CA2075579A1 - Lightweight panelling and a method of manufacturing same - Google Patents
Lightweight panelling and a method of manufacturing sameInfo
- Publication number
- CA2075579A1 CA2075579A1 CA002075579A CA2075579A CA2075579A1 CA 2075579 A1 CA2075579 A1 CA 2075579A1 CA 002075579 A CA002075579 A CA 002075579A CA 2075579 A CA2075579 A CA 2075579A CA 2075579 A1 CA2075579 A1 CA 2075579A1
- Authority
- CA
- Canada
- Prior art keywords
- layer
- panelling
- core layer
- covering
- slits
- 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.)
- Abandoned
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000010410 layer Substances 0.000 claims abstract description 48
- 239000012792 core layer Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims description 7
- 241000264877 Hippospongia communis Species 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 229920000784 Nomex Polymers 0.000 claims description 2
- 239000004763 nomex Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 10
- 238000003754 machining Methods 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 240000007182 Ochroma pyramidale Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- E04C2/40—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 a number of smaller components rigidly or movably connected together, e.g. interlocking, hingedly connected of particular shape, e.g. not rectangular of variable shape or size, e.g. flexible or telescopic panels
- E04C2/405—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 a number of smaller components rigidly or movably connected together, e.g. interlocking, hingedly connected of particular shape, e.g. not rectangular of variable shape or size, e.g. flexible or telescopic panels composed of two or more hingedly connected parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/024—Honeycomb
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Abstract of the DISCLOSURE
In lightweight panelling, at least one core layer (10) is provided, to the outer surfaces (11,12) of which thin outer layers (15, 16) are attached. A plurality of parallel slits (17) of predetermined width are provided which extend from one intact outer layer (16) through a substantial part of the thickness of the core layer (10), in order to make the panelling easily deformable in one direction.
In lightweight panelling, at least one core layer (10) is provided, to the outer surfaces (11,12) of which thin outer layers (15, 16) are attached. A plurality of parallel slits (17) of predetermined width are provided which extend from one intact outer layer (16) through a substantial part of the thickness of the core layer (10), in order to make the panelling easily deformable in one direction.
Description
2~75~7~
LIG~T~EIGHT PANELLING AND A METHOD OF MANUFACTURING SAME
The present invention relates to panelling of lightweight construction and .to a ~ethod of manufacturing such panelling.
Known lightweight panelling is usually of sandwich construction and compri~es a core layer of foamed artificial resin, balsa wood or honeycomb material, plus outer layers to ~tiffen it. Preferably, the panelling is constructed with a core layer of honeycomb structure, su~h as is described in, for example, International Patent Application W0 ~9/10258.
In many applications, for example in the ~anufacture of a sliding door, it is advantageous for the panelling to be highly resilient or flexible in a first bending direction and simultaneously extremely rigid in a ~econd direction perpendicular to the first. The known panelling mentioned above cannot fulfill this requirement.
The object of the present invention iq to provide lightweight panelling with ~ predetermined degree of flexi~ility in one direction, which differ3 ~ubstantially from the degree of flexibility in a 3econd perpendicular direction.
According to a first a~pect of the present invent;on there is provided panelling o~ lightweight con~truction comprising a lightweight core layer and two relatively 2~75~7~
thinner outer layers joined respectively to two outer surface~ defined by the core layer, and wherein the core layer defines a plurality of parallel slits, each of a predetermined width and extending from an intact said outer layer through at least a substantial part of the thickness of said core layer.
According to a second aspect of the present invention there iq provided a method of manufacturing lightweight panelling having a lightweight core layer and comprising the steps of (a) applying first and second covering layers to first and second opposite surfaces of said core layer respectively;
(b) forming a plurality of slits, earh of a predetermined width, completely through said first covering layer and through a substantial part of the thickness of said core layer (10); and (c) finishing the panelling on at least the side of said first covering layer by the application thereto of a first outer layer.
lt will be appreciated that the first outer layer coverQ the outer openings of the ~lits and, on the one hand, endows the remaining core ~aterial with the required stiffness, while on the other hand, can be compressed in the places where it covers the slits to allow the panelling to flex toward said outer layer. On the ~pposite surface, however, the outer layer and the remaining core material attached to it are incomprecsible and provide a ~mooth surface that is merely bent.
