EP2531335A1 - Procédé de fabrication d'une pièce composite et modèle - Google Patents

Procédé de fabrication d'une pièce composite et modèle

Info

Publication number
EP2531335A1
EP2531335A1 EP11739452A EP11739452A EP2531335A1 EP 2531335 A1 EP2531335 A1 EP 2531335A1 EP 11739452 A EP11739452 A EP 11739452A EP 11739452 A EP11739452 A EP 11739452A EP 2531335 A1 EP2531335 A1 EP 2531335A1
Authority
EP
European Patent Office
Prior art keywords
model
shaped surface
stone
preform
piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11739452A
Other languages
German (de)
English (en)
Other versions
EP2531335A4 (fr
Inventor
Jukka Autio
Risto Kallinen
Harri Piispanen
Lasse Lahti
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.)
Meteco Oy
Original Assignee
Meteco Oy
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 Meteco Oy filed Critical Meteco Oy
Publication of EP2531335A1 publication Critical patent/EP2531335A1/fr
Publication of EP2531335A4 publication Critical patent/EP2531335A4/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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

Definitions

  • the invention relates to a method for manufacturing a composite piece.
  • the manufacturing is carried out employing a model whose outer sur- face is provided with a shaped surface against which composite material is arranged. When the material has hardened, the formed composite piece is detached from the shaped surface.
  • the invention also relates to a model having a shaped surface that provides the piece to be manufactured with a shape.
  • the invention further re- lates to the manufacture and use of the model.
  • the manufacture of these pieces requires a model against which the lamination or moulding is done.
  • the model comprises a model surface that provides the piece to be manufactured with a shape.
  • the model is typically made of polyurethane, epoxy or a similar plastic material, or graphite.
  • a model made of a plastic material requires a good support, such as a metal frame or the like, to sustain forces created during the manufacture.
  • a disad- vantage of plastic materials is that they typically absorb fluid into their structure, which results in poor accuracy of shape and dimensions of the model.
  • An object of the invention is to provide a novel and improved method for manufacturing a composite piece.
  • a further object is to provide a new and improved model, and a method for manufacturing and using the model.
  • the method of the invention is characterized by using a model made of stone and having a new, pre-designed shaped surface formed by removing some of the stone material; and arranging structural layers of the composite piece against the shaped surface of the stone model, the piece to be manufactured thus taking a shape corresponding to that of the shaped surface.
  • the model of the invention is characterized in that the model is made of stone and has a shaped surface of a pre-designed profile formed thereto by machining.
  • the manufacturing method of the model of the invention is charac- terized in that a block of natural stone is used as a preform of the model; and a designed shaped surface is machined by removing material from the stone model preform.
  • the use of the model of the invention is characterized by using a stone model to perform yield moulding, in which the preform material is ar- ranged on the shaped surface side of the model and the preform material is subjected to an increased temperature which causes the preform material to take shape and set against the shaped surface of the stone model.
  • the piece to be manufactured is shaped using a natural stone model having a desired pre-designed shaped surface formed thereto by removing material from the stone model preform.
  • An advantage of this is that a stone model in itself is sufficiently rigid and therefore the model does not need to be supported during use as much as models made of a plastic material, for example.
  • stone is an ecological material.
  • a yet further advantage of stone is that it is non-toxic and inflam- mable. When no longer in use, stone models are easily disposed of.
  • the model is easy to work on, relatively soft, yet at the same time dense natural stone.
  • This type of relatively soft stone is easy and rapid to work on, and therefore the manufacturing costs of the model are affordable.
  • the model does not absorb fluid and thus maintains its properties also if subjected to moisture during the manufacture of the piece. Further, since the stone has a dense and homogeneous structure, a shaped surface with a good surface quality is obtained.
  • the model is soapstone.
  • Soapstone is good in terms of machineability and as a raw material it is relatively inexpen- sive, which makes soapstone cost-effective in the manufacture of different models.
  • soapstone possesses precisely the characteristics required of a good model material. This is because soapstone has good heat- conducting ability and a low thermal expansion coefficient. These properties are advantageous for example in cases where an elevated temperature is used in the curing or shaping of the piece to be manufactured.
  • a soapstone model allows higher temperatures than before to be used in the manufacture, which makes it possible to speed up the manufacturing process.
  • soapstone has a dense structure, and therefore it does not absorb fluid into its structure.
  • the model is made of stone whose properties substantially correspond to those of soapstone.
