PRESSURE MOULDING PROCESS AND RELATED PRESSURE MOULDING DEVICE

Pressure moulding process, and related device (100), for manufacturing an article, the process comprising: - providing a substrate (70) made of a composite material comprising a first polymeric material and fibres impregnated with said first polymeric material; - providing a coating sheet (71); - he...

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Bibliographische Detailangaben
Hauptverfasser: FUMAGALLI, Andrea, GASTALDI, Sergio Battista, RADI, Matteo
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:Pressure moulding process, and related device (100), for manufacturing an article, the process comprising: - providing a substrate (70) made of a composite material comprising a first polymeric material and fibres impregnated with said first polymeric material; - providing a coating sheet (71); - heating said substrate (70) to a temperature of the substrate (70) greater than 160°C; - subsequently, during a first compression step, compressing under pressure the substrate (70) and the coating sheet (71) between a first conformation surface (1) and a second conformation surface (2) for conforming the substrate (70) and the coating sheet (71) and for firmly fixing the substrate (70) and the coating sheet (71) to each other; - during a second compression step subsequent to the first compression step, compressing under pressure the substrate (70) and the coating sheet (71) between the first (1) and second conformation surface (2) and injecting a second polymeric material in an injection cavity (3) having an outlet mouth (4) onto the first conformation surface (1), wherein a first face of the substrate (70) opposite to the coating sheet (71) is in contact with the first conformation surface (1); - cooling the second polymeric material for firmly fixing the second polymeric material to the first face of the substrate (70), wherein, during the first compression step, a temperature of the first (1) and second conformation surface (2) is less than 120°C. L'invention concerne un procédé de moulage sous pression et un dispositif associé (100), pour la fabrication d'un article, le procédé consistant à : - utiliser un substrat (70) constitué d'un matériau composite comprenant un premier matériau polymère et des fibres imprégnées dudit premier matériau polymère; - utiliser une feuille de revêtement (71); - chauffer ledit substrat (70) jusqu'à une température du substrat (70) supérieure à 160 °C; - ensuite, lors d'une première étape de compression, comprimer sous pression le substrat (70) et la feuille de revêtement (71) entre une première surface de conformation (1) et une seconde surface de conformation (2) pour conformer le substrat (70) et la feuille de revêtement (71) et pour fixer fermement le substrat (70) et la feuille de revêtement (71) l'un à l'autre; - pendant une seconde étape de compression postérieure à la première étape de compression, comprimer sous pression le substrat (70) et la feuille de revêtement (71) entre les première (1) et seconde (2) surfaces de