Preferably, covering layers are attached to ~aid outer surfaces of the core layer between the core layer and the outer layer~. , 207~7~
Fig~. 1 to 5 show ~chematically various stage in the manufacture of one embodiment of lightweight panelling in accordance with the invention.
In the embodiment of the invention shown in the drawings, a core layer 10 comprising a honeycomb material with the cell axis of the honeycombs perpendicular to Raid outer surfaces 11, 12 is made from, for example, Nomex and paper. First and second covering layers 13, 14, which preferably comprise a web material preimpregnated with phenol, epoxy or thermoplastic material, are laid onto the outer Rurfaces 11 and 12 of the core layer 10. Onto the first covering layer 13 a tear-off web 18 iQ also laid and to the lower covering layer 14 is attached, ~y adhesive between the two layers, a superficial or outer layer 15 such as an adhesive sheet. This adhe~ive sheet 15 constitutes the outer surface of the finished structure and hence is preferably decorated or ornamented (colored, textured etc.) as the user desires.
The tear-off web 18 and the first outer layer 15 are each covered with a separating sheet 19, so that the stack 80 produced can be pressed between surfaces 20, 20~ of a heatable press, as shown in Fig. 1. During ~ompression and simultaneous heating in the pre~s, the covering layers 13 and 14 bond to the underlying core layer 10 a~d the fir~t outer layer 1~ bonds to the second covering layer 14.
After the bonds between the layers have hardened, the resulting laminated structure is laid on a support plate 21 with the ~irst outer ,la~er 15 face down, as shown in Fig.
2. This facilit~tes manipulation of the "blank". First, 2~75S79 the tear-off web 18 is removed, leaving a roughened surface on the first covering layer 13.
Next, a saw or an end mill is used to make a series of parallel slits 17 in the ~lank in such a way that a residual part of the thickness of the core layer 10 is retained, as shown in Fig. 3. In principle, it is also possible to extend the slits 17 all the way to the second covering layer 14 but care must be taken that the remaining material is sufficiently rigid to resist forces applied in a direction parallel to the surface whilst still being capable of bending elastically. Preferably, the depth of the slits is in the range corresponding to 80% to 95% of the thickness of the core layer and the slits are e~uidistant from one another, After the slits 17 have been made, the resulting structure, together with the support plate 21, is again placed between the compression surfaces 20, 20' of the heatable press, as shown in Fig. 4. The support plate 21 is prevented from sticking to the surface 20' by the interposition of a separating sheet 19 therebetween.
Prior to compression of the structure by the surface 20, an adhesive layer 22 is applied to the roughened surface of the first covering layer 13. On the adhesive layer is laid a second ~uperficial or outer layer 16, which in turn is separated from the associated compression surface 20 by a second separation ~heet 19. During the subsequent compression and heating process the ~econd outer layer 16 bonds to the underlying first covering layer 13.
The panelling so produced is now removed fro~ the support plate 21 and has a structure, in cross-section, as shown in Fig. 5.
It should be note~ at this juncture that, for clarity, the relative thickne~ses of the layerR 13-16 are greatly exaggerated in the drawings.
LIG~T~EIGHT PANELLING AND A METHOD OF MANUFACTURING SAME
The present invention relates to panelling of lightweight construction and .to a ~ethod of manufacturing such panelling.
Known lightweight panelling is usually of sandwich construction and compri~es a core layer of foamed artificial resin, balsa wood or honeycomb material, plus outer layers to ~tiffen it. Preferably, the panelling is constructed with a core layer of honeycomb structure, su~h as is described in, for example, International Patent Application W0 ~9/10258.
In many applications, for example in the ~anufacture of a sliding door, it is advantageous for the panelling to be highly resilient or flexible in a first bending direction and simultaneously extremely rigid in a ~econd direction perpendicular to the first. The known panelling mentioned above cannot fulfill this requirement.
