US2097121A - Process for prevention and removal of foam in the manufacture of paper - Google Patents
Process for prevention and removal of foam in the manufacture of paper Download PDFInfo
- Publication number
- US2097121A US2097121A US85806A US8580636A US2097121A US 2097121 A US2097121 A US 2097121A US 85806 A US85806 A US 85806A US 8580636 A US8580636 A US 8580636A US 2097121 A US2097121 A US 2097121A
- Authority
- US
- United States
- Prior art keywords
- foam
- paper
- manufacture
- preventing
- removal
- 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
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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
- 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
- D21H21/12—Defoamers
Definitions
- This invention relates to improvements in paper manufacture and is more particularly concerned with removing foam formed during the manufacture of paper and/or preventing the 5 formation of such foam.
- foam may be removed or formation of foam prevented through the use of small quantities of phosphatides, particularly vegetable phosphatides.
- the action is entirely as different from that of oils.
- the action of the latter is more of a mechanical nature and the formation of foam is prevented only when a thick enough layer of oil has formed on the liquid, whereas, when phosphatides are used, the surface so tension of the foam, that is, of the surface active particles, is reduced.
- the phosphatides, thin, are preferably used in solution.
- the solution may be added to the pulp or aqueous suspension of fibrous material to prevent foam formation, or added after formation of foam to remove the same.
- a process for preventing or removing foam during the manufacture of paper which comprises, introducing a material consisting essentially of a phosphatide to the aqueous suspension of fibrous material, and thereby preventing or removing foam.
- a process for preventing or removing foam during the manufacture of paper which comprises introducing phosphatides in aqueous solution to the aqueous suspension of fibrous material, and thereby preventing or removing foam.
- a process for preventing or removing foam during the manufacture of paper which comprises introducing a small quantity of vegetable phosphatides in aqueous solution to the aqueous suspensionof fibrous material, and thereby preventing or removing foam.
- a process for preventing or removing foam during the manufacture of paper which comprises, introducing a substantially oil free solution of phosphatides to the aqueous suspension of fibrous material, and thereby preventing or removing foam.
Landscapes
- Paper (AREA)
Description
Patented Oct. 26, 1937 raocnss son. raavnmon OIFOAMINTHE PAPER Richard Fromm. Hamburg, Germany,
Lehman Germany No Drawing.
AND REMOVAL MANUFACTURE OI assis'norto Com Hambm'a',
Application June 17, 1936, Serial In Germany June 28, 1935 4 Claims. (CI- 92-21) This invention relates to improvements in paper manufacture and is more particularly concerned with removing foam formed during the manufacture of paper and/or preventing the 5 formation of such foam.
At various manufacturing phases in the paper industry, a heavy formation of foam often takes place through the presence of surface active substances which is very objectionable. To avoid this, various expedients have been resorted to, for example, ether has been poured on the material or oil has been added to the paper pulp. Both of these prior processes have disadvantages, ether being inflammable and toxic and oils causing spots on'the finished paper. More recently attempts have been made to solve the foam problem and to overcome these disadvantages, by the use of solutions of oils in organic solvents. However, relatively large quantities of these expensive sub-- stances are required.
I have found that foam may be removed or formation of foam prevented through the use of small quantities of phosphatides, particularly vegetable phosphatides. The action is entirely as different from that of oils. The action of the latter is more of a mechanical nature and the formation of foam is prevented only when a thick enough layer of oil has formed on the liquid, whereas, when phosphatides are used, the surface so tension of the foam, that is, of the surface active particles, is reduced.
The phosphatides, thin, are preferably used in solution.
which may comprise leci- Such a solution is practically free from oil, and the to danger of spots such as are caused by oils or mixtures of oils with volatileorganic solvents, is entirely avoided.
The solution may be added to the pulp or aqueous suspension of fibrous material to prevent foam formation, or added after formation of foam to remove the same.
when the first drop of the solution is added,
' the foam bubbles burst and it requires but very small quantities to remove the foam completely. In the manufacture of paper, if the formation of foam takes place, such as, during the washing of rags, during the treatment of old paper, or at the strainer, such foam may be removed immediately by the addition of grams of a 10% aqueous solution of vegetable phosphatides. The process of my invention, however, is not limited to the foregoing quantity and solution concentration which are exemplary o Having described my invention, I claim:
1. A process for preventing or removing foam during the manufacture of paper, which comprises, introducing a material consisting essentially of a phosphatide to the aqueous suspension of fibrous material, and thereby preventing or removing foam.
2. A process for preventing or removing foam during the manufacture of paper which comprises introducing phosphatides in aqueous solution to the aqueous suspension of fibrous material, and thereby preventing or removing foam.
8. A process for preventing or removing foam during the manufacture of paper which comprises introducing a small quantity of vegetable phosphatides in aqueous solution to the aqueous suspensionof fibrous material, and thereby preventing or removing foam.
4. A process for preventing or removing foam during the manufacture of paper, which comprises, introducing a substantially oil free solution of phosphatides to the aqueous suspension of fibrous material, and thereby preventing or removing foam.
RICHARD FROM.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2097121X | 1935-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2097121A true US2097121A (en) | 1937-10-26 |
Family
ID=7984778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US85806A Expired - Lifetime US2097121A (en) | 1935-06-26 | 1936-06-17 | Process for prevention and removal of foam in the manufacture of paper |
Country Status (1)
Country | Link |
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US (1) | US2097121A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2429030A (en) * | 1941-08-22 | 1947-10-14 | West Virgin A Pulp And Paper C | Methods of suppressing foam on paper stock |
US2442768A (en) * | 1939-11-24 | 1948-06-08 | Dearborn Chemicals Co | Method of conditioning water |
US2639989A (en) * | 1946-04-25 | 1953-05-26 | United States Gypsum Co | Treatment of cellulosic pulps |
US2645617A (en) * | 1948-11-06 | 1953-07-14 | Gen Aniline & Film Corp | Paper pulp foam inhibitor |
US2923688A (en) * | 1958-01-29 | 1960-02-02 | American Cyanamid Co | Composition of matter for the control of foam |
US3146158A (en) * | 1962-04-30 | 1964-08-25 | Kimberly Clark Co | Inhibiting foaming of cellulose slurries containing wet strength resins |
US20110278496A1 (en) * | 2010-05-14 | 2011-11-17 | Arr-Maz Custom Chemicals, Inc. | Defoaming composition for high acid strength media |
-
1936
- 1936-06-17 US US85806A patent/US2097121A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2442768A (en) * | 1939-11-24 | 1948-06-08 | Dearborn Chemicals Co | Method of conditioning water |
US2429030A (en) * | 1941-08-22 | 1947-10-14 | West Virgin A Pulp And Paper C | Methods of suppressing foam on paper stock |
US2639989A (en) * | 1946-04-25 | 1953-05-26 | United States Gypsum Co | Treatment of cellulosic pulps |
US2645617A (en) * | 1948-11-06 | 1953-07-14 | Gen Aniline & Film Corp | Paper pulp foam inhibitor |
US2923688A (en) * | 1958-01-29 | 1960-02-02 | American Cyanamid Co | Composition of matter for the control of foam |
US3146158A (en) * | 1962-04-30 | 1964-08-25 | Kimberly Clark Co | Inhibiting foaming of cellulose slurries containing wet strength resins |
US20110278496A1 (en) * | 2010-05-14 | 2011-11-17 | Arr-Maz Custom Chemicals, Inc. | Defoaming composition for high acid strength media |
US9144758B2 (en) * | 2010-05-14 | 2015-09-29 | Arr-Maz Custom Chemicals, Inc. | Defoaming composition for high acid strength media |
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