DE102019104935A1 - Film composite, film insert system and method for producing a film composite - Google Patents

Abstract

Shown and described is a multilayer film composite (1) as insulation packaging with at least one insulating film (2), wherein the insulating film (2) at least one foamed polymer component and optionally at least one further component and / or by foaming at least one polymer component optionally in the presence of at least one Another component is available, wherein the polymer component is a polyolefinic material, preferably polyethylene (PE) is provided.

Description

The invention relates to a multilayer film composite as insulation packaging or as part of an insulation packaging and a film-insertion system for use as insulation packaging. Moreover, the present invention relates to a method for producing a multilayer composite film.

In practice, insulation packages are used for storing, transporting and shipping temperature-sensitive products, in particular fresh foods such as meat, fish, but also medicaments and / or other products to be kept at a certain temperature level. If a cold chain is interrupted during transport and shipping, this can lead to spoilage of the products to be cooled, even to the dangers of health, if not enough or not always cooled products are consumed. For example, consumers' increasing tendency to order food online via the Internet creates a need for cost-effective insulation packaging that meets high demands for transportation and shipping at consistently low temperatures. Corresponding insulation packaging can in principle also be used to protect heated products, in particular heated foods, against cooling and to keep them at a certain temperature.

For storage, transport and shipping are currently mainly transport containers made of styrofoam used. Styrofoam boxes are used because of their low weight and good cooling, which require temperature-sensitive products. In addition, they have a high stability and can be used directly as a transport box.

A disadvantage of the above Styrofoam boxes, however, is that they require a comparatively large wall thickness in order to ensure the required insulation effect. This leads to correspondingly large dimensions of such boxes, which leads to greater space requirements for the storage of the boxes and also for the box transport. The boxes are only available in a few different formats. In addition, the high material stiffness of styrofoam boxes does not allow the boxes to be resized when the contents to be cooled or kept warm are changed. In practice, this regularly leads to the transport and shipping of temperature-sensitive goods in oversized styrofoam boxes, which is associated with an unnecessarily high space requirement for the storage of the boxes and also for the box transport.

Object of the present invention is to provide a novel way for storage, transport and / or shipping of temperature-sensitive products available, with excellent insulating properties to be ensured and the production of insulated packaging can be done in a simple and cost-effective manner. In addition, the formats of the insulated packaging should be easily adapted to individual user requirements and any sizes of the insulating packaging can be produced.

The above object is achieved by a multilayer composite film with the features of claim 1, by a method for producing a multilayer composite film according to claim 9 and by a film-inserting system having the features of claim 10. Advantageous embodiments of the invention are the subject of the dependent claims.

According to the invention, a multilayer film composite is proposed as insulation packaging, which has at least one insulating film. The insulating film has at least one foamed polymer component and optionally at least one further component or a further film constituent and / or is obtainable by foaming at least one polymer component optionally in the presence of at least one further component, wherein the polymer component is a polyolefinic material, preferably polyethylene (PE), is provided. The term "obtainable by" is to be understood in the sense of the invention such that the production of the insulating film may include, in addition to foaming, further treatment steps or process steps.

The film composite can be used in particular for the storage and / or transport of any cool or warm goods, for example for foods such as fish, meat, vegetables and fruits, or for medicines.

The film composite according to the invention is characterized in particular by a high insulating effect and a total compared to a transport container made of styrofoam lower total layer thickness, which leads to a smaller space requirement and thus lower costs for storage and transport of temperature-sensitive goods. In addition, the film composite can be produced and assembled in a simple and cost-effective manner. In particular, adapted to the needs, that is, the volume of material to be tempered, adapted formats and thus prevent storage and transport of goods in oversized transport containers, which is advantageous for economic and environmental reasons. In particular, it can be provided that the film composite is present as a substantially two-dimensional sheet, wherein a three-dimensional shape for receiving packaging and transport goods can be achieved by corresponding in particular manual deformation of the film composite. This is ensured by the mechanical deformation properties, in particular elastic properties, of the film composite according to the invention. Such a procedure is not possible in styrofoam boxes, because they have a certain fixed format size or three-dimensional shape due to the material stiffness. The film composite according to the invention thus represents, in particular, an alternative product to conventional transport containers made of styrofoam with improved properties. Finally, high hygiene requirements for insulating packaging for packaged goods, such as foodstuffs or medicaments, can be met, wherein the film composite can be at least substantially impermeable to liquids.

