EP0530545B1 - Schrägstegmehrfachplatten aus aromatischen Polycarbonaten - Google Patents

Schrägstegmehrfachplatten aus aromatischen Polycarbonaten Download PDF

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Publication number
EP0530545B1
EP0530545B1 EP92113610A EP92113610A EP0530545B1 EP 0530545 B1 EP0530545 B1 EP 0530545B1 EP 92113610 A EP92113610 A EP 92113610A EP 92113610 A EP92113610 A EP 92113610A EP 0530545 B1 EP0530545 B1 EP 0530545B1
Authority
EP
European Patent Office
Prior art keywords
webs
approximately
aromatic polycarbonates
thickness
plates
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.)
Expired - Lifetime
Application number
EP92113610A
Other languages
English (en)
French (fr)
Other versions
EP0530545A1 (de
Inventor
Norbert Dr. Arnold
Wolfgang Wiebel
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.)
Roehm GmbH Darmstadt
Original Assignee
Degussa GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25958607&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0530545(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of EP0530545A1 publication Critical patent/EP0530545A1/de
Application granted granted Critical
Publication of EP0530545B1 publication Critical patent/EP0530545B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E04C2/54—Slab-like translucent elements
    • E04C2/543—Hollow multi-walled panels with integrated webs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24174—Structurally defined web or sheet [e.g., overall dimension, etc.] including sheet or component perpendicular to plane of web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24174—Structurally defined web or sheet [e.g., overall dimension, etc.] including sheet or component perpendicular to plane of web or sheet
    • Y10T428/24182—Inward from edge of web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24661—Forming, or cooperating to form cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]

Definitions

  • the invention relates to inclined multi-wall sheets, in particular multi-wall sheets made of aromatic polycarbonates or generally multi-wall sheets.
  • the most common embodiment is the double web plate, in which the webs run at regular intervals from one another perpendicularly to the plane of the plate, so that the cross-section results in the image of rows of rectangular chambers.
  • the webs form an angle of approx. 45 ° C with the plates, which leads to lower stresses and higher rigidity with a similar weight per unit area due to the improved transmission of transverse forces.
  • the plate will buckle before the maximum load is reached.
  • EP-A-0054 856 describes a large number of different conceivable geometries of double-wall sheets made of thermoplastic material. However, the prior art does not contain any information about basis weights, suggestions, geometries which are particularly suitable for certain plastics or different dimensions of the webs.
  • PC aromatic polycarbonates
  • a special embodiment of the invention are double-wall sheets, which are characterized in that at a thickness of approx. 0.7 mm for the two parallel plates, the inclined webs form an angle of approx. 45 ° with the plates and their thickness increases approx. 0.4 mm, while the thickness of the perpendicular webs is approx. 0.2 mm.
  • the distance between the latter webs is approx. 16 mm as well as the thickness of the web double plates.
  • the end web delimiting the plate on the right and left is preferably about 0.4 mm thick. With the specified dimensions, the basis weight is approx. 2.7 kg / m2.
  • Fig. 1 shows a picture of the embodiment.
  • the inclined web multiple plates according to the invention are produced by extrusion according to the known methods.
  • suitable coatings for further reinforcement, for improved flame retardancy, etc. by the known methods z. B. can be attached by coextrusion or lamination.
  • the plates according to the invention are used in the same fields as the known double wall plates.

Landscapes

  • Architecture (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Building Environments (AREA)
  • Finishing Walls (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Details Of Indoor Wiring (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)

