DE3537962A1 - Composite honeycomb element with improved airborne-sound insulation and/or improved bullet-proofing - Google Patents

Composite honeycomb element with improved airborne-sound insulation and/or improved bullet-proofing

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Publication number
DE3537962A1
DE3537962A1 DE19853537962 DE3537962A DE3537962A1 DE 3537962 A1 DE3537962 A1 DE 3537962A1 DE 19853537962 DE19853537962 DE 19853537962 DE 3537962 A DE3537962 A DE 3537962A DE 3537962 A1 DE3537962 A1 DE 3537962A1
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Germany
Prior art keywords
honeycomb
filler
improved
sound insulation
composite element
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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Withdrawn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
DE19853537962
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German (de)
Inventor
Hans-Georg Ring
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.)
Ktl Kunststoff-Technik & Co 2844 Lemfoerde GmbH
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Individual
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Priority to DE19853537962 priority Critical patent/DE3537962A1/en
Publication of DE3537962A1 publication Critical patent/DE3537962A1/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Withdrawn legal-status Critical Current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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/04—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against air-raid or other war-like actions
    • E04H9/10—Independent shelters; Arrangement of independent splinter-proof walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0414—Layered armour containing ceramic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0442—Layered armour containing metal
    • F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
    • 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
    • B32B2305/028—Hollow fillers; Syntactic material
    • 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
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2375/00—Polyureas; Polyurethanes
    • 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
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention provides a composite honeycomb element with improved airborne-sound insulation and/or improved bullet-proofing. Said element is composed of an upper cover layer (2), of a core consisting of honeycombs (1) and of a lower cover layer (3), and this is characterised in that a pourable filling material (4) is located in the cavities of the honeycombs (1) between the upper and the lower cover layers (2, 3). <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Wabenverbund­ element mit verbesserter Luftschalldämmung und/oder verbesserter Schußfestigkeit.The present invention relates to a honeycomb system element with improved airborne sound insulation and / or improved shot resistance.

Die Verwendung von Wabenverbundelementen für leichte, biegesteife Konstruktionen in der Industrie sind be­ kannt. Der grundsätzliche Aufbau aus oberer Deckschicht, Wabenkern und unterer Deckschicht ist stets derselbe. Die Dimensionen der Dicken der Deckschichten und des Wabenkerns variieren in einem weiten Bereich. Das glei­ che gilt hinsichtlich der Materialauswahl. So können beispielsweise die Deckschichten aus mit Naturfasern oder Kunststoff-Fasern verstärkten Kunststoffen, aus Holz oder aus Metall bestehen. Als Wabenkern findet häufig ein solcher aus Pappe oder Aluminium Anwendung. Alle möglichen Variationen sind denkbar.The use of honeycomb composite elements for light, rigid structures in industry are knows. The basic structure of the top cover layer, The honeycomb core and lower cover layer are always the same. The dimensions of the thicknesses of the cover layers and the Honeycomb cores vary in a wide range. The same che applies to the choice of material. So can for example the cover layers made of natural fibers or plastic fiber reinforced plastics Made of wood or metal. As a honeycomb core often one made of cardboard or aluminum. All possible variations are possible.

Diese äußerst biegesteifen Wabenverbundelemente genügen jedoch in vielen Fällen nicht den Anforderungen hin­ sichtlich einer ausreichenden Luftschalldämmung bzw. einer befriedigenden Schußfestigkeit.These extremely rigid honeycomb composite elements are sufficient however, in many cases not according to the requirements clearly sufficient airborne sound insulation or a satisfactory shot resistance.

Aufgabe der vorliegenden Erfindung ist es daher, diese bekannten Wabenverbundelemente so zu verbessern, daß sie die gewünschten Luftschalldämmwerte aufweisen und darüber hinaus für besondere Anwendungszwecke schuß­ sicher sind.The object of the present invention is therefore this to improve known honeycomb composite elements so that they have the desired airborne sound insulation values and moreover, shot for special applications are safe.

Gelöst wird diese Aufgabe gemäß der Erfindung dadurch, daß man die Hohlräume der Waben mit einem rieselfähigen Füllstoff ganz oder teilweise ausfüllt.This object is achieved according to the invention by  that the cavities of the honeycomb can be poured with a free-flowing Fills all or part of the filler.