  • an alternative stone material has properties substantially corresponding to those of soapstone with regard to hardness and density.
  • the thermal ex- pansion coefficient of the stone may substantially correspond to that of soap- stone.
  • the stone model is an elongated piece.
  • the model is made of an elongated " stone preform, i.e. a block, having an orthogonal cross-section.
  • the shaped surface is formed on at least one horizontal surface of the stone block.
  • the shaped surface of the stone model is made using chip removing machining. This allows for a rapid manufacturing of the model and provides a good surface quality.
  • the model is a single uniform piece made of a single stone preform.
  • the model comprises two or more pieces attached together, each piece being of stone.
  • the stone pieces belonging to the model may be of a similar stone material or of different materials.
  • the stone model comprises at least one piece of wear made of a stone material having a good resistance to wear.
  • Granite for example, has a good wear resistance.
  • the stone model comprises means for heating it up.
  • the stone model may be provided with integrated heating chan- nels in which a circulation of a medium may be arranged for heating up the model.
  • the stone model may be provided with drillings or grooves into which heating channels or electric heating cables may be arranged. It is also possible to employ air blowing or steam to provide the heating, the model being in that case provided with suitable channels.
  • a support structure also made of a stone material is provided in association with the stone model.
  • the model comprises at least one core made of stone.
  • the core may be of the same or a different stone grade than the rest of the parts in the model.
  • the model comprises two or more model parts.
  • the model may have a female part and a male part, the piece being formed between them.
  • the model parts may be arranged to move in different directions during a work cycle.
  • the model may also comprise a plurality of parts arranged to open in different directions.
  • the model parts may be of the same or of different stone grades.
  • the stone model is used for making a tool.
  • the tool may be made of a composite material by lamination, for example.
  • the tool can be used for manufacturing actual components, such as machine parts. During its manufacture, the tool is provided with a work surface of a shape that corresponds to the shaped surface of the model. The actual com- ponent can then be formed against this work surface.
  • the actual component may be of a composite material that is laminated or in some other way arranged against the work surface of the work piece, and cured.
  • the tool may be made relatively light so that it is easy to handle during manufacture of even a big component.
  • the model allows a plurality of tools to be manufactured for simultaneous use in production. This allows production capacity to be increased by increasing the number of tools.
  • the original model known as a master model, allows new tools may be manufactured easily and rapidly to replace damaged or worn tools.
  • the model is used for manufacturing large pieces.
  • the large pieces in question include components of aircraft industry and aviation in general, wind power plant components, paper machine parts and large industrial components in general that may be manufactured of a composite material.
  • the composite piece to be manufac- tured which may be a tool or a component, comprises at least one reinforcing material and at least one binding material.
  • the reinforcing material may be fibre reinforcement, such as fibreglass, aramid fibre, carbon fibre or some other suitable synthetic fibre, or even natural fibre.
  • the binding material is a suitable plastic material, such as epoxy or polyurethane resin.
  • the model is a moulding model comprising a shaped surface against which the material for the manufacture of a desired product is mechanically pressed.
  • the shaped surface provides the piece pressed against it with a shape that corresponds to the profile of the shaped surface.
  • the model is a moulding model used in thermal moulding.
  • thermoplastic material such as thermo- plastic plastic
  • the material may be plate-like and may comprise one or more layers.
  • Thermal moulding may also be carried out on a composite plate comprising one or more thermoplastic plastic materials and one or more reinforcements.
  • the model is a moulding model used in mechanical moulding of a composite material.
  • material is mechanically pressed with a presser against the shaped surface of the mould.
  • the material may be subjected to heat during the moulding.
  • the material may also be subjected to a steam jet, or the pressing may be carried out at an elevated temperature and humidity, which often also facilitates the shaping of materials.
  • the material may comprise for example a plural number of wood veneer layers, and adhesive between the layers.
  • the material may comprise a binding agent and coating layers, for example, that may be of a suitable plastic material.
  • the adhesive agent may be a heat-setting plastic material.
  • the stone model is a pressing tool, i.e. a tool known as a block.
  • the model is a moulding model used for mechanical moulding of a metal material.
  • a metal plate is mechanically pressed with a presser against a shaped surface, the plate thus taking a shape according to that of the shaped surface.
