Daio Paper Corporation

Diao Paper Corporation

Tomonari Takeuchi

Satoko Konawa

Tomotsugu Matsui

Yuki Horie

Sayaka Kozai

Keisuke Ebitsuka

An elastic film stretchable structure in which an elastic film is stacked between a first sheet layer having air permeability and a second sheet layer having air permeability, the first sheet layer and the second sheet layer are bonded through bonding holes penetrating the elastic film at a number of sheet bonded portions arranged at intervals. A region having the elastic film stretchable structure has a stretchable region that is stretchable in a stretchable direction, and the stretchable region is contracted in the stretchable direction by a contraction force of the elastic film and is extensible in the stretchable direction, and vent holes are formed on the elastic film at sites where the elastic film does not overlap with the sheet bonded portions.

Disposable wearing article with improved air permeability and manufacturing method therefor

A stretchable elastic film is interposed in a stretched state between a first sheet layer having no elasticity and a second sheet layer having no elasticity. Heat melt energy is applied to a region of a large number of bonded portions spaced apart from each other by a heat melting apparatus from the outside of the first sheet layer and the second sheet layer to melt the elastic film. The first sheet layer and the second sheet layer are bonded directly or via an elastic film at the large number of bonded portions. The elastic film is caused to pass through the counter roll and the nip roll to pass along the counter roll and then pass along the anvil roll. The elastic film is stretched by making the circumferential speed of the anvil roll faster than the circumferential speed of the counter roll.

Method for manufacturing stretchable sheet

An absorbent article includes a stretchable sheet that is a laminate of a non-stretchable first sheet layer, a non-stretchable second sheet layer, and an elastic film disposed between the first and second sheet layers, and the elastic film is stretchable at least in the front-back direction. The first sheet layer is bonded to the second sheet layer at a large number of joints directly or through the elastic film and the joints are arrayed at intervals. The stretchable sheet is contracted by a contraction force of the elastic film and can be stretched by an external force applied in the front-back direction. The leg portion is also contracted by a contraction force of the elastic film and can be stretched by an external force applied in the width direction. The leg portions and adjoined regions have different joint area rates and thereby have different stretching stresses.

Disposable diaper

To acquire a stretchable sheet having air permeability due to the presence of through-holes, with no hole formed through outer layers. There are provided: interposing a resilient film () that stretches and contracts, in a stretched state between a first sheet layer () having no elasticity and a second sheet layer () having no elasticity; and joining the first sheet layer () and the second sheet layer () together with a number of joints directly or through the resilient film by melting the resilient film () with ultrasonic fusion energy applied by a thermal fusion device from the outside of the first sheet layer () and the outside of the second sheet layer () to a number of joint regions with intervals, during the interposing. The resilient film () is supplied around a counter roll () so as to be supplied around the anvil roll (), and the anvil roll () is accelerated to be faster than the counter roll () in peripheral speed to stretch the resilient film ().

Method of manufacturing stretchable sheet

To provide a body fluid absorbent article having a face sheet, a body fluid permeable memberincluding an assembly of fibers in tows, a body fluid retainable absorbent element AB in this order, and a face-side second sheet, which is interposed between the above face sheetand the above body fluid permeable memberwith such a positional relation that the above face-side second sheetis at least partly superposed on the above body fluid permeable member; and embossing is carried out integrally on the above face sheetand the above face-side second sheetwhile embossing is not carried out on the above body fluid permeable member

Sanitary napkin with a tow fiber assembly

[Problems] To provide a disposable absorbent article that can generate a large temperature change on a surface thereof. [Means for Solving Problems] A disposable absorbent article comprising, at an area including a crotch portion, an absorbent portion which has a liquid pervious face sheet (), a liquid impervious sheet () and an absorbent structure () that is interposed therebetween is configured that on a surface of an absorbent body () having a high absorbent polymer at least in a face side layer thereof, a temperature changing substance () for cooling or heating urine by contact with the urine is sprinkled and that the urine, which has been cooled or heated by the temperature changing substance (), can be absorbed and retained in the face side layer of the absorbent body ().

Disposable absorbent article with temperature changing layer

[Subject] To obtain a body fluid absorbent article with the perfect protection against the body fluid leakage. [Means for Solving Problem] In the body fluid absorbent, the body fluid retainable absorbent memberA is disposed under the face sheet. Then, the body fluid permeable absorbent member, which include the assembly of fibers in tows, is disposed between the face sheetand the body fluid retainable absorbent memberA.

Growing community of inventors

Tochigi, Japan

Tomonari Takeuchi