EP0964111A1 - Method for constructing panels for roller shutter boxes, a plant for implementing the method, and a panel obtained by the method - Google Patents
Method for constructing panels for roller shutter boxes, a plant for implementing the method, and a panel obtained by the method Download PDFInfo
- Publication number
- EP0964111A1 EP0964111A1 EP99102500A EP99102500A EP0964111A1 EP 0964111 A1 EP0964111 A1 EP 0964111A1 EP 99102500 A EP99102500 A EP 99102500A EP 99102500 A EP99102500 A EP 99102500A EP 0964111 A1 EP0964111 A1 EP 0964111A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- panel
- foam
- shaped strip
- plant
- 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- Withdrawn
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Images
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
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/296—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
- E06B9/11—Roller shutters
- E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
- E06B9/17007—Shutter boxes; Details or component parts thereof
- E06B9/17023—Shutter boxes; Details or component parts thereof made of more than two pieces
Definitions
- This invention relates to a method for constructing panels for roll shutter boxed, a plant for implementing the method, and a panel obtained by the method.
- Boxes for roll shutters of slatted type are well known. They were formerly of wooden construction but are now constructed of bent and seam-jointed sheet metal or extruded aluminium, or are in the form of panels of extruded plastics construction coupled together.
- An object of the invention is to provide a panel for roll shutter boxes which has the same characteristics as internally lined metal panels but which can be constructed more easily and at lower cost.
- a further object of the invention is to provide a panel having good dimensional stability and resistance to deformation, compared with plastics panels.
- a plant for implementing the method is claimed in claim 5.
- a panel obtained by the method is claimed in claim 8.
- the method for constructing panels according to the invention involves the use of a plant comprising substantially a reel 2 from which a metal strip 4 having a thickness of 0.25-.0.7 mm and preferably 0.32-0.4 mm is unwound and which is positioned upstream of a forming machine 6, at the exit of which a polyurethane foam injection station 8 is provided.
- a reel 10 Downstream of said station 8 there are provided a reel 10 from which aluminium or plastic film 14 is unwound, and a shaping unit 14.
- the film thickness is a few hundredths of a mm in the case of aluminium film, or a few tenths of a mm in the case of plastic film.
- Said unit 14 consists of two overlying belt conveyors 16, 18, with the lower conveyor 16 having a flat surface to support and advance the shaped strip and the upper conveyor 18 having its outer surface shaped to conform to the shape to be given to the foam in its unhardened state.
- said shaped surface is obtained by applying shim portions 19.
- the metal strip 4 is unwound from the reel 2 and is passed through the forming machine in which it is shaped to the desired form.
- the shaped strip obtained has its edges bent to C-shape and slightly diverging outwards.
- Polyurethane foam 21 is then injected into the shaped strip, the film 12 from the reel 10 then being laid on the foam, to rest on the edges 25.
- the shaped strip is then advanced into the shaping unit, which adheres perfectly to the strip, and in which the upper conveyor 18 not only gives the required shape to the foam by means of the shims 19, but also, via the interposed film, closes the longitudinal compartment intended for the expanding foam.
- the shaped strip is then fed to the polymerization tunnel 20 where the foam hardens, after which the shaped strip is cut to obtain the panel 24 of the desired length.
- Figure 4 represents a roll shutter box obtained from the panels illustrated in Figures 2 and 3, in which it can be seen that they are connected together by inserting an appendix 26 of the "male” panel into a seat 29 of the "female” panel, with a seal gasket 30 therebetween.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
A method for constructing roll shutter box panels, comprising the
following steps:
- forming a metal strip to obtain a continuous shaped strip (6).
- injecting a polyurethane foam into the shaped strip (8),
- applying a deformable film (12) onto said foam,
- deforming said foam in accordance with a defined contour (14),
- polymerizing the foam until it hardens (20), and
- cutting the shaped strip to obtain a panel of desired dimensions (22).
