EP1130192A2 - Shuttering board - Google Patents

Shuttering board Download PDF

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Publication number
EP1130192A2
EP1130192A2 EP01890042A EP01890042A EP1130192A2 EP 1130192 A2 EP1130192 A2 EP 1130192A2 EP 01890042 A EP01890042 A EP 01890042A EP 01890042 A EP01890042 A EP 01890042A EP 1130192 A2 EP1130192 A2 EP 1130192A2
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EP
European Patent Office
Prior art keywords
plates
formwork
formwork panel
core
panel
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Withdrawn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
EP01890042A
Other languages
German (de)
French (fr)
Other versions
EP1130192A3 (en
Inventor
Manfred Goschenhofer
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.)
Apsys Gesellschaft fur Anwendungstechnische Polyurethan-Systeme Mbh
Original Assignee
Apsys Gesellschaft fur Anwendungstechnische Polyurethan-Systeme Mbh
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 Apsys Gesellschaft fur Anwendungstechnische Polyurethan-Systeme Mbh filed Critical Apsys Gesellschaft fur Anwendungstechnische Polyurethan-Systeme Mbh
Publication of EP1130192A2 publication Critical patent/EP1130192A2/en
Publication of EP1130192A3 publication Critical patent/EP1130192A3/en
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/05—Forming boards or similar elements the form surface being of plastics

Definitions

  • the invention relates to a panel according to the Preamble of claim 1.
  • the aim of the invention is to avoid these disadvantages and to propose a formwork panel of the type mentioned at the beginning, which is characterized by a simple structure and high stability and durability.
  • the proposed measures make it possible to produce relatively light formwork panels with a weight of less than, for example, 10kg / m 2 with a thickness of the formwork panels of 21 mm or less than 12kg / m 2 with a thickness of 27 mm, which are therefore also relatively light can handle.
  • the outer panels are largely insensitive to moisture and are made of high-pressure laminate (HPL) based on phenol-melamine or carbon or carbon fiber panels, it is ensured that the panels hardly absorb any moisture. This also avoids the risk of warping and warping, as well as a "bi-metal effect" or keying of the formwork panels, as can occur with conventional wooden formwork panels.
  • HPL high-pressure laminate
  • a circuit board according to the invention has a high wear resistance, especially with regard to scratch and Abrasion resistance. Furthermore, by using Plastic panels also have high alkali resistance and durability against release agents used in concrete, as well as the Possibility of easy cleaning. You can at the outside plates a matt but smooth Structure as used in particular for the production of Exposed concrete parts is required to be ensured.
  • the features of claim 2 result in the advantage of a very good rigidity of the formwork panels, which is also characterized by a high dimensional stability and resistance to mechanical stresses, for example when the formwork panel falls down, as can happen, for example, when it is being handled.
  • the bending stiffness of the formwork panel can be predetermined within wide limits and, for example, an elastic modulus between 5.0N / m 2 and 9000N / m 2 can be specified.
  • Another object of the invention is to provide a method for Propose production of formwork panels according to the invention is easy to do.
  • the formwork panels can be made using the proposed measures very simple and stiffer when used Make molds with very high accuracy. there is through the use of a breakthrough Plastic slats built on a simple grating Foaming of the core ensured.
  • a formwork panel 1 according to the invention has two plates matt smooth outer surface, which is preferably made of high pressure laminate Phenol melamine are made. Furthermore can carbon or carbon fiber plates are also provided for this.
  • These plates 2 which have a thickness of e.g. 1.5mm, are connected to one another via a core 3, the core 3 preferably made of rigid polyurethane foam or rigid integral foam is made.
  • the core 3 preferably made of rigid polyurethane foam or rigid integral foam is made.
  • this core 3 there is a grating 4 embedded, which can be seen from FIG. 2 with Openings 5 provided plastic strips 6 is constructed, that cross each other.
  • Breakthroughs 5 are provided in the plastic strips 6.
  • the formwork panel 1 on its side surfaces with a cover 7 from a tight elastic material, preferably polyurethane, provided.
  • the Edges of the covers 7 expediently have only one very small radius of e.g. 0.3 mm.
  • the formwork panels 1 are produced in such a way that that a plate 2 inserted into a mold and on this Grid 4 is placed. After the mold is closed the core is foamed, with 5 in the grate the foam material is very good and light in the shape can distribute. Depending on the Foam-adjusting pressure increases the hardness and rigidity of the Core 3 and thus the control panel 1 are affected and so the respective requirements are taken into account.
  • To the molds 7 are in the form of a liquid or viscous hardening mass on the side surfaces of the Formwork panel applied. Since the covers 7 to a high degree Having elasticity is achieved with such formwork panels 1 built formwork a high degree of tightness.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Laminated Bodies (AREA)

