Daio Paper Corporation

Shunji Seno

Yasuko Ishikawa

Kento Fujima

Yosuke Mori

Tomotsugu Matsui

Akie Moritani

Hiroki Matsuoka

Keisuke Ebiduka

An absorber, a liquid impervious sheet covering a back surface side of the absorber and having air permeability, and a cover nonwoven fabric covering a back surface side of the liquid impervious sheet are provided. The cover nonwoven fabric has a large number of holes penetrating the front surface and back surface at intervals in a region overlapping with the liquid impervious sheet. Edge portions of the holes bend-up toward a front surface side. In a region having the holes in the cover nonwoven fabric, rows of the holes, which are aligned in the front-back direction at intervals in the front-back direction narrower than the dimension in the front-back direction of each of the holes, are repeatedly formed at predetermined intervals in the width direction, and the interval of the adjacent two holes in the width direction is wider than the dimension in the front back-direction of the hole.

Absorbent article with cover nonwoven fabric having improved air permeability

An object of the present invention is to provide an elastic structure that has straightly extended ridges with excellent appearance, air permeability, and fluffy feel. The object can be attained by an elastic structure in which a first sheet material (S) and a second sheet material (H) are joined together to form sheet joined sections () by an adhesive () applied intermittently in an extending direction and continuously in a direction intersecting with the extending direction, resilient and elastic members (and) are fixed by the adhesive () to at least one of the first sheet material (S) and the second sheet material (H) at intersections with the sheet joined sections (), and when the first sheet material (S) and the second sheet material (H) are contracted with contraction of the resilient and elastic members (and), portions of the first sheet material (S) and the second sheet material (H) positioned between the sheet joined sections () are swelled in mutually opposite directions to form ridges (), and the sheet joined sections () have a width () of 0.5 to 4 mm in the extending direction and spacing () between the adjacent sheet joined sections () is 4 to 8 mm.

Elastic structure for absorbent article and method for manufacturing elastic structure for absorbent article

The present invention provides an underpants-type disposable diaper that has pleats formed in an outer body, which vertically and straightly extend, is excellent in appearance and air permeability, and is excellent in drawing preventing performance of a resilient and elastic member. The above-mentioned object is solved by a method for producing an underpants-type disposable diaper including, in forming stretchable regions, applying an adhesive to both an external surface of an inside layer and an internal surface of an outside layer in the same vertical striped pattern intermittent in an MD direction while transporting the inside layer and the outside layer, and then, fixing resilient and elastic members to the inside layer and the outside layer by bonding the inside layer and the outside layer to each other such that a position of the adhesive on the inside layer in the MD direction and a position of the adhesive on the outside layer in the MD direction are made to match with each other and sandwiching the resilient and elastic members between the inside layer and the outside layer continuously along the MD direction.

Stretchable structure with striped adhesive, method for producing, and absorbent article comprising the stretchable structure

Provided is a method for manufacturing a stretchable elastic member excellent in appearance and reduced in manufacturing cost by applying a first adhesive to an inner surface of a sheet at one side at predetermined intervals, applying a second adhesive to elongated resilient and elastic members at predetermined intervals, forming first application regions in which the first adhesive is applied and first non-application regions between the first application regions and the adjacent first application regions, forming second application regions in which the second adhesive is applied over a large number of the first application regions and second non-application regions between the second application regions and the adjacent second application regions, fixedly installing, on an inner surface of the sheet at the one side, the elongated resilient and elastic members and a sheet at the other side at the outer side of the elongated resilient and elastic members, and cutting the elongated resilient and elastic members in sections in which the first non-application regions and the second application regions oppose each other when seen from the above.

Method for manufacturing stretchable elastic member, and disposable diaper using stretchable elastic member

In an underpants-type disposable diaper including a waist edge portion in which pleats extend straight and which has excellent fit, the inner layer and the outer layer at the waist edge portion of an outer body are joined by an adhesive arranged intermittently or a welding process performed intermittently in the width direction and continuously in a direction crossing the width direction, thereby forming sheet joined sections, waist edge portion resilient and elastic members are sandwiched between the inner layer and the outer layer and fixed to at least one of the inner layer and the outer layer at positions intersecting with the sheet joined sections, and the diaper includes an area not being joined and not having resilient and elastic member at an end portion of the outer body on the waist opening side in the waist edge portion, the area not having sheet joined sections nor the waist edge portion resilient and elastic members, and a vertical range being wider than spacing between the waist edge portion resilient and elastic member positioned closest to the waist opening side, and the waist edge portion resilient and elastic member adjacent thereto.

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Ehime, Japan

Shunji Seno