Unicharm Corporation

Takeshi Kudo

Migaku Suzuki

Mitsuzo Ochi

Satoshi Nozaki

Kazuaki Ohnishi

Takamitsu Igaue

Hironori Nomura

Shigeo Imai

Rumi Yamaki

Ritsuko Sakai

A diaper structure is formed with a leakage preventing arrangement, in the form of a flexible flap located outwardly with respect to a diaper absorbent core. The flap is formed with a support portion extending upwardly from the diaper surface to support an inwardly extending inner branched portion and an outwardly extending outer branched portion extending the length of the support portion. Both the inner and outer branched portions are fixed to the diaper body at longitudinal ends thereof in longitudinally stretched condition so that a pocket is jointly formed by a portion of a topsheet covering a side edge of the core, the support portion and the inner branched portion. The pocket is maintained in an open position independently of a wearer's posture to impede the leakage of excretions from the diaper.

Disposable diaper

A disposable absorbent article having a topsheet, a backsheet, an absorbent core, first flaps and second flaps. Each of second flaps is connected to the first flap and has a section branching upward and a section extending outward. The branching section is partially elastic. The extending section is so constructed as to be liquid-absorbent on its top surface.

Disposable absorbent articles

A disposable garment of pants type, such as a disposable diaper of pants type, is constructed by attaching respective leg-hole surrounding flaps and waist-hole surrounding flaps to respective opposite side edges extending longitudinally of a basic assembly for the garment which comprises at least a topsheet and a backsheet. The leg-hole surrounding flaps and the waist-hole surrounding flaps respectively cooperate to form a pair of leg-holes. A pair of shoulder straps can be easily prepared by making a slit which extends longitudinally of the garment on each waist-hole surrounding flap. A disposable garment of the present invention is featured in its simple construction and easy production.

Disposable garments of pants type

A disposable diaper includes a liquid-permeable topsheet, a liquid-barrier backsheet, and a liquid-absorptive core sandwiched between these two sheets. Side flaps extend from the two side edges of the core, and have elastic parts which are longitudinally stretchable. Side wings protrude from the two sides of the front and rear waist portions. Each side wing comprises a composite of a sweat-absorptive, air-permeable layer, and a liquid-barrier, air-permeable layer.

This disclosure is directed to an apparatus adapted to cut an elastic member for fitness of opposite side edges around the user's legs into desired lengths and then to successively attach these lengths of the elastic member onto a disposable diaper.

Method for attaching elastic member in disposable diaper

Here is disclosed a disposable diaper comprising an absorbent core of a desired thickness, a water-permeable topsheet covering at least an upper surface of said core, a water-proof or a water-impervious backsheet covering at least a bottom surface of said core, water-impervious side flaps extending outwardly of opposite sides of said core, first elastic bands adapted to form elastic gathers longitudinally of the respective flaps and leakage protecting baffles formed along opposite side edges of said core and contained second elastic bands to provide elastic gathers longitudinally thereof.

Here is disclosed a method for making wearable articles such as disposable diaper, disposable diaper cover or the like, more particularly, a method for forming side flaps provided with elastic members to provide fitness around wearer's legs. According to this method, the side flaps are formed from first portions extending from opposite sides of a main body of the article and second portions, respectively, each of the second portions is provided along one side edge with said elastic member, the second portion is placed upon the first portion, and the first portion and the second portion are selectively sealed together in an area between their outer side edges and the elastic member so that the opposite sealing lines are spaced from each other wider at least in a rear area than in a central area.

Method for making wearable articles

Here is disclosed a waist band for diaper to connect the front and rear waists at each side. In contrast with the pressure-sensitive adhesive tape of prior art which necessarily forms an overlapping portion of said front and rear waists at each side of the diaper when the latter is put on the user, this waist band has not only a function to adjust a circumferential dimension of the waist but also the fastening function of the conventional adhesive tape. The waist band disclosed herein has a relatively large length including an area of low rigidity (or high flexibility) serving for said adjusting function and another area of high rigidity serving for said fastening function. Furthermore, this waist band is made of basic material consisting of nonwoven fabric having high flexibility and plastic film which is at least partially melted into said nonwoven fabric integrally therewith so that said area serving for fastening function may have a desired high rigidity.

Growing community of inventors

Kawanoe, Japan

Takeshi Kudo