EP0010497A1 - Panel of plastics material - Google Patents
Panel of plastics material Download PDFInfo
- Publication number
- EP0010497A1 EP0010497A1 EP79400752A EP79400752A EP0010497A1 EP 0010497 A1 EP0010497 A1 EP 0010497A1 EP 79400752 A EP79400752 A EP 79400752A EP 79400752 A EP79400752 A EP 79400752A EP 0010497 A1 EP0010497 A1 EP 0010497A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- panel
- sheets
- cells
- plastics material
- order
- 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- Withdrawn
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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
- E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
- E04D3/32—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of plastics, fibrous materials, or asbestos cement
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D1/00—Roof covering by making use of tiles, slates, shingles, or other small roofing elements
- E04D1/24—Roofing elements with cavities, e.g. hollow tiles
-
- 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
- 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
-
- 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
- E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
- E04D3/28—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of glass or other translucent material
Definitions
- the invention relates to a plastic panel, in particular an extruded cellular thermoplastic panel.
- French patent No. 1,256,507 already discloses a double-walled sheet of thermoplastic material which can be used particularly as a cover for greenhouses, rural buildings and the like, characterized in that its structure comprises two superimposed elementary sheets and a series of continuous intermediate diaphragms which are parallel to each other and joined to the two elementary sheets so that, when the elementary sheets are separated, a series of juxtaposed but not intercommunicating chambers is formed.
- French Patent No. 2,073,791 a plastic panel characterized by the fact that it comprises two walls spaced from one another, which are connected together by a plurality of parallel ribs , spaced from each other, equidistant and perpendicular to the walls.
- thermoplastics are beginning to find wide use in the field of construction.
- all thermoplastics have the disadvantage of too much flexibility due to the open structure of the molecular chains, a disadvantage which is particularly noticeable if it is desired to use them with a large width between supports and with a small thickness.
- a snow load of seventy five to one hundred kilos per square meter should be considered. Under this load, a bending of several centimeters is observed when using plastics such as polycarbonate, yet particularly rigid in its cellular structure.
- plastics such as polycarbonate, yet particularly rigid in its cellular structure.
- the edges of these panels rest on profiles and the panels under load tend, due to the bending due to the load, to escape from the profiles which support them.
- French patent No. 1,347,592 already discloses a roofing element serving as an upper lighting panel consisting mainly or totally of a transparent synthetic material, which has on its opposite edges flanges making an angle with the adjacent main part. and allowing it to be placed on a roof opening in the manner of a hood, the main part being reinforced not only by the edges which have the shape of flat strips but also by the shape of its profile.
- the element consists of two or more plastic plates which are spaced apart from each other at least over most of their surface and which are connected together at least on two opposite edges.
- the aim of the present invention is to provide an element which is not subjected to bending work but to working in traction.
- the opposite edges tend to approach, which increases the seal between the element in question and the metal structure.
- the object of the present invention is to provide a remedy to the various difficulties mentioned above.
- the invention as characterized in the claim solves the problem of creating a plastic panel, in particular a thermoplastic foamed extrudate panel primarily used in the greenhouses 1 which tensile strength is relatively high and of the order of four hundred to five hundred kilos per square meter and whose formation of fogging can cause the formation of algae inside the alveoli.
- the panel designed according to the invention has a total seal produced on the lateral edges to prevent any penetration of foreign bodies and / or fluid into the cells due to a suction effect of these cells due to the pressure or the depression to which the panel is subjected.
- the plastic panel 1 consists of two sheets 2 and 3 separated by parallel spacers 4, 5. This panel is an extruded cellular thermoplastic panel.
- the transverse edges 6, 7, arranged perpendicular to the parallel spacers 4, 5, comprise a stop 8, 9 perpendicular to the plane of the panel 1. These stops 8, 9 are obtained during the forming of the panel 1.
- each cell 10, 11 formed by the sheets 2, 3, the parallel spacers 4, 5 and the stops 8, 9, comprise an air or gas pocket subjected before drying.
- the stop 8, 9 allowing the panel to work in tension and to make the best use of the performance of thermoplastics, also serves to make a connection between two panels 1 1 , 1 2 . It suffices that for the first panel II the stop 8 1 is directed upwards and that the stopper 8 2 of the second panel 1 2 is directed downwards.
