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WO2010069084A1 - Procédé de fabrication d'un corps creux rigide en matériau composite - Google Patents

Procédé de fabrication d'un corps creux rigide en matériau composite Download PDF

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Publication number
WO2010069084A1
WO2010069084A1 PCT/CH2008/000537 CH2008000537W WO2010069084A1 WO 2010069084 A1 WO2010069084 A1 WO 2010069084A1 CH 2008000537 W CH2008000537 W CH 2008000537W WO 2010069084 A1 WO2010069084 A1 WO 2010069084A1
Authority
WO
WIPO (PCT)
Prior art keywords
dimensionally stable
hollow body
mold
mandrel
mold core
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.)
Ceased
Application number
PCT/CH2008/000537
Other languages
German (de)
English (en)
Inventor
Bodo Fiedler
André CARTIER
Gregor Peikert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beyond Gravity Schweiz AG
Original Assignee
RUAG Aerospace AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RUAG Aerospace AG filed Critical RUAG Aerospace AG
Priority to PCT/CH2008/000537 priority Critical patent/WO2010069084A1/fr
Publication of WO2010069084A1 publication Critical patent/WO2010069084A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3821—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process composed of particles enclosed in a bag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • B29C33/505—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible cores or mandrels, e.g. inflatable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing

Definitions

  • the invention relates to a method for producing a dimensionally stable composite hollow body according to the preamble of patent claim 1.
  • a hollow body having a precisely defined outer contour is to be produced with such a method
  • the mold core is enclosed with a mold after the application of the solidifiable material and the material is pressed against the inner wall of the mold before and during solidification.
  • a tube-like casing arranged between the actual mold core and the applied material is placed under an overpressure and thereby presses the material against the mold.
  • the solidifiable material is lifted off the actual mold core, so that it may, before solidification of the material to a material shift, eg due to gravity come, with the result that the finished hollow body has an imprecise inner contour and Undefined wall thicknesses, which especially in heavily loaded components for aerospace is not tolerable.
  • the problem that the mandrel after solidification of the material in its existing form can not be removed from the hollow body formed around it.
  • a solution to this problem is known from EP 0 370 472 A2.
  • a mold core made of polystyrene is tightly enclosed by a first plastic film.
  • Several layers of a fabric material impregnated with a curable binder are then placed on this plastic film and the whole is then arranged in a mold.
  • This mold is enclosed by a second plastic film, within which a negative pressure is generated, while the interior of the first plastic film is kept at atmospheric pressure, so that the fabric layers are lifted from the first plastic film from the mold core and pressed against the walls of the mold.
  • the binder of the fabric material is cured by heating, at the same time the polystyrene core shrinks or coincides, so that its remains can be easily removed from the finished hollow body.
  • the inventive method for producing a dimensionally stable composite hollow body comprises the following steps: In a first step, a dimensionally stable
  • Mold core provided, which has an outer contour, which corresponds substantially to the desired inner contour of the composite hollow body to be produced. Then, a solidifiable material or layers of material is placed on the dimensionally stable mold core, e.g. several layers of a soaked with epoxy resin fabric material.
  • the formstable mandrel with the solidifiable material placed thereon is surrounded with a shape whose inner contour corresponds to the desired outer contour of the hollow body to be produced.
  • Pressed inner contour of the mold by the mold core or at least a part thereof is heated and thereby thermally expands.
  • the pressing force required for pressing the material against the inner contour of the mold is thus provided exclusively by the fact that at least part of the material forming the dimensionally stable mandrel is heated and expands as a result of the heating.
  • the solidifiable material As the solidifiable material is pressed against the inner contour of the mold by the thermally expanded mandrel, it is solidified to form a dimensionally stable composite hollow body (to be produced).
  • the invention pelg thus relates to a method for producing dimensionally stable composite hollow body by applying solidifiable material to a dimensionally stable mandrel.
  • the mold core with the material placed thereon is surrounded with a mold, wherein the material is pressed against the mold by the mold core is heated and thereby thermally expands.
  • the material is pressed against the mold by the thermally extended mandrel, it is solidified to form the dimensionally stable composite hollow body to be made.