Description

  • Die Erfindung betrifft Schrägstegmehrfachplatten, insbesondere Stegdoppelplatten aus aromatischen Polycarbonaten oder allgemein Stegmehrfachplatten.
  • Diese bestehen aus mindestens zwei parallel zueinander angeordneten Platten, die durch in bestimmten Anordnungen verlaufende Stege miteinander verbunden werden.
  • Häufigste Ausführungsform ist die Stegdoppelplatte, bei der die Stege in regelmäßigen Abständen zueinander senkrecht zur Plattenebene verlaufen, so daß im Querschnitt das Bild von sich aneinanderreihenden rechteckigen Kammern entsteht.
  • Wegen des anisotropen Verhaltens solcher Platten im Hinblick auf die Biegesteifigkeit wurden insbesondere für Produkte aus PMMA (Polymethylmethacrylat) andere Geometrien wie z. B. die sog. Fachwerkgeometrie entwickelt (Degussa, Vedril).
  • Bei diesen Geometrien bilden die Stege mit den Platten einen Winkel von ca. 45 °C, was infolge verbesserter Übertragung von Querkräften zu geringeren Spannungen und zu einer höheren Steifigkeit , bei ähnlichem Flächengewicht, führt.
  • Infolge dieser Maßgaben können beim Einbau dieser Produkte weitere Unterstützungsabstände der tragenden Elemente gewählt werden, wodurch sich der Materialaufwand für die Tragekonstruktion und der Zeitaufwand für die Installation vermindern.
  • Für Polycarbonat-Stegplatten wurde eine den PMMA-Fachwerkgeometrien entsprechender Aufbau bisher nicht verwirklicht.
  • Bekannt ist nur eine sogenannte X-Platte von 16 mm Dicke, bei der zusätzlich zu den senkrechten Stegen zwei 45 °-Stege pro Kammer in die Geometrie integriert sind (PolyX-16 der Fa.Polygal)
    Diese Platte erreicht wegen der zusätzlichen schrägen Stege mit 3,3 kg/m² ein Flächengewicht, das verglichen mit Standard-16-mm-PC-Stegplatten (ca. 2,7 bis 3,0 kg/m²) deutlich höher liegt.
  • Eine einfache Übertragung von Geometrien, wie sie sich bei der Herstellung von Platten aus PMMA bewährt haben, auf Polycarbonate ist aufgrund der unterschiedlichen Materialeigenschaften (z. B. E-Modul) nicht möglich.
  • Bei ausreichender Belastbarkeit tritt vor Erreichen der maximalen Belastung ein Knicken der Platte ein.
  • In der EP-A-0054 856 wird eine Vielzahl von verschiedenen denkbaren Geometrien von Stegdoppelplatten aus thermoplastischem Kunststoff bechrieben.
    Angaben über Flächengewichte, Anregungen, für bestimmte Kunststoffe besonders geeignete Geometrien oder unterschiedliche Dimensionierungen der Stege untereinander zu wählen, enthält der Stand der Technik jedoch nicht.
  • Es wurde nun gefunden, daß Schrägstegmehrfachplatten aus aromatischen Polycarbonaten (PC), bestehend aus zwei in einem vorgegeben Abstand parallel zueinander angeordneten Platten, die durch dazwischen angeordnete Stege miteinander verbunden sind, wobei der eine Teil der Stege -im Querschnitt gesehen- die obere und die untere Platte in Zick-Zack-Linien verbindet und dabei einem Winkel von ca. 45 ° bildet, die dadurch gekennzeichnet sind, daß der eine Teil die obere und die untere Platte in einer einfachen Zick-Zack-Linie verbindet, während der andere Teil in den Knotenpunkten der schräglaufenden Stege mit der oberen oder unteren Platte ansetzt und lotrecht zur gegenüberliegenden Platte verläuft, und die Dicke der schräglaufenden Stege ca. 0,4 mm beträgt, während die Dicke der lotrecht verlaufenden Stege sich auf ca. 0,2 mm beläuft, bei einem Anstand der Platten voneinander von ca. 16 mm und einem Flächengewicht von ca. 2,7 kg/m², eine ausreichende Belastbarkeit aufweisen, da das Knicken nach jenseits des Belastungsmaximums verschoben wird.
  • Dieser ist so definiert, daß die Durchbiegung bei einer Last von 750 N/m² nicht mehr als 5 % beträgt, bezogen auf die Breite der Platte.
  • Eine besondere Ausführungsform der Erfindung stellen Stegdoppelplatten dar, die dadurch gekennzeichnet sind, daß bei einer Dicke von ca. 0,7 mm für die beiden parallelen Platten, die schräglaufenden Stege einen Winkel von ca. 45 ° mit den Platten bilden und ihre Dicke sich auf ca. 0,4 mm beläuft, während die Dicke der lotrecht verlaufenden Stege ca. 0,2 mm beträgt.
    Der Abstand der letzgenannten Stege beläuft sich auf ca. 16 mm ebenso wie die Dicke der Stegdoppelplatten. Der die Platte jeweils rechts und links begrenzende Abschlußsteg ist bevorzugt ca. 0,4 mm dick. Bei den angegebenen Maßen ergibt sich ein Flächengewicht von ca. 2,7 kg/m².
  • Abb. 1 gibt ein Bild der Ausführungsform wieder.
  • Die erfindungsgemäßen Schrägstegmehrfachplatten werden nach den bekannten Verfahren durch Extrusion hergestellt.
    Auf den Ober- und/oder Unterseiten der Platten können natürlich geeignete Beschichtungen zur weiteren Verstärkung, zum verbesserten Flammschutz etc. nach den bekannten Verfahren z. B. durch Coextrusion oder Kaschieren angebracht werden.
  • Verwendung finden die erfindungsgemäßen Platten auf denselben Gebieten wie die bekannten Stegdoppelplatten.

