Process for covering cut edge of a container opening with protective layer
AssigneeRuediger Haaga GmbH
InventorsWerner Stahlecker, Berthold Mueller
Life of this patent
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Abstract
A container comprises an opening whose cut edge is covered by a protective covering layer. The protective covering layer is formed to have a tube-shaped area in which a plane area is joined to both ends. The tube-shaped area covers the cut edge of the opening. One plane area adheres to the container inner surface, and the other plane area adheres to the container outer surface. The protective covering layer is made from a single foil piece which is applied to the container wall comprising the opening and thereafter shaped into its form. At least one of the plane areas is thus formed and adhered to the container wall.
Claims14
Process for covering a cut edge of an opening of a wall of a container with a protective covering layer, the wall being provided with an inner layer on the planar inner surface thereof to provide protection of contents of the container and of the wall, comprising the steps of
- providing the protective covering layer in the form of a one-piece foil having physical characteristics similar or identical to the inner layer,
- selectively feeding the one-piece foil to the wall from above or below the opening whereby the foil has the capability of being applied from above or below the opening, and
- deforming the one-piece foil such that it has a tube-shape covering the cut edge of the opening, a first plane area adhered to an outer surface of the wall and present only in an immediate region adjoining the cut edge and a second plane area adhered to the inner layer, at least one of the plane areas being formed and adhered to the wall.
Dependencies are inferred from the claim text.