DE102006012027A1 - Smooth, curved and/or spherical foam component for door panels, furniture and aircraft industry, has honeycombs bound to plastic foam, and bonding bridges for transmission of energy and positioning of the component to neighboring component - Google Patents

Smooth, curved and/or spherical foam component for door panels, furniture and aircraft industry, has honeycombs bound to plastic foam, and bonding bridges for transmission of energy and positioning of the component to neighboring component Download PDF

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Publication number
DE102006012027A1
DE102006012027A1 DE200610012027 DE102006012027A DE102006012027A1 DE 102006012027 A1 DE102006012027 A1 DE 102006012027A1 DE 200610012027 DE200610012027 DE 200610012027 DE 102006012027 A DE102006012027 A DE 102006012027A DE 102006012027 A1 DE102006012027 A1 DE 102006012027A1
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component
foam
plastic
smooth
curved
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DE200610012027
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German (de)
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GUNDELSHEIMER, HERBERT, DE
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GUNDELSHEIMER HILDEGARD
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Priority to DE200610012027 priority Critical patent/DE102006012027A1/en
Priority to DE200710021520 priority patent/DE102007021520A1/en
Publication of DE102006012027A1 publication Critical patent/DE102006012027A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
    • E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2479/00—Furniture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/18—Aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)

Abstract

The smooth, curved and/or spherical component out of foam for door panels, furniture and aircraft industry, comprises honeycombs bound to plastic foam. The component is produced by auxiliary form of two- and three-dimensional forms e.g. corner, edge, curve and/or ball and is optimized to sound insulation and/or heat insulation by adjustment of the properties of the used foam. Bonding bridges are provided for transmission of energy and positioning of the component to a possible neighboring component during installation of seams, edges and/or other appropriate profiling. The smooth, curved and/or spherical component out of foam for door panels, furniture and aircraft industry, comprises honeycombs bound to plastic foam. The component is produced by auxiliary form of two- and three-dimensional forms e.g. corner, edge, curve and/or ball and is optimized to sound insulation and/or heat insulation by adjustment of the properties of the used foam. Bonding bridges are provided for transmission of energy and positioning of the component to a possible neighboring component during installation of seams, edges and/or other appropriate profiling. During expansion process, appropriate material e.g. glass fiber reinforced plastic, sheet steel, aluminum plate and/or decorative foil is combined with the foamed component. The honeycomb is made of paper, recycled paper, plastic material and/or aluminum.

Description

Die Verwendung von Waben in Bauteilen, beispielsweise Türfüllungen oder Möbeln, aber auch im Flugzeugbau, ist Stand der Technik. Dabei wird diese Technik eingesetzt wenn es gilt, leichte und stabile Bauteile zu fertigen.The Use of honeycombs in components, such as door panels or furniture, but also in aircraft construction, is state of the art. This will be this Technology used when it comes to light and stable components too finished.

Im Innenbereich, beispielsweise im Möbelbau, kommen dabei meist kostengünstige Papierwaben zum Einsatz. Die dabei hergestellten sog. „Sandwichteile" bestehen aus einem Wabenkern und beidseitigen Deckschichten, die im Möbelbau hauptsächlich aus Holz- oder Kunststofffurnier, aber auch Dekorfolie bestehen können. Diese Sandwichteile sind nicht witterungsbeständig und empfindlich gegen Nässe und Kondenswasser. Außerdem kann es Probleme mit der Oberflächenoptik der Sandwichteile geben, da die Deckschichten meist aufgeklebt oder aufgebügelt werden und sich dabei Abdrücke der Waben zeigen. Dies ist besonders dort der Fall störend, wo relativ dünne und glänzende Deckschichten aufgeklebt werden.in the Indoors, for example in furniture, come mostly inexpensive Paper honeycomb used. The so-called "sandwich parts" produced thereby consist of one Honeycomb core and double-sided cover layers, mainly in furniture making Wood or plastic veneer, but also decorative foil can exist. These Sandwich weights are not weather-resistant and are sensitive to moisture and moisture Condensation. Furthermore there may be problems with the surface appearance give the sandwich parts, as the cover layers are usually glued or ironed and imprints show the honeycomb. This is especially disturbing where relatively thin and shining Glued on top layers.