Claims (1)

  1. Verfahren zur Herstellung von Schrägstegmehrfachplatten aus aromatischen Polycarbonaten (PC), bestehend aus zwei in einem vorgegebenen Anstand parallel zueinander angeordneten Platten, die durch dazwischen angeordnete Stege miteinander verbunden sind, wobei der eine Teil der Stege -im Querschnitt gesehen- die obere und die untere Platte in Zick-Zack-Linien verbindet und dabei einen Winkel von ca. 45 ° bildet, durch Extrusion
    dadurch gekennzeichnet, daß der eine Teil die obere und die untere Platte in einer einfachen Zick-Zack-Linie verbindet, während der andere Teil in den Knotenpunkten der schräglaufenden Stege mit der oberen oder unteren Platte ansetzt und lotrecht zur gegenüberliegenden Platte verläuft, und die Dicke der schräglaufenden Stege ca. 0,4 mm beträgt, während die Dicke der lotrecht verlaufenden Stege sich auf ca. 0,2 mm beläuft, bei einem Abstand der Platten voneinander von ca. 16 mm und einem Flächengewicht von ca. 2,7 kg/m².
EP92113610A 1991-09-04 1992-08-10 Schrägstegmehrfachplatten aus aromatischen Polycarbonaten Expired - Lifetime EP0530545B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9110957U 1991-09-04
DE9110957U DE9110957U1 (de) 1991-09-04 1991-09-04 Schrägstegmehrfachplatten aus aromatischen Polycarbonaten
SG9590623 1995-04-06

Publications (2)

Publication Number Publication Date
EP0530545A1 EP0530545A1 (de) 1993-03-10
EP0530545B1 true EP0530545B1 (de) 1994-10-26

Family

ID=25958607

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Application Number Title Priority Date Filing Date
EP92113610A Expired - Lifetime EP0530545B1 (de) 1991-09-04 1992-08-10 Schrägstegmehrfachplatten aus aromatischen Polycarbonaten

Country Status (9)

Country Link
US (1) US5294472A (de)
EP (1) EP0530545B1 (de)
JP (1) JP2582020Y2 (de)
AT (1) ATE113330T1 (de)
DE (2) DE9110957U1 (de)
DK (1) DK0530545T3 (de)
ES (1) ES2062856T3 (de)
HK (1) HK62995A (de)
IL (1) IL103018A (de)

