DE102004053871A1 - Method for producing in a combined process step a sandwich strip consisting of cover layers and a honeycomb core layer involves application of a plastic foam to the bottom cover layer - Google Patents

Method for producing in a combined process step a sandwich strip consisting of cover layers and a honeycomb core layer involves application of a plastic foam to the bottom cover layer Download PDF

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Publication number
DE102004053871A1
DE102004053871A1 DE200410053871 DE102004053871A DE102004053871A1 DE 102004053871 A1 DE102004053871 A1 DE 102004053871A1 DE 200410053871 DE200410053871 DE 200410053871 DE 102004053871 A DE102004053871 A DE 102004053871A DE 102004053871 A1 DE102004053871 A1 DE 102004053871A1
Authority
DE
Germany
Prior art keywords
producing
sandwich
plastic foam
process step
core layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE200410053871
Other languages
German (de)
Inventor
Herbert Gundelsheimer
Marcus Anton
Ralf Heyder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cohopa 95028 Hof De GmbH
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE200410053871 priority Critical patent/DE102004053871A1/en
Priority to PCT/EP2005/011882 priority patent/WO2006048318A1/en
Publication of DE102004053871A1 publication Critical patent/DE102004053871A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/326—Joining the preformed parts, e.g. to make flat or profiled sandwich laminates
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/608—Honeycomb structures
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0084—Foaming
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2266/0278—Polyurethane
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/022—Foam
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/024—Honeycomb
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness

Landscapes

  • Laminated Bodies (AREA)

Abstract

The method for producing in a combined process step a sandwich strip consisting of cover layers (2, 5) and a honeycomb core layer (3) involves application of a plastic foam (4) to the bottom cover layer. The foam improves the compressive and flexural strength of the strip and at same time bonds the core layer to the cover layers.

Description

Sandwichmaterialien zeichnen sich dadurch aus, dass in einer Mittelschicht, die üblicherweise aus Polyurethanschaum oder einer Wabenstruktur, beispielsweise aus Papier- oder Kunststoffwaben besteht, beidseitig Deckschichten aus beispielsweise glasfaserverstärktem Kunststoff, Aluminiumblech oder anderen Materialien aufgebracht werden.sandwich materials are characterized by the fact that in a middle class, usually polyurethane foam or a honeycomb structure, for example Paper or plastic honeycomb consists, on both sides of cover layers for example, glass fiber reinforced Applied plastic, aluminum sheet or other materials become.

Die Herstellung der Deckschichten geschieht üblicherweise in verschiedenen Arbeitsschritten. Beispielsweise werden die Deckschichten aus glasfaserverstärktem Kunststoff in einem separaten Arbeitsschritt gefertigt und kommen dann zum Einsatz als Deckschicht bei der Herstellung von Sandwichmaterial.The Production of the outer layers is usually done in different Steps. For example, the cover layers of glass fiber reinforced plastic manufactured in a separate step and then come to Use as topcoat in the production of sandwich material.

Kommt Polyurethanschaum zum Einsatz, so wirkt sich dies positiv auf die Druckfestigkeit aus. Hierunter leidet die Biegesteifheit.comes Polyurethane foam used, so it has a positive effect on the Pressure resistance. This is where bending stiffness suffers.

Beim Einsatz von Wabenmaterial als Mittelschicht wirkt sich dies positiv auf die Biegesteifheit des Materials aus. Hierbei kommt es zu Nachteilen bei der Druckfestigkeit. Die Erfindung ist für ein Ausführungsbeispiel in der Zeichnung schematisch im Schnitt dargestellt.At the Using honeycomb as a middle layer has a positive effect on the bending stiffness of the material. Here it comes to disadvantages the compressive strength. The invention is for an embodiment in the drawing shown schematically in section.

Die Erfindung besteht darin, dass der Fertigungsprozess in einem Arbeitsschritt geschieht, indem die Deckschichten (2) aus glasfaserverstärktem Material, Material aus nachwachsenden Rohstoffen – Naturfasern – oder anderen Stoffen beim eigentlichen Herstellungsprozess des Sandwichmaterials (1) in einem Arbeitsschritt integriert mit gefertigt werden (sog. One-step-Sandwich).The invention consists in the fact that the manufacturing process takes place in one working step by 2 ) made of glass fiber reinforced material, material from renewable raw materials - natural fibers - or other substances in the actual production process of the sandwich material ( 1 ) are integrated with in one step (so-called one-step sandwich).

Die Erfindung besteht weiterhin darin, dass beim Herstellungsprozess in eine Wabenstruktur (3), die aus Papier, Kunststoff oder anderen geeigneten Materialien – wie Aluminium – bestehen kann, in einem Arbeitsgang Kunststoffschaum (4) eingebracht wird. Dies führt zu einer erheblichen Verbesserung der Druckfestigkeit und der Biegesteifheit.The invention further consists in that in the manufacturing process in a honeycomb structure ( 3 ), which may consist of paper, plastic or other suitable materials, such as aluminum, in one operation plastic foam ( 4 ) is introduced. This leads to a considerable improvement in compressive strength and flexural rigidity.

Nach der Zeichnung wird das Sandwichmaterial (1) nach der Erfindung wie folgt hergestellt.After the drawing, the sandwich material ( 1 ) according to the invention as follows.

