EP2771255B1 - Film d'emballage multifonction et procede de fabrication - Google Patents

Film d'emballage multifonction et procede de fabrication Download PDF

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Publication number
EP2771255B1
EP2771255B1 EP12805766.8A EP12805766A EP2771255B1 EP 2771255 B1 EP2771255 B1 EP 2771255B1 EP 12805766 A EP12805766 A EP 12805766A EP 2771255 B1 EP2771255 B1 EP 2771255B1
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EP
European Patent Office
Prior art keywords
layer
packaging film
compartments
cushioning
elasticity
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.)
Not-in-force
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EP12805766.8A
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German (de)
English (en)
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EP2771255A1 (fr
Inventor
Peter Hagmann
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Individual
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Individual
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Publication of EP2771255A1 publication Critical patent/EP2771255A1/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D81/00Containers, 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
    • B65D81/02Containers, 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
    • B65D81/03Wrappers or envelopes with shock-absorbing properties, e.g. bubble films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31DMAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0039Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
    • B31D5/0073Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including pillow forming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31DMAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D2205/00Multiple-step processes for making three-dimensional articles
    • B31D2205/0005Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads

Definitions

  • the invention relates to a packaging film for safe packaging of packaged goods of various sizes.
  • the invention relates to a packaging film with which packaged goods are simultaneously padded and held together.
  • the invention relates to a method for producing the film.
  • Articles of any kind must usually be shielded from external influences during transport from the place of manufacture to the consumer in order to avoid transport damage. Such influences may be shocks and rubbing touches with other objects or transport pallets, as may occur during handling with fork-lift trucks, during transport by trucks, etc., but also weather influences that can act on the cargo in particular during loading and unloading in transport vehicles , as well as manipulation or theft.
  • the packaging materials thus have the primary function of transport safety.
  • the packaging can also fulfill the task to hold the first loose goods within an outer packaging such as in particular a pallet together and / or connect to the pallet, so that a well manageable unit is formed (lot packaging).
  • bubble wrap which are typically made of polyethylene (PE) and made of a least two-ply, usually transparent film consist of regular air inclusions.
  • Foam foils or roll corrugated cardboard are also used as packaging material.
  • Such films hereinafter also referred to as cushioning films for short, are flexible but not extensible.
  • Stretch films are particularly expansible films, as they are familiar, for example from the field of cling film.
  • Such films may be made of PE.
  • an object or a loose composite of articles is wrapped with such a film while it is under tension, it expands as it is being wound, thereby applying a permanent pressure to the composite of the articles, so that a coherent surface is formed , a more easily manageable body is created.
  • the product To re-dicing the product must be the film usually cut, since the surfaces of the film usually have a strong adhesion to each other, so that rewinding is difficult.
  • such films have no resilient or damping effect against external mechanical influences, and protect only (and only limited) against weather or manipulation.
  • Single, yourself enclosing envelopes absorb a flowable medium under pressure.
  • the outermost disposed protective sheet is substantially inextensible, whereas the innermost sheet can conform to the packaged item.
  • a collapsible body can be provided, which protects against both external influences such as weather or shock, and provides good padding on the inside.
  • the packaged goods must first be introduced into the unfilled packaging body, which is then filled with the flowable medium. Only after this filling of the device, this also ensures a good cohesion of the embedded goods or.
  • the device is elaborately constructed, a variety of steps are necessary for its operation, and they must each be adapted to the geometry of the packaged goods.
  • the object of the invention is therefore to provide a packaging film for avoiding the problems known from the prior art.
  • the invention is intended to provide a packaging film which allows a time-saving and material-saving manner without adapting a strapping of packaged goods of different sizes and shapes.
  • both the function of the transport safety device and the function of protection against external influences should be fulfilled.
  • the invention should provide a method for producing the packaging film according to the invention.
  • the invention provides an integrated packaging film which enables simultaneous protection and cushioning of packaged goods, as will be described in detail below.
