WO2015067898A1 - Panel for walls of buildings made from bamboo rods - Google Patents
Panel for walls of buildings made from bamboo rods Download PDFInfo
- Publication number
- WO2015067898A1 WO2015067898A1 PCT/FR2014/052830 FR2014052830W WO2015067898A1 WO 2015067898 A1 WO2015067898 A1 WO 2015067898A1 FR 2014052830 W FR2014052830 W FR 2014052830W WO 2015067898 A1 WO2015067898 A1 WO 2015067898A1
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- WO
- WIPO (PCT)
- Prior art keywords
- bamboo
- panel
- layer
- rods
- bamboo rods
- Prior art date
Links
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 116
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 116
- 241001330002 Bambuseae Species 0.000 title claims abstract description 116
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 116
- 239000011425 bamboo Substances 0.000 title claims abstract description 116
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 210000002268 wool Anatomy 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 210000001145 finger joint Anatomy 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 1
- 239000002023 wood Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000004567 concrete Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 244000020551 Helianthus annuus Species 0.000 description 1
- 235000003222 Helianthus annuus Nutrition 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013501 sustainable material Substances 0.000 description 1
- 230000009897 systematic effect Effects 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
- B32B3/18—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 an internal layer formed of separate pieces of material which are juxtaposed side-by-side
- B32B3/20—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 an internal layer formed of separate pieces of material which are juxtaposed side-by-side of hollow pieces, e.g. tubes; of pieces with channels or cavities
-
- 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
- B32B7/03—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 with respect to the orientation of features
-
- 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
- B32B3/02—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 features of form at particular places, e.g. in edge regions
- B32B3/08—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 features of form at particular places, e.g. in edge regions characterised by added members at particular 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
- 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
- B32B3/14—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 face layer formed of separate pieces of material which are juxtaposed side-by-side
-
- 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
- B32B5/02—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 structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- 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
-
- 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- 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
-
- 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- 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
- B32B9/047—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 made of fibres or filaments
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
- E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
- E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
- E04C2/18—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like with binding wires, reinforcing bars, or the like
-
- 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
-
- 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
- B32B2607/00—Walls, panels
Definitions
- the invention relates to the field of building construction, and more particularly relates to a component panel of walls for buildings.
- the field of building construction is a very large consumer of cement. It is responsible for large quantities of carbon dioxide emissions produced, as well as energy sources consumed during the manufacture of cement.
- wood is more and more used. When it is harvested with systematic planting of young trees for every tree felled, wood is a sustainable material. In addition it allows to obtain lighter constructions than concrete.
- wood although lighter than concrete, remains a heavy material. Moreover, its sustainable exploitation is binding. The growth time of a tree is usually 30 years in our latitudes and more than 60 years in the forests of northern Europe.
- DE196 10 247 discloses a panel made from pellet, rods or fibers bonded by a binder. These stems or fibers can come from sunflower flowers. However, these panels are limited to a coating use, and have a mechanical characteristic that of the binder reinforced with fibers.
- US2,369,006 discloses a structure made of calibrated tubes assembled on the model of honeycomb structures.
- the document cites bamboo as a possible raw material, but the solution can not work with natural bamboo, of varying diameter along the length of the bamboo stems and with differences in diameter from one bamboo stem to another .
- the present invention proposes to remedy at least some of the aforementioned disadvantages and proposes a solution that allows the use of bamboo rods in a panel so as to confer on the panel the characteristics of mechanical strength of the bamboo rods, in addition to their thermal insulation characteristics.
- the invention relates to a panel comprising at least a first layer of bamboo rods parallel to each other and a second layer of rods of bamboo parallel to each other.
- This panel is particular in that the bamboo stems of the second layer are substantially perpendicular to the bamboo stems of the first layer.
- the panel according to the invention can be cut on site, to adapt to the actual size of the building to be built, both for the length and for the width, and it is possible to cut openings for a door or a window.
- the bamboo rods of the first and second layer can be in one piece over the entire length, respectively width of the panel; this characteristic makes it possible to confer on the panel a compressive strength in the direction of its length and its width, the panel thereby becoming a structural panel, suitable for constituting a wall of a building and supporting a roof,
- said panel may comprise bamboo rods consisting of a score of several pieces of raw bamboo rods, thus allowing the use of a maximum of raw bamboo stems with a minimum of falls,
- said bamboo rods may comprise an assembly trunnion at each assembly, allowing a reliable and solid assembly,
- said panel may further comprise a filler layer consisting substantially of fibers and / or bamboo wool or other vegetable wool, connected by a binder; such an arrangement improves the thermal qualities of the panel, and can accommodate fluid conduits or electricity,
- said panel may comprise a layer of bamboo rods arranged obliquely with respect to the bamboo rods of said first layer, thus making it possible to guarantee the squareness of the panel.
- Another layer of oblique bamboo rods crossing said layer may be arranged to take up the squaring efforts in both directions, while maintaining the advantage of being able to cut the panel to length or to cut door and window openings therein.
- said panel may comprise two tie-rods arranged along the two diagonals of said panel, so as to maintain the squareness thereof, such tie rods being able to be arranged in a filling layer, where appropriate, and may be cables, said panel may comprise at least one needle emerging on an external face of said panel and passing through at least one layer of said panel, said needle being arranged to be able to inject a binder or a resin, and pierced laterally so as to spread said binder or said resin in another layer further away from said outer face; this characteristic makes it possible to improve the distribution of the binder or the resin, and also makes it possible to bind the layers together; several needles can be spread across the panel surface
- the said panel may comprise an elastic edge so as to distribute the forces between the bamboo rods, for example consisting of adhesive mortar or expanded polyethylene.
- the present invention further relates to a method of manufacturing a panel according to the invention, comprising the following steps:
- Such a process allows for optimal use of harvested raw bamboo stems, and to reduce both layer thickness differences and falls.
- the advantage of the present invention is that it makes it possible to make a panel from bamboo, and therefore by a sustainable exploitation of natural resources, which has remarkable mechanical and thermal characteristics.
- the ease of adaptation to the geometric constraints of a building are also easy to respect by the flexibility of adaptation of such panels.
- Other features and advantages of the invention will emerge from the following detailed description relating to an exemplary embodiment given by way of indication and not limitation.
- FIG. 1 shows a perspective front view of a panel according to the invention
- FIG. 2 represents a schematic view of a machine involved in the manufacture of the panel of FIG. 1;
- FIG. 3 represents a detail of a particular embodiment of the panel of FIG. 1;
- FIG. 4 represents a plan view of a particular embodiment of the panel of FIG. 1;
- FIG. 5 shows a plan view of another embodiment of the panel of FIG. 1;
- a preferred embodiment of the present invention relates to a panel having a first layer 1 of bamboo rods 5 substantially parallel to each other, a second layer 2 of bamboo rods 5 substantially parallel to each other, and perpendicular to those of the first layer 1, a filler layer 3 with bamboo fibers and / or bamboo wool, and / or other filler materials, and a fourth layer 4 of bamboo stems.
- the panel is covered on both sides by a thin slab 6, which can be made of machined profiles of bamboo, or wood or plastic, to give a finished appearance to the panel.
- the thin slabs 6 of the top are shown in transparency in FIG. 1.
- Such thin slabs 6 may also be replaced by a plasterboard or cement, or cement on one side and plaster on the other, depending on the finishes and external characteristics desired.
- a binder 7 is disposed between the bamboo rods 5, to hold them together, and for the maintenance of the layers between them.
- the binder may be for example a plant concrete, for example with hemp, having good thermal characteristics. It is possible to form the panel with the bamboo rods 5, then to immerse him in such a concrete, then let the concrete take hold, thus fixing the whole panel.
- the binder can also be a resin, which can be sprayed onto the panel consisting of bamboo rods 5.
- the panel can then be placed in a press during the polymerization of the resin, for a good setting up of the layers 1, 2, 4 in relation to each other.
- a needle may for example be a piece of bamboo rod, pierced laterally; it is thus possible to inject resin through the end of the piece of rod, and this rod is dispersed in the layers 1, 2, 3, 4 around the piece of rod, and thus ensures the connection between the layers 1, 2 , 3, 4.