- This attachment principle is also used for the connection between the panels 1 1 , 12 and a profile 12.
- the latter has on its sides a curved edge 13, 14 in which the stop 8 1 , 8 2 is hooked (see figure 3).
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Greenhouses (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
L'invention concerne un panneau en matière plastique, en particulier un panneau thermoplastique extrudé alvéolaire.The invention relates to a plastic panel, in particular an extruded cellular thermoplastic panel.
On connaît déjà par le brevet français n° 1.256.507 une feuille à double paroi en matière thermoplastique particulièrement utilisable comme couverture pour serres, constructions rurales et similaires caractérisée en ce que sa structure comprend deux feuilles élémentaires superposées et une série de diaphragmes intermédiaires continus qui sont parallèles entre eux et réunis aux deux feuilles élémentaires de façon que, lorsque les feuilles élémentaires sont écartées, il se forme une série de chambres juxtaposées mais non intercommunicantes.French patent No. 1,256,507 already discloses a double-walled sheet of thermoplastic material which can be used particularly as a cover for greenhouses, rural buildings and the like, characterized in that its structure comprises two superimposed elementary sheets and a series of continuous intermediate diaphragms which are parallel to each other and joined to the two elementary sheets so that, when the elementary sheets are separated, a series of juxtaposed but not intercommunicating chambers is formed.
De même, on connaît déjà par le brevet français n° 2.073.791 un panneau en matière plastique caractérisé par le fait qu'il comprend deux parois espacées l'une de l'autre, qui sont reliées entre elles par une pluralité de nervures parallèles, espacées les unes des autres, équidistantes et perpendiculaires aux parois.Similarly, we already know from French Patent No. 2,073,791 a plastic panel characterized by the fact that it comprises two walls spaced from one another, which are connected together by a plurality of parallel ribs , spaced from each other, equidistant and perpendicular to the walls.
Ces thermoplastiques extrudés alvéolaires commencent à trouver une large utilisation dans le domaine de la construction. Toutefois, toutes les matières thermoplastiques ont, du fait de la structure ouverte des chaînes moléculaires, l'inconvénient d'une trop grande flexibilité, _ inconvénient particulièrement perceptible si l'on désire les employer en largeur importante entre appuis et en faible épaisseur. Ainsi, dans le domaine de la couverture, une charge de neige de soixante quinze à cent kilos au mètre carré doit être envisagée. Sous cette charge, une flexion de plusieurs centimètres est constatée lorsqu'on emploie des plastiques tels que le polycarbonate, pourtant particulièrement rigide dans sa structure alvéolaire. Or, fréquemment, les bords de ces panneaux reposent sur des profils et les panneaux sous charge ont tendance, en raison de la flexion due à la charge, de s'échapper des profils qui les soutiennent.These extruded cellular thermoplastics are beginning to find wide use in the field of construction. However, all thermoplastics have the disadvantage of too much flexibility due to the open structure of the molecular chains, a disadvantage which is particularly noticeable if it is desired to use them with a large width between supports and with a small thickness. Thus, in the area of roofing, a snow load of seventy five to one hundred kilos per square meter should be considered. Under this load, a bending of several centimeters is observed when using plastics such as polycarbonate, yet particularly rigid in its cellular structure. However, frequently, the edges of these panels rest on profiles and the panels under load tend, due to the bending due to the load, to escape from the profiles which support them.
Par ailleurs, on connaît également par le brevet français n° 1.234.329 des panneaux comprenant un cadre métallique et une gaine de matière plastique. Cette dernière reçoit à chaque extrémité du panneau une soudure électronique pour garder l'étanchéité parfaite. Ainsi, les deux surfaces de la gaine de plastique offrent une couche d'air isolant contre le gel et l'insolation. Toutefois, lorsqu'on occulte par collage ou mastiquage les alvéoles, on emprisonne de l'air qui peut être fortement humide. On risque donc une certaine condensation réduisant le pouvoir isolant, favorisant la pousse des algues et réduisant considérablement la transmission lumineuse dans le cas où l'on utilise une matière transparente.Furthermore, we also know from French Patent No. 1,234,329 panels comprising a metal frame and a plastic sheath. The latter receives at each end of the panel a electronic welding to keep the perfect seal. Thus, the two surfaces of the plastic sheath provide a layer of insulating air against frost and sunstroke. However, when the cells are obscured by gluing or chewing, air is trapped which can be highly humid. There is therefore a risk of some condensation reducing the insulating power, promoting the growth of algae and considerably reducing the light transmission in the case where a transparent material is used.
