FR2574343B1 - Fabrication de materiau composite - Google Patents

Fabrication de materiau composite

Info

Publication number
FR2574343B1
FR2574343B1 FR858517973A FR8517973A FR2574343B1 FR 2574343 B1 FR2574343 B1 FR 2574343B1 FR 858517973 A FR858517973 A FR 858517973A FR 8517973 A FR8517973 A FR 8517973A FR 2574343 B1 FR2574343 B1 FR 2574343B1
Authority
FR
France
Prior art keywords
manufacture
composite material
composite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR858517973A
Other languages
English (en)
Other versions
FR2574343A1 (fr
Inventor
David Trevor Sutcliffe
David John Barraclough
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Publication of FR2574343A1 publication Critical patent/FR2574343A1/fr
Application granted granted Critical
Publication of FR2574343B1 publication Critical patent/FR2574343B1/fr
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/56Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/68Release sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0067Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other
    • B29C37/0075Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other using release sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/30Shaping 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
    • B29C70/34Shaping 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/42Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44Shaping 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00Shaping characteristics in general
    • B29C2791/001Shaping in several steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2063/00Use of EP, i.e. epoxy resins or derivatives thereof, as moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • B29K2105/243Partially cured
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2707/00Use of elements other than metals for preformed parts, e.g. for inserts
    • B29K2707/04Carbon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00Condition, form or state of the layers or laminate
    • B32B2305/08Reinforcements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00Condition, form or state of the layers or laminate
    • B32B2305/74Partially cured
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Quality & Reliability (AREA)
  • Moulding By Coating Moulds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Reinforced Plastic Materials (AREA)
FR858517973A 1984-12-06 1985-12-04 Fabrication de materiau composite Expired FR2574343B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08430891A GB2168002B (en) 1984-12-06 1984-12-06 Composite material manufacture

Publications (2)

Publication Number Publication Date
FR2574343A1 FR2574343A1 (fr) 1986-06-13
FR2574343B1 true FR2574343B1 (fr) 1989-10-20

Family

ID=10570819

Family Applications (1)

Application Number Title Priority Date Filing Date
FR858517973A Expired FR2574343B1 (fr) 1984-12-06 1985-12-04 Fabrication de materiau composite

Country Status (6)

