ES8403366A1 - Un metodo para la fabricacion de articulos con refuerzo de fibra. - Google Patents

Un metodo para la fabricacion de articulos con refuerzo de fibra.

Info

Publication number
ES8403366A1
ES8403366A1 ES521916A ES521916A ES8403366A1 ES 8403366 A1 ES8403366 A1 ES 8403366A1 ES 521916 A ES521916 A ES 521916A ES 521916 A ES521916 A ES 521916A ES 8403366 A1 ES8403366 A1 ES 8403366A1
Authority
ES
Spain
Prior art keywords
fiber reinforced
manufacture
adhesive
reinforced articles
sheets
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
ES521916A
Other languages
English (en)
Other versions
ES521916A0 (es
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.)
Raytheon Technologies Corp
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of ES521916A0 publication Critical patent/ES521916A0/es
Publication of ES8403366A1 publication Critical patent/ES8403366A1/es
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
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/28Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
    • 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
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C11/00Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16Blades
    • B64C11/20Constructional features
    • B64C11/26Fabricated blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/08Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/087Propellers
    • 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
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02Composition of the impregnated, bonded or embedded layer
    • B32B2260/021Fibrous or filamentary layer
    • 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
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04Impregnation, embedding, or binder material
    • B32B2260/046Synthetic resin
    • 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
    • B32B2315/00Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08Glass
    • B32B2315/085Glass fiber cloth or fabric
    • 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
    • Y10T156/1036Bending of one piece blank and joining edges to form article
    • 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
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49316Impeller making
    • Y10T29/49332Propeller making
    • 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
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49316Impeller making
    • Y10T29/49336Blade making
    • Y10T29/49337Composite blade

Abstract

METODO PARA LA FABRICACION DE ARTICULOS CON REFUERZO DE FIBRA.COMPRENDE LAS SIGUIENTES ETAPAS: PRIMERA, SE PROPORCIONA UNA HORMA DE SUBCONJUNTO DE LA FORMA DESEADA DEL ARTICULO CON REFUERZO DE FIBRA; SEGUNDA, SE ENVUELVE DICHA HORMA DE SUBCONJUNTO CON UNA PLURALIDAD DE LAMINAS (38, 40) DE MATERIAL FIBROSO, CADA UNA DE LAS CUALES CONTIENE UNA PEQUEÑA CANTIDAD DE ADHESIVO TERMOPLASTICO (50) DEPOSITADO SOBRE UNA SOLA DE SUS SUPERFICIES; TERCERA, SE DEPOSITAN DICHAS LAMINAS DE MATERIAL FIBROSO, UNA SOBRE OTRA, SOBRE DICHO SUBCONJUNTO MIENTRAS SE UNE LA PRIMERADE DICHAS LAMINAS A LA HORMA DE SUBCONJUNTO Y CADA LAMINA SUBSIGUIENTE (40) A UNA LAMINA ADYACENTE PRECEDENTE (38) MEDIANTE CALOR Y PRESION; Y POR ULTIMO, SE MOLDEA DICHO MATERIAL FIBROSO IMPREGNADO.
ES521916A 1982-05-27 1983-04-28 Un metodo para la fabricacion de articulos con refuerzo de fibra. Expired ES8403366A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/382,828 US4470862A (en) 1982-05-27 1982-05-27 Manufacture of fiber reinforced articles

Publications (2)

Publication Number Publication Date
ES521916A0 ES521916A0 (es) 1984-04-01
ES8403366A1 true ES8403366A1 (es) 1984-04-01

Family

ID=23510564

Family Applications (1)

Application Number Title Priority Date Filing Date
ES521916A Expired ES8403366A1 (es) 1982-05-27 1983-04-28 Un metodo para la fabricacion de articulos con refuerzo de fibra.