  • the mold is removed and the mold core is removed from the hollow space formed by it in the hollow body, for which purpose the dimensional stability of the mold core is removed.
  • the aforementioned method Steps repeatedly performed using the same mold core or mold core material or at least the essential components of the mold core, for producing a plurality, preferably identical dimensionally stable composite hollow body. Multiple use saves costs and material.
  • an undercut dimensionally stable mold core is provided, and thus a dimensionally stable composite hollow body having an undercut NEN inner contour is produced.
  • the provided mold core thus has such an outer contour that it can not be removed from the cavity formed by it after solidification of the material in its shaping form.
  • an outer mold is used which, preferably circumferentially, is divided one or more times. This makes it possible to produce dimensionally stable composite hollow bodies with a rear-cut outer contour.
  • a dimensionally stable mold core which has been formed by evacuating a flexible sleeve of a substantially incompressible material which is filled with a free-flowing, substantially incompressible bulk material.
  • This solidification effect of an evacuated envelope filled with loose bulk material is known, inter alia, from vacuum-packed coffee.
  • the mold core thus formed is dimensionally stable as long as the vacuum is maintained inside the flexible casing.
  • the vacuum in the flexible sheath is removed for removing the mandrel from the hollow body and at least part of the bulk material is removed from the shell before the hollow body is removed flexible sheath is removed from the cavity.
  • the flexible shell and the bulk material can be used several times. It is further preferred that the removal of bulk material from the flexible shell takes place exclusively by gravity, so that can be dispensed with costly facilities for this purpose. Further, it is preferable that the flexible
  • a dimensionally stable mold core which is formed with a flexible envelope of a substantially incompressible material within which a solid body of an incompressible material is removably arranged.
  • the solid body is wholly or at least partially removed from the flexible shell.
  • the solid body and the solid-receiving cavity in the flexible sheath in the removal direction without undercuts, for example cylindrical are formed. It is also conceivable to form the solid such that its outer contour can be changed to remove or this can be removed in individual parts of the flexible sheath.
  • the solid body is helically formed and the flexible shell has a corresponding blind hole-like cavity for receiving the same, wherein it can also be provided that this cavity is widened radially when screwing the solid.
  • This variant of the inventive method is particularly suitable for the production of dimensionally stable composite hollow bodies with not or only slightly undercut cavity contours and has the advantage that the mandrel can be used multiple times and no processes are required for the formation and removal of the mandrel, which typically generate dust or dirt, so that this variant is also ideal for the production of composite hollow bodies under clean room conditions.
  • the flexible sheath is made of a material with a thermal coefficient of linear expansion at 2O 0 C in the range between ⁇ OxlO "5 / ⁇ 1 and 35OxIO -6 ZK " 1 , preferably between 20OxIO -6 ZK “1 and 30OxIO -6 ZK “ 1 , formed, preferably of a thermoplastic elastomer, rubber, latex or silicone.
  • a material with a thermal coefficient of linear expansion at 2O 0 C in the range between ⁇ OxlO "5 / ⁇ 1 and 35OxIO -6 ZK “ 1 , preferably between 20OxIO -6 ZK “1 and 30OxIO -6 ZK “ 1 , formed, preferably of a thermoplastic elastomer, rubber, latex or silicone.
  • With such materials can be at reasonable wall thickness of the flexible envelope, by heating, for example, starting from room temperature to 100 0 C to 200 0 C relatively large thermal expansions of the flexible sheath produce, which is desirable to allow
  • the flexible sheath has a minimum thickness of 5 mm, preferably of 10 mm, in its shaping area.
  • the ratio of the thickness of the flexible casing to the thickness of the solidified material layer of the finished hollow body is greater than 5.
  • a dimensionally stable mold core which at least partially consists of a material whose melting point is below a temperature lies, in which the material of the finished produced by the process hollow body is damaged or destroyed.
  • Solid molding cores of thermoplastic elastomers are particularly suitable for this process variant. After melting of these mandrels in order to remove them from the respective cavity formed by them, the slotted material can be formed with advantage in a directly subsequent operation again by pouring into a mold to form a new mandrel.
  • the flexible shell solid may be formed of a material which, as taught in the third embodiment, can be removed by melting, without thereby the hollow body produced takes damage.
  • a fabric impregnated with a solidifiable binder is placed on the mold core, preferably an impregnated fiber fabric or scrim, preferably of carbon fibers.
