Process for the production of a composite part with multi-part outer layer, and composite part

A method for production of a composite part, in particular an interior trim, with a multipart cover layer and a foam layer which is connected to the cover layer on a rear-side, containing the steps:

• a) arrangement of a first skin and of a second skin with angled-off end regions on a surface of a tool in such a manner that the angled-off end regions of the first and second skin are directed, on the one hand, away from the surface of the tool and, on the other hand, are adjacent to each other, wherein at least the first skin is configured in the end region thereof with one or more sealing lips integral with the first skin and wherein the at least one sealing lip is orientated, during arrangement of the first skin in the tool, towards the end region of the second skin and the first skin and the second skin are disposed on the right and left-hand side of a projection situated on the tool surface;
• b) application of a low pressure in the region of the position of the angled-off end regions so that the angled-off end regions are pressed against each other flatly and so that the at least one sealing lip contacts the second skin, where the low pressure is a partial vacuum applied through the projection situated in the tool surface;
• and
• c) rear-foaming of the first and second skin with a foam material while applying the low pressure.

A method for production of a composite part, in particular an interior trim, with a multipart cover layer and a foam layer which is connected to the cover layer on a rear-side, containing the steps:

• a) arrangement of a first skin and of a second skin with angled-off end regions on a surface of a tool in such a manner that the angled-off end regions of the first and second skin are directed, on the one hand, away from the surface of the tool and, on the other hand, are adjacent to each other, wherein the first skin and the second skin are disposed on the right and left-hand side of a projection situated on the tool surface;
• b) application of a sealing partial vacuum pressure in the region of the position of the angled-off end regions so that the angled-off end regions are pressed against each other flatly, where a fixing partial vacuum pressure is weaker than the sealing partial vacuum pressure, the fixing partial vacuum pressure being applied for fixing the first and second skin on the surface of the tool;
• and
• c) rear-foaming of the first and second skin with a foam material while applying the sealing partial vacuum pressure between the angled-off end regions by the projection.