Kao Corporation

Takuo Yanashima

Kenji Ando

Akio Morita

Kenji Kobayashi

Jun Sasaki

Shinji Hamamoto

Shinnosuke Morita

Makoto Kokubo

Koji Imai

Aiko Onda

Ryoichi Yamamoto

Masanori Endo

Kazuma Saitou

A pull-on diaperB of the invention includes an outer cover assemblydefining the exterior surface of the diaper. A front body portion F and a rear body portion R of the outer cover assemblyare connected to each other along their laterally opposite side edges to form a pair of side seams, a waist opening, and a pair of leg openings. Each side seamhas a sealed edge portionwhere the front body portion side edgeF and the rear body portion side edgeR of the outer cover assemblyare bonded to each other at a continuous linear fusion bond extending in the longitudinal direction of the side seam and, in part, a non-sealed portionwhere the front body portion side edgeF and the rear body portion side edgeR of the outer cover assembly face to each other in a non-bonded relationship.

Absorbent article with fusion bonded side seams

The present invention provides a method for continuously manufacturing a stretchable sheet () with a thread-shaped elastic body () fixed between a pair of belt-shaped sheets () in a stretched state, the method including a supply process of introducing the fed thread-shaped elastic body () to elastic body winding means () in a stretched state, a conveyance process of continuously winding the thread-shaped elastic body () to a thread-conveying longitudinal structure () using the elastic body winding means () and conveying the wound thread-shaped elastic body in a longitudinal direction of the structure (), and an integration process of fixing the thread-shaped elastic body () as sandwiching between the sheets (). In the supply process, the thread-shaped elastic body () is introduced to the elastic body winding means () while adjusting a speed of the thread-shaped elastic body () to be equal to or higher than a winding speed against the pair of conveying belts () with speed adjusting means (B) which is arranged at the upstream side of the elastic body winding means ().

Method for manufacturing stretchable sheet

In the present invention, one surface of a belt-shaped sheet laminate (), in which a plurality of sheets are laminated, is pressed against a support member () having a light passage section () through which a laser beam () can pass, and the belt-shaped sheet laminate () is irradiated, from the support member () side via the light passage section (), with a laser beam () to cut and fusion-bond the belt-shaped sheet laminate (), thereby sealed edge sections () are formed by fusion-bonding the edge sections of the plurality of sheets.

Method for manufacturing fused sheets

An apparatus () for producing stretchable sheet of the present invention includes a pair of conveyance belts () which is separately arranged, elastic body winding means () which winds a threadlike elastic body () around the pair of conveyance belts () and orients the threadlike elastic body () to a direction intersecting with a conveyance direction of continuous-length sheets, and integrating means which fixes the threadlike elastic body () to the continuous-length sheets. The conveyance belts () include upper belts () and lower belts (). Proceeding portions (') which convey the threadlike elastic body () at respective upper belts are inclined so that an upper side is located closer than a lower side to a center position (PC) between the conveyance belts, and proceeding portions (&#x2032;) which convey the threadlike elastic body () at respective lower belts are inclined so that a lower side is located closer than an upper side to a center position (PC).

Apparatus for manufacturing stretchable sheet

A pull-on absorbent article including a front outer cover to be worn around a wearer's front side, a rear outer cover to be worn around the wearer's rear side, and an absorbent assembly fixed to the front and the rear outer cover so as to bridge them and having a pair of side seals. The length of each of the front and the outer cover in the longitudinal direction of the article is uniform in the lateral direction and larger than that of the side seals so that the front and the outer cover have extension portions that extend downward from the side seals. The extension portions of the front and/or the rear outer cover have an elasticized region extensible in the lateral direction in a region located laterally outward of each side edge of the absorbent assembly.

Pull-on absorbent article and method of making the same

A method of producing a clothing article including the steps of (a) joining first continuous websandhaving stretchability in the longitudinal direction thereof both in a longitudinally stretched state along an edge portion thereof to a longitudinally substantially inextensible second continuous webto make a continuous composite sheet, (b) joining the composite sheetobtained in step (a) on its side to a memberof the clothing article to make a web assembly, and (c) cutting the web assemblyobtained in step (b) to length.

Method of producing clothing article

The absorbent article has an outer sheet that provides an outer surface of the absorbent article, an inner sheet disposed on the inner side of the outer sheet, and elastic members for making below-waist gathers disposed between the two sheets. A patterned sheet is disposed between the outer and inner sheets such that the pattern of the patterned sheet may be seen through the outer sheet from the outside of the diaper. The elastic members for below-waist gathers each have a portion contributory to elastic extensibility and contractibility in the regions outside the lateral sides of the patterned sheet and a portion substantially non-contributory to elastic extensibility and contractibility in the region inside the lateral sides of the patterned sheet. The latter portion of the elastic member is disposed between the patterned sheet and the inner sheet and preferably is kept out of sight from the outside.

Growing community of inventors

Utsunomiya, Japan

Takuo Yanashima