[go: up one dir, main page]

WO2000071329A1 - Procede et dispositif pour le moulage de materiaux composites - Google Patents

Procede et dispositif pour le moulage de materiaux composites Download PDF

Info

Publication number
WO2000071329A1
WO2000071329A1 PCT/NO2000/000166 NO0000166W WO0071329A1 WO 2000071329 A1 WO2000071329 A1 WO 2000071329A1 NO 0000166 W NO0000166 W NO 0000166W WO 0071329 A1 WO0071329 A1 WO 0071329A1
Authority
WO
WIPO (PCT)
Prior art keywords
mould
vacuum bag
seal
vacuum
thermoplastic
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/NO2000/000166
Other languages
English (en)
Inventor
Pål Francis HANSEN
Ulf Tolfsen
Bjørn PETTERSEN
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.)
ADVANCED COMPOSITE ENGINEERING AS
Labyrint Dev AS
Hiform AS
Original Assignee
ADVANCED COMPOSITE ENGINEERING AS
Labyrint Dev AS
Hiform AS
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 ADVANCED COMPOSITE ENGINEERING AS, Labyrint Dev AS, Hiform AS filed Critical ADVANCED COMPOSITE ENGINEERING AS
Priority to EP00927986A priority Critical patent/EP1189743A1/fr
Priority to DE1189743T priority patent/DE1189743T1/de
Priority to AU46288/00A priority patent/AU4628800A/en
Publication of WO2000071329A1 publication Critical patent/WO2000071329A1/fr
Priority to NO20015456A priority patent/NO318482B1/no
Anticipated expiration legal-status Critical
Priority to NO20024788A priority patent/NO20024788D0/no
Priority to NO20024787A priority patent/NO331216B1/no
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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B29C70/465—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating by melting a solid material, e.g. sheets, powders of fibres
    • 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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding

