PH12020550534A1 - Method and system for recovering pulp fibers from used absorbent articles - Google Patents

Method and system for recovering pulp fibers from used absorbent articles

Info

Publication number
PH12020550534A1
PH12020550534A1 PH12020550534A PH12020550534A PH12020550534A1 PH 12020550534 A1 PH12020550534 A1 PH 12020550534A1 PH 12020550534 A PH12020550534 A PH 12020550534A PH 12020550534 A PH12020550534 A PH 12020550534A PH 12020550534 A1 PH12020550534 A1 PH 12020550534A1
Authority
PH
Philippines
Prior art keywords
pulp fibers
highly water
absorbent polymer
absorbent articles
separated
Prior art date
Application number
PH12020550534A
Inventor
Takayoshi Konishi
Toshio Hiraoka
Takashi Kato
Noritomo Kurita
Original Assignee
Unicharm Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unicharm Corp filed Critical Unicharm Corp
Publication of PH12020550534A1 publication Critical patent/PH12020550534A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/70—Chemical treatment, e.g. pH adjustment or oxidation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • B09B3/35—Shredding, crushing or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • B09B3/38—Stirring or kneading
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/16—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0293—Dissolving the materials in gases or liquids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/20—Waste processing or separation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Paper (AREA)

Abstract

Provided is a method for highly efficiently removing a highly water-absorbent polymer from pulp fibers that have been separated from used absorbent articles and include residual highly water-absorbent polymer. A method for recovering pulp fibers from used absorbent articles that include the pulp fibers and a highly water-absorbent polymer, the method comprising: a solid-liquid separation step (S18) in which a deactivating aqueous solution that includes pulp fibers and highly water-absorbent polymer that have been separated from the used absorbent articles is separated into a solid that includes the pulp fibers and the highly water-absorbent polymer and a liquid that includes the highly water-absorbent polymer and the deactivating aqueous solution and, meanwhile, the highly water-absorbent polymer is smashed; and an oxidizing agent treatment step (S19) in which the pulp fibers and smashed highly water-absorbent polymer included in the separated solid are treated with an aqueous solution that includes an oxidizing agent.
PH12020550534A 2017-11-01 2020-04-30 Method and system for recovering pulp fibers from used absorbent articles PH12020550534A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017212277A JP6762287B2 (en) 2017-11-01 2017-11-01 Methods and systems for recovering pulp fibers from used absorbent articles
PCT/JP2018/028155 WO2019087489A1 (en) 2017-11-01 2018-07-26 Method and system for recovering pulp fibers from used absorbent articles

Publications (1)

Publication Number Publication Date
PH12020550534A1 true PH12020550534A1 (en) 2021-03-22

Family

ID=66331545

Family Applications (1)

Application Number Title Priority Date Filing Date
PH12020550534A PH12020550534A1 (en) 2017-11-01 2020-04-30 Method and system for recovering pulp fibers from used absorbent articles

Country Status (7)

Country Link
JP (1) JP6762287B2 (en)
KR (1) KR102304591B1 (en)
CN (1) CN111278901B (en)
AU (1) AU2018360436B2 (en)
PH (1) PH12020550534A1 (en)
TW (1) TWI726234B (en)
WO (1) WO2019087489A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7114523B2 (en) * 2019-04-26 2022-08-08 ユニ・チャーム株式会社 Method for producing recycled pulp fibers from used absorbent articles containing superabsorbent polymers, pulp fibers and excreta
TWI702094B (en) * 2019-05-30 2020-08-21 艾克斯馬克全球有限公司 Absorbent sanitary product treatment system and the treatment method of the same
JP7355714B2 (en) 2020-07-20 2023-10-03 ユニ・チャーム株式会社 Method for producing purified recycled pulp fiber from used sanitary products
WO2022067371A1 (en) * 2020-09-29 2022-04-07 Kirkford Pty Ltd Dewatering apparatus
JP2022072367A (en) 2020-10-29 2022-05-17 ユニ・チャーム株式会社 Method of treating effluent containing dissolved components of superabsorbent polymer
JP2022104407A (en) * 2020-12-28 2022-07-08 ユニ・チャーム株式会社 Pretreatment method and pretreatment system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2937996B1 (en) * 1998-02-20 1999-08-23 花王株式会社 Recovery method of water absorbent material
JP2001047023A (en) * 1999-08-10 2001-02-20 Wakaida Eng:Kk Method for disposing of paper diaper and apparatus for disposing of paper diaper
JP3450275B2 (en) * 2000-04-28 2003-09-22 株式会社大貴 How to recover the material from the soiled sanitary goods
JP2002273731A (en) * 2001-03-16 2002-09-25 Univ Fukuoka Paper diaper cutting pretreatment method for reutilizing used paper diaper
JP5075896B2 (en) * 2009-09-24 2012-11-21 大王製紙株式会社 Absorbent articles
JP6199243B2 (en) * 2014-06-12 2017-09-20 ユニ・チャーム株式会社 Method for producing recycled pulp from used sanitary products
JP6646924B2 (en) * 2014-09-22 2020-02-14 ユニ・チャーム株式会社 Method for recovering pulp fibers from used sanitary articles and recycled pulp obtained by the method
JP6203158B2 (en) * 2014-10-15 2017-09-27 ユニ・チャーム株式会社 Method for producing recycled pulp from used sanitary products
WO2017104062A1 (en) * 2015-12-18 2017-06-22 株式会社無有 Separation device, and method of manufacturing water absorbent material
JP6505045B2 (en) * 2016-04-11 2019-04-24 ユニ・チャーム株式会社 Method of recovering pulp fibers from used absorbent articles

Also Published As

Publication number Publication date
KR20200079257A (en) 2020-07-02
AU2018360436B2 (en) 2020-12-17
AU2018360436A1 (en) 2020-05-28
KR102304591B1 (en) 2021-09-24
TW201923195A (en) 2019-06-16
TWI726234B (en) 2021-05-01
CN111278901A (en) 2020-06-12
JP6762287B2 (en) 2020-09-30
WO2019087489A1 (en) 2019-05-09
CN111278901B (en) 2021-07-16
JP2019085447A (en) 2019-06-06

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