EP1185466B1 - Biegsame folie, insbesondere verpackungsfolie, sowie verfahren zur herstellung derselben - Google Patents

Biegsame folie, insbesondere verpackungsfolie, sowie verfahren zur herstellung derselben Download PDF

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Publication number
EP1185466B1
EP1185466B1 EP00935063A EP00935063A EP1185466B1 EP 1185466 B1 EP1185466 B1 EP 1185466B1 EP 00935063 A EP00935063 A EP 00935063A EP 00935063 A EP00935063 A EP 00935063A EP 1185466 B1 EP1185466 B1 EP 1185466B1
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EP
European Patent Office
Prior art keywords
substance
wrap
expandable
film
energy
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Expired - Lifetime
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EP00935063A
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English (en)
French (fr)
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EP1185466A1 (de
Inventor
Giorgio Trani
Marion Sterner
Giovanni Manfre'
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/03—Wrappers or envelopes with shock-absorbing properties, e.g. bubble films

Definitions

  • This invention relates to a flexible packaging wrap according to the preamble of claim 1 and a method for its production.
  • Wraps are known formed from two flexible films of air-impermeable material welded together face to face along closed lines defining a plurality of small air-filled blisters forming a sort of cushion or bubbles able to protect delicate objects wrapped in the wrap against impact and scratching.
  • This bubble wrap is formed by making a flexible extensible film adhere to a roll, the lateral surface of which comprises a plurality of generally hemispherical cavities connected to a suction pump.
  • the extensible film heated and made to adhere to the inner surface of said cavities, is then welded face to face to a second flexible film with which the first forms hemispherical blisters, within which air remains trapped.
  • bubble wrap is formed from continuous film and is hence itself continuous and can be wound into reels, of dimensions depending only on its physical bulk.
  • a drawback of this known bubble wrap is that its production requires very complicated equipment and generally laborious machining of the rolls, together with costly heating and suction systems, all of which substantially affect the final cost of the product obtained.
  • a further drawback is that the total thickness of the wrap produced is substantially equal to the height of the blisters, which varies from 2 to 5 mm, hence in the case of 5 mm blisters a reel of about 60 cm diameter contains less than 60 metres of wrap, with obvious and often serious space requirement problems due to the considerable volume/weight ratio.
  • Flexible wraps are also known consisting of a layer of expanded material having a prefixed thickness. For their production they require less complex techniques and equipment which have lower costs for realizing the final product, but they don't solve the drawback of space, due to the high volume/weight ratio.
  • Document EP 0 170 229 discloses a flexible packaging wrap provided with an irreversibly expandable substance.
  • US-5.846.622-A discloses a heat-expandable solid image forming sheet including a base sheet, a heat-expandable layer formed of a material containing foaming particles on the base sheet and capable of expanding when heated, and a protective layer formed by a coating process on the heat-expandable layer.
  • the expandable layer can form strips containing text in braille characters to be applied on books and utensiles.
  • EP-A-0511716 discloses expandable films to be used in the automotive industry or for similar purposes and could not be used in traditional packaging machines.
  • An object of the invention is to provide a flexible wrap for packaging, provided over its entire surface or part of it with elastically extensible material acting as protective cushion for the objects wrapped in said wrap.
  • a further object of the invention is to provide a flexible wrap for packaging which prior to its final use is of small overall size, such as to virtually totally eliminate all the current problems connected with its storage and transport from the place of utilization.
  • a further object of the invention is to improve the performance obtainable from flexible wraps by also providing it with thermal, acoustic and electromagnetic barrier properties, together with increased protective properties to the extent of making it multi-purpose.
  • the flexible wrap according to an embodiment not forming part of the invention in the "bubble” embodiment consists of two flexible films 2,4 impermeable to air or other gas, and defined hereinafter as the support film 2 and the extensible film 4.
  • the support film 2 can for example consist of polyester, high density polyethylene (HDPE), paper with polyester, polyethylene, polypropylene or polyvinylchloride backing, or aluminium with polyester, polyethylene or polypropylene backing.
  • HDPE high density polyethylene
  • the total thickness of the support film 2 varies preferably from 20 to 100 ⁇ , depending on the type of material and of the performance required of the bubble wrap, although different thickness can be used with particular materials and for particular applications.