Definitions

  • the present application concerns a procedure and devices required for the vacuum moulding of fibre-reinforced composite materials.
  • the invention also comprises a procedure for moulding a vacuum bag, which will be employed at such thermoplastic composite moulding.
  • Fibre-remforced, tempered plastic is elaborately described m the book Jansson, Jan-Fred ⁇ k et al . , 1979. "Fiberarmerad hardplast”, Ingenjorsforlaget, Swiss.
  • a well-known method for forming moulds is to make them m steel or other types of metal.
  • Such metal moulds are very durable and well suited for large series of composite moulded parts, for instance for the car industry.
  • one solution is to polish the inside of the mould.
  • Composite materials today have ever increasing applications, from cars, vessels, trains, aeroplanes, windmills and sports and leisure equipment, to footwear, X- ray tables, engine parts, pipes, tanks, etc. The application is mostly based on a requirement for high strength and low weights, with minimal consumption of materials.
  • Such composites are formed m fibre reinforced plastic laminates, where the fibres could be glass, carbon, aramid, etc., while the plastic materials mostly would be polyester, epoxy, vmylester or phenolic resin systems.
  • the fibre component reinforces the laminate after the plastic has been cured, and provides the basis for the strength of the laminate.
  • the function of the plastic is to keep the fibres m place within the geometry of the product, and very often also provides the outer finish of the product, like colour and a smooth surface.
  • composite products are manufactured by means of several application methods and techniques, depending on the size of the series, weight/strength requirements and financial considerations.
  • the plastic component must be applie ⁇ in liquid form to impregnate the fibres. This may be done by means of spraying equipment, application by nand, vacuum injection or pre-impregnatmg (so-called "prepreg") .
  • prepreg a pre-impregnated fibre m refrigerated condition is delivered, where the impregnation is semi-stiff, e.g.
  • the refrigerated pre-impregnated fibre mats are then placed m moulds and covered by a vacuum bag. Subsequently, when a state of vacuum has been established, they can be heated to a curing temperature of approx . 80 degrees C and then cooled down to a finished mould of composite material.
  • a release agent is placed over the fibre mat, on top of that a "breather” mat, and finally a vacuum bag. Vacuum is applied to the mould by means of e.g. a vacuum bag described m the US patent 5 702 663. In this process, polyester is suctioned into the fibre mat. When the polyester has set, the release agent, the breather mat and the vacuum bag can be pulled off the composite material, and the half-finished composite material can be removed from the mould by means of pressure air or mechanical power.
  • a similar method to sc ⁇ mp-moulding is a so-called RTM- mouldmg, where one employs an arrangement of reinforcement fibre inside a bilateral hollow mould. Vacuum is applied into the layer of reinforcement fibre, and when the vacuum level is satisfactory, resin is pressed inside using e.g. 2 bar.
  • Vacuum is applied into the layer of reinforcement fibre, and when the vacuum level is satisfactory, resin is pressed inside using e.g. 2 bar.
  • the existing manufacturing processes have many disadvantages, with regard to environmental issues.
  • the plastics which are used are chemicals m liquid form, which contain substances that represent a health risk m the working environment, and which pollute the external environment. This situation requires large investments m ventilation and cleaning equipment. The substances may also cause serious allergy problems for many people.
  • the heat produced can reach ignition temperature, and constitutes a fire hazard if used carelessly.
  • the number of required tools and equipment constitutes a large consumption of materials, and the equipment often needs to be cleaned with solvents which again represent a nealth profundard.
  • thermosettmg plastics cannot be recycled or used for other purposes. Furthermore, the quality of the laminates is very dependent on the skills of the operator, and the properties of composites based on thermosettmg plastics can vary a lot. Quality assurance of the moulding process requires careful training, thoroughly established procedures, frequent inspections, as well as testing of the finished products, raw materials and process parameters, such as air humidity and temperatures.
  • hybrid yarn which is made up of two or more different fibre filaments.
  • Several methods are used to produce this hybrid yarn, among others by means of texturing machines for yarn.
  • This type of yarn has a good mixture of the different material components, which is an important premise for using this commingled yarn m the composite production.
  • thermoplastic fibre with glass fibre, or thermoplastic fibre with carbon fibre.
  • postpreg By weaving, knitting or making felt of this yarn (“postpreg") , fibre reinforcements m rolls can be produced according to required configurations and specifications (within the given limitations of machines and equipment) . From such fibre reinforcements, it is possible to produce e.g. glass fibre reinforced composite laminates with thermoplastic matrix. This is done by placing fibre reinforcements m a mould m as many layers and m the desired fibre directions required for the product to be dimensioned for the design loads.
  • This composite laminate achieves strength properties on a level with the best types of reinforced thermosettmg plastics.
  • one or more layers with different functions release, breather, vacuum, etc.
  • the mould containing reinforcements and foil is heated up to the consolidation temperature, by means of e.g. convection heat from a burner, or from infrared heat (IR) .
  • the thermoplastic fipres will melt and form a matrix for the glass fibres (or other strength carrying fibres), with no air pockets.
  • the product is finished, and after a cooling period, can be removed from the mould ready for further refining. Based on this manufacturing method it is possible to build products and constructions in sizes which are only limited by moulds and heating systems, and which can replace the manufacturing processes that are based on thermosettmg plastics .
  • This invention concerns a vacuum-baking process for moulding composite fibre materials, where there is no need for vacuum-injection of resin into the fibre mat.
  • the invention comprises a disposable breather.
  • the invention comprises a vacuum bag with integrated vacuum canals.
  • the invention comprises a so-called release film with integrated vacuum canals.
  • the invention comprises flange arrangements, vacuum seal, vacuum bags and accessory elements.
  • the invention also comprises a procedure for making a ceramic mould for casting fibre composite materials.
  • the invention furthermore comprises alternative procedures for making moulds for the purpose of casting fibre composite materials by means of thermal spraying of sintered metal on a model which is a copy of the product.
  • a short summary of the invention comprises in its simplest embodiment a method or process for manufacturing fibre reinforced composite materials with thermoplastic material devised to form a matrix intended for filling and binding a fibre reinforcement in a mould, by the following steps:
  • the fibre reinforced mat consist of the fibre reinforcement and an integrated thermoplastic material, which at room temperature is solidified and which is designed to become plastic at an elevated temperature Tp ;
  • the methode for manufacturing fibre reinforced composite material laminates comprises the following steps:
  • thermoplastic material designed to constitute a matrix, for the purpose of filling and binding the fibre reinforcement .
  • a fibre reinforced mat including the fibre reinforcement, with integrated thermoplastic material, which at room temperature is solidified and which is designed to become plastic at a rise temperature to Tp ;
  • the vacuum bag, tne "breather”- mat and release film are removed from the composite material, and the composite material laminate is removed from the mould.
  • the invention also comprises a vacuum bag, for moulding composite material against a mould, with a flange and a flange surface.
  • the vacuum bag has a surface cast the same mould, a vacuum seal system with a surface designed to fit the flange surface the mould, and where the new vacuum bag and the seal system are made up of one and the same integrated moulded element.
