| 摘要 |
The invention relates to a mould (1) for back-injection of a plastic film (4) with molten plastic, and a corresponding process for producing a plastic moulded article in the cavity (11) formed by a first and second mould part (2, 3). The first mould part (2) has a decorating surface zone (21), a clamping surface zone (22) arranged outside of the latter, and a recessed zone (23) arranged at least outside of the decorating surface zone (21). The second mould part (3) has an inlet (31) for the molten plastic and a projecting zone (33). The projecting zone (33) is arranged so that, when the tool is closed, it engages with the recessed zone (23), in order to hold the plastic film (4) arranged between the first mould part (2) and the second mould part (3), lying on the clamping surface zone (22) of the first mould part, in the recessed zone (23) under tension. |
| 主权项 |
1. A mold for back-injection of a plastic film with molten plastic, the mold comprising:
a first mold part having a decorating surface zone, a clamping surface zone arranged in the region of the outer edge of the decorating surface zone and a recessed zone arranged within the clamping surface zone or in an outer edge of the clamping surface zone or externally at a distance from the outer edge of the clamping surface zone; a second mold part forming a cavity together with the first mold part; and a fixing device, by which the plastic film to be back-injected can be held in place on the first mold part, lying on the clamping surface zone of the first mold part, prior to mold closure, the fixing device being formed by a transfer device of the plastic film or by a pressing device supported on the first or on the second mold part, wherein the second mold part has an inlet for the molten plastic and a projecting zone, wherein the projecting zone of the second mold part is arranged so that the recessed zone of the first mold part and the projecting zone of the second mold part during tool closure form an interlocking engaging device, with which the interposed plastic film is clamped in the manner of a drawing operation and when the tool is closed, the projecting zone of the second mold part engages in the recessed zone of the first mold part, in order to hold the plastic film arranged between the first mold part and the second mold part, lying at least on the clamping surface zone of the first mold part, in the recessed zone of the first mold part under tension of the plastic film, and wherein the decorating surface zone is arranged in the same plane as the clamping surface zone of the first mold part. |
