JPS6310258B2 - - Google Patents
Info
- Publication number
- JPS6310258B2 JPS6310258B2 JP55000264A JP26480A JPS6310258B2 JP S6310258 B2 JPS6310258 B2 JP S6310258B2 JP 55000264 A JP55000264 A JP 55000264A JP 26480 A JP26480 A JP 26480A JP S6310258 B2 JPS6310258 B2 JP S6310258B2
- Authority
- JP
- Japan
- Prior art keywords
- foil
- sheet material
- sheet
- sound
- perforated
- 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
Links
- 239000011888 foil Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 31
- 229920003023 plastic Polymers 0.000 claims abstract description 12
- 239000004033 plastic Substances 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 239000011358 absorbing material Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 7
- 239000003292 glue Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000011490 mineral wool Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000015220 hamburgers Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
- E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/8409—Sound-absorbing elements sheet-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- External Artificial Organs (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Golf Clubs (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、吸音材に関し、さらに詳しくは薄い
孔明き金属シート材とこのシート材の一側に固着
した好ましくは厚さ約10〜50μのプラスチツク箔
体とからなる吸音材に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sound-absorbing material, and more particularly to a sound-absorbing material comprising a thin perforated metal sheet and a plastic foil, preferably about 10 to 50 microns thick, fixed to one side of the sheet. It is related to materials.
デンマーク特許第128947号明細書には薄い孔明
きシート材料からなる部材と、これらの部材内に
配置した鉱物綿からなる芯綿のごとき吸収材料
と、シート材料と吸収材料との間に挿入した空気
および粒子遮断箔体とからなり、該箔体を２組の
交差する連続糊縞からなる十字状パターンでシー
ト材料に付着させてなる吸音天井ライニングが開
示されている。この明細書では箔体が好ましくは
厚さが約10μまたはそれ以下のプラスチツク箔体
でありそしてこの箔体がシート材料の上側に一種
の碁盤縞状被覆を形成し、糊縞が該箔体を通常１
または数センチメートルの多数の略長方形（正方
形にもできる）部分に分割することを述べてい
る。この記載の目的とするところはシート材料の
上側に沿う空気の流れを阻止しかつそれによつて
吸音効果を特に高周波域において実質的に減少す
ることなく、気密箔体を孔明きシート材料に糊付
した場合と同様に孔明きシート材料を通る空気の
循環を妨げるということにある。 Danish Patent No. 128947 describes a member made of a thin perforated sheet material, an absorbent material such as a batting made of mineral wool disposed within these members, and air inserted between the sheet material and the absorbent material. and a particle-blocking foil, the foil being adhered to a sheet material in a criss-cross pattern of two sets of intersecting continuous glue stripes. In this specification, the foil is preferably a plastic foil having a thickness of about 10 microns or less, and this foil forms a kind of checkered coating on the upper side of the sheet material, with the glue stripes covering the foil. Normal 1
Or, it states that it is divided into many approximately rectangular (or square) parts several centimeters in size. The purpose of this description is to glue an airtight foil to a perforated sheet material without blocking the flow of air along the upper side of the sheet material and thereby substantially reducing the sound absorption effect, especially in the high frequency range. The problem is that it prevents air circulation through the perforated sheet material.
公知の天井ライニングは、実際に使用したと
き、どの場合においても吸音効果に関して期待通
りにならないことが解つた。したがつて、プラス
チツク箔体はある場合には鉱物綿がその厚さに関
係なく殆んど無能になる範囲まで鉱物綿の吸音容
量に関する減少効果を持つことが解つた。さらに
この減少効果はプラスチツク箔体の物理的特性、
とくにその配合、溶融点、厚さおよび厚さの変化
によつて実質的に変化しかつこれらの要因は１つ
のおよび同一のプラスチツク箔体ロールにおいて
も減少効果に強い影響を及ぼすような範囲にまで
変化するということが解つた。さらに糊縞は、厚
さおよび幅を十分な精度で制御することが無難し
くかつ箔体とシート材料との間に直接接触するこ
とにより糊縞の面積に比例して有効吸収面積を減
ずるように求められねばならないため、重要な要
因を構成する。 It has been found that the known ceiling linings, when used in practice, do not in any case fulfill the expected sound absorption effect. It has therefore been found that the plastic foil has a reducing effect on the sound absorption capacity of the mineral wool in some cases to the extent that it becomes almost ineffective regardless of its thickness. Furthermore, this reduction effect is due to the physical properties of the plastic foil.