Im Außenbereich, oder wo chemische Einflüsse und Belastungen auftreten, kommen Waben aus Kunststoff oder Aluminium zum Einsatz, wenn nicht gar auf andere Materialien zurückgegriffen werden muss, weil der Einsatz dieser hochwertigen Wabenmaterialien an deren Preis scheitert.in the Outdoor, or where chemical influences and loads occur, honeycombs come from plastic or aluminum used, if not resorted to other materials Must be because of the use of these high quality honeycomb materials at whose price fails.

Vereinzelt wurde versucht, aus einer Kombination von Polyuhrethanschaum, in dem Waben eingebettet – eingeschäumt – wurden, wasserfeste, stabile und kostengünstige Materialien herzustellen. Diese könnten auch für den Außenbereich oder für höherfeste Anwendungen geeignet sein. Dabei wäre die Kostenrelationen, entgegen den Kosten beim Einsatz von NOMEX-Waben oder Aluminiumwaben, sehr viel günstiger. Alleinesolche Verfahren sind im den Stand der Inspiration nicht hinaus gekommen.isolated was tried out of a combination of polyurethane foam, in the honeycomb embedded - foamed - were, waterproof, stable and cost-effective To produce materials. These could also be for outdoor use or for higher strength Applications be suitable. This would be the cost relations, contrary the cost of using NOMEX honeycomb or aluminum honeycomb, very much cheaper. Alone such methods are not in the state of inspiration come out.

Anlass der vorliegenden Patentanmeldung ist ein Verfahren, das dadurch gekennzeichnet ist, dass Waben – egal aus welchem Material, bevorzugt aber Waben aus Papier, Kunststoff, Aluminium und beschichtete Papierwaben – in expandierbare Kunststoffe wie EPS – expandierbares Polystyrol-, EPD – expandierbares Polypropylen- und/oder EPE – expandierbares Polyethylen- eingebunden werden.occasion The present patent application is a method that is characterized is marked that honeycomb - no matter of which material, but preferably honeycomb of paper, plastic, Aluminum and coated paper honeycomb - in expandable plastics like EPS - expandable Polystyrene, EPD - expandable Polypropylene and / or EPE - expandable Polyethylene be involved.

Dadurch entsteht ein Verbund, der besonders stabil, leicht und wasserfest ist und sich als Grundmaterial für vielfältige Anwendungen eignet.Thereby creates a composite that is particularly stable, lightweight and waterproof is and turns out to be the basic material for diverse Applications is suitable.

Die Herstellung dieses Materiales geschicht vorwiegend in einem diskontinuierlichen Verfahrensprozess, d.h. es werden einzelne, unterschiedlich große, unterschiedlich dicke Platten hergestellt.The Production of this material geschicht predominantly in a discontinuous Process, i. There are individual, different sizes, different made thick plates.

Dabei kann durch Anpassung der Eigenschaften der Wabe = große/kleine Wabendurchmesser, geringes/hohes Wabengewicht – oder der verwendeten Kunststoffschäume – höheres oder niedrigeres Raumgewicht – die Eignung des entstehenden Bauteiles dessen geplanten Einsatzzweck angepasst werden.there can by adjusting the characteristics of the honeycomb = large / small Wab diameter, low / high honeycomb weight - or the plastic foams used - higher or higher lower density - the Suitability of the resulting component whose intended purpose be adjusted.

Im allgemeinen werden diese sog. „Kernmaterialien" in einem weiteren Arbeitsschritt zu Sandwichbauteilen weiter verarbeitet. Dabei können Deckschichten aus glasfaserverstärktem Kunststoff, Stahlblech, Aluminiumblech, aber auch beispielsweise Holzfurnier, Holz, Gipskartonplatten, Glas etc. zum Einsatz kommen.in the In general, these so-called. "core materials" in another Work step to sandwich components further processed. It can cover layers made of glass fiber reinforced Plastic, sheet steel, aluminum sheet, but also for example Wood veneer, wood, plasterboard, glass, etc. are used.

Möglich ist aber auch, geeignete Deckschichten, beispielsweise aus glasfaserverstärkten Kunststoff, bereits bei der Herstellung der Kernmaterialien im eigentlichen Pressvorgang mit zu verbinden, so dass insoweit ein Arbeitsschritt – nämlich der des Verklebens – entfallen kann.Is possible but also, suitable cover layers, for example of glass fiber reinforced plastic, already in the production of the core materials in the actual Combining pressing process, so that so far one step - namely that of the Gluing - omitted can.