The foaming can be done using a chemical blowing agent and / or a physical blowing agent. Physical blowing agents have the property that they consist of low-boiling liquids and evaporate when heated by 100 ° C and / or as a result of pressure relief. Chemical propellants, however, usually consist of nitrogen-containing organic compounds which decompose by temperature effects of up to 300 ° C with elimination of nitrogen gas. For foaming the polymer component, the polymer component can be foamed in a liquid, in particular in thermoplastic, state with a suitable blowing agent to small gas-filled cells. With the addition of a surface-reactive additive and the surface work produced by the blowing agent, the surface tension is reduced and the foam state is stabilized. The subsequent polyreaction then causes a lasting solidification of the thermoplastic cell walls.

It may be provided as a foamed polymer component, a closed-cell and / or open-cell polymer foam. The cellular or cellular and / or foamed structure of the foamed polymer component requires that small gas bubbles, in particular air bubbles, are enclosed in the insulating film, which contribute to the insulating effect and reinforce it. The thermal conductivity coefficient of, for example, air is about 0.0262 W / (mK), with a composition of air with 21% oxygen and 78% nitrogen. In addition, the foamed structure contributes to a sufficiently high rigidity and dimensional stability of the insulating film and thus of the film composite according to the invention.

Advantageously, improved thermal insulation properties are achieved by the film composite of the invention over the known transport containers made of Styrofoam. Thus, in use, the temperature level in the interior of the film composite according to the invention can be kept constant, for example, in a range between -5 ° C. to 5 ° C. for at least 24 hours, preferably between 24 and 50 hours and in particular at least substantially for 48 hours. This ensures, for example, a cooling of food over a period of time that is less than the regular shipping time, for example, in online trading.

In a particularly preferred embodiment, the apparent density of the foamed polymer component is between 5 and 500 kg / m ³ . Preferably, the bulk density of the foamed polymer component is between 10 to 300 kg / m ³ , more preferably between 15 to 100 kg / m ³ and in particular at least substantially between 15 to 35 kg / m ³ . The bulk density describes the apparent or geometric density or density, that is the density of a porous solid based on the volume including the pore spaces.

A high proportion of the porosity of the foamed polymer component ensures a high heat transfer resistance of the insulating film. The higher the heat transfer resistance, the better the thermal insulation property of the film composite. Advantageous insulating properties can be realized if the porosity of the foamed polymer component is between 10% to 95%, preferably between 15% to 60%, more preferably between 20% to 50% and in particular at least substantially between 30% and 40%.

The true density of the polymer component may be between 700 to 2,000 kg / m ³ , preferably between 800 to 1,200 kg / m ³ , more preferably between 900 to 1,000 kg / m ³ and in particular at least substantially between 915 to 980 kg / m ³ . Polyethylene, for example, can be provided in various forms of high and low density and used or provided according to the invention as a foamed polymer component.

According to the invention, a distinction is made between the polymer component which is foamed and the foamed polymer component. The polymer component is ultimately understood to mean the starting component, which is subsequently converted by foaming into the foamed polymer component. The molecular weight of the polymer component, ie the starting material, is in particular between 10 and 80 kg / mol, preferably between 20 to 40 kg / mol. The melting point of the polymer component may be between 40 ° C and 300 ° C, preferably between 100 ° C to 200 ° C, amount.

In a further particularly preferred embodiment of the inventive concept, it is provided that the film composite has at least one filler-containing insulation layer. The filler in the insulating layer may be considered as insulating means, preferably having a cellular or foamed structure. In addition, the filler can contribute to the stability of the film composite. By combining the insulation film with a filler-containing insulation layer can be achieved very good thermal insulation properties of the film composite according to the invention.

To increase the thermal resistance, the insulation layer may comprise at least one air cushion layer, in particular an air bubble film. The air cushion layer may comprise a polyolefinic material and / or be obtainable from a polyolefinic material. Polyethylene is preferably used as the polyolefinic material. An air cushion layer is to be understood in particular as a layer which encloses air in cavities or cushions, wherein, preferably, a large number of cavities is provided. Also included in pads, pores or cells of the bubble wrap film may be another gas such as nitrogen and / or oxygen, particularly having a low coefficient of thermal conductivity in the range of 0.01 to 0.028 W / (mK). As a bubble wrap is preferably an elastic and at least two-ply plastic film to be understood with enclosed between the films gas cavities, which can be used for insulation. The bubble wrap may be constructed of a two-ply welded polyethylene, having a smooth cover sheet and a second ply into which circular air cushions are regularly incorporated by means of a nub cylinder and a vacuum roll. The trapped gas volume provides very good insulating properties.

