WO2013125968A4 - A process for retaining calcium carbonate filler in lightweight creped (tissue) paper without negatively affecting the quality of the paper - Google Patents

A process for retaining calcium carbonate filler in lightweight creped (tissue) paper without negatively affecting the quality of the paper Download PDF

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Publication number
WO2013125968A4
WO2013125968A4 PCT/PT2013/000011 PT2013000011W WO2013125968A4 WO 2013125968 A4 WO2013125968 A4 WO 2013125968A4 PT 2013000011 W PT2013000011 W PT 2013000011W WO 2013125968 A4 WO2013125968 A4 WO 2013125968A4
Authority
WO
WIPO (PCT)
Prior art keywords
paper
process according
calcium carbonate
filler
gsm
Prior art date
Application number
PCT/PT2013/000011
Other languages
French (fr)
Other versions
WO2013125968A1 (en
Inventor
Victor Manuel CORREIA DA SILVA
Original Assignee
Fapajal - Fábrica De Papel Do Tojal, S.A.
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 Fapajal - Fábrica De Papel Do Tojal, S.A. filed Critical Fapajal - Fábrica De Papel Do Tojal, S.A.
Priority to EP13708928.0A priority Critical patent/EP2825700A1/en
Publication of WO2013125968A1 publication Critical patent/WO2013125968A1/en
Publication of WO2013125968A4 publication Critical patent/WO2013125968A4/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)

Abstract

The current invention involves a new process for fixing non- cellulosic fillers onto tissue paper between 14 gsm and 50 gsm, either for paper produced from a cellulosic furnish of virgin fibers or for paper produced from a cellulosic furnish of recycled fibers derived from recycled papers. The process consists essentially of introducing in a cellulosic fibrous solution a non-cellulosic filler of calcium carbonate (CaC03) or other, then applying, in sequence, two chemical agents, a micro-particle added before the pressure screen and a polymer in the fibrous solution after the pressure screen. The process did not affect the quality of the paper sheet nor the paper making equipment.

Claims

AMENDED CLAIMS received by the International Bureau on 26 August 2013 (26.08.2013)
1. Process of retaining non-cellulosic fillers in lightweight creped (tissue) paper between 12 gsm and 35 gsm, where the tissue paper machine is specifically a Crescent Former with no negative effect on the paper sheet characteristics with the application in sequence of the chemical agents characterized in that:
a) A solution of calcium carbonate (CaC03) filler is introduced in the cellulosic fibrous solution in the intake of the fan-pump or in the level box of the paper machine;
b) A chemical agent being an anionic inorganic micro- particle of the silica family is applied in the fibrous solution with the calcium carbonate solution already incorporated, before the pressure screen and, therefore, before the polymer; c) A chemical agent being an oil-base cationic polymer of the Core Shell family is injected in the fibrous solution after the pressure screen.
2. Process according to claim 1 characterized by the calcium carbonate filler being either in natural form ("GCC") or precipitated form ("PCC") .
3. Process according to claims 1 and 2 characterized by the calcium carbonate filler being applied in a dilution of 72% filler to 28% water.
4. Process according to claims 1-3, characterized by the carbonate filler comprising from 2% to 10%, and preferentially 2% to 7% of the weight of the dry paper sheet made from virgin pulp, in light creped papers from 12 gsm to 35 gsm; with similar incorporation, in addition to the filler already in the fibrous solution, in the case of recycled tissue papers from 13 gsm to 35 gsm.
5. Process according to claim n° 1-3 characterized by the fact that the calcium carbonate in an aqueous solution is added to the slurry as is, with no pre-treatment and no other chemical agent added to the calcium carbonate either before or during the feeding of the filler to the slurry.
6. Process according to claims 1-5, characterized by the silicate-based micro-particule being applied in the proportion of 1.5 Kg to 5 Kg per ton of dry paper produced.
7. Process according to claims 1-5, characterized by the micro-particle being applied as is, without dilution.
8. Process according to claims 1-6, characterized by the polymer being an oil-base cationic retention agent of the Core Shell family, with a modified polyacrylamide cationic chain, applied in the proportion of 300g to 700g per ton of paper produced.
9. Process according to claims 1-6, characterized by application of the oil-base cationic retention agent of the Core Shell family using one aqueous dilution only, of 0.3% to 0.5%,
10. Process according to 1-6 and 9, characterized by application of the polymer using an additional second aqueous dilution of between 10% and 40% of the product prepared in the first dilution.
11. Process according to all the above claims, characterized by the percentage of fibers and calcium carbonate filler lost in the white waters being recuperated by fiber recover equipment and re-introduced in the machine chest where it returns to the papermaking process.
PCT/PT2013/000011 2012-02-20 2013-02-19 A process for retaining calcium carbonate filler in lightweight creped (tissue) paper without negatively affecting the quality of the paper WO2013125968A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13708928.0A EP2825700A1 (en) 2012-02-20 2013-02-19 A process for retaining calcium carbonate filler in lightweight creped (tissue) paper without negatively affecting the quality of the paper

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT106170A PT106170A (en) 2012-02-20 2012-02-20 PROCESS OF FIXATION OF CALCIUM CARBONATE LOADS IN CREPED LIGHT PAPERS (TISSU) WITHOUT NEGATIVE IMPACT ON PAPER CHARACTERISTICS
PT106170 2012-02-20

Publications (2)

Publication Number Publication Date
WO2013125968A1 WO2013125968A1 (en) 2013-08-29
WO2013125968A4 true WO2013125968A4 (en) 2013-10-17

Family

ID=47846113

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT2013/000011 WO2013125968A1 (en) 2012-02-20 2013-02-19 A process for retaining calcium carbonate filler in lightweight creped (tissue) paper without negatively affecting the quality of the paper

Country Status (3)

Country Link
EP (1) EP2825700A1 (en)
PT (1) PT106170A (en)
WO (1) WO2013125968A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221435A (en) * 1991-09-27 1993-06-22 Nalco Chemical Company Papermaking process
US5672249A (en) * 1996-04-03 1997-09-30 The Procter & Gamble Company Process for including a fine particulate filler into tissue paper using starch
US5700352A (en) * 1996-04-03 1997-12-23 The Procter & Gamble Company Process for including a fine particulate filler into tissue paper using an anionic polyelectrolyte
ID16844A (en) * 1996-05-01 1997-11-13 Nalco Chemical Co PAPER MAKING PROCESS
FI19992598A (en) * 1999-12-02 2001-06-03 Kemira Chemicals Oy Procedure for making paper

Also Published As

Publication number Publication date
EP2825700A1 (en) 2015-01-21
WO2013125968A1 (en) 2013-08-29
PT106170A (en) 2013-08-20

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