EP2830973A2

EP2830973A2 - Inflatable protective packaging

Info

Publication number: EP2830973A2
Application number: EP13716199.8A
Authority: EP
Inventors: Thomas Blum
Original assignee: Maria Soell High Technology Films GmbH
Current assignee: Maria Soell High Technology Films GmbH
Priority date: 2012-03-30
Filing date: 2013-03-22
Publication date: 2015-02-04
Also published as: HK1206696A1; WO2013143674A3; DE102012006398A1; WO2013143674A2

Abstract

The present invention relates to protective packaging that can be precisely adapted to at least part of the outer shape of goods to be packaged, said protective packaging consisting of at least one inflatable cushion element constructed from a multi-layer plastic film, said cushion element being divided into correspondingly subdivided chambers by at least one sealing seam, said invention further relating to the use of such multi-layer synthetic films for producing said protective packaging, a method for producing such protective packaging and the use thereof for the packaging of various goods.

Description

An inflatable protective packaging

The present invention relates to a use of up to 11 layers having plastic film for producing an inflatable protective packaging, the at least at least a portion of the outer shape of a goods to be packaged exactly adaptable and at least one inflatable to an air cushion, at least one inflatable seal in at least 2 inflatable Chambers is divided element, such a package produced from a multilayer plastic film, a method for producing such a package, their use for the packaging of various goods and an inflated packaging with a packaged good or a packaged goods with such protective packaging.

For the protection of goods to be packaged, polyethylene bubble wrap films are often used, which have a multiplicity of small, in each case airtightly closed knobs and the packaged product

Protect damage. However, these have the disadvantage that the damping effect of the air cushion is not sufficient to protect especially heavy or slightly fragile objects sufficiently from shocks.

From the prior art, e.g. WO 02/055293 A2, US 2005/0202212 A1 and US Pat. No. 5,427,830 also disclose air-cushion films which consist of

contiguous, equal-sized, air-filled chambers and can be used to fill in transport packaging.

A disadvantage of these known from the prior art packaging is that they are not individually adaptable to the goods to be packaged and therefore, for.

leave too much room within a packaging container to protect the packaged goods reliably during transport. On top of that, that

Plastic material from which these packages are made, often over

have inadequate mechanical properties, so the well-known

Air cushion packaging, especially when using goods with a high Weight or sharp edges are not sufficiently strong and the pads can burst.

There is therefore a need for packaging which ensures optimum protection for the goods to be packaged and is particularly suitable for packaging heavy, sharp-edged, bulky or shock-sensitive goods.

It was therefore an object of the present invention to provide a packaging which offers improved protection for a large number of goods to be packaged, in particular particularly sensitive and / or heavy goods.

This object is achieved by providing an inflatable package (1) comprising at least one air cushion inflatable element (2) made from a multilayer plastic film, characterized in that the package (1) is inflated to at least a portion of the outer shape of a package therein Good is exactly customizable and at least one element (2) over

at least one sealed seam (3) into at least two, inflatable, possibly

divided communicating chambers (4) is resolved.

The packaging according to the invention is preferably characterized in that the inflatable element is constructed from a multilayer plastic film having a high puncture resistance, preferably at least 200 N, more preferably at least 300 N, most preferably at least 400 N, determined according to DIN 53373.

Furthermore, it is preferred that each sealed seam of the packaging has a seal strength of preferably at least 30 N / 15 mm, particularly preferably at least 50 N / mm, very particularly preferably at least 60 N / 15 mm, measured according to DIN 55529.

Preferably, the inflatable element has at least one closable

Air intake device, preferably comprising an air inlet channel and an air inlet opening. The inflatable element may be inflated by the inlet of inert gas, preferably air, through the air inlet opening, and preferably be sealed by heat sealing in the region of the air inlet channel.

Subsequently, the remaining air inlet device, preferably by punching, be separated after inflation from the closed seal there.

In a preferred embodiment of the packaging according to the invention the inflatable element is divided by at least one sealed seam into at least two inflatable chambers, wherein optionally the two chambers are interconnected by at least one connecting channel in this sealed seam area and preferably at least one of the chambers has an air inlet device. Regardless of the number of chambers in which the inflatable element is divided, at least two chambers, preferably each chamber, are connected to at least one further chamber via a connecting channel in the region of the sealed seam.

In a preferred embodiment, at least a portion of the inflatable connection channels between the chambers may be closed by heat sealing after inflation and closure of the inflatable element, these chambers then no longer being in communication. In a further preferred embodiment, all connection channels between the chambers remain even after inflation and closing of the element or are closed.

Preferably, the inflatable chambers may have a different configuration, such as a rectangular, square, circular, elliptical, triangular or rhomboidal shape.

If an inflatable chamber is completely separated from each other chamber by sealing seams, it has an air inlet device.

The packaging according to the invention can be exactly adapted by its design, in particular by the division of the inflatable element via sealing seams in at least two inflatable possibly communicating chambers at least to a portion of the outer shape of the goods to be packaged. This means that the design and layout of the inflatable element are such that the Packaging in the inflated state is exactly adapted to at least a portion of the outer shape of the packaged goods, and so the packaged good at least partially, optionally to more than 75% and thus almost completely protected by exact enclosure.

In a preferred embodiment, the inflatable packaging according to the invention is completely and exactly adaptable to the entire external shape of the material to be packaged.

In addition, since all seal seams of the chambers of the inflatable element preferably have a high seal strength and the multilayer plastic film from which the package is constructed, has a high puncture resistance, the package according to the invention is robust and insensitive even when inflated and provides optimum protection for the Good packed in each handling such as storage, transport or distribution.