  • the extensible film 4 of much greater deformability than the support film 2 is preferably of low density polyethylene (LDPE), polyester or polypropylene, depending on the nature of the support film 2 and on the viscoelastic and rheological characteristics of the extensible film 4.
  • LDPE low density polyethylene
  • polyester or polypropylene depending on the nature of the support film 2 and on the viscoelastic and rheological characteristics of the extensible film 4.
  • the thickness of the extensible film 4 varies preferably from 20 to 50 ⁇ but again in this case different thickness can be used with particular materials and for particular applications.
  • the two films 2, 4 are joined together along closed lines defining small blisters or cells 6, which can be of any size and any shape, and in particular be circular, polygonal or elongate.
  • the two films 2, 4 can be joined together by thermal, high frequency, ultrasonic or infrared welding, or by using suitable adhesives compatible with the film constituent materials.
  • suitable adhesives are preferably epoxy, phenolic, acrylic, formaldehyde, anaerobic, cyanoacrylate, elastomeric, silicone, polyurethane, polysulphide or inorganic resins, or non-chemical resins providing physical-mechanical adhesion.
  • Each of the blisters 6 houses in its interior a substance 8 which following administration of energy expands to inflate the blister.
  • the substance 8 is for example of sublimable type, ie is able to pass from the solid state directly to the gaseous state when its transformation temperature is attained.
  • sublimable substance examples include "sublimation dyes”, isoquinone-5-carboxynitrile, some trioxanes and siloxanes, and p-dichlorobenzene, which all have the property of passing from the gaseous state on attaining the transformation temperature, which varies from about 53°C for p-dichlorobenzene to about 135°C for isoquinone-5-carboxynitrile, and at a rate which is lowest for p-dichlorobenzene and highest for isoquinone-5-carboxynitrile.
  • sublimation dyes isoquinone-5-carboxynitrile, some trioxanes and siloxanes
  • p-dichlorobenzene which all have the property of passing from the gaseous state on attaining the transformation temperature, which varies from about 53°C for p-dichlorobenzene to about 135°C for isoquinone-5-carboxynitrile, and at a rate
  • the sublimable substance 8 possibly already enclosed within an expandable material (for example microspheres), is applied to the support film 2 preferably by stamping it thereon under register control such as to involve only the regions intended to form the blisters 6 and leave free thin bands bounding said blisters, at which the support film 2 and the extensible film 4 are to be joined together.
  • an expandable material for example microspheres
  • Figure 5 shows schematically the process for producing the bubble wrap.
  • the support film 2 unwound from a reel 10 receives the applied sublimable substance 8 in a stamping station 12 under register control, and is then joined in a welding station 14 to the extensible film 4 unwound from a reel 16.
  • a second station is provided (not shown on the drawings) in which the adhesive is applied to the support film 2 and to the extensible film 4 preferably under register control.
  • the composite film 18 obtained in this manner is then wound into a reel 20 to be then stored and/or sent to its place of use.
  • the total thickness of the film 18 is substantially equal to the sum of the thicknesses of the two films 2 and 4, it is apparent that the reel 20 obtained, although of dimensions substantially equal to those of usual transportable reels, contains a composite film of length considerably greater than that of traditional bubble wrap.
  • a reel of 60 cm diameter contains about 1900 metres of bubble wrap having a thickness of 150 ⁇ .
  • the composite film 18 In the location in which the composite film 18 is used, it is subjected to energy administration, for example heat, which causes the substance 8 contained in the blisters to expand and inflate the blisters, transforming them into bubbles. During this stage the administered heat also causes the extensible film to soften, so facilitating stretching.
  • energy administration for example heat
  • the substance 8 contained in the blisters to expand and inflate the blisters, transforming them into bubbles.
  • the administered heat also causes the extensible film to soften, so facilitating stretching.
  • energy of other types can be administered depending on the type of expandable substance and/or any activators used for the sublimation process.
  • the expandable substance confined within the closed blisters may be of foaming type, ie able to increase in volume following a chemical reaction by expansion agents which by increasing in volume cause cells to form having walls which solidify by cross-linking, polymerization or phase transition as in normal manufacturing processes for expanded materials or foams.
  • expansion agents which by increasing in volume cause cells to form having walls which solidify by cross-linking, polymerization or phase transition as in normal manufacturing processes for expanded materials or foams.
  • the energy is administered directly to the expansion agent which on being heated or activated initiates gas formation with consequent volume increase and structural change to a solid material.
