Method for sealing a seam, a composite part and use of same
AssigneesKraussMaffei Technologies GmbH, Covestro Deutschland AG
InventorsSebastian Eickens, Christian Kube, Dieter Schendzielorz
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Abstract
A method for sealing seams of a surface layer containing the seams, the sealing being performed on the side of the surface layer to which a foam layer or adhesive layer is connected in a planar manner. The method further relates to a composite part and the use of same. The method preferably includes a non-contact, planar application of a sealing material onto the seam region along the course of the seam. With the help of the method it is possible to prevent the penetration of the foam or adhesive material in a subsequent processing step and at the same time to eliminate the disadvantages of the existing methods.
Claims15
A method for sealing a seam (4) of a surface layer (2) containing this seam (4), with two sides (2a and 2b), which is part of a composite part (1), which has at least the surface layer (2) and a polyurethane foam layer or adhesive layer (8) applied in a planar manner on one of the sides (2a or 2b) of the surface layer, comprising the following method steps:
- i) spraying or casting of a sealing material (3) onto a planar application region on the side of the surface layer (2) to which the polyurethane foam layer or adhesive layer (8) is connected, wherein the edge of the planar application region surrounds the seam (4),
- ii) hardening and adhering of the sprayed on or cast sealing material (3),
- iii) applying the polyurethane foam layer (8) onto the side of the surface layer (2) on which the hardened sealing material (3) is situated,
- wherein the sealing material (3) is a fluid reactive mixture based on polyurethane.
A composite part (1) consisting of
- a) a seam (4)
- b) a surface layer (2), containing this seam (4), with two sides (2a and 2b)
- c) a polyurethane foam layer or adhesive layer (8) applied in a planar manner on one of the sides (2a or 2b) of the surface layer (2)
- d) a planar application region of a sealing material (3) of a fluid reactive mixture based on polyurethane on the side of the surface layer (2) to which the polyurethane foam layer or adhesive layer (8) is connected, wherein the edge of the planar application region surrounds the decorative seam (4).
Dependencies are inferred from the claim text.