Daio Paper Corporation

Syunsuke Sakai

Arika Tsunoda

A member that exhibits a complicated appearance without monotonous contraction wrinkles and has excellent appeal to consumers when the member is applied to an absorbent article. A third joined portion row is formed between a first joined portion row Aand a second joined portion row adjacent to each other, and an interval of at least a part of the third joined portion row in the alignment direction is longer than an interval Sof the first joined portion row and the interval of the second joined portion row in the alignment direction.

Elastic member and disposable wearing article including elastic member

To prevent or suppress the occurrence of tearing of an elastic film between stretchable regions in an elastic sheet stretchable structure. An elastic sheet stretchable structure is provided, in which an elastic film is laminated between a first sheet layer having air permeability and a second sheet layer having air permeability, and the first sheet layer and the second sheet layer are bonded at a large number of sheet bonded portions arranged at intervals. At the boundary between a first stretchable region and a second stretchable region, a separation distance Px in an elastic limit elongation state between a bonded portion located on a side of the boundary of the first stretchable region in a stretchable direction and a bonded portion located on a side of the boundary of the second stretchable region in a stretchable direction is 10 mm or less.

Stretchable member and disposable wear article using stretchable member

Ultrasonic welding is performed by passing a first sheet layer, a second sheet layer, and an elastic film interposed therebetween in a stretched state in a machine direction between an anvil roll having a large number of protrusions and an ultrasonic horn. The anvil roll includes a region having the protrusions and in the region. A site, in which welding is performed by one ultrasonic horn, has a portion in which an area rate of the protrusions changes in a roll circumferential direction and a roll length direction. A difference between a maximum value and a minimum value in a change of the area rate of the protrusions in the roll circumferential direction is 4.5% or less, and a difference between a maximum value and a minimum value in a change of the area rate of the protrusions in the roll length direction is 1.5% or less.

Method for forming elastic film stretchable structure and absorbent article

In order to prevent degradation of appearance, prevent a decrease in flexibility, and improve non-elasticity in a non-stretchable region in an elastic film stretchable structure, the invention is characterized by having an elastic film stretchable structure (X) formed by stacking an elastic film () between a first sheet layer (A) and a second sheet layer (B), wherein a region having the elastic film stretchable structure (X) includes a non-stretchable region () and a stretchable region () provided at least at one side of the non-stretchable region () in a stretching and contracting direction, the stretchable region () being stretchable in the stretching and contracting direction, the first sheet layer (A) and the second sheet layer (B) are joined via through holes () penetrating the elastic film () at the large number of sheet bond portions () arranged at intervals, and the non-stretchable region () does not have a section in which the elastic film () linearly continues along the stretching and contracting direction, due to presence of the through holes (), even though the elastic film () continues in the stretching and contracting direction.

Absorbent article and method for manufacturing same

An elastic member which has low stretching stress in a stretchable direction in a stretchable structure of an elastic sheet and is excellent in a feeling of wearing in the case of being applied to an absorbent article. An elastic sheet stretchable structure is provide in which an elastic film is stacked between a first sheet layer having air permeability and a second sheet layer having air permeability, and the first sheet layer and the second sheet layer are bonded through joint holes penetrating the elastic film at a plurality of sheet joined portions arranged at intervals. The joined portions have first joined portions and second joined portions, a plurality of rows of the first joined portions is formed at intervals in a stretchable direction, and rows of the second joined portions having a short length are formed between the rows of the first joined portions.

An elastic sheet stretchable structure in which a first sheet layer and a second sheet layer are bonded through joint holes penetrating an elastic film at a plurality of sheet joined portions arranged at intervals is included. Joined portion groups in the stretchable region are in a relationship of intersecting a stretchable direction line at respective positions in an orthogonal direction or in a relationship of not intersecting the stretchable direction line at a separation width of 0.5 mm or less in the orthogonal direction of the stretchable direction line. The joined portion groups are in a relationship of not intersecting an oblique line at a predetermined separation width in the orthogonal direction in an oblique line group of oblique lines q in the orthogonal direction intersecting the stretchable direction line within an angle range &#x3b3; of 45 degrees or less.

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Tochigi, Japan

Syunsuke Sakai