On connaît déjà par le brevet français n° 1.347.592 un élément de toiture servant de panneau d'éclairement supérieur constitué principalement ou totalement par une matière synthétique transparente, lequel comporte sur ses bords opposés des rebords faisant un certain angle avec la partie principale adjacente et permettant de la poser sur une ouverture de toit à la façon d'un capot, la partie principale étant renforcée non seulement par les bords qui ont la forme de bandes plates mais également par la forme de son profil. L'élément est constitué par deux ou plusieurs plaques en matière synthétique qui sont écartées l'une de l'autre au moins sur la plus grande partie de leur surface et qui sont reliées entre elles au moins sur deux bords opposés.French patent No. 1,347,592 already discloses a roofing element serving as an upper lighting panel consisting mainly or totally of a transparent synthetic material, which has on its opposite edges flanges making an angle with the adjacent main part. and allowing it to be placed on a roof opening in the manner of a hood, the main part being reinforced not only by the edges which have the shape of flat strips but also by the shape of its profile. The element consists of two or more plastic plates which are spaced apart from each other at least over most of their surface and which are connected together at least on two opposite edges.
Toutefois, lorsqu'une charge est disposée sur cet élément de toiture et notamment en cas de neige, il y a écartement des deux bords opposés. Ainsi, cet élément est soumis à un effet de travail en flexion, donc à un effet d'écrasement.However, when a load is placed on this roof element and in particular in the event of snow, there is separation of the two opposite edges. Thus, this element is subjected to a working effect in bending, therefore to a crushing effect.
Par contre, le but de la présente invention est de fournir un élément non pas soumis à un travail de flexion mais à un travail en traction. Les bords opposés ont tendance à se rapprocher, ce qui augmente l'étanchéité entre l'élément en question et la structure métallique.On the other hand, the aim of the present invention is to provide an element which is not subjected to bending work but to working in traction. The opposite edges tend to approach, which increases the seal between the element in question and the metal structure.
De même, on connaît par le brevet français n° 1.510.274 un procédé pour le contrôle d'ensembles à vitrage multiple en ce qui concerne la présence d'une quantité excessive d'humidité enfermée, consistant à empiler de champ, à faible distance les uns des autres, un certain nombre d'ensembles tout-verre à vitrage multiple, à refroidir simultanément à -45°C au moins une partie du bord exposé de chacun de ces ensembles et à éliminer tout ensemble défectueux, décelé par la formation visible d'humidité à son intérieur, au niveau de la partie réfrigérée de son bord. On prévoit dans l'ensemble un orifice pratiqué dans une face ou dans un bord de cet ensemble. A la suite du recuit et du refroidissement, l'ensemble est purgé par l'orifice, par exemple en remplissant la chambre formée entre les feuilles de verre avec de l'air sec ou un gaz, puis le trou est scellé par un quelconque procédé approprié connu dans la technique.Likewise, there is known from French Patent No. 1,510,274 a process for the control of multiple glazing assemblies with regard to the presence of an excessive amount of trapped moisture, consisting of stacking the field, at a short distance from each other, a certain number of all-glass assemblies with multiple glazing, to be cooled simultaneously to -45 ° C at least part of the exposed edge of each of these assemblies and to eliminate any defective assembly, detected by the formation visible humidity inside, at the refrigerated part of its edge. There is generally provided an orifice made in one face or in an edge of this assembly. Following annealing and cooling, the assembly is purged through the orifice, for example by filling the chamber formed between the glass sheets with dry air or a gas, then the hole is sealed by any method. suitable known in the art.
