EP1072859B1 - Procédé de mise en place de fibres dans un étui - Google Patents
Procédé de mise en place de fibres dans un étui Download PDFInfo
- Publication number
- EP1072859B1 EP1072859B1 EP00402042A EP00402042A EP1072859B1 EP 1072859 B1 EP1072859 B1 EP 1072859B1 EP 00402042 A EP00402042 A EP 00402042A EP 00402042 A EP00402042 A EP 00402042A EP 1072859 B1 EP1072859 B1 EP 1072859B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- skein
- fibers
- mold
- fibre
- stacking method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 38
- 239000000835 fiber Substances 0.000 claims description 81
- 239000000463 material Substances 0.000 claims description 27
- 238000005520 cutting process Methods 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 13
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
- 239000004917 carbon fiber Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 8
- 238000005470 impregnation Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000011888 foil Substances 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 235000012431 wafers Nutrition 0.000 description 20
- 235000012771 pancakes Nutrition 0.000 description 19
- 239000006185 dispersion Substances 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000000873 masking effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 239000011111 cardboard Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910001487 potassium perchlorate Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- -1 plexyglas Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 229920006370 Kynar Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002757 inflammatory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
- F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
- F42B12/70—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies for dispensing radar chaff or infrared material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49801—Shaping fiber or fibered material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49885—Assembling or joining with coating before or during assembling
Definitions
- the technical field of the invention is that of processes for placing fibers of length less than 10 mm in a case, especially for make a munition dispersing such fibers, by example to ensure masking or decoy in the infrared and / or millimeter range.
- the main problem encountered with such ammunition is that of ensuring optimal filling of the ammunition with a maximum of fibers having a length scaled down.
- the length of the fibers to be dispersed must be less than 10mm to ensure the effectiveness of the masking in the desired wavelength band.
- the length of the fibers to be dispersed must be the same order of magnitude that the wavelength of the radiation at mask, i.e. fibers from 3 to 6 mm for masking in the millimeter range (infrared masking is also provided by carbon fibers due to the absorption of radiation by these. last).
- the filling of ammunition is carried out by placing in bulk in the case. We do not provide thus an optimal filling of the case and the reproducibility of ammunition performance is not assured since the mass and / or distribution of the fibers may vary from ammunition to another.
- the patent US5179778 thus describes a method of setting place fibers in an ammunition case. This process puts using a sleeve which is pulled with force important to ensure radial compaction of the fibers in a strand. A cutting of the strand into patties is then performed.
- the method according to the invention thus allows in a way simple and inexpensive to ensure the establishment in a case of short fibers (less than 10mm) and in the form wafers whose diameter can be large (greater than 40mm) patties which may include recesses.
- the solidified strand can be cut when it is in the mold, the mold having notches allowing the passage of a means cutting.
- the solidified strand can be removed of the mold then surround the strand thus solidified with a retaining sheath before cutting the strand into patties.
- the mold may include an imprint semi-cylindrical to give the solidified strand a half cylinder shape and then we will do everything first at least two identical strands that we then assemble in a single retaining sheath cylindrical.
- the mold may include a cover comprising a semi-cylindrical profile allowing to arrange a half channel cylindrical axial on the solidified strand.
- An axial channel can be made by drilling the strand or solidified pancakes.
- the retaining sheath may be constituted by a heat-shrink tubing or by an envelope metallic.
- the metal envelope may be a sieve with a mesh width of less than 140 micrometers.
- the metal envelope can be made from a sheet wrapped around the strand and welded edge to edge.
- the grouping of long fibers in strand can be made by winding a long fiber between two studs secured to a support.
- the grouping of long fibers into strand can be made by winding on itself unidirectional fabric.
- the solidifiable material may be water or carry water.
- the solidifiable material may have a point of solidification above 0 ° C and a melting point or boiling below 150 ° C. It could be constituted with a wax.
- the fibers will be carbon fibers or else glass fibers covered with a conductive material by for example aluminum, or organic fibers conductive.