The object of the present invention iq to provide lightweight panelling with ~ predetermined degree of flexi~ility in one direction, which differ3 ~ubstantially from the degree of flexibility in a 3econd perpendicular direction.
According to a first a~pect of the present invent;on there is provided panelling o~ lightweight con~truction comprising a lightweight core layer and two relatively 2~75~7~
thinner outer layers joined respectively to two outer surface~ defined by the core layer, and wherein the core layer defines a plurality of parallel slits, each of a predetermined width and extending from an intact said outer layer through at least a substantial part of the thickness of said core layer.
According to a second aspect of the present invention there iq provided a method of manufacturing lightweight panelling having a lightweight core layer and comprising the steps of (a) applying first and second covering layers to first and second opposite surfaces of said core layer respectively;
(b) forming a plurality of slits, earh of a predetermined width, completely through said first covering layer and through a substantial part of the thickness of said core layer (10); and (c) finishing the panelling on at least the side of said first covering layer by the application thereto of a first outer layer.
lt will be appreciated that the first outer layer coverQ the outer openings of the ~lits and, on the one hand, endows the remaining core ~aterial with the required stiffness, while on the other hand, can be compressed in the places where it covers the slits to allow the panelling to flex toward said outer layer. On the ~pposite surface, however, the outer layer and the remaining core material attached to it are incomprecsible and provide a ~mooth surface that is merely bent.
Preferably, covering layers are attached to ~aid outer surfaces of the core layer between the core layer and the outer layer~. , 207~7~
Fig~. 1 to 5 show ~chematically various stage in the manufacture of one embodiment of lightweight panelling in accordance with the invention.
In the embodiment of the invention shown in the drawings, a core layer 10 comprising a honeycomb material with the cell axis of the honeycombs perpendicular to Raid outer surfaces 11, 12 is made from, for example, Nomex and paper. First and second covering layers 13, 14, which preferably comprise a web material preimpregnated with phenol, epoxy or thermoplastic material, are laid onto the outer Rurfaces 11 and 12 of the core layer 10. Onto the first covering layer 13 a tear-off web 18 iQ also laid and to the lower covering layer 14 is attached, ~y adhesive between the two layers, a superficial or outer layer 15 such as an adhesive sheet. This adhe~ive sheet 15 constitutes the outer surface of the finished structure and hence is preferably decorated or ornamented (colored, textured etc.) as the user desires.
The tear-off web 18 and the first outer layer 15 are each covered with a separating sheet 19, so that the stack 80 produced can be pressed between surfaces 20, 20~ of a heatable press, as shown in Fig. 1. During ~ompression and simultaneous heating in the pre~s, the covering layers 13 and 14 bond to the underlying core layer 10 a~d the fir~t outer layer 1~ bonds to the second covering layer 14.
After the bonds between the layers have hardened, the resulting laminated structure is laid on a support plate 21 with the ~irst outer ,la~er 15 face down, as shown in Fig.
2. This facilit~tes manipulation of the "blank". First, 2~75S79 the tear-off web 18 is removed, leaving a roughened surface on the first covering layer 13.
Next, a saw or an end mill is used to make a series of parallel slits 17 in the ~lank in such a way that a residual part of the thickness of the core layer 10 is retained, as shown in Fig. 3. In principle, it is also possible to extend the slits 17 all the way to the second covering layer 14 but care must be taken that the remaining material is sufficiently rigid to resist forces applied in a direction parallel to the surface whilst still being capable of bending elastically. Preferably, the depth of the slits is in the range corresponding to 80% to 95% of the thickness of the core layer and the slits are e~uidistant from one another, After the slits 17 have been made, the resulting structure, together with the support plate 21, is again placed between the compression surfaces 20, 20' of the heatable press, as shown in Fig. 4. The support plate 21 is prevented from sticking to the surface 20' by the interposition of a separating sheet 19 therebetween.