- the same needle method can be used to inject the binder between the bamboo rods 5, and between the layers 1, 2, 3, 4.
- Such a needle may also be a piece of bamboo rod, pierced to let a bamboo stem 5 from each of the layers 1, 2, 4 of bamboo rods 5.
- Such an arrangement is a little more difficult to implement, but makes it possible to ensure a very good link between the layers 1, 2, 3, 4. It is then advisable to cut a little bit the rods adjacent to those which cross the piece of bamboo rod, to leave room for the wall piece of bamboo stalk.
- the needle For the introduction of the needle, it is possible to drill the panel, preferably according to a drilling diameter smaller than the diameter of the bamboo rods constituting the layers 1, 2, 4 of the panel, to avoid cutting completely. one of the bamboo stems of the panel.
- the binder 7 does not completely fill the interstices between the bamboo rods, but spaces are left free. This allows the bamboo stalks to deform and thus provide flexibility. Thus the panel is able to resume a mechanical support force, said load is distributed naturally on all bamboo rods 5 which are arranged in the direction of the load.
- the bamboo rods 5 are in one piece over the entire length of the panel. This allows them to contribute to the recovery of a compression load in the direction of the rod, being in one piece between the point of application of the load on one side of the panel, and the fulcrum of the other side of the panel.
- raw bamboo rods 8 are introduced into a selection line 9 comprising a diameter measuring means 10 such as a camera or a probe, and a cutting means 11 such that 'a saw.
- the portions of the raw bamboo rod 8 having too many outside diameters are then cut, and the pieces of raw bamboo rod 8 having outer diameters sufficiently close to each other are abutted. External diameters between 20 and 25mm, between 25 and 30mm, between 30 and 40mm, and between 40 and 50mm may for example be provided.
- a raw bamboo rod 8 whose outer diameter is over a part of its length between 25 and 30mm, and which has portions of raw bamboo rod 8 of diameter less than 25mm these parts are cut, and butted to rods raw bamboo 8 diameter between 20 and 25mm.
- Fitting two pieces of raw bamboo rods 8 is done by sawing the two ends 12, calibrating the internal hollow 13, then introducing a trunnion 14 into the calibrated recess of each of the ends 12, and bonding said trunnion 14, which can also be made of calibrated bamboo of smaller diameter.
- Such a method provides bamboo rods 5 of any length, for example up to 2, 3, or even 6 meters long, with a diameter in the same range over the entire length.
- a raw bamboo stem 8 is a bamboo rod before cutting and assembly
- a bamboo rod 5 is a rod ready for use in a panel according to the invention. , where appropriate after assembly of several pieces of raw bamboo stems 8.
- the second layer 2 can then consist of bamboo rods 5 in one piece over the entire width of the panel, and also of substantially constant thickness, said thickness being able to be different from one layer to another.
- the fourth layer 4 may be formed in the direction of the first layer 1 or the second layer 2, or a fifth layer may be provided with bamboo rods 5 arranged perpendicularly to those of the fourth layer 4.
- the filling layer 3 allows on the one hand to absorb any extra thicknesses of the layers 1, 2 and 4, and to prevent them from moving towards the outside of the panel.
- the filling layer 3 also makes it possible to provide additional thermal and / or sound insulation, as well as to guarantee the airtightness of the panel. Indeed the binder between the bamboo rods 5 is not sufficient to ensure such a seal. It is quite difficult and expensive to completely fill the interstices between the bamboo rods. Moreover, as indicated above, it may be advantageous not to completely fill said gaps, and free spaces, to allow a little movement of the stems and give them a little elasticity. This allows said rods by buckling to slightly adapt their lengths, and to allow a collective resistance of the rods to compression in length of the panel.
- the presence of the second layer 2, with bamboo rods 5 perpendicular to those of the first layer 1, allows on the one hand to give the panel the ability to cut to length, or to cut openings for a door or a window; it allows further by, especially in the variant of bamboo rods 5 in one piece, to confer on the panel a compressive strength in the width direction, considered here as being the direction of the bamboo rods 5 of the second layer 2.
- the perpendicular arrangement of the rods of the second layer 2 relative to those of the first layer 1 provides a panel resistant to compression in both directions of the panel plane, length and width.
- Another solution shown in FIG. 4, consists in arranging, for example in the fourth layer 4, the bamboo rods inclined with respect to the length of the panel, as well as, if appropriate, depending on the quantity and effectiveness of the binder, in a complementary layer, bamboo stems 15, 16 cross-cut resisting in the direction of their length prohibit any deformation outside the panel. It is also possible to provide a particular connection, for example by resin, at the ends of the bamboo rods 15, allowing their tensile stress, and to avoid a complementary layer of bamboo rods 16.
- the inclination may be about twenty degrees, as shown in fig. 4, but it can also be stronger, up to 45 ° and beyond.
- FIG. 5 Yet another solution, shown in FIG. 5, consists of arranging two cables or tie rods 17 in the two diagonals of the panel, and four brackets 18, one in each corner of the panel. These tie rods 17 are tensile strength, and thus prohibit deformation off the square of the panel. Such cables or rods 17 may be arranged for example in the filling layer 3 and are then invisible, the brackets 18 taking up at least one, and preferably at least two layers 1, 2, 4 of bamboo rods 5. The brackets 18 may also have a thickness substantially equal to the total thickness of the panel, and recover on all layers 1, 2, 4 of bamboo rods 5.
- Fig. 5 also presents an alternative or complementary solution to the elasticity of the bamboo rods 5 to facilitate the collective resistance of the bamboo rods 5 of a layer 1, 2, 4.
- a mortar edge 19 is arranged around the perimeter of the panel. glue.
- Such adhesive mortar has the characteristic of being both elastic and resistant. This allows to take the differences in length of the bamboo rods 5, and to distribute the efforts on all the edge 19 of the panel.
- Such a song 19 can also be made of wood, thus forming a wooden frame of calibrated outer dimensions, the distribution of efforts between the bamboo rods 5 then being treated differently.
- the panel according to the invention then gives mechanical and thermal properties much better than a panel only wood.
- Such a song 19 may also be expanded polyethylene, also elastic material, in which the ends of bamboo rods 5 sink more or less, thus taking up the tolerances of lengths of bamboo rods 5.
- the panels according to the invention may have dimensions adapted for the construction of a building wall, while remaining advantageously below the limits of dimensions transportable on a truck.
- panels of 2 x 3m or 2 x 6m can be provided. It is also possible to provide prefabrication in the form of a single panel the size of a complete wall of a building.
- the advantage of the present invention lies in particular in that the panel according to the invention is resistant to compression in both directions, length and width, and squareness, and can therefore be used as a structural panel for a wall of building, not just as a filler panel.
- a wall can be built exclusively with such panels, which allows a simplified construction, with lightweight panels having both good mechanical characteristics, and good thermal and sound resistance.
- the presence of the thin plates 7, or gypsum board or cement, makes it possible to confer a finished appearance to the panel which therefore does not require lining, and if appropriate with appropriate treatment, no external coating either.
- first layer 1, second layer 2, filling layer 3 and fourth layer 4 is described in this order. However they may be arranged in a different order, and in addition a panel may comprise a first 1, second 2, and fourth layer 4, without having a filling layer, or comprise the layers 1 and 2 only, or the layers 1, 2 and 3 only. According to the invention, it must comprise at least two layers such as the first layer 1 and second layer 2, the bamboo rods 5 of which are perpendicular to those of the first layer 1.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Textile Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention concerns a panel comprising at least a first layer (1) of bamboo rods (5) parallel to each other and a second layer (2) of bamboo rods (5) parallel to each other, the bamboo rods (5) of the second layer (2) being substantially perpendicular to the bamboo rods (5) of the first layer (1). The invention also concerns a method for producing such a panel.
Description
Panneau pour murs de bâtiments à base de tiges de bambou Panel for building walls made of bamboo stems
L'invention concerne le domaine de la construction de bâtiments, et concerne plus particulièrement un panneau constitutif de murs pour bâtiments. The invention relates to the field of building construction, and more particularly relates to a component panel of walls for buildings.