Durch Einsatz von Formen wird es außerdem möglich, zwei- und dreidimensionale Gebilde – beispielsweise Ecken, Profile, Kugeln, Rundungen – herzustellen, wobei die eingesetzten Waben jeweils in ihren Biegeeigenschaften entsprechend angepasst werden müssen.By It will also use forms possible, two-dimensional and three-dimensional structures - for example, corners, profiles, Balls, curves - to manufacture, each honeycomb used in their bending properties must be adjusted accordingly.

Bauteile, die mit diesem Verfahren hergestellt werden, eignen sich besonders für den Einsatz beim Verkleben hochwertiger, dünner Deckschichten, beispielsweise Dekorfolien oder dünne glasfaserverstärkte Kunststoffplatten mit hochglänzender Oberfläche. Diese erfordern – wie bereits oben ausgeführt – einen glatten Untergrund. Dieser wird durch das eingesetzte Schaummaterial sicher gestellt.components which are produced by this method, are particularly suitable for the Use when bonding high-quality, thin cover layers, for example Decorative films or thin glass fiber reinforced Plastic sheets with a high-gloss surface. These require - like already mentioned above - one smooth surface. This is due to the foam material used ensured.

Gleichzeitig eignet sich das Material hervorragend beispielsweise im temperaturgeführten Bereich, beispielsweise Kühlräumen, Kühlaufbauten, aber auch zur Fassadenisolierung oder für den Einsatz tragender Teile im Hausbau. Durch den Einsatz geeigneter Schaummaterialien können hierbei auch die benötigten Schalldämmeigenschaften erreicht werden.simultaneously the material is excellently suitable for example in the temperature-controlled area, for example, cold rooms, refrigerated bodies, but also for facade insulation or for the use of load-bearing parts in the house building. By using suitable foam materials can hereby also the needed ones sound insulation be achieved.

Als Waben kommen, wie oben bereits geschildert, auch Papierwaben zum Einsatz. Werden hohe Fertigkeiten benötigt so werden diese Papierwaben mittels Beschichtung mit Polyesterkunstharzen in ihren Festigkeitseigenschaften optimiert, so dass überragende Fertigkeiten erreicht werden, die solche von vielschichtigen Hartholzplatten übertreffen.When Honeycombs come, as already described above, also paper honeycomb for Commitment. If high skills are needed then these paper honeycombs become by means of coating with polyester resins in their strength properties optimized, so that outstanding Skills that exceed those of multi-layered hardwood boards.

Claims (1)

Glatte, gebogene und/oder kugelförmige Bauteile aus Schaumstoff, dadurch gekennzeichnet, dass • in einer Füllung aus EPS – expandiertes Polystyrol (Styropor), EPD – expandiertes Polypropylen und/oder EPE – expandiertes Polyethylen-Waben eingebunden sind • dass die beim Verschäumen obigen Kunststoffschaums eingebundenen Waben aus Papier – auch recyceltes Altpapier-, Kunststoff und/oder Aluminium bestehen können • durch geeignete Hilfsformen zwei- und dreidimensionale Formen, beispielsweise Ecken, Kanten, Rundungen, Kugeln, hergestellt werden können • dass durch Anpassung der Eigenschaften des eingesetzten Schaums die Bauteile in der Anforderung auf „Schalldämmung" und/oder „Wärmedämmung" optimiert und den Anforderungen entsprechend angepasst werden können • dass durch Einbau von Sicken und Kanten und andere geeignete Profilierungen Verbindungsstege vorgesehen werden können, die eine gute Kraftübertragung und Positionierung zu evtl. Nachbarbauteilen sicher stellen • dass beim Expandiervorgang geeignete Materialien, beispielsweise glasfaserverstärkter Kunststoff, Stahlblech, Aluminiumblech, Dekorfolie etc. als Deckschicht mit dem geschäumten Bauteil verbunden werden können.Smooth, curved and / or spherical construction parts of foam, characterized in that • in a filling of EPS - expanded polystyrene (styrofoam), EPD - expanded polypropylene and / or EPE - expanded polyethylene honeycomb are involved • that the honeycomb of paper incorporated in the foaming plastic foam above - recycled Waste paper, plastic and / or aluminum can be made • by suitable auxiliary forms two- and three-dimensional shapes, such as corners, edges, curves, balls, can be produced • that by adapting the properties of the foam used, the components in the requirement for "sound insulation" and / or "thermal insulation" can be optimized and adapted to the requirements • that by installing beads and edges and other suitable profiles, connecting bars can be provided which ensure good force transmission and positioning to any neighboring components • that during expansion process g Appropriate materials, such as glass fiber reinforced plastic, sheet steel, aluminum sheet, decorative film, etc. can be connected as a cover layer with the foamed component.
DE200610012027 2006-04-04 2006-04-04 Smooth, curved and/or spherical foam component for door panels, furniture and aircraft industry, has honeycombs bound to plastic foam, and bonding bridges for transmission of energy and positioning of the component to neighboring component Withdrawn DE102006012027A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200610012027 DE102006012027A1 (en) 2006-04-04 2006-04-04 Smooth, curved and/or spherical foam component for door panels, furniture and aircraft industry, has honeycombs bound to plastic foam, and bonding bridges for transmission of energy and positioning of the component to neighboring component
DE200710021520 DE102007021520A1 (en) 2006-04-04 2007-04-22 Flat element as a sandwich material with a plastic / honeycomb core and foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610012027 DE102006012027A1 (en) 2006-04-04 2006-04-04 Smooth, curved and/or spherical foam component for door panels, furniture and aircraft industry, has honeycombs bound to plastic foam, and bonding bridges for transmission of energy and positioning of the component to neighboring component

