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WO2000038905A1 - Procede de moulage et appareil correspondant - Google Patents

Procede de moulage et appareil correspondant Download PDF

Info

Publication number
WO2000038905A1
WO2000038905A1 PCT/IE1999/000143 IE9900143W WO0038905A1 WO 2000038905 A1 WO2000038905 A1 WO 2000038905A1 IE 9900143 W IE9900143 W IE 9900143W WO 0038905 A1 WO0038905 A1 WO 0038905A1
Authority
WO
WIPO (PCT)
Prior art keywords
mould
flexible material
lid
composite
flexible
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/IE1999/000143
Other languages
English (en)
Inventor
Adrian Murtagh
Patrick Joseph Feerick
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.)
Kingspan Research and Developments Ltd
Original Assignee
Kingspan Research and Developments Ltd
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 Kingspan Research and Developments Ltd filed Critical Kingspan Research and Developments Ltd
Priority to AU17945/00A priority Critical patent/AU1794500A/en
Publication of WO2000038905A1 publication Critical patent/WO2000038905A1/fr
Anticipated expiration legal-status Critical
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
    • B29C70/30—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
    • B29C70/342—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 isostatic pressure

Definitions

  • the invention relates to a moulding process and in particular to a process for moulding of fibre-reinforced composite materials.
  • This invention is therefore directed towards providing an improved efficient moulding process for such composite materials.
  • thermoplastics material heating the mould internally to melt the thermoplastics material; maintaining the vacuum to consolidate the fibre-reinforced thermoplastics material;
  • the fibre is a reinforcing fibre of glass, carbon or other high tensile material.
  • the flexible material is a nylon bagging film or a silicon rubber sheet.
  • the composite material is a co-mingled glass fibre/thermoplastics material.
  • the thermoplastics material is selected from one or more of polypropylene, polyethylene, polyester or modified polyester.
  • thermoplastics material melts at a temperature of less than 230°C.
  • the mould is an open-topped mould.
  • the mould includes a top lid.
  • the lid forms part of the mould.
  • the lid includes heat insulation and/or heat reflecting means.
  • the lid includes a heat source.
  • the heat source may be infra-red lamps.
  • the heat source may include means for heating at least a portion of the surface of the lid.
  • the process may include circulating heated air over the flexible material.
  • the flexible film may be in the form of an inflatable bladder.
  • the process includes the step of interposing a breather material/release film between the flexible film and the composite material.
  • the invention provides moulding apparatus comprising a first mould part having embedded heating and/or cooling means, a flexible material for application over a composite thermoplastic material laid on the first mould part, sealing means for sealing the flexible material to the first mould part, and a vacuum port for drawing a vacuum between the flexible material and the first mould part for moulding the composite material.
  • the flexible material may have an integral heating means.
  • the apparatus includes means for directing heat to the flexible material.
  • the apparatus includes a second mould part or lid.
  • the lid may be at least partially lined with a heat reflective material.
  • the lid includes heat insulating means such as a block of heat insulation material.
  • the second mould part includes a heat source.
  • the heat source may comprise infra-red heating lamps.
  • the heat source is embedded in the second mould part.
  • the second mould part includes channels for delivery of heated and/or cooled air to the flexible material.
  • the apparatus includes circulating means, such as a fan for circulating heated air over the flexible material.
  • the flexible material is an inflatable bladder.
  • the apparatus may include a breather material and/or release film for interposing between the flexible material and the composite material.
  • the invention further provides a moulded article whenever produced by a process and/or using an apparatus of the invention.
  • Fig. 1 is a schematic cross sectional view illustrating a moulding process of the invention
  • Figs. 2 to 6 are cross sectional views of modified moulding systems.
  • Fig. 7 is a cross sectional view illustrating the moulding of a composite material. Detailed Description
  • a mould 1 with a forming tool which in this case is of upwardly facing open channel shape.
  • the mould has internal heating means provided by heating wires 2 and internal cooling means provided by channels 3 through which a cooling fluid is circulated.
  • a composite material somewhat in the form of a cloth 4 is draped over the mould 1.
  • a flexible nylon bagging film or silicone rubber sheet 6 is then placed over the composite material 4 and sealed around the edges.
  • a vacuum V is then applied between the bagging film 6 and the mould 1. This causes the air to be evacuated from the area occupied by the composite material and a uniform vacuum pressure P of approximately 15 psi is applied over the surface of the composite sheet lay-up 4.
  • the mould 1 is then heated using the embedded electrical heating wires 2.
  • a vacuum is continuously applied to consolidate the thermoplastics material.
  • the thermoplastics melts to form a fluid with a low enough viscosity to flow within the lay-up and completely wet-out the fibres.
  • the temperature is reduced by forced cooling using a cooling fluid such as air circulated through the channels 3, the vacuum is removed and a fully moulded part is removed.
  • the composite material is a co-mingled glass fibre/polypropylene continuous fibre composite material.
  • the glass fibre During the drawing process for the glass fibre, fibres of polypropylene are interwoven with the glass fibres to form a continuous yarn. This yarn is then woven to form a "cloth" which is available in various weave forms, patterns and thicknesses.
  • Polyethylene and other similar thermoplastics materials may be used as an alternative to polypropylene.
  • One preferred product has been developed by Vetrotex S.A. of France and is available under the name Twintex from Europrojects Ltd, UK.
  • the moulding process of the invention provides a very efficient process for moulding such composite materials at relatively low temperature (typically approximately 200°C) and at low pressures. Energy efficiency is optimised as are the moulding cycle times required.
  • the mould may include a lid which is placed on the mould.
  • the lid may be flat to reflect heat onto the lay-up material.
  • a second heating source may also be provided.
  • Such a heat source may be an infra-red source or the like.
  • the mould includes a lid 20 which has a reflective foil 21.
  • the lid 20 is also insulated to further concentrate the heating effect.
  • a second heating source in the form of infra-red lamps 30 is provided.
  • the lid 35 has a surface which is heated by embedded heating wires 36 and a fan 37 is provided to circulate heated air and further improve the heating efficiency.
  • a silicon rubber sheet or bag 60 is placed over the composite material and is sealed around the edges.
  • a heating network is provided in the silicon rubber sheet or bag 60 to provide directed localised heating. Heating from both sides is advantageous, especially for relatively large wall thicknesses.
  • the lid includes channels 40 for circulation of heated air directly to the bladder 4.
  • FIG. 7 Another version is illustrated in Fig. 7 which is similar to the arrangement of Fig.
  • the material to be moulded is a composite material comprising a lower fabric skin 50, an upper fabric skin 51 and an intervening foam insulation layer 52.
  • the heating is arranged to heat only the upper and lower skins 50, 51 to avoid melting of the foam and thereby retaining its integrity.
  • the mould may be in two halves on which composite material is laid up.
  • An inflatable bladder may be provided in the mould in this case.