  • Usable polymer matrices are liquids, including high viscosity liquids, or gels, such as formaldehydes or epoxy, polyester, polyurethanic, acrylic resins.
  • the expansion agent can be for example sodium bicarbonate, azodicarbonamide or its derivatives, benzene suplphonitryl hydrazide, tetra amines, benzene sulphonylhydrazide, urea derivatives or organic acids.
  • sodium bicarbonate this reacts with water in accordance with the reaction. Na 2 CO 3 + H 2 O ⁇ CO 2 (gas) + 2NaOH the gas developed by the reaction and confined within the blisters then causing the matrix to increase in volume.
  • the water can be fed on command by rupture of microcapsules containing it, and which are introduced into the blisters together with the expansion agent.
  • Reaction inhibitors and other known additives to prevent the substance being transformed into gas or expanding below certain values of administered energy can be mixed with the expansion agent to better control the determined expansion of the expanding substance.
  • the expansion agent is applied to the support film 2 preferably by stamping it thereon under register control, the extensible film 4 then being applied to the support film 2 by thermowelding along the edges of the shapes previously stamped under register control.
  • Each blister could also contain in its interior more than one expandable substance, with different characteristics, and each activated by a different type of administered energy.
  • one or other substance can be expanded simply by varying the type of activation energy, so that the inflated blisters obtained are filled with expanded substances of different characteristics suitable for the particular use to which the wrap is to be put.
  • the expanded substance contained within the inflated blisters can offer resistance to impact, to light, to moisture, to noise, to electromagnetic waves and to other pollutant agents.
  • the wrap of the invention can consequently be considered a multi-purpose bubble wrap.
  • the expandable substance confined within the closed blisters is contained in microcapsules 22, each comprising a membrane of extensible material and an agent which expands on command, consisting for example of particular hydrocarbons such as isobutane, isopropane and their mixtures.
  • the expandable membrane can consist for example of vinylidene chloride and acrylonitrile copolymers, or acrylonitrile copolymers.
  • the expandable substance contained in the microcapsules 22 expands to inflate the blister which contains it.
  • microcapsules 22 may be directly applied to the support film 2 (see Figures 8 and 9) in accordance with the predetermined arrangement.
  • the membranes themselves constitute the blisters, which remain securely fixed to the support film 2 by a physical-chemical adhesion mechanism of the most convenient type, in particular by an elastic adhesive, which ensures that the capsule remains fixed during its expansion and when expansion is complete.
  • the temperature at which expansion begins can vary, depending on the expansion agent used, from a minimum of 80°C to more than 130°C.
  • each capsule can contain more than one type of expandable substance in its interior, to be selectively activated by administering different types of energy.
  • the microcapsules may have the membrane tearable following energy administration.
  • they comprise one of the two components of the expandable substance, which component, following the break of the membrane, comes into touch with the other component forming the matrix inside which the microcapsules are placed and which, following this touch, cause the expansion.
  • the microcapsules 22 are directly applied to the support film 2, the same matrix which forms the second component of the expandable mixture, may be provided with adhesive properties in order to couple the two films 2 and 4 before and after the expansion process.
  • this substance doesn't affect localized areas of the wrap but the entire surface thereof.
  • the wrap which after its realization is very thin (see Figure 10) increases of volume, after energy administration, in the areas where this is required. If energy is administered to the entire surface of the wrap, the entire wrap increases of thickness (see Figure 11) whereas if this energy administering occurs under register control (for example by diaphragm or filters) only the affected areas will expand.
  • the production of the wrap according to the invention in this embodiment may occur both by extruding the plastic material forming the film and which already houses inside it the expandable substance (see Figures 12 and 13), if necessary housed in microcapsules 22 (see Figures 14 and 15), and by applying such an expandable substance 8 between the two films 2 and 4 already made (see Figures 16 and 17).
  • the expandable substance may be housed in microcapsule 22 (see Figures 18 and 19) and may consist of one or more different kinds and the energy or the different kinds of energy may be administered over the entire surface of the wrap or, under register control, over the only parts where the expansion should be caused.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Packages (AREA)
  • Buffer Packaging (AREA)