Le domaine de la construction de bâtiments est un très gros consommateur de ciment. I l est en cela responsable de grandes quantités d'émission de gaz carbonique produites, ainsi que de sources d'énergie consommées à l'occasion de la fabrication du ciment. The field of building construction is a very large consumer of cement. It is responsible for large quantities of carbon dioxide emissions produced, as well as energy sources consumed during the manufacture of cement.
Des matériaux alternatifs ont été proposés, plus conformes à un développement durable. Par exemple le bois est de plus en plus utilisé. Quand il est exploité avec plantation systématique de jeunes arbres pour chaque arbre abattu, le bois est un matériau durable. De plus il permet d'obtenir des constructions plus légères que le béton. Alternative materials have been proposed, more in line with sustainable development. For example, wood is more and more used. When it is harvested with systematic planting of young trees for every tree felled, wood is a sustainable material. In addition it allows to obtain lighter constructions than concrete.
Néanmoins le bois, quoique plus léger que le béton, reste un matériau lourd. Par ailleurs, son exploitation durable est contraignante. Le temps de pousse d'un arbre est en général de 30 ans sous nos latitudes et de plus de 60 ans dans les forêts du nord de l'Europe. Nevertheless, wood, although lighter than concrete, remains a heavy material. Moreover, its sustainable exploitation is binding. The growth time of a tree is usually 30 years in our latitudes and more than 60 years in the forests of northern Europe.
Le document DE196 10 247 divulgue un panneau fait à partir de pellet, tiges ou fibres liés par un liant. Ces tiges ou fibres peuvent venir de fleurs de tournesol. Néanmoins ces panneaux se limitent à un usage de revêtement, et n'ont de caractéristique mécanique que celle du liant renforcé de fibres. DE196 10 247 discloses a panel made from pellet, rods or fibers bonded by a binder. These stems or fibers can come from sunflower flowers. However, these panels are limited to a coating use, and have a mechanical characteristic that of the binder reinforced with fibers.
Le document US2 369 006 divulgue une structure faite de tubes calibrés assemblés sur le modèle des structures en nid d'abeille. Le document cite le bambou comme matière première possible, mais la solution ne peut pas fonctionner avec des bambous naturels, de diamètre variable le long de la longueur des tiges de bambou et avec des différences de diamètre d'une tige de bambou à l'autre. US2,369,006 discloses a structure made of calibrated tubes assembled on the model of honeycomb structures. The document cites bamboo as a possible raw material, but the solution can not work with natural bamboo, of varying diameter along the length of the bamboo stems and with differences in diameter from one bamboo stem to another .
La présente invention se propose de remédier à au moins une partie des inconvénients précités et propose une solution qui permette d'utiliser des tiges de bambou dans un panneau de sorte à conférer au panneau les caractéristiques de tenue mécanique des tiges de bambou, en plus de leurs caractéristiques d'isolation thermique. The present invention proposes to remedy at least some of the aforementioned disadvantages and proposes a solution that allows the use of bamboo rods in a panel so as to confer on the panel the characteristics of mechanical strength of the bamboo rods, in addition to their thermal insulation characteristics.
A cet effet, l'invention concerne un panneau comportant au moins une première couche de tiges de bambou parallèles entre eux et une deuxième couche de tiges de
bambou parallèles entre eux. Ce panneau est particulier en ce que les tiges de bambou de la deuxième couche sont sensiblement perpendiculaires aux tiges de bambou de la première couche. For this purpose, the invention relates to a panel comprising at least a first layer of bamboo rods parallel to each other and a second layer of rods of bamboo parallel to each other. This panel is particular in that the bamboo stems of the second layer are substantially perpendicular to the bamboo stems of the first layer.
Grâce à ces dispositions, le panneau selon l'invention peut être coupé sur chantier, pour s'adapter à la dimension réelle du bâtiment à construire, tant pour la longueur que pour la largeur, et on peut y découper des ouvertures pour une porte ou une fenêtre. Thanks to these provisions, the panel according to the invention can be cut on site, to adapt to the actual size of the building to be built, both for the length and for the width, and it is possible to cut openings for a door or a window.
Selon d'autres caractéristiques : According to other characteristics:
- les tiges de bambou des première et deuxième couche peuvent être d'un seul tenant sur toute la longueur, respectivement largeur du panneau ; cette caractéristique permet de conférer au panneau une résistance mécanique à la compression dans le sens de sa longueur et de sa largeur, le panneau devenant par là un panneau structurel, apte à constituer un mur d'un bâtiment et à soutenir un toit, - The bamboo rods of the first and second layer can be in one piece over the entire length, respectively width of the panel; this characteristic makes it possible to confer on the panel a compressive strength in the direction of its length and its width, the panel thereby becoming a structural panel, suitable for constituting a wall of a building and supporting a roof,
- ledit panneau peut comprendre des tiges de bambou constituées d'un aboutage de plusieurs morceaux de tiges de bambou brut, permettant ainsi une utilisation d'un maximum de tiges de bambou brut avec un minimum de chutes, - said panel may comprise bamboo rods consisting of a score of several pieces of raw bamboo rods, thus allowing the use of a maximum of raw bamboo stems with a minimum of falls,
- lesdites tiges de bambou peuvent comporter un tourillon d'assemblage au niveau de chaque assemblage, permettant un assemblage fiable et solide, said bamboo rods may comprise an assembly trunnion at each assembly, allowing a reliable and solid assembly,
- ledit panneau peut comprendre en outre une couche de remplissage constituée substantiellement de fibres et/ou laine de bambou ou autre laine végétale, reliées par un liant ; une telle disposition permet d'améliorer les qualités thermiques du panneau, et peut permettre de loger des conduites de fluides ou d'électricité, said panel may further comprise a filler layer consisting substantially of fibers and / or bamboo wool or other vegetable wool, connected by a binder; such an arrangement improves the thermal qualities of the panel, and can accommodate fluid conduits or electricity,
- ledit panneau peut comprendre une couche de tiges de bambou disposées obliques par rapport aux tiges de bambou de ladite première couche, permettant ainsi une garantie de l'équerrage du panneau . Une autre couche de tiges de bambou obliques croisant ladite couche peut être disposée pour reprendre les efforts d'équerrage dans les deux sens, tout en maintenant l'avantage de pouvoir couper le panneau à longueur ou d'y découper des ouvertures de porte et fenêtre,said panel may comprise a layer of bamboo rods arranged obliquely with respect to the bamboo rods of said first layer, thus making it possible to guarantee the squareness of the panel. Another layer of oblique bamboo rods crossing said layer may be arranged to take up the squaring efforts in both directions, while maintaining the advantage of being able to cut the panel to length or to cut door and window openings therein. ,
- ledit panneau peut comprendre deux tirants disposés selon les deux diagonales dudit panneau, de sorte à en maintenir l'équerrage, de tels tirants pouvant être disposés dans une couche de remplissage, le cas échéant, et peuvent être des câbles,
- ledit panneau peut comprendre au moins une aiguille, débouchante sur une face externe dudit panneau et traversant au moins une couche dudit panneau, ladite aiguille étant agencée pour pouvoir y injecter un liant ou une résine, et percée latéralement de sorte à répandre le dit liant ou ladite résine dans une autre couche plus éloignée de ladite face externe ; cette caractéristique permet d'améliorer la répartition du liant ou de la résine, et permet aussi de lier les couches entre elles ; plusieurs aiguilles peuvent être réparties sur la surface du panneau said panel may comprise two tie-rods arranged along the two diagonals of said panel, so as to maintain the squareness thereof, such tie rods being able to be arranged in a filling layer, where appropriate, and may be cables, said panel may comprise at least one needle emerging on an external face of said panel and passing through at least one layer of said panel, said needle being arranged to be able to inject a binder or a resin, and pierced laterally so as to spread said binder or said resin in another layer further away from said outer face; this characteristic makes it possible to improve the distribution of the binder or the resin, and also makes it possible to bind the layers together; several needles can be spread across the panel surface
- ledit panneau peut comporter un chant élastique de sorte à répartir les efforts entre les tiges de bambou, par exemple constitué de mortier colle ou de polyéthylène expansé. - The said panel may comprise an elastic edge so as to distribute the forces between the bamboo rods, for example consisting of adhesive mortar or expanded polyethylene.