Abstract

The shuttering panel (1) comprises two plates (2) which are joined to one another by means of a core (3) of hard foam material, and consist of a dense, wear and moisture resistant material, with the panel edges provided with a cover (7) consisting of a dense elastic material. Also claimed is a method for producing such a panel. It involves positioning of plastic grids between the plates (2), foaming the place between these plates, and applying a liquid hardenable material to the panel edges.

Description

Die Erfindung bezieht sich auf eine Schaltafel gemäß dem Oberbegriff des Anspruches 1.The invention relates to a panel according to the Preamble of claim 1.

Bekannte derartige Schaltafeln bestehen im wesentlichen aus einer Holzkonstruktion, wobei die Oberflächen mit Lasuren, Lacken oder anderen Überzügen zum Schutz der Oberflächen versehen sind.Known panels of this type essentially exist from a wooden structure, the surfaces with glazes, Paint or other coatings to protect the surfaces are.

Dabei ergeben sich jedoch verschiedene Nachteile. So weisen solche Schaltafeln nur eine sehr begrenzte Lebensdauer auf, da Holz durch Feuchtigkeitseinwirkungen sowie mechanische Beanspruchungen und Feuchtigkeitsschwankungen relativ schnell beschädigt werden und unbrauchbar werden. Außerdem treten bei solchen Schaltafeln Stärkenänderungen auf, die durch Änderungen des Feuchtegehaltes der Schaltafeln bedingt sind. Weiters weisen bekannte Schaltafeln erhebliche Stärkeunterschiede auf und es kommt auch aufgrund der Einwirkung von Feuchtigkeit auch zu Verbiegungen der Schaltafeln, wodurch bei Verwendung solcher Schaltafeln auf den mit diesen hergestellten Betonteilen sichtbare Spuren ergeben, die z.B. für Sichtbetonteile nicht akzeptabel sind.However, there are various disadvantages. So such panels have a very limited life due to the effects of moisture and mechanical stress on wood Stresses and moisture fluctuations relatively quickly be damaged and become unusable. Also join such form panels on changes in strength by changes of the moisture content of the formwork panels. Furthermore known formwork panels have considerable differences in thickness and it also comes from exposure to moisture also to bend the formwork panels, which in use such formwork panels on the concrete parts made with them result in visible traces, e.g. for exposed concrete parts are not acceptable.

Ziel der Erfindung ist es, diese Nachteile zu vermeiden und eine Schaltafel der eingangs erwähnten Art vorzuschlagen, die sich durch einen einfachen Aufbau und eine hohe Stabilität und Lebensdauer auszeichnet.The aim of the invention is to avoid these disadvantages and to propose a formwork panel of the type mentioned at the beginning, which is characterized by a simple structure and high stability and durability.

Erfindungsgemäß wird dies bei einer Schaltafel der eingangs erwähnten Art durch die kennzeichnenden Merkmale des Anspruches 1 erreicht.According to the invention this is at the beginning of a formwork panel mentioned type by the characterizing features of the claim 1 reached.