Gegenstand der vorliegenden Erfindung ist somit ein Wabenverbundelement mit verbesserter Luftschalldämmung und/oder verbesserter Schußfestigkeit, bestehend aus oberer Deckschicht, Wabenkern und unterer Deckschicht, das dadurch gekennzeichnet ist, daß sich in den Hohl­ räumen der Waben zwischen der oberen und der unteren Deckschicht ein rieselfähiger Füllstoff befindet.The present invention thus relates to Honeycomb composite element with improved airborne sound insulation and / or improved shot resistance, consisting of upper cover layer, honeycomb core and lower cover layer, which is characterized in that in the hollow clear the honeycomb between the top and bottom Top layer is a free-flowing filler.

Als rieselfähige Füllstoffe kommen alle nur denkbaren festen Füllstoffe in Frage, wobei die Korngröße der Füllstoffe von wenigen µ-bis zu cm-großen Kugeln betra­ gen kann. Vorteilhafterweise setzt man dabei Gemische verschiedener Korngrößen ein, da man auch auf diese Weise zusätzlich das jeweilige Schüttgewicht beeinflus­ sen kann. Als Füllstoffe seien beispielsweise sehr schwere Füllstoffe, wie Bleipulver und/oder Schrotkugeln, mittel­ schwere Füllstoffe, wie Sand, Gips, Glasmehl, Glaskügel­ chen und/oder Glashohlkügelchen, leichte Füllstoffe, wie Kunststoffgranulate, Holzspäne und/oder Holzmehl, und sehr leichte Füllstoffe, wie Polystyrol-Kügelchen, genannt. Selbstverständlich kann man auch Gemische der verschieden schweren Füllstoffe einsetzen, wobei die zu erzielende Verbesserung der Luftschalldämmung und der Schußfestig­ keit von dem Schüttgewicht der Füllstoffe, der Dicke des Wabenkörpers und der in die Waben eingebrachten Füll­ stoffmenge abhängt. Die erzielbaren verringerten Werte des Luftschallpegels auf der Empfängerseite des Waben­ verbundelements nähern sich dabei den durch das Berger′sche Massegesetz zu erwartenden Werten, wonach die Luftschall­ dämmung einer Wand von ihrer Masse d.h. dem Gewicht/m2, bestimmt wird.All conceivable solid fillers are suitable as free-flowing fillers, the grain size of the fillers being able to range from a few µ to cm-sized balls. Mixtures of different grain sizes are advantageously used, since it is also possible in this way to additionally influence the respective bulk density. Examples of fillers are very heavy fillers, such as lead powder and / or shot pellets, medium-heavy fillers, such as sand, gypsum, glass powder, glass beads and / or hollow glass beads, light fillers, such as plastic granules, wood chips and / or wood powder, and very light fillers, such as polystyrene beads. Of course, you can also use mixtures of fillers of different weights, the improvement to be achieved for airborne sound insulation and the strength of the weft strength depending on the bulk density of the fillers, the thickness of the honeycomb body and the amount of filler introduced into the honeycomb. The achievable reduced values of the airborne sound level on the receiver side of the honeycomb composite element approach the values to be expected by the Berger mass law, according to which the airborne sound insulation of a wall is determined by its mass, ie the weight / m 2 .

Der lose in die Waben eingebrachte Füllstoff wird durch die auftreffenden Schallwellen zu Schwingungen angeregt und setzt diese Energie durch Reibung der einzelnen Partikel gegeneinander in Wärme um. Auf diese Weise ist es somit möglich, die Luftschalldämmung der Wabenverbund­ elemente ohne wesentliche Beeinträchtigung ihrer sonsti­ gen Eigenschaften zu verbessern.The filler loosely introduced into the honeycomb is the impinging sound waves are excited to vibrate and releases this energy through friction of the individual Particles against each other in heat. That way it is therefore possible to reduce the airborne sound insulation of the honeycomb elements without significantly affecting your otherwise to improve properties.