  • the shaping may be hydrostatic shaping, where hydraulic pressure is used to press the plate to be shaped against the shaped surface of the model.
  • this embodiment allows aviation industry components made of aluminium, for example, to be shaped against a model made of stone.
  • the stone model is a pressing tool, i.e. a tool known as a block.
  • the stone model has at least one eoat- ing material, such as glass or ceramics, attached to the shaped surface of the model.
  • the coating material has a profile matching to the shaped surface.
  • the coating material may be in a plate-like or powder form, for example in the form of grains or fine powder, and it may be shaped and attached to the shaped surface of the stone model under the influence of temperature in an oven, for example. In that case the coating material sets against the shaped stone surface of the mould.
  • the coating material may attach by the influence of heat or, if necessary, a fastening agent may also be used.
  • the coating material may improve the shape surface with regard to its smoothness, strength, resistance to wear, density and its properties related to detachment.
  • the stone model is a yield moulding model.
  • the preform material In yield moulding the preform material is arranged to the shaped surface side of the model, the preform material being then subjected to an elevated temperature by the influence of which the preform material takes shape and sets against the shaped surface of the model.
  • the preform material In yield moulding the preform material may be arranged on top of the shaped surface of the model, the pre- form thus pressing against the shaped surface by the influence of elevated temperature and gravity. If necessary, the pressing of the preform material against the shaped surface may be enhanced by pressing it with a gas or a fluid blow or a mechanical member.
  • the mechanical member may be a second mould half, which may be of stone.
  • a plate material is formed into a relatively thin shell-type tool by using a yield moulding model made of stone.
  • a yield moulding model made of stone Above the shaped surface of the stone model, one or more plate preforms made of a thermoplastic material may be arranged.
  • the temperature of the plate preform is increased to reduce its yield strength.
  • the temperature of the plate may be increased in an oven together with the stone model. Alternatively, the temperature may be increased by a radiant heater or hot blast, for example.
  • the tool made of the plate preform is then allowed to cool before it is detached from the stone model.
  • the shaped surface formed to the tool may be finished, after which the tool is ready for use as a model to manufacture a shaped piece.
  • the finishing may comprise chip removing machining, polishing and other necessary steps.
  • the plate material may be metal, plastic, glass, or ceramic.
  • a stone model is used to form a tool comprising at least one insert, which is a prefabricated piece not belonging to the basic structure and material of the tool.
  • the insert may be for example a heating element, such as an electric heating cable.
  • This kind of heating element may be arranged to the preform material or between preform plates, whereby it becomes an integral part of the tool.
  • the tool may be made of glass, plastic or ceramic, for example, and the manufacturing may be carried out by the yield moulding described above, for example.
  • the tool is made of glass.
  • the above techniques allow a glass tool to be manufactured rapidly. Moreover, glass is affordable and well available. In addition, glass is dense and has an extremely smooth surface, a piece to be manufactured being thus easy to detach there- from. When a glass tool is used, detaching agents are not necessarily needed at all.
  • a glass tool may have a heating element, such as an electric heating resistance wire, integrated into its structure, which allows the tool to be heated rapidly.
  • a component or a component preform is made of preform material by using a yield moulding model.
  • the component preform may be a machine part, for example, having three dimensional shapes that are difficult to produce by conventional manufacturing methods.
  • the component preform moulded by yield moulding may, if necessary, be finished by chip removing machining and suitable surface finishing.
  • This kind of compo- nent preform may be made of a plate material or powder.
  • the material may be metal, plastic, glass, composite or ceramic.
  • a piece to be manufactured is formed using a stone model comprising a first model half and a second model half.
  • the model halves are provided with shaped surfaces, which together define the shapes of the outer surfaces of the product to be formed. This is what is known as a two-sided model.
  • the model in question allows more complicated shapes to be produced than a one-sided model.
  • Figure 1 is a schematic view of natural stone preforms for producing a model
  • Figure 2 is a schematic view of a model made of natural stone
  • Figure 3 is a schematic view of the arrangement of a composite ma- terial against a shaped surface of a model
  • Figure 4 is a schematic cross-sectional view of the composite piece formed according to Figure 3;
  • Figure 5 is a schematic view of the use of the composite piece of Figure 4 as a tool and the forming of a second composite piece against a work- ing surface thereof;