  • the packaging film according to the invention accordingly comprises at least two functional layers.
  • the term functional layers is not necessarily to be equated with "material layers". Accordingly, a functional layer merely serves to fulfill a specific function, whereas material layers can also fulfill a plurality of functions.
  • a first functional layer is designed as a carrier layer made of a material having high extensibility ⁇ max in at least one spatial direction, more preferably more than 50%; a lower limit is 15%, with 25% being preferred.
  • the carrier layer is therefore always present and, so to speak, forms the basis of the packaging film.
  • the carrier layer is stretchable and has a high extensibility.
  • extensibility is defined herein to mean a measure of the maximum allowable elongation, also called "elongation at break”. This refers to that strain, ie the ratio of change in length ⁇ L to original length L, at which a sample breaks in the tensile test.
  • the material can stretch to twice the original length before it breaks or constricts significantly.
  • a high extensibility is for example more than 50%, preferably more than 100%. In special cases, it can also amount to more than 150%, based on the original length.
  • a further functional layer is formed as a cushion layer comprising an outer layer and a plurality of filled or filled with a gas or gas mixture compartments formed by non-interconnected areas of the material layers surrounding them are, has.
  • the cushion layer can also have other layers (material layers) than the outer layer.
  • the compartments serve as the actual cushioning agent. They typically have a round or oval shape and dimensions of about 0.5 to 10 cm, and preferably about 4 cm.
  • the packaging film is designed as a composite material or "composite” for short, in which all functional layers are connected to one another in this way.
  • the padding layer is formed from a material of the same or similar extensibility as the carrier layer, so that the extensibility of the first functional layer in the at least one spatial direction is adversely affected by no further functional layer, and / or in that the padding layer consists of at least one of the one spatial direction unconnected segments is constructed so that the composite material in the at least one spatial direction has a sufficient residual extensibility.
  • the functionality of the carrier layer may not be (substantially) disturbed by the further functionalities that are realized by further functional layers.
  • the type of connection can be done, for example, chemically and / or thermally. It can be over the whole area or over a partial area, and it is also conceivable that the functional layers are produced integrally so that a subsequent connection of physical layers is no longer necessary at all.
  • Such a packaging film has the advantage, due to the high elasticity to ensure the cohesion of packaged goods, and at the same time provide good protection against damage, shock, etc. due to the cushioning properties. Since the film is present as a composite material, the known from the prior art, typical and time-consuming wrapping with several different films. At the same time, it's always the right amount On material of both functional layers present, and also the fixing of the different films together is eliminated.
  • the extensibility ⁇ max of the first functional layer in the at least one spatial direction is adversely affected by no further functional layer, in that the cushion layer is also formed from a material of equal or comparable (ie not greatly deviating) extensibility ⁇ max, v as the carrier layer.
  • the cushioning layer can be stretched together with the carrier layer, and that the extensibility of the composite corresponds approximately to the extensibility of the carrier layer alone.
  • “impaired” is not to be equated with "unchanged”, but that the change does not have a high significance in comparison with the original value, and for example not more than 20%, preferably not more than 10%, and particularly preferably not more than 5% deviation from the original value means.
  • the above assumption is satisfied that the extensibility ⁇ max of the first functional layer in the at least one spatial direction is impaired by no further functional layer.
  • a ⁇ max higher extensibility of the cushion layer ⁇ max ' is advantageous for elongation of the backing layer, since a considerably increased traction when wrapping packaged goods, it is necessary, by increasing the overall thickness of support and cushion layer otherwise, when a particular strain desired is.
  • the thickness of the carrier layer can be correspondingly reduced or its extensibility ⁇ max can be reduced in order to obtain a composite material which is attached with approximately the same tensile force on the packaged goods, which was originally used for the carrier layer alone.
  • Comparable extensibility of both layers is also desirable in order to avoid shear stresses at the interface between the layers.
  • the composite material has a sufficient residual extensibility ⁇ rest, v in the at least one spatial direction.
