EP0705948B1 - Plaque multicouche entretoisée en polycarbonate pour des couvertures dures, ainsi que des couvertures à surface large ou étroite comportant la plaque multicouche entretoisée - Google Patents

Plaque multicouche entretoisée en polycarbonate pour des couvertures dures, ainsi que des couvertures à surface large ou étroite comportant la plaque multicouche entretoisée Download PDF

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Publication number
EP0705948B1
EP0705948B1 EP95115225A EP95115225A EP0705948B1 EP 0705948 B1 EP0705948 B1 EP 0705948B1 EP 95115225 A EP95115225 A EP 95115225A EP 95115225 A EP95115225 A EP 95115225A EP 0705948 B1 EP0705948 B1 EP 0705948B1
Authority
EP
European Patent Office
Prior art keywords
cross
braced
multilayer cross
polycarbonate
coverings
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
EP95115225A
Other languages
German (de)
English (en)
Other versions
EP0705948A1 (fr
Inventor
Volker Dr. Benz
Uwe Jacobsen
Klaus Kerk
Michael Dr. Müller
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
Roehm GmbH Darmstadt
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 Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Publication of EP0705948A1 publication Critical patent/EP0705948A1/fr
Application granted granted Critical
Publication of EP0705948B1 publication Critical patent/EP0705948B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • 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