La présente invention concerne encore un procédé de fabrication d'un panneau selon l'invention, comprenant les étapes suivantes : The present invention further relates to a method of manufacturing a panel according to the invention, comprising the following steps:
- introduction d'une tige de bambou brut dans une ligne de sélection - introduction of a raw bamboo stem into a selection line
- mesure du diamètre le long de la longueur de ladite tige de bambou brut - comparaison dudit diamètre à un diamètre de consigne measuring the diameter along the length of said raw bamboo rod - comparing said diameter with a set diameter
- coupe de la tige dès que ledit diamètre passe sous ledit diamètre de consigne cutting the rod as soon as said diameter passes under said setpoint diameter
- utilisation de l'assemblage obtenu dans la fabrication dudit panneau - use of the assembly obtained in the manufacture of said panel
Selon un mode avantageux de réalisation de l'invention, on peut y ajouter les étapes suivantes : According to an advantageous embodiment of the invention, the following steps can be added:
- introduction d'une deuxième tige - introduction of a second rod
- calibrage du creux interne des extrémités des deux tiges - calibration of the inner hollow of the ends of the two stems
- assemblage des deux tiges par introduction d'un tourillon, de préférence collé. - Assembling the two rods by introducing a trunnion, preferably glued.
- utilisation de l'assemblage obtenu dans la fabrication dudit panneau. - Use of the assembly obtained in the manufacture of said panel.
Un tel procédé permet une utilisation optimale des tiges de bambou brut récoltées, et de réduire à la fois les différences d'épaisseur d'une couche, et les chutes. Such a process allows for optimal use of harvested raw bamboo stems, and to reduce both layer thickness differences and falls.
L'avantage découlant de la présente invention consiste en ce qu'elle rend possible de réaliser un panneau à partir de bambou, et donc par une exploitation durable des ressources naturelles, qui présente des caractéristiques mécaniques et thermiques remarquables. La facilité d'adaptation aux contraintes géométriques d'un bâtiment sont également faciles à respecter de par la souplesse d'adaptation de tels panneaux.
D'autres caractéristiques et avantages de l'invention ressortiront de la description détaillée qui va suivre se rapportant à un exemple de réalisation donné à titre indicatif et non limitatif. The advantage of the present invention is that it makes it possible to make a panel from bamboo, and therefore by a sustainable exploitation of natural resources, which has remarkable mechanical and thermal characteristics. The ease of adaptation to the geometric constraints of a building are also easy to respect by the flexibility of adaptation of such panels. Other features and advantages of the invention will emerge from the following detailed description relating to an exemplary embodiment given by way of indication and not limitation.
La compréhension de cette description sera facilitée en se référant aux dessins joints, dans lesquels : The understanding of this description will be facilitated with reference to the accompanying drawings, in which:
la figure 1 représente une vue avant en perspective d'un panneau selon l'invention ; la figure 2 représente une vue schématique d'une machine intervenant dans la fabrication du panneau de la fig. 1 ; Figure 1 shows a perspective front view of a panel according to the invention; FIG. 2 represents a schematic view of a machine involved in the manufacture of the panel of FIG. 1;
- la figure 3 représente un détail d'un mode particulier de réalisation du panneau de la fig. 1 ; FIG. 3 represents a detail of a particular embodiment of the panel of FIG. 1;
la figure 4 représente une vue en plan d'un mode particulier de réalisation du panneau de la fig. 1 ; FIG. 4 represents a plan view of a particular embodiment of the panel of FIG. 1;
la figure 5 représente une vue en plan d'un autre mode de réalisation du panneau de la fig. 1 ; FIG. 5 shows a plan view of another embodiment of the panel of FIG. 1;
Tel que représenté à la fig. 1 , un mode préféré de réalisation de la présente invention concerne un panneau comportant une première couche 1 de tiges de bambou 5 sensiblement parallèles entre eux, une deuxième couche 2 de tiges de bambou 5 sensiblement parallèles entre eux, et perpendiculaires à celles de la première couche 1 , une couche de remplissage 3 avec des fibres de bambou et/ou de la laine de bambou, et/ou d'autres matériaux de remplissage, et une quatrième couche 4 de tiges de bambou. Le panneau est recouvert de part et d'autre par une dalle fine 6, pouvant être composée de profilés usinés en bambou, ou de bois ou plastique, pour donner une apparence finie au panneau. Pour des raisons de clarté, les dalles fines 6 du dessus sont représentées en transparence dans la fig. 1 . As shown in FIG. 1, a preferred embodiment of the present invention relates to a panel having a first layer 1 of bamboo rods 5 substantially parallel to each other, a second layer 2 of bamboo rods 5 substantially parallel to each other, and perpendicular to those of the first layer 1, a filler layer 3 with bamboo fibers and / or bamboo wool, and / or other filler materials, and a fourth layer 4 of bamboo stems. The panel is covered on both sides by a thin slab 6, which can be made of machined profiles of bamboo, or wood or plastic, to give a finished appearance to the panel. For the sake of clarity, the thin slabs 6 of the top are shown in transparency in FIG. 1.
De telles dalles fines 6 peuvent aussi être remplacées par une plaque de plâtre ou de ciment, ou encore du ciment d'un côté et du plâtre de l'autre, selon les finitions et les caractéristiques externes souhaitées. Such thin slabs 6 may also be replaced by a plasterboard or cement, or cement on one side and plaster on the other, depending on the finishes and external characteristics desired.
Un liant 7 est disposé entre les tiges de bambou 5, pour les maintenir entre eux, et pour le maintien des couches entre elles. Le liant peut être par exemple un béton végétal, par exemple avec du chanvre, présentant de bonnes caractéristiques thermiques. On peut prévoir de constituer le panneau avec les tiges de bambou 5, puis
de le plonger dans un tel béton, puis de laisser prendre le béton, fixant ainsi l'ensemble du panneau. A binder 7 is disposed between the bamboo rods 5, to hold them together, and for the maintenance of the layers between them. The binder may be for example a plant concrete, for example with hemp, having good thermal characteristics. It is possible to form the panel with the bamboo rods 5, then to immerse him in such a concrete, then let the concrete take hold, thus fixing the whole panel.
Le liant peut aussi être une résine, qui peut être projetée au pistolet sur le panneau constitué des tiges de bambou 5. On peut alors placer le panneau dans une presse pendant la polymérisation de la résine, pour une bonne mise en place des couches 1 , 2, 4 les unes par rapport aux autres. The binder can also be a resin, which can be sprayed onto the panel consisting of bamboo rods 5. The panel can then be placed in a press during the polymerization of the resin, for a good setting up of the layers 1, 2, 4 in relation to each other.
Selon un mode particulier de réalisation de l'invention, on peut prévoir en un ou plusieurs endroits du panneau de disposer une aiguille traversant les diverses couches 1 , 2, 3, 4, et utilisée pour injecter de la résine. Ceci permet d'apporter un maintien supplémentaire entre les couches 1 , 2, 3, 4, en plus du liant. Une telle aiguille peut par exemple être un morceau de tige de bambou, percé latéralement ; on peut ainsi injecter de la résine par l'extrémité du morceau de tige, et celle-ci se disperse dans les couches 1 , 2, 3, 4 aux environs du morceau de tige, et assure ainsi la liaison entre les couches 1 , 2, 3, 4. According to a particular embodiment of the invention, provision can be made in one or more places of the panel to have a needle passing through the various layers 1, 2, 3, 4, and used to inject resin. This makes it possible to provide additional support between the layers 1, 2, 3, 4, in addition to the binder. Such a needle may for example be a piece of bamboo rod, pierced laterally; it is thus possible to inject resin through the end of the piece of rod, and this rod is dispersed in the layers 1, 2, 3, 4 around the piece of rod, and thus ensures the connection between the layers 1, 2 , 3, 4.
Le même procédé par aiguille peut être utilisé pour injecter le liant entre les tiges de bambou 5, et entre les couches 1 , 2, 3, 4. The same needle method can be used to inject the binder between the bamboo rods 5, and between the layers 1, 2, 3, 4.
