EP1092808A1 - Module pour absorption de son, écran ou paroi pour absorption de son et methode de fabrication du module - Google Patents

Module pour absorption de son, écran ou paroi pour absorption de son et methode de fabrication du module Download PDF

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Publication number
EP1092808A1
EP1092808A1 EP00203499A EP00203499A EP1092808A1 EP 1092808 A1 EP1092808 A1 EP 1092808A1 EP 00203499 A EP00203499 A EP 00203499A EP 00203499 A EP00203499 A EP 00203499A EP 1092808 A1 EP1092808 A1 EP 1092808A1
Authority
EP
European Patent Office
Prior art keywords
sound
absorbing
module
frame
casing
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.)
Granted
Application number
EP00203499A
Other languages
German (de)
English (en)
Other versions
EP1092808B1 (fr
Inventor
Peter Paul Jansen
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.)
JANSEN KUNSTSTOFFEN B.V.
Original Assignee
Jansen Kunststoffen BV
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 Jansen Kunststoffen BV filed Critical Jansen Kunststoffen BV
Publication of EP1092808A1 publication Critical patent/EP1092808A1/fr
Application granted granted Critical
Publication of EP1092808B1 publication Critical patent/EP1092808B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
    • E01F8/0064—Perforated plate or mesh, e.g. as wall facing
    • E01F8/007—Perforated plate or mesh, e.g. as wall facing with damping material