Most preferably, the insulation layer has at least two air cushion layers, wherein, more preferably, at least one filler can be arranged or introduced between two adjacent air cushion layers. The filler can be enclosed in particulate or granular form between the air cushion layers. By combining air cushion layers with at least one filling layer between the air cushion layers, very good thermal insulation properties of the insulation layer can be achieved.

Alternatively or additionally, the air cushion layer as such may already have a filler, in particular wherein the filler may be introduced into in particular closed cavities, cavities or cells of the air cushion layer. Thus, a filler can be introduced into a part or all of the cushions or cavities of the air cushion layer and fill these cavities at least substantially completely or partially, wherein, preferably, in addition to the filler in the cavities of the air cushion layer and air can be enclosed.

Preferably, the insulating layer and / or the insulating film and / or the foamed polymer component has a thermal conductivity of less than 0.2 W / mK, preferably between 0.001 to 0.2 W / mK, more preferably between 0.005 to 0.15 W / mK and preferably 0.009 to 0.05 W / mK, on. The thermal conductivity of the film composite according to the invention may be of the same order of magnitude or may assume the same values.

In order to further improve the thermal insulation properties, the film composite may have at least one oxygen barrier layer, wherein, preferably, the oxygen barrier layer is metallic and / or has at least one metal. A functional barrier is to be understood as meaning a layer in which the mass transport process of a migrating substance, for example air, is prevented or delayed by the film composite into the packaged product, for example food. In particular, an oxygen barrier layer is to be understood as meaning a layer through which gaseous oxygen and / or air can not pass or which has very high barrier properties to oxygen and / or air and / or to liquids.

Metal vapor deposition of the insulation film allows an oxygen barrier layer to be realized. In particular, a metal evaporation with aluminum is provided. Thus, the oxygen barrier layer can form a surface layer of the insulating film. The oxygen barrier layer and the insulation film then form a composite.

In a further preferred embodiment of the invention, the film composite has at least one printing film. The printing film may comprise a polyolefinic material and / or be obtainable from a polyolefinic material. As polyolefinic material in particular polyethylene is provided. A printing film in the context of the present invention is to be understood as meaning a film which increases the stability of the film composite, in particular the resistance to crushing and / or damage. By the printing film, the stiffness, preferably the flexural rigidity, of the film composite can be increased by up to 30%. The printing film may have on the outside a plurality of projections and / or depressions. Between Protrusions and / or depressions may be formed by further gas cavities in order to further improve the thermal insulation properties. For example, it is possible that the printing film is connected to the insulating film to form such gas cavities.

The printing film can be arranged between the insulating film and an outer layer of the film composite, in particular between the oxygen barrier layer and the outer layer. Such an arrangement of the printing film requires a high stability of the film composite.

For example, an air cushion may be formed between the printing film and the oxygen barrier layer, wherein, preferably, the air cushion is formed between protrusions and recesses of the printing film and the adjacent insulating film.

Furthermore, the film composite can have at least one outer layer, wherein the outer layer comprises at least one polyolefinic material and / or is obtainable from at least one polyolefinic material. Optionally, further components may be provided in the outer layer. The outer layer, which is provided on the outside of the film composite, is designed in particular as an outside protection of the film composite, so that the aforementioned layers or films of the film composite are not exposed directly to external stresses.

Advantageously, the film composite has two outer layers, wherein the outer layers comprise a polyolefinic material and / or are obtainable from at least one polyolefinic material. Optionally, further components may be provided in the outer layer. The insulating film and the insulating layer are preferably arranged between the two outer layers. In particular, the outer layers protect the insulating film and the insulating layer from external stresses.

Furthermore, the outer layer can be printable. By printing the outer layer, the recipient address, the shipping company and / or optionally further information can be printed, in particular for the shipment of packaging. In addition, an individually designable appearance of the film composite can be generated, so that a clear assignment of the film composite - for example, to a company or the like - is possible.

The film composite may have a total layer thickness between 200 μm to 10 mm, preferably at least 400 μm. The total layer thickness is thus substantially lower than, for example, the thickness of a styrofoam thermobox, which is about 3 cm. In principle, however, the total layer thickness of the film composite according to the invention can also be more than 10 mm.