Eine untere Deckschicht (5) läuft in Transportrichtung (6) auf die Arbeitsfläche (7). Kunststoffschaum (4) wird in Pfeilrichtung (8) auf die Deckschicht (5) aufgebracht. Die Wabenstruktur (3) wird danach in Pfeilrichtung (9) aufgebracht. Der Kunststoffschaum (4) expandiert in die Wabenstruktur (3) und verbindet sich dabei mit der oberen Deckschicht (2), die in Pfeilrichtung (10) zugeführt wird.A lower cover layer ( 5 ) runs in the transport direction ( 6 ) on the work surface ( 7 ). Plastic foam ( 4 ) is displayed in the direction of the arrow ( 8th ) on the top layer ( 5 ) applied. The honeycomb structure ( 3 ) is then in the direction of arrow ( 9 ) applied. The plastic foam ( 4 ) expands into the honeycomb structure ( 3 ) and connects to the upper cover layer ( 2 ), in the direction of the arrow ( 10 ) is supplied.

Das Sandwichmaterial (1) aus der unteren Deckschicht (5), der Wabenstruktur (3) mit dem in die Wabenstruktur integrierten Kunststoffschaum (4) und der oberen Deckschicht (2) werden in Produktionsrichtung (6) einem Pressvorgang zugeführt, der durch eine Rolle 11 angedeutet ist.The sandwich material ( 1 ) from the lower cover layer ( 5 ), the honeycomb structure ( 3 ) with the integrated plastic foam in the honeycomb structure ( 4 ) and the upper cover layer ( 2 ) are used in the production direction ( 6 ) fed to a pressing process by a roller 11 is indicated.

Claims (1)

Die Erfindung betrifft ein Sandwichmaterial aus einer mittleren Schicht zwischen zwei Deckschichten, dadurch gekennzeichnet, dass der Fertigungsprozess zur Herstellung des Sandwichmaterials in einem Arbeitsgang erfolgt, indem die Deckschichten aus glasfaserverstärktem Material, Material aus nachwachsenden Rohstoffen – Naturfasern – oder anderen Stoffen beim eigentlichen Herstellungsprozess des Sandwichmateriales in einem Arbeitsschritt integriert mitgefertigt werden (sog. One-step-Sandwich) und dass die mittlere Schicht aus einer Wabenstruktur aus Papier, Kunststoff oder anderen geeigneten Materialien – wie Aluminium – besteht, in die in demselben Arbeitsgang zur Verbesserung der Druckfestigkeit und der Biegesteifheit ein Kunststoffschaum eingebracht wird.The invention relates to a sandwich material comprising a middle layer between two outer layers, characterized in that the manufacturing process for producing the sandwich material takes place in one operation by the cover layers of glass fiber reinforced material, renewable material - natural fibers - or other materials in the actual manufacturing process of the sandwich material integrated in one step (so-called one-step sandwich) and that the middle layer of a honeycomb structure made of paper, plastic or other suitable materials - such as aluminum - in the same operation to improve the compressive strength and flexural rigidity Plastic foam is introduced.
DE200410053871 2004-11-07 2004-11-07 Method for producing in a combined process step a sandwich strip consisting of cover layers and a honeycomb core layer involves application of a plastic foam to the bottom cover layer Withdrawn DE102004053871A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200410053871 DE102004053871A1 (en) 2004-11-07 2004-11-07 Method for producing in a combined process step a sandwich strip consisting of cover layers and a honeycomb core layer involves application of a plastic foam to the bottom cover layer
PCT/EP2005/011882 WO2006048318A1 (en) 2004-11-07 2005-11-07 Sandwich material, method for the production thereof, the use thereof and a container made of said sandwich material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410053871 DE102004053871A1 (en) 2004-11-07 2004-11-07 Method for producing in a combined process step a sandwich strip consisting of cover layers and a honeycomb core layer involves application of a plastic foam to the bottom cover layer

Publications (1)

Publication Number Publication Date
DE102004053871A1 true DE102004053871A1 (en) 2006-05-11

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DE200410053871 Withdrawn DE102004053871A1 (en) 2004-11-07 2004-11-07 Method for producing in a combined process step a sandwich strip consisting of cover layers and a honeycomb core layer involves application of a plastic foam to the bottom cover layer

Country Status (1)

Country Link
DE (1) DE102004053871A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008071618A3 (en) * 2006-12-11 2008-07-31 Univ Hamburg Lightweight wood-based board and process for producing it
WO2014063672A1 (en) 2012-10-15 2014-05-01 Gerald Neubauer Continuous method for producing a lightweight sandwich panel and lightweight sandwich panels producible according to this method
DE102016000726A1 (en) 2016-01-23 2017-07-27 Daimler Ag Composite element, in particular for a vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008071618A3 (en) * 2006-12-11 2008-07-31 Univ Hamburg Lightweight wood-based board and process for producing it
EA015211B1 (en) * 2006-12-11 2011-06-30 Универзитет Гамбург Lightweight wood-based board and process for producing it
AU2007332593B2 (en) * 2006-12-11 2013-08-22 Universitat Hamburg Lightweight wood-based board and process for producing it
WO2014063672A1 (en) 2012-10-15 2014-05-01 Gerald Neubauer Continuous method for producing a lightweight sandwich panel and lightweight sandwich panels producible according to this method
DE102016000726A1 (en) 2016-01-23 2017-07-27 Daimler Ag Composite element, in particular for a vehicle
WO2017125120A1 (en) 2016-01-23 2017-07-27 Daimler Ag Composite element, in particular for a vehicle
DE102016000726B4 (en) 2016-01-23 2019-04-11 Daimler Ag Composite element for a vehicle

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: COHOPA GMBH, 95028 HOF, DE

8139 Disposal/non-payment of the annual fee