A61F13/4902

ELASTIC DIAPER ELEMENT
20220347020 · 2022-11-03 · ·

An elastic diaper element is provided that includes an elastic layer (1) and at least one layer (2) made of a non-woven. The elastic element has connecting regions (5) between the elastic layer (1) and the non-woven layer (2). The connecting regions (5) extend in a preferred direction. The non-woven layer (2) is corrugated when the diaper element is in the unstretched condition in order to provide regions (6) as a reserve allowing stretching. The connecting regions (5) have interruptions (10) along their extent.

Methods of making laminates for absorbent articles

A method of making a laminate for an absorbent article is provided. The laminate comprises elastic elements disposed at least partially intermediate two substrates. The first substrate has a primary fiber bond pattern formed therein and comprising a plurality of primary fiber bonds. The method comprises forming densified regions in the first substrate. A perimeter of each of the densified regions is larger than a perimeter of each of the primary fiber bonds. The densified regions together form a pattern of densified regions in the first substrate. The method comprises adhesively attaching the elastic elements to the first substrate, joining the second substrate to the first substrate or to some of the elastic elements, and forming a plurality of rugosities in the first substrate by allowing the elastic elements to at least partially contract. The frequency and amplitude ranges of the rugosities result from the pattern of the densified regions.

Method for producing absorbent article having stretchable region with high peeling strength
11607352 · 2023-03-21 · ·

A method for producing an underpants-type disposable diaper including a stretchable region stretchable at least in one direction in an outer body. The stretchable region is formed by stacking an elastic film between a first sheet layer composed of a nonwoven fabric and a second sheet layer composed of a nonwoven fabric. When the elastic film is stretched in the stretching and contracting direction, the first sheet layer and the second sheet layer are joined via through holes formed in the elastic film at a large number of sheet bond portions arranged at intervals in each of a stretching and contracting direction and a direction orthogonal thereto, and in the sheet bond portions, the first sheet layer and the second sheet layer (20B) are joined at least by a melted and solidified material of the elastic film among the first sheet layer and the second sheet layer.

Methods and apparatuses for making elastomeric laminates

The present disclosure relates to methods for making elastomeric laminates that may be used as components of absorbent articles. Aspects of the methods for assembling elastomeric laminates may utilize elastic strands supplied from beams that may be joined with first and second substrates, and may be configured to carry out various types of operations, such as bonding and splicing operations.

Adult incontinent device

A wing for an adult incontinent device is disclosed. The adult incontinent device has a chassis with a lateral attachment surface. The wing includes a stretch laminate with at least one nonwoven layer and at least one elastic layer. The nonwoven layer and the elastic layer are bound together in face-to-face contact. The stretch laminate has at least one stretch zone and at least one non-stretch zone. The stretch laminate has no overlap portions between the stretch zone and the non-stretch zone. One end of the wing is affixed to the lateral attachment surface of the chassis.

Elastic film and method for producing an elastic layer material
11479012 · 2022-10-25 · ·

An elastic film has a perforation formed by perforation holes that are elongated along a preferred expanding direction in the unexpanded state, wherein the ratio of the length of the perforation holes determined along the preferred expanding direction to a width of the perforation holes determined perpendicular thereto amounts to at least 3:2. The elongation at break along the preferred expanding direction is at least twice as high as the elongation at break determined perpendicular thereto along the width of the perforation holes.

Absorbent article

An absorbent article having a front panel, a rear panel, an intermediate panel joining the front and the rear panels and optionally one or more fitting components is provided. At least one of the panels and/or the fitting components is elastically contractible and made of an elastic nonwoven material that is pre-stretched and has both non-elastic and elastic polymeric material components in the form of fibers. The nonwoven material is bonded by individual bonding points arranged in a pattern. The pattern has rows of individual bonding points extending in a machine-direction and a cross-direction of the nonwoven material, and each has a centre point. The centre point of each bonding point in a row of bonding points extending in the cross-direction and/or machine-direction is offset from a centre point of each bonding point in a neighbouring row of bonding points extending in the cross-direction and/or in the machine-direction, respectively.

Shaped nonwoven

A nonwoven fabric. The nonwoven fabric can include a first surface and a second surface and a visually discernible pattern of three-dimensional features on one of the first or second surface. Each of the three-dimensional features can define a microzone comprising a first region and a second region. The first and second regions can have a difference in values for an intensive property. The nonwoven further has a plurality of apertures, wherein at least a portion of the aperture abuts at least one of the first region and the second region of the microzone.

Absorbent article with extensible ears

An absorbent article has a liquid pervious topsheet, a liquid impervious backsheet, an absorbent core disposed between the topsheet and backsheet; first and second opposing longitudinal side edges, a front waist region and a back waist region; and a first and second back ear extending outwardly from the first and longitudinal side edges in the back waist region, respectively. The first and second back ears have an engineering strain greater than about 8% at about or below 2N of force when measured according to the Back Ear Extension Test, and a roughness Ra lower than about 300 μm when measured according to the Roughness Test.

Elastic laminates with curved elastics and methods for manufacturing

Elasticated materials and articles comprising elasticated materials are disclosed. In an embodiment, an elasticated material may comprise a first layer, second layer, an elastomeric strand disposed between the first and second layers, and a plurality of bonds bonding the first and second layers together. The strand may have straight and arcuate portions. The bonds may comprise a first and a second bond and may be disposed on opposite sides of the strand and separated a distance less than an un-tensioned diameter of the strand. The first and second bonds may be disposed along a strand straight portion. The plurality of bonds may further comprise a third and fourth bond which are longitudinally adjacent and disposed on opposite sides of the strand and spaced apart a distance greater than the un-tensioned diameter of the strand. The third and fourth bonds may be disposed along a strand arcuate portion.