Claims (26)

  1. Biegsame Verpackungsfolie, geeignet zur Verwendung in herkömmlichen Verpackungsmaschinen, dadurch gekennzeichnet, dass sie aus wenigstens einem Film (2) besteht, der an seiner gesamten Oberfläche mit wenigstens einer bei Zufuhr von Energie irreversibel expandierbaren Substanz (8) versehen ist.
  2. Folie nach Anspruch 1, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) auf den besagten Film (2) aufgebracht ist.
  3. Folie nach Anspruch 1, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) in der besagten Folie (2) eingeschlossen ist.
  4. Folie nach Anspruch 1, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) in Mikrokügelchen (22) enthalten ist, die mit einer dehnbaren Membran versehen sind.
  5. Folie nach Anspruch 1, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) aus wenigstens einem gasförmigen Kohlenwasserstoff besteht.
  6. Folie nach Anspruch 4, dadurch gekennzeichnet, dass die Membran aus Mikrokügelchen (22) aus wenigstens einem Copolymer aus Acrylnitril, Vinylidenchlorid oder einem Gemisch davon besteht.
  7. Folie nach Anspruch 2, dadurch gekennzeichnet, dass sie aus zwei Filmen (2, 4) besteht, zwischen denen die besagte expandierbare Substanz (8) angeordnet ist.
  8. Folie nach Anspruch 1, dadurch gekennzeichnet, dass der besagte Film (2) mit mehreren Substanzen (8) versehen ist, die bei Zufuhr von Energie mit unterschiedlichen Eigenschaften selektiv expandierbar sind.
  9. Folie nach Anspruch 1, dadurch gekennzeichnet, dass der besagte Film (2) aus wenigstens einer Substanz besteht, die der Gruppe angehört, welche Polyester, Polyolefine, Polyamide und deren Derivate umfasst, wobei die besagte Substanz, falls notwendig, mit einem Verstärkungsmaterial gekoppelt ist, das einer Gruppe angehört, welche Papiermaterialien und Metalllaminatmaterialien umfasst.
  10. Folie nach Anspruch 1, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) von dem Typ ist, der durch Energie aktivierbar ist, die der Gruppe angehört, welche mechanische Energie, thermische Energie, Lichtenergie, Ultraschallenergie, Strahlungsenergie, elektromagnetische Energie und elektronische Energie umfasst.
  11. Folie nach Anspruch 1, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) aus einer sublimierbaren Substanz besteht.
  12. Folie nach Anspruch 11, dadurch gekennzeichnet, dass die besagte sublimierbare Substanz einer Gruppe angehört, welche p-Dichlorbenzol, Isochinon-5-carboxynitril, Trioxan, Siloxan, eine Substanz, die als Sublimationsfarben bekannt ist, und Gemische davon umfasst.
  13. Folie nach Anspruch 1, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) aus einer schäumenden Substanz besteht, welche eine flüssige Matrix und ein Schäummittel umfasst.
  14. Folie nach Anspruch 13, dadurch gekennzeichnet, dass die flüssige Matrix aus einer Substanz besteht, die der Gruppe angehört, die Wasser, Formaldehyde, Epoxyharze, Polyesterharze, Polyurethanharze und Acrylharze umfasst.