In particular, their formulation, melting point, thickness and thickness variations vary substantially and these factors are to such an extent that they strongly influence the reduction effect even in one and the same plastic foil roll. I understand that things change. Furthermore, the glue stripes are difficult to control in thickness and width with sufficient precision and the direct contact between the foil and the sheet material reduces the effective absorption area in proportion to the area of the glue stripes. Since it must be sought, it constitutes an important factor.
上記公知の技術から発して、本発明の目的は同
様に孔明きシートと箔体で構成するが実用状態で
は適切に制御することができる吸音容量をもつ吸
音材構造を提供することにある。 Starting from the above-mentioned known technology, the object of the present invention is to provide a sound-absorbing material structure which likewise consists of perforated sheets and foils, but which has a sound-absorbing capacity that can be suitably controlled in practical conditions.
さらに詳しく云えば、本発明はアルミニウムシ
ートのごとき薄い孔明きシート材料と該シート材
料の一側に固着した好ましくは厚さ約10〜50μの
プラスチツク箔体から通常の方法で構成する吸音
材に関するものである。本発明による構造は、固
着点間に箔体を吸音に関して最適な距離シート材
料から離して置くことにより同じ型の公知のもの
とは異なつている。これは実際にはシート材料と
箔体との間に糊付けまたは溶接によつてシート材
料ならびに箔体に添着されかつ１〜５mm程度の大
きさの網目を有する網体を挿入することにより都
合よく達成することができる。 More particularly, the present invention relates to a sound absorbing material constructed in the conventional manner from a thin perforated sheet material, such as an aluminum sheet, and a plastic foil, preferably about 10 to 50 microns thick, affixed to one side of the sheet material. It is. The construction according to the invention differs from known versions of the same type by placing the foil between the fastening points at a distance from the sheet material that is optimal with respect to sound absorption. This is conveniently achieved in practice by inserting between the sheet material and the foil a mesh which is affixed to the sheet material and the foil by gluing or welding and has a mesh size of the order of 1 to 5 mm. can do.
広汎な実験および理論的分析にもかかわらず、
箔体とシート材料との間の距離が吸音容量に対し
て決定的な重要性を持つのは何故かという理由の
明確な説明を見出すことはできなかつたが、本発
明による構造においては孔明きシート材料、空気
充満凹所および箔体間に十分な吸音をいかなる鉱
物綿または他の多孔性材料の使用もなしに達する
ことができる相互作用があることが解つた。これ
は、いうまでもなく、経済的観点だけでなくかか
る材料は塵埃の問題を生じやすいので環境度につ
いても多大な利点がある。 Despite extensive experimental and theoretical analysis,
Although we could not find a clear explanation of why the distance between the foil and the sheet material is of decisive importance for the sound absorption capacity, in the structure according to the invention the perforated sheet It has been found that there is an interaction between the materials, the air-filled recesses and the foil that allows sufficient sound absorption to be achieved without the use of any mineral wool or other porous materials. This, of course, has great advantages not only from an economic point of view, but also from an environmental point of view, since such materials are prone to dust problems.
吸音効果は、いずれにせよ大部分、箔体が独立
してかつ孔明きシート材料の振動により遅れて揺
動または振動する多数の小面積または小ダイアフ
ラムに分割されるということによることが確立さ
れるとみなすことができる。さらに蓋然的な説明
は箔体とシート材料との間にシート材料の孔によ
つて得られる空気充満層室からなる層が設けられ
るということにあると言うことができる。これら
の個々の室は消音効果を有している。また鉱物綿
によつて一般的に得られる凹所吸収は同様に本発
明によつて得られ、その結果この効果に対する追
加的測定は最小に減じられることが確立された。
上記したような網体を使用するとき、ダイアフラ
ムまたは室は適当な形状、例えば二次または六角
形状が与えられるが、これはガラスフアイバーガ
ーゼのごときガーゼ状材料が一定の網目をもつ網
体に代つて適当であるから重要性は少ない。 It is established that the sound absorption effect is in any case largely due to the fact that the foil is divided into a large number of small areas or small diaphragms that rock or vibrate independently and with a delay due to the vibrations of the perforated sheet material. It can be considered as A more likely explanation may be that between the foil and the sheet material there is provided a layer consisting of air-filled chambers obtained by holes in the sheet material. These individual chambers have a sound deadening effect. It has also been established that the recessed absorption commonly obtained with mineral wool is likewise obtained according to the invention, so that additional measurements for this effect are reduced to a minimum.
When using a mesh as described above, the diaphragm or chamber is given a suitable shape, e.g. quadratic or hexagonal, but this is because a gauze-like material such as glass fiber burger can be substituted for the mesh with a constant mesh. Since it is appropriate, it is of little importance.
