SE460271B - PROCEDURE AND FORMING TOOL FOR PREPARATION OF COMPOSITION PARTS - Google Patents

PROCEDURE AND FORMING TOOL FOR PREPARATION OF COMPOSITION PARTS

Info

Publication number
SE460271B
SE460271B SE8705017A SE8705017A SE460271B SE 460271 B SE460271 B SE 460271B SE 8705017 A SE8705017 A SE 8705017A SE 8705017 A SE8705017 A SE 8705017A SE 460271 B SE460271 B SE 460271B
Authority
SE
Sweden
Prior art keywords
mold
mold half
tool
procedure
preparation
Prior art date
Application number
SE8705017A
Other languages
Swedish (sv)
Other versions
SE8705017D0 (en
SE8705017L (en
Inventor
G Westerlund
Original Assignee
Volvo Ab
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 Volvo Ab filed Critical Volvo Ab
Priority to SE8705017A priority Critical patent/SE460271B/en
Publication of SE8705017D0 publication Critical patent/SE8705017D0/en
Priority to PCT/SE1988/000682 priority patent/WO1989005718A1/en
Publication of SE8705017L publication Critical patent/SE8705017L/en
Publication of SE460271B publication Critical patent/SE460271B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C43/06—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts
    • B29C43/08—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts with circular movement, e.g. mounted on rolls, turntables
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • 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
    • B29C70/461—Rigid movable compressing mould parts acting independently from opening or closing action of the main mould
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • B29C2043/141—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making single layer articles
    • B29C2043/144—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making single layer articles using different moulds, i.e. the layer is compressed in consecutive steps by using different moulds for each portion of the article
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3621—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices a plurality of individual elements acting on the material in the same or diferent directions, e.g. making tubular T-joints, profiles
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/08—Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3017—Floor coverings

Landscapes

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

Description

460 271 01 10 15 20 30 detaljer medför risk för att det först pâförda plastmaterialet börjar hårda innan formen sluts, om inte lângsamhärdande plastblandning används. Därigenom blir processen för långsam för rationell serieproduktion. Aven injiceringsmetoden är för ângsamt för att uppfylla dagens krav på rationell produktion. 460 271 01 10 15 20 30 details entails the risk that the first applied plastic material will start to harden before the mold is closed, unless long-lasting plastic mixture is used. As a result, the process becomes too slow for rational series production. The injection method is also too cumbersome to meet today's requirements for rational production.

SMC-metoden är behäftad med flera nackdelar, bl.a. stor sprid- ning av hâllfasthetsvärdena hos den slutliga produkten p.g.a. ogynnsamt flytförlopp.The SMC method has several disadvantages, e.g. large spread of the strength values of the final product due to unfavorable flow process.

Syftet med föreliggande uppfinning är att åstadkomma ett sär- skilt för framställning av kompositdetaljer med ytor i stor- leksordningen flera kvadratmeter. t.ex. hela golv för bilar, avsett förfarande. vilket eliminerar nackdelarna hos de ovan angivna metoderna och möjliggör rationell serieproduktíon.The object of the present invention is to provide a special for the production of composite details with surfaces in the order of several square meters. for example entire floor for cars, intended procedure. which eliminates the disadvantages of the above methods and enables rational series production.

Detta uppnås enligt uppfinningen genom att en materialsats bestående av en flytande plastblandning med inblandad arme- ringsfiber sprutas mot en formyta på den ena formhalvan och att satsat material etappvis pressas mellan nämnda formyta och en andra flerdelad formhalva.This is achieved according to the invention in that a batch of material consisting of a liquid plastic mixture with mixed reinforcement fiber is sprayed against a mold surface on one mold half and that batched material is pressed in stages between said mold surface and a second multi-part mold half.