Description
- This invention relates to a method for constructing panels for roll shutter boxed, a plant for implementing the method, and a panel obtained by the method.
- Boxes for roll shutters of slatted type are well known. They were formerly of wooden construction but are now constructed of bent and seam-jointed sheet metal or extruded aluminium, or are in the form of panels of extruded plastics construction coupled together.
- It also been proposed to construct such boxes from panels each constructed from two metal sheets between which a layer of expanded material is interposed, said panels being joined together along their contacting edges.
- An object of the invention is to provide a panel for roll shutter boxes which has the same characteristics as internally lined metal panels but which can be constructed more easily and at lower cost.
- A further object of the invention is to provide a panel having good dimensional stability and resistance to deformation, compared with plastics panels.
- These and further characteristics which will be apparent from the ensuing description are attained according to the invention by a method for constructing panels for roll shutter boxes as claimed in claim 1.
- A plant for implementing the method is claimed in claim 5.
- A panel obtained by the method is claimed in
claim 8. - A preferred embodiment of the invention is described in greater detail hereinafter with reference to the accompanying drawing, on which:
- Figure 1
- is a schematic view of a plant for implementing the method of the invention;
- Figure 2
- shows a "male" first panel obtained by the method, for forming roll shutter boxes;
- Figure 3
- shows a "female" second panel; and
- Figure 4
- shows a roll shutter box constructed from the panels.
- As can be seen from the figures, the method for constructing panels according to the invention involves the use of a plant comprising substantially a
reel 2 from which a metal strip 4 having a thickness of 0.25-.0.7 mm and preferably 0.32-0.4 mm is unwound and which is positioned upstream of a formingmachine 6, at the exit of which a polyurethanefoam injection station 8 is provided. - Downstream of said
station 8 there are provided areel 10 from which aluminium orplastic film 14 is unwound, and ashaping unit 14. The film thickness is a few hundredths of a mm in the case of aluminium film, or a few tenths of a mm in the case of plastic film. - Said
unit 14 consists of twooverlying belt conveyors lower conveyor 16 having a flat surface to support and advance the shaped strip and theupper conveyor 18 having its outer surface shaped to conform to the shape to be given to the foam in its unhardened state. - In particular said shaped surface is obtained by applying
shim portions 19. - At the conveyor exit there is a
polymerization tunnel 20, with acutter 22 provided at its exit. - According to the method of the invention the metal strip 4 is unwound from the
reel 2 and is passed through the forming machine in which it is shaped to the desired form. In particular, the shaped strip obtained has its edges bent to C-shape and slightly diverging outwards. -
Polyurethane foam 21 is then injected into the shaped strip, thefilm 12 from thereel 10 then being laid on the foam, to rest on theedges 25. - The shaped strip is then advanced into the shaping unit, which adheres perfectly to the strip, and in which the
upper conveyor 18 not only gives the required shape to the foam by means of theshims 19, but also, via the interposed film, closes the longitudinal compartment intended for the expanding foam. - The shaped strip is then fed to the
polymerization tunnel 20 where the foam hardens, after which the shaped strip is cut to obtain thepanel 24 of the desired length. - Figure 4 represents a roll shutter box obtained from the panels illustrated in Figures 2 and 3, in which it can be seen that they are connected together by inserting an
appendix 26 of the "male" panel into aseat 29 of the "female" panel, with aseal gasket 30 therebetween. - From the aforegoing it is apparent that the method of the invention has numerous advantages, and in particular:
- it enables panels to be obtained in a simpler manner,
- the plant cost is lower due to the elimination of the operations required to connect the shaped strips together, as is the finished product cost due to the reduction in the polyurethane quantity,
- it enables roll shutter boxes of lighter weight to be constructed by virtue of the lesser weight of their component shaped strips,
- it has good torsional rigidity due to the presence of the film, if of aluminium,
- the shaped strip can be used for other purposes such as false ceilings or insulating facings, because of the good finish of the product obtained.