Wabenverbundelemente können als Formteile im Automobil, Flugzeug, Schiff, Maschinen, Möbel und Gerätebau sowie als Türen verwendet werden. Hierbei ist es möglich, daß nur partielle Stellen mit einer verbesserten Luftschall­ dämmung versehen werden, wie z.B. bei der Motorraumtrenn­ wand eines Autos, wo in ganz bestimmten Bereichen eine höhere Luftschalldämmung gefordert wird, die durch parti­ elles Füllen der Waben zu erzielen ist. Durch diese auf bestimmte Flächensegmente begrenzte Verbesserung der Luft­ schalldämmung bietet das erfindungsgemäße Verfahren eine Fülle von Möglichkeiten.Honeycomb composite elements can be used as molded parts in automobiles, Aircraft, ship, machinery, furniture and equipment construction as well can be used as doors. It is possible that only partial areas with improved airborne noise insulation, such as at the engine compartment partition wall of a car, where in very specific areas higher airborne sound insulation is demanded by parti The honeycomb can be easily filled. Through this on certain surface segments limited air improvement The method according to the invention offers sound insulation Abundance of possibilities.

Neben der Verbesserung der Luftschalldämmung kann bei richtiger Auswahl von Elementdicke, Deckschicht und Füllstoff für die Waben die Schußfestigkeit derartiger Platten und Formteile ebenfalls verbessert werden. Auch hier ist es der lose eingefüllte rieselfähige Füllstoff wie Blei, Stahl, Kunststoffgranulat oder Sand, der die Geschoßenergie durch Reibung verringern kann.In addition to improving airborne sound insulation, correct selection of element thickness, top layer and Filler for the honeycomb the shot resistance of such Plates and moldings can also be improved. Also here it is the loose pourable filler such as lead, steel, plastic granulate or sand, which the Can reduce projectile energy through friction.

Die Herstellung der erfindungsgemäßen luftschalldämmen­ den Wabenverbundelemente wird nach den bekannten Ferti­ gungsmethoden durchgeführt. Ein zusätzlicher Arbeitsgang ist das Einbringen des losen Füllstoffes in die freien Hohlräume der Waben vor dem Verpressen (Verkleben) mit den Deckschichten. Diese Befüllungsoperation kann auch bei Großserien wirtschaftlich mit kontinuierlich oder intermittierend arbeitenden Fördergeräten durchgeführt werden. Wichtig ist, daß der ausgewählte Füllstoff aus­ reichende Temperaturbeständigkeit besitzt und die beim Verpressen oder Aushärten der Deckschichten notwendige Temperatur aushält.The production of the airborne sound insulation according to the invention the honeycomb composite elements is made according to the known Ferti  methods carried out. An additional step is the introduction of the loose filler into the free Cavities of the honeycomb before pressing (gluing) with the top layers. This filling operation can also for large series economically with continuous or intermittently operating conveyors will. It is important that the selected filler is made has sufficient temperature resistance and the Pressing or hardening of the top layers necessary Endures temperature.

Als besonders vorteilhaft hat es sich gemäß der vorlie­ genden Erfindung erwiesen, wenn man bei der Herstellung der erfindungsgemäßen gefüllten Wabenverbundelemente solche Deckschichten einsetzt, die in Richtung auf den Füllstoff aufschäumen und dabei den Zwischenraum zwi­ schen Füllstoffschicht und Deckschicht ganz oder teil­ weise ausschäumen, wobei besonders bevorzugt ist, wenn der gesamte Zwischenraum ausgeschäumt ist, weil dadurch vermieden wird, daß sich bei senkrechter Anordnung der Wabenverbundelemente Luftbrücken von der einen zur ande­ ren Deckschicht bilden.It has proven to be particularly advantageous according to the present ing invention proved if one in the manufacture the filled honeycomb composite elements according to the invention uses such cover layers, which in the direction of the Foam up the filler, leaving the space between filler layer and top layer in whole or in part foam out wisely, with particular preference if the entire space in between is foamed because of it is avoided that the vertical arrangement of the Honeycomb composite elements Airlift from one to the other form their cover layer.

Im Falle der Herstellung von schußsicheren Wabenverbund­ elementen, bei der vorzugsweise als Füllstoff Stahl­ und/oder Kupferkugeln eingesetzt werden, verwendet man als Deckschichten vorzugsweise solche aus Panzerstahl und/oder Keramik, gegebenenfalls in Verbindung mit Faser­ vliesen und/oder Geweben (Kevlar).In the case of the production of bulletproof honeycomb composite elements, preferably as a filler steel and / or copper balls are used as cover layers preferably those made of armored steel and / or ceramics, optionally in combination with fiber nonwovens and / or fabrics (Kevlar).