Preferably, the packaging according to the invention is further distinguished by the fact that the oxygen permeability of the multilayer plastic film or the element produced therefrom is at most 10 cm ³ / (m ² 24h bar), preferably at most 5 cm ³ / (m ² 24h bar), determined according to DIN 53380-2 at 23 ° C and 0% humidity.

Another object of the present invention is therefore also the use of such a multilayer plastic film with at least one listed below, at least 5-layer, preferably 7-layer, more preferably 9-layer, most preferably 11-layer structure for producing a package according to the invention.

The packaging material used is the multi-layered one

Plastic film at least monoaxially, preferably biaxially, stretched. By stretching, the puncture resistance of the multilayer plastic film can be increased. In a preferred embodiment, the multilayer plastic film used in the invention in the longitudinal and / or transverse direction in one

Stretch ratio of at least 1: 1, 5, preferably at least 1: 2, more preferably 1: 2 to 1: 4 stretched, since such a multilayer plastic film is characterized by a particularly high puncture resistance.

To achieve the above-mentioned low gas permeability, the multilayer plastic film used as packaging material has at least one gas barrier layer (c), preferably an air, oxygen and / or nitrogen barrier layer.

The gas barrier layer (c) is preferably made of at least one ethylene-vinyl alcohol copolymer, at least one polyvinyl alcohol, at least one homo- or copolyamide, or a mixture of at least two of these

Built up polymers.

If the gas barrier layer (c) of at least one ethylene-vinyl alcohol copolymer (EVOH) is constructed, this was preferably by in

substantial complete hydrolysis of a corresponding ethylene-containing polyvinyl acetate (EVAc). These fully hydrolyzed ethylene-containing polyvinyl acetates have a degree of saponification> 98% and an ethylene content of 0.01-80 mol%, preferably 1-50 mol%.

The content of the ethylene component in the ethylene-vinyl alcohol copolymer is preferably at most 50 mol%, more preferably at most 44 mol%, and most preferably 29-44 mol%.

If the gas barrier layer (c) is made up of at least one polyvinyl alcohol (PVOH), then this was preferably obtained by substantially complete hydrolysis of a polyvinyl acetate (PVAc) and has a saponification degree> 98% as fully saponified polyvinyl acetate.

Preferred homo- or copolyamides for the preparation of the gas barrier layer (c) are partially aromatic, amorphous or partially crystalline copolyamides, which may be present in the Mixture with at least one homopolyamide and / or at least one other copolyamide can be present.

These partially aromatic, amorphous or partially crystalline copolyamides are preferably prepared from aliphatic diamines of 2-10 carbon atoms, especially hexamethylenediamine, and aromatic dicarboxylic acids of 6-14 carbon atoms, e.g. Terephthalic acid or isophthalic acid, and / or from

aromatic diamines having 6-10 carbon atoms, especially p-phenylenediamine or m-xylenediamine, and aliphatic dicarboxylic acids having 6-14 carbon atoms, e.g. Adipic acid, prepared.

In a particularly preferred embodiment of the invention

Packaging is the gas barrier layer (c) of the plastic film used in the invention of at least one ethylene-vinyl alcohol copolymer, at least one amorphous polyvinyl alcohol and / or at least a partially aromatic, amorphous copolyamide or partially aromatic, partially crystalline copolyamide;

in particular based on at least one ethylene-vinyl alcohol copolymer.

In a further preferred embodiment of the packaging according to the invention, the multilayer plastic film used according to the invention also has a sealing layer (a), preferably composed of at least one thermoplastic olefin homo- or copolymer.

Preferably, thermoplastic olefin homopolymers or copolymers of α, β-unsaturated olefins having 2-10 carbon atoms and / or cyclo-olefin copolymers (COC) can be used to produce the sealing layer (a) of the multilayer plastic film.

Olefin homopolymers suitable as sealing layer polymers are preferably at least one polymer selected from the group consisting of ethylene homopolymers (polyethylenes, PE), preferably LDPE and HDPE, propylene homopolymers (polypropylenes, PP), butylene homopolymers (polybutylenes, PB) and isobutylene Homopolymers (polyisobutylenes, PIB) or mixtures of at least two of said polymers. With "LDPE" becomes low density polyethylene designated, which has a density in the range of 0.86-0.940 g / cm ³ and is characterized by a high degree of branching of the molecules. By "MDPE" is meant medium density polyethylene, the density may range between 0.926 and 0.940 g / cm ³ . By "HDPE" is meant high density polyethylene which has little branching of the molecular chain, the density may range between 0.941 and 0.97 g / cm ³ .

As the sealing layer polymers suitable olefin copolymers are preferably

Copolymers of ethylene and / or propylene and at least one α-olefin having at least 4, preferably 4-10, more preferably 4-8

Carbon atoms, most preferably copolymers of ethylene and / or propylene with at least one α-olefin selected from the group comprising butene, hexene and octene. The α-olefin content in the olefin copolymer is preferably at most 25% by weight, more preferably at most 15% by weight, each based on the total weight of the olefin copolymer.

Particularly suitable copolymers of ethylene and at least one α-olefin having at least 4 carbon atoms are LLDPE and / or mPE. By "LLDPE" is meant low density linear ethylene copolymers characterized by the presence of a linear backbone having side chains attached thereto and having a density in the range of 0.86 and 0.94 g / cm ³ . By "mPE" is meant ethylene copolymers which have been polymerized by means of metallocene catalysts and preferably have a density in the range of 0.88 and 0.93 g / cm ³ .

Particularly suitable copolymers of propylene are copolymers of propylene and at least one α-olefin having 2 or 4 to 6 carbon atoms, more preferably selected from the group comprising propylene-ethylene copolymers, propylene-butylene copolymers, propylene-isobutylene copolymers and Mixtures of at least two of said copolymers.