- a munition 1 obtained with the method according to the invention comprises a case 2, prefragmented or not, which is made for example in a plastic material such as plexyglas, polycarbonate or polyethylene and which is integral with a base 3, by metal example.
- the base is intended to allow the fixing the ammunition on a launch system known type and not shown.
- This launch system can for example be worn by an aircraft or by a land vehicle. he will conventionally include a guide tube for the ammunition and an ejection piston which will be pushed by a gas generating charge.
- the case 2 contains a stack of pancakes 4 of carbon fibers.
- Each wafer 4 has a thickness of less than 10mm and the fibers are arranged all parallel to each other others in each cake.
- the fibers have a diameter of about 7 micrometers and they have a length equal to the thickness of the wafer.
- wafers whose thickness will be between 3mm and 6mm.
- Each wafer is surrounded by an outer sheath 5 which maintains the fibers.
- This sheath is made in plastic or metal.
- the sheath 5 could be omitted at condition to follow another mode of implementation described also thereafter.
- Each wafer has an axial hole and the stack des- patettes 4 thus delimits an axial channel 6 to inside which is placed a cardboard tube 7 (or plastic) filled with a pyrotechnic charge of dispersion 8.
- each wafer could carry a portion of tube (washer) the juxtaposition of different washers forming the tube 7.
- the dispersion load 8 is constituted for example by a pyrotechnic composition combining Aluminum and potassium perchlorate (Al / KClO4) in the proportions respective by mass of 20 to 30% of aluminum for 80 to 70% KClO4 (preferred proportions 24% aluminum for 76% perchlorate).
- the cover is returned secured to case 2 by gluing its rim device 10 on the outer cylindrical surface of the case.
- the cover could also be made of a single piece with case.
- the base 3 carries a conventional ignition means 11 which is not described here in detail and which will include example a delay (pyrotechnic or electronic) which is intended to be triggered when the ammunition is fired and a inflammatory composition ensuring ignition of the charge dispersion pyrotechnics 8.
- a conventional ignition means 11 which is not described here in detail and which will include example a delay (pyrotechnic or electronic) which is intended to be triggered when the ammunition is fired and a inflammatory composition ensuring ignition of the charge dispersion pyrotechnics 8.
- the gas pressure following the ignition of this charge causes the case 2 to burst and disperse fibers constituting the pancakes.
- a decoy ammunition may be made up using carbon fibers instead reflective flakes, for example filaments aluminum.
- the external diameter of the pancakes is of the order of 70mm, the diameter of the axial channel 6 is around 15mm (it will vary depending on the nature of the case and the amount of charge 8 that is needed to break this case and scatter the fibers).
- Fiber storage is perfectly uniform and symmetrical the surface density of fibers is around of 24,000 fibers per square millimeter.
- Such ammunition allows reliably and reproducible the generation of a cloud of dimensions important.
- a cloud 2 m in diameter with 40mm ammunition in diameter and 60mm long.
- Such ammunition will be produced by implementing the method according to the invention.
- a step A we first make a strand 12 fibers (carbon or aluminized glass or a aluminized organic material) parallel to each other.
- the strand must have an equal number of fibers in section the number of fibers desired in a section of ammunition.
- This strand 12 can be produced for example by winding continuous of a single fiber between two pads.
- Figure 2 thus represents a tool 13 making it possible to produce a such winding.
- the tool 13 includes a flat support 15 on which two cylindrical studs 14a, 14b are fixed.
- a fiber 16 is wound between the two studs with a machine winding (not shown). Alternatively we can fix the support 15 in one turn to allow winding fiber.
- the spacing of the studs 14a / 14b makes it possible to define the length of the strand 12.
- the strand will be given a length compatible with the capabilities of the winding machine. We may if it is not too large, give the strand a length at least equal to the height of the stack of pancakes that we are trying to make.
- the strand 12 can also be produced by winding of a unidirectional fiber fabric.