  • Figure 6 is a schematic cross-sectional view of the second composite piece of Figure 5;
  • Figure 7 is a schematic view of the use of a model made of stone in mechanical moulding
  • Figure 8 is a schematic cross-sectional view of the piece made according to Figure 7;
  • Figure 9 is a schematic view of thermal moulding of composite material by means of a stone model
  • Figure 10 is a schematic view of a stone model comprising a plural number of model parts made of stone and a support structure made of stone;
  • Figures 1 1 and 12 are schematic views of stone models provided with heating means
  • Figures 13 to 16 are schematic views of the use of a stone model in yield moulding
  • Figure 17 is a schematic view of a stone model having a shaped surface that is coated with glass, for example, or with some other suitable coating material;
  • Figure 18 is a schematic view of the forming of a tool by using a stone model and yield moulding, the tool being, in addition, provided with inte- grated heating elements in connection with the manufacturing;
  • Figure 19 is a diagram representing some of the features disclosed in this application and their possible combinations.
  • Figure 1 shows a natural stone preform 1 , i.e. a stone block, of which a model may be made by machining.
  • the preform 1 may be an elongated uniform piece that may have a rectangular cross-section.
  • One or more sur- faces of the preform 1 may be provided with a shaped surface 2 by chip removing machining, as shown in Figure 2.
  • the chip removal may be carried out by a milling machine, for example, or alternatively by planing or by some other appropriate means.
  • the stone material for the preform 1 may be selected so that it is suitable for chip removing machining.
  • the material may be soapstone, or pyrophyllite, which is a metamorphic stone grade. Soapstone contains most- ly minerals of the carbonate group, and talc. Also other stone grades similar to soapstone are well suitable as material.
  • Figure 2 shows a model 3 comprising a shaped surface 2.
  • Figure 2 shows a very simple model 3 and shaped surface 2.
  • the shaped surface of the model may be open, as for example in the solution of the figure, where it is upward open.
  • the model 3 may consist of more than one uniform stone piece, or, alternatively, it may consist of two or more stone pieces attached together.
  • broken lines depict a contact surface 18 of two model parts 3a and 3b attached together.
  • the model parts may be attached by mechanical joining elements or by an adhesive, for example. Particularly when a large product is to be manufactured, it is advantageous to construct the model from a plural number of model parts to be attached together. Smaller model parts are easier to handle, transport and work on.
  • Figure 3 illustrates the manufacturing of a composite piece with a model 3.
  • the model 3 may comprise one or more support surfaces 4 that allow it to be supported to a manufacturing device 5 for the duration of the manufacturing.
  • composite material 6 which may comprise one or more bind- ing agents 7 and one or more reinforcing agents 8.
  • the binding agent 7 may be a plastic material, such as epoxy resin.
  • the reinforcing agent 8 may be a reinforcing fabric, reinforcing gauze, staple fibre, or any reinforcement suitable for the purpose.
  • the reinforcement may be carbon fibre, glass fibre, aramid fibre, or the like.
  • the number of the material layers may be selected separately in each case.
  • the composite material 6 is pressed by force F against the shaped surface 2 so that a composite piece 9 obtains a shape corresponding to that of the shaped surface 2.
  • the composite material 6 is cured.
  • elevated temperature T may be applied to speed up the curing, for exam- pie.
  • the composite material may be applied manually by lamination, for example, or, alternatively, the application of the composite material may a mechanized process.
  • Figure 4 shows a completed composite piece 9 detached from the model 3 and turned upside down. After finishing, the composite piece 9 is ready for use as an industrial component.
  • Figure 5 shows an embodiment, where the method of Figure 3 is used to form a first composite piece 9 that serves as a tool in the lamination of a second composite piece 10.
  • the first composite piece 9, i.e. a tool in this embodiment comprises a work surface 1 1 having a shape that cor- responds to that of the shaped surface 2.
  • Composite material 6 may be arranged against this work surface 1 1 so that a second composite piece 10 with desired dimensions is obtained.
  • the composite material 6 comprises one or more binding agents 7 and one or more reinforcing agents 8, which are arranged into a desired number of layers against the work surface 1 1. During the manufacture the composite material may be pressed against the work surface
  • Figure 6 shows a completed second composite piece 10 detached from the work tool 9. After finishing, the second composite piece 10 is ready for use as an industrial component.
  • Figure 7 shows an arrangement for mechanical moulding.
  • the plate 12 in the form of a plate or web may be moulded into components of a desired profile.
  • the plate 12 is pressed by a presser 13 against the shaped surface 2 of the model 3, the plate 12 being thus moulded and obtaining a shape corresponding to that of the shaped surface 2.
  • the model 3 is made of stone.
  • the presser 13 may comprise a body 14, in which a fluid pressure 15 is acting.