Une telle aiguille peut aussi être un morceau de tige de bambou, percé pour laisser passer une tige de bambou 5 de chacune des couches 1 , 2, 4 de tiges de bambou 5. Une telle disposition est un peu plus difficile à mettre en œuvre, mais permet d'assurer un lien de très bonne qualité entre les couches 1 , 2, 3, 4. Il convient alors de rogner un peu les tiges adjacentes à celles qui traversent le morceau de tige de bambou, pour laisser la place à la paroi du morceau de tige de bambou. Such a needle may also be a piece of bamboo rod, pierced to let a bamboo stem 5 from each of the layers 1, 2, 4 of bamboo rods 5. Such an arrangement is a little more difficult to implement, but makes it possible to ensure a very good link between the layers 1, 2, 3, 4. It is then advisable to cut a little bit the rods adjacent to those which cross the piece of bamboo rod, to leave room for the wall piece of bamboo stalk.
Pour l'introduction de l'aiguille, on peut prévoir de percer le panneau, de préférence selon un diamètre de perçage plus petit que le diamètre des tiges de bambou 5 constituant les couches 1 , 2, 4 du panneau, pour éviter de sectionner complètement l'une des tiges de bambou du panneau. For the introduction of the needle, it is possible to drill the panel, preferably according to a drilling diameter smaller than the diameter of the bamboo rods constituting the layers 1, 2, 4 of the panel, to avoid cutting completely. one of the bamboo stems of the panel.
Selon un mode préféré de réalisation de l'invention, le liant 7 ne remplit pas complètement les interstices entre les tiges de bambou, mais des espaces sont laissés libres. Ceci permet aux tiges de bambou de se déformer, et ainsi de donner de la souplesse. Ainsi le panneau est apte à reprendre un effort d'appui mécanique, ladite charge se répartissant naturellement sur toutes les tiges de bambou 5 qui sont disposées dans le sens de la charge.
En effet selon un autre mode préféré de réalisation de l'invention, les tiges de bambou 5 sont d'un seul tenant sur toute la longueur du panneau. Ceci leur permet de contribuer à la reprise d'une charge de compression dans le sens de la tige, étant d'un seul tenant entre le point d'application de la charge d'un côté du panneau, et le point d'appui de l'autre côté du panneau. According to a preferred embodiment of the invention, the binder 7 does not completely fill the interstices between the bamboo rods, but spaces are left free. This allows the bamboo stalks to deform and thus provide flexibility. Thus the panel is able to resume a mechanical support force, said load is distributed naturally on all bamboo rods 5 which are arranged in the direction of the load. Indeed according to another preferred embodiment of the invention, the bamboo rods 5 are in one piece over the entire length of the panel. This allows them to contribute to the recovery of a compression load in the direction of the rod, being in one piece between the point of application of the load on one side of the panel, and the fulcrum of the other side of the panel.
Dans le processus de fabrication du panneau , des tiges de bambou brut 8 sont introduites dans une ligne de sélection 9 comportant un moyen de mesure du diamètre 10 tel qu'une caméra ou un palpeur, ainsi qu'un moyen de coupe 1 1 tel qu'une scie. In the manufacturing process of the panel, raw bamboo rods 8 are introduced into a selection line 9 comprising a diameter measuring means 10 such as a camera or a probe, and a cutting means 11 such that 'a saw.
On coupe alors les parties de tige de bambou brut 8 présentant des diamètres extérieurs trop différents, et on aboute les morceaux de tige de bambou brut 8 présentant des diamètres extérieurs suffisamment proches. Des diamètres extérieurs entre 20 et 25mm, entre 25 et 30mm, entre 30 et 40mm, et entre 40 et 50mm peuvent par exemple être prévus. Pour une tige de bambou brut 8 dont le diamètre extérieur est sur une partie de sa longueur entre 25 et 30mm, et qui présente des parties de tige de bambou brut 8 de diamètre inférieur à 25mm, ces parties sont coupées, et aboutées à des tiges de bambou brut 8 de diamètre compris entre 20 et 25mm. The portions of the raw bamboo rod 8 having too many outside diameters are then cut, and the pieces of raw bamboo rod 8 having outer diameters sufficiently close to each other are abutted. External diameters between 20 and 25mm, between 25 and 30mm, between 30 and 40mm, and between 40 and 50mm may for example be provided. For a raw bamboo rod 8 whose outer diameter is over a part of its length between 25 and 30mm, and which has portions of raw bamboo rod 8 of diameter less than 25mm, these parts are cut, and butted to rods raw bamboo 8 diameter between 20 and 25mm.
L'aboutage de deux parties de tiges de bambou brut 8 se fait par sciage des deux extrémités 12, calibrage du creux interne 13, puis introduction d'un tourillon 14 dans le creux calibré de chacune des extrémités 12, et collage dudit tourillon 14, qui peut aussi être réalisé en bambou calibré de diamètre inférieur. Fitting two pieces of raw bamboo rods 8 is done by sawing the two ends 12, calibrating the internal hollow 13, then introducing a trunnion 14 into the calibrated recess of each of the ends 12, and bonding said trunnion 14, which can also be made of calibrated bamboo of smaller diameter.
Un tel procédé permet de disposer de tiges de bambou 5 de toute longueur, par exemple jusqu'à 2, 3, ou même 6 mètres de long, avec un diamètre dans la même gamme sur toute la longueur. Such a method provides bamboo rods 5 of any length, for example up to 2, 3, or even 6 meters long, with a diameter in the same range over the entire length.
On considère dans le cadre de la présente invention qu'une tige de bambou brut 8 est une tige de bambou avant découpe et assemblage, et qu'une tige de bambou 5 est une tige prête à l'emploi dans un panneau selon l'invention, le cas échéant après assemblage de plusieurs morceaux de tiges de bambou brut 8. In the context of the present invention, it is considered that a raw bamboo stem 8 is a bamboo rod before cutting and assembly, and that a bamboo rod 5 is a rod ready for use in a panel according to the invention. , where appropriate after assembly of several pieces of raw bamboo stems 8.
On peut alors obtenir des panneaux comportant une première couche 1 de bambous avec des tiges de bambou 5 d'un seul tenant sur toute la longueur du panneau, et d'épaisseur sensiblement constante, du moins comprise dans la même gamme d'épaisseur, par exemple définie sur une plage de 5 mm comme ci-dessus. La deuxième couche 2 peut alors être constituée de tiges de bambou 5 d'un seul tenant sur toute la largeur du panneau, et d'épaisseur également sensiblement constante,
ladite épaisseur pouvant être différente d'une couche à l'autre. La quatrième couche 4 peut être constituée dans le sens de la première couche 1 ou de la deuxième couche 2, ou encore on peut prévoir une cinquième couche avec des tiges de bambou 5 disposées perpendiculaires à celles de la quatrième couche 4. La couche de remplissage 3 permet d'une part d'absorber d'éventuelles surépaisseurs des couches 1 , 2 et 4, et d'éviter que celles-ci se reportent vers l'extérieur du panneau. La couche de remplissage 3 permet également d'apporter une isolation thermique et/ou phonique supplémentaire, ainsi que de garantir l'étanchéité du panneau à l'air. En effet le liant entre les tiges de bambou 5 ne suffit pas à garantir une telle étanchéité. Il est en effet assez difficile, et coûteux, d'arriver à remplir complètement les interstices entre les tiges de bambou 5. De plus, comme indiqué ci-dessus, il peut être avantageux de ne pas remplir complètement lesdits interstices, et de laisser des espaces libres, pour permettre un peu de mouvement des tiges et leur donner un peu d'élasticité. Cela permet auxdites tiges par flambage d'adapter légèrement leurs longueurs, et de permettre une résistance collective des tiges à la compression en longueur du panneau. We can then obtain panels comprising a first layer 1 of bamboo with bamboo rods 5 in one piece over the entire length of the panel, and of substantially constant thickness, at least within the same range of thickness, by example defined over a range of 5 mm as above. The second layer 2 can then consist of bamboo rods 5 in one piece over the entire width of the panel, and also of substantially constant thickness, said thickness being able to be different from one layer to another. The fourth layer 4 may be formed in the direction of the first layer 1 or the second layer 2, or a fifth layer may be provided with bamboo rods 5 arranged perpendicularly to those of the fourth layer 4. The filling layer 3 allows on the one hand to absorb any extra thicknesses of the layers 1, 2 and 4, and to prevent them from moving towards the outside of the panel. The filling layer 3 also makes it possible to provide additional thermal and / or sound insulation, as well as to guarantee the airtightness of the panel. Indeed the binder between the bamboo rods 5 is not sufficient to ensure such a seal. It is quite difficult and expensive to completely fill the interstices between the bamboo rods. Moreover, as indicated above, it may be advantageous not to completely fill said gaps, and free spaces, to allow a little movement of the stems and give them a little elasticity. This allows said rods by buckling to slightly adapt their lengths, and to allow a collective resistance of the rods to compression in length of the panel.
