Protective film consisting of a hot-melt adhesive and method and device for applying said film
AssigneeSika Technology AG
InventorMartin Linnenbrink
Life of this patent
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Abstract
A protective film of plastic. The film is produced in a single-ply, unbacked form from a hot-melt adhesive.
Claims21
A protective film (12) of plastic, characterized in that it is produced in single-ply, unbacked form from a hot-melt adhesive (14, 14′).
A method of applying a protective film, characterized in that a hot-melt adhesive (14, 14′) is heated in a primary melting region (18) to application temperature, in that it subsequently flows off out of the primary melting region (18), the flow-off and application temperature being regulated such that a film (12) of desired width is formed, and in that a product to be protected with the film (12) is moved transversely to the film (12) in such a way that the film (12) covers the product in desired fashion.
A device (16, 16′) for applying a protective film (12) of hot-melt adhesive (14, 14′), having a primary melting region (18), in which the hot-melt adhesive (14, 14′) is heated to its application temperature, and having an application unit (20) via which the liquefied hot-melt adhesive (14) flows off in such a way that it forms a coherent film (12) of predetermined width and predetermined thickness.
Dependencies are inferred from the claim text.