  • the invention furthermore comprises a moulding profile for casting a seal system for a vacuum bag, which is designed to fit against the flange surface of the mould, comprising; an underside designed to fit against the flange surface, a top area designed to form a contact surface m the seal system, and a (first) inner longitudinal groove m the top surface, designed to form a (first) inner seal profile (143), as an integrated elevation m the contact surface, and to form a vacuum canal inside the first inner seal profile.
  • a moulding profile for casting a seal system for a vacuum bag which is designed to fit against the flange surface of the mould, comprising; an underside designed to fit against the flange surface, a top area designed to form a contact surface m the seal system, and a (first) inner longitudinal groove m the top surface, designed to form a (first) inner seal profile (143), as an integrated elevation m the contact surface, and to form a vacuum canal inside the first inner seal profile.
  • the invention also comprises a procedure to form a vacuum bag with a vacuum seal system where the contact surface is designed to fit against a flange surface of a flange on a mould, which is designed for moulding composite materials, and comprising the following steps:
  • the profile has a top area, a (first) inner longitudinal groove m the top area, designed to form a (first) inner seal profile as an elevation m the contact surface, and to form a vacuum canal within the first inner seal profile;
  • thermosettmg plastic production which are manufactured by means of vacuum baking fibre reinforced thermoplastic laminates by using this method, have none of the environmental problems suffered by the thermosettmg plastic production. They do not produce gasses during manufacturing, require no hand tools or equipment which need cleaning, do not emit dust when being handled, represent no fire hazard, and the materials may be recycled after being discarded.
  • Another significant advantage is that fibre reinforced thermoplastic laminates, by means of vacuum and heat, can be formed after the laminate is consolidated. This presents the possibility for pre-fabrication of laminates, and manufacturing of the finished product with m-house post- moulding machines and equipment. The result is a process that ensures considerable financial advantages by reducing the cycle time considerably.
  • the laminates will have a much better quality, because the fibre and plastic component are mixed m advance, and the consolidation is not dependent on the skills of the operators.
  • the manufacturing process is dependent on materials, tools and procedures which ensures that the component has the required finish and properties, that the vacuum is satisfactory, and that they can withstand the process temperatures which are required to ensure that the consolidation is carried out throughout the laminate.
  • Fig. la is a survey layout of composite moulding, by means of the existing technique. It illustrates a section of a mould together with the layer arrangement of the necessary materials, mats and vacuum devices which are part of the ordinary process, where resm is vacuum injected into the glass fibre reinforcement when vacuum has been applied.
  • Fig. lb illustrates a sectional drawing of a part of a mould, with the division, layer by layer, of materials and air canals that form part of a moulding process, according to a preferred embodiment of the invention.
  • Fig. 2 is a principle sketch of moulds formed by, a: thermal spraying on a model or a template; b: a ceramic mould, formed on a model; c: a "numerical" thin sheet mould, based on a numerical model of the desired form of the composite material laminate which is to be manufactured.
  • Fig. 3 illustrates a mould m sections, placed m a frame with flexible holders for the mould.
  • Fig. 4a illustrates an oven for placing the frame with the mould m, according to the invention.
  • Fig. 4b illustrates a frame with a heating device with infrared heating lamps, for melting the matrix material m the fibre reinforcement which has been placed m the oven.
  • Fig. 5a illustrates a cooling device with air nozzles, for cooling the melted composite material m the mould.
  • Fig. 5b illustrates cooling canals according to the invention, which are designed to cool the melted composite material m the mould.
  • Fig. 6a illustrates a section of a mould with release coating according to the invention; with an arrangement of colour/ structure film and a fibre reinforcement/thermoplastic mat according to a preferred embodiment m the invention.
  • Fig. 6b1 and 6b2 illustrate m sections a mould with release coating, and the spraying of a top coat system directly into the mould before inserting fibre reinforcement/thermoplastic mat, according to a preferred procedure m the invention.
  • Fig. 7a illustrates a section of a pre-moulded fibre reinforced thermoplastic composite element.
  • Fig. 7b illustrates the heating of, and the placing of the thermoplastic composite element over a secondary mould, e.g. by means of vacuum.
  • Fig. 7c illustrates the resulting remoulded thermoplastic composite element.
  • Fig. 8a illustrates m sections the splicing or welding of thermoplastic composites by means of heating device.
  • Fig. 8b illustrates m sections the splicing or welding of thermoplastic composites by means of an ultrasound heating device.
  • Fig. 8c illustrates m sections the welding of a thermoplastic composite element to another thermoplastic composite element by means of a heating device and a welding rod containing thermoplastic material.
  • Fig. 9a illustrates an alternative preferred embodiment of the invention, with integrated vacuum canals on the underside of the vacuum bag, so that the breather mat is somehow integrated with the vacuum bag.
  • Fig. 9b illustrates an alternative preferred embodiment of the invention, comprising a separate breather mat between the release film and the vacuum bag.
  • Fig. 9c illustrates an alternative preferred emoodiment of the invention, comprising an integrated breather/slip mat under the vacuum bag.
  • Fig. 10 illustrates a summary of the procedures of the process, according to the invention.
  • Fig. 11 illustrates a section of a mould and its flange, as well as a vacuum bag; according to the invention with an integrated vacuum seal system, together with devices for forming a vacuum bag such as this.
  • Fig. 12 illustrates a section of the flange area of a mould, according to the invention designed to form a vacuum bag with integrated seal flange.
  • Fig. 12b illustrates how a moulding list can be spliced before the vacuum bag seal is formed.
  • Fig. 13 illustrates a section of a mould with the vacuum bag according to the invention, into which have been placed materials for moulding a fibre composite, and where the vacuum bag has been placed tightly against the composite materials and the flange of the mould.
  • One preferred embodiment of the invention comprises a moulding process for fibre reinforced composite material elements. Reference is made to fig. lb regarding the description following below. The following steps and remedies are included m the moulding process:
  • a single sided mould 1 is formed, preferably coated with a release layer 30, further described below.
  • vacuum devices are used, comprising a vacuum bag 2, a release film 3 and vacuum suction devices 4 for evacuating air from a fibre reinforcement 5.
  • a breather layer 6, guidmg the air 7 out between the release film 3 and the vacuum bag 2, and a matrix 8, designed to fill the fibre reinforcement 5.
  • the new aspects of the process comprise the following aspects:
  • the fluid-proof release sheet 3 must be sufficiently elastic to avoid a lack of flexibility in the composite material arrangement, primarily to prevent so-called "bridge-forming" in sharp nooks and corners, where the fibre reinforced thermoplastic mat 5,8,80 could be difficult to pull towards the mould 1, using just vacuum suction. To overcome this, one could apply a certain overpressure outside the thermoplastic mat to press the fibre reinforced thermoplastic mat 5,8,80 against the mould 1.
  • thermoplastic/fibre reinforcement mat 5,8 in a per se familiar manner, is heated up by means of heating devices 16, until the thermoplastic fibres 8 become liquid and envelopes the reinforcement fibres 5.
  • thermoplastic 8 and fibre reinforcement 5 in a per se familiar manner, is cooled until the thermoplastic 8 solidifies and binds the enveloped reinforcement fibres 5, forming a solid thermoplastic-filled fibre reinforced composite material element 9.
  • thermoplastic mass 83 there is a risk of mobilise a little thermoplastic mass 83 near the outlet 40 for vacuum.