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Publication Number Publication Date
DE102006012027A1 true DE102006012027A1 (en) 2007-10-31

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DE200610012027 Withdrawn DE102006012027A1 (en) 2006-04-04 2006-04-04 Smooth, curved and/or spherical foam component for door panels, furniture and aircraft industry, has honeycombs bound to plastic foam, and bonding bridges for transmission of energy and positioning of the component to neighboring component
DE200710021520 Withdrawn DE102007021520A1 (en) 2006-04-04 2007-04-22 Flat element as a sandwich material with a plastic / honeycomb core and foam

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Application Number Title Priority Date Filing Date
DE200710021520 Withdrawn DE102007021520A1 (en) 2006-04-04 2007-04-22 Flat element as a sandwich material with a plastic / honeycomb core and foam

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013139361A1 (en) 2012-03-23 2013-09-26 Daimler Ag Vehicle component, and method for production thereof
DE102016205031A1 (en) * 2016-03-24 2017-09-28 Faurecia Innenraum Systeme Gmbh Method for producing a vehicle interior trim part and vehicle interior trim part
CN112874068A (en) * 2021-02-03 2021-06-01 北华航天工业学院 Large-size aluminum honeycomb composite material core plate and preparation process thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010094496A1 (en) * 2009-02-21 2010-08-26 Herbert Gundelsheimer Method and system for continuously producing sandwich material
DE102009025179A1 (en) * 2009-06-12 2010-12-16 Ruth Rundmund-Dingslaken Construction composite panel
DE102015109972A1 (en) 2015-06-22 2016-12-22 Klingele Papierwerke Gmbh & Co. Kg Composite component with a honeycomb core of an expanded honeycomb structure
DK180083B1 (en) 2018-07-05 2020-04-01 Vkr Holding A/S A method for packing a pre-assembled product for use at a roof in removable second packaging means.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013139361A1 (en) 2012-03-23 2013-09-26 Daimler Ag Vehicle component, and method for production thereof
DE102012005879A1 (en) 2012-03-23 2013-09-26 Daimler Ag Vehicle component and method for its production
DE102016205031A1 (en) * 2016-03-24 2017-09-28 Faurecia Innenraum Systeme Gmbh Method for producing a vehicle interior trim part and vehicle interior trim part
CN112874068A (en) * 2021-02-03 2021-06-01 北华航天工业学院 Large-size aluminum honeycomb composite material core plate and preparation process thereof

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8181 Inventor (new situation)

Inventor name: GUNDELSHEIMER, HERBERT, 96050 BAMBERG, DE

R081 Change of applicant/patentee

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Free format text: FORMER OWNER: GUNDELSHEIMER, HILDEGARD, 96050 BAMBERG, DE

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