EP0208685A1 - Procedes et appareil de fabrication d'articles a partir de materiaux thermoplastiques moussables - Google Patents

Procedes et appareil de fabrication d'articles a partir de materiaux thermoplastiques moussables

Info

Publication number
EP0208685A1
EP0208685A1 EP85901486A EP85901486A EP0208685A1 EP 0208685 A1 EP0208685 A1 EP 0208685A1 EP 85901486 A EP85901486 A EP 85901486A EP 85901486 A EP85901486 A EP 85901486A EP 0208685 A1 EP0208685 A1 EP 0208685A1
Authority
EP
European Patent Office
Prior art keywords
mold
foaming
pressure
thermoplastic
methods
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.)
Withdrawn
Application number
EP85901486A
Other languages
German (de)
English (en)
Inventor
Devendra Pal Singh
John William Ashton
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.)
HR Smith Technical Developments Ltd
Original Assignee
HR Smith Technical 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 HR Smith Technical Developments Ltd filed Critical HR Smith Technical Developments Ltd
Publication of EP0208685A1 publication Critical patent/EP0208685A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/02—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid pressure
    • 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
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic 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
    • 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
    • B29C43/146—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 multilayered 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
    • 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
    • B29C43/20—Making multilayered or multicoloured articles
    • B29C43/203—Making multilayered articles
    • B29C43/206—Making multilayered articles by pressing the material between two preformed layers, e.g. deformable layers
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/08—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means for dielectric heating
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • 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
    • B29K2105/16—Fillers
    • B29K2105/165—Hollow fillers, e.g. microballoons or expanded particles
    • 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
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

Différents procédés de moulage de matériaux thermoplastiques moussables sont décrits. Une méthode décrite implique le moussage de matériaux thermoplastiques dans un moule ayant un noyau "de remplacement" qui peut comprendre plusieurs organes interposés entre deux parties d'un moule. Le matériau thermoplastique est placé entre les parties de moule et le (ou chacun) des organes de noyau de remplacement interposés. De cette manière, une pluralité d'articles moulés en mousse sont produits en une seule opération de moulage. Le noyau de remplacement peut consister en une préforme en matériau thermoplastique de sorte qu'il est possible de mouler une construction en sandwich composite. Un autre procédé décrit permet la production d'articles en matériau thermoplastique ayant une structure cellulaire déformée uniformément obtenue en chauffant le matériau à mousser pendant qu'il est maintenu sous pression. Lors de la libération de la pression, une expansion rapide du matériau moussant a lieu, laquelle est contrainte par la forme du moule. Comme résultat, on obtient une structure cellulaire dans l'article moussé, les dimensions de la cellule dans une ou plusieurs directions étant différentes des dimensions dans d'autres directions. Deux méthodes permettant d'obtenir ce résultat sont décrites. Il est également décrit le moulage de matériaux thermoplastiques en utilisant une unité de pression à diaphragme ayant un diaphragme élastomère hermétiquement étiré en travers d'une surface d'une partie de poinçonnage d'un moule. En utilisant cette unité pour tenir le matériau de la préforme sous pression jusqu'à atteindre la température de moussage puis libérer soudainement la pression sur le diaphragme, on obtient un matériau moussé avec les caractéristiques décrites.
EP85901486A 1984-03-21 1985-03-19 Procedes et appareil de fabrication d'articles a partir de materiaux thermoplastiques moussables Withdrawn EP0208685A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848407309A GB8407309D0 (en) 1984-03-21 1984-03-21 Foamed thermoplastics materials
GB8407309 1984-03-21

Publications (1)

Publication Number Publication Date
EP0208685A1 true EP0208685A1 (fr) 1987-01-21

Family

ID=10558433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85901486A Withdrawn EP0208685A1 (fr) 1984-03-21 1985-03-19 Procedes et appareil de fabrication d'articles a partir de materiaux thermoplastiques moussables

Country Status (6)