  • this residual extensibility (on average, based on, for example, a 1 m long piece) is reduced by not more than 75%, preferably not more than 50%, and particularly preferably not more than 25%, compared to the extensibility ⁇ max of the first functional layer ,
  • the cushion layer is made up of segments which are at least disjoint in one spatial direction.
  • the cushion layer is formed discontinuous, sufficiently large areas of the carrier layer remain uncovered, which can then stretch freely, thus having an extensibility ⁇ max .
  • the extensibility is possibly significantly lower, depending on the extensibility of the composite of carrier and cushion layer present there.
  • the segments are preferably designed such that they are in the form of stripes or insular. The strips run transversely to the above-mentioned spatial direction, which also represents the pulling direction when wrapping packaged goods. The islands are completely independent of each other and thus allow the extensibility of the carrier layer in many directions to be largely unaffected.
  • the extensibility ⁇ max refers to the so-called "uniform strain” Ag. This is the stretch without significant necking of the sample.
  • the term “elasticity” continues to apply below. Accordingly, it is preferred to refer to a material having a "uniform strain”.
  • such a material also has a certain elasticity, that is, it tries to go back to its original state, that is, to pull itself together.
  • such materials have the effect of plastically deforming when a certain basic strain is exceeded, always with a residual elasticity.
  • the carrier layer for example, when wrapping packaged goods, be greatly stretched, and retracts despite plastic deformation in withdrawal of traction something together, so that an acting on the packaged compressive force is created, which holds this together.
  • the carrier layer is a so-called stretch film, as is known in the field of packaging technology. Accordingly, it is preferred that the material of the first functional layer has an elastic extensibility ⁇ e of at least 20%.
  • the cushion layer further comprises an inner layer adjacent to the carrier layer, and the compartments are formed by non-interconnected portions of that inner layer and the outer layer.
  • a conventional padding film This consists of two layers that have unconnected areas.
  • chambers are formed, which, filled with a gas or gas mixture, serve as padding elements.
  • this inner layer must adjoin the carrier layer and be connected to it according to the invention.
  • a cover layer may still be present on the outer layer, which then offers the advantage that the compartments do not map outwards in use.
  • the compartments are formed by unconnected regions of the outer layer and the carrier layer. Accordingly, here the carrier layer (additionally) assumes the function of the inner layer described above.
  • the compartments are again formed by unconnected regions of two adjacent layers.
  • a cover layer can also be applied here, which is located only over the segments or even the entire film surface.
  • the extensibility of the cover layer must be comparable to that of the support layer.
  • the packaging film consists of a cushioning film whose inner and outer layers are made of a material of high ductility.
  • a film fulfills both desired functions.
  • the regions of the compartments of a material of lower ductility than the material between the compartments.
  • the different extensibility can also be achieved for example by a different aftertreatment of the material, so that the areas between the compartments are more flexible than the areas of the compartments themselves.
  • the complexity of the Packaging film in the area of the compartments to a lower elasticity than in the area of the interstices, where the film consists of only one layer. By thinning out these areas, a higher extensibility can be achieved.
  • the packaging film according to the invention preferably has a main stretching direction. This corresponds to the at least one spatial direction which has already been mentioned above.
  • the compartments In the unexpanded state, the compartments have a width exceeding their length and running transversely to the main expansion direction.
  • the compartments seen in a plan view of the packaging film, an elliptical, oval shape, or an elongated shape with particularly preferred rounded corners.
  • This shape changes as the backing layer is stretched, such that the length increases, and the width either remains the same (in the case of even elongation) or decreases (in the case of necking).
  • the extensibility ⁇ max corresponds to the quotient of width and length in the unstretched state. If the packaging film is stretched during packaging until it has reached its ductility (eg 100%, corresponding to factor 2), then an elliptical compartment with a width which is twice as long as its length becomes a round compartment, at which width and length are about the same.
  • a positive side effect is the ability to use the shape change of the compartments as a measure of achieving a desired elongation.
