes to lie below the product stack (4).
- Step c: the product stack (4) moves on a roller conveyor under the cover sheet applicator (9). There, the bottom layer (3) centered on the top of the product stack (4) is placed. The surface parts of the bottom layer (3) projecting beyond the base area of the product stack fold along the edge of the product stack (4) and form the projection (7).
- Step d: the product stack (4) is fed to the stretch unit (10). There is by means of a rotating film dispensing unit, the stretch film (2a) to form the product stack (4) to the film layers (2). The setting of the stretch unit (9) is chosen so that the overstretch (6) results and thereby the cover layer (1) and the bottom layer (3) are fixed.
- Step e: According to the invention, the packaged product stack (4) is now fed to the turning station (11). In the turning station (11), the product stack (4) according to the invention rotated by 180 °, so that the bottom layer (3) now on the bottom and the cover layer (1) comes to rest on the top of the product stack (4).
- Step f: The product stack (4) thus produced and packaged according to the invention can be supplied for further handling.
Nach diesem Verfahren und unter Verwendung der beschriebenen Materialien erfindungsgemäß hergestellte Produktstapel zeichnen sich durch eine hohe mechanische Belastbarkeit aus und tragen daher zur Verminderung von Transport- und Handhabungsschäden bei. Sie leisten dadurch einen wichtigen Beitrag zur Nachhaltigkeit und Ressourcenschonung in Produktion und Logistik.According to this method and using the materials described inventively produced product stack are characterized by a high mechanical strength and therefore contribute to the reduction of transport and handling damage. They make an important contribution to sustainability and resource conservation in production and logistics.
- 1a1a
- - Decklage- top layer
- 1a1a
- - überstehende Decklage- supernatant top layer
- 22
- - Folienlagen- film layers
- 2a2a
- - Stretchfolie- Stretch film
- 33
- - Bodenlage- Ground level
- 3a3a
- - Material der Bodenlage- Material of the bottom layer
- 44
- - Produktstapel- Product stack
- 55
- - Außenseite- outside
- 66
- - Overtretch- Overtretch
- 77
- - Überstand- Got over
- 88th
- - Kippstation- tilting station
- 99
- - Auflageeinheit für Bodenlage (3)- support unit for floor position (3)
- 1010
- - Stretcheinheit- Stretch unit
- 1111
- - Drehstation- Turning station
- 1212
- - Überhanglänge- Overhang length
- 1313
- - Biegewinkel- bending angle
- 1414
- - Messlineal- Measuring ruler
- 1515
- - Teststreifen- Test strips
Claims (10)
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Priority Applications (1)
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PL15160955T PL2949598T3 (en) | 2014-05-28 | 2015-03-26 | Pallet-free packaging for stacks of products |
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DE102014007733.0A DE102014007733A1 (en) | 2014-05-28 | 2014-05-28 | Pallet-free packaging for product stacks |
Publications (2)
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EP2949598A1 true EP2949598A1 (en) | 2015-12-02 |
EP2949598B1 EP2949598B1 (en) | 2020-04-22 |
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EP15160955.9A Active EP2949598B1 (en) | 2014-05-28 | 2015-03-26 | Pallet-free packaging for stacks of products |
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EP (1) | EP2949598B1 (en) |
DE (1) | DE102014007733A1 (en) |
ES (1) | ES2802980T3 (en) |
PL (1) | PL2949598T3 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3893279A (en) * | 1972-01-05 | 1975-07-08 | Arenco Jm Ab | Method of packaging load units in weldable plastic foil |
DE3120215A1 (en) | 1981-05-21 | 1982-12-16 | Bernhard Beumer Maschinenfabrik Kg, 4720 Beckum | "PLANT FOR MANUFACTURING PALLETLESS, FILM-SHRINKED PIECE STACK, IN PARTICULAR BAG STACK" |
JPS6077875A (en) * | 1983-10-04 | 1985-05-02 | 本州製紙株式会社 | No-pallet package and manufacture thereof |
WO2000053498A1 (en) * | 1999-03-11 | 2000-09-14 | Seelen A/S | A top film applicator and a method of applying top film onto a cargo |
US20080216450A1 (en) * | 2006-03-27 | 2008-09-11 | Transfresh Corporation | Methods and apparatus for preserving pallet units of fresh perishables in modified atmosphere-containing bags |
DE102011010126A1 (en) * | 2011-02-02 | 2012-08-02 | Maschinenfabrik Möllers Gmbh | Method for producing a palletless packaging unit |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3640048A (en) * | 1968-10-07 | 1972-02-08 | Weldotron Corp | Method and apparatus for a pallet load |
-
2014
- 2014-05-28 DE DE102014007733.0A patent/DE102014007733A1/en not_active Ceased
-
2015
- 2015-03-26 EP EP15160955.9A patent/EP2949598B1/en active Active
- 2015-03-26 PL PL15160955T patent/PL2949598T3/en unknown
- 2015-03-26 ES ES15160955T patent/ES2802980T3/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3893279A (en) * | 1972-01-05 | 1975-07-08 | Arenco Jm Ab | Method of packaging load units in weldable plastic foil |
DE3120215A1 (en) | 1981-05-21 | 1982-12-16 | Bernhard Beumer Maschinenfabrik Kg, 4720 Beckum | "PLANT FOR MANUFACTURING PALLETLESS, FILM-SHRINKED PIECE STACK, IN PARTICULAR BAG STACK" |
JPS6077875A (en) * | 1983-10-04 | 1985-05-02 | 本州製紙株式会社 | No-pallet package and manufacture thereof |
WO2000053498A1 (en) * | 1999-03-11 | 2000-09-14 | Seelen A/S | A top film applicator and a method of applying top film onto a cargo |
US20080216450A1 (en) * | 2006-03-27 | 2008-09-11 | Transfresh Corporation | Methods and apparatus for preserving pallet units of fresh perishables in modified atmosphere-containing bags |
DE102011010126A1 (en) * | 2011-02-02 | 2012-08-02 | Maschinenfabrik Möllers Gmbh | Method for producing a palletless packaging unit |
Also Published As
Publication number | Publication date |
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EP2949598B1 (en) | 2020-04-22 |
ES2802980T3 (en) | 2021-01-22 |
DE102014007733A1 (en) | 2015-12-03 |
PL2949598T3 (en) | 2020-09-21 |
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