  • a fabric is applied, which is impregnated with a thermosetting resin, preferably with epoxy resin.
  • a thermosetting resin preferably with epoxy resin.
  • the solidifiable material is solidified by heating, even with materials which would solidify after a long time without heating. This makes it possible to heat the
  • Mold core for pressing the solidifiable material to the mold and heating the solidifiable material for solidifying the same in a common heating step and thereby save energy and / or time.
  • FIG. 1 shows a vertical section through a molding tool for forming a dimensionally stable mold core for use in a first embodiment of the method according to the invention in a first state;
  • FIG. 2 shows a vertical section through the mold of FIG. 1 in a second state
  • FIG. 3 shows a vertical section through the mold of FIG. 2 after the application of solidifiable material
  • FIG. 4 shows a vertical section through the mold of Figure 3 with the occupied mold core arranged in a mold.
  • FIG. 5 shows a vertical section through the mold of FIG. 4 with a dimensionally stable hollow body arranged on its mold core after removal of the mold in a first state;
  • FIG. 6 shows a vertical section through the mold of FIG. 4 with a dimensionally stable hollow body arranged on its mold core after removal of the mold in a second state
  • FIG. 7 shows a vertical section through a dimensionally stable mold core and a mold when carrying out a second embodiment variant of the method according to the invention
  • 8 is a vertical section through, a dimensionally stable mold core and a mold when carrying out a third embodiment of the inventive method.
  • a first preferred embodiment of the method according to the invention is set out below with reference to FIGS. 1 to 6.
  • FIG. 1 shows a vertical section through a molding tool for forming a dimensionally stable undercut mandrel for the production of a dimensionally stable hollow body by applying solidifiable material and then solidifying the material to form a dimensionally stable composite hollow body.
  • the mold is shown in Fig. 1 in an upright ground state, in which it does not form a dimensionally stable mold core.
  • the mold has a container 5, 7, 9, 18 with a rotationally symmetrical vacuum-tight interior 3, which is formed by a flexible sleeve 5 made of rubber and a bulk material reservoir 7, 9, 18.
  • the flexible sheath 5 in the illustrated situation at room temperature and lying at ambient pressure interior 3 has an independent, defined outer shape, and has in the area which serves in their intended use of the molding of the hollow body to be formed, a wall thickness from approx. 6 mm.
  • the bulk material reservoir 7, 9, 18 has a bellows 18, which is arranged in a metal cup 7 and is firmly clamped on its upper side by means of the metal cup 7 and both pressure- and vacuum-tight on the edge of a metal lid 9.
  • the metal cup 7 On its underside, the metal cup 7 has a ventilation opening 19.
  • the cup 7 and the lid 9 are made of stainless steel. However, it would be equally suitable For example, aluminum or fiber-reinforced plastic.
  • the cover 9 has a central passage opening 10, which widens in a funnel shape in the direction of the rolling bellows 18.
  • the flexible sheath 5 forms at its end facing the rolling bellows 18 a flange portion 11, which is fastened by means of a mounting flange 12 and a plurality of fastening screws 13 pressure and vacuum tight on the top of the lid 9, such that the through hole 10 without sudden cross-sectional change in the inner contour of the flexible sheath 5 passes.
  • the part of the inner space 3 formed by the bellows 18 is approximately half filled with dry quartz sand 4.
  • the interior 3 is connected via an opening 6 in the lid 9 with the environment in connection, ie under ambient or atmospheric pressure.
  • the opening 6 has a filter element 14, which is designed such that, although air can be introduced into the interior 3 and removed from it, the quartz sand 4 can not pass through the opening 6.
  • the rolling bellows 18 is rolled back in the direction of the passage opening 10 until it rests on the passage opening 10 covering the sand 4.
  • the total volume of the inner space 3 is substantially equal the volume of sand in the interior 3 arranged amount of sand 4, and the flexible shell 5 with the sand contained therein 4 has solidified into a dimensionally stable body 1, which can serve as a mold core 1 for laying of solidifiable material.
  • Fig. 3 shows a vertical section through the
  • Forming tool after this was again oriented starting from the situation shown in Fig. 2 with the flexible sheath 5 upwards and after a pre-impregnated with epoxy resin carbon fiber fabric 17 (prepreg) was placed on the mandrel 1.
  • Fig. 4 shows a vertical section through the mold, after the dimensionally stable mold core 1 has been enclosed with the tissue 17 arranged thereon starting from the situation shown in Fig. 3 with a two-part mold 8, which as the inner contour of the desired outer contour of the composite hollow body to be produced having.