Die vorliegende Erfindung wird weiterhin anhand der Fig. 1 bis 3 und der nachfolgenden Beispiele, die be­ sonders bevorzugte Ausführungsformen darstellen, erläu­ tert, ohne sie jedoch darauf einzuschränken.The present invention is further explained with reference to FIGS. 1 to 3 and the following examples, which represent particularly preferred embodiments, but without restricting them.

Fig. 1 zeigt im Längsschnitt ein Wabenverbundelement, bei dem der Füllstoff 4 nur zum Teil die Waben 1 ausfüllt und die Zwischenräume 5, 6 zwischen Füllstoff 4 und oberer und unterer Deckschicht 2, 3 mit Polyurethanschaum ausgefüllt sind. Die Deckschichten bestehen aus einer äußeren Dekorschicht und einer darunter befindlichen verdichteten mit Kunststoff getränkten Glas­ faserschicht, die aufgrund ihrer chemischen Zusammensetzung der Bildung des Polyurethan­ schaumes 5, 6 diente. Fig. 1 shows in longitudinal section a honeycomb composite element in which the filler 4 only partially fills the honeycomb 1 and the spaces 5 , 6 between the filler 4 and the upper and lower cover layers 2 , 3 are filled with polyurethane foam. The cover layers consist of an outer decorative layer and an underlying compressed plastic fiber glass layer which, due to its chemical composition, served to form the polyurethane foam 5 , 6 .

Fig. 2 zeigt im Längsschnitt ein Wabenverbundelement gemäß Fig. 1, aber mit einem an einer Seite zusammengepreßten Rand, bei dem die dort zusam­ mengepreßten Waben vorher mit entsprechend weniger Füllstoff versehen waren. Fig. 2 shows in longitudinal section a honeycomb composite element according to FIG. 1, but with an edge pressed together on one side, in which the honeycomb pressed together there was previously provided with correspondingly less filler.

Fig. 3 zeigt in schematischer Darstellung eine bevor­ zugte Verfahrensweise zur Herstellung der er­ findungsgemäßen Wabenverbundelemente unter Verwendung von in situ hergestellten Prepegs. Fig. 3 shows a schematic representation of a preferred method for producing the inventive honeycomb composite elements using prepegs produced in situ.

Beispiel 1example 1

Gemäß der in Fig. 3 schematisch dargestellten kontinuier­ lich ablaufenden Verfahrensweise bringt man zunächst auf ein auf einer Dekorfolie befindliches Faservlies ein auf­ schäumbares Polyurethan-System auf, das zusammen mit dem Faservlies und der Dekorfolie die untere Deckschicht 3 bildet. Sofort nach dem Auftrag des aufschäumbaren Poly­ urethan-Systems legt man darauf die Waben und läßt diese in der ersten Doppelbandanlage von unten im gewünschten Maße (entsprechend der Menge des aufgebrachten Polyure­ than-Systems) zum Teil ausschäumen. Nach Passieren der ersten Doppelbandanlage bringt man in die Waben mittels einer Breitschlitzdüse den rieselfähigen Füllstoff bis zur gewünschten Höhe ein. Auf die so gefüllten Waben bringt man dann wie aus Fig. 3 ersichtlich die schäum­ bare obere Deckschicht 2 auf, die man vorher in ent­ sprechender Weise wie die untere Deckschicht 3 aus einer Dekorfolie, dem Glasfaservlies und dem aufschäumbaren Polyurethan-System hergestellt hat. Die Aufbringung er­ folgt mittels der Umlenkwalze selbstverständlich so, daß die Dekorfolie außen liegt und das schäumbare Polyurethan- System in die Waben von oben einschäumen kann. Nach Auf­ legen der oberen Deckschicht auf die Waben und vor Be­ ginn des Aufschäumens gelangt der so erhaltene Verbund in die zweite Doppelbandanlage, wo die Waben dann von oben ausgeschäumt werden. Nach Verlassen der zweiten Bandanlage wird der Verbund in die erfindungsgemäßen Wabenverbundelemente mit der gewünschten Länge zerschnit­ ten.According to the procedure shown schematically in FIG. 3, the first step is to apply a foamable polyurethane system to a non-woven fabric located on a decorative film, which together with the non-woven fabric and the decorative film forms the lower cover layer 3 . Immediately after the foamable polyurethane system has been applied, the honeycombs are placed on it and in the first double-belt system these are partially foamed from below to the desired extent (corresponding to the amount of the polyurethane system applied). After passing through the first double belt system, the free-flowing filler is introduced into the honeycomb to the desired height using a slot die. On the honeycomb filled in this way, as shown in FIG. 3, the foamable top cover layer 2 is brought up, which was previously made in a manner corresponding to the bottom cover layer 3 from a decorative film, the glass fiber fleece and the foamable polyurethane system. The application he follows of course by means of the deflecting roller so that the decorative film is on the outside and the foamable polyurethane system can foam into the honeycomb from above. After placing the top cover layer on the honeycombs and before the start of foaming, the composite thus obtained arrives in the second double belt system, where the honeycombs are then foamed from above. After leaving the second belt system, the composite is cut into the honeycomb composite elements according to the invention with the desired length.