Particularly preferred for the preparation of the sealing layer (a) are ethylene homo- and / or copolymers, most preferably selected from the group consisting of LDPE, LLDPE and mPE and mixtures thereof, and in particular a blend of at least one low density ethylene homopolymer (LDPE) and at least one linear low density ethylene copolymer (LLDPE).

To produce the sealing layer (a) may also, in each case identical or different cyclo-olefin copolymers (COC), preferably in admixture with a

thermoplastic olefin homo- or copolymers of α, β-unsaturated olefins having 2-10 carbon atoms, are used. In the context of the production of a plastic film used according to the invention, the term "cycloolefin copolymer" or "COC" is understood to mean an amorphous copolymer which is obtained by copolymerization of cyclic (C 6 -C ₁₂ ) -olefin monomers, preferably

Norbornene or tetracyclododecene, with a (C2-C4) olefin such as ethylene.

Preferably, the cycloolefin copolymer is a (C6-C ₁ 2) -Cycloolefin- (C2-C4) - olefin copolymer, particularly preferably a norbornene / ethylene copolymer or a tetracyclododecene / ethylene copolymer, particularly preferably a norbornene / ethylene -Copolymeres.

The proportion of the structural units derived from at least one cycloolefin in the cycloolefin copolymer is preferably at least 50% by weight, particularly preferably at least 70% by weight, based on the total weight of the cycloolefin copolymer.

Particularly preferred as a sealing layer Polymers are mixtures of cyclo-olefin copolymers (COC) and thermoplastic olefin homo- or copolymers of α, β-unsaturated olefins having 2-10 carbon atoms, in which the proportion of the cycloolefin copolymer component at most 50 wt. %, preferably at most 40 wt .-%, and particularly preferably 20-35 wt.% Is.

The multilayer plastic film used in the invention may comprise one or more further internal layers composed of at least one of said thermoplastic olefin homo- or copolymers. In a preferred embodiment of the inflatable packaging according to the invention, the inventively used for this,

multilayer plastic film on at least five-layered construction.

This structure of the multilayer plastic film preferably has

(a) a sealing layer (a),

(b) at least one primer layer (b),

(c) at least one gas barrier inner layer (c);

(d) at least one primer layer (d), and

(E) an outer layer (s), preferably composed of at least one homo- and / or copolyamide or homo- and / or copolyester, preferably in the specified sequence of layers on.

The sealing layer (a) and the inner gas barrier layer (c) preferably have the composition of the polymer components already mentioned in each case for these layers. Additional layers may optionally be present between layers (a) and (b), (b) and (c), (c) and (d) and / or (d) and (e), respectively.

The multilayer plastic film used according to the invention may comprise, in addition to the adhesion promoter layers (b) and (d), one or more further adhesion promoter layers.

The adhesion promoter layers (b) and (d) and optionally further

Existing adhesion promoter layers may be the same or different.

As adhesion promoters customary adhesion promoter materials can be used.

Preferably, the adhesion promoter layers (b) and (d) and the

optionally further present adhesion promoter layers, in each case identical or different from one another, from at least one modified thermoplastic polymer, preferably from at least one modified polyolefin homo- or Copolymers, particularly preferably of at least one modified ethylene homo- or copolymers, which is modified with at least one organic acid or at least one organic acid anhydride, preferably with maleic anhydride.

In a preferred embodiment of the invention used

Multilayer film, the adhesive layers (b) and (d) an identical layer structure, preferably an identical layer thickness and / or an identical composition of the polymer component (s) on.

In a further preferred embodiment, the multilayer plastic film used according to the invention further comprises two, in each case to the

Gas barrier layer (c) adjacent, each independently constructed from at least one homo- and / or copolyamide layers (f) and (g), on.

In a preferred embodiment of the invention used

The resulting layers (f) and (g) have an identical layer structure, preferably an identical layer thickness and / or identical polyamide components and / or an identical composition.

For the preparation of the layer (s) as well as the optionally present layers (f) and (g) homo- and / or copolyamides are selected from the group of thermoplastic aliphatic, partially aromatic or aromatic homo- or copolyamides.

These homo- or copolyamides can be prepared from aliphatic diamines having 2-10 carbon atoms, in particular hexamethylenediamine, and / or aromatic diamines having 6-10 carbon atoms, in particular p-phenylenediamine, and from dicarboxylic acids such as aliphatic or aromatic dicarboxylic acids having 6-14 carbon atoms, such as Adipic acid, terephthalic acid or isophthalic acid are produced. Furthermore, homo- or copolyamides of one or more lactams with 4-10 carbon atoms, such as ε-caprolactam, can be prepared. Copolyamides may also be selected from the aliphatic and / or aromatic diamines, dicarboxylic acids and lactams are prepared, for example from hexamethylenediamine, adipic acid and ε-caprolactam (PA 6/66). Particularly preferred polyamides are PA 6, PA 12, PA 66, PA 61, PA 6T or corresponding co-polymers of at least two of said structural units, such as

for example, PA 6/66, or mixtures of at least two of said polyamides.

The layer (e) as well as optionally further contained layers (f) and (g) may be the same or different.

In a preferred embodiment of the invention used

The layer (e) and any further layers (f) and (g) present have at least one partially aromatic, amorphous or partially crystalline copolyamide, which may optionally be in admixture with at least one further homopolyamide and / or at least one further copolyamide. These partially aromatic, amorphous or partially crystalline copolyamides are preferably prepared from aliphatic diamines of 2-10 carbon atoms, especially hexamethylenediamine, and aromatic dicarboxylic acids of 6-14 carbon atoms, e.g. Terephthalic acid or isophthalic acid, and / or from aromatic diamines having 6-10 carbon atoms, especially p-phenylenediamine or m-xylenediamine, and aliphatic dicarboxylic acids having 6-14 carbon atoms, e.g. Adipic acid, prepared.