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)

Abstract

Selon cette invention, un moule (1) possède des fils de chauffage internes (2) et des canaux (3) destinés à la circulation d'un fluide de refroidissement. Un matériau composite se présente comme un morceau de tissu (4) fait à partir d'un composite à base de fibres enchevêtrées en continu comprenant des fibres de verre / de polypropylène, ledit tissu recouvrant le moule (1). On place un film d'emballage en Nylon souple ou une feuille de caoutchouc de silicone (6) par-dessus le tissu en matériau composite (4) et on le scelle autour des bords. Un vide V est ensuite appliqué entre le film (6) et le moule. L'air est évacué depuis la zone occupée par le matériau composite (4), et l'on applique un vide uniforme P de l'ordre de 15 psi sur toute la surface de la feuille composite (4). Après chauffage et refroidissement, on fait cesser l'action du vide et l'on retire du moule la pièce entièrement moulée.
PCT/IE1999/000143 1998-12-23 1999-12-23 Procede de moulage et appareil correspondant Ceased WO2000038905A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU17945/00A AU1794500A (en) 1998-12-23 1999-12-23 Moulding process and apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IE981101 1998-12-23
IE981101 1998-12-23
IE990495 1999-06-15
IE990495 1999-06-15

Publications (1)

Publication Number Publication Date
WO2000038905A1 true WO2000038905A1 (fr) 2000-07-06

Family

ID=26320232

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IE1999/000143 Ceased WO2000038905A1 (fr) 1998-12-23 1999-12-23 Procede de moulage et appareil correspondant

Country Status (2)