In a further preferred embodiment, the air cushion layer in the insulating layer of the composite film according to the invention has a layer thickness between 20 to 500 .mu.m, preferably between 50 to 300 .mu.m, more preferably between 80 to 250 .mu.m and in particular at least substantially between 100 to 180 .mu.m.

More preferably, the insulation layer can have a total layer thickness between 100 μm to 8 mm, preferably between 30 μm to 5 mm and more preferably between 500 μm to 1 mm. The largest proportion of the layer thickness of the insulation layer can also be attributed to the layer thickness of the filler in the insulation layer, which is preferably enclosed between two air cushion films or air cushion layers. The layer thickness of the insulating layer may also be higher than the above-mentioned values given a larger amount of filler.

Otherwise, the insulating film may have a layer thickness of between 20 and 500 .mu.m, preferably between 50 and 300 .mu.m, more preferably between 100 and 250 .mu.m and in particular at least substantially between 150 and 200 .mu.m. Again, however, the possibility is not excluded that the layer thickness of the insulating film is above the aforementioned values.

Further preferably, the at least one outer layer has a layer thickness between 15 to 300 .mu.m, preferably between 20 to 150 .mu.m, more preferably between 40 to 100 .mu.m and in particular at least substantially between 50 to 70 .mu.m.

Moreover, it is provided in a particularly preferred embodiment of the invention that the film composite, in particular at the outer edges, is welded. In this case, it can be provided, in particular, that the outer layers of the film composite are welded together. It is also possible to weld the outer layers to the insulating film, the insulating layer and / or the printing film. As a result, a high stability of the film composite is achieved.

Preferably, the film composite is assembled in a folding carton. The film composite according to the invention is then in the form of a substantially two-dimensional sheet, preferably manually by bending over, folding over and / or folding over sections of the film composite relative to each other can be transformed into a substantially three-dimensional body, the film composite has only in the three-dimensional shape a receiving area for receiving a cool or keep warm goods. By analogy with a folding carton, the three-dimensional shape can be generated manually by reshaping sections of the film composite onto further welds of the film composite.

For this purpose, in addition to the welding at the outer edges, at least one further welding, in particular a transverse welding, of the film composite may be provided in the region between the outer edges, wherein composite regions of the film composite that are foldable and / or hingedly connected to one another by at least one further welding are obtained. The insulation film can also be bonded directly or indirectly, in particular at the edges and / or over the entire surface, to an outer layer. By gluing the insulating film to the outer layer, a strong bond is provided between the insulating film and the outer layer.

Furthermore, a composite of the insulating film and the outer layer bonded to the insulating film can be welded to a further outer layer. Accordingly, it can be provided that initially a composite of the insulating film and an outer layer is produced, to which the insulating layer is applied. Subsequently, the composite is then welded to a further outer layer, so that the insulation layer between the composite and the other outer layer is immobilized. This allows a simple and cost-effective production of the film composite according to the invention.

In a further embodiment of the invention, two sections or composite regions of the film composite according to the invention can be stacked on one another and, in particular, welded and / or glued at the edge, in particular for forming a bag-like receptacle for a stored and / or transported good. In particular, a section of the film composite protruding beyond the bag-like receptacle can form a tab which is provided for closing the bag-shaped receptacle. Seen in this way, the film composite can be used directly as a shipping bag, wherein the packaged goods can be inserted into the receptacle. Thus, the packaged product is surrounded on all sides by the film composite and the required thermal insulation properties can be ensured.

In this context, an inventive method for producing a multilayer composite film according to one of the embodiments described above, be provided that the insulation film indirectly via the printing film or directly, especially at the edges and / or over the entire surface, glued to an outer layer and / or welded, wherein the composite formed from the insulating film and the outer layer bonded to the insulating film is welded to another outer layer. Before the welding with the further outer layer, the insulating layer is placed on the composite and fixed in position by welding the composite with the other outer layer.

Moreover, the present invention relates to a film-inserting system as insulating packaging, with an insert receptacle as outer packaging and with an inserted into the insert receptacle and / or associated with the deposit recording deposit of a film composite of the type described above as an inner packaging. The film-insertion system can thus be used for storage and / or transport of temperature-sensitive goods, such as food, blood or drugs. In this case, an additional, in particular, mechanical protection of the film composite and, in addition, even better thermal insulation are achieved by the insert receptacle as outer packaging.