Durch die vorgeschlagenen Maßnahmen ist es möglich relativ leichte Schaltafeln mit einem Gewicht von weniger als z.B. 10kg/m2 bei einer Stärke der Schaltafeln von 21 mm oder weniger als 12kg/m2 bei einer Stärke von 27 mm herzustellen, die sich daher auch relativ leicht handhaben lässt. Da die außenliegenden Platten weitgehend feuchtigkeitsunempfindlich sind und z.B. aus Hochdrucklaminat (HPL) auf Phenol-Melaminbasis oder Carbon- oder Kohlefaserplatten hergestellt sind, ist sichergestellt, dass die Platten kaum Feuchtigkeit aufnehmen. Dadurch wird auch die Gefahr von Verbiegungen und Verwerfungen, sowie ein "Bi-Metall-Effekt" bzw. Schüsselung der Schalplatten, wie sie bei den herkömmlichen Schaltafeln aus Holz auftreten können, vermieden.The proposed measures make it possible to produce relatively light formwork panels with a weight of less than, for example, 10kg / m 2 with a thickness of the formwork panels of 21 mm or less than 12kg / m 2 with a thickness of 27 mm, which are therefore also relatively light can handle. Since the outer panels are largely insensitive to moisture and are made of high-pressure laminate (HPL) based on phenol-melamine or carbon or carbon fiber panels, it is ensured that the panels hardly absorb any moisture. This also avoids the risk of warping and warping, as well as a "bi-metal effect" or keying of the formwork panels, as can occur with conventional wooden formwork panels.

Außerdem weist eine erfindungsgemäße Schaltplatte eine hohe Verschleißfestigkeit, insbesondere im Hinblick Kratz- und Abriebfestigkeit auf. Weiters ist durch die Verwendung von Kunststoff-Platten auch eine hohe Alkali-beständigkeit und Beständigkeit gegen bei Beton verwendeten Trennmittel, sowie die Möglichkeit einer leichten Reinigung gegeben. Dabei können bei den außenliegenden Platten problemlos eine matte aber glatte Struktur, wie sie insbesondere für die Herstellung von Sichtbetonteilen erforderlich ist, sichergestellt werden.In addition, a circuit board according to the invention has a high wear resistance, especially with regard to scratch and Abrasion resistance. Furthermore, by using Plastic panels also have high alkali resistance and durability against release agents used in concrete, as well as the Possibility of easy cleaning. You can at the outside plates a matt but smooth Structure as used in particular for the production of Exposed concrete parts is required to be ensured.

Durch den vorgeschlagenen Aufbau der Schaltafeln ist es auch möglich kleine Toleranzen, z.B. kleiner als +/-0,5mm bei den Hauptabmessungen der Schaltafel einzuhalten.It is due to the proposed structure of the formwork panels also small tolerances possible, e.g. smaller than +/- 0.5mm at to comply with the main dimensions of the formwork panel.

In diesem Zusammenhang ist es vorteilhaft die Merkmale der Ansprüche 3 und 4 vorzusehen. Durch diese Maßnahmen ergibt sich der Vorteil eines gegenüber dem bisher verwendeten Holz geringeren thermischen Ausdehnungskoeffizienten und einer geringen Empfindlichkeit gegen Feuchtigkeit und Austrocknung, wodurch ein problemloser Aufbau einer Schalung mit den erfindungsgemäßen Schaltafeln ermöglicht wird. Außerdem kann der Radius der Kanten der Schaltafeln aufgrund der sehr gut bearbeitbaren, die Außenseiten tragenden Platten aus den vorgeschlagenen Materialien sehr klein, z.B. unter 0,3mm gehalten werden. Dadurch wird ein hohes Maß an Dichtheit der Schalung im Bereich der Stoßfugen zwischen zwei Schaltafeln ermöglicht.In this context, it is advantageous the characteristics of the Provide claims 3 and 4. These measures result the advantage of a compared to the previously used wood lower coefficient of thermal expansion and one low sensitivity to moisture and dehydration, which makes it easy to set up a formwork with the Formwork panels according to the invention is made possible. Besides, can the radius of the edges of the formwork panels due to the very good editable, the outer sides supporting plates from the proposed materials very small, e.g. less than 0.3mm being held. This ensures a high degree of tightness Formwork in the area of the butt joints between two formwork panels enables.