Country Link
AU (1) AU1794500A (fr)
WO (1) WO2000038905A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100534783C (zh) * 2006-03-15 2009-09-02 东原材料科技股份有限公司 玻璃纤维补强塑胶材的表面处理方法
WO2011113432A1 (fr) 2010-03-19 2011-09-22 Ssp Technology A/S Moule chauffé et utilisation dudit moule pour former des composites renforcés par des fibres
CN103899911A (zh) * 2014-03-28 2014-07-02 哈尔滨玻璃钢研究院 复合材料绝热支承件一体化复合成型方法
CN104162996A (zh) * 2014-06-30 2014-11-26 江苏恒神纤维材料有限公司 碳纤维复合材料u型件的制造工艺
FR3007317A1 (fr) * 2013-06-25 2014-12-26 Salomon Sas Procede de fabrication d'un objet creux
CN104943199A (zh) * 2014-03-26 2015-09-30 福特全球技术公司 复合材料的成型方法以及成型装置
CN109834957A (zh) * 2017-11-28 2019-06-04 深圳光启尖端技术有限责任公司 一种预浸料的成型方法及其成型模具
KR20220040056A (ko) 2020-09-23 2022-03-30 주식회사 다산네트웍스 차량용 전자제어장치 테스트 시스템

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4915896A (en) * 1987-09-01 1990-04-10 Phillips Petroleum Company Vacuum bagging process for fiber reinforced thermoplastics
EP0389798A2 (fr) * 1989-03-31 1990-10-03 General Electric Company Procédé pour imprégner un renforcement en fibres de verre avec une matière thermoplastique et pour fabriquer des objets à partir des fibres de verre imprégnées
EP0405261A2 (fr) * 1989-06-26 1991-01-02 BASF Aktiengesellschaft Mise en forme avec une seule membrane, de matériaux composites souples impregnés de résine
EP0865900A1 (fr) * 1997-03-12 1998-09-23 Alternatives Energies Procédé de fabrication d'une pièce de grandes dimensions en matériau composite et pale d'hélice, en particulier d'éolienne, fabriqué selon ce procédé

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4915896A (en) * 1987-09-01 1990-04-10 Phillips Petroleum Company Vacuum bagging process for fiber reinforced thermoplastics
EP0389798A2 (fr) * 1989-03-31 1990-10-03 General Electric Company Procédé pour imprégner un renforcement en fibres de verre avec une matière thermoplastique et pour fabriquer des objets à partir des fibres de verre imprégnées
EP0405261A2 (fr) * 1989-06-26 1991-01-02 BASF Aktiengesellschaft Mise en forme avec une seule membrane, de matériaux composites souples impregnés de résine
EP0865900A1 (fr) * 1997-03-12 1998-09-23 Alternatives Energies Procédé de fabrication d'une pièce de grandes dimensions en matériau composite et pale d'hélice, en particulier d'éolienne, fabriqué selon ce procédé

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100534783C (zh) * 2006-03-15 2009-09-02 东原材料科技股份有限公司 玻璃纤维补强塑胶材的表面处理方法
CN102844161B (zh) * 2010-03-19 2015-12-09 Ssp科技公司 用于形成纤维增强复合物的加热模具和该模具的使用
AU2010348959B2 (en) * 2010-03-19 2013-08-01 Ssp Technology A/S A heated mould and use of said mould for forming fibre reinforced composites
CN102844161A (zh) * 2010-03-19 2012-12-26 Ssp科技公司 用于形成纤维增强复合物的加热模具和该模具的使用
WO2011113432A1 (fr) 2010-03-19 2011-09-22 Ssp Technology A/S Moule chauffé et utilisation dudit moule pour former des composites renforcés par des fibres
CN105377530A (zh) * 2013-06-25 2016-03-02 萨洛蒙股份有限公司 空心物品的制造方法
US10112357B2 (en) 2013-06-25 2018-10-30 Salomon S.A.S. Method for making a hollow object
CN105377530B (zh) * 2013-06-25 2018-06-19 萨洛蒙股份有限公司 空心物品的制造方法
FR3007317A1 (fr) * 2013-06-25 2014-12-26 Salomon Sas Procede de fabrication d'un objet creux
WO2014207325A1 (fr) * 2013-06-25 2014-12-31 Salomon S.A.S. Procédé de fabrication d'un objet creux
CN104943199A (zh) * 2014-03-26 2015-09-30 福特全球技术公司 复合材料的成型方法以及成型装置
CN103899911A (zh) * 2014-03-28 2014-07-02 哈尔滨玻璃钢研究院 复合材料绝热支承件一体化复合成型方法
CN104162996A (zh) * 2014-06-30 2014-11-26 江苏恒神纤维材料有限公司 碳纤维复合材料u型件的制造工艺
CN109834957A (zh) * 2017-11-28 2019-06-04 深圳光启尖端技术有限责任公司 一种预浸料的成型方法及其成型模具
KR20220040056A (ko) 2020-09-23 2022-03-30 주식회사 다산네트웍스 차량용 전자제어장치 테스트 시스템

Also Published As

Publication number Publication date
AU1794500A (en) 2000-07-31

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