- a unidirectional fiber fabric well known to the skilled person the fibers are all parallel and they are interconnected in the fabric by nylon threads which are perpendicular to them and which provide low mechanical strength in the direction perpendicular to the fiber.
- FIG. 5 thus shows a strand 12 in the process of realization by winding around an axis 17 of a sheet 18 of a fabric comprising carbon fibers (or aluminized glass) oriented parallel to axis 17.
- the second step of the process is an impregnation of the strand 12 with a material 19 solidifiable at a first temperature.
- the material may advantageously be water. he may alternatively be a wax or a material organic with low melting or evaporation point.
- the impregnation is carried out by dipping the strand 12 in a tank 20 filled with the impregnation material 19.
- step C we lay the strand 12 thus impregnated in a mold 21.
- Figure 3 shows a first embodiment of a such mold.
- This mold includes two shells 22a and 22b which position themselves precisely in relation to each other by means of grooves 23 and tabs 24.
- the shells 22a and 22b define a cavity cylindrical 25 whose diameter is the desired diameter for the pancakes 4.
- the mold will be made for example of aluminum.
- the initial strand is made by winding, preferably adopt a mold whose cavity 25 will have a length greater than the total length desired for stacking pancakes. So the ends of the strand where the fibers were wound on the pads 14 may be withdrawn. This ensures good homogeneity of the loading of fibers over the entire length of the ammunition.
- step D the mold 21 is placed in a enclosure 26 allowing it to be brought to a first temperature T1 which is less than or equal to the solidification temperature of the impregnation material 19.
- the enclosure will be constituted by a type freezer conventional or any other cooling system.
- the mold 21 can be immersed in liquid nitrogen.
- the solidified strand is removed from the mold and surrounds it (step E1) with a retaining sheath 5.
- This retaining sheath will preferably be constituted by a metal envelope made from a sheet 27 of a stainless steel sieve from 20 to 140 micrometers thick.
- the side of the nominal mesh of this sieve may vary between 30 and 210 micrometers.
- the sheet is wrapped around the strand and it is welded edge to edge (for example laser or tinning) so as to form a sheath 5. It is also possible use a heat-sealable aluminum film.
- the function of the sheath 5 is to ensure the maintenance peripheral fibers during the operations of cutting patties 4 as will be described by after. It will however be chosen thin enough to do not disturb the dispersion of the fibers during ammunition operation.
- a heat-shrinkable plastic material for example a Kynar type heat shrink tubing (brand registered) offered by the company Raychem and whose shrinking temperature will be chosen below 150 ° C.
- step E1 a machining of a axial channel 6 (by means of a turn).
- This tube (cardboard or plastic) will function of ensuring the maintenance of fibers at the level of axial channel and during cutting operations wafers 4 as will be described later.
- step F We proceed to step F to cut into patties 4 of the strand 12 fitted with its sheath 5 and tube 28.
- the thickness of the wafers will be less than 10mm and preferably between 3 and 6 mm.
- the cutting is carried out using for example a grinder 29 (or by laser cutting). We will maintain the temperature of the strand at a low level in order to avoid decohesion of the fibers.
- step G we place them (step G) in an oven 30 brought to a second temperature T2 chosen so as to eliminate the solidifiable material 19 (by evaporation or fusion).
- a sheath in the form of a screen ensures porosity which facilitates the removal of the material 19 without however free the fibers.
- Each wafer 4 will have at its surface outer sheath portion 5 and at the level of the axial channel a portion of the tube 28.
- the material filling the tube was eliminated with that which retained the fibers.
- Sheath 5 and tube 28 ensure a certain mechanical strength of each wafer 4, facilitating the subsequent mounting of the wafers in the case 2 of the ammunition (step H).
- Load can be itself placed in a tube or be poured loose in the axial channel 6.
- step H then occurs before step G).
- a mold 21 can be used according to that shown in Figure 4a.
- This mold differs from the previous one in that the shell upper 22b takes the form of a flat cover. The mold therefore delimits an internal semicylindrical cavity 31.
