Used paper diaper processing method and used paper diaper...

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste

Reexamination Certificate

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Details

C162S005000, C210S768000, C210S770000, C210S774000, C210S806000, C241S015000, C241S020000

Reexamination Certificate

active

10483229

ABSTRACT:
The present invention provides a used paper diaper processing method comprising: a swell suppressing step for immersing a used paper diaper in a swell suppressant solution to suppress the swelling of the polymer with high water absorbability; a breakup step for breaking up the paper diaper subsequent to the swell suppressing step while stirring the same immersed in a processing liquid, into a cover material breakup substance and an absorbing material breakup substance; a cover material breakup substance removing step for removing the cover material breakup substance; a filtering step for filtering the processing liquid containing the absorbing material breakup substance and excreta to separate and remove the absorbing material breakup substance; and a liquid discharging step for discharging the processing liquid containing excreta into a sewage treatment facility; and an absorbing material breakup substance recovering step for recovering the absorbing material breakup substance separated and removed by the filtering step.

REFERENCES:
patent: 5292075 (1994-03-01), Bartlett
patent: 5322225 (1994-06-01), Cina
patent: 5618003 (1997-04-01), Akiyoshi et al.
patent: 2000-84533 (2000-03-01), None
patent: 2000-246011 (2000-09-01), None
patent: 2001-47023 (2001-02-01), None
patent: 2001-104929 (2001-04-01), None
patent: 94/20668 (1994-09-01), None

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