  • a disposable breather 10 has been arranged, designed to be fitted during the instalment of the reinforced thermoplastic /reinforcement fibre mat 8,5.
  • the fitting must be carried out before the heating phase of the moulding process, under the vacuum bag 2, m the areas 54,84 of the thermoplastic/reinforcement fibre mat 5,8, near the outlets 40, against the vacuum suction devices 4, see fig. lb.
  • the disposable breather 10 is adapted for draining and absorbing any surplus thermoplastic material 83 turning mobile and moving towards the vacuum outlet 40 during melting.
  • the requirements for the disposable breather 10 are that it must stay porous under the kind of pressure which is produced by the vacuum bag during vacuum, and that it can tolerate the temperatures which the thermoplastic will be exposed to during the at melting process.
  • the disposable breather can be held against the mould and the vacuum suction devices 4,40 by means of suction, during the positioning of fibre reinforcement.
  • Fig. lb further illustrates that m the moulding process an integrated thermoplastic/fibre reinforced mat can be used, with reference number 80, and also with the reference numbers 8,5, where thermoplastic material 8 is integrated m solid form m the fibre reinforcement 5.
  • the thermoplastic material is, preferably m filament or fibres 88, adapted to become plastic at an increased temperature Tp over approx. 200°C, e.g. a thermoplastic/glass fibre mat 81 or a thermoplastic/carbon fibre mat 82;
  • Fig. 2c illustrates one of the alternative preferred embodiments of the invention's moulding process, where a mould 1 is employed, designed as a so-called numerically manufactured thin plate mould 11, from a numerical model of one side of the required composite material element.
  • An alternative to a numerically manufactured thin plate is a hydro formed thin plate, hydraulically pressed into an existing thick, strong master metal -form, which is expensive and unnecessarily demanding.
  • Fig. 2b illustrates another of the preferred embodiments of the moulding process, according to the invention, where a mould 1 is used, which is designed as a ceramic mould 12 from a template or model, reference number "0", of one side of the desired composite material.
  • a mould like this may be manufactured from ceramic mortar, for instance the ceramic mortar which is used for building moulds for metal melting pots. Ceramic material could include ferro silicone, silicone carbide, silicone dioxide and/or may be mixed with other oxides and/or with sand and/or conducting metal powder.
  • Ceramic material could include ferro silicone, silicone carbide, silicone dioxide and/or may be mixed with other oxides and/or with sand and/or conducting metal powder.
  • a separate inner reinforcement is formed in the ceramic mould.
  • Fig. 2a illustrates a third alternative preferred embodiment of the invention, where a mould 1 is employed, which is designed as a thermally sprayed mould 13, by means of sintered metal against a template or model "0" of one side of the desired composite material- element 9.
  • the process of thermal spraying is carried out by blowing a mixture of sintered metal, using e.g. a nozzle driven by propane gas, on the surface of a template 0, as described in US 5 296 667: (Flame Spray Industries) "High velocity Electric-Arc Spray Apparatus and Method of Forming Materials” .
  • the thermal spray-moulding may be carried out by means of metals, which, in the case of thermal spraying techniques using high-voltage electric arc or powder spraying with inflammable gas, are moulded around the template 0.
  • the template has been treated with a release agent to assure a non-sticky surface between the template and the mould 1.
  • a numerical thin plate mould 11 will normally be too weak to be used without a support frame.
  • a ceramic mould 12 and a thermally sprayed mould 13 will both normally be too brittle to be used without a support frame.
  • a support frame, which can satisfactorily hold at least the three different types of mould, is frame 15 as illustrated in fig. 3.
  • the frame 15 is supporting the mould 1,11,12,13, preferably with flexible support devices 14, which are designed to absorb some of the thermal form changes or tensions which may arise during heating and cooling in the moulding process.
  • the mould 1,11,12,13 is coated with a permanent release layer 30 in the form of polytetrafluor ethylene 30, also called PTFE or "Teflon", or an equivalent material for the release layer 30.
  • the mould 1,11,12,13 and preferable the release layer 30, is coated with a colour topcoat or structure layer 32. This layer is able to adhere to the thermoplastic/fibre reinforcement mats 80; to the fibre reinforcement 5; or to the thermoplastic material 8, order to form an integrated coloured top layer or structured surface of the finished composite material laminate 9.
  • An alternative embodiment of the invention may be carried out as shown fig. 6a, by coating the mould 1,11,12,13, and preferentially the release layer 30, with a film, foil, textile (felt or woven or knitted) or a membrane, comprising the colour or structure layer 32.
  • Another alternative embodiment of the invention may be carried out as shown m fig. 6b and 6c, by spray coating the mould 1,11,12,13, and preferably the release layer 30, with a spray nozzle 34, or painting it with the colour or structure layer 32.
  • the colour or structure layer 32 can be composed of a powder or granulate which adheres to the surface of the mould by means of heat, electric fields or with adhesive agents, and can comprise materials which can melt to give the desired colour and finish.
  • a colour agent like this can comprise acrylic colour, coloured thermoplastic, transparent varnish powder, coloured polyester, or epoxy. It is also possible to use a colour pigment agent mixed with a binding agent.
  • a colour agent base 32 which is sprayed on by means of electrostatics, and where the colour agent and the mould have been given opposite electrical charges during the spraying process, will be mechanically weak. It would scratch easily, and even risk being swept off the mould when adding the next layer of the moulding process, which will consist of fibre material.
  • the colour agent layer 32 may be partially melted by means of heat before any further lay-up is carried out. In this way, the colour agent 32 will achieve the structural strength required to endure further addition of the thermoplastic/fibre reinforcement mat 8,5,80.
  • thermoplastic/fibre reinforcement mat 8,5,80 can be carried out m various ways. It is important that the heating of the thermoplastic material 8 is carried out gradually, so that essentially all of it reaches the melting temperature simultaneously and that as little as possible of the thermoplastic material 8 becomes of too low viscosity. The viscosity changes over a certain span of temperature. However, employing a completely fluid proof release film 3, according to a preferred embodiment of the invention, the problem with the mobilisation of the thermoplastic material 8, is practically eliminated. Any possible mobilised melted thermoplastic material could entail a problem, which generally can be isolated to the areas 54,84 around the vacuum suction 40, where the local disposable breather 10 drains any mobilised melted surplus thermoplastic mass.
  • thermoplastic/fibre reinforcement mat 8,5,80 can be carried out by means of heating devices 16 inside a closed oven 20, see fig, 4a, preferably using hot air fans 21 to distribute the heat energy.
  • a closed oven 20 see fig, 4a, preferably using hot air fans 21 to distribute the heat energy.
  • One advantage of using this type of closed oven is that a good distribution of heat is achieved, thereby achieving an overall simultaneous melting of the thermoplastic material 8.
  • thermoplastic material 8 there is no longer required that the reinforcement fibre bearing mat 5,8,80 is permeable to the melted thermoplastic 8, as this is basically already located near its intended place between and around the reinforcement fibres.
  • One alternative could be to employ microwaves for selective heating of the relatively small amount of thermoplastic material 8, m order to save energy m not directly heating other elements m the process, e.g. the fibre reinforcement 5, the mould 1, or the accessory mats, which all can have a chemical compound that is totally different from the thermoplastic material.
  • the heating of the thermoplastic/ (fibre reinforcement)- mat 8, (5) , 80 is carried out by means of heating devices 16, comprising heat lamps 22, preferably with infrared radiation as illustrated m fig. 4b.
