Method for in-mold lamination of foils
AssigneeBayer MaterialScience AG
InventorsAxel Kaminski, Roland Künzel
Life of this patent
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Abstract
A method is described for the back-moulding of sheets (7) with thermoplastics, in particular of printed sheets to protect the decorated surface against scratching or detachment, in which a sheet (7) that is initially separated from the moulded-article wall is pressed against the moulded-article wall by the melt front (3).
Claims9
Method for the back-moulding of sheets printed on their rear side with thermoplastic, in an injection-moulding device having mould cavity (1) with a wall (9) and an opposite wall (5), characterised in that the sheet (7) is place in the mould cavity (1) of the injection-moulding tool (2) in such a way that it is initially applied, before the molten plastic enters, with its edge (4) that meets the front of the melt (3) against the opposite wall (5) of the mould cavity (1), whereas the rest of the sheet is kept separated from the wall (9), and in that the part (6) of the sheet (7) that is separated from the wall (9) is pressed against the opposite wall (5) by the incoming melt front advancing in the mould cavity (1), the support of the sheet (7) being released the same time, so that the rest of the sheet (7) is also applied against the opposite wall (5) of the mould cavity (1).
Dependencies are inferred from the claim text.