Durch die Merkmale des Anspruches 2 ergibt sich der Vorteil einer sehr guten Steifigkeit der Schalungstafeln, die sich auch durch eine hohe Formbeständigkeit und Widerstandsfähigkeit gegen mechanische Beanspruchungen, etwa auch bei einem Herabfallen der Schaltafel, wie es z.B. bei deren Handhabung geschehen kann, auszeichnet. Durch entsprechende Dimensionierung der Schaltafel und Wahl der eingesetzten Materialien kann die Biegesteifigkeit der Schaltafel in weiten Grenzen vorbestimmt werden und z.B. ein E-Modul zwischen 5,0N/m2 und 9 000N/m2 vorgegeben werden.The features of claim 2 result in the advantage of a very good rigidity of the formwork panels, which is also characterized by a high dimensional stability and resistance to mechanical stresses, for example when the formwork panel falls down, as can happen, for example, when it is being handled. By appropriately dimensioning the formwork panel and choosing the materials used, the bending stiffness of the formwork panel can be predetermined within wide limits and, for example, an elastic modulus between 5.0N / m 2 and 9000N / m 2 can be specified.

Ein weiteres Ziel der Erfindung ist es, ein Verfahren zur Herstellung erfindungsgemäßer Schaltafeln vorzuschlagen, das sich einfach durchführen läßt. Another object of the invention is to provide a method for Propose production of formwork panels according to the invention is easy to do.

Erfindungsgemäß werden hiezu die Merkmale des Anspruches 5 vorgeschlagen.According to the invention, the features of claim 5 suggested.

Durch die vorgeschlagenen Maßnahmen lassen sich die Schaltafeln sehr einfach und bei Verwendung entsprechend steifer Formen auch mit einer sehr hohen Genauigkeit herstellen. Dabei ist durch die Verwendung eines aus mit Durchbrüchen versehenen Kunststoffleisten aufgebauten Gitterrostes ein einfaches Schäumen des Kernes sichergestellt.The formwork panels can be made using the proposed measures very simple and stiffer when used Make molds with very high accuracy. there is through the use of a breakthrough Plastic slats built on a simple grating Foaming of the core ensured.

Die Erfindung wird nun anhand der Zeichnung näher erläutert. Dabei zeigen:

  • Fig. 1 schematisch einen Schnitt durch eine erfindungsgemäße Schaltafel und
  • Fig. 2 einen Schnitt durch einen Gitterrost.
    • The invention will now be explained in more detail with reference to the drawing. Show:
  • Fig. 1 shows schematically a section through a formwork panel according to the invention and
  • Fig. 2 shows a section through a grating.

    • Eine erfindungsgemäße Schaltafel 1 weist zwei Platten mit matter glatter Außenfläche auf, die vorzugsweise aus Hochdrucklaminat Phenol-Melamin hergestellt sind. Weiters können hiefür auch Carbon- oder Kohlefaserplatten vorgesehen werden.A formwork panel 1 according to the invention has two plates matt smooth outer surface, which is preferably made of high pressure laminate Phenol melamine are made. Furthermore can carbon or carbon fiber plates are also provided for this.

    Diese Platten 2, die eine Stärke von z.B. 1,5mm aufweisen, sind über einen Kern 3 miteinander verbunden, wobei der Kern 3 vorzugsweise aus Polyurethan-Hartschaum oder Hart-Integralschaum hergestellt ist. In diesen Kern 3 ist ein Gitterrost 4 eingebettet, der, wie aus der Fig. 2 zu ersehen ist aus mit Durchbrüchen 5 versehenen Kunststoffleisten 6 aufgebaut ist, die einander kreuzen.These plates 2, which have a thickness of e.g. 1.5mm, are connected to one another via a core 3, the core 3 preferably made of rigid polyurethane foam or rigid integral foam is made. In this core 3 there is a grating 4 embedded, which can be seen from FIG. 2 with Openings 5 provided plastic strips 6 is constructed, that cross each other.