Country Link
US (1) US4683018A (fr)
JP (1) JPS61139426A (fr)
DE (1) DE3541954C2 (fr)
FR (1) FR2574343B1 (fr)
GB (1) GB2168002B (fr)
IT (1) IT1200846B (fr)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192330A (en) * 1987-01-20 1993-03-09 Smith & Nephew Richards, Inc. Orthopedic device of biocompatible polymer with oriented fiber reinforcement
US5064439A (en) * 1987-01-20 1991-11-12 Richards Medical Company Orthopedic device of biocompatible polymer with oriented fiber reinforcement
US5145621A (en) * 1990-04-20 1992-09-08 General Electric Company Crossover mold tool for consolidating composite material
FR2685249B1 (fr) * 1991-12-24 1994-02-11 Snecma Procede de fabrication d'une pale de soufflante en materiau composite et outillage de moulage.
US5785202A (en) * 1992-02-20 1998-07-28 Fischer Advanced Composite Components Gmbh Stowage container for the use in aircraft
US5785788A (en) * 1992-02-20 1998-07-28 Fischer Advanced Composite Components Gmbh Process for manufacturing a stowage container for use in an aircraft
US5993713A (en) * 1992-12-01 1999-11-30 De La Puerta; Enrique Reinforced composite shapes and method and apparatus for their manufacture
US5322583A (en) * 1993-01-19 1994-06-21 Elliott Wharton Method of heat embossing materials subject to adhesion
US5954898A (en) * 1994-05-13 1999-09-21 Lockheed Fort Worth Company Method and system for fabricating parts from composite materials
JP4246276B2 (ja) * 1996-05-02 2009-04-02 モーメンティブ・パフォーマンス・マテリアルズ・インク 熱成形可能な積層品の製造方法
US6174483B1 (en) 1997-05-07 2001-01-16 Hexcel Cs Corporation Laminate configuration for reinforcing glulam beams
US6007894A (en) * 1997-07-10 1999-12-28 Mcdonnell Dougal Corporation Quasi-isotropic composite isogrid structure and method of making same
DE19803062C1 (de) * 1998-01-28 1999-10-28 Rainer Lebmeier Verfahren zur Herstellung von Faserverbund-Formteilen, insbesondere Hohlprofilteilen
US6228123B1 (en) 1998-08-19 2001-05-08 Depuy Orthopaedics, Inc. Variable modulus prosthetic hip stem
EP1029771B1 (fr) * 1999-02-19 2003-04-16 Breed Automotive Technology, Inc. Procédé de fabrication d'un volant de direction pour véhicules automobiles avec une enveloppe extérieure en fibres de carbone et obtenant ainsi le volant de direction
DE69906924T2 (de) 1999-02-19 2004-01-29 Breed Automotive Tech Herstellungsverfahren für ein Kraftfahrzeuglenkrad mit einer äusseren Hülle aus Verbundmaterial
US7118370B2 (en) * 2002-08-30 2006-10-10 The Boeing Company Composite spar drape forming machine
US6814916B2 (en) * 2002-08-30 2004-11-09 The Boeing Company Forming method for composites
US20050238892A1 (en) * 2004-04-22 2005-10-27 The Boeing Company Backing film and method for ply materials
GB0613872D0 (en) * 2006-07-12 2006-08-23 Airbus Uk Ltd Method of manufacturing composite part
GB0614087D0 (en) 2006-07-14 2006-08-23 Airbus Uk Ltd Composite manufacturing method
US8375758B1 (en) 2007-09-13 2013-02-19 The Boeing Company Induction forming of metal components with slotted susceptors
US8865050B2 (en) 2010-03-16 2014-10-21 The Boeing Company Method for curing a composite part layup
US8372327B2 (en) 2007-09-13 2013-02-12 The Boeing Company Method for resin transfer molding composite parts
US8017059B2 (en) 2007-09-13 2011-09-13 The Boeing Company Composite fabrication apparatus and method
GB0813785D0 (en) 2008-07-29 2008-09-03 Airbus Uk Ltd Method of manufacturing a composite element
US8834668B2 (en) * 2008-11-19 2014-09-16 The Boeing Company Staged cocuring of composite structures
DE102009021591B4 (de) * 2009-05-15 2012-12-20 Eads Deutschland Gmbh Verfahren zum Preformen eines Textilienhalbzeugs und Preform-Vorrichtung
DE102009044834B4 (de) * 2009-12-09 2015-08-20 Saertex Gmbh & Co. Kg Verfahren zur Herstellung eines Vorformlings für ein Faserverbundbauteil, Verfahren zur Herstellung eines textilen Halbzeugs für einen Vorformling und Textiles Halbzeug
DE102010004530A1 (de) * 2010-01-14 2011-07-21 Bayerische Motoren Werke Aktiengesellschaft, 80809 Verfahren zum Herstellen einer Versteifungsmatrix für ein Kunststoffteil
DE102010009528B4 (de) 2010-02-26 2015-04-30 Ifc Composite Gmbh Blattfeder aus einem Faserverbundwerkstoff mit integrierten Lageraugen und Verfahren zur Herstellung derselben
US9061090B2 (en) * 2010-03-17 2015-06-23 Kabushiki Kaisha B.I. Tec Stem structure for composite prosthetic hip and method for manufacturing the same
US9126374B2 (en) 2010-09-28 2015-09-08 Russell B. Hanson Iso-grid composite component
FR2965497B1 (fr) * 2010-10-05 2013-07-12 Snecma Procede de realisation d'une piece metallique
FR2965498B1 (fr) * 2010-10-05 2012-09-28 Snecma Procede de realisation d?un renfort metallique d?aube de turbomachine.
FR2991228B1 (fr) 2012-05-29 2015-03-06 Airbus Operations Sas Procede et dispositif de realisation d'un panneau composite auto-raidi
WO2014031047A1 (fr) * 2012-08-24 2014-02-27 Saab Ab Structure stratifiée de matériau composite
DE102012016934B4 (de) * 2012-08-27 2015-12-03 Ifc Composite Gmbh Verfahren zur gleichzeitigen Herstellung von mehreren Blattfedern aus einem Faserverbundwerkstoff
KR20150054873A (ko) * 2012-09-07 2015-05-20 제네럴 일렉트릭 컴퍼니 이온 교환막 제조 방법
US9162396B2 (en) * 2012-10-12 2015-10-20 The Boeing Company Method for forming fuselage stringers
FR2999970B1 (fr) * 2012-12-20 2015-06-19 Airbus Operations Sas Procede de realisation d'une preforme textile a fibres continues par circulation d'un flux de gaz chaud a travers un ensemble fibreux
FR3006937B1 (fr) * 2013-06-14 2016-01-22 Yann Maurice Gastel Procede d'obtention d'une cale pelable non plane et cale pelable non plane ainsi obtenue
DE102013212763A1 (de) * 2013-06-28 2014-12-31 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zum stoffschlüssigen Verbinden von faserverstärkten Bauteilen
KR20170047374A (ko) * 2014-09-01 2017-05-04 헥셀 컴포지츠 에스.아.에스. 몰딩 재료 및 이를 형성하기 위한 방법
GB2554476A (en) * 2016-09-21 2018-04-04 Suzlon Energy Ltd A method of forming a component
US10710327B2 (en) * 2017-12-01 2020-07-14 The Boeing Company Methods for making composite parts from stacked partially cured sublaminate units
US11707896B2 (en) * 2020-02-26 2023-07-25 The Boeing Company Methods and devices for supporting of variety of different pre-cured composite stringers