La présence de la deuxième couche 2, avec des tiges de bambou 5 perpendiculaires à celles de la première couche 1 , permet d'une part de conférer au panneau la possibilité de le couper à longueur, ou d'y découper des ouvertures pour une porte ou un fenêtre ; elle permet d'autre par, en particulier dans la variante des tiges de bambou 5 en un seul tenant, de conférer au panneau une résistance à la compression dans le sens de la largeur, considérée ici comme étant le sens des tiges de bambou 5 de la deuxième couche 2. Ainsi la disposition perpendiculaire des tiges de la deuxième couche 2 par rapport à celles de la première couche 1 permet d'obtenir un panneau résistant à la compression dans les deux directions du plan du panneau, longueur et largeur. The presence of the second layer 2, with bamboo rods 5 perpendicular to those of the first layer 1, allows on the one hand to give the panel the ability to cut to length, or to cut openings for a door or a window; it allows further by, especially in the variant of bamboo rods 5 in one piece, to confer on the panel a compressive strength in the width direction, considered here as being the direction of the bamboo rods 5 of the second layer 2. Thus the perpendicular arrangement of the rods of the second layer 2 relative to those of the first layer 1 provides a panel resistant to compression in both directions of the panel plane, length and width.
Pour assurer la tenue de l'équerrage du panneau, on peut disposer dans au moins l'une des couches 1 , 2, 4 suffisamment de liant pour empêcher les tiges de bambou 5 de glisser longitudinalement l'une par rapport à l'autre. Cette couche assure alors la tenue de l'équerrage de tout le panneau. To maintain the squareness of the panel, it is possible to have in at least one of the layers 1, 2, 4 sufficient binder to prevent the bamboo rods 5 from sliding longitudinally with respect to each other. This layer then ensures the keeping of the squareness of the entire panel.
Une autre solution, représentée à la fig. 4, consiste à disposer, par exemple dans la quatrième couche 4, les tiges de bambou inclinées 15 par rapport à la longueur du panneau, ainsi que le cas échéant, selon la quantité et efficacité du liant, dans une couche complémentaire, des tiges de bambou inclinées en sens contraire 16. Ces tiges de bambou 15, 16 croisées résistant à la compression dans le sens de leur
longueur interdisent toute déformation hors équerre du panneau. On peut aussi prévoir une liaison particulière, par exemple par résine, en extrémités des tiges de bambou 15, permettant leur sollicitation en traction, et d'éviter une couche complémentaire de tiges de bambou 16. L'inclinaison peut être d'une vingtaine de degrés, comme illustré à la fig. 4, mais elle peut aussi être plus forte, jusqu'à 45° et au-delà. Another solution, shown in FIG. 4, consists in arranging, for example in the fourth layer 4, the bamboo rods inclined with respect to the length of the panel, as well as, if appropriate, depending on the quantity and effectiveness of the binder, in a complementary layer, Bamboo stems 15, 16 cross-cut resisting in the direction of their length prohibit any deformation outside the panel. It is also possible to provide a particular connection, for example by resin, at the ends of the bamboo rods 15, allowing their tensile stress, and to avoid a complementary layer of bamboo rods 16. The inclination may be about twenty degrees, as shown in fig. 4, but it can also be stronger, up to 45 ° and beyond.
Une telle solution permet de disposer de panneaux qu'on peut sans inconvénient découper à longueur sur le site de montage du panneau, ainsi que découper des ouvertures pour les portes ou fenêtres. Le cas échéant on pourra prévoir la mise en place d'une résine au niveau des découpes effectuées. Such a solution makes it possible to have panels that can be easily cut to length on the assembly site of the panel, as well as to cut openings for doors or windows. If necessary we can provide the establishment of a resin at the cuts made.
Pour éviter l'ajustage et la coupe en biseau des tiges de bambou en leurs extrémité, on peut prévoir lors de la fabrication de la quatrième couche 4, de disposer des tiges plus longues, puis de couper le contour de la quatrième couche 4, ou encore de ne couper les sur-longueurs qu'une fois les couches 1 , 2, 3, 4 assemblées, en coupant le panneau complet. Une telle solution permet également de faciliter l'égalité des longueurs des tiges de bambou 5 des autres couches 1 , 2, et contribue à permettre un travail de résistance de toutes les tiges de bambou 5 en même temps. To avoid adjustment and bevel cutting bamboo rods at their ends, can be provided during the manufacture of the fourth layer 4, to have the longer rods, then to cut the outline of the fourth layer 4, or again to cut the over-lengths only once the layers 1, 2, 3, 4 assembled, by cutting the complete panel. Such a solution also makes it easier to equal the lengths of the bamboo stems of the other layers 1, 2, and contributes to the resistance work of all the bamboo stems 5 at the same time.
Une autre solution encore, représentée à la fig. 5, consiste à disposer deux câbles ou tirants 17 dans les deux diagonales du panneau, et quatre équerres 18, l'une dans chaque coin du panneau. Ces tirants 17 sont résistants en traction, et interdisent ainsi toute déformation hors équerre du panneau. De tels câbles ou tirants 17 peuvent être disposés par exemple dans la couche de remplissage 3 et sont alors invisibles, les équerres 18 se reprenant sur au moins une, et de préférence au moins deux couches 1 , 2, 4 de tiges de bambou 5. Les équerres 18 peuvent aussi présenter une épaisseur sensiblement égale à l'épaisseur totale du panneau, et se reprendre sur toutes les couches 1 , 2, 4 de tiges de bambou 5. Yet another solution, shown in FIG. 5, consists of arranging two cables or tie rods 17 in the two diagonals of the panel, and four brackets 18, one in each corner of the panel. These tie rods 17 are tensile strength, and thus prohibit deformation off the square of the panel. Such cables or rods 17 may be arranged for example in the filling layer 3 and are then invisible, the brackets 18 taking up at least one, and preferably at least two layers 1, 2, 4 of bamboo rods 5. The brackets 18 may also have a thickness substantially equal to the total thickness of the panel, and recover on all layers 1, 2, 4 of bamboo rods 5.
Cette dernière solution présente toutefois l'inconvénient de rendre impossible une découpe sur chantier du panneau pour en adapter précisément les dimensions, ainsi que des découpes d'ouvertures pour fenêtres et portes du bâtiment. This latter solution, however, has the disadvantage of making it impossible to cut on the site of the panel to precisely adjust the dimensions, as well as cutouts of openings for windows and doors of the building.
La fig. 5 présente également une solution alternative ou complémentaire à l'élasticité des tiges de bambou 5 pour faciliter la résistance collective des tiges de bambou 5 d'une couche 1 , 2, 4. On a disposé sur le pourtour du panneau un chant 19 en mortier colle. Un tel mortier colle présente la caractéristique d'être à la fois élastique et résistant. Cela permet de reprendre les différences de longueur des tiges de bambou 5, et d'en répartir les efforts sur tout le chant 19 du panneau. Un tel chant 19 peut aussi
être en bois, formant ainsi un cadre en bois, de dimensions extérieures calibrées, la répartition des efforts entre les tiges de bambou 5 étant alors traitée autrement. Le panneau selon l'invention confère alors des propriétés mécaniques et thermiques bien supérieures à un panneau seulement en bois. Un tel chant 19 peut encore être en polyéthylène expansé, matériau également élastique, dans lequel les extrémités de tiges de bambou 5 s'enfoncent plus ou moins, reprenant ainsi les tolérances de longueurs des tiges de bambou 5. Fig. 5 also presents an alternative or complementary solution to the elasticity of the bamboo rods 5 to facilitate the collective resistance of the bamboo rods 5 of a layer 1, 2, 4. A mortar edge 19 is arranged around the perimeter of the panel. glue. Such adhesive mortar has the characteristic of being both elastic and resistant. This allows to take the differences in length of the bamboo rods 5, and to distribute the efforts on all the edge 19 of the panel. Such a song 19 can also be made of wood, thus forming a wooden frame of calibrated outer dimensions, the distribution of efforts between the bamboo rods 5 then being treated differently. The panel according to the invention then gives mechanical and thermal properties much better than a panel only wood. Such a song 19 may also be expanded polyethylene, also elastic material, in which the ends of bamboo rods 5 sink more or less, thus taking up the tolerances of lengths of bamboo rods 5.