Prior to compression of the structure by the surface 20, an adhesive layer 22 is applied to the roughened surface of the first covering layer 13. On the adhesive layer is laid a second ~uperficial or outer layer 16, which in turn is separated from the associated compression surface 20 by a second separation ~heet 19. During the subsequent compression and heating process the ~econd outer layer 16 bonds to the underlying first covering layer 13.
The panelling so produced is now removed fro~ the support plate 21 and has a structure, in cross-section, as shown in Fig. 5.
It should be note~ at this juncture that, for clarity, the relative thickne~ses of the layerR 13-16 are greatly exaggerated in the drawings.
Claims (17)
1. Panelling of lightweight construction comprising a lightweight core layer and two relatively thinner outer layers joined respectively to two outer surfaces defined by the core layer, and wherein the core layer defines a plurality of parallel slits, each of a predetermined width and extending from an intact said outer layer through at least a substantial part of the thickness of said core layer.
2. Panelling as claimed in Claim 1, wherein said core layer comprises a honeycomb material with the cell axis of the honeycombs perpendicular to said outer surfaces.
3. Panelling as claimed in Claim 2, wherein said core layer comprises Nomex and paper.
4. Panelling as claimed in Claim 1, wherein covering layers are attached to said outer surfaces of the core layer between the core layer and the outer layers.
5. Panelling as claimed in Claim 4, wherein said covering layers comprising preimpregnated web material.
6. Panelling as claimed in Claim 1, wherein the depth of the slits is in the range corresponding to 80% to 95% of the thickness of the core layer.
7. Panelling as claimed in Claim 1, wherein the slits are equidistant from one another.
8. A method of manufacturing lightweight panelling having a lightweight core layer and comprising the steps of (a) applying first and second covering layers to first and second opposite surfaces of said core layer respectively;
(b) forming a plurality of slits, each of a predetermined width, completely through said first covering layer and through a substantial part of the thickness of said core layer (10); and (c) finishing the panelling on at least the side of said first covering layer by the application thereto of a first outer layer.
(b) forming a plurality of slits, each of a predetermined width, completely through said first covering layer and through a substantial part of the thickness of said core layer (10); and (c) finishing the panelling on at least the side of said first covering layer by the application thereto of a first outer layer.
9. A method as claimed in Claim 8, comprising the further step of (d) applying a second outer layer to said second covering layer.
10. A method as claimed in Claim 8, wherein said first and second covering layers are bonded to the core layer in a press under the action of heat.
11. A method as claimed in Claim 8, wherein said first and second covering layers comprise preimprednated web material.
12. A method as claimed in Claim 8, wherein said outer layer is attached to said underlying covering layer by an adhesive.
13. A method as claimed in Claim 8, wherein said slits are formed by machining.
14. A method as claimed in Claim 13, wherein said slits are formed by sawing or milling.
15. A method as claimed in Claim 8, wherein in step (a) a tear-off web is applied to the first covering layer and immediately prior to step (c) said tear-off web is removed to leave the surface defined by the first covering layer in a suitable condition for attachment by adhesive of said first outer layer.
16. A method as claimed in Claim 8, wherein the blank formed in step (a) is fixed to a manipulable support plate for the duration of the subsequent steps of the method.
