EP4330034A1 - Structure alvéolaire à base de liège, procédé de fabrication de panneaux incorporant ladite structure, et leurs utilisations - Google Patents
Structure alvéolaire à base de liège, procédé de fabrication de panneaux incorporant ladite structure, et leurs utilisationsInfo
- Publication number
- EP4330034A1 EP4330034A1 EP22735523.7A EP22735523A EP4330034A1 EP 4330034 A1 EP4330034 A1 EP 4330034A1 EP 22735523 A EP22735523 A EP 22735523A EP 4330034 A1 EP4330034 A1 EP 4330034A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- honeycomb structure
- strips
- zones
- sheets
- cork
- 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- Withdrawn
Links
Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B32B5/30—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 formed of particles, e.g. chips, granules, powder
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- 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
- B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
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- 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
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- B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
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- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/042—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
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- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0457—Details of the power supply to the electromagnets
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/06—Vegetal particles
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- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/06—Vegetal particles
- B32B2264/062—Cellulose particles, e.g. cotton
- B32B2264/065—Lignocellulosic particles, e.g. jute, sisal, hemp, flax, bamboo
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- B32B2264/06—Vegetal particles
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- B32B2272/00—Resin or rubber layer comprising scrap, waste or recycling material
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/712—Weather resistant
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- B32B2410/00—Agriculture-related articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
- B32B2419/04—Tiles for floors or walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
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- B32B2553/00—Packaging equipment or accessories not otherwise provided for
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- B32B2607/00—Walls, panels
Definitions
- the present invention relates to the field of alveolar structures of the honeycomb type, panels comprising such alveolar structures and the process for manufacturing these panels, as well as various uses of said alveolar structures.
- the invention relates to a stretchable and retractable honeycomb-type honeycomb structure, formed of longitudinal strips having two opposite faces, said strips being arranged side by side facing each other, each strip being assembled on the face opposite the adjacent strip by an alignment of connection zones, the alignment of the connection zones of one of the faces of a strip being axially offset from the alignment of the connection zones of the opposite face.
- Honeycomb structures of this type have been known for a long time; they are for example made of paper and can be assembled and placed between two sheets of paper or cardboard to form insulation elements, packaging, etc... Their main advantage is their lightness, but they have low impact resistance , as well as a low resistance to compression, which excludes them from use in the production of furniture, for example.
- a first object of the present invention is to overcome the drawbacks of the structures of the prior art by proposing a honeycomb structure in an inexpensive material that can be used in various environments, such as humid environments, without being degraded .
- Another object of the invention is to provide a honeycomb structure in a recyclable material, preferably in a biosourced material, or from recycled material.
- Another object of the invention is to provide a honeycomb structure that is both light and mechanically resistant, in particular resistant to compression, to shocks, etc.
- Another object of the invention is also to provide a honeycomb structure that can be produced by means of a continuous process, making it possible to manufacture large structures.
- the present invention relates to a honeycomb structure, in particular formed of cells of the honeycomb type, stretchable, formed of longitudinal strips having two opposite faces, said strips being arranged side by side facing each other, each strip being assembled to the face facing the adjacent strip by an alignment of connection zones, the alignment of the connection zones of one of the faces of a strip being offset axially from the alignment of the connection zones of the opposite face, and is characterized in that the strips are made of material based on agglomerated cork with a binder and in that the connection zones comprise stitches and/or adhesion zones by gluing.
- honeycomb type cells with a section of substantially polyhedral general shape, in particular hexagonal, or of substantially oval shape.
- Cork is a natural material. Two types of cork-based materials can be used: on the one hand male or expanded cork, black in color, from the first stripping (first harvest) and prepared by overheating with steam by welding into a compact block due to the presence within it of suberin, and on the other hand the female cork of blond color, resulting from the second stripping (second harvest) and prepared by crushing the bark which is agglomerated with a binder. Cork is of low density and is by nature a very good thermal, acoustic and vibration insulator. In addition, it is resistant to fire and water, thanks to the suberin that permeates its cells. Cork also has the advantage of being a recyclable material.
