US1806474A - Process for sizing paper - Google Patents

Process for sizing paper Download PDF

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Publication number
US1806474A
US1806474A US362853A US36285329A US1806474A US 1806474 A US1806474 A US 1806474A US 362853 A US362853 A US 362853A US 36285329 A US36285329 A US 36285329A US 1806474 A US1806474 A US 1806474A
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US
United States
Prior art keywords
paper
sulphate
resin
sizing
resin soap
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
US362853A
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English (en)
Inventor
Lecocq Ernest
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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 US1806474A publication Critical patent/US1806474A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21H17/62—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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper

Definitions

  • the present invention relates to a process for sizing paper, particularly to sizing with resin.
  • the bodies generally ad ed in the beating engine are composed of mineral and agglutinant resin soaps.
  • Resin is for example converted into resin soap by an alkali such as sodium carbonate or sodium hydroxide.
  • alkali such as sodium carbonate or sodium hydroxide.
  • resin soaps sizing milk
  • the resin is then precipitated on the fibres of the pulp by means of analuminium salt.
  • An alum or sulphate or aluminium which decomposes the alkaline resinate or the resin soap is generally used. This decomposition takes place in' an acid medium.
  • the object of the present invention is to remove these disadvantages and to facilitate resin'sizing and colouringof the paper, us ing a product of low value.
  • a bi-sulphate of an alkaline metal is used for this purpose either alone with the agglutinant, or mixed with other mineral and vegetable substances, particularly aluminium sulphate.
  • a process carried out according to the invention is described below by way of example.
  • 40 gms. of alkaline resinate obtained by solved in one litre of hot water and the solution is poured into the beater containing 200 kgs. of the paper pulp to be sized.
  • a second preparation is obtained by dissolving 180' gms. of aluminium sulphate and 200 gms. of
  • the solutions of sodium'bisulphate and aluminium sulphate are preferably added separately.
  • the solution of bisulphate is poured intov the beater some time (if possible half an hour) after the resinate and the solution of aluminium sulphate some a time after the bi-sulphate (if possible a quarter of an hour).
  • the bi-sulphate solution is the action of an alkaline salt on resin are dispreferably added before the aluminium sulphate in a tank containing the paper pulp. If the resultant sizing is insuflicient, aluminium sulphate is preferably added.
  • the acidity of the pul can then be wholly or ,partially neutralize 'in any known manner by means of a base or calcium carbonate.
  • About 1 kg. of powdered chalk is preferably used for each kg. of sulphuric acid (66 B.) to be neutralized.
  • the charge is comleted in order to'give the desired percentage by adding an inert substance such as kaolin.
  • a paper of better quality than by any other process is obtained, the retail price of which is five or six times less. It is to be noted 05 that the acid sulphates ofthe alkaline metals are obtained in a purer form than aluminium sulphate.- They are more easily freed from iron and are better mordants for fixing dyes, etc.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
US362853A 1928-06-08 1929-05-13 Process for sizing paper Expired - Lifetime US1806474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE313171X 1928-06-08

Publications (1)

Publication Number Publication Date
US1806474A true US1806474A (en) 1931-05-19

Family

ID=3867594

Family Applications (1)

Application Number Title Priority Date Filing Date
US362853A Expired - Lifetime US1806474A (en) 1928-06-08 1929-05-13 Process for sizing paper

Country Status (3)

Country Link
US (1) US1806474A (fr)
FR (1) FR675829A (fr)
GB (1) GB313171A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602739A (en) * 1943-04-14 1952-07-08 Shell Dev Sizing compositions and their preparation and use in paper
US2711370A (en) * 1954-04-12 1955-06-21 American Cyanamid Co Manufacture of sized, filled paper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602739A (en) * 1943-04-14 1952-07-08 Shell Dev Sizing compositions and their preparation and use in paper
US2711370A (en) * 1954-04-12 1955-06-21 American Cyanamid Co Manufacture of sized, filled paper

Also Published As

Publication number Publication date
GB313171A (en) 1930-04-10
FR675829A (fr) 1930-02-14

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