Beispiel 2Example 2

Die erfindungsgemäßen Wabenverbundelemente lassen sich aber auch in kontinuierlicher und diskontinuierlicher Weise unter Verwendung von Prepegs herstellen. Prepegs sind vorher hergestellte, vorzugsweise mit Glasfaser­ vliesen verstärkte, unter Hitzeeinwirkung verschäumbare Platten, die auf der einen Seite eine Dekorfolie und auf der anderen Seite eine abziehbare Schutzfolie aufweisen können. The honeycomb composite elements according to the invention can be but also in continuous and discontinuous Create way using prepegs. Prepegs are previously made, preferably with glass fiber fleece reinforced, foamable under the influence of heat Plates that have a decorative film on one side and on the other side have a removable protective film can.  

Bei der diskontinuierlichen Verfahrensweise legt man auf die von der Schutzfolie befreite Prepegseite die Wabenschicht auf, füllt die Waben mit dem rieselfähi­ gen Füllstoff und legt auf die Waben dann in entspre­ chender Weise das zweite Prepeg auf. Der so erhaltene Schichtkörper wird dann in einer Heißpresse erhitzt, wobei die Prepegs aufschäumen und die Zwischenräume zwischen Füllstoffschicht und den Deckschichten aus­ schäumen.In the discontinuous procedure, one lays down on the prepeg side freed from the protective film Honeycomb layer, fills the honeycomb with the pourable filler and then lay on the honeycomb in accordingly the second prepeg. The so obtained Laminate is then heated in a hot press with the prepegs foaming and the gaps between the filler layer and the outer layers foam.

Bei der kontinuierlichen Verfahrensweise erfolgt im Prinzip der gleiche Verfahrensablauf wie beim diskon­ tinuierlichen Verfahren, nur mit dem Unterschied, daß das Übereinanderlegen der einzelnen Schichten und die Füllung der Waben auf einem Transportband erfolgt und anstelle der Heißpresse geheizte Walzen und zusätzlich eine Doppelbandanlage Anwendung finden, die gegebenen­ falls auch beheizt ist.In the continuous procedure, the Principle of the same procedure as for the discount continuous procedures, with the only difference that the superimposition of the individual layers and the The honeycomb is filled on a conveyor belt and heated rollers instead of the hot press and additional a double belt system will find the given if it is also heated.

Claims (6)