  • the presser 13 may have a moulding part, such as a rubber diaphragm 16.
  • the fluid pressure 15 of the presser 13 moulds the plate 12 against the shaped surface 2. This is known as a hydrostatic moulding of plate.
  • the plate 12 to be moulded may be of metal, such as aluminium or steel, in which case the temperature does not need to be raised.
  • elevated temperature T during the moulding and possibly also elevated humidity H, such as a steam jet.
  • Figure 8 shows a completed component 17 after moulding.
  • FIG. 7 further illustrate an embodiment where a model 3 made of stone may comprise wear pieces 19 in areas susceptible to wear, and the pieces may be of a hard material resistant to wear, such as granite. Other parts of the model 3 may be of a stone grade that is easier to work on. In that case the model 3 comprises two or more stone grades.
  • the wear pieces 19 may be attached in place by mechanical attachment means, I
  • the wear parts 19 may be attached with an adhesive.
  • Figure 9 illustrates the manufacturing of a composite piece by a thermoplastic method and using a stone model.
  • the model 3 may comprise a female model 3c and a male model 3d with shaped surfaces 2c and 2d.
  • a composite plate 20 comprising one or more thermoplastic plastic materials 20a and one or more reinforcing materials 20b is heated and pressed between the model parts 2c and 2d, whereby it obtains the shape defined by the stone model.
  • Figure 10 shows a model 3 comprising three stone model parts 3c
  • the model part 3e is a core attached to the mould part 3d.
  • the mould may also comprise other cores that may be of stone and detached separately from the model when the forming of the product has been formed.
  • Figure 10 also shows that the model part 3d is provided with a sup- port structure 21 which also of a stone material.
  • the model part 3d may be attached to the manufacturing device or the like by this support structure 21.
  • the support structure 21 enables to provide a lighter model part 3d with smaller di- mensions and therefore easier to handle and work on.
  • the support structure 21 may be made of a plurality of support parts 21 a to 2 c that may be attached together by mechanical fastening members, form locking or adhesive. Further, the support structure 21 may be attached to the model part 3d by screw attachment, quick-release members, adhesive or some other suitable means.
  • Figure 1 1 shows a model 3 provided with channels 22 where heating medium, such as oil, water or other fluid, may be circulated. Further, it is possible to blow hot air into the channels or guide steam therein.
  • the channels may be drillings made into the stone model and as such they may serve as channels carrying a medium, or the drillings may be provided with tubes, such as plastic tubes, in 'which the medium is carried. Further, it is possible to arrange into the channels 22 an electrical heating cable or some other heating resistor.
  • Figure 12 shows an alternative arrangement for heating the model 3.
  • the model 3 may be provided with grooves 23 forming channels for the heating means.
  • the grooves may be formed on an outer surface of the model 3. If the model 3 comprises two or more model parts 3a, 3b, grooves 23 may also be formed to their joint surface.
  • the grooves 23 may be provided with tubes for circulating heating medium, or they may be provided with heating resistors.
  • this kind of heating block may be attached to the model part comprising the shaped surface.
  • the surface of the end product moulded with the stone model may be left with a microscopic structure characteristic of the stone material of the model and detectable also afterwards.
  • the plate to be moulded may be of a thermoplastic plastic material, in which case the plate is subjected to an elevated temperature during the moulding.
  • Figure 13 shows a stone model 3 with a three dimensional shaped surface 2 formed thereto to form a desired end product or tool.
  • Figure 14 shows that on the side of the shaped surface 2 of the stone model 3, in this case above, one or more preform plates 24 may be arranged. After that, the stone model 3 and the preform plate 24 may be placed into an oven, or the temperature T of the preform plate may be raised in some other manner so that its yield reduces by the influence of the temperature, and the material becomes easier to mould.
  • the preform plate 24 may press against the shaped surface 2 by the influence of gravity, as shown in Figure 15.
  • Figure 16 shows that the preform plate 24 obtains a profile corresponding to the shaped sur- face.
  • the shaped preform 25 may then be detached from the model 3 and subjected to a finishing and post-treatment in a desired manner.
  • a powdery preform material 26 may be used, as illustrated in Figure 14.
  • the preform material 24, 26 may press against the shaped surface 2 by the influence of gravity, or it may be subjected to an external force effect P, such as a gas blow.
  • Figure 17 shows a stone model 3 whose shaped surface 2 is coated with e.g. glass, ceramic or some other material improving one or more features of the model.
  • the coating 27 may be formed by yield moulding, for example.
  • Figure 18 shows a tool 9 made with the stone model 3 and having a heating cable 28 integrated into its structure.
  • the tool 9 may be e.g. glass or ceramic, and may be formed by yield moulding, for example.
  • Figure 19 shows a simplified diagram of the above features.