- honeycomb structure according to the invention made of cork-based material, has, among other things, good thermal, acoustic and vibration insulation performance, performance which is amplified by the presence of nest-shaped cells of bee.
- the cork-based materials used as insulators could certainly include cells, but these were made by machining (such as hollowing, drilling, tapping), with many scraps and loss. of matter.
- this cork is in the form of grains or powder, agglomerated with a binder;
- the binder of the agglomerated cork may be a synthetic polymer, such as polyurethane (PU), or advantageously a biobased polymer, such as polylactic acid (PLA), suberin or another natural resin.
- PU polyurethane
- PLA polylactic acid
- the structure according to the invention is light (the strips can be a few millimeters thick), despite a density of the agglomerated cork which can reach 350 kg/m3.
- the cork grains or powder can come from recycled cork, for example from reground cork stoppers.
- connection zones comprising either stitches, or connection zones by gluing, or a combination of these two modes of connection, that is to say either an alternation of sewn and glued connection zones for the assembly of two strips forming a pair or an alternation of these two modes of connection from one pair of strips to another.
- the adhesion zones comprise heat-bonded zones, preferably these adhesion zones comprise heat-bonded tapes.
- the material forming said strips may be a mixture of cork and an elastomeric material, such as rubber, in the form of powder and/or of agglomerated granules. Nevertheless, in such a composite material, the cork is then advantageously the majority constituent and can represent at least 50% by weight of the material constituting the strips of the alveolar structure.
- the structure according to the present invention deployable and retractable like an accordion, allows storage can be cumbersome, and can then be easily cut, on demand, depending on the subsequent uses envisaged.
- the present invention also relates to a panel comprising a honeycomb structure as described above forming, in the stretched state by deployment of the cells, the core of said panel and being disposed between two plates or sheets.
- said panel may be generally planar, corrugated or curved. If the alveolar structure is sandwiched for example between two flexible sheets, the final shape of the element produced can be cylindrical in a variant.
- the plates or sheets can be made of a material other than cork, such as wood, or of a material chosen from among other natural materials complexed, laminated or laminated with cork such as flax, hemp, reed, cellulose fibers , wool, wood, banana, coconut or with an elastomeric material such as rubber.
- said plates or sheets are also made of material based on agglomerated cork with a binder.
- said panel according to the invention can be entirely made of cork-based material, or even entirely made of cork, with the advantages mentioned above with regard to this material: resistance to water, to fire, to shocks, to compression, thermal, acoustic and vibration insulation, its biosourced origin, its recyclable nature, and its lightness.
- the deployed cells of the cellular structure in the stretched state can be at least partially filled with a second thermal and/or acoustic and/or vibratile insulating material.
- This second material can be, in particular, chosen from natural materials such as wood fibers, hemp, flax, or cork granules without binder.
- the plates or sheets between which the alveolar structure is sandwiched can, depending on the desired end use, and in a non-limiting way, be covered with a fabric based on natural fibers or not, such as fibers of linen, carbon, Kevlar ®, to increase the mechanical resistance of said panel, for example to shocks or tears or its UV resistance, or its water-repellent performance, or a layer of another material, among which mention may be made of non-limiting manner: wood, a polymer, plaster, cement.
- Said panel can also be part of a composite element in order to further increase its resistance to compression or be part of an assembly of several panels. It can be painted or screen printed.
- the present invention also relates to a method of manufacturing a panel as described above incorporating the honeycomb structure according to the invention.
- the panel manufacturing process comprises the following successive steps:
- -supply in the form of a first roll and a second roll, of plates/sheets based on agglomerated cork, said first and second rolls having axes parallel to each other,
- connection of two adjacent strips to each other can be carried out alternately by sewing or by heat-sealing, preferably by means of heat-sealing tapes: thus the production of the honeycomb structure does not require passage through a drying. Only hot compression (for example from 80° C. or at a temperature above 100° C., depending on the nature of the heat-sealing tape) of the superimposed strips is sufficient to allow heat-sealing.