- the advantage of such an embodiment is allow a better loading density to be obtained, compression and insertion of fibers into the mold being facilitated.
- the axial bore is drilled after sheath assembly.
- Figure 4b shows a variant of this mode of embodiment, variant in which the cover 22b of the mold has a semi-cylindrical profile 32 which allows to arrange a half cylindrical axial channel on the strand.
- two strands 12a, 12b are produced having a form of half cylinder and they are assembled using a sheath 5 including the tube 28 containing the material solidified.
- step E3 This variant of the process is shown diagrammatically in the figure 6 (step E3).
- Figures 7 and 8 show a mold used in a third embodiment of the invention.
- This mold like that of FIG. 3 delimits a cylindrical axial cavity 25.
- each shell 22a, 22b has notches 33 allowing passage cutting means, for example disc, saw, water jet or laser.
- the mold 21 will advantageously include bores axial 34 which allow the operation of drilling the strand directly inside the mold. After drilling the axial channel (before or after cutting the pancakes), we will have a tube 28 filled with a material solidified.
- Drilling and cutting operations take place so directly after step D and we get pancakes that can be placed in a case of ammunition.
- Steaming should preferably be carried out directly after placement in the case. It is also possible to place the stack of cut washers in a tube light paper or cardboard or a porous material that can allow the solidification material to escape.
- the stack will be steamed with this tube porous then the assembly will be placed in the case of the ammunition.
- steps F or G we will stack the number of pancakes desired (which can therefore come from several strands) in a case to make ammunition (step H).
- Ammunition produced with such a process will notably allow the dispersion of carbon fibers or conductive in order to achieve masking or decoy in the desired wavelength band.
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Nonwoven Fabrics (AREA)
- Moulding By Coating Moulds (AREA)
Description
- on réalise au moins un regroupement de fibres longues en au moins un toron,
- on imprègne le ou les torons avec un matériau solidifiable à une première température,
- on dispose le ou les torons ainsi imprégnés dans un moule,
- on solidifie le ou les torons placés dans le moule en le portant à la première température,
- on découpe le ou les torons à l'état solidifié obtenus en au moins deux galettes ayant chacune pour épaisseur la longueur souhaitée pour les fibres,
- on élimine le matériau solidifiable en portant les galettes à une deuxième température avant ou après mise en place des galettes dans l'étui.
- la figure 1 représente en coupe longitudinale une munition obtenue avec le procédé selon l'invention,
- la figure 2 représente en perspective un outillage de réalisation d'un toron selon un mode particulier de réalisation de l'invention,
- la figure 3 représente en coupe transversale un premier exemple de moule utilisé dans une mode particulier de réalisation de l'invention,
- la figure 4a représente en coupe transversale un deuxième exemple de moule utilisé dans une mode particulier de réalisation de l'invention,
- la figure 4b est une variante de réalisation du moule selon la figure 4a,
- la figure 5 représente en perspective un mode particulier de réalisation d'un toron,
- la figure 6 schématise la succession des principales étapes du procédé selon l'invention,
- les figures 7 et 8 représentent un troisième exemple de moule utilisé dans une mode particulier de réalisation de l'invention, la figure 7 étant une coupe transversale de ce moule suivant le plan repéré BB sur la figure 8, la figure 8 étant elle même une coupe longitudinale de ce moule suivant le plan repéré AA sur la figure 7.
Claims (17)
- Procédé de mise en place de fibres de longueur inférieure à 10mm dans un étui (2), notamment de munition, comprenant les étapes suivantes:on réalise au moins un regroupement de fibres longues en au moins un toron (12),on imprègne le ou les torons avec un matériau (19) solidifiable à une première température,on dispose le ou les torons ainsi imprégnés dans un moule (21),on solidifie le ou les torons placés dans le moule en le portant à la première température,on découpe le ou les torons (12) à l'état solidifié ainsi obtenus en au moins deux galettes (4) ayant chacune pour épaisseur la longueur souhaitée pour les fibres,on élimine le matériau solidifiable (19) en portant les galettes à une deuxième température avant ou après mise en place des galettes dans l'étui (2).