Country Status (11)

Country Link
US (1) US4470862A (es)
JP (1) JPS58211418A (es)
BR (1) BR8302056A (es)
CA (1) CA1195223A (es)
DE (1) DE3314185C2 (es)
ES (1) ES8403366A1 (es)
FR (1) FR2527515B1 (es)
GB (1) GB2120599B (es)
IT (1) IT1163260B (es)
NL (1) NL8301516A (es)
SE (1) SE455176B (es)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1161534B (it) * 1983-10-26 1987-03-18 Agusta Aeronaut Costr Longherone per pala di elicottero e metodo per la sua realizzazione
FR2616409B1 (fr) * 1987-06-09 1989-09-15 Aerospatiale Pale en materiaux composites et son procede de fabrication
US5022824A (en) * 1988-10-07 1991-06-11 United Technologies Corporation Pinned airfoil propeller blade
US4988469A (en) * 1988-11-21 1991-01-29 United Technologies Corporation Method of fabricating fiber reinforced composite articles by resin transfer molding
US5042968A (en) * 1989-11-02 1991-08-27 United Technologies Corporation Propeller blade subassembly and method for making a propeller blade subassembly
US5118257A (en) * 1990-05-25 1992-06-02 Sundstrand Corporation Boot attachment for composite turbine blade, turbine blade and method of making turbine blade
US5314309A (en) * 1990-05-25 1994-05-24 Anthony Blakeley Turbine blade with metallic attachment and method of making the same
US5080851A (en) * 1990-09-06 1992-01-14 United Technologies Corporation Method for stabilizing complex composite preforms
US5252165A (en) * 1990-09-20 1993-10-12 United Technologies Corporation Method of making contoured fiber reinforced body
US5127802A (en) * 1990-12-24 1992-07-07 United Technologies Corporation Reinforced full-spar composite rotor blade
US5222297A (en) * 1991-10-18 1993-06-29 United Technologies Corporation Composite blade manufacture
US5392514A (en) * 1992-02-06 1995-02-28 United Technologies Corporation Method of manufacturing a composite blade with a reinforced leading edge
US5320494A (en) * 1992-12-22 1994-06-14 United Technologies Corporation Helicopter rotor blade having a replaceable anhedral tip
GB2279114A (en) * 1993-06-15 1994-12-21 Nuaire Ltd Fan impeller blade
US5681513A (en) * 1995-08-04 1997-10-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for fabricating composite structures using continuous press forming
US5720597A (en) * 1996-01-29 1998-02-24 General Electric Company Multi-component blade for a gas turbine
US6447705B1 (en) * 1996-06-28 2002-09-10 Texas Instruments Incorporated Tackifier application for resin transfer molding
US6350513B1 (en) 1997-10-08 2002-02-26 Mcdonnell Douglas Helicopter Company Low density structures having radar absorbing characteristics
US6428380B1 (en) * 1998-02-02 2002-08-06 Michael B. Murphy Method and apparatus for applying a transparent skin to a model airplane
US6296037B1 (en) * 1999-08-10 2001-10-02 Newell Window Furnishings, Inc. Foam core vane for door and window covering
DE19959598A1 (de) * 1999-12-10 2001-06-13 Rolls Royce Deutschland Verfahren zum Herstellen einer Schaufel einer Strömungsmaschine
US6413051B1 (en) 2000-10-30 2002-07-02 General Electric Company Article including a composite laminated end portion with a discrete end barrier and method for making and repairing
US7138028B2 (en) * 2001-07-26 2006-11-21 The Boeing Company Vacuum assisted resin transfer method for co-bonding composite laminate structures
US8246882B2 (en) * 2003-05-02 2012-08-21 The Boeing Company Methods and preforms for forming composite members with interlayers formed of nonwoven, continuous materials
US20080289743A1 (en) * 2003-05-02 2008-11-27 Tsotsis Thomas K Highly porous interlayers to toughen liquid-molded fabric-based composites
US20050257887A1 (en) * 2004-05-24 2005-11-24 Tsotsis Thomas K Method and apparatus for melt-bonded materials for tackification of dry fabric preforms
JP4734527B2 (ja) * 2004-03-17 2011-07-27 川崎重工業株式会社 トラフユニットおよびそれを用いた空気浮上式ベルトコンベア装置
US20080072569A1 (en) * 2006-09-27 2008-03-27 Thomas Ory Moniz Guide vane and method of fabricating the same
DE102006061915A1 (de) * 2006-12-21 2008-07-03 Rolls-Royce Deutschland Ltd & Co Kg Hybrid-Fanschaufel und Verfahren zu deren Herstellung
ES2319152B1 (es) * 2007-07-17 2010-01-11 Fco.Javier Garcia Castro Procedimiento para la fabricacion de palas eolicas.
FR2922188B1 (fr) * 2007-10-11 2010-04-23 Airbus France Cale en materiau composite renforcee et procede de renforcement d'une cale en materiau composite
US20100122459A1 (en) * 2008-11-17 2010-05-20 General Electric Company Method of making wind turbine blade
US8182213B2 (en) * 2009-04-22 2012-05-22 Pratt & Whitney Canada Corp. Vane assembly with removable vanes
WO2011075176A1 (en) * 2009-12-18 2011-06-23 Magna International Inc. Sheet molding compound with cores
PL2524134T3 (pl) 2010-01-14 2014-11-28 Neptco Inc Komponenty łopaty wirnika turbiny wiatrowej i sposoby ich wytwarzania
US10137542B2 (en) 2010-01-14 2018-11-27 Senvion Gmbh Wind turbine rotor blade components and machine for making same
FR2964427B1 (fr) * 2010-09-06 2014-05-09 Messier Dowty Sa Carter de turboreacteur et turboreacteur recevant de tels carters
FR2964411B1 (fr) * 2010-09-06 2012-08-24 Messier Dowty Sa Aube de turboreacteur, notamment une aube de redresseur, et turboreacteur recevant de telles aubes
EP2599714B1 (en) * 2011-11-30 2014-10-08 Hamilton Sundstrand Corporation Propeller blade having compliant adhesive at spar interface
GB201120994D0 (en) * 2011-12-07 2012-01-18 Airbus Uk Ltd Integral stiffener
US9168999B2 (en) * 2012-04-18 2015-10-27 Hamilton Sundstrand Corporation Propeller blade with internal stiffener
US20130280079A1 (en) * 2012-04-18 2013-10-24 Hamilton Sundstrand Corporation Propeller blade with metallic foam spar core
EP2660144A1 (en) * 2012-04-30 2013-11-06 Hamilton Sundstrand Corporation Propeller blade with modified spar stiffness.
US9139287B2 (en) * 2012-06-26 2015-09-22 Hamilton Sundstrand Corporation Propeller blade with carbon foam spar core
WO2014120123A2 (en) 2013-01-29 2014-08-07 United Technologies Corporation Thermoplastic nosecone for a turbine engine
US20150266572A1 (en) * 2014-03-21 2015-09-24 Hamilton Sundstrand Corporation Propeller blade having compliant spar core
US20160032939A1 (en) * 2014-07-31 2016-02-04 General Electric Company Airfoil structures
DE102017105935B4 (de) 2017-03-20 2021-09-02 Preh Gmbh Verfahren zum vollflächigen Verbinden von antiparallel verlaufenden Kontaktflächen eines ersten und zweiten Fügepartners mittels eines Formlings
US10633084B2 (en) * 2017-08-25 2020-04-28 Bell Helicopter Textron Inc. Geodesic composite structures
GB2588381A (en) * 2019-10-14 2021-04-28 Short Brothers Plc Patch material

