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1. WO2020065448 - PROCESS AND APPARATUS FOR PRODUCING AN ARTICLE MADE OF COMPOSITE MATERIAL

Publication Number WO/2020/065448
Publication Date 02.04.2020
International Application No. PCT/IB2019/057852
International Filing Date 18.09.2019
IPC
B29C 70/46 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
42for producing articles of definite length, i.e. discrete articles
46using matched moulds, e.g. for deforming sheet moulding compounds or prepregs
B29C 70/44 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
42for producing articles of definite length, i.e. discrete articles
44using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
CPC
B29C 70/44
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
42for producing articles of definite length, i.e. discrete articles
44using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
Applicants
  • NOVATION TECH S.P.A. [IT]/[IT]
Inventors
  • GABRIELE, Tiveron
Agents
  • SUSANETTO, Carlo
  • CANTALUPPI, Stefano
  • LOCAS, Davide
  • FABRIS, Stefano
  • MORABITO, Sara
  • LEONE, Mario
  • CURRADO, Luisa
  • GHIRARDI, Valeria
  • MONTEVECCHI, Emma
Priority Data
10201800000885624.09.2018IT
Publication Language English (EN)
Filing Language Italian (IT)
Designated States
Title
(EN) PROCESS AND APPARATUS FOR PRODUCING AN ARTICLE MADE OF COMPOSITE MATERIAL
(FR) PROCÉDÉ ET APPAREIL DE PRODUCTION D'UN ARTICLE EN MATÉRIAU COMPOSITE
Abstract
(EN)
A process and apparatus for producing an article made of a composite material, comprising the phases of: • - providing a semi-finished product (2) comprising at least one layer of fibres embedded in a polymeric matrix which is not cross-linked; • - positioning the semi-finished product in a first unit (11) of a mould (10); • - positioning a separator element (20) above the semi-finished product (2), which separator element peripherally abuts the first unit (11) of the mould so as to define a first chamber (22), in which chamber the semi-finished product is contained, • - closing the mould (10) by means of a second unit (12) of the mould so as to define a second chamber (23) between the second unit (12) and the separator element (20), • - depressurising the first chamber (22), • - introducing gas into the second chamber (23) so as to push the separator element (20) against the semi-finished product (2) at a first predefined pressure, and • - bringing the temperature inside the first chamber (22) to a predefined value so as to cross-link the polymeric matrix and obtain the article. Wherein a second pressure that is greater than said first pressure is exerted on a limited region (5) of said semi-finished product by means of said second unit (12) of said mould directly contacting said separator element (20) so as to subject different regions of said semi- finished product to differentiated pressures.
(FR)
L'invention concerne un procédé et un appareil de production d'un article en matériau composite, comprenant les phases consistant à : fournir un produit semi-fini (2) comprenant au moins une couche de fibres incorporée dans une matrice polymère qui n'est pas réticulée; positionner le produit semi-fini dans une première unité (11) d'un moule (10); positionner un élément séparateur (20) au-dessus du produit semi-fini (2), lequel élément séparateur vient en butée périphérique contre la première unité (11) du moule de manière à délimiter une première chambre (22), dans laquelle est contenu le produit semi-fini, fermer le moule (10) au moyen d'une seconde unité (12) du moule de manière à délimiter une seconde chambre (23) entre la seconde unité (12) et l'élément séparateur (20), dépressuriser la première chambre (22), introduire du gaz dans la seconde chambre (23) de manière à pousser l'élément séparateur (20) contre le produit semi-fini (2) à une première pression prédéfinie, et amener la température à l'intérieur de la première chambre (22) à une valeur prédéfinie de manière à réticuler la matrice polymère et à obtenir l'article. Une seconde pression qui est supérieure à ladite première pression est exercée sur une région limitée (5) dudit produit semi-fini au moyen de ladite seconde unité (12) dudit moule en contact direct avec ledit élément séparateur (20) de manière à soumettre différentes régions dudit produit semi-fini à des pressions différenciées.
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