Country Link
EP (1) EP0208685A1 (fr)
JP (1) JPS61501502A (fr)
AU (1) AU4113685A (fr)
GB (2) GB8407309D0 (fr)
IT (1) IT1184914B (fr)
WO (1) WO1985004131A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8703084D0 (en) * 1987-02-11 1987-03-18 Crompton G Moulded components
EP0412903B1 (fr) * 1989-08-07 1994-01-05 Electricite De France Panneau en matériau composite résistant au feu et aux impacts, étanche et acoustiquement absorbant, et son procédé de fabrication
FR2650610B1 (fr) * 1989-08-07 1994-06-10 Hamon Procede de fabrication d'un element coupe-feu en materiau composite, et element coupe-feu obtenu par ce procede
DE3930526A1 (de) * 1989-09-13 1991-03-21 Grammer Ag Verfahren zur herstellung eines hinterschaeumten polsterteils und vorrichtung zur durchfuehrung des verfahrens
FR2663880B1 (fr) * 1990-06-29 1994-04-29 Roth Sa Freres Procede de fabrication de matelassures en mousse de polyurethane coulee in situ dans une coiffe en textile et coussin ainsi obtenu.
NL9001522A (nl) * 1990-07-04 1992-02-03 Schreiner Luchtvaart Werkwijze voor het vervaardigen van een voorwerp bestaande uit een schuimkern en eventueel een of meer afdeklagen.
AU8009898A (en) * 1997-04-09 1998-10-30 Dbs Beschichtung Und Systemetechnik Gmbh Method for the production of walls for closed profile sections and object
JP4894116B2 (ja) * 2001-09-20 2012-03-14 トヨタ紡織株式会社 発泡部を備えるプレス成形体の製造方法
CN101733887B (zh) * 2009-12-29 2013-07-10 杭州兴源过滤科技股份有限公司 双面隔膜滤板加热模压成型装置及成型方法
DE102017115142A1 (de) * 2017-07-06 2019-01-10 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zur Herstellung eines mehrlagigen Verbundbauteils
CN109016437B (zh) * 2018-08-30 2024-07-09 谷田(广东)电子科技有限公司 头梁护套的制作模具及头梁护套的制备方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB696487A (en) * 1949-07-25 1953-09-02 A C I Plastics Proprietary Ltd Improvements in plastic moulding machines and moulds therefor
DE1704194A1 (de) * 1967-02-07 1971-03-04 Meyer Fa Rudolf Verfahren zum Herstellen von Formkoerpern
FR1595388A (fr) * 1968-01-02 1970-06-08
DE1935735A1 (de) * 1968-07-18 1970-07-02 Lion Fat Oil Co Ltd Verfahren zur Herstellung zelliger Kunststoffprodukte
DE2007054A1 (en) * 1970-02-17 1971-09-02 Buettner Schilde Haas Ag Resin-glass fibre laminates
US3973892A (en) * 1972-01-17 1976-08-10 Husky Injection Molding Systems Injection-molding machine with transverse feed
US4148854A (en) * 1976-04-29 1979-04-10 Freeman Chemical Corporation Matched die molding of fiber reinforced plastic articles
FR2481996A1 (fr) * 1980-05-08 1981-11-13 Soule Fer Froid Procede de fabrication de pieces moulees en materiaux composites et moules employes pour la mise en oeuvre du procede
AT377228B (de) * 1980-07-24 1985-02-25 Lignotock Verfahrenstech Verfahren und vorrichtung zum herstellen von formteilen aus ebenen wirrfaservliesmatten, vorzugsweise aus mit bindemittel versehenen zellulose-oder lignozellulosefasern
US4337321A (en) * 1980-12-02 1982-06-29 The Dow Chemical Company Multi-staged foaming of thermoplastic resin
AU553465B2 (en) * 1981-04-15 1986-07-17 Asahi-Dow Ltd. Thermoplastic insulation
FR2511297B1 (fr) * 1981-08-13 1986-07-18 Saplest Sa Procede de fabrication de pieces en matiere synthetique expansee a caracteristiques physiques variables

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8504131A1 *

Also Published As

Publication number Publication date
IT1184914B (it) 1987-10-28
IT8567271A0 (it) 1985-03-20
JPS61501502A (ja) 1986-07-24
GB8407309D0 (en) 1984-04-26
GB8507117D0 (en) 1985-04-24
AU4113685A (en) 1985-10-11
IT8567271A1 (it) 1986-09-20
GB2155846A (en) 1985-10-02
WO1985004131A1 (fr) 1985-09-26

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Inventor name: ASHTON, JOHN WILLIAM

Inventor name: SINGH, DEVENDRA PAL