  • the mold 8 surrounds a flange section 15 on the cover 9 of the container 5, 7, 9, 18 and is thereby fastened in a form-fitting manner to the molding tool. In this state, at least in places there is a small gap (not shown) between the inner contour of the mold 8 and the laid-up fabric material 17.
  • the entire assembly is heated in an oven of room temperature to about 180 0 C and held at this temperature for a longer time.
  • the flexible sheath 5 of the dimensionally stable mandrel 1 expands and thereby presses the fabric material 17 against the inner wall of the mold 8, while the epoxy resin impregnated with it hardens, so that the fabric 17 with the hardened epoxy resin contained therein then forms the dimensionally stable composite hollow body 2 to be produced.
  • FIG. 5 shows the molding tool with the composite hollow body 2 located thereon in vertical section in a situation after starting from the situation illustrated in FIG. 5 the interior space 3 has been placed under a slight vacuum via the opening 6.
  • the flexible sheath 5 has contracted in the cavity formed by it in the hollow body 2, while the rolling bellows 18 is held by the weight of the sand 4 at the bottom of the cup 7.
  • the hollow body 2 can now easily lifted off the mold upwards or be deducted from the flexible sheath 5.
  • the dimensionally stable mold core 1 on the outside of which, in turn, a fabric material 17 impregnated with a solidifiable binder, such as epoxy resin, is made of a flexible sheath 5 made of silicone, which has a cylindrical opening in its center. tion, in which as a solid body demanding a cylindrical copper tube 16 is arranged with an outer diameter corresponding to the inner diameter of the opening.
  • the dimensionally stable mold core 1 thus formed with the fabric material 17 laid thereon is surrounded by a longitudinally split two-part mold 8, the inner contour of which corresponds to the desired outer contour of the hollow body to be produced.
  • a small gap (not shown), which then by heating the flexible sheath 5 and the resulting in thermal expansion of the sheath 5 is lifted, so that the impregnated fabric material 17 by the thermally extended flexible sheath 5 against the
  • the heating to expand the flexible sheath 5, which may also serve to solidify the applied impregnated fabric material 17 in thermosetting binders, may be e.g. by heating the entire assembly in an oven, or e.g. in that a heating element is introduced into the tube 16.
  • FIG. 8 shows a vertical section through a dimensionally stable mold core with a seal placed thereon.
  • the dimensionally stable mandrel 1 consists of a solid mandrel made of a thermoplastic elastomer.
  • the mold 8 is identical to the mold shown in FIG. 4. As in the previously described embodiments of the method according to the invention, after placing the solidifiable material 17 on the mold core 1, it is surrounded by the material 17 placed thereon with a mold 8 whose inner contour corresponds to the desired outer contour of the hollow body to be produced.
  • the temperature in the furnace is raised to a temperature which is above the melting point of the material of the mold core 1 and below the damage temperature of the mold core.
  • fixed fabric material 17 is located, wherein the mandrel 1 is melted and the fabric material 17 is further solidified.
  • the entire arrangement is removed from the oven and the now liquid material of the mold core 1 is removed by pouring out of the cavity formed by the mold core.
  • the mold 8 is removed around the formed composite hollow body, whereby it is then present as a single element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un corps creux rigide en matériau composite (2) par application de matériau durcissable (17) sur un coeur de moule rigide (1). Le coeur de moule (1) pourvu du matériau (17) appliqué (17) est enveloppé d'un moule (8), le matériau (17) se comprimant contre le moule (8) pendant que le coeur de moule (1) est chauffé, ce qui en provoque la dilatation thermique. Pendant que le matériau (17) est comprimé contre le moule par le coeur de moule (1) dilaté par effet thermique, il durcit de façon à constituer le corps creux rigide en matériau composite à fabriquer. Après durcissement du matériau (17), on retire le moule (8), et on laisse le coeur de moule (1) perdre sa rigidité pour l'extraire du volume creux qu'il a créé dans le corps creux (2). Le procédé de l'invention est innovant dans la mesure où il permet la fabrication de corps creux rigides en matériau composite, ces corps creux se distinguant en ce qu'ils sont hautement rigides et très légers, en ce qu'ils sont pourvus de volumes creux à contredépouille, et en ce qu'ils présentent des profils intérieurs et extérieurs précisément définis ainsi que des épaisseurs de parois à très faibles tolérances.
PCT/CH2008/000537 2008-12-16 2008-12-16 Procédé de fabrication d'un corps creux rigide en matériau composite Ceased WO2010069084A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CH2008/000537 WO2010069084A1 (fr) 2008-12-16 2008-12-16 Procédé de fabrication d'un corps creux rigide en matériau composite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2008/000537 WO2010069084A1 (fr) 2008-12-16 2008-12-16 Procédé de fabrication d'un corps creux rigide en matériau composite

