Pad with fluid barrier

• US 20120059339A1
• Filed: 03/01/2010
• Published: 03/08/2012
• Est. Priority Date: 03/03/2009
• Status: Active Grant

• Current Assignee: Padtech AS
• Original Assignee: Padtech AS
• Inventors: Gundersen, Dag H.
• Granted Patent: US 9,161,603 B2
• Time in Patent Office: Days
• US Class Current: 604/304
• CPC Class Codes: A45D 2200/1018 comprising a pad, i.e. a cushion-like mass of soft material, with or without gripping means
• CPC Class Codes: A45D 2200/1036 containing a cosmetic substance, e.g. impregnated with liquid or containing a soluble solid substance
• CPC Class Codes: A45D 34/04 Appliances specially adapted for applying liquid, e.g. using roller or ball
• CPC Class Codes: A45D 40/0087 for samples
• CPC Class Codes: A61F 13/00 Bandages or dressings radioactive dressings A61N5/1029; Absorbent pads
• CPC Class Codes: A61F 2013/00297 safety barrier for protection of the operator
• CPC Class Codes: A61F 2013/00906 for transcutaneous or transdermal drugs application
• CPC Class Codes: A61K 9/703 characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches

Abstract

The present invention relates to a device for applying at least one product in a controlled manner onto a surface. The device comprises several layers, where a bottom layer and at least a storage layer are welded together during the manufacturing of the device in order to create a temporary liquid barrier in the storage layer. The temporary liquid barrier will form at least one closed chamber in the storage layer, where the purpose of the temporary liquid barrier is to delay the liquid running over the barrier after the storage layer has been filled with the liquid that is to be applied. This delay of the liquid running over the temporary liquid barrier will ensure that the rest of the different layers of the device can be joined together inside and around their outer peripheries, in order to create a liquid tight storage chamber for the product.

Claims

1. A method for manufacturing of an applicator device containing a product, the product being a liquid or colloidal substance, characterized in that the method comprises the following steps:

creating a temporary barrier in the applicator device by welding or gluing a bottom layer and a storage layer together or creating a sunken area in the at least one of the bottom layer and/or storage layer,

arranging the bottom layer, the storage layer and a contact layer below a top layer,

welding the bottom layer, storage layer, contact layer and top layer to form a storage chamber in the device, and

welding the different layers at least partly around their outer peripheries in order to create a closed applicator device.

2. Applicator device containing a product according to claim 1, the product being a liquid or colloidal substance, which device comprises a bottom layer (4) and top layer (1), between which two layers (1, 4) at least one layer is arranged, the bottom layer (4) and top layer (1) being joined with the at least one layer in order to create at least one sealed storage chamber (8) in the device, where the scaled storage chamber (8) accommodates the product to be applied, the layers being connected around their outer peripheries, characterized in that the bottom layer (4) and the at least one layer are connected to create a temporary liquid barrier (10) inside the storage chamber (8) prior to the filling of the product, the temporary liquid barrier (10) delaying the product to run over the barrier (10).

3. Device according to claim 2, characterized in that the storage chamber (8) is a substantially impermeable barrier.

4. Device according to claim 2, characterized in that the temporary liquid barrier (10) is arranged in determined patterns on a part of or whole surface of the storage layer.

5. Device according to claim 2, characterized in that the bottom layer (4) and the top layer (1) are manufactured from a substantially impermeable material.

6. Device according to claim 2, characterized in that the bottom layer (4) is joined to an elastic pocket layer (5) in order to form a pocket in the device.

7. Device according to claim 2, characterized that the storage layer (3) consists of fiber structures in one or more planes, the fiber structures forming cavities containing the product to be applied.

8. Device according to claim 2, characterized in that the top layer (1) is welded with weakened zones to the rest of the layers (2-4).

9. Device according to claim 2, characterized in that the temporary liquid barrier also is comprised of a contact layer (2).

10. Device according to claim 2, characterized in that the bottom layer (4), a storage layer (3), a contact layer (2) and the top layer (1) are connected to form the storage chamber (8) in the device.

11. Device according to claim 2, characterized in that a weld seam (10), forming the temporary liquid barrier, is a closed circuit.

12. Device according to claim 2, characterized in that the weld seam (10), forming the temporary liquid barrier, is made by spot welding, continuous welding, broken weld or a combination thereof.

13. Device according to claim 2, characterized in that a hollow is created in the bottom layer (1) and/or storage layer (3).