- Procédé de mise en place de fibres selon la revendication 1, caractérisé en ce que la découpe du toron solidifié (12) est réalisée lorsque celui ci se trouve dans le moule (21), le moule comportant des encoches (33) permettant le passage d'un moyen de découpe.
- Procédé de mise en place de fibres selon la revendication 1, caractérisé en ce qu'on retire le toron (12) solidifié du moule (21) puis' on entoure le toron ainsi solidifié avec une gaine de maintien (5) avant de découper le toron en galettes (4).
- Procédé de mise en place de fibres selon la revendication 3, caractérisé en ce que le moule (21) comprend une empreinte hémicylindrique (31) permettant de donner au toron solidifié une forme de demi cylindre et en ce qu'on réalise tout d'abord au moins deux torons identiques que l'on assemble ensuite dans une seule gaine de maintien cylindrique (5).
- Procédé de mise en place de fibres selon la revendication 4, caractérisé en ce que le moule (21) comporte un couvercle (22b) comportant un profil hémicylindrique (32) permettant d'aménager un demi canal axial cylindrique sur le toron solidifié (12).
- Procédé de mise en place de fibres selon une des revendications 1 à 4, caractérisé en ce qu'on réalise un canal axial (6) par perçage du toron (12) ou des galettes solidifiés.
- Procédé de mise en place de fibres selon une des revendications 5 ou 6, caractérisé en ce qu'après réalisation du canal axial (6) dans le toron solidifié et avant réalisation de la découpe, on dispose à l'intérieur du canal axial un tube (28) rempli du même matériau d'imprégnation (19) et à l'état solidifié.
- Procédé de mise en place de fibres selon une des revendications 3 à 7, caractérisé en ce que la gaine de maintien (5) est constituée par une gaine thermorétractable.
- Procédé de mise en place de fibres selon une des revendications 3 à 7, caractérisé en ce que la gaine de maintien (5) est constituée par une enveloppe métallique.
- Procédé de mise en place de fibres selon la revendication 9, caractérisé en ce que l'enveloppe métallique (5) est un tamis ayant une largeur de maille inférieure à 140 micromètres.
- Procédé de mise en place de fibres selon une des revendications 9 ou 10, caractérisé en ce que l'enveloppe métallique (5) est réalisée à partir d'une feuille (27) enroulée autour du toron (12) et soudée bord à bord.
- Procédé de mise en place de fibres selon une des revendications 1 à 11, caractérisé en ce que le regroupement de fibres longues en toron (12) est réalisé par enroulement d'une fibre longue (16) entre deux plots (14a,14b) solidaires d'un support (15).
- Procédé de mise en place de fibres selon une des revendications 1 à 11, caractérisé en ce que le regroupement de fibres longues en toron (12) est réalisé par enroulement sur lui même d'un tissu unidirectionnel (18).
- Procédé de mise en place de fibres selon une des revendications 1 à 13, caractérisé en ce que le matériau solidifiable (19) est de l'eau ou comporte de l'eau.
- Procédé de mise en place de fibres selon une des revendications 1 à 13, caractérisé en ce que le matériau solidifiable a un point de solidification supérieur à 0°C et un point de fusion ou d'ébullition inférieur à 150°C.
- Procédé de mise en place de fibres selon la revendication 15, caractérisé en ce que le matériau solidifiable est une cire.