Very particularly preferred partially aromatic copolyamides for producing the layer (s) and the optionally present further layers (f) and (g) are, for example, PA 6I / 6T (from the monomers hexamethylenediamine, terephthalic and isophthalic acid) and MXD6 / MXDI (from the monomers m-xylenediamine, adipic acid and isophthalic acid), which preferably in admixture with another

Homopolyamide and / or at least one further copolyamide, particularly preferably at least one aliphatic homo- or copolyamide, very particularly preferably PA 6, are present.

The multilayer plastic film used according to the invention can, in addition to the layer (s) and the optionally further existing layers (f) and (g) a or several further layers composed of at least one homo- and / or copolyamide.

Homo- and / or copolyesters selected from the group of thermoplastic, aliphatic, partially aromatic or aromatic polyester homopolymers or copolymers can furthermore be used to produce layer (e). Such polyesters are derived from polyols, e.g. Ethylene glycol or 1, 4-butanediol and dicarboxylic acids or dicarboxylic acid derivatives such as adipic acid, and / or

Terephthalic acid. Preference is given to polybutylene adipate (PBA),

Polyethylene terephthalate (PET), polybutylene terephthalate (PBT) or the

corresponding co-polymers used. A particularly preferred polyester for the preparation of layer (e) is polyethylene terephthalate (PET).

In a preferred embodiment, the multilayer plastic film used according to the invention further contains at least one inner layer (h) preferably adjacent to the sealing layer (a), preferably composed of at least one of the abovementioned thermoplastic olefin homo- or copolymers.

Preferably, the layer (h) has a different polymer composition than the sealing layer (a). Preferably, the layer (h) has a higher

Softening point as the layer (a).

In a preferred embodiment, the layer (h) is based on at least one ethylene homopolymer or copolymer, more preferably on at least one LDPE and / or LLDPE, and in particular on at least one linear low density ethylene copolymer (LLDPE).

In a further preferred embodiment, the layer (h) is based on at least one ethylene homo- or copolymers and / or at least one propylene homo- or copolymers, more preferably on at least one propylene copolymer. In a preferred embodiment, the multilayer plastic film used according to the invention has an at least eight-layered, particularly preferably at least nine-layered layer structure. In this embodiment, the plastic film preferably has the layers (a), (h), (b), (f), (c), (g), (d) and (e), preferably in the specified sequence of layers.

In this embodiment, the multilayer plastic film, preferably in the specified layer sequences, preferably

(a) a sealing layer (a) composed of at least one

thermoplastic olefin homo- or copolymers, preferably ethylene homo- or copolymers, more preferably selected from the group consisting of LDPE, LLDPE and mPE and mixtures thereof;

(h) a layer (h) composed of at least one thermoplastic olefin homo- or copolymer; preferably on at least one ethylene homo- or copolymers, more preferably on at least one LDPE and / or LLDPE, and in particular on at least one linear low density ethylene copolymer (LLDPE).

(b) at least one primer layer (b),

(f) a layer (f) composed of at least one homo- and / or

copolyamide; preferably at least one partially aromatic, amorphous or partially crystalline copolyamide, which is preferably present in admixture with at least one further homopolyamide and / or copolyamide;

(c) at least one internal gas barrier layer (c), preferably composed of at least one ethylene-vinyl alcohol copolymer, at least one polyvinyl alcohol, at least one homo- or copolyamide or a mixture of at least two of these polymers, more preferably at least one ethylene-vinyl alcohol copolymer ; (g) a layer (g) composed of at least one homo- and / or copolyamide; preferably at least one partially aromatic, amorphous or partially crystalline copolyamide, which is preferably present in admixture with at least one further homopolyamide and / or copolyamide;

(d) at least one primer layer (d), and

(e) an outer layer (e) composed of at least one

thermoplastic aliphatic, partially aromatic or aromatic homo- or copolyamide, or at least one thermoplastic, aliphatic, partially aromatic or aromatic homo- and / or copolyester, wherein the adhesion promoter layers (b) and (d) preferably from at least one modified thermoplastic polymer, preferably from at least one modified polyolefin homo- or copolymers, more preferably at least one modified ethylene homo- or copolymers, which with at least one organic acid or at least one organic

Acid anhydride, preferably modified with maleic anhydride are constructed;

The multilayered plastic film used according to the invention may comprise further layers, preferably one, two or more adhesion promoter layers (i) and / or one or more layers Q) composed of at least one thermoplastic olefin homo- or copolymers or of at least one homo- or

Copolyamide, preferably between layers (b) and (f) and / or between layers (g) and (d).

In a preferred embodiment, the multilayer plastic film used according to the invention has

(a) a sealing layer (a) composed of at least one

thermoplastic olefin homo- or copolymers, preferably ethylene homo- or copolymers, more preferably selected from the group consisting of LDPE, LLDPE and mPE and mixtures thereof; (h) a layer (h) composed of at least one thermoplastic olefin homo- or copolymer; preferably on at least one ethylene homo- or copolymers, more preferably on at least one LDPE and / or LLDPE, and in particular on at least one linear low density ethylene copolymer (LLDPE).

