Back to results
US 12,433,798 B2Granted
Elastic nappy element
AssigneeRkw SE
InventorsChristoph Willing, Paul Waller, Michael Scherer
Life of this patent
Estimating the term…
Abstract
An elastic nappy element that includes an elastic layer (1) and outer layers (2, 3) made of a non-woven fabric. The nappy element has connecting regions (4, 8) for connecting the outer layers (2, 3) to the elastic layer (1). These connecting regions (4, 8) include zones (7, 9) in which a form-fitting bond of non-woven material and solidified material of the elastic layer (1) is formed.
Claims16
An elastic diaper element, comprising:
- an elastic layer (1);
- outer layers (2, 3) of nonwoven;
- and
- connecting regions (4, 8) that connect the outer layers (2, 3) to the elastic layer (1), the connecting regions (4, 8) comprise zones (7, 9) that include a form-fitting composite of nonwoven material of the outer layers (2, 3) and solidified material of the elastic layer (1) that is located only at regions of boundaries (5) between the outer layers (2, 3) and the elastic layer (1) and the solidified material that forms the connecting regions does not extend through the elastic layer (1);
- wherein the connecting regions (4, 8) are less than 90% of an overall surface and more than 20% of the overall surface.
2 more elements
A method for producing a laminate for elastic diaper elements, comprising the following steps:
- extruding an elastic film layer (1) between two layers of nonwoven (2, 3),
- connecting the layers (1, 2, 3) via connecting regions (4, 8) to form a laminate between rollers, wherein at least one of the rollers has elevations, and
- the connecting regions (4, 8) comprise zones (7, 9) that include a form-fitting composite of the two layers of nonwoven (2, 3) and solidified material of the elastic film layer (1) that is located only at regions of boundaries (5) between the outer layers (2, 3) and the elastic layer (1) and the solidified material that forms the connecting regions does not extend through the elastic layer (1), wherein the connecting regions (4, 8) are less than 90% of an overall surface and more than 20% of the overall surface.
Dependencies are inferred from the claim text.