Toutefois, ces ensembles ne sont pas utilisés dans les serres et ne sont pas soumis à un risque de formations d'algues provoquées et facilitées par la présence de buée.However, these assemblies are not used in greenhouses and are not subject to a risk of algae formation caused and facilitated by the presence of fogging.
On connaît également par le brevet suisse n° 533.740 un élément de recouvrement de toiture constitué d'une paroi supérieure et d'une paroi inférieure reliées entre elles par des entretoises. Les rebords de cet élément sont recourbés perpendiculairement au plan du panneau mais ces rebords sont parallèles aux dites entretoises. Donc, ces rebords n'assurent pas l'étanchéité à l'intérieur des alvéoles.Also known from Swiss Patent No. 533,740 is a roof covering element consisting of an upper wall and a lower wall connected together by spacers. The edges of this element are curved perpendicular to the plane of the panel, but these edges are parallel to said spacers. Therefore, these flanges do not seal the interior of the cells.
La présente invention a pour but d'apporter un remède aux différentes difficultés citées ci-dessus. L'invention, telle qu'elle est caractérisée dans la revendication, résout le problème consistant à créer un panneau en matière plastique, en particulier un panneau thermoplastique extrudé alvéolaire utilisé principalement dans les serres dont la 1 résistance à la traction est relativement élevée et de l'ordre de quatre cents à cinq cents kilos au mètre carré et dont la formation de buées peut provoquer la formation d'algues à l'intérieur des alvéoles. Le panneau conçu selon l'invention présente une étanchéité totale réalisée sur les bords latéraux pour éviter toute pénétration de corps ) étrangers et/ou de fluide dans les alvéoles due à un effet d'aspiration de ces alvéoles par suite de la pression ou de la dépression auxquelles est soumis le panneau.The object of the present invention is to provide a remedy to the various difficulties mentioned above. The invention, as characterized in the claim solves the problem of creating a plastic panel, in particular a thermoplastic foamed extrudate panel primarily used in the greenhouses 1 which tensile strength is relatively high and of the order of four hundred to five hundred kilos per square meter and whose formation of fogging can cause the formation of algae inside the alveoli. The panel designed according to the invention has a total seal produced on the lateral edges to prevent any penetration of foreign bodies and / or fluid into the cells due to a suction effect of these cells due to the pressure or the depression to which the panel is subjected.
Dans ce qui suit, l'invention est exposée plus en détail à l'aide de 5 dessins représentant seulement un mode d'exécution.
- La figure 1 est une vue éclatée en perspective d'un panneau conforme à l'invention ; la figure 2 est une vue en perspective de la liaison entre eux de deux panneaux conformes à l'invention ; la figure 3 est une vue en perspective de la liaison entre des panneaux et un profil servant d'appui.
- Figure 1 is an exploded perspective view of a panel according to the invention; Figure 2 is a perspective view of the connection between them of two panels according to the invention; Figure 3 is a perspective view of the connection between panels and a profile serving as support.
On se réfère à la figure 1.We refer to figure 1.
Le panneau en matière plastique 1 est constitué de deux feuilles 2 et 3 séparées par des entretoises parallèles 4, 5. Ce panneau est un panneau thermoplastique extrudé alvéolaire. Les chants transversaux 6, 7, disposés perpendiculairement aux entretoises parallèles 4, 5, comportent une butée 8, 9 perpendiculaire au plan du panneau 1. Ces butées 8, 9 sont obtenues lors du formage du panneau 1.The plastic panel 1 consists of two
Toutefois, avant de réaliser ces butées, on fait circuler de l'air ou tout autre gaz approprié dans les alvéoles 10, 11. Pour éviter tout risque de condensation réduisant le pouvoir isolant, favorisant la pousse des algues et réduisant considérablement la transmission lumineuse, l'air ou le gaz contenu dans les alvéoles est parfaitement sec. A cet effet, l'air ou le gaz insufflé dans les alvéoles est un air ou un gaz soumis préalablement à une dessication. Ainsi, chaque alvéole 10, 11 formée par les feuilles 2, 3, les entretoises parallèles 4, 5 et les butées 8, 9, comportent une poche d'air ou de gaz soumis préalablement à une dessication.However, before making these stops, air or any other suitable gas is circulated in the
On se réfère à la figure 2.We refer to figure 2.