In particular, cold accumulators and / or cooling elements can be introduced next to a good to be cooled in the interior of the film insert system to extend the duration over which a low temperature of the material is ensured in the film-insertion system.

In a particularly preferred embodiment, the outer packaging paperboard, preferably corrugated cardboard, on and / or consists thereof. In particular, a folding box is provided as outer packaging. Corrugated board is a pulp product used predominantly in the packaging industry, which is both light and relatively stable based on its total weight. In particular, the paperboard has a layer thickness in the range of 0.3 to 15 mm, preferably in the range of 2 to 8 mm.

Alternatively, the outer packaging may also be formed as a polyolefinic plastic film. It can be provided as a protective bag, a plastic bag in which the film composite is inserted as an insert for transport.

In a further, particularly preferred embodiment of the inventive concept, it is provided that the film composite provided as an insert has at least two sections or composite regions which are foldable and / or hingedly connected together by at least one weld, so that it can be folded and / or flapped the composite regions relative to each other is possible to form a three-dimensional shape of the insert corresponding to the geometry of the insert receptacle. Preferably, the insert after forming can be approximately accurately fit into the outer packaging. Particularly preferably, the insert in the formed three-dimensional state wall, floor and / or cover parts, whose shape and dimensions are adapted to the size of corresponding wall, bottom and / or lid parts of the outer packaging.

In particular, the film composite has at least one welding foldable and / or hinged together composite areas to form by folding and / or folding the composite regions relative to each other at least two separate by at least one composite region receiving areas for a packaged. For example, two composite regions forming two cover parts of the insert, wherein in the use state of the film insertion system according to the invention, a receiving area between a bottom of the insert and a first cover part and a second receiving area between the first cover and a second cover part may be formed. In particular, the cover parts are each attached to a side wall of the insert via a weld and formed hinged to each other.

Between the insert and the outer packaging and / or inserted into the insert may be provided a protective film, preferably of a polyolefinic material, more preferably of polyethylene. The protective film can prevent, for example, leakage of liquids and / or protect the film composite from contacting it with a liquid.

Particularly preferably, the insert, preferably in the three-dimensional form, non-destructively releasably connected to the insert receptacle.

Preferably, the side parts of the insert in the three-dimensional state of the insert are non-destructively detachable, for example via a hook and loop fastener, connected to each other or are unconnected against each other.

The above-described embodiments of the invention may be combined as needed, although not expressly described in detail. The disclosure of the invention is not limited to the combinations of inventive features given by the selected paragraph formatting.

Further features of the present invention will become apparent from the following description of the embodiments of the invention with reference to the drawings and the drawings themselves. All described and / or illustrated features alone or in any combination form the subject of the present invention, regardless of their summary in the claims or their relations.

• 1A eine schematische Querschnittsdarstellung eines erfindungsgemäßen mehrschichtigen Folienverbundes,
• 1B eine schematische Querschnittsdarstellung einer weiteren Ausführungsform eines erfindungsgemäßen mehrschichtigen Folienverbundes,
• 1C eine schematische Querschnittsdarstellung einer dritten Ausführungsform eines erfindungsgemäßen mehrschichtigen Folienverbundes,
• 2A eine schematische perspektivische Darstellung eines erfindungsgemäßen Folien-Einlagesystems,
• 2B eine schematische perspektivische Darstellung einer äußeren Verpackung des in 2A gezeigten Folien-Einlagesystems,
• 2C eine schematische perspektivische Darstellung des erfindungsgemäßen Folien-Einlagesystems aus 2A mit Verpackungsgut,
• 3 eine schematische Draufsicht auf eine Einlage für das in 2A gezeigte Folien-Einlagesystem in einem im Wesentlichen zweidimensionalen Zustand der Einlage,
• 4 eine schematische perspektivische Darstellung der Einlage aus 2A nach dem Teilumformen der Einlage in einem im Wesentlichen dreidimensionalen Zustand der Einlage,
• 5 eine schematische perspektivische Darstellung einer weiteren Ausführungsforme eines erfindungsgemäßen Folienverbundes und
• 6 eine Darstellung des Temperaturverlaufes über die Zeit beim Einsatz des erfindungsgemäßen Folien-Einlagesystems.