  • the desired elongation can be achieved just when the compartments have, for example, changed from an elliptical to a round shape, or from a rectangular to a square shape.
  • areas can be easily found, at where the strain is too low or too high, resulting in insufficient generation of compressive force or overuse of the packaging film and therefore must be avoided.
  • the outer surface of the outer layer is coated or adapted to be adhered to the outwardly facing side of the carrier layer, and / or vice versa, i. the inside is coated to adhere to the outside.
  • a double-sided adhesive coating is also possible. This adhesion results in a waiver of further fixative after wrapping of packaged goods. When they touch the two layers adhere to each other sufficiently strong, so that at least the shearing forces occurring during the self-unwinding are exceeded by the adhesive forces. It is clear that application of tensile forces acting perpendicularly to the packaging film can more easily lead to overcoming the adhesive forces, so that an intentional unwinding of the film is still possible without it detaching itself.
  • Preferred methods of treatment are chemical application or corona or UV treatment.
  • the packaging film forms an antistatic or anticorrosive effect on a packaged product.
  • the outside of the outer layer and / or the outwardly facing side of the carrier layer is coated or obtained accordingly.
  • special goods such as electronic devices or moisture-sensitive objects, those with a sensitive surface, etc. can be advantageously packaged with the packaging film according to the invention, without the need for additional films.
  • These additional functionalities are accordingly accommodated in one or more further functional layers which may physically coincide with the carrier and / or the cushion layer.
  • the packaging film is made of polyethylene or comprises PE. PE has a very high ductility and is also available at low cost. Accordingly, a film made of this material is functional and inexpensive.
  • other materials such as PE mixtures, polypropylene, polyester or similar. be sufficiently suitable. Also material composites of different materials are possible.
  • the cushion layer is present as a continuous or segmental layer. However, it is clear that in the case where the cushion layer is constructed as a continuous layer, the extensibilities of the carrier and cushion layers should be approximately equal.
  • a first method according to the invention for producing a packaging film relates to such a packaging film which comprises a carrier layer and a cushion layer with compartments as defined above, wherein the compartments are formed by unconnected regions of the inner layer and the outer layer.
  • a packaging film which comprises a carrier layer and a cushion layer with compartments as defined above, wherein the compartments are formed by unconnected regions of the inner layer and the outer layer.
  • Such a film can also be referred to as a "two-layer cushioning film", since the cushioning layer comprises two "own” layers associated with it, and the backing layer is irrelevant to the formation of the cushioning layer.
  • the packaging film is produced by the carrier layer and the initially separately present cushion layer are permanently connected to each other.
  • the cushion layer is preferably already in the form of a finished film and merely has to be connected to the carrier layer, for example welded, be.
  • a gas or gas mixture is injected into the space between the inner and outer layers of the initially separately present cushion layer, while the inner layer and outer layer approximate each other and finally at least in the compartments defining and bounding the compartments are inextricably linked. Subsequently, the connecting step takes place with the carrier film.
  • first carrier and inner layer and then this composite are connected to the outer layer. All that is essential is that, as the layers forming the compartments approach, gas or gas mixture is blown into the intermediate space between these layers.
  • a second method according to the invention for producing a packaging film relates to such a packaging film which comprises a carrier layer and a cushion layer with compartments as defined above, wherein the compartments are formed by non-interconnected regions of the outer layer and the carrier layer.
  • a packaging film which comprises a carrier layer and a cushion layer with compartments as defined above, wherein the compartments are formed by non-interconnected regions of the outer layer and the carrier layer.
  • Such a film may also be referred to as a "one-layer cushioning film", since the cushioning layer comprises only the outer layer as its "own” layer, since the second, likewise necessary, layer is formed by the carrier layer.
  • the packaging film is produced by blowing a gas or gas mixture into the intermediate space between the carrier layer and initially separately present cushion layer, while the carrier layer and cushion layer approximate each other and are finally connected to one another inextricably apart from the areas which define the compartments.