本発明による吸音構造の重要な利点は適用した
箔体の予期しない変化、とくに厚さおよび配合の
変化が完成構造の吸音容量について事実上重要で
はないということである。前記容量は、他方にお
いて、必要ならばいく分広い範囲で、とくにシー
ト材料の厚さおよび孔明け比、箔体および網体の
厚さ、および網目の大きさおよび形状を変化する
ことにより変化することができる。これは、例え
ば条件に合つた吸央についての条件に合すため
に、特別な吸音特性を有する構造の経済的製造を
可能にする。 An important advantage of the sound absorbing structure according to the invention is that unforeseen changes in the applied foil, especially changes in thickness and formulation, are virtually unimportant for the sound absorbing capacity of the finished structure. Said capacity, on the other hand, can be varied, if necessary, within a somewhat wide range, in particular by varying the thickness and perforation ratio of the sheet material, the thickness of the foils and meshes, and the size and shape of the meshes. be able to. This allows the economical manufacture of structures with special sound absorption properties, for example to meet the requirements for a tailored absorption center.
またシート材料と箔体との間の所望の距離は、
網体が箔体の一部を形成するかまたは箔体およ
び／またはシート材料が所定の間隔を確実にする
ような低いリブまたは突起を設けることもできる
ように、両部材間に網体等を挿入する以外の他の
方法でも確実にすることができる。 Also, the desired distance between the sheet material and the foil is
A screen or the like can be provided between the two parts so that the screen forms part of the foil or the foil and/or sheet material can also be provided with low ribs or protrusions to ensure a certain spacing. This can be ensured by other methods than insertion.
添付図面には吸音構造の好適な実施例を示す。 The accompanying drawings show preferred embodiments of the sound absorbing structure.
図示実施例においてその構造は鋼またはアルミ
ニウムの矩形シートからなり、この矩形シートは
一対の対向端部分３，３を孔なしにして置くよう
に平行線２，２間で孔明けされている。 In the illustrated embodiment, the structure consists of a rectangular sheet of steel or aluminum, which is perforated between parallel lines 2, 2 so as to leave a pair of opposite end portions 3, 3 unperforated.
例えば厚さが25μでその下面に網体５を設けた
プラスチツク箔体またはフイルム４は金属シート
１の孔を開けた区域を被覆しかつ線６，６で示す
ように該区域をわずかに越えて延びている。網体
５はプラスチツク箔体４および金属シート１双方
に接着されかつそれらの間にプラスチツク箔体ま
たはフイルムで閉じられるが金属シート１の孔を
通して囲繞空気と連通する空気充満室層を形成す
る。 A plastic foil or film 4, for example 25μ thick and provided with a mesh 5 on its underside, covers the perforated area of the metal sheet 1 and extends slightly beyond the area as indicated by lines 6,6. It is extending. The mesh 5 is glued to both the plastic foil 4 and the metal sheet 1 and is closed with a plastic foil or film between them, forming an air-filled chamber layer that communicates with the surrounding air through the holes in the metal sheet 1.
図は本発明の好適な実施例を示す説明図であ
る。
図中符号：１……金属シート、４……プラスチ
ツク箔体、５……網。
The figure is an explanatory diagram showing a preferred embodiment of the present invention. Codes in the figure: 1...Metal sheet, 4...Plastic foil, 5...Net.
