Kao Corporation

Manabu Kaneta

Wataru Saka

Takanobu Miyamoto

Yasuhiro Komori

Yoshihiro Sakai

Shoichi Taneichi

Takashi Kawai

Manabu Matsui

Jun Sasaki

Yutaka Saito

Koji Asano

Akemi Yuji

A bulky sheet () has a first side (), a second side () opposite to the first side (), a plurality of macroscopic first recessed ridges () and a projection () on at least the first side (). The first recessed ridges () extend straight in a first direction at a predetermined interval. The projection () is located between the first recessed ridges () adjacent to each other. The projection () projects from the second side () toward the first side () of the bulky sheet ().

Bulky sheet and method for producing same

A bulky sheet material having three-dimensional protrusionsis disclosed. The sheet material comprises a first layerand a second layeradjacent to the first layer. The first layerand the second layeris partly joined together at jointsin a prescribed pattern. The first layerhas a number of raised portions which are located among the joints. The second layercomprises a material which exhibits elastomeric behavior. The bulky sheet materialexhibits elastomeric behavior as a whole and breathability.

Bulky sheet material having three-dimensional protrusions

A method for restoring bulkiness of nonwoven fabric which contains crimped thermoplastic fiber and is in a roll form is disclosed. The method comprises unwinding the nonwoven fabric from the stock roll, and blowing hot air to the unwound nonwoven fabric by a through-air technique to make the nonwoven fabric increase in bulkiness. The hot air is heated at a temperature lower than the melting point of the thermoplastic fiber and not lower than a temperature lower than that melting point by about 50&#xb0; C., and is blown for about 0.05 to 3 seconds.

Method for restoring bulkiness of nonwoven fabric

The fastener of the present invention comprises a male material, having many hooks, of a mechanical fastener and a female material, made of nonwoven fabric, of the mechanical fastener, the male material engaging said female material, wherein many hooks ( ) in the male material ( ) have a density of 100 to 1000 pieces/cm , a height of 300 to 1500 &mgr;m and a width of 100 to 500 &mgr;m, and the nonwoven fabric composing the female material has a basis weight of 20 to 80 g/m and a fineness, of 4 to 15 deniers, of a composite fiber thereof. The fastener of is used, for example, in a disposable diaper of absorbent articles.

Fastener and absorbing article using it

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Tochigi, Japan

Manabu Kaneta