Method for the manufacture of a multilayered object by...

B - Operations – Transporting – 29 – C

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B29C 45/14 (2006.01)

Patent

CA 2165976

Method and mould for the manufacture of a multilayered object by moulding. According to the method, a lining sheet is placed in a mould (1, 2) so that it at last partially extends beyond the mould, a thermoplastic resin being injected under said lining sheet (3). The thermoplastic resin (4) is also spread under the lining sheet (3) to form the inner layer of the object by creating a resin surplus (9) in the peripheral portion (10) of the object. Finally, the excess portion (11) of the lining sheet (3) is folded onto the mould (1, 2), thereby sandwiching said resin surplus (9) between the lining sheet (3) and a portion of the mould (9) until the resin sets.

L'invention est relative à un procédé et à un moule de fabrication d'un objet multicouche par moulage. Selon le procédé, on place dans un moule (1, 2) une feuille de revêtement en débordement, au moins partiel, par rapport au moule, et on injecte sous ladite feuille de revêtement (3) de la résine thermoplastique (4). Par ailleurs, on répartit sous la feuille de revêtement (3) la résine thermoplastique (4) pour constituer la couche interne de l'objet en créant une réserve de résine (9) dans la partie périphérique (10) de l'objet. Enfin, on applique le débord (11) de la feuille de revêtement (3) vers le moule (1, 2) en prenant en sandwich ladite réserve (9) entre la feuille de revêtement (3) et une partie du moule (1) jusqu'à la prise de la résine.

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