  • the gas or gas mixture which is particularly preferably air, trapped in the compartments and thus achieves the desired Cushioning effect.
  • the type of connection can be done, for example, chemically and / or thermally. It can be over the entire surface or over a partial area, it being important to ensure that at least the peripheral areas surrounding the compartments are connected.
  • the compartments for example by means of deep drawing, formed from the carrier layer before the gas or gas mixture is blown.
  • the compartments for example by means of deep drawing, formed from the carrier layer before the gas or gas mixture is blown.
  • different shapes for example, smaller compartments on the edge and larger in the central region of the film or vice versa, are easier to produce.
  • the areas which form the compartments are non-stick coated and / or formed during the production of the cushion layer from this.
  • the coating prevents adhesion of the compartments forming areas, so that they are preferably filled with gas or gas mixture, and spring back apart even when squeezing the Kompartiments.
  • Forming the compartments for example by means of deep drawing, has the advantage that they have substantially the same wall thickness in the filled state of use and therefore have no "predetermined breaking points", which are particularly sensitive to overpressure due to the greater strain during production, as in loading the compartments typically occur quickly.
  • the shaping can be on one or both sides, ie relate to the outer layer and / or the inner or carrier layer. Likewise, adjacent compartments may alternately be formed in the outer and the inner or carrier layer.
  • the invention provides a packaging film which avoids the problems known from the prior art.
  • the invention provides a packaging film, which allows a time-saving and material-saving manner a strapping of packaged goods. In doing so, both the function of transport safety and the function of protection against external influences are fulfilled.
  • the invention provides a method for producing the packaging film according to the invention.
  • FIG. 1 a first embodiment of the packaging film 1 according to the invention with three layers 2, 3A, 3B is shown in a cross-sectional view.
  • the inner layer 3B of the cushion layer 3 is connected.
  • the outer layer 3A of the cushion layer 3 has bulges forming the compartments 4.
  • the compartments 4 are formed by the fact that the areas in the inner layer 3B and outer layer 3A, which form the compartments 4, are not interconnected.
  • the compartments 4 are filled with a gas or gas mixture (not numbered). Since the cushion layer is made up of two "own" layers 3A, 3B, the embodiment shown may also be referred to as a "two-layer cushion composite film".
  • FIG. 2 shows a second embodiment of the packaging film 1 according to the invention with two layers 2, 3A in a cross-sectional view.
  • the inner layer 3B is missing.
  • the outer layer 3A of the cushion layer 3 is connected directly to the side of the carrier layer 2 lying on top of the image.
  • a packaging film can be obtained which consists of only two layers, but combines the properties of a stretch film and a cushioning film together.
  • the extensibilities of both layers 2 and 3A are approximately equal to ensure the extensibility of the composite material.
  • the cushioning layer comprises only a "separate" layer 3A, the illustrated embodiment may also be referred to as a "one-layer cushioning composite film".
  • FIG. 3 a third embodiment of the packaging film 1 according to the invention with two layers 2, 3A and a segment-like cushion layer 3 is shown in a cross-sectional view.
  • the cushion layer 3 is not present as a continuous layer. This allows the cushioning layer 3, and thus the outer layer 3A, to be made of a material of other, and in particular lesser, extensibility than the carrier layer 2.
  • the composite material Due to the extensibility of the part of the carrier layer 2, which is between the segments 3 'and 3''of the cushion layer 3 is located (Dehn Scheme 5), the composite material still has a certain extensibility, which is less than that of the carrier layer 2 alone, since only parts thereof for extensibility in the main -Dehnraum X contribute.
  • FIG. 4 shows a packaging film 1 according to the invention in the unstretched state in a plan view. Accordingly, the compartments 4 (only one provided with reference numerals) have an approximately elliptical shape. Thus, in the unstretched state illustrated, the compartments 4 have a width B which exceeds their length L and extends transversely to the main stretching direction X.