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630868A (en) * 1949-10-29 1953-03-10 Gen Electric Plastic rotor blade
US2890147A (en) * 1954-12-23 1959-06-09 Owens Corning Fiberglass Corp Method of making metal-reinforced boards of mineral fibers
FR1216393A (fr) * 1957-11-21 1960-04-25 Bristol Aircraft Ltd Perfectionnements apportés à la fabrication de panneaux en résine renforcée par des fibres
US3140846A (en) * 1958-04-14 1964-07-14 Eonair Inc Aircraft covering composition and method of making same
US2929755A (en) * 1958-07-24 1960-03-22 Orenda Engines Ltd Plastic blades for gas turbine engines
US3150024A (en) * 1960-09-20 1964-09-22 Magee Carpet Co Method and apparatus for laminating a layer of plastic and scrim on the backing of carpet
US3321019A (en) * 1965-10-22 1967-05-23 United Aircraft Corp Fiberglass blade
US3525662A (en) * 1966-08-15 1970-08-25 Moore & Munger Composite contoured carpets for automobiles and the like and method for making the same
FR1496905A (fr) * 1966-10-17 1967-10-06 United Aircraft Corp Pale en matière plastique renforcée par des fibres de verre
GB1262704A (en) * 1968-08-10 1972-02-02 Messerschmitt Boelkow Blohm Helicopter rotor blade
US3682738A (en) * 1969-09-03 1972-08-08 Johnson & Johnson Methods and apparatus for depositing powdered materials in patterned areas
DD100058A1 (de) * 1972-10-12 1980-10-01 Schaufeln für Axialventilatoren und Verfahren zur Herstellung dieser Schaufeln
US3873654A (en) * 1973-03-05 1975-03-25 Robert G Smith Process of forming a rigid foam airfoil section
FR2234130B1 (es) * 1973-05-14 1976-04-30 Kamov Nikolai
US4051289A (en) * 1976-04-12 1977-09-27 General Electric Company Composite airfoil construction
JPS53106243A (en) * 1977-02-25 1978-09-16 Nobuhiro Michimae Method of producing belt core cloth having latent curve
GB1587314A (en) * 1978-05-22 1981-04-01 Rolls Royce Method of forming an article from composite material
GB2032832B (en) * 1978-09-16 1982-07-28 Dowty Rotol Ltd Foam-containing structures
DE2855179C2 (de) * 1978-12-20 1982-06-09 Dr. Carl Hahn GmbH, 4000 Düsseldorf Tampon für die Frauenhygiene
BR8105757A (pt) * 1980-10-02 1982-05-25 United Technologies Corp Processo pra a producao de um aerofolio