En alternative, on peut prévoir de disposer un ressort ou un autre système élastique sur chaque extrémité de tige de bambou 5, remplissant une fonction similaire. Alternatively, provision may be made to provide a spring or other elastic system on each end of bamboo rod 5, performing a similar function.
Les panneaux selon l'invention pourront présenter des dimensions adaptées pour la construction d'un mur de bâtiment, tout en restant avantageusement en dessous des limites de dimensions transportables sur un camion. On peut par exemple proposer des panneaux de 2 x 3m, ou 2 x 6m. On peut aussi prévoir la préfabrication sous forme d'un seul panneau de la taille d'un mur complet d'un bâtiment. The panels according to the invention may have dimensions adapted for the construction of a building wall, while remaining advantageously below the limits of dimensions transportable on a truck. For example, panels of 2 x 3m or 2 x 6m can be provided. It is also possible to provide prefabrication in the form of a single panel the size of a complete wall of a building.
Toutefois on peut aussi proposer des dimensions beaucoup plus petites, comme 200 x 300mm par exemple, ces panneaux formant alors des briques utilisables pour construire un mur de n'importe quelle dimension. On peut alors prévoir des briques standard, de dimensions figées, avec par exemple les solutions décrites ci-dessus ne permettant pas une recoupe du panneau comme l'équerrage maintenu par câbles 17 ou les chants 19 en mortier colle, et par ailleurs des briques ajustables, par exemple avec une quatrième couche 4 de tiges de bambou inclinées 15, ou avec plus de liant ou un liant plus performant pour maintenir l'équerrage. However we can also offer much smaller dimensions, such as 200 x 300mm, these panels then forming bricks used to build a wall of any size. It is then possible to provide standard bricks of fixed dimensions, for example with the solutions described above that do not allow the panel to be cut in the same way as the squareness maintained by cables 17 or the edges 19 in adhesive mortar, and moreover, adjustable bricks. , for example with a fourth layer 4 of inclined bamboo rods 15, or with more binder or a binder more efficient to maintain the squareness.
L'avantage de la présente invention réside en particulier en ce que le panneau selon l'invention résiste à la compression dans les deux directions, longueur et largeur, ainsi qu'en équerrage, et peut donc être utilisé comme panneau structurel pour un mur de bâtiment, et pas seulement comme panneau de remplissage. Un mur peut être construit exclusivement avec de tels panneaux, ce qui permet une construction simplifiée, avec des panneaux légers présentant à la fois de bonnes caractéristiques mécaniques, et une bonne résistance thermique et sonore. La présence des plaques fines 7, ou de plaques de plâtre ou de ciment, permet de conférer un aspect fini au panneau qui ne nécessite donc pas de revêtement intérieur, et le cas échéant moyennant un traitement approprié, pas de revêtement extérieur non plus. The advantage of the present invention lies in particular in that the panel according to the invention is resistant to compression in both directions, length and width, and squareness, and can therefore be used as a structural panel for a wall of building, not just as a filler panel. A wall can be built exclusively with such panels, which allows a simplified construction, with lightweight panels having both good mechanical characteristics, and good thermal and sound resistance. The presence of the thin plates 7, or gypsum board or cement, makes it possible to confer a finished appearance to the panel which therefore does not require lining, and if appropriate with appropriate treatment, no external coating either.
Dans la description ci-dessus, la disposition des première couche 1 , deuxième couche 2, couche de remplissage 3 et quatrième couche 4 est décrite dans cet ordre. Toutefois
elles peuvent être disposées dans un ordre différent, et de plus un panneau peut comporter une première 1 , deuxième 2, et quatrième couche 4, sans comporter de couche de remplissage, ou comporter les couches 1 et 2 seulement, ou les couches 1 , 2 et 3 seulement. Selon l'invention, il doit comporter au moins deux couches telles que les première couche 1 et deuxième couche 2 dont les tiges de bambou 5 sont perpendiculaires à celles de la première couche 1 . In the above description, the arrangement of the first layer 1, second layer 2, filling layer 3 and fourth layer 4 is described in this order. However they may be arranged in a different order, and in addition a panel may comprise a first 1, second 2, and fourth layer 4, without having a filling layer, or comprise the layers 1 and 2 only, or the layers 1, 2 and 3 only. According to the invention, it must comprise at least two layers such as the first layer 1 and second layer 2, the bamboo rods 5 of which are perpendicular to those of the first layer 1.
Nomenclature Nomenclature
1 . première couche 1. first layer
2. deuxième couche 2. second layer
3. couche de remplissage 3. filling layer
4. quatrième couche 4. fourth layer
5. tige de bambou 5. bamboo stem
6. plaque fine 6. thin plate
7. liant 7. binder
8. tige de bambou brut 8. raw bamboo stem
9. ligne de sélection 9. selection line
10. moyen de mesure 10. way of measurement
1 1 . moyen de coupe 1 1. cutting medium
12. extrémités 12. ends
13. creux 13. hollow
14. tourillon 14. trunnion
15. tige de bambou inclinée 15. inclined bamboo stem
16. tige de bambou inclinée 16. inclined bamboo stem
17. câble 17. cable
18. équerre 18. square
19. chant
19. singing
Claims
REVENDICATIONS
Panneau comportant au moins une première couche (1 ) de tiges de bambou (5) parallèles entre eux et une deuxième couche (2) de tiges de bambou (5) parallèles entre eux, caractérisé en ce que les tiges de bambou (5) de la deuxième couche (2) sont sensiblement perpendiculaires aux tiges de bambou (5) de la première couche (1 ). Panel comprising at least a first layer (1) of bamboo rods (5) parallel to each other and a second layer (2) of bamboo rods (5) parallel to each other, characterized in that the bamboo rods (5) of the second layer (2) is substantially perpendicular to the bamboo stems (5) of the first layer (1).
Panneau selon la revendication précédente, comportant un chant élastique (19) de sorte à répartir les efforts entre les tiges de bambou (5, 15, 16), par exemple constitué de mortier colle ou de polyéthylène expansé. Panel according to the preceding claim, comprising an elastic edge (19) so as to distribute the forces between the bamboo rods (5, 15, 16), for example consisting of adhesive mortar or expanded polyethylene.
Panneau selon l'une des revendications précédentes, dans lequel les tiges de bambou (5) des première (1 ) et deuxième couche (2) sont d'un seul tenant sur toute la longueur, respectivement largeur du panneau. Panel according to one of the preceding claims, wherein the bamboo rods (5) of the first (1) and second layer (2) are in one piece over the entire length, respectively width of the panel.
Panneau selon la revendication précédente, comprenant des tiges de bambou (5) constituées d'un aboutage de plusieurs morceaux de tiges de bambou brut (8), par exemple comportant un tourillon (14) d'assemblage au niveau de chaque aboutage. Panel according to the preceding claim, comprising bamboo rods (5) consisting of a finger joint of several pieces of raw bamboo rods (8), for example having a connecting pin (14) at each finger joint.
Panneau selon l'une des revendications précédentes, comprenant en outre une couche de remplissage (3) constituée substantiellement de fibres et/ou laine de bambou ou autre laine végétale, reliées par un liant. Panel according to one of the preceding claims, further comprising a filling layer (3) consisting substantially of fibers and / or bamboo wool or other vegetable wool, connected by a binder.