  15. Folie nach Anspruch 13, dadurch gekennzeichnet, dass das Schäummittel für die schäumende Substanz der Gruppe angehört, welche Natriumbicarbonat, Azodicarbonamid und deren Derivate, Benzolsulfonitrylhydrazid, Benzolsulfonylhydrazid oder Harnstoffderivate umfasst.
  16. Folie nach Anspruch 13, dadurch gekennzeichnet, dass das Schäummittel von dem Typ ist, der mit der flüssigen Matrix spontan reagiert, und in den Mikrokügelchen (22) enthalten ist, welche eine nach Zufuhr von Energie zerbrechbare Membran aufweisen.
  17. Folie nach Anspruch 13, dadurch gekennzeichnet, dass die schäumende Substanz außerdem wenigstens ein Inhibitormittel für die Schäumreaktion umfasst.
  18. Verfahren zur Herstellung einer biegsamen Verpackungsfolie, geeignet zur Verwendung in einer herkömmlichen Verpackungsmaschine nach einem oder mehreren der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass wenigstens eine Substanz (8) mit der gesamten Oberfläche eines Films (2) verbunden ist, wobei die besagte Substanz (8) bei Zufuhr von Energie irreversibel expandierbar ist.
  19. Verfahren nach Anspruch 18, dadurch gekennzeichnet, dass die expandierbare Substanz (8) auf die gesamte Oberfläche des Films (2) aufgetragen wird.
  20. Verfahren nach Anspruch 18, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) in das den Film (2) bildende Material vor dessen Extrusion eingebracht worden ist.
  21. Verfahren nach Anspruch 18, dadurch gekennzeichnet, dass auf den Film (2) eine Substanz aufgebracht wird, welche Mikrokügelchen (22) enthält, die eine dehnbare Membran aufweisen, in der die besagte expandierbare Substanz (8) enthalten ist.
  22. Verfahren nach Anspruch 20, dadurch gekennzeichnet, dass die besagte expandierbare Substanz (8) aus Mikrokügelchen (22) besteht, die eine dehnbare Membran umfassen, in der die besagte expandierbare Substanz enthalten ist.
  23. Verfahren nach Anspruch 21, dadurch gekennzeichnet, dass nach dem Aufbringen der expandierbaren Substanz (8) auf den besagten Film (2) ein weiterer Film (4) auf den besagten Film aufgebracht wird.
  24. Verfahren nach Anspruch 21, dadurch gekennzeichnet, dass die expandierbaren Mikrokügelchen (22) mit dem Film (2) in einer Matrix verteilt, die durch einen Klebstoff gebildet wird, an den Film (2) gebunden werden.
  25. Verfahren nach Anspruch 21, dadurch gekennzeichnet, dass die expandierbaren Mikrokügelchen (22) an den Film (2) im Innern einer Matrix verteilt, die durch ein Gel gebildet wird, gebunden werden.
  26. Verfahren nach Anspruch 18, gekennzeichnet durch die Zufuhr von Energie zu dem besagten Film (2) unter Registerregelung, an den die besagte expandierbare Substanz gebunden ist.
EP00935063A 1999-05-18 2000-05-18 Biegsame folie, insbesondere verpackungsfolie, sowie verfahren zur herstellung derselben Expired - Lifetime EP1185466B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITVE990023 1999-05-18
IT1999VE000023A IT1311791B1 (it) 1999-05-18 1999-05-18 Nastro flessibile a bolle, particolarmente per imballaggi e metodo perla sua realizzazione.
PCT/EP2000/004502 WO2000069747A1 (en) 1999-05-18 2000-05-18 Flexible wrap, particularly for packaging, and method for its production