Claims (1)
の開いたシート材料と、前記シートの一側に固着
された、好ましくは厚さ約10〜50μのプラスチツ
ク箔体とからなり、その固着点間に前記箔体を吸
音に関して最適な距離前記シート材料から離して
置くことを特徴とする吸音材。 ２ 前記シート材料と前記箔体との間には網体を
糊付けまたは溶接によりそれらに添着し、前記網
体は１〜５mm程度の大きさの網目を有しているこ
とを特徴とする特許請求の範囲第１項記載の吸音
材。[Scope of Claims] 1. Consisting of a thin perforated sheet material, such as an aluminum or steel sheet, and a plastic foil, preferably about 10 to 50 microns thick, fixed to one side of the sheet, the fixing A sound absorbing material, characterized in that between points the foil is placed at an optimum distance for sound absorption from the sheet material. 2. A patent claim characterized in that a net is attached between the sheet material and the foil by gluing or welding, and the net has a mesh size of about 1 to 5 mm. The sound absorbing material according to the range 1 above.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK4379A DK4379A (en) | 1979-01-04 | 1979-01-04 | SOUND ABSORPTION UNIT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5592446A JPS5592446A (en) | 1980-07-12 |
| JPS6310258B2 true JPS6310258B2 (en) | 1988-03-04 |
Family
ID=8089085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26480A Granted JPS5592446A (en) | 1979-01-04 | 1980-01-04 | Sound absorbing material |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0013513B1 (en) |
| JP (1) | JPS5592446A (en) |
| AT (1) | ATE9017T1 (en) |
| AU (1) | AU533557B2 (en) |
| DE (1) | DE2967185D1 (en) |
| DK (1) | DK4379A (en) |
| EG (1) | EG14896A (en) |
| ES (1) | ES256657Y (en) |
| FI (1) | FI800007A (en) |
| MX (1) | MX149377A (en) |
| NO (1) | NO794220L (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3242940A1 (en) * | 1982-11-20 | 1984-05-24 | Hans Julius 6303 Hungen Schmitt | ACOUSTICALLY EFFECTIVE COMPONENT |
| DE4007556C2 (en) * | 1990-03-09 | 1998-05-07 | Gruenzweig & Hartmann Montage | Resonator backdrop for backdrop silencers |
| JP2522604B2 (en) * | 1990-04-26 | 1996-08-07 | 株式会社ユニックス | Sound absorbing material and method for manufacturing the same |
| CA2091288C (en) * | 1992-03-13 | 1995-11-28 | Toru Morimoto | Membranous-vibration sound absorbing materials |
| IT231856Y1 (en) * | 1993-03-05 | 1999-08-06 | Eurofibre Spa | THERMAL INSULATION AND SOUND ABSORBING PANEL |
| AU3300900A (en) | 2000-03-20 | 2001-10-03 | Newmat, S.A. | Flexible sheet fabrics for tensile structures, method for making same, tensile false ceilings comprising same |
| DE10337878B4 (en) | 2003-08-18 | 2008-02-21 | Silu Verwaltung Ag | Assembly tape with section-wise cover foil |
| FR2926099B1 (en) | 2008-01-09 | 2010-03-19 | Normalu | PATCH FOR ACCOUSTIC TIGHTS, SEALED AND PARTIALLY TRANSLUCENT |
| FR2970009B1 (en) * | 2010-12-30 | 2021-06-11 | Normalu | ACOUSTICALLY ABSORBENT PACKAGE |
| US11091909B2 (en) | 2017-05-08 | 2021-08-17 | Kvadrat Soft Cells A/S | Building panel adapted to be mounted at a ceiling or wall of a room and method of manufacturing such building panel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2192653A (en) * | 1937-11-13 | 1940-03-05 | Schenk Eduard | Acoustic construction |
| US2966954A (en) * | 1957-07-11 | 1961-01-03 | Celotex Corp | Acoustical correction element |
| US3821999A (en) * | 1972-09-05 | 1974-07-02 | Mc Donnell Douglas Corp | Acoustic liner |
| US3948347A (en) * | 1974-11-25 | 1976-04-06 | Gallagher-Kaiser Corporation | Acoustical panel |
| JPS5719759Y2 (en) * | 1976-01-28 | 1982-04-26 |
-
1979
- 1979-01-04 DK DK4379A patent/DK4379A/en unknown
- 1979-12-20 NO NO794220A patent/NO794220L/en unknown
- 1979-12-28 ES ES1979256657U patent/ES256657Y/en not_active Expired
- 1979-12-28 AT AT79303073T patent/ATE9017T1/en not_active IP Right Cessation
- 1979-12-28 DE DE7979303073T patent/DE2967185D1/en not_active Expired
- 1979-12-28 EP EP79303073A patent/EP0013513B1/en not_active Expired
-
1980
- 1980-01-02 AU AU54268/80A patent/AU533557B2/en not_active Ceased
- 1980-01-02 FI FI800007A patent/FI800007A/en not_active Application Discontinuation
- 1980-01-03 MX MX180672A patent/MX149377A/en unknown
- 1980-01-04 JP JP26480A patent/JPS5592446A/en active Granted
- 1980-01-05 EG EG08/80A patent/EG14896A/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ATE9017T1 (en) | 1984-09-15 |
| FI800007A (en) | 1980-07-05 |
| MX149377A (en) | 1983-10-28 |
| AU533557B2 (en) | 1983-12-01 |
| ES256657Y (en) | 1981-12-16 |
| DE2967185D1 (en) | 1984-09-20 |
| EP0013513A1 (en) | 1980-07-23 |
| NO794220L (en) | 1980-07-07 |
| JPS5592446A (en) | 1980-07-12 |
| DK4379A (en) | 1980-07-05 |
| AU5426880A (en) | 1980-07-10 |
| EG14896A (en) | 1986-12-30 |
| EP0013513B1 (en) | 1984-08-15 |
| ES256657U (en) | 1981-07-01 |
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