Panneau selon l'une des revendications précédentes, comprenant u ne quatrième couche (4) de tiges de bambou (15) disposées obliques par rapport aux tiges de bambou (5) de ladite première couche. Panel according to one of the preceding claims, comprising a fourth layer (4) of bamboo rods (15) arranged obliquely to the bamboo rods (5) of said first layer.
Panneau selon l'une des revendications précédentes, comprenant deux câbles (17) disposés selon les deux diagonales dudit panneau, de sorte à en maintenir l'équerrage. Panel according to one of the preceding claims, comprising two cables (17) arranged along the two diagonals of said panel, so as to maintain the squareness.
Panneau selon l'une des revendications précédentes, comprenant au moins une aiguille, débouchante sur une face externe dudit panneau et traversant au moins une couche (1 , 4) dudit panneau, ladite aiguille étant agencée pour pouvoir y injecter un liant ou une résine, et percée latéralement de sorte à répandre le dit liant ou ladite résine dans une autre couche (2, 4, 1 ) plus éloignée de ladite face externe.
Panel according to one of the preceding claims, comprising at least one needle, emerging on an outer face of said panel and passing through at least one layer (1, 4) of said panel, said needle being arranged to inject a binder or a resin, and piercing laterally so as to spread said binder or said resin in another layer (2, 4, 1) farther from said outer face.
9. Procéd é de fabrication d ' u n pan nea u selon l ' u n e des revend ication s précédentes, comprenant les étapes suivantes : 9. A method of manufacturing a device according to one of the preceding claims, comprising the steps of:
- introduction d'une tige de bambou brut (8) dans une ligne de sélection (9) - introduction of a raw bamboo stem (8) into a selection line (9)
- mesure du diamètre le long de la longueur de ladite tige de bambou brut measuring the diameter along the length of said raw bamboo stalk
(8) (8)
- comparaison dudit diamètre à un diamètre de consigne comparing said diameter with a reference diameter
- coupe de la tige de bambou brut (8) dès que ledit diamètre passe sous ledit diamètre de consigne cutting the raw bamboo stem (8) as soon as said diameter passes under said setpoint diameter
- utilisation des morceaux obtenus comme tige de bambou (5) dans la fabrication dudit panneau. - Use of the pieces obtained as a bamboo rod (5) in the manufacture of said panel.
10. Procédé de fabrication selon la revendication précédente, comprenant en plus les étapes suivantes : 10. The manufacturing method according to the preceding claim, further comprising the following steps:
- préparation selon les étapes précédentes d'une deuxième tige de bambou brut (8) - preparation according to the preceding steps of a second raw bamboo stem (8)
- calibrage du creux interne (13) des extrémités (12) des deux tiges de bambou brut (8) - calibration of the inner hollow (13) of the ends (12) of the two raw bamboo stems (8)
- assemblage des deux tiges de bambou brut (8) par introduction d'un tourillon (14), de préférence collé. - Assembling the two raw bamboo rods (8) by introducing a trunnion (14), preferably glued.
- utilisation de l'assemblage obtenu comme tige de bambou (5) dans la fabrication dudit panneau.
- Use of the assembly obtained as a bamboo rod (5) in the manufacture of said panel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1360847A FR3012830B1 (en) | 2013-11-06 | 2013-11-06 | PANEL FOR BUILDING WALLS BASED ON BAMBOO RODS |
| FRFR1360847 | 2013-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015067898A1 true WO2015067898A1 (en) | 2015-05-14 |
Family
ID=50543108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2014/052830 WO2015067898A1 (en) | 2013-11-06 | 2014-11-06 | Panel for walls of buildings made from bamboo rods |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR3012830B1 (en) |
| WO (1) | WO2015067898A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040876A (en) * | 2015-08-18 | 2015-11-11 | 西安建筑科技大学 | Novel bamboo floor slab structure |
| CN105058911A (en) * | 2015-07-27 | 2015-11-18 | 国际竹藤中心 | Composite plate and production method thereof |
| CN111576664A (en) * | 2020-06-02 | 2020-08-25 | 国科智慧(阜阳)先进技术研究院有限公司 | Novel bamboo wall |
| WO2020216871A1 (en) * | 2019-04-25 | 2020-10-29 | Markus Bard | Material plate |
| US11707908B2 (en) | 2016-05-12 | 2023-07-25 | Air Bamboo Industrial Gmbh | Construction element having cover plates and tube segments made of a wood-based material |
| RU2815233C2 (en) * | 2019-04-25 | 2024-03-12 | Маркус БАРД | Multilayer board |
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|---|---|---|---|---|
| US2369006A (en) * | 1941-10-27 | 1945-02-06 | Banks John Leon Menzies Stone | Structural material |
| GB2234935A (en) * | 1989-07-20 | 1991-02-20 | Wa Chu | Laminated board including bamboo |
| DE9206400U1 (en) * | 1992-04-02 | 1992-07-02 | Natur-Technik Verwertung GmbH, 8058 Erding | Construction or packaging materials made from organic raw materials |
| GB2292336A (en) * | 1994-08-18 | 1996-02-21 | Qingdao Jinyuan Co | High strength bamboo plywood and the process for manufacturing the same |
| EP0765738A1 (en) * | 1995-04-12 | 1997-04-02 | Onnetsu Kankyo Kaihatsu Inc. | Platy or molded material and method of manufacturing the same |
| WO1997020115A2 (en) * | 1995-11-30 | 1997-06-05 | Ralf Simon | Method for manufacturing structural members containing bamboo, in particular bamboo bonded plates used for furniture and internal structures, and structural members made of bamboo |
| CA2379878A1 (en) * | 2001-04-20 | 2002-10-20 | Hai Ping Cao | Two-ply flooring having a cross-grain bottom ply |
-
2013
- 2013-11-06 FR FR1360847A patent/FR3012830B1/en not_active Expired - Fee Related
-
2014
- 2014-11-06 WO PCT/FR2014/052830 patent/WO2015067898A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2369006A (en) * | 1941-10-27 | 1945-02-06 | Banks John Leon Menzies Stone | Structural material |
| GB2234935A (en) * | 1989-07-20 | 1991-02-20 | Wa Chu | Laminated board including bamboo |
| DE9206400U1 (en) * | 1992-04-02 | 1992-07-02 | Natur-Technik Verwertung GmbH, 8058 Erding | Construction or packaging materials made from organic raw materials |
| GB2292336A (en) * | 1994-08-18 | 1996-02-21 | Qingdao Jinyuan Co | High strength bamboo plywood and the process for manufacturing the same |
| EP0765738A1 (en) * | 1995-04-12 | 1997-04-02 | Onnetsu Kankyo Kaihatsu Inc. | Platy or molded material and method of manufacturing the same |
| WO1997020115A2 (en) * | 1995-11-30 | 1997-06-05 | Ralf Simon | Method for manufacturing structural members containing bamboo, in particular bamboo bonded plates used for furniture and internal structures, and structural members made of bamboo |
| CA2379878A1 (en) * | 2001-04-20 | 2002-10-20 | Hai Ping Cao | Two-ply flooring having a cross-grain bottom ply |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105058911A (en) * | 2015-07-27 | 2015-11-18 | 国际竹藤中心 | Composite plate and production method thereof |
| CN105040876A (en) * | 2015-08-18 | 2015-11-11 | 西安建筑科技大学 | Novel bamboo floor slab structure |
| US11707908B2 (en) | 2016-05-12 | 2023-07-25 | Air Bamboo Industrial Gmbh | Construction element having cover plates and tube segments made of a wood-based material |
| WO2020216871A1 (en) * | 2019-04-25 | 2020-10-29 | Markus Bard | Material plate |
| CH716115A1 (en) * | 2019-04-25 | 2020-10-30 | Bard Markus | Material plate. |
| RU2815233C2 (en) * | 2019-04-25 | 2024-03-12 | Маркус БАРД | Multilayer board |
| CN111576664A (en) * | 2020-06-02 | 2020-08-25 | 国科智慧(阜阳)先进技术研究院有限公司 | Novel bamboo wall |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3012830B1 (en) | 2016-05-13 |
| FR3012830A1 (en) | 2015-05-08 |
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