- Procédé de mise en place de fibres selon une des revendications 1 à 16, caractérisé en ce que les fibres sont des fibres de carbone ou bien des fibres de verre recouvertes d'un matériau conducteur par exemple l'aluminium, ou bien des fibres organiques conductrices.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9909773A FR2797044B1 (fr) | 1999-07-27 | 1999-07-27 | Procede de mise en place de fibres dans un etui et munition realisee avec ce procede |
FR9909773 | 1999-07-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1072859A1 EP1072859A1 (fr) | 2001-01-31 |
EP1072859B1 true EP1072859B1 (fr) | 2003-01-08 |
Family
ID=9548607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00402042A Expired - Lifetime EP1072859B1 (fr) | 1999-07-27 | 2000-07-18 | Procédé de mise en place de fibres dans un étui |
Country Status (4)
Country | Link |
---|---|
US (1) | US6381825B1 (fr) |
EP (1) | EP1072859B1 (fr) |
DE (1) | DE60001129T2 (fr) |
FR (1) | FR2797044B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102051826A (zh) * | 2010-11-12 | 2011-05-11 | 许昌恒源发制品股份有限公司 | 假发用快速染色助剂及其制备方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1381821A1 (fr) * | 2001-04-24 | 2004-01-21 | Anthony Joseph Cesaroni | Projectiles sans plomb |
FR2840977B1 (fr) | 2002-06-12 | 2004-09-03 | Giat Ind Sa | Dispositif et munition de protection d'un vehicule ou d'une plate-forme fixe contre une menace |
FR2840978B1 (fr) * | 2002-06-12 | 2004-09-03 | Giat Ind Sa | Munition de masquage |
FR2867557B1 (fr) * | 2004-03-12 | 2008-03-21 | Lacroix Soc E | Dispositif emetteur de rayonnement notamment infrarouge |
GB2478019B (en) * | 2010-07-30 | 2012-10-17 | Wallop Defence Systems Ltd | Chaff package assembly system |
US10955224B1 (en) * | 2019-03-08 | 2021-03-23 | Shawn M. Theiss | Net packing method and device |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232553A (en) * | 1963-08-01 | 1966-02-01 | Indiana Steel & Wire Company I | Apparatus for forming filamentary material into an annular bundle |
US3300158A (en) * | 1965-01-29 | 1967-01-24 | Kaiser Aluminium Chem Corp | Wire coiling device |
US3466210A (en) * | 1966-01-10 | 1969-09-09 | Richard C Wareham | Method of forming a heat shrinkable tubular sleeve and bonding same to a tubular member |
US3453959A (en) * | 1967-08-08 | 1969-07-08 | Goodyear Aerospace Corp | Adjustable delay timer for explosive device |
GB1598423A (en) * | 1967-11-03 | 1981-09-23 | Gen Dynamics Corp | Decoy round |
US4261099A (en) * | 1979-07-27 | 1981-04-14 | Westinghouse Electric Corp. | Method for making multi-element brushes |
GB2089761B (en) * | 1980-12-22 | 1984-09-12 | British Aerospace | Heat shrinking plastics member onto filament/resin composite |
US5179778A (en) * | 1992-02-25 | 1993-01-19 | Dickson Lawrence J | Method and means for producing disks of tightly packed on-end aligned fibers |
US5328494A (en) * | 1992-04-08 | 1994-07-12 | Davidson Textron Inc. | Method of forming a preform by precoating glass fibers prior to chopping and preforming |
JPH06190272A (ja) * | 1992-12-25 | 1994-07-12 | Nippon Soken Inc | 繊維の充填方法 |
US5659147A (en) * | 1993-01-21 | 1997-08-19 | The United States Of America As Represented By The Secretary Of The Army | Method of assembly of compacted fibers and explosive charge for effective dissemination |
-
1999
- 1999-07-27 FR FR9909773A patent/FR2797044B1/fr not_active Expired - Fee Related
-
2000
- 2000-07-18 EP EP00402042A patent/EP1072859B1/fr not_active Expired - Lifetime
- 2000-07-18 DE DE60001129T patent/DE60001129T2/de not_active Expired - Lifetime
- 2000-07-27 US US09/627,005 patent/US6381825B1/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102051826A (zh) * | 2010-11-12 | 2011-05-11 | 许昌恒源发制品股份有限公司 | 假发用快速染色助剂及其制备方法 |
CN102051826B (zh) * | 2010-11-12 | 2012-10-03 | 许昌恒源发制品股份有限公司 | 假发用快速染色助剂及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
DE60001129T2 (de) | 2003-07-24 |
FR2797044B1 (fr) | 2002-08-09 |
EP1072859A1 (fr) | 2001-01-31 |
FR2797044A1 (fr) | 2001-02-02 |
DE60001129D1 (de) | 2003-02-13 |