    Wie aus der Fig. 2 zu ersehen ist, sind relativ große Durchbrüche 5 in den Kunststoffleisten 6 vorgesehen.As can be seen from Fig. 2, are relatively large Breakthroughs 5 are provided in the plastic strips 6.

    Wie aus der Fig. 1 zu ersehen ist, ist die Schalplatte 1 an ihren Seitenflächen mit einer Abdeckung 7 aus einem dichten elastischen Material, vorzugsweise Polyurethan, versehen. Die Kanten der Abdeckungen 7 weisen zweckmäßigerweise nur einen sehr kleinen Radius von z.B. 0,3 mm auf.As can be seen from FIG. 1, the formwork panel 1 on its side surfaces with a cover 7 from a tight elastic material, preferably polyurethane, provided. The Edges of the covers 7 expediently have only one very small radius of e.g. 0.3 mm.

    Die Herstellung der Schaltafeln 1 erfolgt in der Weise, daß eine Platte 2 in eine Form eingelegt und auf diese ein Gitterrost 4 aufgelegt wird. Nach dem Schließen der Form wird der Kern eingeschäumt, wobei sich aufgrund der Durchbrüche 5 in dem Gitterrost das Schaummaterial sehr gut und leicht in der Form verteilen kann. Dabei kann je nach dem sich beim Schäumen einstellenden Druck die Härte und Steifigkeit des Kernes 3 und damit der Schaltafel 1 beeinflußt werden und so auf die jeweiligen Anforderungen Bedacht genommen werden. Nach dem Entformen werden die Abdeckungen 7 in Form einer flüssigen oder viskosen erhärtenden Masse auf die Seitenflächen der Schaltafel aufgebracht. Da die Abdeckungen 7 ein hohes Maß an Elastizität aufweisen, erreicht eine mit solchen Schaltafeln 1 aufgebaute Schalung ein hohes Maß an Dichtheit.The formwork panels 1 are produced in such a way that that a plate 2 inserted into a mold and on this Grid 4 is placed. After the mold is closed the core is foamed, with 5 in the grate the foam material is very good and light in the shape can distribute. Depending on the Foam-adjusting pressure increases the hardness and rigidity of the Core 3 and thus the control panel 1 are affected and so the respective requirements are taken into account. To the molds 7 are in the form of a liquid or viscous hardening mass on the side surfaces of the Formwork panel applied. Since the covers 7 to a high degree Having elasticity is achieved with such formwork panels 1 built formwork a high degree of tightness.

    Claims (5)

    Schaltafel zur Herstellung einer Schalung, insbesondere für die Herstellung von Ortbeton-Bauten, dadurch gekennzeichnet, daß die Schaltafel (1) aus zwei über einen Kern (3) aus hartem Schaumstoff miteinander verbundenen dichten Platten (2) aus feuchtigkeitsunempfindlichem und verschleißfestem Material gebildet ist, wobei die Stirnseiten mit einer Abdeckung (7) aus einem dichten elastischen Material, vorzugsweise Polyurethan, abgedeckt sind.Formwork panel for the production of formwork, in particular for the production of in-situ concrete structures, characterized in that the formwork panel (1) is formed from two tight plates (2) made of moisture-insensitive and wear-resistant material which are connected to one another by a core (3) made of hard foam. the end faces being covered with a cover (7) made of a dense elastic material, preferably polyurethane. Schaltafel nach Anspruch 1, dadurch gekennzeichnet, daß in dem Kern (3) ein Gitterrost (4) aus mit Durchbrüchen (5) versehenen Kunststoffleisten (6) integriert ist, die senkrecht zu den Platten (2) stehen.Formwork panel according to Claim 1, characterized in that a grating (4) made of plastic strips (6) which are provided with openings (5) and which are perpendicular to the plates (2) is integrated in the core (3). Schaltafel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Kern (3) aus Hart- oder Hart-Integralschaum hergestellt ist.Formwork panel according to claim 1 or 2, characterized in that the core (3) is made of hard or hard integral foam. Schaltafel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Platten (2) aus Hochdrucklaminat (HPL) auf Phenol-Melaminbasis oder Carbon- oder Kohlefaserplatten hergestellt sind.Formwork panel according to one of Claims 1 to 3, characterized in that the plates (2) are made from high-pressure laminate (HPL) based on phenol-melamine or carbon or carbon fiber plates. Verfahren zur Herstellung einer Schaltafel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß eine Platte (2) aufgelegt, und der Gitterrost (4) auf die Platte (2) aufgelegt und auf den Gitterrost (4) die zweite Platte (2) aufgelegt und der Zwischenraum zwischen den Platten (2) ausgeschäumt wird, wonach auf die Seitenflächen die Abdeckung (7) in Form eines flüssigen, erhärtenden Materials aufgebracht wird.Method for producing a formwork panel according to one of Claims 1 to 4, characterized in that a plate (2) is placed on it, and the grating (4) is placed on the plate (2) and the second plate (2) is placed on the grating (4) placed and the space between the plates (2) is foamed, after which the cover (7) in the form of a liquid, hardening material is applied to the side surfaces.
    EP01890042A 2000-02-21 2001-02-20 Shuttering board Withdrawn EP1130192A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    AT2572000 2000-02-21
    AT2572000A AT411778B (en) 2000-02-21 2000-02-21 SCARF PANEL