Also Published As

Publication number Publication date
SE455176B (sv) 1988-06-27
DE3314185C2 (de) 1994-04-28
ES521916A0 (es) 1984-04-01
JPS58211418A (ja) 1983-12-08
US4470862A (en) 1984-09-11
IT8320848A1 (it) 1984-10-29
IT8320848A0 (it) 1983-04-29
GB2120599B (en) 1985-10-09
JPH0242059B2 (es) 1990-09-20
IT1163260B (it) 1987-04-08
NL8301516A (nl) 1983-12-16
FR2527515A1 (fr) 1983-12-02
DE3314185A1 (de) 1983-12-01
CA1195223A (en) 1985-10-15
BR8302056A (pt) 1984-04-17
SE8302233L (sv) 1983-11-28
FR2527515B1 (fr) 1987-03-20
GB2120599A (en) 1983-12-07
SE8302233D0 (sv) 1983-04-20

Similar Documents

Publication Publication Date Title
ES8403366A1 (es) Un metodo para la fabricacion de articulos con refuerzo de fibra.
BR8703883A (pt) Processo para fazer folhas termoplasticas laminadas e artigo feito delas
DE3163869D1 (en) Fibrous composite materials and the production and use thereof
YU307180A (en) Method of manufacturing an adhesive layer applicable at the production of laminaters
JPS6413580A (en) Web for manufacture of sign with dry pressure adhesive agent layer and use thereof
EP0146519A3 (en) Thermoformable laminate structure
GB2083403B (en) Heat recoverable articles
ES8701046A1 (es) Un metodo para formar articulos esponjados o espumados de capas multiples
SI0650828T1 (en) Laminated body, method of production and use thereof
ES8102000A1 (es) Procedimiento para la union firmemente adherente de una es- tructura plana de un material sintetico termoplastico
ES262512U (es) Pared solar.
FR2372696A1 (fr) Produit en forme de nappe ou de feuille
GB1397683A (en) Moulded fibrous panel or tile with finished surface
EP0167956A3 (en) Trellis-work sheet
EP0290912A3 (en) Support of rigid plastic material
JPS6484999A (en) Manufacture of diaphragm for speaker

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19991102