Publications (2)

Publication Number Publication Date
EP1185466A1 EP1185466A1 (de) 2002-03-13
EP1185466B1 true EP1185466B1 (de) 2003-08-13

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EP00935063A Expired - Lifetime EP1185466B1 (de) 1999-05-18 2000-05-18 Biegsame folie, insbesondere verpackungsfolie, sowie verfahren zur herstellung derselben

Country Status (8)

Country Link
EP (1) EP1185466B1 (de)
AT (1) ATE247045T1 (de)
AU (1) AU5068100A (de)
DE (1) DE60004524T2 (de)
DK (1) DK1185466T3 (de)
ES (1) ES2204608T3 (de)
IT (1) IT1311791B1 (de)
WO (1) WO2000069747A1 (de)

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Publication number Priority date Publication date Assignee Title
EP2272647A1 (de) 2009-07-10 2011-01-12 Nordenia Technologies GmbH Verfahren zur Herstellung einer ein- oder mehrschichtigen expandierbaren Folie

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IT1315461B1 (it) * 1999-08-10 2003-02-11 Giorgio Trani Materiale filmabile con caratteristiche modificabili selettivamente.
WO2010068475A1 (en) * 2008-11-25 2010-06-17 Kellogg Company Method for packaging by activating an expandable material
MX369481B (es) 2010-09-10 2019-11-11 Henkel IP & Holding GmbH Adhesivo mejorado que tiene propiedades aislantes.
US9657200B2 (en) 2012-09-27 2017-05-23 Henkel IP & Holding GmbH Waterborne adhesives for reduced basis weight multilayer substrates and use thereof
WO2015084422A1 (en) 2013-12-05 2015-06-11 Massachusetts Institute Of Technology Object of additive manufacture with encoded predicted shape change
US10513089B2 (en) 2014-10-08 2019-12-24 Massachusetts Institute Of Technology Self-transforming structures
US11052597B2 (en) 2016-05-16 2021-07-06 Massachusetts Institute Of Technology Additive manufacturing of viscoelastic materials
US10633772B2 (en) 2017-01-12 2020-04-28 Massachusetts Institute Of Technology Active woven materials
US10549505B2 (en) 2017-01-12 2020-02-04 Massachusetts Institute Of Technology Active lattices
US10953605B2 (en) 2017-04-04 2021-03-23 Massachusetts Institute of Technology, Cambridge, Massachusetts and Steeicase Incorporated Additive manufacturing in gel-supported environment
JP7236432B2 (ja) 2017-07-18 2023-03-09 ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェン 発泡性組成物の誘電加熱
CN111757810A (zh) 2017-08-25 2020-10-09 汉高知识产权控股有限责任公司 形成改进的保护性生态友好囊袋的方法和由其制成的包装和产品
EP3527361A1 (de) * 2018-02-16 2019-08-21 Henkel AG & Co. KGaA Verfahren zur herstellung eines mehrschichtigen substrats
CN113164265A (zh) 2018-11-12 2021-07-23 奥索冰岛有限公司 包含基于细丝的结构的医疗器材
US11883306B2 (en) 2019-11-12 2024-01-30 Ossur Iceland Ehf Ventilated prosthetic liner
CN115052817B (zh) 2019-12-11 2024-04-05 普里吉斯创新包装有限责任公司 可充放气的幅材
US11993438B2 (en) 2020-07-01 2024-05-28 Pregis Innovative Packaging Llc User-expandable packaging
EP4188668A4 (de) * 2020-07-31 2024-05-29 Pregis Innovative Packaging LLC Expandierbare bahn mit in-situ-kombination von expansionsmaterialkomponenten

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BE754276A (fr) * 1969-08-02 1970-12-31 Thedieck Reiner Materiau composite
DE2043418A1 (en) * 1970-09-02 1972-03-16 Marburger Tapetenfabrik J.B. Schäefer GmbH &Co KG, 3570 Kirchhain Plastics strip material - with embossed pattern of foamed plastic on one or both faces
FR2446176A1 (fr) * 1979-01-15 1980-08-08 Remy Jean Pierre Materiau d'emballage et de calage enveloppant souple et son procede de fabrication
DE3428471C2 (de) * 1984-08-02 1986-09-11 Erwin Behn Verpackungsbedarf Gmbh, 4150 Krefeld Folienverbund

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2272647A1 (de) 2009-07-10 2011-01-12 Nordenia Technologies GmbH Verfahren zur Herstellung einer ein- oder mehrschichtigen expandierbaren Folie

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WO2000069747A1 (en) 2000-11-23
DK1185466T3 (da) 2003-12-08
DE60004524D1 (de) 2003-09-18
ITVE990023A1 (it) 2000-11-18
EP1185466A1 (de) 2002-03-13
AU5068100A (en) 2000-12-05
IT1311791B1 (it) 2002-03-19
ATE247045T1 (de) 2003-08-15
ES2204608T3 (es) 2004-05-01
DE60004524T2 (de) 2004-04-08

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