US 2020/0346261 A1 · METHOD AND SYSTEM FOR RECOVERING PULP FIBERS FROM USED ABSORBENT ARTICLES

Abstract

Provided is a method that, when pulp fibers are recovered from used absorbent articles that have been put into collection bags, makes it possible to safely and sanitarily crush the used absorbent articles while suppressing costs. A method for recovering pulp fibers from used absorbent articles, the method comprising: a crushing step (S12) in which collection bags (A) in which used absorbent articles have been sealed are put into a container (65), the collection bags in the container are transferred to a crushing device (12) that communicates with the container, and, bag by bag, the crushing device crushes the used absorbent articles in the collections bags in a deactivating aqueous solution; and a separation step (S13) in which the pulp fibers, a highly water-absorbent polymer, and the deactivating aqueous solution are separated from the crushed product and deactivating aqueous solution obtained in the crushing step.

Claims24

Dependent claims

A method of recovering pulp fibers from a used absorbent article which includes pulp fibers and superabsorbent polymers, the method comprising:

a reception process of putting a collection bag enclosing the used absorbent article into a container;
a crushing process of, while transferring the collection bag inside the container to a crushing device which is connected to the container, crushing the used absorbent article inside the collection bag together with the collection bag within an inactivation aqueous solution by the crushing device;
and
a separation process of separating the pulp fibers, superabsorbent polymers, and the inactivation aqueous solution by a separation device from crushed matter and the inactivation aqueous solution which are obtained by the crushing process.

1 more element

A system that is used for a method of recovering pulp fibers from a used absorbent article which includes pulp fibers and superabsorbent polymers, the system comprising:

a container so as to put in a collection bag enclosing the used absorbent article;
a crushing device which is connected to the container and crushes, while transferring the collection bag inside the container, the used absorbent article inside the collection bag together with the collection bag within an inactivation aqueous solution;
and
a separation device which separates the pulp fibers, superabsorbent polymers, and the inactivation aqueous solution from crushed matter and the inactivation aqueous solution which are obtained by the crushing device.

1 more element

Dependencies are inferred from the claim text.

Method and system for recovering pulp fibers from used absorbent articles

Life of this patent

Method and system for recovering pulp fibers from used absorbent articles

Life of this patent

Abstract

Claims24