Definitions

  • the present invention relates to a sound-absorbing module, comprising a sound-absorbing material which is framed by a frame of sheet material, wherein a protective plastic casing is arranged round the frame.
  • noise nuisance noise barriers are being placed to an increasing extent, for instance along motorways and railway lines.
  • the known noise barriers can be divided into sound-reflecting and sound-absorbing screens.
  • the choice of the combination of sheet material and plastic in the sound-absorbing module according to the invention has a number of significant advantages.
  • the framing by means of sheet material gives the module sufficient strength and load bearing capacity to be able to withstand, without deformation, the force of the modules lying above in the stack.
  • the choice of a frame of sheet material with an additional casing of plastic gives the module a low weight, which is advantageous for instance during transport and placing of the module.
  • the plastic With a suitable choice of the plastic, which can optionally undergo a number of additional treatments, the plastic can moreover be made fire-retardant and dirt-repellent.
  • the casing comprises two generally U-shaped parts. These parts preferably cover the front and rear side of the module. There is consequently a minimal overlap between the sheet material and the plastic, which results in material-saving and therefore cost reduction and weight reduction.
  • the parts are preferably welded to each other.
  • the casing is provided with a profiling which substantially takes up expansion of the module in longitudinal direction.
  • the profiling preferably comprises a number of ribs running at some mutual distance from each other. In the case of placing outside, the expansion resulting from weather conditions can only lead to a minimal bulge between two adjacent ribs.
  • the ribs run substantially vertically.
  • the ribs run obliquely.
  • the second variant has the advantage that it takes up the expansion in both height direction and longitudinal direction.
  • the casing is provided on at least one side thereof with a number of openings.
  • the plastic is polypropylene (PP) or polyethylene (PE), for instance of high density.
  • PP polypropylene
  • PE polyethylene
  • the frame comprises a number of U-shaped profiles.
  • a module form is chosen with straight surfaces as peripheral edges, as in the common rectangular module form, these are eminently suitable to form a frame for the sound-absorbing material.
  • the U-shaped profiles preferably overlap each other partly in pairs and are fixed to each other by means of fixing means at the position of the overlapping parts in order to form a continuous frame.
  • the number of fixing points which also form sound contact points, is hereby limited in advantageous manner to a minimum, as a result of which the acoustic insulating value of the module improves.
  • An example of particularly suitable fixing means are pop rivets.
  • the sound-absorbing material is mineral wool, for instance rock wool. This material readily allows manufacture to size in a desired, for instance rectangular form, and is also known for its good sound-insulating properties.
  • the present invention also relates to a sound-absorbing screen or a sound-absorbing wall formed from a number of mutually stacked sound-absorbing modules according to the invention.
  • the present invention further relates to a method for manufacturing a sound-absorbing module according to the invention, which method comprises the steps of:
  • step 1) comprises the steps of:
  • the method according to the invention comprises the steps of:
  • the casing is for this purpose first heated locally sufficiently to enable pressing of a number of ribs at some mutual distance into the plastic.
  • the surface of the plastic is preferably heated locally for a time to a temperature of approximately 80 to 110 C.
  • the method comprises the further step of arranging a number of openings on at least one side of the casing to allow passage of sound waves This can take place for instance by means of perforating techniques.
  • Figure 1 shows in schematic view a sound-absorbing screen 1 according to the invention.
  • Screen 1 is constructed from a number of sound-absorbing modules 2 according to the invention stacked onto each other.
  • Modules 2 have a generally rectangular form and are clamped on either side between posts 3 with an H-shaped profile.
  • FIG. 2 shows frame 4 of a sound-absorbing module 2 according to the invention.
  • Frame 4 is constructed from a number of U-shaped longitudinal beams 5 running parallel to each other at some mutual distance.
  • Longitudinal beams 5 are mutually connected by means of U-shaped cross beams or uprights 6, which likewise run parallel to each other at some mutual distance.
  • Frame 4 forms a continuous frame for receiving sound-absorbing material 9 (see figure 3).
  • frame 4 consists of five mutually separated compartments, each forming a frame for a piece of sound-absorbing material.
  • the U-shaped beams or profiles are partly overlapping and mutually connected on the overlapping parts by means of fixing means 7
  • fixing means 7 are pop rivets 7.
  • frame 4 can optionally be provided with strengthening elements 8.
  • frame 4 One of the characteristic aspects of frame 4 is that the front side and the rear side thereof are largely open.
  • the frame therefore comprises relatively little sheet material.
  • An example of a suitable sheet material is galvanized steel.
  • FIG 3 shows a module 2 according to the invention in partly cut-away view.
  • Rock wool 9 which serves as sound-absorbing material, is arranged inside the frame formed by longitudinal beams 5 and cross beams 6
  • this consists of two rectangular mats 9 which are mutually separated by a plate 15, for instance of plastic.
  • Rock wool 9 is protected in per se known manner by means of glass fibre 10 in order to protect it against dirt and damage by animals, such as insects or birds.
  • a plastic casing consisting of plates 11A and 11B, both with a generally U-shaped profile.
  • the plastic plates connect together and are fixed to each another by means of a welded seam 12.
  • the plates 11A and 11B cover the top side and bottom side at the position of longitudinal beams 5 as well as the front and rear side of the module. There is no casing at the position of cross beam 6.
  • plastics are polypropylene (PP) or polyethylene (PE), preferably of high density. If desired, the plastic can be further subjected to diverse treatments, for instance to make it dirt-repellent and/or fire-retardant.
  • a profiling is arranged in casing 11A and 11B in the form of ribs 13 arranged at some mutual distance.
  • Part 11A is perforated to create openings 14 for passage of sound waves.
  • part 11B is also perforated.
  • the sound-absorbing module can be manufactured as follows according to the invention.
  • a frame is formed by fixing a number of generally U-shaped profiles of sheet material continuously to each other. This is carried out for instance by positioning these profiles in partly overlapping pairs and then connecting them at the position of the overlapping parts by means of fixing means, such as pop rivets.
  • the frame serves as frame for a sound-absorbing material which is received therein.
  • the frame is for the greater part open on the front and rear side.
  • the sound-absorbing material is preferably mineral wool, such as rock wool, one or two plates of which are made to size and inserted in the frame.
  • the frame can be constructed for this purpose around the rock wool plates. It will however be apparent that many other suitable sound-absorbing materials can be applied in the module according to the invention. The choice for a particular type of material will have some influence on the performing of the method. An example of a suitable alternative is possible injection into the module.
  • protecting means arranged, for instance in the form of sheets of glass fibre or any other type of suitable material
  • a protective plastic casing is then arranged round the frame.
  • This is preferably manufactured from two substantially identical parts with a generally U-shaped profile. The parts are locally heated sufficiently to enable pressing of ribs therein at some mutual distance. A surface heating is preferably applied at the position of each intended rib.
  • HDPE high density polyethylene
  • One or both parts are also perforated in order to create openings 14 for passage of sound waves.
  • a suitable connection method is welding with a suitable welding material, for instance the same plastic or a material related thereto or at least compatible therewith.
  • the welding can be performed extremely well using the welding device as described in the non pre-published patent application 1010957 of applicant.
  • the module according to the invention is generally suitable for applications in noise barrier structures, for both inside and outside.
  • the module can for instance serve as component of a sound-absorbing screen for outside applications, such as along motorways or railway lines or at other locations where noise nuisance can occur, such as construction sites.
  • the module is also suitable for application as component of a sound-absorbing wall in a building, for instance a system wall. Due to its light weight the module is also extremely useful in temporary facilities. It is on the other hand sufficiently sturdy to guarantee a long lifespan.
  • the module can take many different forms in addition to the rectangular form shown in the present patent application.
  • the method according to the invention limited in respect of shape, in the sense that for a skilled person in the field it is universally applicable in the manufacture of the module in other forms, such as square, triangular and so on.
  • the peripheral edges of the chosen form are preferably straight for the purpose of the desired stacked placing. However, this is not absolutely essential either.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP00203499A 1999-10-15 2000-10-09 Module pour absorption de son, écran ou paroi pour absorption de son et methode de fabrication du module Expired - Lifetime EP1092808B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1013311A NL1013311C2 (nl) 1999-10-15 1999-10-15 Geluidabsorberende module, geluidabsorberend scherm of wand en werkwijze voor de vervaardiging van de geluidabsorberende module.
NL1013311 1999-10-15