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068361A (en) * 1933-06-09 1937-01-19 Western Electric Co Method of working moldable material
US2187294A (en) * 1938-01-31 1940-01-16 Clare G Young Process for stiffening paper
US2310619A (en) * 1939-12-15 1943-02-09 Richardson Co Manufacture of hard rubber panels
US2721356A (en) * 1952-05-27 1955-10-25 Bertram H Macleod Method for shaping rubber soles
FR1215435A (fr) * 1957-12-06 1960-04-19 Union Carbide Corp Articles composites en matière plastique et fibres métalliques
US3334001A (en) * 1963-06-03 1967-08-01 Certain Teed Prod Corp Process for forming a laminated plastic structure
GB1047020A (en) * 1963-06-28 1966-11-02 Formica Int Separation of laminated products
US3674589A (en) * 1969-02-28 1972-07-04 Ncr Co Method of fabrication and reinforcing high solids-containing materials
US3632730A (en) * 1969-04-07 1972-01-04 James E Cotton Method of making a flume
US3969177A (en) * 1974-06-24 1976-07-13 International Business Machines Corporation Laminating method
US4086378A (en) * 1975-02-20 1978-04-25 Mcdonnell Douglas Corporation Stiffened composite structural member and method of fabrication
US4065340A (en) * 1977-04-28 1977-12-27 The United States Of America As Represented By The National Aeronautics And Space Administration Composite lamination method
US4199388A (en) * 1978-05-15 1980-04-22 Geonautics, Inc. Method for making a multi-ply continuous filament ballistic helmet
GB1587314A (en) * 1978-05-22 1981-04-01 Rolls Royce Method of forming an article from composite material
US4263243A (en) * 1979-05-07 1981-04-21 Thiokol Corporation Method for making a flexible bearing
US4461666A (en) * 1980-05-12 1984-07-24 Baltek Corporation Contoured balsa-core laminate
IT1132360B (it) * 1980-08-08 1986-07-02 Salvarani Spa Procedimento di fabbricazione di un laminato plastico sagomato,a forte spessore,macchina per la sua realizzazione e prodotto con esso ottenuto
DE3201266A1 (de) * 1982-01-16 1983-07-28 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von formkoerpern aus faserverstaerkten schichtstoffen
DE3317138C2 (de) * 1983-05-11 1985-02-28 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Verfahren zum Verbinden von Preßteilen mit großporigen Körpern
GB2156262B (en) * 1984-03-27 1987-07-08 Rolls Royce Trimming fibre-reinforced plastics material

Also Published As

Publication number Publication date
DE3541954A1 (de) 1986-06-12
DE3541954C2 (de) 1995-07-20
IT8522986A0 (it) 1985-11-26
JPS61139426A (ja) 1986-06-26
US4683018A (en) 1987-07-28
GB8430891D0 (en) 1985-01-16
GB2168002B (en) 1988-06-08
FR2574343A1 (fr) 1986-06-13
GB2168002A (en) 1986-06-11
IT1200846B (it) 1989-01-27
JPH0533656B2 (fr) 1993-05-20

Similar Documents

Publication Publication Date Title
FR2574343B1 (fr) Fabrication de materiau composite
MX163336A (es) Articulo de manufactura
JPS56130352A (en) Manufacture of polyfluovinylidene composite material
NO851017L (no) Fremgangsmaate for fremstilling av formede gjenstander av plastkompositt materiale
GB2160467B (en) Moulding of composite materials
JPS5780046A (en) Manufacture of composite material
BR8406962A (pt) Material composito cimenticeo
AT381903B (de) Matrizenform
DK566485D0 (da) Overtraeksmateriale
DK446085A (da) Triazol- eller imidazolfungicidholdige materialer
GB8521505D0 (en) Manufacture of sheetlike material
JPS56150185A (en) Manufacture of composite material
DE3572228D1 (de) Tannable multicolored materials
GB2177062B (en) Manufacture of composite material components
JPS57145063A (en) Manufacture of inorganic lightweight material
ATA123885A (de) Mehrschichtmaterial
DK459882A (da) Sammensat stenuldsmateriale
JPS57193362A (en) Manufacture of laminating material
IT1178784B (it) Materiale composito
JPS57170883A (en) Manufacture of composite material
JPS56120563A (en) Manufacture of lightweight material
NO851109L (no) Fremstilling av harpiksholdige materialer
RO90111A (fr) Composition de materiel thermo-isolant
JPS5722185A (en) Manufacture of composite material
ES538533A0 (es) Perfeccionamientos en la fabricacion de hornos

Legal Events

Date Code Title Description
ST Notification of lapse