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US6931796B2 (en) 2003-02-13 2005-08-23 General Electric Extruded transparent/translucent sheet for roof structures
US8889248B2 (en) 2008-10-31 2014-11-18 Sabic Global Technologies B.V. Multiwall sheet, an article, a method of making a multiwall sheet

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DE9404844U1 (de) * 1994-03-22 1995-07-27 Degussa-Hüls AG, 60311 Frankfurt Vollständig recyclierbarer Verbundkörper, insbesondere zur Herstellung von Möbelplatten
DE19508185C2 (de) * 1995-03-09 1997-01-16 Degussa Fachwerkplatte mit verbesserten Eigenschaften
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US20030215613A1 (en) * 2001-07-10 2003-11-20 Inteplast Group, Ltd. Light weight board of improved mechanical strength and process for production thereof
DE10212458A1 (de) * 2002-03-20 2003-10-02 Roehm Gmbh Hagelbeständiges Verbund-Acrylglas und Verfahren zu seiner Herstellung
DE10312783A1 (de) * 2003-03-21 2004-09-30 Röhm GmbH & Co. KG Lärmschutzwandsystem aus einem Sockel und einem transparenten Aufsatz
US7621299B2 (en) 2003-10-03 2009-11-24 Cabot Corporation Method and apparatus for filling a vessel with particulate matter
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CA2627367C (en) 2005-08-19 2016-10-11 William Lee Johnson, Sr. Method of producing composite members having increased strength
US8568860B2 (en) * 2007-11-12 2013-10-29 Sabic Innovative Plastics Ip B.V. Multiwall polymer sheet comprising branched polycarbonate
US8793965B2 (en) * 2008-11-18 2014-08-05 Zürcher Hochschule für Angewandte Wissenschaften (ZHAW) Construction elements for buildings
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JP5558217B2 (ja) * 2010-06-14 2014-07-23 株式会社日立製作所 乗客コンベア
SE535322C2 (sv) * 2010-09-24 2012-06-26 Cesium Holding Ab Förfarande för framställning av ett förstärkt, sammansatt ytavgränsande element, såsom en vägg, golv eller ett tak i en container samt element tillverkat enligt förfarandet
US9965768B1 (en) 2011-05-19 2018-05-08 Amazon Technologies, Inc. Location-based mobile advertising
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US11643242B2 (en) 2013-12-24 2023-05-09 Orbis Corporation Air vent for welded portion in plastic corrugated material, and process for forming welded portion
US10829265B2 (en) 2013-12-24 2020-11-10 Orbis Corporation Straight consistent body scores on plastic corrugated boxes and a process for making same
EP3089917B1 (de) 2013-12-24 2018-06-20 Orbis Corporation Wellkunststoffbehälter
US10625916B2 (en) 2013-12-24 2020-04-21 Orbis Corporation Plastic corrugated container with soft score line
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US20160102196A1 (en) * 2014-10-10 2016-04-14 Orbis Corporation Plastic Corrugation
ES2964921T3 (es) 2017-02-21 2024-04-10 Orbis Corp Cajas de plástico corrugado con líneas de pliegue marcadas
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6931796B2 (en) 2003-02-13 2005-08-23 General Electric Extruded transparent/translucent sheet for roof structures
US8889248B2 (en) 2008-10-31 2014-11-18 Sabic Global Technologies B.V. Multiwall sheet, an article, a method of making a multiwall sheet

Also Published As

Publication number Publication date
IL103018A (en) 1995-06-29
EP0530545A1 (de) 1993-03-10
ES2062856T3 (es) 1994-12-16
DK0530545T3 (da) 1995-04-10
IL103018A0 (en) 1993-02-21
HK62995A (en) 1995-05-05
ATE113330T1 (de) 1994-11-15
DE59200694D1 (de) 1994-12-01
JP2582020Y2 (ja) 1998-09-30
DE9110957U1 (de) 1991-11-07
US5294472A (en) 1994-03-15
JPH0557148U (ja) 1993-07-30

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