  • heating devices 16 comprising heat lamps 22, preferably with infrared radiation as illustrated m fig. 4b.
  • One advantage achieved by employing heat lamps 22, is that the heat is more localised, and to a less extensive volume than the volume which is heated a closed oven.
  • the frame 15 to melt the thermoplastic material 8 m the thermoplastic/fibre reinforcement mat 80.
  • An alternative type of heating lamp 22, could be a microwave radiating device, which m a wavelength adjusted design essentially only heats up the thermoplastic material 8, and which does not heat up the reinforcement fibre 5 and the mould 1.
  • thermoplastic material has melted and enveloped the reinforcement fibres 5, "5,8" now constitutes a composite material element 9, which for various reasons needs to be cooled quickly; homogeneity of the thermoplastic material, and to prevent crystallisation of the thermoplastic material. Also, to be able to carry out a quick production process with low cycle time per processed composite material element 9.
  • the cooling of the thermoplastic /(fibre reinforcement) mat 80 is carried out by means of cooling devices 17.
  • These devices comprise several cold air nozzles 171, which are spread all over the fibre reinforced thermoplastic lay- up 5,8,80, and also over the backside of the mould 1, in order to achieve a two-sided cooling.
  • One alternative, or supplementary, cooling method is to accomplish the cooling of the composite material element 9, illustrated m fig.
  • cooling devices 17 comprising cooling tubes or cooling canals (or heating canals) 172, which are integrated m the mould 1 and adapted for circulating cooling agents (cooling gas or cooling liquids like air, water or oil-based agents) 173.
  • the same cooling canals 172 may also be employed as heating canals 172 when the mould is heated to melt the thermoplastic material 8, as described above.
  • the integrated cooling canals 172 in the mould 1 can be formed by means of materials like wax or plastic or metal rods, which will melt at a lower temperature than the mould 1, thus creating the cooling canals when the fusible materials melt is tapped or drained out. Dielectric high- frequency fields can be used for heating the thermoplastic material .
  • the post-moulding of the finished composite material 9 is illustrated in fig. 7.
  • the post-moulding is carried out, by heating up the composite material element 9 comprehensively, or locally, by means of a heating device 16', until a local softening occurs.
  • the composite material element 9 can then be pulled and adjusted to form, by means of vacuum suction devices 4' over a mould 1', with subsequent new active or passive cooling to ensure that the re-moulded composite material element 9' is solidified/tempered.
  • One way of preparing for such post-moulding is to make a reinforcement which is adjusted by a tighter or skimpier laying-up of the fibre reinforcement 5 in the areas intended for post-moulding. This should already be done at the start, when the thermoplastic /fibre reinforcement mat 5,8,80 is positioned in the mould 1. Also the orientation of the fibre reinforcement 5 can be adjusted for this type of post-moulding. This way, a smooth and adjusted reinforcement is achieved, even where it is pulled over the edges and corners of the post-moulded composite material element 9.
  • a vacuum bag 2 is employed, with a connected network of furrows which make up the integrated vacuum canals 26, on the underside of the vacuum bag.
  • the integrated vacuum canals 26, can be used because of the presence of the seal release film 3 which will ensure that there is no danger of leaking from melting or surplus thermoplastic mass 83 through the release film 3, and the breather mat 6 could therefore become unnecessary.
  • the vacuum bag 2 can be moulded on separate fibre reinforcements to form the vacuum canals 26 m the surface, for the purpose of vacuum distribution, where these fibre reinforcements are made of PTFE or similar, to release the foil after spraying.
  • the ordinary lay-up is employed, using separate breather mat 6 between the release film 3 and the vacuum bag 2, as illustrated m fig. 9b.
  • the release film is designed to work as a seal .
  • the vacuum bag itself can be equipped with heating and cooling devices, for instance canals 172' for circulating the cooling or heating liquids 173', which could be identical to the cooling or heating liquid 173.
  • electrical conductors 172" can be applied.
  • an integrated breather / release layer 6, 3 under the vacuum bag is employed, as illustrated m fig. 9c.
  • the flange arrangements m the moulds, as well as the attachment devices for the various mats and layers to be attached to the profiles or vacuum pipes, and/or attached under clamp seals for the vacuum bag, are only outlined m fig. lb, but described more m detail below, m connection
  • a mould is built on the model, made of material suitable for heating; e.g. ceramic, or metal based, or from other types of material.
  • a release agent is applied to the mould, based on temperature resistant wax, or chemically based agents, or permanent release film, preferably teflon. * The mould is built complete with reinforcements, flange arrangements, vacuum pipes, couplings and seals for release films.
  • Vacuum foils, vacuum distribution layers and release film are prepared and adjusted to fit the mould. * A material, which will provide the finished composite laminate with the required surface, is prepared and applied to the mould.
  • thermoplastic fibre ana reinforcement fibre e.g. glass fibre
  • the fibre reinforcement can be attached to and hung m the mould m the vacuum distribution layer along the edges, or attached to separate profiles which are integrated m the mould.
  • the mould is connected to the vacuum installation and vacuum is applied until a minimum of 85-90- vacuum has been achieved.
  • Pressure sensors are placed on critical spots m the mould.
  • Under vacuum the whole mould and materials are placed an electric or gas fuelled oven, which can be pre-heated, or exposed to IR heat from suitable IR lamps .
  • Fig.11 illustrates a section of a mould and its flange, as well as a vacuum bag according to the invention with integrated flange seal, and the arrangements required for moulding such a vacuum bag.
  • Fig. 12 illustrates a section of the flange area of a mould according to the invention, designed to form a vacuum bag with integrated flange seal.
  • Fig. 13 illustrates a section of the mould with the vacuum bag according to the invention, where materials for moulding a fibre composite have been placed, and where the vacuum bag has been placed tight as a seal against composite materials and the flange of the mould.
  • Fig. 11 illustrates a vacuum bag 2 for moulding composite materials 9, against a mould 1 with a flange 110 with a flange surface 111, where the vacuum bag has a moulded surface 2f and a flange seal 120 with a surface 121 arranged to fit the flange surface 111.
  • the new idea according to the invention is that the vacuum bag 2 and the flange seal 120, is made up of one and the same integrated moulded piece 158.
  • the integrated vacuum bag 2 and the flange seal 120 are formed by one heat resistant and elastic material, which regains its form after stretching, preferably silicon.
  • a first, internal seal 143 has been formed. This is made up of an integrated elevation in the same piece of moulded vacuum bag 2,158, arranged along the surface 121 of the seal flange 120, designed to close and seal the room between the mould 1 and the vacuum bag 2.
  • a second, outer seal 145 is made up of an integrated elevation 145 outside the first, inner seal 143, arranged along the surface 121, and designed to form and close a hollow space 147. This is formed on the outside of the first inner seal 143, where the hollow space is defined by the surface 121, the first inner seal 143 and the flange surface 111, by means of placing the seal flange 120 against the flange 110 on the mould 1.
  • the outer seal 145 forms a wall in, and closes, a hollow space 147, which is defined by the flange surface 111, the surface 121 of the seal flange 120, and the first, inner seal 143. In that way, using vacuum pumping, vacuum is achieved between the inner seal 143 and the outer seal 145, so that the seal flange 120 is sucked tight to the flange 111.
  • a reinforcing profile 114 for the seal flange 120 has been arranged, to function as a brace for the seal flange 114 against the flange surface 111.
  • the stiffening profile 114 for the seal flange 120 has been placed over the inner seal 143, in order to brace the first, inner seal 143 against the flange surface 111.
