Kao Corporation

Kazutoshi Ootsuka

Hideo Kobayashi

Minoru Wada

Satoshi Ueno

Keima Takabayashi

Ryuji Matsunaga

Kenji Ishikawa

Ryunosuke Matsumoto

Shogo Oku

Satoru Sugai

The present invention relates to a warming tool () in which a heat generating element () is held between a topsheet () that faces a heating target and a backsheet () that is located on a side away from the heating target, and a method for manufacturing the same. The heat generating element () has a first sheet () arranged opposing the topsheet (), a second sheet () arranged opposing the backsheet (), and a heat generating portion () sandwiched between the first sheet () and the second sheet (). In the warming tool (), a perfume () and an adhesive () are arranged between the second sheet () and the backsheet (), and a region in which the adhesive () is arranged and a region in which the perfume () is not arranged overlap each other in a plan view. In the manufacturing method, the perfume is added to a surface of the second sheet () that is planned to oppose the backsheet (), or to a surface of the backsheet () that is planned to oppose the heat generating element (), and the heat generating element () is held such that the backsheet () and the second sheet () oppose each other.

Heating tool and method for manufacturing heating tool

A heat generating device including a heat generating element and an enclosing material entirely enclosing the heat generating element. The heat generating element includes a base sheet formed of a fibrous sheet containing superabsorbent polymer particles and hydrophilic fibers and a layer of a heat generative composition containing oxidizable metal particles on a side of the base sheet. The enclosing material includes a first cover sheet and a second cover sheet bonded together in their peripheral portions to provide a space therebetween in which the heat generating member is placed. The heat generating element in the space is in a non-fixed state to the enclosing material. The first cover sheet has air permeability in part and is disposed on the side of the layer of the heat generative composition. The heat generating device is capable of releasing steam from the side of the first cover sheet during use.

Heat generating device

A laminate () is prepared by superposing a fibrous web (), () containing fibers comprising polyethylene terephthalate on one side or both sides of a net-form sheet (); water needling the fibrous web (), () to entangle the fibers of the fibrous web (), () with each other, and also to entangle the fibers of the fibrous web (), () with the net-form sheet (); and then, blowing hot air having a temperature above the glass transition temperature (Tg (&#xb0; C.)) of the polyethylene terephthalate and below 'Tg (&#xb0; C.)+70&#xb0; C.' to the laminate () by through-air technique. Preferably, after preparing the laminate () by entangling the fibers of the fibrous web(s) (), () with the net-form sheet (), the laminate () is dried with hot air; and then hot air is blown to the laminate () by through-air technique.

Process for producing cleaning sheet

Growing community of inventors

Tochigi, Japan

Kazutoshi Ootsuka