(b) at least one primer layer (b),

(f) a layer (f) composed of at least one homo- and / or copolyamide; preferably at least one partially aromatic, amorphous or partially crystalline copolyamide, which is preferably present in admixture with at least one further homopolyamide and / or copolyamide;

(c) at least one internal gas barrier layer (c), preferably composed of at least one ethylene-vinyl alcohol copolymer, at least one polyvinyl alcohol, at least one homo- or copolyamide or a mixture of at least two of these polymers, particularly preferably at least one ethylene-vinyl alcohol copolymers;

(g) a layer (g) composed of at least one homo- and / or copolyamide; preferably at least one partially aromatic, amorphous or partially crystalline copolyamide, which is preferably present in admixture with at least one further homopolyamide and / or copolyamide;

(i) one or two adhesion promoter layers (i);

(j) a layer (j) composed of at least one thermoplastic olefin homo- or copolymer or at least one homo- or copolyamide;

(d) at least one primer layer (d); and

(e) an outer layer (e) composed of at least one

thermoplastic aliphatic, partially aromatic or aromatic Homo- or copolyamide, or at least one thermoplastic, aliphatic, partially aromatic or aromatic homo- and / or copolyester, preferably in the specified sequence of layers, wherein the

Adhesive layers (b), (d) and (i) preferably of at least one

modified thermoplastic polymer, preferably of at least one modified polyolefin homo- or copolymers, more preferably of at least one modified ethylene homo- or copolymers, which with at least one organic acid or at least one organic

Acid anhydride, preferably modified with maleic anhydride, are constructed.

In a preferred embodiment, layers (j) and (e) are each

independently composed of at least one homo- or copolyamide. In another preferred embodiment, the layer (j) is composed of at least one thermoplastic olefin homo- or copolymer and the layer (e) is composed of at least one thermoplastic, aliphatic, partially aromatic or aromatic homo- and / or copolyester.

Regardless of the number of layers, the total thickness of the

According to the invention used, multilayer plastic film preferably at most 150 μιτι, more preferably 30-100 pm, and most preferably 50-70 pm.

The average density of the multilayer plastic film is

preferably at most 1, 15 g / cm ³ , more preferably at most 1, 10 g / cm ³ , and most preferably 1, 0-1, 05 g / cm ³ .

The multilayered plastic film used according to the invention is preferably obtainable overall by the blown film coextrusion process, particularly preferably by the triple bubble coextrusion process. The multilayer plastic film used according to the invention is preferably produced in this way. These production methods and corresponding parameters are generally known to the person skilled in the art. The production of multilayer films by means of the triple-bubble coextrusion process is described, for example, in James D. Stobie, "Producing coextruded high barrier heat-shrinkable packaging films", PAPER, FILM & FOIL CONVERTER, [Online] October 1, 2003.

Preferably, the film tube is stretched biaxially in the longitudinal and transverse directions in each case in a drawing ratio of at least 1: 1, 5, more preferably of at least 1: 2, very particularly preferably of 1: 2 to 1: 4.

The layers (a) to (e) and the optionally present layers (f), (g), (h), (i) and / or (j) of the multilayer film used according to the invention, each independently selected with additives selected from group

including anti-oxidants, antiblocking agents, anti-fogging agents, antistatic agents, antimicrobial agents, light stabilizers, UV absorbers, UV filters, dyes, color pigments, stabilizers, preferably heat stabilizers, process stabilizers and UV and / or light stabilizers, preferably based on at least a sterically hindered amine (HALS), process auxiliaries, flame retardants,

Nucleating agents, lubricants, optical brighteners, flexibilizers, sealants, plasticizers, spacers, fillers, waxes, wetting agents,

surface-active compounds, preferably surfactants, and dispersants. In this case, the content of the aforementioned additives - if present in one layer, in each case 0.001-20 wt .-%, preferably 0.01-10 wt .-%, each based on the total weight of the individual layer, amount.

In a preferred embodiment, the inventively used

Multilayer film and the inflatable packaging according to the invention transparent.

The multilayer film used according to the invention and the inflatable packaging according to the invention can be printed or dyed. The printing is preferably carried out on the layer (e). For coloring, at least one layer of the multilayer film can be provided with at least one colorant, preferably with at least one colorant and / or color pigment, as an additive. The packaging according to the invention has neither a nub structure nor an embossed structure. This also applies to the invention used

Multilayer film.

The inflatable package of the present invention is comprised of at least one of the inflatable elements described below which is (are) divided into at least two inflatable chambers and is constructed of at least one of the multilayer plastic films listed above.

The packaging according to the invention is accordingly made of at least one of the above-described multilayer plastic films.

Another object of the invention is therefore also a process for producing an inflatable packaging according to the invention, which thereby

is characterized in that

(a) two superimposed webs of the above-described multilayer plastic film are joined by sealing seams to at least one inflatable element, each of which is replaced by

at least once interrupted, further sealed seams to at least two possibly communicating with each other, inflatable chambers is divided so that, where appropriate, each between two inflatable chambers in the sealed seam region at least one connecting channel is present, and at least one and if necessary both the chamber (s) with a gas inlet device is (are) provided; and

(b) where appropriate, each package is separated, the individual chambers being able to be made into the same or different shapes.

When packaging a product, the inflatable element of the packaging according to the invention is preferably inflated in contact with the packaged product, preferably by blowing in inert gas, more preferably air, after which the air inlet device is subsequently closed, preferably by heat sealing the air inlet channel. Furthermore, the connection channels between the chambers after inflation and closing the

Air inlet device optionally be closed by heat sealing. Subsequently, the air inlet device, preferably be separated by punching at the adjacent sealing seam.

Since the inflating of the inflatable chambers preferably happens in direct contact with the packaged goods to be packaged, the inflating can be controlled according to the design of the packaged goods so that not only an exact protective casing according to the external design of the

Packaged good is achieved, but also a largely identical effective protective cover for the packaged possibly by varying degrees

Inflation of the individual chambers of the inflatable packaging is achieved.