Ett formverktyg för genomförande av förfarandet har åtminstone ena formhalvan uppdelad i flera separata delar, som är indi- viduellt rörliga relativt den andra formhalvan, så att verk- tyget kan slutas etappvis allteftersom material sprutas på den andra formhalvans formyta.A mold tool for carrying out the method has at least one mold half divided into several separate parts, which are individually movable relative to the other mold half, so that the tool can be closed in stages as material is sprayed on the mold surface of the other mold half.

Genom denna kombination av känd 'spray-up' teknik och press- ning i etapper uppnås flera fördelar. Satsningen av såväl fibrer som matrismaterial i vätskeform (plast) direkt i verk- tyget eliminerar benovet av nellanlager för halvfabrikat och ger således kortast möjliga väg från råvara till färdig pro- dukt. Den etappvisa pressningen gör att materialet endast be- höver ligga mycket kort tid mot verktygsytorna innan det blir hoppressat. Detta medför att reaktiva snabba härdplastsystem kan användas för detaljer med stor yta, vilket i sin tur ger korta pracesstider. Avgângen av gaser som styren och lösnings- medel från materialsatsen begränsas, eftersom satsen aldrig »eQ ih, 10 20 25 460 271 ligger exponerade i sin helhet. vilket resulterar i ett miljö- vänligt förfarande.Through this combination of known 'spray-up' technology and pressing in stages, several advantages are achieved. The investment of both fibers and matrix material in liquid form (plastic) directly in the tool eliminates the need for nellan bearings for semi-finished products and thus provides the shortest possible path from raw material to finished product. The step-by-step pressing means that the material only needs to lie against the tool surfaces for a very short time before it is compressed. This means that reactive fast thermosetting plastic systems can be used for details with a large surface area, which in turn gives short processing times. The emission of gases such as styrene and solvents from the batch of materials is limited, as the batch is never exposed in its entirety. which results in an environmentally friendly procedure.

Förfarandet enligt uppfinningen beskrives nedan under hänvis- ning till bifogade ritning, där fig. l visar en perspektivvy av en undre formhalva och en sprutrobot, fig- 2 en schematisk perspektivvy illustrerande de olika förfaringsstegen och fig. 3 en princípskiss av ett verktyg. l fig. l och 2 betecknar l en undre formhalva eller formdel till ett generellt med 2 betecknat formverktyg, som har en övre formhalva 3, vilken är uppdelad i fyra sinsemellan obe- roende formdelar 4, 5, 6 och 7. Formdelarna l, 3 avgränsat mellan sig ett formutrymme för ett golvlaminat, exempelvis bestående av en glasfiberarmerad polyesterplast.The method according to the invention is described below with reference to the accompanying drawing, where Fig. 1 shows a perspective view of a lower mold half and a spraying robot, Fig. 2 a schematic perspective view illustrating the various method steps and Fig. 3 a principle sketch of a tool. In Figs. 1 and 2, 1 denotes a lower mold half or mold part of a mold tool generally designated 2, which has an upper mold half 3, which is divided into four mutually independent mold parts 4, 5, 6 and 7. The mold parts 1, 3 delimited between them a mold space for a floor laminate, for example consisting of a fiberglass-reinforced polyester plastic.

I fig. l och 2 illustreras hur en robot 8 med en sprutalfiber- cutter 9 sprutar en plastblandning med inblandning av glas- fibrer direkt på den undre formhalvans fornyta 10. I takt med ett materialsatsen påföres resp. fjärdedel av formytan lO an- bringas och pressas resp. motstäende formdel 4-7 på den övre formhalvan mot satsat material. Erforderligt 'presstryck' i storleksordningen 0,1 bar kan åstadkommas genom att formdelar- na 4-7 belastas individuellt med hjälp av icke närmare visade anordningar. t.ex. av tryckluftcylindrar pâ i princip samma sätt som vid konventionella pressbord. Lägre presstryck kan erhållas helt enkelt genom lämplig anpassning av formdelarnas 4-7 vikt, varvid det räcker att lägga på dessa pâ plats på den undre formhalvan.Figures 1 and 2 illustrate how a robot 8 with a syringe fiber cutter 9 sprays a plastic mixture with admixture of glass fibers directly on the front surface 10 of the lower mold half. a quarter of the mold surface 10 is applied and pressed resp. opposite mold part 4-7 on the upper mold half against charged material. The required 'press pressure' of the order of 0.1 bar can be achieved by loading the mold parts 4-7 individually by means of devices not shown in more detail. for example of compressed air cylinders in basically the same way as with conventional press tables. Lower pressing pressures can be obtained simply by suitable adjustment of the weight of the mold parts 4-7, it being sufficient to apply these in place on the lower mold half.