  • the reinforcing profile 114 is, in a preferred embodiment, broad enough to also cover the outer, second seal 145, simultaneously bracing the outer, second seal 145.
  • the stiffening profile 114 is positioned, enveloped entirely inside the seal flange 120.
  • the reinforcement supports 117 which are designed to support the stiffening profile 114 when the liquid mass is being applied.
  • the reinforcement support 117 should be made up of the same material as the seal flange 120 and the vacuum bag 2.
  • at least one valve sleeve 141 has been arranged between the first, inner seal 143, and the outer second seal 145, through the seal flange 120.
  • a hose 149 is connected to the valve sleeve 141, in order to pump vacuum between the inner seal 143 and the outer seal 145, so that the seal flange 120 is fastened tightly on to the flange surface 111.
  • Perforations 115 can be applied to the brace mould 114, designed to form bridges 115' through the stiffening profile 114 of the material 158 seal flange 120, designed to lock the stiffening profile 114 in the seal flange 114.
  • a vacuum bag 2,158 can, according to the invention, comprise carbon fibre which is added to the liquid seal/vacuum bag mass. Among other things, this will result in the vacuum bag becoming both electrically conducting and heat conductive.
  • the carbon fibre bearing vacuum bag 2,158 can in this way be grounded to the mould or a common electric earth conductor.
  • only one layer of the vacuum bag 2,158 contains carbon fibre, preferably m towards the mould and "lay-up".
  • integrated canals 172' have been arranged for circulating cooling or heating liquid 173' m the vacuum bag 2, designed for heating or cooling the moulding materials and possibly the mould 1, through the vacuum bag 2.
  • integrated electrical conductors 172" can be arranged m the vacuum bag 2, which are designed for heating the moulding materials m the mould 1 through the vacuum bag 2.
  • Profile moulding for casting the seal flange The invention also comprises, as illustrated m fig. 12, a profile moulding 150 for casting a profiled seal flange 120 for a vacuum bag 2.
  • the profile moulding 150 has been designed to bear against the flange's 110 flange surface 111 of a mould 1, and has an underside 111', designed to bear against the flange surface 111. It has a top surface 121', which forms a contact surface 121 m the seal flange 120.
  • a first, inner longitudinal groove 143' m the top surface 121' has been designed to form a first, inner seal 143, like an integrated elevation m the contact surface 121, and also to form a vacuum canal 155 within the first inner seal 143.
  • the first and the second longitudinal outer furrow 143' , 145' on the profile moulding causes the formation of a longitudinal ridge ____ 1__2_, illustrated m fig. 11, which will form the cavity 147' in the contact surface 121.
  • a recessed inner shoulder 154 which is designed to make the created vacuum canal 155 relatively shallow, has been arranged m the profile moulding' s 150 top surface.
  • the profile moulding can be formed by assembling stiffening profiles along the edge of the flange surface 111.
  • it could comprise an extruded or pultruded flexible moulding, designed to be placed on and along the flange surface 111, and also designed to join the two free ends.
  • it could comprise a stiff or flexible moulded unbroken frame or ring, arranged for being placed on the flange surface 111.
  • the profile moulding 150 could include longitudinal recesses at the ends, as illustrated m fig. 12b.
  • the recesses have been arranged to accommodate straight, or m the flange level cracked joints, designed to join the profile moulding m such a way that it adapts to the flange's 110 profile of the mould 1.
  • a vacuum bag 2 with a seal flange 120, with contact surface 121, designed to bear against a flange surface 121 on a flange 110 on a mould 1, arranged for moulding composite materials 9 by placing a profile moulding 150 on the mould's 1 flange surface 111, where the profile moulding 150 has been arranged to function as a local mould for moulding the contact surface 121 of the profiled seal flange, where the profile moulding has a top surface 121', a first inner longitudinal groove 143' in the top surface 121', designed to form a first, inner seal 143 as an elevation in the contact surface 121, and to form a vacuum canal 155 within the first inner seal 143.
  • the solidifying/ tempering of the integrated vacuum bag, including the seal/vacuum bag mass 158 will start, in an a per se well-known manner, until the vacuum bag 2 has achieved sufficient tensile strength and/or mechanical strength to be released from the mould 1.
  • a heat resistant and elastic material, which will regain its form after stretching, preferably silicon, will be applied for the integrated vacuum bag 2 and the seal flange 120.
  • a stiffening profile 114 for the seal flange 120 is placed at the desired distance over the profile moulding 150, as described above.
  • reinforcement supports 117 are placed on the profile moulding, in such a way that they support the stiffening profile 114 during the formation of the seal flange 120.
  • the reinforcement supports 117 consist preferably of the same type of material as the seal/vacuum bag mass 158 that will constitute the seal flange 120 and the vacuum bag 2.
  • the stiffening profile 114 could to advantage be moulded into the seal flange 120 in its entirety.
  • For vacuum pumping it is possible to pump vacuum through a hole in the flange 110 on the mould 1.
  • the invention suggests that the mould 1 and preferably a release layer 30 could be coated with a colour or structure layer 32. During the moulding process these will be included in the finished composite material 9.
  • the colour or structure layer 32 must be able to adhere to the fibre reinforcement 5 or the matrix material 8, and forms an integrated coloured and/or structured surface of the finished composite material 9.
  • Several advantages will be achieved in this way, among others the prevention of unwanted distribution of colour agent during the spraying, and that the colour agent is statically connected to the mould.
  • the layer of colour agent 32 may be immediately partially melted when it is being applied to the mould a, so that it becomes homogenous and is kept in place.
  • the colour agent layer 32 is cooled down before any of the other materials which are included in the composite material 9, like the matrix material and the fibre reinforcement 8,5,80, are applied.
  • the vacuum bag 2 is basically intended as a flexible and pliable device, but, as an extreme example, could constitute a more or less solid form, otherwise moulded as described above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de moulage sous vide pour matériaux composites, qui fait intervenir un mat de renforcement en thermoplastique/fibres. Le thermoplastique (8) peut être fait de fibres tissées (88) combinées à des fibres de renforcement, par exemple des fibres de verre (87). On évite ainsi l'injection du thermoplastique ou le trempage du plastique sous forme liquide après l'aspiration à vide du mat de renforcement, ce qui permet de réduire fortement les problèmes liés à la répartition inégale du thermoplastique (8). Le mat en thermoplastique/de renforcement (81) est placé dans un moule (1) recouvert d'un film de libération (3) et d'une poche à vide (2). On applique du vide au mat en thermoplastique/de renforcement (5, 8, 81) et également entre le film de libération (3) et la poche à vide (2). Le vide est ensuite consolidé avant que la température augmente, jusqu'à ce que les fibres thermoplastiques se liquéfient à une température de (Tp), enveloppent et courbent le mat à fibres intégrées (5).
PCT/NO2000/000166 1999-05-21 2000-05-19 Procede et dispositif pour le moulage de materiaux composites Ceased WO2000071329A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP00927986A EP1189743A1 (fr) 1999-05-21 2000-05-19 Procede et dispositif pour le moulage de materiaux composites
DE1189743T DE1189743T1 (de) 1999-05-21 2000-05-19 Verfahren und vorrichtung zum formen von verbundmaterial
AU46288/00A AU4628800A (en) 1999-05-21 2000-05-19 Procedure and device for the moulding of composite materials
NO20015456A NO318482B1 (no) 1999-05-21 2001-11-08 Vakuumduk, profillist og fremgangsmate for a danne slik vakuumduk
NO20024788A NO20024788D0 (no) 1999-05-21 2002-10-03 Fremgangsmåte for dannelse av et ytterskikt i et komposittmateriale
NO20024787A NO331216B1 (no) 1999-05-21 2002-10-03 Fremgangsmate for fremstilling av fiberarmerte komposittmaterialemner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO19992450 1999-05-21
NO19992450A NO317413B1 (no) 1999-05-21 1999-05-21 Fremgangsmate for fremstilling av fiberarmerte termoplastkomposittmaterialemner