The invention will be explained in more detail below with reference to the figures; show it

• 1A a schematic cross-sectional view of a multilayer composite film according to the invention,
• 1B a schematic cross-sectional view of another embodiment of a multilayer composite film according to the invention,
• 1C a schematic cross-sectional view of a third embodiment of a multilayer composite film according to the invention,
• 2A a schematic perspective view of a film insertion system according to the invention,
• 2 B a schematic perspective view of an outer packaging of in 2A shown film insert system,
• 2C a schematic perspective view of the film insertion system of the invention 2A with packaged goods,
• 3 a schematic plan view of an insert for the in 2A shown film-insertion system in a substantially two-dimensional state of the insert,
• 4 a schematic perspective view of the insert 2A after the partial forming of the insert in a substantially three-dimensional state of the insert,
• 5 a schematic perspective view of another embodiment of a film composite according to the invention and
• 6 a representation of the temperature profile over time when using the film insertion system according to the invention.

In 1A is a schematic cross-sectional view of a film composite 1 shown. The film composite 1 has at least one insulation film 2 on. The insulation film 2 has at least one foamed polymer component and optionally at least one further component. Not shown is that the foamed polymer component by foaming at least one polymer component, in particular with a chemical and / or physical blowing agent, optionally in the presence of at least one further component.

At the in 1A illustrated embodiment is provided as a polymer component is a polyolefinic material, preferably polyethylene. It is not shown that the foamed polymer component has an open-pored or closed-pore cellular structure, in which a plurality of small air bubbles or pores is enclosed.

The bulk density of the foamed polymer component is in the illustrated embodiment between 15 to 35 kg / m ² . In further embodiments, the bulk density of the foamed polymer component may be between 5 to 500 kg / m ³ . The porosity of the foamed polymer component is between 30% to 40%. In further embodiments, it may be provided that the porosity of the foamed polymer component is between 10% to 95%. The true density of the unfoamed polymer component in the illustrated embodiment is between 915 and 980 kg / m ³ . In further embodiments, the true density of the polymer component may range between 700 to 2000 kg / m ³ .

The molecular weight of the polymer component is between 20 to 40 kg / mol, wherein the melting point of the polymer component may be between 100 ° C to 200 ° C.

At the in 1A and 1C illustrated embodiments, the film composite 1 at least one filler-containing insulation layer 3 on. In 1A is a filler layer 5 provided or the filler 5 in the insulation layer 3 edged.

At the in 1A embodiment shown has the insulation layer 3 at least one air cushion layer 4 on. The air cushion layer 4 is designed as a bubble wrap of a polyolefinic material. Polyethylene is preferably provided as the polyolefinic material. In the air cushion layer 4 is provided a plurality of air-filled cavities or pores. In 1C is shown that the insulation film 2 also directly with the filler layer 5 can be connected.

Furthermore, in 1A shown that the insulation layer 3 at least two air cushion layers 4 wherein the filler 5 between the air cushion layers 4 is arranged or enclosed.

In the 1A and 1B is shown that the film composite 1 at least one oxygen barrier layer 6 can have. The oxygen barrier layer 6 may comprise at least one metal or consist of a metal. The oxygen barrier layer 6 prevents the passage of air. The oxygen barrier layer 6 is preferably by Metallevampfung of the insulating film 2 available with aluminum. The oxygen barrier layer 6 is thus part of the insulation film 2 ,

1B shows that the film composite 1 basically only by the insulation film 2 can be formed.

Furthermore, the film composite 1 according to 1A at least one printing film 7 on. The printing foil 7 is made of a polyolefinic material, in the present case polyethylene, and also ionized. The print film layer 7 increases the stability of the film composite 1 ,

Not shown is that the printing foil 7 a plurality of projections and / or depressions, so ultimately a structured surface may have. Due to the textured surface can between the printing film 7 and the oxygen barrier layer 6 be formed at least one air cushion.

The printing foil 7 is according to 1A between the insulation film 2 and an outer layer 8th of the film composite 1 arranged. The outer layer 8th has a polyolefinic material. Not shown is the outer layer 8th in addition to the polyolefinic material, in particular polyethylene, optionally at least one further component may have.

Not shown is that the insulation film 2 indirectly or directly, especially at the edges and / or over the entire surface, with an outer layer 8th can be glued.

Both from the 1A as well as from the 1C it can be seen that the film composite 1 two outer layers 8th having, wherein the insulating film 2 with the oxygen barrier layer 6 and the insulation layer 3 between the outer layers 8th are arranged. In the in 1A illustrated embodiment is also between the outer layers 8th the printing foil 7 arranged. The outer layers 8th on the outside limit the film composite 1 , Not shown is the outer layer 8th is printable.

