Unicharm Corporation

Yoshihide Ishikawa

Takeshi Bando

Hisaoki Nobukuni

Kazuhiko Hoshika

Ikue Hiramatsu

Daisuke Miyake

Takayoshi Konishi

Toshio Hiraoka

Noritomo Kurita

Takashi Kato

The purpose of the present disclosure is to provide a recovery method for an organic acid. The recovery method makes it possible to efficiently recover an organic acid that is included in a deactivating aqueous solution that includes excrement. This recovery method has the following features. A method for recovering an organic acid that deactivates a highly water-absorbent polymer that is included in used absorbent articles, the method being characterized by including: a deactivation step (S) in which the highly water-absorbent polymer is immersed in a deactivating aqueous solution that includes an organic acid and has a prescribed pH and the highly water-absorbent polymer is deactivated; a highly water-absorbent polymer removal step (S) in which the deactivated highly water-absorbent polymer is removed from the deactivating aqueous solution; a pH adjustment step (S) in which the deactivating aqueous solution is adjusted to a prescribed pH; a concentration step (S) in which the deactivation step (S), the highly water-absorbent polymer removal step (S), and the pH adjustment step (S) are repeated using deactivating aqueous solution that has gone through the pH adjustment step (S) and the organic acid in the deactivating aqueous solution is concentrated; and an organic acid recovery step (S) in which the organic acid is recovered from the deactivating aqueous solution.

Recovery method for organic acid, and production method for recycled pulp

To provide a more logical construction technique relating to a production method and a production apparatus for a cleaning implement. Provided are a production method and a production apparatus for a cleaning implement having a cleaning sheet and a holder, the method including: a step of supplying a plurality of strip elements; a step of superimposing the plurality of strip elements; a step of supplying the superimposed strip elements to a bonding apparatus having a drum roll and a bonding process section; and a step of forming bonded zones in predetermined zones of the superimposed strip elements by the bonding apparatus.

Production method and production apparatus for cleaning implement

A method for forming compression-bonding portions in a continuous body including a fiber bundle while conveying the continuous body includes: rotating a rotator to convey the continuous body; compressing a target part of each of the compression-bonding portions in the continuous body using a first compression-bonding apparatus and the rotator to form the compression-bonding portions of a first stage; and further compressing each of the compression-bonding portions of the first stage using a second compression-bonding apparatus and the rotator to form the compression-bonding portions of a second stage. At least one of the compression-bonding portions is positioned between the first compression-bonding apparatus and the second compression-bonding apparatus in the direction of rotation of the rotator when the second compression-bonding apparatus compresses the compression-bonding portion of the first stage.

Method and apparatus for forming compression-bonding portion to continuous body of web member with fiber bundle

A method for forming compression-bonding portions in a continuous body including a fiber bundle while conveying the continuous body includes: rotating a rotator, while holding the continuous body on an outer peripheral surface of the rotator, to convey the continuous body; compressing a target part of each of the compression-bonding portions in the continuous body using a compression-bonding member and the rotator to form the compression-bonding portions; and pressing the continuous body inwardly in a radial direction of the rotator using a pressing member, while avoiding forming the compression-bonding portions in the continuous body, the pressing member being opposed to the outer peripheral surface of the rotator, at a position upstream in the direction of rotation from the compression-bonding member.

A method of manufacturing wet wipes includes a step of continuously conveying a plurality of sheets by a conveyor, a step of folding each of the sheets toward a conveyor non-contact surface side of the sheets, a step of impregnating each of the folded sheets with the predetermined chemical solution, from a conveyor contact surface side of the sheets a step of laminating each of the sheets impregnated with the predetermined chemical solution, and a step of cutting the laminated sheets.

Method of manufacturing wet wipes, manufacturing apparatus, and wet wipes

This method for producing wet wipes includes the following steps: a step for vertically folding non-woven cloth sheets; a step for impregnating the sheets with a chemical; a step for stacking the sheets; a step for cutting the sheets at predetermined lengths; a step for pulling the cut sheets away from a transporting conveyer provided with a suction mechanism by means of a pusher, and stacking the cut sheets; a step for pressing a bundle comprising the sheets; and a step for packaging the bundle. The pusher is disposed between the transporting conveyers. The blades of the pusher have a plurality of tooth sections. The pusher drops the sheets suctioned to the transporting conveyer downwards by means of moving vertically downwards.

Method and apparatus for manufacturing wet wipes

In order to achieve both ease of removal and an increase in the rate of impregnation by a predetermined chemical, in this packaging structure of a package of wet wipes, a convex region is formed at a position containing a region that faces the opening of a main package body and that is on the upper surface of a stacked body of wet wipes. The convex region is formed protruding towards the main package body. A space is formed between the region (corresponding to the ends) aside from the convex region formed on the wet wipes and the upper surface to which the opening of the main package body is provided.

Package structure

The present invention provides a method for producing a tampon having an absorbent body that absorbs fluid and a string that is attached to the absorbent body, the method includes: attaching the string to the absorbent body; causing a regulation section to regulate movement of the absorbent body; causing a holding section to hold the string; and applying a tensile force to the string by increasing a distance in a longitudinal direction of the absorbent body between the regulation section and the holding section.

Growing community of inventors

Kagawa, Japan

Yoshihide Ishikawa