Claims (11)
- A method for constructing roll shutter box panels, comprising the following steps:forming a metal strip to obtain a continuous shaped strip,injecting a polyurethane foam into the shaped strip,applying a deformable film onto said foam,deforming said foam in accordance with a defined contour,polymerizing the foam until it hardens, andcutting the shaped strip to obtain a panel of desired dimensions.
- A method as claimed in claim 1, characterised by deforming the film during the expansion of the polyurethane foam.
- A method as claimed in claim 1, characterised by applying a deformable aluminium film.
- A method as claimed in claim 1, characterised by applying a deformable plastic film.
- A plant for implementing the method claimed in claims 1 to 4, characterised by comprising:a unit (6) for forming a metal strip (4) to obtain a shaped strip with bent edges,a unit (8) for injecting polyurethane foam into the shaped strip,a unit (10) for unwinding a flexible film (12) onto the cavity of the product,a unit (14) for pressing the surface covered by the film,a polymerization station (20) for the polyurethane foam,a cutting station (22).
- A plant as claimed in claim 5, characterised in that the pressing unit is formed from two overlying parallel conveyors (16,18) for advancing the shaped strip.
- A plant as claimed in claim 5, characterised in that that conveyor facing the flexible film is provided with a plurality of shaped pieces (19).
- A panel obtained by the method claimed in one or more of claims 1 to 4, characterised by being constructed of a metal sheet (4) and a sheet (12) of deformable film, between these latter there being interposed a layer of expanded material (21).
- A panel as claimed in claim 8, characterised in that the deformable film is of aluminium.
- A panel as claimed in claim 8, characterised in that the deformable film is of plastics material.
- A panel as claimed in claim 8, characterised by having C-bent edges.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVE980026 IT1306471B1 (en) | 1998-06-10 | 1998-06-10 | PROCEDURE FOR MAKING PANELS FOR BOXES FOR ROLLING SHUTTERS AND PANEL OBTAINED WITH THE PROCEDURE. |
ITVE980026 | 1998-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0964111A1 true EP0964111A1 (en) | 1999-12-15 |
Family
ID=11424375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99102500A Withdrawn EP0964111A1 (en) | 1998-06-10 | 1999-02-10 | Method for constructing panels for roller shutter boxes, a plant for implementing the method, and a panel obtained by the method |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0964111A1 (en) |
IT (1) | IT1306471B1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2307724B1 (en) * | 1973-02-16 | 1974-03-14 | Prix Wiehofsky & Drexl | Method and device for manufacturing a roller shutter box |
EP0137133A2 (en) * | 1983-10-10 | 1985-04-17 | ALUKON F. Grashei KG | Roller blind housing |
EP0265881A2 (en) * | 1986-10-28 | 1988-05-04 | Adolf Imhoff | Building panel |
GB2227449A (en) * | 1989-02-17 | 1990-08-01 | Kingspan Res & Dev Ltd | Manufacturing a rigid foam board |
-
1998
- 1998-06-10 IT ITVE980026 patent/IT1306471B1/en active
-
1999
- 1999-02-10 EP EP99102500A patent/EP0964111A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2307724B1 (en) * | 1973-02-16 | 1974-03-14 | Prix Wiehofsky & Drexl | Method and device for manufacturing a roller shutter box |
EP0137133A2 (en) * | 1983-10-10 | 1985-04-17 | ALUKON F. Grashei KG | Roller blind housing |
EP0265881A2 (en) * | 1986-10-28 | 1988-05-04 | Adolf Imhoff | Building panel |
GB2227449A (en) * | 1989-02-17 | 1990-08-01 | Kingspan Res & Dev Ltd | Manufacturing a rigid foam board |
Also Published As
Publication number | Publication date |
---|---|
IT1306471B1 (en) | 2001-06-11 |
ITVE980026A1 (en) | 1999-12-10 |
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