Title:
リサイクルパルプ繊維の製造方法
Document Type and Number:
Japanese Patent JP6580116
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a recycled pulp fiber manufacturing method with which it is possible to easily obtain recycled pulp fibers containing less of a high water-absorption polymer without requiring any mechanical equipment such as an ozone generation apparatus. This method is for manufacturing recycled pulp fibers from used sanitary goods including pulp fibers and a high water-absorption polymer, and is characterized by comprising: an inactivation step (S1) for immersing a sanitary goods constituent material in an acid-containing aqueous solution so as to inactivate the high water-absorption polymer; a high water-absorption polymer degradation step (S3) for generating chlorine dioxide by adding a chlorine dioxide generating material, which is capable of generating chlorine dioxide through reaction with an acid, to the acid-containing aqueous solution that has undergone the inactivation step (S1), and then degrading the inactivated high water-absorption polymer using said chlorine dioxide; and a recycled pulp fiber recovery step (S4) for recovering the recycled pulp fibers from the acid-containing aqueous solution that has undergone the high water-absorption polymer degradation step (S3).
Inventors:
Takayoshi Konishi
Application Number:
JP2017244088A
Publication Date:
September 25, 2019
Filing Date:
December 20, 2017
Export Citation:
Assignee:
UNI-CHARM CO.,LTD.
International Classes:
D21C5/02; B09B3/00; C08J11/16; D21B1/32
Domestic Patent References:
| JP2017113736A | ||||
| JP2003190928A | ||||
| JP2013150976A | ||||
| JP201084031A | ||||
| JP2001316519A | ||||
| JP2013520244A | ||||
| JP200339023A | ||||
| JP201821283A |
Foreign References:
| WO2016047294A1 | ||||
| US20140230322 |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Hiroyuki Onoda
Okuno Takenori
Kenji Fujimoto
Shinji Mitsuhashi
Hiroyuki Onoda
Okuno Takenori
Kenji Fujimoto