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Publication Number Publication Date
WO2010069084A1 true WO2010069084A1 (fr) 2010-06-24

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012004942A1 (de) * 2012-03-12 2013-09-12 Munich Composites Gmbh Verfahren zum Herstellen eines Vorformlings und eines daraus hergestellten Faserverbundfertigbauteils
ITTV20130094A1 (it) * 2013-06-10 2014-12-11 Tryonic Ltd Metodo di stampaggio
DE102014208412A1 (de) * 2014-05-06 2015-11-12 Bayerische Motoren Werke Aktiengesellschaft Stützkern und Verfahren zur Herstellung eines faserverstärkten Hohlbauteils
DE102015209918A1 (de) * 2015-05-29 2016-12-01 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines faserverstärkten Hohlbauteils
WO2017148997A1 (fr) * 2016-03-04 2017-09-08 KTM Technologies GmbH Noyau de moule à matériau expansible

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517902A (en) * 1944-08-31 1950-08-08 George C Luebkeman Molding process and means
EP0491650A2 (fr) * 1990-12-19 1992-06-24 United Technologies Corporation Moulage conformable pour composites

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517902A (en) * 1944-08-31 1950-08-08 George C Luebkeman Molding process and means
EP0491650A2 (fr) * 1990-12-19 1992-06-24 United Technologies Corporation Moulage conformable pour composites

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012004942A1 (de) * 2012-03-12 2013-09-12 Munich Composites Gmbh Verfahren zum Herstellen eines Vorformlings und eines daraus hergestellten Faserverbundfertigbauteils
EP2650094A1 (fr) 2012-03-12 2013-10-16 Munich Composites GmbH Procédé de fabrication d'une préforme
DE102012004942B4 (de) * 2012-03-12 2014-02-20 Munich Composites Gmbh Verfahren zum Herstellen eines Vorformlings und eines daraus hergestellten Faserverbundfertigbauteils
ITTV20130094A1 (it) * 2013-06-10 2014-12-11 Tryonic Ltd Metodo di stampaggio
DE102014208412A1 (de) * 2014-05-06 2015-11-12 Bayerische Motoren Werke Aktiengesellschaft Stützkern und Verfahren zur Herstellung eines faserverstärkten Hohlbauteils
DE102015209918A1 (de) * 2015-05-29 2016-12-01 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines faserverstärkten Hohlbauteils
WO2017148997A1 (fr) * 2016-03-04 2017-09-08 KTM Technologies GmbH Noyau de moule à matériau expansible

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