I fig. 2 illustrerar pos. l satsning av material, pos- 2 kom- paktering efter att alla fyra formdelarna en och en bringats på plats med hjälp av en kran ll, pos. 3 härdning av materia- let och pos. 4 lossning av det färdiga golvlaminatet 12 efter att den övre formhalvan lyfts av.In Fig. 2, pos. in loading of material, pos- 2 compaction after all four mold parts one by one have been brought into place by means of a crane ll, pos. 3 hardening of the material and pos. 4 loosening of the finished floor laminate 12 after the upper mold half has been lifted off.

I fiq. 3 visas schematiskt ett formverhtyg, vars övre formhal- J va 13 är uppdelad i fem efter varandra 1 verktygets längdriht- '469 271 10 ning följande delar 14, 15. 16. l7, 18 _ Delarna har icke när- mare vísade styrningar och kraftpâverkade organ som t.ex. nydraul- eller tryckluftcylindrar för att kunna förskjutas i de i figuren visade pílarnas riktning och i motsatt riktning.I fiq. 3 schematically shows a molding tool, the upper mold half of which is divided into five successive parts 14, 15, 16, 16, 17, 18, 18 in the longitudinal direction of the tool. The parts have no more detailed guides and force-actuated parts. bodies such as new hydraulic or compressed air cylinders in order to be able to move in the direction of the arrows shown in the figure and in the opposite direction.

Vid satsning av material på den undre formhalvans l formyta 10 börjar roboten 8 spruta ytan mitt för formdelen 14. Så snart denna yta är belagd pressas formdelen 14 mot materialet på det motstâende ytpartíet av formytan 10. Pâ motsvarande sätt sker materialsatsningen etappvis (frân vänster till höger, sett i fig. 3), så att slutligen formdelen 18 pressas mot den undre formytan.When placing material on the mold surface 10 of the lower mold half 1, the robot 8 begins to spray the surface in the middle of the mold part 14. As soon as this surface is coated, the mold part 14 is pressed against the material on the opposite surface portion of the mold surface 10. Correspondingly, the material is applied in stages. right, seen in Fig. 3), so that finally the mold part 18 is pressed against the lower mold surface.

Formdelarna 4-7 resp. l4-18 kan vara kalla eller tempererade beroende av typen av plastmaterial och val av härdningstid.The mold parts 4-7 resp. l4-18 may be cold or temperate depending on the type of plastic material and the choice of curing time.

För att få så liten värmeöverföring som möjligt mellan form- delarna kan dessa ha urtag 20 i sina sidor, vilket ger liten kontaktyta mellan dem, såsom visas i fig. 3.In order to obtain as little heat transfer as possible between the mold parts, these can have recesses 20 in their sides, which gives a small contact area between them, as shown in Fig. 3.

