US1833805A - Manufacture of paper making material - Google Patents

Manufacture of paper making material Download PDF

Info

Publication number
US1833805A
US1833805A US40421329A US1833805A US 1833805 A US1833805 A US 1833805A US 40421329 A US40421329 A US 40421329A US 1833805 A US1833805 A US 1833805A
Authority
US
United States
Prior art keywords
paper
paper making
making material
manufacture
mixture
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 - Lifetime
Application number
Inventor
Watanabe Ko
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
Application granted granted Critical
Publication of US1833805A publication Critical patent/US1833805A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • This invention relates to the manufacture of paper making material and has for its object to recover pulp of old printed paper by de-inking. l
  • the characteristic feature of this invention is to make an emulsion of oily substance produced by adding to h drogen and naphthalin such as decalin an tetralin, a solvent of printing ink and dry printing ink, by the action of a suitable dispersing medium such as soap solution, glue solution and starch solution, and to mix the resultant emulsion of the said oily substance with old printed paper preliminarily treated with alkali and' thereupon de-ink the same by dissolution and dispersion of ink matter into the said dispersed solvent oil.
  • the ob'ect of this invention is to attain the de-inln'ng of old printed paper easily and completely and torecover useful paper making materlal of the same grade as that of the old paper used, by a simple and economical process.
  • old printed paper has not been utilized as a raw material for the recovery of high gradepaper pulp on account of the difiiculty of de-inking. But, by the improved method of such invention this old printed paper may be satisfactorily used as p a raw material for the same purpose, and also a successful utilization can be attained of old printed paper, which is of great demand.
  • the execution of this invention is as follows To make an emulsion of hydrogen and naphthalin, a solution of soap as the disper'sing medium made of any sort of fats or oils such as soap of sesame oil is used.
  • the next treatment is the tearing or break into the kneading machine through respecing up of old printed paper. For this pur-.
  • the kneaded paper mixture which is black in colour, is discharged from the kneading machine, and then poured down into the paper making potcher or the mixing machine and now the emulsion of tetralin is added to this mixture then the whole of this is agitated by constant rotation for about thirty minutes.
  • dry printing ink on old printed paper is completely peptized into minute particles, and as a result of this the pigment contained in printing ink, such as lamp black, is also completely suspended in the dispersed solvent oil.
  • This dispersed mixture therefore, contains minute particles of peptized ink, matter so that when one scoops up and presses this mixture between the'hands a blackish muddy liquor will be separated from the mixture and a white paper fibre will remain in the hands.
  • T e produced material thus gained is then made up into dry pulp by a wet machine or into paper by being directly poured into a beater.

Description

Patented Nov. 24, 1931 UNITED STATES PATENT OFFICE KO WATANABE, F HIGASHI-KU, NAGOYA, JAPAN mamac'ruan or PAPER MAKING MATERIAL Io Drawing. Application filed November 1, 1929, Serial No. 404,213, and in Japan February 23, 1929.
This invention relates to the manufacture of paper making material and has for its object to recover pulp of old printed paper by de-inking. l
, The characteristic feature of this invention is to make an emulsion of oily substance produced by adding to h drogen and naphthalin such as decalin an tetralin, a solvent of printing ink and dry printing ink, by the action of a suitable dispersing medium such as soap solution, glue solution and starch solution, and to mix the resultant emulsion of the said oily substance with old printed paper preliminarily treated with alkali and' thereupon de-ink the same by dissolution and dispersion of ink matter into the said dispersed solvent oil. Y
The ob'ect of this invention is to attain the de-inln'ng of old printed paper easily and completely and torecover useful paper making materlal of the same grade as that of the old paper used, by a simple and economical process.
Heretofore old printed paper has not been utilized as a raw material for the recovery of high gradepaper pulp on account of the difiiculty of de-inking. But, by the improved method of such invention this old printed paper may be satisfactorily used as p a raw material for the same purpose, and also a successful utilization can be attained of old printed paper, which is of great demand.
The execution of this invention is as follows To make an emulsion of hydrogen and naphthalin, a solution of soap as the disper'sing medium made of any sort of fats or oils such as soap of sesame oil is used.
To explain this more fully about lbs. of such soap of sesame oil is dissolved in a proper quantity of water, this solution is then mixed with about 20 litres of tetralin, the resultant mixture is then violently agitated, thus producing the emulsion of tetralin.
The next treatment is the tearing or break into the kneading machine through respecing up of old printed paper. For this pur-.
"of this paper mixture old paper is greatly softened by the action of coexisting chemical caustic soda, so that the kneading action proceeds much easier than when kneaded with water only.
The kneaded paper mixture, which is black in colour, is discharged from the kneading machine, and then poured down into the paper making potcher or the mixing machine and now the emulsion of tetralin is added to this mixture then the whole of this is agitated by constant rotation for about thirty minutes. During this agitation in the potcher or the o5 mixing machine dry printing ink on old printed paper is completely peptized into minute particles, and as a result of this the pigment contained in printing ink, such as lamp black, is also completely suspended in the dispersed solvent oil. This dispersed mixture, therefore, contains minute particles of peptized ink, matter so that when one scoops up and presses this mixture between the'hands a blackish muddy liquor will be separated from the mixture and a white paper fibre will remain in the hands.
poured again into the potcher or the mixing machine with water and thereafter repeatedly washed by the drum washer or it may be poured down into a tank having a mat stretched over the bottom and provided with agitators and in this tank the muddy liquor is filtered and separated.
In actual practice of this washing process, there rarely appears minute black spots on the washed pulp mixture even if the quantity of the latter is very small. But these spots may be completely removed by wash ing and adding a small quantity of alkali, as said phenomena of black spots chiefly appear owing to a lack of the -alkalinity of the kneaded paper mixture. Moreover this removing effect is better attained when a small 7 quantity of soap is added with the alkali. The resultant product after washing is completely de-inked and the fibre consisting of old rinted paper can thus be obtained.
T e produced material thus gained is then made up into dry pulp by a wet machine or into paper by being directly poured into a beater.
I claim: Method of manufacturing paper making material'consisting in preparing an emulsion of oily substance including hydrogen and I naphthalin with a solvent of printing ink and dry printingink, by the action of soap solution as a dispersing medium and then mixing the resultant emulsion with old printed paper preliminarily treated with alkali and thereupon de-inking by the dissolution anld dispersion into the said dispersed solvent 01 In witness whereof I have hereunto set my hand.
KO WATANABE.
US40421329 1929-02-23 1929-11-01 Manufacture of paper making material Expired - Lifetime US1833805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1833805X 1929-02-23

