Foil- or film-like bandage and process for using the same

• US 4,619,253 A
• Filed: 12/06/1984
• Issued: 10/28/1986
• Est. Priority Date: 12/08/1983
• Status: Expired due to Term

• Current Assignee: Lohmann GmbH & Company KG
• Original Assignee: Lohmann GmbH & Company KG
• Inventors: Anhauser, Dieter, Reinhold, Karl-Heinz, Kreitlow, Gerhard, Olbrich, Hubertus, Schmitt, Anita
• Primary Examiner(s): Cockeram, Herbert S.
• Application Number:
  US06/678,782
• Time in Patent Office: 691 Days
• Field of Search: 128/156
• US Class Current: 602/42
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: A61F 2013/00829 rigid or semi-rigid backing
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]

Abstract

The invention is related to a foil- or film-like bandage consisting of a transparent continuous bandage foil which on the one side is covered with a transparent supporting foil and on the other side is provided with an adhesive layer and a removable cover layer thereupon, the supporting foil extending over said transparent continuous bandage foil at opposite edges and the cover layer having the same size as the adhesive layer, said cover layer having particularly formed preset cuts or preset breaking lines between two points at different edges, preferably opposite edges such that the cover layer is partitioned into two parts and, upon bending of the foil- or film-like bandage, there is produced an auxiliary pull-off means in the cover layer for the same.

Claims

1. A foil- or film-like bandage consisting of a transparent continuous foil or film having a thickness of 10 to 120 μ

m covered on one side by a transparent supporting foil bonded thereto and on its other side by an adhesive layer which itself is covered by a removable cover layer, said supporting foil extending beyond the edges of the foil or film layer at two opposite edges thereof, thereby forming two grasp strips, said removable cover layer being the same size as the adhesive layer and having a precut or breaking line partitioning said cover layer into two partial areas thereby forming at least one peelable grasp part for each partial area, whereby bending the bandage to a convex curvature of the grasp part area produces peel-off of said grasp parts.

2. Foil- or film-like bandage according to claim 1 wherein a zone of enlarging the stiffness of said cover layer is provided in the cover layer in the surrounding of the precut or preset breaking line to ease the peel-off of said grasp parts from the cover layer when bending the foil- film-like bandage.

3. Foil- or film-like bandage according to claim 1 which is non-occlusive.

4. Foil- or film-like bandage according to claim 1 which is occlusive.

5. Foil- or film-like bandage according to claim 1 wherein the transparent continuous bandage foil has a thickness of 15 to 50 μ

m.

6. Foil- or film-like bandage according to claim 1 wherein the transparent continuous bandage foil consists of polyurethane.

7. Foil- or film-like bandage according to claim 1 wherein the transparent continuous bandage foil has a watervapour permeability of at least 300 g×

m^-2 ×

24 h^-1.

8. Foil- or film-like bandage according to claim 1 wherein the bandage is constructed in such a way that the force necessary to remove the supporting foil from said transparent continuous bandage foil is smaller then the force necessary to remove the transparent continuous bandage foil from the body.

9. Foil- or film-like bandage according to claim 1 wherein the bandage is constructed in such a way that the force necessary to remove the cover layer is smaller than the force necessary to remove the supporting foil from the transparent continuous bandage foil.

10. Process for the application of a foil- or film-like bandage according to claim 1 wherein

the foil- or film-like bandage is bent to form a concave curvature of the open surface of the supporting foil thereby producing forces which peel off the at least one grasp part per partial area of the cover layer, said partial areas of said cover layer being produced by a preset cut or a preset breaking line,

said partial areas of said cover layer are removed by means of said grasp parts,

said foil- or film-like bandage with its open adhesive layer are grasped at the lateral grasp parts in the supporting foil extending over two opposite edges of the transparent continuous bandage foil,

the foil- or film-like bandage is fixed with its adhesive layer to the substrate to be covered by the transparent continuous bandage foil and

the supporting foil is pulled off from the transparent continuous bandage foil by means of one of said grasp strips formed by the parts of the supporting foil extending over the opposite edges of the transparent continuous bandage foil.

11. Process according to claim 1 wherein the substrate is a human or animal body.