Therefore, the packaging according to the invention is characterized in particular in that it is preferably completely adaptable to at least a portion of the outer shape of the goods to be packaged to the entire outer shape of the goods to be packaged. This means according to the invention that the division of the inflatable element is such that the package in the inflated state exactly the outer shape of the packaged goods depending on Umhüllungsausmaß at least partially, possibly completely encloses.

This is possible because the multilayer plastic film used according to the invention allows the production of sealing seams with high seal seam strength and the film has a high puncture resistance. Therefore, the packaging according to the invention is characterized in that all sealing seams, in particular those, by which the inflatable element is divided, have a high seal strength and the multi-layered used

Plastic film has excellent puncture resistance.

Therefore, the package according to the invention is extremely resistant to impact and sharp edges and in particular can withstand the weight of a heavier packaged goods undamaged and remain intact even when stored. Preferably, the packaging according to the invention has a bursting pressure according to Müllen (DIN 53141) of at least 0.6 bar, more preferably of at least 0.8 bar, most preferably of at least 1, 2 bar, and in particular at least 1, 5 bar on.

Compared to conventional air cushion packaging, the inflated packaging according to the invention thereby provides improved protection for the

Packaged goods, in particular for heavy, sharp-edged and / or shock-sensitive goods.

The inflated packaging according to the invention is preferably suitable for packaging goods up to a weight which the sealing seams can still withstand.

Due to the high seal strength of all sealed seams, the packaged goods can therefore have a weight of up to 100 kg. However, the package according to the invention is also suitable for the packaging of goods with a lower weight, such as a weight of only 200 g.

Preferably, the weight of the material to be packaged is at least 100 g, preferably at least 250 g, more preferably at least 500 g, and most preferably at least 1 kg. In a preferred embodiment of the inflated packaging according to the invention, the weight of the packaged good may be at least 3 kg, preferably at least 5 kg, more preferably at least 10 kg, most preferably at least 20 kg.

A further subject of the invention is therefore the use of an inflatable packaging according to the invention for packaging electronic articles,

Electrical appliances and their accessories, household goods, tools, machines, car spare parts, liquid containers and other articles with different designs.

For packaging a good, preferably the inflatable chambers of the inflatable elements of the packaging according to the invention are inflated so far, the product to be packaged is at least partially surrounded or enveloped, at least in partial regions, preferably in total, by the product corresponding to the inflated packaging, and the air inlet device is closed, preferably by heat sealing. If necessary, at least part of the

Air inlet device separated.

In a packaging of identical goods to be packed, such. B. in a continuous operation, by normalization of the used inflatable elements or their division into chambers and the respective Aufblasparameter first on a single packaging as a standard packaging every other number of identical, to be packaged goods, preferably even continuously, can be packed easily. Preferably, depending on

Design of the goods to be packaged, the packaging according to the invention are preferably reused for identically designed packaging goods.

The packaged product with the inflated packaging is preferably stored in a container, preferably a cardboard box, so that the packaged product is preferably enveloped by the packaging according to the invention, at least at the bottom, particularly preferably on all sides and optionally also from above.

A further subject of the invention is therefore also an inflated packaging according to the invention with a product packed therein.

In the inflated state, the packaging according to the invention preferably contains an inert gas, preferably air.

Determination of puncture resistance and puncture resistance

The puncture resistance and puncture resistance of the multilayer plastic films is according to DIN 53373 in standard climate 23 ° C at 50% rel. Moisture determined and is given in [N] or [J].

Determination of the seal seam strength

The seal seam strength of the multilayer plastic films is determined according to DIN 55529 at 140 ° C., 0.75 seconds and 3 bars (smooth heat-sealing jaws heated on both sides) and is given in [N / 15 mm].

Examples:

The following examples and comparative examples serve to illustrate the invention, but are not to be construed as limiting.

I. Chemical characterization of the raw materials used:

LLDPE Dowlex NG 5056 G; Manufacturer: Dow Chemicals

Density: 0.92 g / cm ³

Melt volume rate: 1.1 g / 10 min (190 ° C / 2.16kg) co-monomer: 1-octene

LDPE Lupolen 2420H; Manufacturer: LyondellBasell Industries

Density: 0.924 g / cm ³

Melt volume rate: 1.9 g / 10 min (190 ° C / 2.16 kg)

MDPE MDPE HF 513; Manufacturer: Total Petrochemicals

Density: 0.934 g / cm ³

Melt volume rate: 0.15 g / 10 min (190 ° C / 2.16 kg)

COC Topaz COC 9506F-04; Norbornene / ethylene copolymer of

Company TOPAS Advanced Polymers

Density: 1.020 g / cm ³

Melt volume rate: 1, 0 g / 10 min (190 ° C / 2.16 kg) Bonding agent Bynel 21 E 781; Manufacturer: DuPont

Density: 0.93 g / cm ³

Melt volume rate: 2.0 g / 10 min (190 ° C / 2.16 kg) anhydride-modified ethylene-acrylate copolymer

Adhesion Agent II ADMER NF 911 E; Manufacturer: Mitsui Chemicals

Density: 0.90 g / cm ³

Melt volume rate: 2.5 g / 10 min (190 ° C / 2.16kg) polyethylene modified with maleic anhydride

Polyamide Grilon F 40; Manufacturer: Ems-Chemie AG

Density: 1, 14 g / cm ³

Melt volume rate: 25 cm ^3/10 min (275 ° C / 5kg) PA 6

Polyamide II Ultramid B 33 SL; Manufacturer: BASF SE

Density: 1, 14 g / cm ³

PA 6

Amorphous polyamide I Selar PA 3426 R; Manufacturer: DuPont

Density: 1, 19 g / cm ³

PA 6I / 6T

Amorphous polyamide II Grivory G21; Manufacturer: Ems-Chemie AG

Density: 1.18 g / cm ³

Melt volume rate: 25 cm ^3/10 min (275 ° C / 5kg) PA 6I / 6T

EVOH I Soarnol AT 4403; Manufacturer: Nippon Gohsei

Density: 1, 14 g / cm ³

Melt volume rate: 3.5 g / 10 min (210 ° C / 2.16 kg) ethylene content: 44 mol%

EVOH II Soarnol DT 2904 RB; Manufacturer: Nippon Gohsei

Density: 1, 21 g / cm ³

Melt volume rate: 4 g / 10 min (210 ° C / 2.16 kg) ethylene content: 29 mol% Lighter C93; Manufacturer: Equipolymers