1. Wabenverbundelement, bestehend aus oberer Deck­ schicht, Wabenkern und unterer Deckschicht mit verbesserter Luftschalldämmung und/oder verbesser­ ter Schußfestigkeit, dadurch gekennzeichnet, daß sich in den Hohlräumen der Waben (1) zwischen der oberen und der unteren Deckschicht (2, 3) ein rieselfähiger Füllstoff (4) befindet.1. honeycomb composite element, consisting of upper cover layer, honeycomb core and lower cover layer with improved airborne sound insulation and / or improved shot resistance, characterized in that in the cavities of the honeycomb ( 1 ) between the upper and the lower cover layer ( 2 , 3 ) pourable filler ( 4 ) is located. 2. Wabenverbundelement nach Anspruch 1, dadurch ge­ kennzeichnet, daß der Hohlraum in den Waben (1) nur teilweise mit dem rieselfähigen Füllstoff (4) ausgefüllt und der Zwischenraum (5, 6) zwischen Füllstoff (4) und einer oder beiden Deckschichten (2, 3) ausgeschäumt ist, vorzugsweise mit Poly­ urethanschaum.2. honeycomb composite element according to claim 1, characterized in that the cavity in the honeycomb ( 1 ) is only partially filled with the free-flowing filler ( 4 ) and the intermediate space ( 5 , 6 ) between the filler ( 4 ) and one or both cover layers ( 2nd , 3 ) is foamed, preferably with poly urethane foam. 3. Wabenverbundelement nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Schüttgewicht des einge­ brachten rieselfähigen Füllstoffes (4) je nach ge­ wünschter Schalldämmung und/oder Schußsicherung sowie zulässigem Flächengewicht in einem weiten Be­ reich, wie er sich aus der Anwendung von Bleipulver bis geschäumtem Polystyrolgranulat ergibt, liegt.3. honeycomb composite element according to claim 1 and 2, characterized in that the bulk density of the pourable filler introduced ( 4 ) depending on the desired sound insulation and / or shot protection and permissible weight per unit area in a wide range, as it results from the use of lead powder foamed polystyrene granules. 4. Wabenverbundelement nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Füllstoff (4) nur in den Regionen des Wabenelements eingebracht ist, die der Störquelle am nächsten liegen. 4. honeycomb composite element according to claim 1 to 3, characterized in that the filler ( 4 ) is introduced only in the regions of the honeycomb element which are closest to the source of interference. 5. Wabenverbundelement nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß es schußsichere Deckschichten (2, 3) aus Panzerstahl und/oder Keramik in Verbin­ dung mit Faservliesen und Geweben aufweist.5. honeycomb composite element according to claim 1 to 4, characterized in that it has bulletproof cover layers ( 2 , 3 ) made of armored steel and / or ceramic in connec tion with nonwovens and fabrics. 6. Verfahren zur Herstellung der Wabenverbundelemente nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß der rieselfähige Füllstoff (4) in einem Arbeits­ gang in den Wabenkörper (1) eingebracht und mit den beiden Deckschichten (2, 3) verpreßt wird.6. A process for producing the honeycomb composite elements according to claim 1 to 5, characterized in that the free-flowing filler ( 4 ) is introduced into the honeycomb body ( 1 ) in one work step and is pressed with the two cover layers ( 2 , 3 ).
DE19853537962 1985-10-25 1985-10-25 Composite honeycomb element with improved airborne-sound insulation and/or improved bullet-proofing Withdrawn DE3537962A1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295002A2 (en) * 1987-06-02 1988-12-14 Michael Sacks Partitions
WO1992012855A1 (en) * 1991-01-22 1992-08-06 Short Brothers Plc Noise attenuation panel
DE4301565A1 (en) * 1993-01-21 1994-07-28 Bernd Baar Lightweight structural element
NL1015201C2 (en) * 2000-05-15 2001-11-19 Snel Golfkarton B V Bulletproof construction element for buildings made from laminated paper or cardboard, contains pressure distributing material, preferably sand
WO2006092543A1 (en) * 2005-03-01 2006-09-08 Stanley George Austin Aircraft
WO2013060308A1 (en) * 2011-10-25 2013-05-02 Benda Jiri Cellular panel
AT519620A1 (en) * 2017-02-14 2018-08-15 Hilitech Gmbh FOAM PLATE

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295002A2 (en) * 1987-06-02 1988-12-14 Michael Sacks Partitions
EP0295002A3 (en) * 1987-06-02 1990-10-03 Michael Sacks Partitions
WO1992012855A1 (en) * 1991-01-22 1992-08-06 Short Brothers Plc Noise attenuation panel
US5414232A (en) * 1991-01-22 1995-05-09 Short Brothers Plc Noise attenuation panel
DE4301565A1 (en) * 1993-01-21 1994-07-28 Bernd Baar Lightweight structural element
NL1015201C2 (en) * 2000-05-15 2001-11-19 Snel Golfkarton B V Bulletproof construction element for buildings made from laminated paper or cardboard, contains pressure distributing material, preferably sand
WO2006092543A1 (en) * 2005-03-01 2006-09-08 Stanley George Austin Aircraft
WO2013060308A1 (en) * 2011-10-25 2013-05-02 Benda Jiri Cellular panel
AT519620A1 (en) * 2017-02-14 2018-08-15 Hilitech Gmbh FOAM PLATE
AT519620B1 (en) * 2017-02-14 2018-11-15 Hilitech Gmbh FOAM PLATE

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