    Publications (2)

    Publication Number Publication Date
    EP1130192A2 true EP1130192A2 (en) 2001-09-05
    EP1130192A3 EP1130192A3 (en) 2003-03-26

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01890042A Withdrawn EP1130192A3 (en) 2000-02-21 2001-02-20 Shuttering board

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    EP (1) EP1130192A3 (en)
    AT (1) AT411778B (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    AT513425A3 (en) * 2013-03-21 2014-12-15 Harsco Infrastructure Services Gmbh Chalkboard with plastic shell
    CN114801258A (en) * 2022-03-09 2022-07-29 中国船舶重工集团公司第七二五研究所 Preparation method of bidirectional grid structure reinforced foam sandwich composite material

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    WO1991006730A1 (en) * 1989-10-27 1991-05-16 Bo Allan Hjelm Shuttering panel for concreting
    FR2683574A1 (en) * 1991-11-07 1993-05-14 Soframat Shuttering panel made of a laminated material
    JPH05239914A (en) * 1991-11-29 1993-09-17 Kana Flex Hanbai Kk Formwork
    JPH0893217A (en) * 1994-09-28 1996-04-09 Shoei Kagaku Kogyo Kk Plate body for concrete form
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    WO1991006730A1 (en) * 1989-10-27 1991-05-16 Bo Allan Hjelm Shuttering panel for concreting
    FR2683574A1 (en) * 1991-11-07 1993-05-14 Soframat Shuttering panel made of a laminated material
    JPH05239914A (en) * 1991-11-29 1993-09-17 Kana Flex Hanbai Kk Formwork
    JPH0893217A (en) * 1994-09-28 1996-04-09 Shoei Kagaku Kogyo Kk Plate body for concrete form
    WO2000030845A1 (en) * 1998-11-19 2000-06-02 G.O.R. Applicazioni Special S.P.A. Multilayer panel and use thereof as a formwork
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    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    AT513425A3 (en) * 2013-03-21 2014-12-15 Harsco Infrastructure Services Gmbh Chalkboard with plastic shell
    AT513425B1 (en) * 2013-03-21 2015-10-15 Harsco Infrastructure Services Gmbh Chalkboard with plastic shell
    CN114801258A (en) * 2022-03-09 2022-07-29 中国船舶重工集团公司第七二五研究所 Preparation method of bidirectional grid structure reinforced foam sandwich composite material
    CN114801258B (en) * 2022-03-09 2024-05-10 中国船舶重工集团公司第七二五研究所 Preparation method of bidirectional grille structure reinforced foam sandwich composite material

    Also Published As

    Publication number Publication date
    ATA2572000A (en) 2003-10-15
    EP1130192A3 (en) 2003-03-26
    AT411778B (en) 2004-05-25

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