  • the extensibility particularly preferably corresponds to the quotient of width B and length L in the unstretched state. If the packaging film 1 is stretched during packaging until it has reached its extensibility (eg 100%, corresponding to factor 2), then a round ellipse-shaped compartment 4 with a length L which is half the width B thereof becomes round stretched compartment 4 ', in which width B and stretched length L' are approximately equal. In this way, a control option is also given, which indicates in a simple manner a reaching the correct extensibility, which is characterized by a certain, for example, round or square shape of the compartments 4 '.
  • its extensibility eg 100%, corresponding to factor 2

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Claims (14)

  1. Film d'emballage (1) comprenant au moins deux couches fonctionnelles, dans lequel une première couche fonctionnelle est configurée sous la forme d'une couche support (2) en un matériau présentant dans au moins une direction de l'espace (X) une extensibilité (εmax) de plus de 25 % et dans lequel une autre couche fonctionnelle est configurée sous la forme d'une couche de rembourrage (3), qui comprend une couche extérieure (3A) et une pluralité de compartiments (4) remplis ou remplissables avec un gaz ou un mélange de gaz, qui sont formés par des zones non reliées les unes avec les autres des couches de matériau les entourant, et dans lequel le film d'emballage (1) est configuré sous la forme d'un matériau composite, dont toutes les couches fonctionnelles sont reliées les unes avec les autres de telle sorte, et dans lequel
    - la couche de rembourrage (3) est configurée en un matériau d'extensibilité (εmax) identique ou comparable à la couche support (2), de sorte que l'extensibilité (εmax) de la première couche fonctionnelle dans la ou les directions de l'espace (X) ne soit entravée par aucune autre couche fonctionnelle, et/ou
    - la couche de rembourrage (3) est formée de segments (3', 3') discontinus au moins dans la direction de l'espace (X), de sorte que le matériau composite présente dans la ou les directions de l'espace (X) une extensibilité résiduelle (εrés, v) suffisante.
  2. Film d'emballage (1) selon la revendication 1, dans lequel l'extensibilité (εmax) se rapporte à l'allongement uniformément réparti (Ag) et/ou le matériau de la couche support (2) présente une extensibilité élastique (εe) d'au moins 20 %.
  3. Film d'emballage (1) selon la revendication 1 ou 2, dans lequel la couche de rembourrage (3) comprend en outre une couche intérieure (3B) adjacente à la couche support (2), et dans lequel les compartiments (4) sont formés par des zones non reliées les unes avec les autres de cette couche intérieure (3B) et de la couche extérieure (3A).
  4. Film d'emballage (1) selon l'une quelconque des revendications 1 ou 2, dans lequel les compartiments (4) sont formés par des zones non reliées les unes avec les autres de la couche extérieure (3A) et de la couche support (2).
  5. Film d'emballage (1) selon l'une quelconque des revendications précédentes, dans lequel celui-ci présente une direction d'allongement principale (X) et dans lequel les compartiments (4) présentent à l'état non allongé une largeur (B) qui dépasse leur longueur (L) et qui est perpendiculaire à la direction d'allongement principale (X).
  6. Film d'emballage (1) selon la revendication 5, dans lequel l'extensibilité (εmax) correspond au quotient de la largeur (B) et de la longueur (L).
  7. Film d'emballage (1) selon l'une quelconque des revendications précédentes, dans lequel le côté extérieur de la couche extérieure (3A) est revêtu ou configuré de manière à pouvoir adhérer sur le côté orienté vers l'extérieur de la couche support (2) et/ou inversement.
  8. Film d'emballage (1) selon l'une quelconque des revendications précédentes, dans lequel le film d'emballage (1) exerce un effet antistatique ou anticorrosif sur un produit emballé.
  9. Film d'emballage (1) selon l'une quelconque des revendications précédentes, dans lequel celui-ci est constitué de polyéthylène ou comprend ce matériau.