Density: 1.40 g / cm ³

polyethylene terephthalate

Polybatch FSU1010E; Slip / antiblock masterbatch from A. Schulmann based on LDPE with antiblock lubricant additives

Density: 0.980 g / cm ³

Melt volume rate: 13.0 g / 10 min (190 ° C / 2.16kg)

Grilon MB 7361 FS; Slip / antiblock masterbatch from EMS-Chemie AG based on PA6 with antiblock lubricant additives

Polypet PT AB 050G; Slip / antiblock masterbatch from A.Schulmann based on PET with antiblock lubricant additives

II. Production of the multilayer plastic films:

The multilayer, according to the invention used plastic films of

Packages B1-B6 according to the invention each consist of 11 layers. The individual layers of the multilayer plastic films each adjoin one another directly in the order in which they are listed below. The multilayer plastic films were produced by blown film coextrusion by the triple bubble method with a stretch ratio of 3-3.5 in the transverse direction and from 2.4-2.9 in the longitudinal direction.

III. Production of the comparative film

The multilayer plastic film of the comparative packaging V1 consists of 9 layers. The individual layers immediately adjoin one another in the order in which they are listed below. This multi-layered

Plastic film was made by the blown film extrusion process and was not stretched. IV. Examples and Comparative Examples

All subsequent% data are each wt%. The layer thicknesses given are the relative layer thicknesses.

Layer Raw materials Commodities Raw materials Commodities construction rel. Layer thicknesses rel. Layer thicknesses rel. Layer thicknesses rel. layer thicknesses

B1-B4 B1 B2 B3 B4

Layer LDPE (47%) LDPE (47%) LDPE (47%) LDPE (47%)

(a) LLDPE (50%) LLDPE (50%) LLDPE (50%) LLDPE (50%)

Slip- / AB-MB I (3%) Slip- / AB-MB I (3%) Slip- / AB-MB I (3%) Slip- / AB-MB I (3%)

Layer thickness: 30% Layer thickness: 27% Layer thickness: 27% Layer thickness: 27%

Layer LLDPE (100%) LLDPE (100%) LLDPE (100%) LLDPE (100%)

(h) Layer thickness: 6% Layer thickness: 5.5% Layer thickness: 5.5% Layer thickness: 5.5%

Layer Adhesion promoter I Adhesion promoter I Adhesive agent I Adhesion promoter I

(100%) (100%) (100%) (100%)

Layer thickness: 5% Layer thickness: 8% Layer thickness: 8% Layer thickness: 8%

Layer Polyamide I (80%) Polyamide II (80%) Polyamide II (80%) Polyamide II (80%)

(0 amorphous polyamide amorphous polyamide amorphous polyamide amorphous polyamide I

I (20%) I (20%) I (20%) (20%)

Layer thickness: 8% Layer thickness: 8% Layer thickness: 8% Layer thickness: 8%

Layer EVOH I (100%) EVOH I (100%) EVOH I (100%) EVOH I (100%)

(c) Layer thickness: 4% Layer thickness: 4% Layer thickness: 4% Layer thickness: 4%

(g) amorphous polyamide amorphous polyamide amorphous polyamide amorphous polyamide I

I (20%) I (20%) I (20%) (20%)

Layer thickness: 8% Layer thickness: 8% Layer thickness: 8% Layer thickness: 8%

01) (100%) (100%) (100%) (100%)

Layer thickness: 4% Layer thickness: 4% Layer thickness: 4% Layer thickness: 4%

(i2) (100%) (100%) (100%) (100%)

Layer thickness: 4% Layer thickness: 4% Layer thickness: 4% Layer thickness: 4%

Ü) amorphous polyamide amorphous polyamide amorphous polyamide amorphous polyamide I

I (20%) I (20%) I (20%) (20%)

Layer thickness: 21% Layer thickness: Layer thickness: Layer thickness: 21, 50%

21, 50% 21, 50%

(d) (100%) (100%) (100%) (100%)

Layer thickness: 5% Layer thickness: 5% Layer thickness: 5% Layer thickness: 5%

Layer Polyamide I (88%) Polyamide II (88%) Polyamide II (88%) Polyamide II (88%)

(e) amorphous polyamide amorphous polyamide amorphous polyamide amorphous polyamide I 1 (10%) 1 (10%) I (10%) (10%)

Slip / AB-MB II (2%) Slip / AB-MB II (2%) Slip / AB-MB II (2%) Slip / AB-MB II (2%) Layer thickness: 5% Layer thickness: 5% layer thickness: 5% layer thickness: 5%

Total 49.91 μπι 70.40 pm 49.81 pm 70.40 m layer thickness

V. Determination of puncture resistance

For the multilayer plastic films of Examples B2-B6 and the

Comparative Example C1 were each according to the above-described

Methods the puncture resistance, the puncture and the seal seam strength determined.

The values correspond in each case to the average of 3 measured samples.

A preferred exemplary embodiment of the invention

Protective packaging is shown in FIG. 1 and will be explained in more detail below.