- the process for manufacturing the panel according to the invention comprises the following successive steps:
- This second embodiment refers to an assembly of the bands only by sewing. Such an assembly gives the structure, compared to an assembly of the strips by gluing providing a certain local rigidity, greater flexibility, facilitating the deployment of the cells.
- a wide variety of stitches is possible: the choice can be made according in particular to the thickness of the cork-based strips, the desired spacing of the cells, or even according to the stretching of the strips during their deployment.
- the nature of the thread used for joining the strips by sewing is not limited, and depends in particular on the field of application for which the structure is made.
- the yarn used for joining the strips by sewing can be a cork-based yarn, such as for example the yarn described in patent EP3409830B1.
- the transverse cutting of the cork-based plates or sheets can be carried out either perpendicular to the direction of unrolling, or at an angle less than 90° depending on the final shape required for the honeycomb structure.
- This cut can also be different depending on the "blocks" of assembled strips, in particular to give a specific shape to the honeycomb structure (for example to create undulations or a general beveled shape of the honeycomb structure, depending on the end use considered).
- the method according to the invention may include steps for finishing the panel, such as finishing the edges of said panel to adapt it to the intended field of application: for example to avoid thermal bridges for the production of insulated packaging.
- the present invention also relates to the use of the honeycomb structure or of the panel described above as thermal and/or acoustic and/or vibratory insulation, protection or packaging element, shock-absorbing element, element resistant to compression, floating element, the cells possibly being empty or at least partially filled.
- partially filled cells is meant the filling of at least part of the volume of each cell and/or the filling of at least a certain number of cells of the cellular structure.
- honeycomb structure or of the panel can be, according to a non-exhaustive list, in the fields of building, land vehicles, boating, aeronautics, packaging, horticulture or viticulture, furniture...
- the honeycomb structure according to the present invention can be used in viticulture, or in horticulture, in particular in the deployed state of the cells with filling of said cells with a growing medium, such as potting soil, thus taking advantage the properties of both thermal insulation (eg against frost) and water resistance of the cork-based material.
- FIG. 1 is a diagram partially representing a honeycomb structure according to the present invention
- FIG. 2 is a diagram representing a panel incorporating a honeycomb structure according to the invention.
- FIG. 3 is a diagram showing a device for manufacturing a honeycomb structure, according to the invention, by sewing,
- FIG. 4 is a diagram showing a device for manufacturing a honeycomb structure, according to the invention, by means of heat-sealing tapes,
- FIG.5 is a perspective side view of the device shown schematically in FIG.
- FIG. 6 is another perspective side view of the device of Figure 5
- FIG. 7 is a diagram showing a device for manufacturing a honeycomb structure according to the invention by alternating connection by sewing and by means of heat-sealing tapes.
- Figure 1 shows a partial example of a honeycomb structure 1 in which an alternation of strips hereinafter referred to as odd 3 and even strips 4 are assembled by alignments of connecting zones 5, the alignment connecting zones of an odd strip with the adjacent even strip being axially offset from the alignment of the connecting zones of the pairs of adjacent strips.
- the connection zones can be stitches 8 or heat-sealed tapes 6.
- the constituent material of the bands is based on cork agglomerated with a binder such as polyurethane or suberin.
- the thickness of said strips can be between 0.5 mm and several mm, preferably between 1 mm and 3 mm.
- the honeycomb structure in the deployed state constitutes the core of a panel 11 disposed between two sheets or plates 12.
- These sheets or plates 12 can also be based on cork or another material to impart various properties to said panel (stiffening, insulation, complementary, facing, etc.).
- the cork or cork-based sheets which will form the strips of the honeycomb structure 1 are brought by means of a roller 13.
- a roller loader 14 can be provided nearby.
- the manufacturing device comprises a first telescopic and mobile sewing tool 15, at least one second sewing tool 16, a strip cutting tool 17 which can be a cutter, a rotary cutter or variant a laser cutting device, a second sewing tool 17 cut strips and then a comb type device 18 fixed on a rotary axis for the assembly of the honeycomb structure and its deployment.
