EP0178033A3 - Neutral paper and process for its manufacture - Google Patents

Neutral paper and process for its manufacture Download PDF

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Publication number
EP0178033A3
EP0178033A3 EP85201656A EP85201656A EP0178033A3 EP 0178033 A3 EP0178033 A3 EP 0178033A3 EP 85201656 A EP85201656 A EP 85201656A EP 85201656 A EP85201656 A EP 85201656A EP 0178033 A3 EP0178033 A3 EP 0178033A3
Authority
EP
European Patent Office
Prior art keywords
calcium carbonate
water
alkaline
mixture
manufacture
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.)
Withdrawn
Application number
EP85201656A
Other languages
German (de)
French (fr)
Other versions
EP0178033A2 (en
Inventor
Alfonso Graf Garduno
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
Publication of EP0178033A2 publication Critical patent/EP0178033A2/en
Publication of EP0178033A3 publication Critical patent/EP0178033A3/en
Withdrawn legal-status Critical Current

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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
    • D21H23/765—Addition of all compounds to the pulp
    • 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
    • D21H17/62—Rosin; Derivatives thereof
    • 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
    • D21H17/66—Salts, e.g. alums
    • 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

Landscapes

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

Abstract

A neutral or alkaline paper having highly uniform tone, higher bursting point and greater opacity is described. The manufacturing process consists primarily in neutralizing to a pH of 7 or more and acid mixture of fibers, sizing agents and aluminium sulphate with alkaline-earth metal oxides or hydro­ xides and their derivates. The mixture so neutralized allows the use of calcium carbonate as a filler in the stock, resulting in greater ingredient retention and a lesser amount of fines in the water, this residual water being a clear water that can be recycled. The substitution of clays by calcium carbonate reduces or eliminates machinery wear. Implementation of the process does not require using additional, new or different manufacturing equipment while it implies an immediate reduction in costs.
EP85201656A 1984-10-10 1985-10-10 Neutral paper and process for its manufacture Withdrawn EP0178033A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US65936184A 1984-10-10 1984-10-10
US659361 2000-09-12

Publications (2)

Publication Number Publication Date
EP0178033A2 EP0178033A2 (en) 1986-04-16
EP0178033A3 true EP0178033A3 (en) 1987-01-28

Family

ID=24645089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201656A Withdrawn EP0178033A3 (en) 1984-10-10 1985-10-10 Neutral paper and process for its manufacture

Country Status (3)

Country Link
EP (1) EP0178033A3 (en)
BR (1) BR8505044A (en)
ES (1) ES8605604A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07100391B2 (en) * 1991-08-15 1995-11-01 日本製紙株式会社 Inkjet recording paper
US5833807A (en) * 1997-04-17 1998-11-10 E. I. Du Pont De Nemours And Company Aramid dispersions and aramid sheets of increased uniformity

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1803642A (en) * 1928-09-05 1931-05-05 Raffold Process Corp Paper product and method of making the same
US2109931A (en) * 1935-08-28 1938-03-01 Du Pont Paper sizing
DE813486C (en) * 1949-03-25 1951-09-13 Johannes Behnke Process for improving the sizing effect in the production of paper, cardboard or cardboard
SU711219A1 (en) * 1977-12-20 1980-01-28 Ленинградская Ордена Ленина Лесотехническая Академия Им.С.М.Кирова Paper stock sizing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1803642A (en) * 1928-09-05 1931-05-05 Raffold Process Corp Paper product and method of making the same
US2109931A (en) * 1935-08-28 1938-03-01 Du Pont Paper sizing
DE813486C (en) * 1949-03-25 1951-09-13 Johannes Behnke Process for improving the sizing effect in the production of paper, cardboard or cardboard
SU711219A1 (en) * 1977-12-20 1980-01-28 Ленинградская Ордена Ленина Лесотехническая Академия Им.С.М.Кирова Paper stock sizing method

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 51, no. 1, July 1980, page 136, no. 1093, Appleton, Wisconsin, US: & SU - A - 711 219 (G.I. CHIZHOV et al.) 25-01-1980 *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 52, no. 9, March 1982, page 1050, abstract no. 9925, Appleton, Wisconsin, US; P. KRKOSKA et al.: "Optimizing rosing sizing of paper" & ZELLSTOFF PAPIER 30, no. 5:212-214 (September/October 1981) *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 54, no. 11, May 1984, pages 1295,1296, abstract no. 12204, Appleton, Wisconsin, US; T. LINDSTR\M et al.: "Studies on internal rosin sizing. (3). Effects of pH, electrolyte concentration, and concentration of clacium lignosulfonate on size retention" & SVENSK PAPPERSTID. 87, no. 3: R2-7 (22nd February 1984) *
TAPPI JOURNAL, vol. 66, no. 12, December 1983, pages 68-71, Atlanta, Georgia, US; J. MARTON et al.: "Effect of fillers on rosin sizing of paper" *

Also Published As

Publication number Publication date
EP0178033A2 (en) 1986-04-16
ES547718A0 (en) 1986-03-16
BR8505044A (en) 1986-07-29
ES8605604A1 (en) 1986-03-16

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