Publications (1)

Publication Number Publication Date
WO2000071329A1 true WO2000071329A1 (fr) 2000-11-30

Family

ID=19903350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2000/000166 Ceased WO2000071329A1 (fr) 1999-05-21 2000-05-19 Procede et dispositif pour le moulage de materiaux composites

Country Status (5)

Country Link
EP (1) EP1189743A1 (fr)
AU (1) AU4628800A (fr)
DE (1) DE1189743T1 (fr)
NO (1) NO317413B1 (fr)
WO (1) WO2000071329A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005090057A1 (fr) * 2004-03-18 2005-09-29 Ge Bayer Silicones Gmbh & Co. Kg Procede de façonnage faisant appel a une composition de caoutchouc de silicone
WO2005092599A1 (fr) * 2004-03-08 2005-10-06 Tracker Marine Llc Outil de moulage ferme
GB2454881A (en) * 2007-11-20 2009-05-27 Gkn Aerospace Services Ltd Mould with suction holes for forming a diaphragm
WO2012107007A1 (fr) * 2011-02-11 2012-08-16 Waldemar Piekenbrink Gfk-Modell- Und Formenbau Produktions- Und Vertriebs Gmbh Dispositif de couvercle à vide
EP2529919A1 (fr) * 2011-05-28 2012-12-05 The Boeing Company Traitement de sacs sous vide au moyen de joints doubles
US8357325B2 (en) 2008-12-10 2013-01-22 General Electric Company Moulds with integrated heating and methods of making the same
US8580169B2 (en) 2009-07-17 2013-11-12 Carbon Fibre Preforms Ltd Fibre matrix and a method of making a fibre matrix
WO2014008244A1 (fr) * 2012-07-06 2014-01-09 Basf Se Sac chauffant d'infusion sous vide, transparent et réutilisable et son procédé d'utilisation
CN109367059A (zh) * 2018-12-07 2019-02-22 中南大学 一种复合材料用微波固化装置
IT201900001683A1 (it) * 2019-02-06 2020-08-06 Vincenzo Tagliaferri Nuove vasche realizzate con nuovi materiali compositi.
CN114179270A (zh) * 2021-11-30 2022-03-15 西安交通大学 环氧-无机填料复合材料制备用搅拌密封装置及操作方法
US20220379593A1 (en) * 2019-10-24 2022-12-01 Arrival Limited Composite panels and parts
CN115674720A (zh) * 2022-10-28 2023-02-03 吉林重通成飞新材料股份公司 热塑性风电叶片主梁成型方法
CN115782240A (zh) * 2022-11-29 2023-03-14 吉林重通成飞新材料股份公司 一种热塑性夹芯结构制品的制备方法
CN115847853A (zh) * 2022-10-28 2023-03-28 吉林重通成飞新材料股份公司 一种热塑性风电叶片主梁成型方法
CN116529059A (zh) * 2020-11-27 2023-08-01 丰田自动车株式会社 成形方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407685A (en) * 1979-07-23 1983-10-04 Ford Aerospace & Communication Corporation Metallized film transfer process
EP0175510A2 (fr) * 1984-09-18 1986-03-26 Aerovac Systems (keighley) Limited Moulage au sac à vide
WO1987005557A1 (fr) * 1986-03-13 1987-09-24 M & T Laminates Limited Laminage de materiaux en feuilles
JPS6398414A (ja) * 1986-10-15 1988-04-28 Kamakura Mold Seisakusho:Kk 多孔質樹脂真空成形型の作製方法
US4911811A (en) * 1988-07-14 1990-03-27 The Stanley Works Method of making coated articles with metallic appearance
GB2222980A (en) * 1988-09-09 1990-03-28 British Aerospace Moulding composite materials
US4923660A (en) * 1985-05-08 1990-05-08 Bernd Willenberg Process for the production of mouldings and films from thermotropic polymers
JPH05293439A (ja) * 1992-04-20 1993-11-09 Furukawa Electric Co Ltd:The フッ素樹脂を含有するポリフェニレンスルフィド樹脂系粉体塗料の塗装方法
US5665301A (en) * 1995-07-11 1997-09-09 Arctek Inc. Apparatus and method for forming fiber reinforced composite articles
GB2310822A (en) * 1996-03-07 1997-09-10 Euro Projects Ltd Moulding a structure from thermoplastics material
US5770243A (en) * 1992-05-15 1998-06-23 Launchfirm Ltd. Vacuum bagging apparatus
EP1008436A2 (fr) * 1998-11-27 2000-06-14 Ex-press Plastics Limited Procédé et dispositif pour la fabrication d'objets en matériau thermoplastique

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407685A (en) * 1979-07-23 1983-10-04 Ford Aerospace & Communication Corporation Metallized film transfer process
EP0175510A2 (fr) * 1984-09-18 1986-03-26 Aerovac Systems (keighley) Limited Moulage au sac à vide
US4923660A (en) * 1985-05-08 1990-05-08 Bernd Willenberg Process for the production of mouldings and films from thermotropic polymers
WO1987005557A1 (fr) * 1986-03-13 1987-09-24 M & T Laminates Limited Laminage de materiaux en feuilles
JPS6398414A (ja) * 1986-10-15 1988-04-28 Kamakura Mold Seisakusho:Kk 多孔質樹脂真空成形型の作製方法
US4911811A (en) * 1988-07-14 1990-03-27 The Stanley Works Method of making coated articles with metallic appearance
GB2222980A (en) * 1988-09-09 1990-03-28 British Aerospace Moulding composite materials
JPH05293439A (ja) * 1992-04-20 1993-11-09 Furukawa Electric Co Ltd:The フッ素樹脂を含有するポリフェニレンスルフィド樹脂系粉体塗料の塗装方法
US5770243A (en) * 1992-05-15 1998-06-23 Launchfirm Ltd. Vacuum bagging apparatus
US5665301A (en) * 1995-07-11 1997-09-09 Arctek Inc. Apparatus and method for forming fiber reinforced composite articles
GB2310822A (en) * 1996-03-07 1997-09-10 Euro Projects Ltd Moulding a structure from thermoplastics material
EP1008436A2 (fr) * 1998-11-27 2000-06-14 Ex-press Plastics Limited Procédé et dispositif pour la fabrication d'objets en matériau thermoplastique