Definitions

  • the invention relates to multi-wall sheets made of polycarbonate for hard roofing of buildings or parts of buildings.
  • the materials used must not burn or melt when burning objects hit them in such a way that the burning object falls into the roofed part of the building and can trigger a secondary fire there.
  • the suitability of roofing material is checked according to DIN 4102 Part 7 by a fire test. In this test, wood wool, which is located in a wire frame, is burned off at four points on the test roof under defined conditions.
  • Essential criteria for passing the test are that on the surface or inside, destroyed surfaces do not exceed a defined size, no liquid, burning parts drip down the roof edge, no flames occur on the underside of the roof, no parts burn off or glow and that the roof remains closed so that no burning or smoldering parts can fall through.
  • DIN 4102 Part 7 and provide protection against secondary fire are approved as roofing of buildings or parts of buildings. Exemptions are only granted if there is no significant risk from the risk of secondary fires. This can be the case, for example, for buildings or parts of buildings that are generally not entered by people and do not contain any highly flammable substances, or for roofs of small size where it is easy to avoid secondary fires without endangering them.
  • DE-U-94 08 574 describes extruded flat multi-wall sheets made of thermoplastic material, in which one outer wall is at least 1.3 times as thick as the other, whereby the hail resistance is improved. A thickness between 0.3 and 2.5 mm is proposed for the lower flange. In the case of polycarbonate, 0.8 to 1.1 mm are stated to be favorable.
  • the object of the present invention was to develop a multi-wall sheet that meets the requirements for hard roofing according to DIN 4102 Part 7.
  • the object was achieved by a multi-wall plate made of polycarbonate, in which the belt surfaces are at least 3 mm thick, the webs are at least 2.5 mm thick, the webs are at a distance of at most 40 mm and the height of the plate is at least 30 mm.
  • the effect of the invention is based essentially on the specified geometric dimensions of the multi-wall sheet, which are designed so that surprisingly there is no burning of the lump of wood wool in the fire test.
  • the multi-wall sheets made of polycarbonate according to the invention are so far the only sheets of this type that meet the requirements according to DIN 4102 Part 7 for hard roofing . It is therefore possible to use the well-known architectural and structural advantages of the multi-wall sheet for large-scale roofing without the need for individual exemptions from the authorities. The need for justification and, if necessary, the dispute in the event of disagreement as to the existence of an exception requirement does not apply. This considerably extends the possible area of application for this type of high-quality, transparent or translucent roofing. Since in many cases, regardless of building regulations, builders have the desire for high safety standards, the multi-wall sheet according to the invention can also be used for elements previously designed as soft, transparent or translucent roofing, since it generally offers greater protection against burning objects hitting from above.
  • the multi-wall sheets according to the invention can be known per se Way are made by extrusion.
  • the belt surfaces must be at least 3 mm thick, the webs are at least 2.5 mm thick, the distance between the webs being at most 40 mm may be.
  • the plate height must be at least 30 mm.
  • the Dimensions of the belt surfaces, webs, web spacing and the plate height are essential for the fulfillment of the criteria of the fire test according to DIN 4102 Part 7.
  • the at least 3 mm thick belt on the top prevents a rapid melting of the surface.
  • the at least 2.5 mm thick Bridges hold the after the upper belt surface has melted glowing lump of wood wool removed from the lower belt surface. This however, only appears at a spacing of 40 mm or more of the plate of at least 30 mm possible.
  • Preferred dimensions for the thickness of the belt surfaces are 3 to 8 mm, particularly 3 to 4 mm are preferred.
  • Favorable dimensions for the thickness of the webs are 2.5 to 6 mm, particularly preferred are 3 to 4 mm.
  • Preferred The spacing between the bars is 20 to 40 mm.
  • the preferred plate height is 40 to 60 mm.
  • Usual other plate dimensions are 1 m to 10 m x 0.6 m to 2.1 m (length x Width).
  • Known thermoplastic bisphenol A plastics are known as polycarbonate used. Also copolymers that have limited proportions of others Bisphenol residues can be used. Usually contains the Plastic low proportions of UV absorbers. It is a matter of transparent or translucent colored polycarbonate. The Visibility is at least 20%, preferably 45 to 85%.
  • At least one panel surface is weatherproof, for example by a co-extruded layer of thermoplastic Plastic with a high proportion of UV absorbers. Suitable is e.g. a 50 ⁇ m thick layer with 5 - 10 wt .-% UV absorbers, preferably under Extrusion conditions are not or only slightly volatile.
  • Corresponding Equipped polycarbonate sheets are known from EP 0 372 213 B1. It has surprisingly it has been shown that plates with such coextruded cover layers behave even more advantageously in the fire test than corresponding panels without a top layer. Apparently emerges among the Fire conditions a charred insulation layer that the underlying Shields material.
  • the multi-wall sheets are used as material for transparent, hard but also for soft roofing of buildings or parts of buildings.
  • light strips of more than 20 m in length and more than 2 m in width can be carried out without interruption.
  • Large-scale transparent roofing of parts of buildings or entire buildings can be realized regardless of their external dimensions. Examples of large-scale roofing objects are roofs for shopping arcades, football stadiums, bus stops, train station halls, etc. In this sense, large-area roofing is to be seen as coherent areas, possibly interrupted by laying profiles, which go beyond the permissible exceptions within the hard roofing .
  • the multi-wall sheets according to the invention can be used in order to maintain the higher safety standard according to DIN 4102 Part 7.
  • roofing is created from a large number of individual, usually rectangular, slabs, which can be arranged in one or more rows.
  • customary laying systems for example with clamp connections, are considered, which are generally used in the construction of soft roofs.
  • Elastic sealing profiles on the legs and / or cover strips can be used to manufacture wind and waterproof roof covers.
  • Such mounting accessories are known, for example, from the delivery programs of manufacturers of multi-wall sheets.
  • the following table shows the results of the fire tests according to DIN 4102 Part 7 with four double-wall sheets of different designs.
  • the double-wall sheet 1 not according to the invention does not meet the requirements, while the double-wall sheets 2, 3 and 4 according to the invention pass the test.
  • Test according to DIN 4102 part 7 passed yes / no No Yes Yes Yes Yes

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Claims (8)

