CA2059529A1 - Treatment of fibrous materials - Google Patents

Treatment of fibrous materials

Info

Publication number
CA2059529A1
CA2059529A1 CA002059529A CA2059529A CA2059529A1 CA 2059529 A1 CA2059529 A1 CA 2059529A1 CA 002059529 A CA002059529 A CA 002059529A CA 2059529 A CA2059529 A CA 2059529A CA 2059529 A1 CA2059529 A1 CA 2059529A1
Authority
CA
Canada
Prior art keywords
suspension
treatment
fibrous materials
additives
freshly prepared
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
CA002059529A
Other languages
French (fr)
Other versions
CA2059529C (en
Inventor
Peter C. R. Street
David Barlow
Michel J. Jaycock
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.)
Ciba Specialty Chemicals RC GB Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26295679&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2059529(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB898917407A external-priority patent/GB8917407D0/en
Priority claimed from GB898917408A external-priority patent/GB8917408D0/en
Application filed by Individual filed Critical Individual
Publication of CA2059529A1 publication Critical patent/CA2059529A1/en
Application granted granted Critical
Publication of CA2059529C publication Critical patent/CA2059529C/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
    • 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
    • D21H17/62—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
    • 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
    • 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
    • D21H23/20—Apparatus therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)

Abstract

A method of providing a mixture of additives in an aqueous suspension of fibres to be used for the manufacture of paper, the method comprises providing within the suspension a localized zone of a freshly prepared mixture of discrete liquid streams of the additives, and causing the freshly prepared mixture to be dispersed within the suspension. The additive streams may be of a rosin emulsion and an aluminium salt solution.
CA002059529A 1989-07-29 1990-07-30 Treatment of fibrous materials Expired - Fee Related CA2059529C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB898917407A GB8917407D0 (en) 1989-07-29 1989-07-29 Papermaking
GB8917408.0 1989-07-29
GB8917407.2 1989-07-29
GB898917408A GB8917408D0 (en) 1989-07-29 1989-07-29 Paper sizing
PCT/GB1990/001176 WO1991002119A1 (en) 1989-07-29 1990-07-30 Treatment of fibrous materials

Publications (2)

Publication Number Publication Date
CA2059529A1 true CA2059529A1 (en) 1991-01-30
CA2059529C CA2059529C (en) 2001-11-27

Family

ID=26295679

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002059529A Expired - Fee Related CA2059529C (en) 1989-07-29 1990-07-30 Treatment of fibrous materials

Country Status (7)

Country Link
EP (1) EP0485498B2 (en)
AU (1) AU6186490A (en)
CA (1) CA2059529C (en)
DE (1) DE69028631T2 (en)
ES (1) ES2094161T5 (en)
GB (1) GB9201848D0 (en)
WO (1) WO1991002119A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292158B (en) * 1994-07-26 1998-12-09 Roe Lee Paper Chemicals Compan Sizing method
FI108802B (en) * 1998-02-26 2002-03-28 Wetend Technologies Oy A method and apparatus for feeding a chemical into a liquid stream and a paper machine feeding system
US7234857B2 (en) 1998-02-26 2007-06-26 Wetend Technologies Oy Method and apparatus for feeding a chemical into a liquid flow
US6543382B1 (en) * 2002-02-08 2003-04-08 Delaval, Inc. Side outlet milking claw
FI115148B (en) * 2003-10-08 2005-03-15 Wetend Technologies Oy A method and apparatus for introducing a chemical into a liquid stream
DE102010028577A1 (en) 2010-05-05 2011-11-10 Voith Patent Gmbh Method for adding a chemical to a process stream
DE102010028574A1 (en) * 2010-05-05 2011-11-10 Voith Patent Gmbh mixing arrangement
WO2013072277A2 (en) * 2011-11-14 2013-05-23 Basf Se Akd composition and manufacture of paper and paperboard

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2041285A (en) * 1933-09-28 1936-05-19 Cew Judson A De Paper sizing
GB2141751B (en) * 1983-06-03 1987-07-08 Roe Lee Paper Chemicals Compan Sizing compositions

Also Published As

Publication number Publication date
ES2094161T5 (en) 2000-06-16
GB9201848D0 (en) 1992-03-18
EP0485498B2 (en) 1999-12-08
DE69028631T2 (en) 1997-02-27
AU6186490A (en) 1991-03-11
EP0485498A1 (en) 1992-05-20
CA2059529C (en) 2001-11-27
EP0485498B1 (en) 1996-09-18
ES2094161T3 (en) 1997-01-16
WO1991002119A1 (en) 1991-02-21
DE69028631D1 (en) 1996-10-24

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed