Patent classifications
A61F13/5123
LAMINATES FOR ABSORBENT ARTICLES AND METHODS OF MAKING THE SAME
Three-dimensional laminates and methods for making the same are provided. The three-dimensional laminates may be apertured and may have welds between various substrates. The three-dimensional laminates may be used in absorbent articles, such as diapers and pants, for example, as topsheets, as topsheets and acquisition layers, or as outer cover materials, for example. The three-dimensional laminates may be produced on an absorbent article manufacturing line.
Patterned Apertured Webs
A patterned apertured web is disclosed. The patterned apertured web includes a plurality of land areas in the patterned apertured web and a plurality of apertures defined in the patterned apertured web. At least some land areas of the plurality of land areas surround at least some apertures of the plurality of apertures. The patterned apertured web has an Effective Open Area in the range of about 3% to about 30%, according to the Aperture Test herein. The patterned apertured web has a plurality of Interaperture Distances, according to the Aperture Test herein. The Interaperture Distances have a distribution having a median and a mean, wherein the mean is different than the median. The plurality of apertures include a first set of apertures defining a first shape and a second set of apertures defining a second shape. The first shape is positioned within the second shape.
Apertured Nonwoven
An apertured nonwovens having a first nonwoven layer is described. The first nonwoven layer includes cellulose-based fibers and a plurality of apertures, wherein the plurality apertures have a minimum aperture distance between two adjacent apertures which has a relative standard deviation no greater than about 40%, as measured according to the Aperture Quality Test. The apertures have an aperture size no greater than about 2.2 mm.sup.2 and have an occlusion no greater than about 9%, as measured according to the Aperture Quality Test, or the apertures have an aspect ratio no greater than about 2.5 as measured according to the Aspect Ratio Test.
Apertured webs and methods for making the same
A patterned apertured web includes a plurality of land areas in the patterned apertured web and a plurality of apertures defined in the patterned apertured web. At least some of the land areas surround at least some of the apertures. The patterned apertured web has an Effective Open Area in the range of about 5% to about 50%, according to the Aperture Test. The patterned apertured web has a plurality of Interaperture Distances, according to the Aperture Test. The Interaperture Distances have a distribution having a median and a mean. The mean is greater than the median.
Absorbent article for securely absorbing body fluid
A plurality of openings (11) is formed in a region corresponding to at least a body fluid discharge region (H) of a liquid permeable top sheet (3). A polymer sheet (6) disposed adjacent to a surface of an absorbent body (4) side of the liquid permeable top sheet (3) is included, and the polymer sheet includes highly absorbent resin disposed along a longitudinal direction on both sides of the region corresponding to the body fluid discharge region (H). Upon the highly absorbent resin becoming swollen by absorption, a space (10) for holding a body fluid is formed between regions in which the highly absorbent resin is disposed (12) and also between the liquid permeable top sheet (3) and the polymer sheet (6).
THREE-DIMENSIONAL SUBSTRATES
A liquid permeable substrate for an absorbent article is disclosed. The substrate includes a first layer including a hydrophobic material and a second layer including a hydrophilic material. The first layer is joined to the second layer. The substrate includes a plurality of recesses, a plurality of projections, and a plurality of land areas. The land areas surround at least a majority of the plurality of projections and a plurality of the recesses. The plurality of recesses, the plurality of projections, and the plurality of land areas together form a first three-dimensional surface on a first side of the substrate and a second three-dimensional surface on a second side of the substrate. The substrate has an overall z-directional height in the range of about 1000 μm to about 6000 μm according to the Overall Substrate Height Test.
Nonwoven webs with hydrophobic and hydrophilic layers
A nonwoven web for use in an absorbent article is described. The nonwoven web has first and second nonwoven layers. The first nonwoven layer has a first plurality of fibers, an additive disposed, at least in part, on a portion of the first plurality of fibers, a first side and an opposing second side, wherein second side has a plurality of discontinuities. The second nonwoven layer has a second plurality of fibers, a first surface and an opposing second surface, and a plurality of tufts extending through at least a portion of the discontinuities in the first nonwoven layer, wherein the second nonwoven layer is attached to the first nonwoven layer such that at least a portion of the second plurality of fibers are in liquid communication with the first nonwoven layer, wherein the first nonwoven layer is hydrophobic and the second nonwoven layer is hydrophilic.
Multilayer material and absorbent sanitary article comprising the same
The invention describes a multilayer material comprising at least one first layer made of polymeric material having an upper face and a second layer made of closed cell foamed polymeric material having a lower face. The multilayer material comprises through holes which cross both the layers and occupy a surface of between 1 and 40% of the total surface of the upper face of said multilayer material. The multilayer material is advantageously used in an absorbent sanitary article in which the upper face of the first layer is positioned externally so that in use it is in contact with the user's skin and the lower face of the second layer is positioned towards the inside of the sanitary article in contact with other layers of polymeric material.
Apertured webs and methods for making the same
Patterned apertured webs are provided. The patterned apertured webs include a plurality of land areas and a plurality of apertures defined in the patterned apertured webs. At least some land areas of the plurality of land areas surround at least some apertures of the plurality of apertures. The patterned apertured webs have an Effective Open Area in the range of about 3% to about 30%, according to the Aperture Test.
Methods of making laminates for absorbent articles
Three-dimensional laminates and methods for making the same are provided. The three-dimensional laminates may be apertured and may have welds between various substrates. The three-dimensional laminates may be used in absorbent articles, such as diapers and pants, for example, as topsheets, as topsheets and acquisition layers, or as outer cover materials, for example. The three-dimensional laminates may be produced on an absorbent article manufacturing line.