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 198823, Derwent World Patents Index; AN 1988-158189, XP002965149 *
DATABASE WPI Week 199349, Derwent World Patents Index; AN 1993-391904, XP002965148 *
PATENT ABSTRACTS OF JAPAN *

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092599A1 (fr) * 2004-03-08 2005-10-06 Tracker Marine Llc Outil de moulage ferme
US7160498B2 (en) * 2004-03-08 2007-01-09 Tracker Marine, L.L.C. Closed molding tool
US7393494B2 (en) 2004-03-08 2008-07-01 Tracker Marine Lp Closed molding tool
WO2005090057A1 (fr) * 2004-03-18 2005-09-29 Ge Bayer Silicones Gmbh & Co. Kg Procede de façonnage faisant appel a une composition de caoutchouc de silicone
GB2454881A (en) * 2007-11-20 2009-05-27 Gkn Aerospace Services Ltd Mould with suction holes for forming a diaphragm
GB2454881B (en) * 2007-11-20 2010-03-17 Gkn Aerospace Services Ltd Diaphragm forming
US8162652B2 (en) 2007-11-20 2012-04-24 Gkn Aerospace Services Limited Diaphragm forming
US8357325B2 (en) 2008-12-10 2013-01-22 General Electric Company Moulds with integrated heating and methods of making the same
US10273610B2 (en) 2009-07-17 2019-04-30 Cfp Composites Limited Fibre matrix and a method of making a fibre matrix
US8580169B2 (en) 2009-07-17 2013-11-12 Carbon Fibre Preforms Ltd Fibre matrix and a method of making a fibre matrix
WO2012107007A1 (fr) * 2011-02-11 2012-08-16 Waldemar Piekenbrink Gfk-Modell- Und Formenbau Produktions- Und Vertriebs Gmbh Dispositif de couvercle à vide
US8628639B2 (en) 2011-05-28 2014-01-14 The Boeing Company Vacuum bag processing using dual seals
EP2529919A1 (fr) * 2011-05-28 2012-12-05 The Boeing Company Traitement de sacs sous vide au moyen de joints doubles
US9242415B2 (en) 2012-07-06 2016-01-26 Basf Corporation Transparent and reusable vacuum infusion heating bag and methods of making and using same
WO2014008244A1 (fr) * 2012-07-06 2014-01-09 Basf Se Sac chauffant d'infusion sous vide, transparent et réutilisable et son procédé d'utilisation
CN109367059A (zh) * 2018-12-07 2019-02-22 中南大学 一种复合材料用微波固化装置
CN109367059B (zh) * 2018-12-07 2024-01-26 中南大学 一种复合材料用微波固化装置
IT201900001683A1 (it) * 2019-02-06 2020-08-06 Vincenzo Tagliaferri Nuove vasche realizzate con nuovi materiali compositi.
WO2020161223A1 (fr) * 2019-02-06 2020-08-13 Frattelli Mazzocchia S.P.A. Réservoir en matériau composite
US20220379593A1 (en) * 2019-10-24 2022-12-01 Arrival Limited Composite panels and parts
CN116529059A (zh) * 2020-11-27 2023-08-01 丰田自动车株式会社 成形方法
US20230405945A1 (en) * 2020-11-27 2023-12-21 Toyota Jidosha Kabushiki Kaisha Molding method
CN114179270A (zh) * 2021-11-30 2022-03-15 西安交通大学 环氧-无机填料复合材料制备用搅拌密封装置及操作方法
CN115847853A (zh) * 2022-10-28 2023-03-28 吉林重通成飞新材料股份公司 一种热塑性风电叶片主梁成型方法
CN115674720A (zh) * 2022-10-28 2023-02-03 吉林重通成飞新材料股份公司 热塑性风电叶片主梁成型方法
CN115782240A (zh) * 2022-11-29 2023-03-14 吉林重通成飞新材料股份公司 一种热塑性夹芯结构制品的制备方法

Also Published As

Publication number Publication date
NO992450D0 (no) 1999-05-21
NO992450L (no) 2000-11-22
AU4628800A (en) 2000-12-12
NO317413B1 (no) 2004-10-25
EP1189743A1 (fr) 2002-03-27
DE1189743T1 (de) 2002-10-17

Similar Documents

Publication Publication Date Title
WO2000071329A1 (fr) Procede et dispositif pour le moulage de materiaux composites
RU2443555C2 (ru) Формовочно-литьевое устройство и способ производства преформ и армированных волокном пластмасс с помощью формовочно-литьевого устройства
RU2622306C2 (ru) Конструирование поверхности термопластических материалов и оборудования
RU2533132C2 (ru) Способ производства усовершенствованных композитных компонентов
EP1721719B1 (fr) Procédé et dispositif de moulage rtm
JP3653249B2 (ja) 射出成形法による繊維強化構造部品の製造方法および装置
US4942013A (en) Vacuum resin impregnation process
EP2599615B1 (fr) Réduire la porosité dans des structures composites
EP2490883B1 (fr) Procédé pour la production de matière composite
GB2310822A (en) Moulding a structure from thermoplastics material
EP1943085B1 (fr) Procédé de production d un produit renforcé par des fibres
CN105531307A (zh) 用于制造复合材料的预浸料坯
CN102510800A (zh) 制造复合材料的方法和装置
EP0661147A2 (fr) Procédé et appareil pour la fabrication d'un objet cylindrique en matériau composite fibreux
US5407631A (en) Casting process for making glass fiber preforms
CN115593024A (zh) 一种复合材料筒状制件及其成型方法
US5006373A (en) Method and apparatus for coating fibers with thermoplastics
JP2018034498A (ja) ドライプリフォームの樹脂浸透率に局所的に影響を及ぼす方法
CN111421858A (zh) 一种复合材料发射箱及其制备方法
US11685080B2 (en) Mold with thermally conductive flanges
EP1378338A1 (fr) Méthode et dispositif pour la production de produits composites utilisant un moule fermé comprenant un revêtement interieur et revêtement interieur de moule pour leur mise en oeuvre
NO318482B1 (no) Vakuumduk, profillist og fremgangsmate for a danne slik vakuumduk
CN115583052A (zh) 一种复合材料筒状制件的成型方法
Bader Composites fabrication processes
MX2008004426A (en) A method for producing a fibre-reinforced product

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2000927986

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 2000927986

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Ref document number: 2000927986

Country of ref document: EP