US6381825B1 (en) | 2002-05-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2548607C (fr) | Procede de fabrication d'une piece avec un insert en materiau composite a matrice metallique et fibres ceramiques | |
CA2548624C (fr) | Procede de fabrication d'une piece tubulaire avec un insert en materiau composite a matrice metallique | |
FR2505509A1 (fr) | Procede et emballage de protection de parties epissees de fibres optiques | |
EP1072859B1 (fr) | Procédé de mise en place de fibres dans un étui | |
CA2547858C (fr) | Procede de fabrication d'un insert bobine de fils enduits | |
EP2577678B1 (fr) | Emballage pour le transport et/ou entreposage de matieres radioactives, comprenant des moyens de conduction thermique ameliores | |
EP0283374B1 (fr) | Dispositif d'évaporation sous vide d'un métal en continu | |
EP1950003B1 (fr) | Pièce tubulaire comportant un insert en matière composite à matrice métallique | |
FR2546188A1 (fr) | Dispositif et procede de realisation de corps cristallins par croissance | |
EP0418150B1 (fr) | Dispositif d'enrobage des fibres d'un faisceau par de la résine | |
CA2054901C (fr) | Dispositif de protection contre les eclats produits par un boulon a rupture commandee | |
EP0367815A1 (fr) | Dispositif de separation de freinage aerodynamique d'un corps. | |
EP0936486B1 (fr) | Boîtier de piquage d'un câble notamment de fibres optiques | |
CH657699A5 (fr) | Dispositif de declenchement artificiel d'eclairs de foudre. | |
FR2640259A1 (fr) | Procede de fabrication par moulage d'un bloc de propergol solide a combustion frontale pilotee par des conducteurs de chaleur et bloc obtenu par ce procede | |
EP2379459B1 (fr) | Procede de gainage d'un milieu laser solide et dispositif de mise en oeuvre | |
WO2016087721A1 (fr) | Procédé de fabrication d'une coque de réflecteur d'antenne, en particulier d'un engin spatial | |
FR2648222A1 (fr) | Projectile-fleche a energie cinetique | |
FR2725781A1 (fr) | Materiau d'allumage pour charge propulsive et systeme d'allumage ou tube allumeur mettant en oeuvre un tel materiau | |
FR2849179A1 (fr) | Munition sans douille et procede de montage d'une telle munition | |
EP1371935B1 (fr) | Dispositif et muniton de protection d'un véhicule ou d'une plate-forme contre une menace | |
EP0150645A2 (fr) | Système d'amorçage d'un chargement explosif | |
FR2924799A1 (fr) | Conteneur disperseur de paillettes formant reflecteur electromagnetique | |
EP2909898A1 (fr) | Laser a fibre optique et procede de fabrication d'un laser a fibre optique | |
FR2924798A1 (fr) | Perfectionnements aux conteneurs disperseurs de paillettes formant reflecteur electromagnetique |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE GB IT LI SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20010221 |
|
AKX | Designation fees paid |
Free format text: CH DE GB IT LI SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20020419 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE GB IT LI SE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20030108 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: ING. MARCO ZARDI C/O M. ZARDI & CO. S.A. |
|
REF | Corresponds to: |
Ref document number: 60001129 Country of ref document: DE Date of ref document: 20030213 Kind code of ref document: P |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20031009 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20060626 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20060731 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070731 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20090625 AND 20090701 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070718 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20100706 Year of fee payment: 11 Ref country code: SE Payment date: 20100625 Year of fee payment: 11 Ref country code: GB Payment date: 20100628 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20110718 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120201 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 60001129 Country of ref document: DE Effective date: 20120201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110718 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110719 |