Publications (1)

Publication Number Publication Date
US1833805A true US1833805A (en) 1931-11-24

Family

ID=16134751

Family Applications (1)

Application Number Title Priority Date Filing Date
US40421329 Expired - Lifetime US1833805A (en) 1929-02-23 1929-11-01 Manufacture of paper making material

Country Status (1)

Country Link
US (1) US1833805A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580446A (en) * 1994-10-20 1996-12-03 International Paper Company Screen, vortex apparatus for cleaning recycled pulp and related process
US20040188480A1 (en) * 2001-10-10 2004-09-30 Carl-Olof Palm Method of separating colouring agents, particularly printing ink, from recycled fibre material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580446A (en) * 1994-10-20 1996-12-03 International Paper Company Screen, vortex apparatus for cleaning recycled pulp and related process
US5707488A (en) * 1994-10-20 1998-01-13 International Paper Company Screen/vortex apparatus for cleaning recycled pulp related process
US20040188480A1 (en) * 2001-10-10 2004-09-30 Carl-Olof Palm Method of separating colouring agents, particularly printing ink, from recycled fibre material

Similar Documents

Publication Publication Date Title
US3501373A (en) De-inking waste printed cellulosic stock
US2743178A (en) Process for de-inking printed waste paper
US3446696A (en) Method of de-inking with a non-ionic detergent
US1833805A (en) Manufacture of paper making material
US1833804A (en) Manufacture of paper making material
US2112562A (en) Process of deinking paper
US1933228A (en) Recovery of pulp from waste paper
US3189516A (en) Method of manufacturing ink-free pulp with unbroken fibres from reclaimed paper
US2582496A (en) Deinking and bleaching of paper
US1572478A (en) Process for reclaiming used paper
US1833852A (en) Manufacture of paper making material
US3069307A (en) Oxyalkylated phenol process
US2390695A (en) Method of treating paper stock
US1729629A (en) Raw material for cellulose derivatives and process of preparation
US2221294A (en) Decolorizing paper stock
US1585092A (en) Method for deinking printed paper
US2580161A (en) Process of deinking printed waste paper
JPH10506441A (en) Method and apparatus for continuous production of cellulose pulp
US1424411A (en) Method for recovering waste paper
US1991823A (en) Reclaiming pulp from waste paper
JPH04222284A (en) Method for recycling and pulping waste heat-sensitive recording paper
US1826179A (en) Removing printing ink from paper
US1625279A (en) Process of utilizing old paper stock
EP0247307B1 (en) Process for decolourizing papers, coloured in the mass, and carbonless copying papers
US2242087A (en) Papermaking pulp mixture and method of producing the same