CA2079090A1 - Papermaking process - Google Patents

Papermaking process

Info

Publication number
CA2079090A1
CA2079090A1 CA002079090A CA2079090A CA2079090A1 CA 2079090 A1 CA2079090 A1 CA 2079090A1 CA 002079090 A CA002079090 A CA 002079090A CA 2079090 A CA2079090 A CA 2079090A CA 2079090 A1 CA2079090 A1 CA 2079090A1
Authority
CA
Canada
Prior art keywords
microparticle
addition
papermaking process
flocculant
cationic
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.)
Granted
Application number
CA002079090A
Other languages
French (fr)
Other versions
CA2079090C (en
Inventor
James H. Smith, Jr.
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.)
ChampionX LLC
Original Assignee
James H. Smith, Jr.
Nalco Chemical Company
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 James H. Smith, Jr., Nalco Chemical Company filed Critical James H. Smith, Jr.
Publication of CA2079090A1 publication Critical patent/CA2079090A1/en
Application granted granted Critical
Publication of CA2079090C publication Critical patent/CA2079090C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • 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
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
    • D21H23/06—Controlling the addition
    • D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
    • 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

Abstract

In a papermaking process a paper product is formed from a mineral filler containing cellulosic slurry. Retention performance is provided by the sequential addition of a cationic charge-biasing species, an anionic flocculant, and then a certain microparticle. A shear stage is interposed between the flocculant addition and the microparticle addition. The microparticle is a inorganic, cationic source of aluminum.
CA002079090A 1991-09-27 1992-09-24 Papermaking process Expired - Fee Related CA2079090C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/766,310 US5221435A (en) 1991-09-27 1991-09-27 Papermaking process
US766,310 1991-09-27

Publications (2)

Publication Number Publication Date
CA2079090A1 true CA2079090A1 (en) 1993-03-28
CA2079090C CA2079090C (en) 2004-11-23

Family

ID=25076062

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002079090A Expired - Fee Related CA2079090C (en) 1991-09-27 1992-09-24 Papermaking process

Country Status (14)

Country Link
US (1) US5221435A (en)
EP (1) EP0534656B1 (en)
KR (1) KR100229973B1 (en)
AT (1) ATE131558T1 (en)
AU (1) AU649563B2 (en)
CA (1) CA2079090C (en)
DE (1) DE69206735T2 (en)
DK (1) DK0534656T3 (en)
ES (1) ES2083101T3 (en)
FI (1) FI113196B (en)
NO (1) NO180421C (en)
TR (1) TR27793A (en)
TW (1) TW210369B (en)
ZA (1) ZA927322B (en)

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Also Published As

Publication number Publication date
FI924304A (en) 1993-03-28
KR100229973B1 (en) 1999-11-15
DK0534656T3 (en) 1996-03-25
NO923733L (en) 1993-03-29
ZA927322B (en) 1993-06-07
US5221435A (en) 1993-06-22
DE69206735T2 (en) 1996-07-04
NO923733D0 (en) 1992-09-25
TW210369B (en) 1993-08-01
ES2083101T3 (en) 1996-04-01
AU649563B2 (en) 1994-05-26
FI924304A0 (en) 1992-09-25
TR27793A (en) 1995-08-29
ATE131558T1 (en) 1995-12-15
DE69206735D1 (en) 1996-01-25
CA2079090C (en) 2004-11-23
KR930006256A (en) 1993-04-21
EP0534656A1 (en) 1993-03-31
FI113196B (en) 2004-03-15
EP0534656B1 (en) 1995-12-13
AU2525492A (en) 1993-04-01
NO180421B (en) 1997-01-06
NO180421C (en) 1997-04-16

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