The in 1A illustrated film composite 1 has a total layer thickness of, for example, at least 2 mm, in particular of at least 5 mm. Basically, the total layer thickness of the film composite 1 between 200 .mu.m to 10 mm.

The air cushion layer 4 has a layer thickness of for example 150 microns. In further embodiments, the layer thickness of the air cushion layer 4 in the range between 20 to 500 microns.

The layer thickness of the insulation layer 3 is in the illustrated embodiment, for example, at least 2 mm. The layer thickness of the insulation layer 3 can basically be between 150 μm to 10 mm or even more.

The insulation film 2 has, for example, a layer thickness of 180 .mu.m, wherein in further embodiments, not shown, the layer thickness may be between 20 and 500 .mu.m or more.

The in the 1A and 1C illustrated outer layers 8th each have a layer thickness between 50 to 70 .mu.m, wherein in further embodiments, the layer thickness between 15 to 300 microns or more may be.

Preferably, the film composite 1 obtained by welding the outer layers 8th , the insulation layer 3 , the insulation film 2 and the printing foil 7 together.

2A shows a foil-insertion system 14 as insulated packaging. The foil insertion system 14 has an insert holder 17 ( 2 B) as outer packaging 15 and one in the deposit 17 introduced and with the deposit recording 17 linked deposit 16 from a film composite 1 as inner packaging. The film composite 1 corresponds to the in 1A shown embodiment.

As a deposit 17 a corrugated cardboard is provided which may have a layer thickness of at least 3 mm, preferably at least 5 mm. In principle, it is possible (not shown) to provide an outer packaging made of a different material, in particular of plastic, at the location of a corrugated cardboard. An outer packaging may also be formed by a plastic film.

The deposit 16 is in 3 shown in a substantially two-dimensional state, wherein from the film composite 1 formed deposit 16 several about welding 11 Foldable and / or hinged interconnected areas 12 has to by manually folding and / or folding the composite areas 12 relative to each other a three-dimensional shape of the insert 16 , as for example 4 it can be seen, corresponding to the geometry of the insert receptacle 17 , such as in 2 B shown to train.

The composite areas 12 form in the three-dimensional state of the insert 16 ( 4 ) a bottom part 12a , four side panels 12b and two lid parts 12c having. By manual bending or folding at the other welds 11 becomes the three-dimensional shape of the insert 16 reached.

The dimensions and geometries of the bottom part 12 , the side parts 12b and the lid parts 12c the deposit 16 correspond to the dimensions and geometries of a floor part 17a and from side parts 17b the deposit 17 , As a result, the outer volume and the geometry of the insert corresponds 16 in the three-dimensional state, the internal volume and the geometry of the insert receptacle 17 so that it is possible the deposit 16 with as little play as possible in the deposit 17 use.

The side parts 12b can in the three-dimensional state of the insert 16 after insertion into the insert holder 17 For example, via a hook and loop fastener be non-destructively releasably connected to each other or unobtrusive against each other.

In 2C is shown that the deposit 16 in the three-dimensional state, a packaged good 18 , For example, a food to be cooled, record. By folding and / or folding the composite areas 12 becomes at least a receiving area for the packaged goods 18 educated. In the embodiment shown, the insert 16 two lid parts 12c on, being between the bottom part 12a and a first lower lid part 12c a first receiving area for the packaged goods 18 and between the folded lid parts 12c a further receiving area for another packaged goods can be formed.

Not shown is that between the deposit 16 and the deposit taking 17 and / or inserted into the deposit 16 a, preferably of a polyolefinic material, more preferably polyethylene, existing protective film may be provided.

The film composite 1 according to 3 in addition to welding 10 on all outer edges 9 further welding 11 in the area between the outer edges 9 on. By the further welding 11 become the compound areas 12 foldable to each other and / or hinged together.

In 5 an embodiment is shown in which the film composite 1 a bag-like receptacle 13 forms for a chilled or holding goods. A section of the film composite 1 can a tab 13a make up to the bag-like receptacle 13 to close.

6 shows a representation of the temperature profile over time when using the foil-insertion system 14 out 2A , The insole recording 17 had a length of 39 cm, a width of 25 cm and a height of 12 cm.

