GB507791A - Improvements in and relating to the recovery of pulp from printed paper - Google Patents

Improvements in and relating to the recovery of pulp from printed paper

Info

Publication number
GB507791A
GB507791A GB878338A GB878338A GB507791A GB 507791 A GB507791 A GB 507791A GB 878338 A GB878338 A GB 878338A GB 878338 A GB878338 A GB 878338A GB 507791 A GB507791 A GB 507791A
Authority
GB
United Kingdom
Prior art keywords
pulp
printed paper
relating
recovery
paper
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB878338A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB878338A priority Critical patent/GB507791A/en
Publication of GB507791A publication Critical patent/GB507791A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D21C5/025—De-inking
    • D21C5/027—Chemicals therefor
    • 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

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Paper (AREA)

Abstract

507,791. Paper pulp. McGREGOR, E. T. March 22, 1938, No. 8783. [Class 2 (ii)] For producing a de-inked paper stock from printed paper, the latter after soaking in water, is agitated with a solution of trisodium phosphate at or below atmospheric temperature. After agitation, it is convenient to add such a quantity of water as will cause the oil, carbon &c. to float to the surface, whereupon these impurities are drained off. After separation the pulp is washed, pressed, &c., and the solution is filtered, strengthened and returned for re-use. Reference has been directed by the Comptroller to U.S.A. Specification 1,933,228.
GB878338A 1938-03-22 1938-03-22 Improvements in and relating to the recovery of pulp from printed paper Expired GB507791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB878338A GB507791A (en) 1938-03-22 1938-03-22 Improvements in and relating to the recovery of pulp from printed paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878338A GB507791A (en) 1938-03-22 1938-03-22 Improvements in and relating to the recovery of pulp from printed paper

Publications (1)

Publication Number Publication Date
GB507791A true GB507791A (en) 1939-06-21

Family

ID=9859175

Family Applications (1)

Application Number Title Priority Date Filing Date
GB878338A Expired GB507791A (en) 1938-03-22 1938-03-22 Improvements in and relating to the recovery of pulp from printed paper

Country Status (1)

Country Link
GB (1) GB507791A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360512A (en) * 1989-03-15 1994-11-01 Woodfree Limited Method and product for treating waste paper material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360512A (en) * 1989-03-15 1994-11-01 Woodfree Limited Method and product for treating waste paper material

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