  10. Procédé de fabrication d'un film d'emballage (1), comprenant une couche support (2) et une couche de rembourrage (3) à compartiments (4) selon la définition de la revendication 1 ou 2, dans lequel les compartiments (4) selon la définition de la revendication 3 sont formés par des zones non reliées les unes avec les autres de la couche intérieure (3B) et de la couche extérieure (3A), et le film d'emballage (1) est fabriqué en reliant de manière permanente la couche support (2) et la couche de rembourrage (3) qui se présente tout d'abord séparément.
  11. Procédé de fabrication d'un film d'emballage (1), comprenant une couche support (2) et une couche de rembourrage (3) à compartiments (4) selon la définition de la revendication 1 ou 2, dans lequel les compartiments (4) selon la définition de la revendication 4 sont formés par des zones non reliées les unes avec les autres de la couche extérieure (3A) et de la couche support (2), et le film d'emballage (1) est fabriqué en injectant un gaz ou un mélange de gaz dans l'espace entre la couche support (2) et la couche de rembourrage (3) qui se présente tout d'abord séparément, tandis que la couche support (2) et la couche de rembourrage (3) sont rapprochées l'une de l'autre et enfin reliées de manière permanente jusqu'aux zones qui définissent les compartiments (4).
  12. Procédé selon la revendication 11, dans lequel les compartiments (4) sont formés par emboutissage profond de la couche support (2) avant l'injection du gaz ou du mélange de gaz.
  13. Procédé selon l'une quelconque des revendications 10 à 12, dans lequel les zones qui forment les compartiments (4) sont revêtues avec un revêtement anti-adhérent et/ou sont formées dans le cadre de la fabrication de la couche de rembourrage (3) à partir de celle-ci.
  14. Procédé selon l'une quelconque des revendications 10 à 13, dans lequel un revêtement de surface a en outre lieu avant ou après la liaison pour améliorer les propriétés antistatiques, anticorrosives et/ou d'adhésion.
EP12805766.8A 2011-10-27 2012-10-29 Film d'emballage multifonction et procede de fabrication Not-in-force EP2771255B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110054883 DE102011054883B3 (de) 2011-10-27 2011-10-27 Multifunktionale Verpackungsfolie und Herstellverfahren
PCT/IB2012/055963 WO2013061306A1 (fr) 2011-10-27 2012-10-29 Film d'emballage multifonction et procédé de fabrication

Publications (2)

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EP2771255A1 EP2771255A1 (fr) 2014-09-03
EP2771255B1 true EP2771255B1 (fr) 2015-03-11

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EP (1) EP2771255B1 (fr)
DE (1) DE102011054883B3 (fr)
WO (1) WO2013061306A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN217023655U (zh) * 2021-12-10 2022-07-22 谭敏洪 可形变缓冲单体结构、包装纸和包装纸袋
WO2023142461A1 (fr) * 2022-08-22 2023-08-03 成泰昌包装制品(深圳)有限公司 Coussin tampon et sac d'emballage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH377714A (de) * 1964-06-26 1964-05-15 Puetz Eugen Verpackungskörper
US5688578A (en) * 1992-03-16 1997-11-18 Goodrich; David P. Composite packaging material having an expanded sheet with a separator sheet
US5873464A (en) * 1994-03-17 1999-02-23 Appleton Papers, Inc. Film bubble wrap interleaf
US6015047A (en) * 1998-04-08 2000-01-18 Greenland; Steven J. Inflatable package cushioning and method of using same
NL2000956C2 (nl) * 2007-10-24 2009-04-27 Maundy Finance Company N V Verpakkingsinrichting, in het bijzonder verpakkingsmateriaal voor het verpakken van een product, een werkwijze voor het verpakken van een of meer producten en gebruik van verpakkingsmateriaal.
JP4461249B1 (ja) * 2009-05-26 2010-05-12 岡葉流通株式会社 保護梱包具

Also Published As

Publication number Publication date
WO2013061306A1 (fr) 2013-05-02
EP2771255A1 (fr) 2014-09-03
DE102011054883B3 (de) 2012-11-08

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