La butée 8, 9, permettant au panneau de travailler en traction et d'utiliser au mieux les performances des thermoplastiques, sert également à réaliser une liaison entre deux panneaux 11, 12. Il suffit que pour le premier panneau Il la butée 81 soit dirigée vers le haut et que la butée 82 du second panneau 1 2 soit dirigée vers le bas.The
Ce principe d'accrochage est également utilisé pour la liaison entre les panneaux 11, 12 et un profil 12. Ce dernier comporte sur ses flancs un rebord recourbé 13, 14 dans lequel vient s'accrocher la butée 81, 82 (voir figure 3).This attachment principle is also used for the connection between the panels 1 1 , 12 and a
Claims (1)
caractérisé en ce qu'il comporte des chants latéraux (6, 7) dont les deux feuilles (2, 3) sont soudées l'une sur l'autre pour faire l'occlusion des alvéoles (10, 11) préalablement soumises à une dessication et pour constituer des butées mécaniques (8, 9) facilitant l'accrochage et conférant au panneau (1) une meilleure tenue mécanique.1. Plastic panel, in particular cellular extruded thermoplastic panel (1) formed by two sheets (2, 3) connected by parallel spacers (4, 5),
characterized in that it comprises lateral edges (6, 7), the two sheets (2, 3) of which are welded to one another to occlude the cells (10, 11) previously subjected to desiccation and to constitute mechanical stops (8, 9) facilitating the attachment and giving the panel (1) better mechanical strength.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7830133 | 1978-10-18 | ||
| FR7830133A FR2439278A1 (en) | 1978-10-18 | 1978-10-18 | PLASTIC PANEL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0010497A1 true EP0010497A1 (en) | 1980-04-30 |
Family
ID=9214065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79400752A Withdrawn EP0010497A1 (en) | 1978-10-18 | 1979-10-16 | Panel of plastics material |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0010497A1 (en) |
| FR (1) | FR2439278A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0058768A1 (en) * | 1981-02-21 | 1982-09-01 | Röhm Gmbh | Profiled connecting element for corrugated slabs |
| FR2850993A1 (en) * | 2003-02-07 | 2004-08-13 | Alcaud Sa | Connecting system for building roofing panels uses retaining pins through panel edges to prevent separation from connecting extrusions |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT8022284V0 (en) * | 1980-07-11 | 1980-07-11 | Europan Di Vitalo Moretti & C | SELF-SUPPORTING GROUP FOR BUILDING BUILDINGS. |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1347592A (en) * | 1963-02-19 | 1963-12-27 | roof element serving as lighting panel | |
| FR1510274A (en) * | 1967-01-06 | 1968-01-19 | Pittsburgh Plate Glass Co | Inspection process for all-glass multi-glazed units |
| CH533740A (en) * | 1971-07-02 | 1973-02-15 | Eberspaecher J | Roof or wall glazing, in particular hyperboloid shell glazing |
-
1978
- 1978-10-18 FR FR7830133A patent/FR2439278A1/en active Granted
-
1979
- 1979-10-16 EP EP79400752A patent/EP0010497A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1347592A (en) * | 1963-02-19 | 1963-12-27 | roof element serving as lighting panel | |
| FR1510274A (en) * | 1967-01-06 | 1968-01-19 | Pittsburgh Plate Glass Co | Inspection process for all-glass multi-glazed units |
| CH533740A (en) * | 1971-07-02 | 1973-02-15 | Eberspaecher J | Roof or wall glazing, in particular hyperboloid shell glazing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0058768A1 (en) * | 1981-02-21 | 1982-09-01 | Röhm Gmbh | Profiled connecting element for corrugated slabs |
| FR2850993A1 (en) * | 2003-02-07 | 2004-08-13 | Alcaud Sa | Connecting system for building roofing panels uses retaining pins through panel edges to prevent separation from connecting extrusions |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2439278A1 (en) | 1980-05-16 |
| FR2439278B1 (en) | 1982-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): BE CH DE GB IT LU NL |
|
| 17P | Request for examination filed | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 19820507 |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LAEDERICH, CHRISTIAN |