  1. Plaque multicouche entretoisée en polycarbonate,
    caractérisée en ce que
    les surfaces de moulure (1) ont au moins 3 mm d'épaisseur et les entretoises (2) ont au moins 2,5 mm d'épaisseur, les entretoises présentant un intervalle (a) d'au plus 40 mm et la plaque présentant une hauteur (b) d'au moins 30 mm.
  2. Plaque multicouche entretoisée selon la revendication 1,
    caractérisée en ce que
    les surfaces de moulure (1) ont une épaisseur de 3 à 8 mm et les entretoises (2) ont une épaisseur de 2,5 à 6 mm, les entretoises présentant un intervalle (a) de 20 à 40 mm et la plaque ayant une hauteur (b) de 40 à 60 mm.
  3. Plaque multicouche entretoisée selon la revendication 1 ou 2,
    caractérisée en ce qu'
    elle présente une perméabilité à la lumière d'au moins 20 %.
  4. Plaque multicouche entretoisée selon une ou plusieurs des revendications 1 à 3,
    caractérisée en ce qu'
    elle est munie sur au moins un côté d'une couche de matière synthétique qui contient un agent absorbant d'UV.
  5. Plaque multicouche entretoisée selon une ou plusieurs des revendications 1 à 4,
    caractérisée en ce qu'
    il s'agit d'une plaque bicouche entretoisée.
  6. Plaque multicouche entretoisée selon une ou plusieurs des revendications 1 à 4,
    caractérisée en ce qu'
    il s'agit d'une plaque tricouche entretoisée.
  7. Couverture de grande surface ayant des dimensions dépassant 20 x 2 mètres comme composant de bâtiments ou de parties de bâtiments,
    caractérisée en ce qu'
    elle se compose de plaques multicouches entretoisées selon une des revendications précédentes.
  8. Couverture de petite surface ayant des dimensions allant jusqu'à 20 x 2 mètres comme composant de bâtiments ou de parties de bâtiments,
    caractérisée en ce qu'
    elle se compose de plaques multicouches entretoisées selon l'une des revendications 1 à 6.
EP95115225A 1994-10-04 1995-09-27 Plaque multicouche entretoisée en polycarbonate pour des couvertures dures, ainsi que des couvertures à surface large ou étroite comportant la plaque multicouche entretoisée Expired - Lifetime EP0705948B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9415952U DE9415952U1 (de) 1994-10-04 1994-10-04 Stegmehrfachplatte aus Polycarbonat, geeignet für harte Bedachungen, sowie die Stegmehrfachplatte enthaltende, großflächige oder kleinflächige Bedachungen
DE9415952U 1994-10-04

Publications (2)

Publication Number Publication Date
EP0705948A1 EP0705948A1 (fr) 1996-04-10
EP0705948B1 true EP0705948B1 (fr) 2000-05-17

Family

ID=6914452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115225A Expired - Lifetime EP0705948B1 (fr) 1994-10-04 1995-09-27 Plaque multicouche entretoisée en polycarbonate pour des couvertures dures, ainsi que des couvertures à surface large ou étroite comportant la plaque multicouche entretoisée

Country Status (3)

Country Link
EP (1) EP0705948B1 (fr)
AT (1) ATE193078T1 (fr)
DE (2) DE9415952U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8568860B2 (en) 2007-11-12 2013-10-29 Sabic Innovative Plastics Ip B.V. Multiwall polymer sheet comprising branched polycarbonate
US8889248B2 (en) 2008-10-31 2014-11-18 Sabic Global Technologies B.V. Multiwall sheet, an article, a method of making a multiwall sheet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19729093C2 (de) * 1997-04-23 2000-05-25 Rodeca Kunststoffprofile Gmbh Verfahren und Werkzeug zur Herstellung eines plattenförmigen Wand- oder Dachelements

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8233007U1 (de) * 1982-11-25 1983-03-24 Röhm GmbH, 6100 Darmstadt Polycarbonat-kunststofftafel
DE8302842U1 (de) * 1983-02-03 1983-07-07 Röhm GmbH, 6100 Darmstadt Mehrschichtige stegplatte
DE3837589A1 (de) * 1988-11-05 1990-05-10 Roehm Gmbh Uv-absorber-haltige methacrylatschutzschicht fuer polycarbonat
DE9311613U1 (de) * 1993-08-04 1994-12-01 Degussa Ag, 60311 Frankfurt Kunststoffplatte, insbesondere in Güllegruben
DE9408574U1 (de) * 1994-05-25 1994-07-21 Röhm GmbH & Co. KG, 64293 Darmstadt Extrudierte, ebene Stegmehrfachplatte aus thermoplastischem Kunststoff

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8568860B2 (en) 2007-11-12 2013-10-29 Sabic Innovative Plastics Ip B.V. Multiwall polymer sheet comprising branched polycarbonate
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
DE59508344D1 (de) 2000-06-21
EP0705948A1 (fr) 1996-04-10
ATE193078T1 (de) 2000-06-15
DE9415952U1 (de) 1994-12-01

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