En uppdelning av en formhalva på ovan beskrivet sätt medför förutom de 1 inledningen angivna fördelarna att detaljen, som skall framställas i formverktyget, kan ha ett kraftigt mot- släpp, såsom framgår av partiet 21 framför formdelen 14. arA division of a mold half in the manner described above entails, in addition to the advantages stated in the introduction, that the part to be produced in the mold tool can have a strong backlash, as can be seen from the portion 21 in front of the mold part 14. ar

Claims (2)

1. 5 460 271 Patentkrav l. Förfarande för framställning av komponenter av komposit- material, vid vilket en plastblandning med inblandat arme- ringsmateríal pressas mellan formnalvor, k ä n n e t e c k - n a t av att en materíalsats bestående av flytande plast med inblandade armeringsfibrer sprutas mot en formyta på den ena formhalvan och att satsat material etappvis pressas mellan nämnda formyta och en formyta på en andra flerdelad formhalva.A process for producing components of composite material, in which a plastic mixture with mixed reinforcement material is pressed between mold nipples, characterized in that a batch of material consisting of liquid plastic with mixed reinforcement fibers is sprayed against a mold surface on one mold half and that charged material is pressed in stages between said mold surface and a mold surface on a second multi-part mold half. 2. Formverktyg för framställning av komponenter av komposit- material, innefattande en första och en andra formhalva som är sammanförbara för att mellan sig avgränsa ett formutrymme, k ä n n e t e c k n a t av att åtminstone den ena formhalvan (3; 13) är uppdelad i flera separata delar (4-7; 14-18), som är individuellt rörliga relativt den andra formhalvan (l) för att medge att formverktyget sluts etappvis allteftersom mate- rial pâföres den andra formhalvans formyta (10:Molding tool for producing components of composite material, comprising a first and a second mold half which are collapsible to define a mold space between them, characterized in that at least one mold half (3; 13) is divided into several separate parts (4-7; 14-18), which are individually movable relative to the second mold half (1) to allow the mold tool to close in stages as material is applied to the mold surface of the second mold half (10:
SE8705017A 1987-12-16 1987-12-16 PROCEDURE AND FORMING TOOL FOR PREPARATION OF COMPOSITION PARTS SE460271B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8705017A SE460271B (en) 1987-12-16 1987-12-16 PROCEDURE AND FORMING TOOL FOR PREPARATION OF COMPOSITION PARTS
PCT/SE1988/000682 WO1989005718A1 (en) 1987-12-16 1988-12-14 Process and compression mould for manufacture of composite parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8705017A SE460271B (en) 1987-12-16 1987-12-16 PROCEDURE AND FORMING TOOL FOR PREPARATION OF COMPOSITION PARTS

Publications (3)

Publication Number Publication Date
SE8705017D0 SE8705017D0 (en) 1987-12-16
SE8705017L SE8705017L (en) 1989-06-17
SE460271B true SE460271B (en) 1989-09-25

Family

ID=20370612

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8705017A SE460271B (en) 1987-12-16 1987-12-16 PROCEDURE AND FORMING TOOL FOR PREPARATION OF COMPOSITION PARTS

Country Status (2)

Country Link
SE (1) SE460271B (en)
WO (1) WO1989005718A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1019232B1 (en) * 1997-10-02 2003-01-15 Borealis GmbH Differentiated pressing process
US9890764B2 (en) * 2014-03-26 2018-02-13 General Electric Company Trailing edge cap for a rotor blade and method of manufacturing same
WO2017051383A1 (en) * 2015-09-25 2017-03-30 Sabic Global Technologies B.V. Method of molding using mold inserts and apparatus therefor
GB2567699B (en) * 2017-10-23 2022-02-09 Mclaren Automotive Ltd Moulding arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1175022A (en) * 1957-05-13 1959-03-19 Renault Improvements in the manufacture of fiber preforms
US3901641A (en) * 1971-06-24 1975-08-26 Alusuisse Compacting step by step
US4514353A (en) * 1983-06-29 1985-04-30 International Paper Company Apparatus and method for forming a multi-compartmented tray from a sheet material

Also Published As

Publication number Publication date
SE8705017D0 (en) 1987-12-16
SE8705017L (en) 1989-06-17
WO1989005718A1 (en) 1989-06-29

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