Figure 1 shows a packaging according to the invention consisting of an inflatable element which has been filled with air and the air inlet duct through

Heat seal was sealed. The packaging (1) consists of an air cushion already inflated element (2), which is composed of two superimposed webs of a multilayer plastic film. The two webs connected by sealing seams (3). Sealing seams (3)

divide the element into five chambers (4), each by

Connecting channels (5) in the region of the sealing seam (3) are interconnected. One of the chambers (4) has an air inlet device (6) with a

Air inlet duct (7), which was closed after the inflation of the element (2) by means of a sealed seam (8). The element (2) is bounded by an outer punching line (9). After inflation and closing of the air inlet channel, the air inlet device can be separated at the outer edge of the sealing seam (see punching line (10)).

LIST OF REFERENCE NUMBERS

1 protective packaging

2 air cushion element

3 sealed seam

4 chamber

5 connection channel

6 air intake device

7 air intake duct

8 sealing seam closing the air intake passage

9 outer punching line

10 the air inlet device severing punching line

Claims

claims:

1. A use of a multilayer plastic film comprising at least one 5-layer, preferably at least 7-layered, more preferably at least 9-layered, most preferably 11-layered construction comprising

(a) a sealing layer (a),

(b) at least one primer layer (b),

(c) at least one inner gas barrier layer (c),

(d) at least one adhesion promoter layer (d),

(e) an outer layer (e) preferably composed of at least one homo- and / or copolyamide or homo- and / or copolyester,

preferably in the specified sequence of layers,

for producing an inflatable packaging consisting of at least one inflatable to an air cushion element, which is divided over at least one sealed seam in at least two inflatable, possibly communicating chambers.

2. A use according to claim 1, characterized in that the

multilayer plastic film a puncture resistance of at least 200 N, preferably at least 300 N, more preferably at least 400 N, determined according to DIN 53373, an oxygen permeability of at most

10 cm 3 / (m 2, 24 h, bar), preferably at most 5 cm 3 / (m 2, 24 h, bar), determined to DIN 53380-2 at 23 ° C. and 0% atmospheric humidity.

3. A use according to claim 1 or 2, characterized in that the multilayer plastic film has a seal strength of at least 30

N / 15mm, preferably at least 50 N / mm, measured according to DIN 55529 has.

4. Use according to any one of claims 1-3, characterized in that the multilayer plastic film is at least monoaxially, preferably biaxially, stretched.

5. A use according to any one of claims 1-4, characterized in that the multilayer plastic film has at least one gas barrier layer (c) as an air, oxygen and / or nitrogen barrier layer.

6. A use according to any one of claims 1-5, characterized in that the multilayer plastic film, a sealing layer (a), preferably composed of at least one thermoplastic olefin homo- or

Copolymers, particularly preferably ethylene homo- or copolymers, in particular selected from the group consisting of LDPE, LLDPE and mPE and mixtures thereof.

7. A use according to any one of claims 1-6, characterized in that the total thickness of the multilayer plastic film at most 150 μιτι, preferably 30-100 pm, and most preferably 50-70 pm.

8. A use according to any one of claims 1- 7, characterized in that the multilayer plastic film by the blown film coextrusion process, preferably by the triple bubble coextrusion process, is available.

9. A use according to claim 1-8, characterized in that the

multilayer plastic film furthermore comprises two layers (f) and (g) each adjacent to the gas barrier layer (c), each composed of at least one homo- and / or copolyamide.

10. An inflatable packaging (1) comprising at least one inflatable to an air cushion element (2) prepared using a multilayer plastic film according to any one of claims 1-9, characterized in that the package (1) by inflation at least to a portion of the external shape of a packaged goods in exactly adaptable and at least one element (2) via at least one sealed seam (3) in at least two inflatable, possibly communicating chambers (4) is divided.

11. An inflatable packaging (1) according to claim 10, characterized in that the element (2) at least one closable

Air inlet device (6).

12. An inflatable packaging (1) according to any one of claim 10 or 11, characterized in that the element (2) by at least one sealed seam (3) in at least two inflatable chambers (4) is divided, wherein at least two chambers (4) each connected by a connecting channel (5) preferably in this sealed seam area (3).

13. An inflatable packaging (1) according to any one of claims 10-12, characterized in that the inflatable element (2) in at least two, by sealing seams (3) separated from each other inflatable chambers (4) is divided, the two separated from each other Chambers (4) each one

having closable air inlet device (6).

14. An inflatable packaging (1) according to any one of claims 10-13, characterized in that the element (2) has a puncture resistance of at least 200 N, preferably at least 300 N, more preferably at least 400 N, determined according to DIN 53373.

15. An inflatable packaging (1) according to any one of claims 10 - 14, characterized in that the sealing seams (3) has a seal strength of at least 30 N / 15 mm, preferably at least 50 N / mm, measured according to DIN 55529

exhibit.

16. A method for producing inflatable packaging (1) according to any one of claims 10-15, characterized in that (a) two superimposed webs of the multilayer plastic film according to one of claims 1-9 are connected by sealing seams (3) to an inflatable element (2) and divided into a plurality of inflatable chambers (4) by means of further sealing seams (3) in that preferably at least one connecting channel (5) is present in each case between two chambers (4) in the sealed seam region (3) and at least one of the chambers (4) is provided with an air inlet device (6); and

(b) if necessary, the packages are separated.

17. An inflated with air packaging (1) consisting of at least one

Element (2) according to any one of claims 10-15, whose inflated

Chambers (4) are adapted to at least a portion, preferably more than 75%, more preferably to the entire outer shape of the goods packed therein exactly.

18. An inflated with air packaging (1) according to claim 17 as packaging for electronic goods, electrical appliances and their accessories, household goods, tools, machinery, auto parts and liquid containers.

19. Re-pack a packed product in an inflated package (1)

Claim 17 or 18.