Publications (2)

Publication Number Publication Date
EP1092808A1 true EP1092808A1 (fr) 2001-04-18
EP1092808B1 EP1092808B1 (fr) 2005-06-22

Family

ID=19770064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00203499A Expired - Lifetime EP1092808B1 (fr) 1999-10-15 2000-10-09 Module pour absorption de son, écran ou paroi pour absorption de son et methode de fabrication du module

Country Status (4)

Country Link
EP (1) EP1092808B1 (fr)
AT (1) ATE298382T1 (fr)
DE (1) DE60020923D1 (fr)
NL (1) NL1013311C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1028409C2 (nl) * 2005-02-25 2006-08-29 Altena Services B V Geluiddempende coulisse, samenstel van dergelijke coulissen, en luchtbehandelingskast voorzien van een dergelijke coulisse.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1946561A1 (de) * 1969-09-13 1971-04-15 Guenther Gubela Bauelement aus Kunststoff fuer Laermschutzzaeune
EP0335321A1 (fr) * 1988-03-28 1989-10-04 Rodman W. Kotter Système de panneaux de couverture architectonique adaptable
WO1990008238A1 (fr) * 1989-01-11 1990-07-26 Peter Vetterli Paroi insonore
EP0560200A2 (fr) * 1992-03-10 1993-09-15 Lino Cardin Ecran anti-bruit
EP0728877A1 (fr) * 1995-02-23 1996-08-28 Screg Elément d'isolation acoustique, et paroi anti-bruit réalisée à partir de tels éléments
EP0744496A1 (fr) * 1995-05-22 1996-11-27 TUBOSIDER ITALIANA S.p.A. Réducteur du bruit pour mur anti-bruit routier
GB2305451A (en) * 1995-09-21 1997-04-09 Kennedy Lionweld Ltd Noise barrier sytem
WO1998000607A1 (fr) * 1996-06-28 1998-01-08 Rockwool International A/S Mur ou ecran d'absorption et/ou de reduction du bruit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1946561A1 (de) * 1969-09-13 1971-04-15 Guenther Gubela Bauelement aus Kunststoff fuer Laermschutzzaeune
EP0335321A1 (fr) * 1988-03-28 1989-10-04 Rodman W. Kotter Système de panneaux de couverture architectonique adaptable
WO1990008238A1 (fr) * 1989-01-11 1990-07-26 Peter Vetterli Paroi insonore
EP0560200A2 (fr) * 1992-03-10 1993-09-15 Lino Cardin Ecran anti-bruit
EP0728877A1 (fr) * 1995-02-23 1996-08-28 Screg Elément d'isolation acoustique, et paroi anti-bruit réalisée à partir de tels éléments
EP0744496A1 (fr) * 1995-05-22 1996-11-27 TUBOSIDER ITALIANA S.p.A. Réducteur du bruit pour mur anti-bruit routier
GB2305451A (en) * 1995-09-21 1997-04-09 Kennedy Lionweld Ltd Noise barrier sytem
WO1998000607A1 (fr) * 1996-06-28 1998-01-08 Rockwool International A/S Mur ou ecran d'absorption et/ou de reduction du bruit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1028409C2 (nl) * 2005-02-25 2006-08-29 Altena Services B V Geluiddempende coulisse, samenstel van dergelijke coulissen, en luchtbehandelingskast voorzien van een dergelijke coulisse.

Also Published As

Publication number Publication date
NL1013311C2 (nl) 2001-04-18
DE60020923D1 (de) 2005-07-28
ATE298382T1 (de) 2005-07-15
EP1092808B1 (fr) 2005-06-22

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