US 12,589,528 B2Granted

Pressure moulding process and related pressure moulding device

AssigneePersico S.P.A.

InventorsAndrea Fumagalli, Sergio Battista Gastaldi, Matteo Radi

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Abstract

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.

Claims11

Dependent claims

A pressure moulding process for manufacturing an article, the process comprising:

providing a substrate made of a composite material comprising a first polymeric material and fibres impregnated with said first polymeric material;
providing a coating sheet;
heating said substrate to a temperature of said substrate greater than 160° C.;
subsequently, during a first compression step, compressing under pressure said substrate and said coating sheet between a first conformation surface and a second conformation surface for conforming said substrate and said coating sheet and for firmly fixing said substrate and said coating sheet to each other;
during a second compression step subsequent to said first compression step, compressing under pressure said substrate and said coating sheet between said first and second conformation surface and injecting a second polymeric material in an injection cavity having an outlet mouth onto said first conformation surface, wherein a first face of said substrate opposite to said coating sheet is in contact with said first conformation surface;
cooling said second polymeric material for firmly fixing said second polymeric material to said first face of the substrate,
wherein the process comprises positioning at least one portion of said outlet mouth at a first distance from said second conformation surface during said first compression step, and at a second distance from said second conformation surface during said second compression step, said second distance being smaller than said first distance, and
wherein a first half-mould having said first conformation surface and a second half-mould having said second conformation surface are movable relative to each other along a movement direction and respectively have a first and a second main body, which at least in part define respectively said first and second conformation surface.

5 more elements

A pressure moulding device comprising:

a first half-mould having a first conformation surface and a second half-mould having a second conformation surface, said first half-mould comprising an injection cavity having an outlet mouth onto said first conformation surface, wherein said first and second half-mould have a first and a second main body respectively, which at least partly define said first and second conformation surface respectively;
an injection unit in fluid communication with said injection cavity, and
a spacer movable between:
a first position in which is interposed in contact between said first and second half-mould, when thrusted against each other, for keeping at least one portion of said outlet mouth at a first distance from the second conformation surface, and
a second position in which leaves free said first and second half-mould, when thrusted against each other, for keeping said at least one portion of said outlet mouth at a second distance from the second conformation surface, said second distance being smaller than said first distance.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/570,234Filed 18 May 2022
Priority: IT 10202100001603418 Jun 2021
Published: US 2024/0286322 A129 Aug 2024
Granted: 31 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification39 codes

B29C 43/146
In several steps: for making multilayered articles
B29C 43/003
Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor: characterised by the choice of material
B29C 43/14
Of articles of definite length, i.e. discrete articles: in several steps
B29C 43/18
Of articles of definite length, i.e. discrete articles: incorporating preformed parts or layers, e.g. compression moulding around inserts or for…