17. A method as claimed in Claim 9, wherein the steps (a) and (d) are carried out simultaneously.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4126781.8 | 1991-08-13 | ||
| DE4126781A DE4126781C2 (en) | 1991-08-13 | 1991-08-13 | Lightweight surface element and method for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2075579A1 true CA2075579A1 (en) | 1993-02-14 |
Family
ID=6438225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002075579A Abandoned CA2075579A1 (en) | 1991-08-13 | 1992-08-07 | Lightweight panelling and a method of manufacturing same |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0527484A1 (en) |
| CA (1) | CA2075579A1 (en) |
| DE (1) | DE4126781C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7997384B2 (en) | 2007-05-15 | 2011-08-16 | Airbus Operations Gmbh | Multilayer board for reducing solid-borne sound |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19527081C1 (en) * | 1995-07-25 | 1996-09-19 | Buderus Sell | Flat light construction element |
| DE19801045A1 (en) * | 1998-01-14 | 1999-07-22 | Kaldewei Franz Gmbh & Co | Laminar material surface |
| DE10034990B4 (en) * | 2000-07-19 | 2005-02-10 | Airbus Deutschland Gmbh | Multi-layer panel for reducing the sound radiation |
| DE10037317A1 (en) * | 2000-07-29 | 2002-02-14 | Airbus Gmbh | Technical honeycomb has coating system on end sides, adhesive system, tear-off tissue, openings, and walls. |
| DE10231791C1 (en) * | 2002-07-15 | 2003-12-18 | Airbus Gmbh | Multi-layer panel for reducing sound radiation e.g. for aircraft cabin, having core layer provided with curved vertical and horizontal slits |
| JP4657634B2 (en) | 2004-06-10 | 2011-03-23 | 日東電工株式会社 | Steel sheet reinforcement sheet |
| DE102008063923A1 (en) | 2008-12-19 | 2010-06-24 | Airbus Deutschland Gmbh | Multi-layer panel for sound insulation |
| FR2979211A1 (en) * | 2011-08-22 | 2013-03-01 | Teddy Jean Alain Robert | Deckchair, has flexible base tensioned by system of flexible and removable structures, where parallelepipeds are attached on straps of structures, and female and male parts are used as junction between base and structures |
| EP2740588A1 (en) * | 2012-12-04 | 2014-06-11 | Magna Steyr Fahrzeugtechnik AG & Co KG | Sandwich component, bodywork section of a motor vehicle and method for producing a sandwich component |
| US11557937B2 (en) | 2018-11-15 | 2023-01-17 | Cummins Power Generation Ip, Inc. | Genset enclosures with low acoustic noise |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2768924A (en) * | 1956-06-14 | 1956-10-30 | Cable Makers Australia Proprie | Cushioning element |
| GB1096982A (en) * | 1963-11-21 | 1967-12-29 | Benbow & Co Modern Shopfitters | Laminated panel |
| FR1582581A (en) * | 1968-07-30 | 1969-10-03 | ||
| CA966967A (en) * | 1972-04-18 | 1975-05-06 | Chemacryl Plastics Limited | Flexible core material for laminated structures and method of producing the same |
| US4121008A (en) * | 1975-02-07 | 1978-10-17 | Unitex Limited | Foam sandwich constructions |
| GB1603085A (en) * | 1977-06-03 | 1981-11-18 | Ciba Geigy Uk Ltd | Fire protection means |
| FR2562837B1 (en) * | 1984-04-16 | 1987-06-26 | Mcintosh Jonathan | COMPOSITE CONSTRUCTION ELEMENTS AND METHOD FOR THE PRODUCTION OF MULTI-DIRECTIONAL STRUCTURES BY FORMING AND / OR ASSEMBLY OF SUCH ELEMENTS |
| DE8624880U1 (en) * | 1986-09-17 | 1987-08-27 | Euro-Composites S.A., Echternach, Lu | |
| GB8710812D0 (en) * | 1987-05-07 | 1987-06-10 | Bpb United Kingdom Ltd | Profiled insulation material |
| EP0412118A4 (en) * | 1988-04-29 | 1991-09-25 | Barry M. Fell | Reinforced thermoplastic honeycomb structure |
| EP0424312A1 (en) * | 1989-10-13 | 1991-04-24 | Alusuisse-Lonza Services Ag | Flexible laminate |
-
1991
- 1991-08-13 DE DE4126781A patent/DE4126781C2/en not_active Expired - Fee Related
-
1992
- 1992-08-07 CA CA002075579A patent/CA2075579A1/en not_active Abandoned
- 1992-08-12 EP EP19920113755 patent/EP0527484A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7997384B2 (en) | 2007-05-15 | 2011-08-16 | Airbus Operations Gmbh | Multilayer board for reducing solid-borne sound |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4126781A1 (en) | 1993-02-18 |
| DE4126781C2 (en) | 1997-02-20 |
| EP0527484A1 (en) | 1993-02-17 |
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