As packaged goods 18 was a block of frozen water in the middle area of the deposit 16 formed receiving area, which is cuboid-shaped and a length of 10 cm, a width of 5 cm and a height of 3 cm had. The core temperature 19 of the packaging good 18 was in the static state of the foil-insertion system 14 measured by a temperature sensor.

Other temperature sensors were in the interior of the insert 16 spaced from the packaged goods 18 for measuring the internal temperature 20 and outside of the deposit 17 for measuring the ambient temperature 21 arranged.

Before filling the foil insertion system 14 the insert was cooled to -5 ° C. The packaged goods 18 showed a temperature of -17 ° C during filling. The ambient temperature 21 was constant at 23 ° C. After inserting the packaged goods 18 became the deposit 16 by closing the lid parts 12c closed. Subsequently, the deposit recording 17 as outer packaging 15 closed. Then, the change of the temperatures was measured over a period of 48 hours.

In 6 shows the temperature line 21 the ambient temperature; the line 20 represents the internal temperature in the inclusion of the insert 16 of the foil insertion system 14 and the line 19 represents the core temperature of the packaged goods 18 In the graph shown, times are given on the x-axis to document the duration of the temperature measurements.

From the experimental results presented it follows that after filling the foil-insert system 14 with the packaged goods 18 the core temperature 19 of the packaging good 18 in a period of 6 hours from -17 ° C to 0 ° C rise. Subsequently, the core temperature remained 19 constant for more than 40 hours at approx. 0 ° C.

The test results prove a very good insulating effect of the foil insertion system 14 , wherein over a period of at least 40 hours excellent thermal insulation properties could be achieved.

LIST OF REFERENCE NUMBERS

1

film composite

2

insulation blanket

3

insulation layer

4

Air cushion layer

5

filler

6

Oxygen barrier layer

7

printing film

8th

outer layer

9

outer edge

10

welding

11

welding

12

related parties

12a

the bottom part

12b

side panel

12c

cover part

13

admission

13a

flap

14

Foil liner system

15

packaging

16

inlay

17

deposits recording

17a

the bottom part

17b

side panel

18

packaged goods

19

core temperature

20

internal temperature

21

ambient temperature

Claims (10)

Multilayer composite film (1) as insulation packaging with at least one insulating film (2), wherein the insulating film (2) has at least one foamed polymer component and optionally at least one further component and / or is obtainable by foaming at least one polymer component, optionally in the presence of at least one further component, wherein as polymer component a polyolefinic material, preferably polyethylene (PE), is provided. Multilayer film composite (1) after Claim 1 , characterized in that the film composite (1) has at least one filler-containing insulating layer (3), wherein, preferably, the insulating layer (3) at least one air cushion layer (4), in particular an air bubble film has. Multilayer film composite (1) after Claim 2 , characterized in that the insulating layer (3) has at least two air cushion layers (4), wherein a filler (5) between the air cushion layers (4) is arranged. Multilayer composite film (1) according to one of the preceding claims, characterized in that the film composite (1) has at least one oxygen barrier layer (6), wherein, preferably, the oxygen barrier layer (6) is metallic and / or has at least one metal. Multilayer composite film (1) according to one of the preceding claims, characterized in that the film composite (1) has at least one printing film (7), wherein, preferably, the printing film (7) between the insulating film (2) and an outer layer (8) of Foil composite (1) is arranged. Multi-layer film composite (1) according to one of the preceding claims, characterized in that the film composite (1), in particular at the outer edges (9), is welded. Multi-layer film composite (1) according to one of the preceding claims, characterized in that the film composite (1) is assembled in a folding carton. Multilayer composite film (1) according to one of the preceding claims, characterized in that in addition to the weld (10) at the outer edges (9) at least one further welding (11), in particular a transverse welding, of the film composite (1) in the region between the outer edges (9) is provided, wherein by the further welding (11) foldable and / or hinged interconnected composite regions (12) of the film composite (1) are obtained. Foil inserting system (14) as insulating packaging, with an insert receptacle (17) as outer packaging (15) and with an insert (16) introduced into the insert receptacle (17) and / or connected to the insert receptacle (17) made of a film composite (1 ) according to any one of the preceding claims as inner packaging. Method for producing a multilayer composite film (1) according to one of the preceding claims, wherein the insulating film (2) is bonded to an outer layer (8) and optionally further layers and / or films to form a composite, wherein the insulation layer (3 ) and then the composite and the insulating layer (3) with a further outer layer (8) are welded.

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