- the honeycomb structure 1 then passes through a drive wheel 19 towards the sandwiching part of the honeycomb structure between two sheets or plates fed by rollers 20 and 21 to form a panel according to the present invention.
- the device for sandwiching 22 comprises rollers for bonding and compressing the plates or sheets 20 and 21 against said honeycomb structure 1.
- Figure 4 schematizes the device for assembling the strips of the honeycomb structure by means of heat-sealing tapes 23 fed by rollers 24. The assembly of part of the heat-sealing tapes is carried out at station 25 then at the second station 26. A cutting device 17 of the cutter or rotary cutter type is also provided for cutting the material into strips. In the running direction of the strips, a hot compression device 27 is provided for the final assembly of the strips.
- honeycomb structure is then driven by the drive wheel 19 towards the sandwiching part of the structure between two sheets 20 and 21 as shown for the sewing for the device of Figure 3.
- FIGS 5 and 6 use the same references as Figure 4, making the various elements of this manufacturing device more visible by means of heat-sealing tapes.
- Figure 7 groups together positions for both assembly by sewing and assembly by heat-sealing tapes 23.
- the reference numbers applying to this Figure 7 are identical to those of Figures 3 and 4.
- the roller 13 for supplying cork or cork-based sheets unrolls the latter in the direction of travel F in the manufacturing device; this embodiment limits the width of the panels to the dimension of the width of the cork sheets currently marketed.
- the roller 13 can be arranged along an axis perpendicular to the manufacturing device, that is to say allowing the sequential unwinding of cork or cork-based sheets transversely to the direction of travel F in the manufacturing device; the length of each of these sheets, which then corresponds to the width of the panel to be produced, thus allows the production of very wide panels if necessary.
- the method according to the present invention is rapid and does not require passage through an oven. Only the compression step is carried out hot in the embodiment by means of heat-sealed tapes.
- the method according to the invention is thus also less energy-intensive.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2104469A FR3122353B1 (fr) | 2021-04-29 | 2021-04-29 | Structure alvéolaire à base de liège, procédé de fabrication de panneaux incorporant ladite structure, et leurs utilisations |
| PCT/FR2022/050778 WO2022229551A1 (fr) | 2021-04-29 | 2022-04-25 | Structure alvéolaire à base de liège, procédé de fabrication de panneaux incorporant ladite structure, et leurs utilisations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4330034A1 true EP4330034A1 (fr) | 2024-03-06 |
Family
ID=76601370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22735523.7A Withdrawn EP4330034A1 (fr) | 2021-04-29 | 2022-04-25 | Structure alvéolaire à base de liège, procédé de fabrication de panneaux incorporant ladite structure, et leurs utilisations |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4330034A1 (fr) |
| FR (1) | FR3122353B1 (fr) |
| WO (1) | WO2022229551A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2486874A1 (fr) | 1979-07-19 | 1982-01-22 | United Kingdom Government | Structure en nid d'abeilles perfectionnee et procede de fabrication |
| FR2465039A1 (fr) * | 1979-09-17 | 1981-03-20 | Bruguiere Christian | Panneau isolant |
| FR2925863B1 (fr) * | 2007-12-26 | 2010-02-12 | Afitex Internat | Produit a alveoles formees par agrafage de bandes, procede et equipement de fabrication d'un produit alveolaire. |
| US8206546B2 (en) * | 2008-06-13 | 2012-06-26 | The Boening Company | Heat shield having strain compliant matrix and method of forming same |
| EP3409830B1 (fr) | 2016-01-29 | 2020-11-18 | Sedacor - Sociedade Exportadora De Artigos de Cortica, Lda. | Fil de liège, procédé d'obtention et ses utilisations |
-
2021
- 2021-04-29 FR FR2104469A patent/FR3122353B1/fr active Active
-
2022
- 2022-04-25 EP EP22735523.7A patent/EP4330034A1/fr not_active Withdrawn
- 2022-04-25 WO PCT/FR2022/050778 patent/WO2022229551A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022229551A1 (fr) | 2022-11-03 |
| FR3122353B1 (fr) | 2023-04-14 |
| FR3122353A1 (fr) | 2022-11-04 |
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