Abstract

L'invention concerne un procédé de fabrication d'une pièce composite, un modèle et un procédé de fabrication et d'utilisation du modèle. Le modèle (3) est fait de pierre naturelle, à partir de laquelle de la matière est enlevée pour former une surface façonnée (2), une matière (6, 12, 24, 26, 27) étant placée contre la surface afin de prendre une forme correspondant au profil de la surface façonnée. Le matériau du modèle peut être de la saponite. Le modèle peut être un modèle de stratification, contre lequel la surface façonnée d'une matière composite (6) est stratifiée.
EP11739452.8A 2010-02-05 2011-02-04 Procédé de fabrication d'une pièce composite et modèle Withdrawn EP2531335A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20105115A FI20105115A (fi) 2010-02-05 2010-02-05 Menetelmä komposiittikappaleen valmistamiseksi sekä malli
PCT/FI2011/050101 WO2011095699A1 (fr) 2010-02-05 2011-02-04 Procédé de fabrication d'une pièce composite et modèle

Publications (2)

Publication Number Publication Date
EP2531335A1 true EP2531335A1 (fr) 2012-12-12
EP2531335A4 EP2531335A4 (fr) 2013-09-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11739452.8A Withdrawn EP2531335A4 (fr) 2010-02-05 2011-02-04 Procédé de fabrication d'une pièce composite et modèle

Country Status (3)

Country Link
EP (1) EP2531335A4 (fr)
FI (1) FI20105115A (fr)
WO (1) WO2011095699A1 (fr)

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US1239152A (en) * 1916-03-31 1917-09-04 B R Greenblatt Art of molding.
GB780677A (en) * 1955-05-13 1957-08-07 H I Thompson Fiber Glass Co Improvements in or relating to process and apparatus for making reinforced plastic bars, tubes and like elongated stock
US3035310A (en) * 1956-01-23 1962-05-22 Republic Aviat Corp Method of making reinforced synthetic resin forming tool
US4737211A (en) * 1986-11-10 1988-04-12 The United States Of America As Represented By The Secretary Of The Navy Process for fabrication of graphite/epoxy tools
US20050183818A1 (en) * 2004-02-25 2005-08-25 Zenkner Grant C. Apparatus and methods for processing composite components using an elastomeric caul

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Title
See also references of WO2011095699A1 *
Sharaon: "Half of a mould, Steatite, Syria", , 9 April 2009 (2009-04-09), XP002710718, Retrieved from the Internet: URL:http://www.themouldinfo.com/2009/04/half-of-mold-steatite-syria.html [retrieved on 2013-08-08] *
sharon: "Pewter casting in stone moulds", , 11 February 2009 (2009-02-11), XP002710719, Retrieved from the Internet: URL:http://www.themouldinfo.com/2009/02/pewter-casting-in-stone-moulds.html [retrieved on 2013-08-01] *

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WO2011095699A1 (fr) 2011-08-11
EP2531335A4 (fr) 2013-09-25
FI20105115A0 (fi) 2010-02-05
FI20105115A (fi) 2011-08-06

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