US792932A - Printing-paper. - Google Patents

Printing-paper. Download PDF

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Publication number
US792932A
US792932A US20392404A US1904203924A US792932A US 792932 A US792932 A US 792932A US 20392404 A US20392404 A US 20392404A US 1904203924 A US1904203924 A US 1904203924A US 792932 A US792932 A US 792932A
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US
United States
Prior art keywords
paper
saponin
printing
solution
glucoside
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
US20392404A
Inventor
Josef Von Schmaedel
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Individual
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Individual
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Priority to US20392404A priority Critical patent/US792932A/en
Application granted granted Critical
Publication of US792932A publication Critical patent/US792932A/en
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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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch

Definitions

  • the object of the present invention is to remove certain disadvantages of the old methods referred to and to impart to the paper a very high degree of capacity for absorption and also increased flexibility and suitability for being glazed. This is effected by adding to the paper at any stage of its manufacture one of thesubstances belonging to the glucoside series and soluble in wateras, for instance, esculin or saponin, the latter being preferably used.
  • This substance (saponin,) dissolved in water in the proportion of one to five grams saponin to one liter water, may be mixed with the pulp in the rag-engine or the vat, or the half-finished or finished paper can be drawn through a solution of the said substance in such a manner that the fibers of the paper become saturated therewith.
  • a five-per-cent. solution of the glucoside is usually sufficient for the purpose in view. Solutions of other strengths can, however, of course be used for paper intended for special purposes.
  • the substances may be mixed in any desired manner, provided they remain soluble in water.
  • these glucosides which are soluble in water-more particularly saponin for the manufacture of printing-paper the advantage is obtained that the paper fibers are completely saturated with the solution, and thus rendered highly flexible or pliant and capable of being glazed.
  • the glucosides are deposited between the fibers in a state of infinitely-fine distribution and impart to the paper a close structure, which is of great advantage for printing.
  • the fiber thus treatedthat is to say, saturated with saponin solution, for instance,and then dried readily absorbs printing-ink and is particularly well adapted to take ink from the forms.
  • glocoside solutions more particularly saponin solutions, even when very weak have the capacity of holding pulverized insoluble substances in suspension for a very long time. This is of great importance when saponin is introduced into the rag-engine or vat.
  • a saponin solution can, for instance, be directly mixed with a resin solution, so that an extremely finely divided resin emulsion is obtained in which neither lumps nor deposits are formed. This is also the case if a bath of saponin solution is used to which resin emulsion is added.
  • the saponin is added to a solution or emulsion of resin or other equivalent material,.as fat, oil, Wax, &c., a proportion of one kilogram resin, &c., to fifty to six hundred grams saponin is preferably used.
  • the finely-cut fiber of the pulp also remains in finely-divided suspension in the saponin solution, by which means the homogeneousness of the paper is considerably increased.

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  • Color Printing (AREA)
  • Paper (AREA)

Description

rrn Smarts Patented June 20, 190 5.
JOSEF VON SCHMAEDEL, OF MUNICH, GERMANY.
PRINTING-PAPER.
SPECIFICATION formingpart of Letters Patent No. 792,932, dated (Tune 20, 1905.
Application filed April 19, 1904. Serial No. 203,924.
To all whom it may concern:
Be it known that I, J OSEF VON SonMAnDnL, manufacturer, a subject of the German Emperor and of the King of Bavaria, and a resident of Munich, in the Kingdom of Bavaria, German Empire, have invented new and useful Improvements in Printing-Paper, of which the following is a specification.
In order to impart toprinting-paper the high degree of capacity for the absorption of printing-ink required by the modern processes of reproduction, it has hitherto been usual to add certain suitable substances to the pulp or.
to provide the surface of the finished paper with a suitable coating, the said surface being rendered smooth and close-grained by means of glazing. The object of the present invention is to remove certain disadvantages of the old methods referred to and to impart to the paper a very high degree of capacity for absorption and also increased flexibility and suitability for being glazed. This is effected by adding to the paper at any stage of its manufacture one of thesubstances belonging to the glucoside series and soluble in wateras, for instance, esculin or saponin, the latter being preferably used. This substance, (saponin,) dissolved in water in the proportion of one to five grams saponin to one liter water, may be mixed with the pulp in the rag-engine or the vat, or the half-finished or finished paper can be drawn through a solution of the said substance in such a manner that the fibers of the paper become saturated therewith. With all these different methods of performing the process a five-per-cent. solution of the glucoside is usually sufficient for the purpose in view. Solutions of other strengths can, however, of course be used for paper intended for special purposes.-
It is not essential to use only one substance of the glucoside series in each case. The substances may be mixed in any desired manner, provided they remain soluble in water. By using these glucosides which are soluble in water-more particularly saponin for the manufacture of printing-paper the advantage is obtained that the paper fibers are completely saturated with the solution, and thus rendered highly flexible or pliant and capable of being glazed. During the drying of the paper the glucosides are deposited between the fibers in a state of infinitely-fine distribution and impart to the paper a close structure, which is of great advantage for printing. The fiber thus treatedthat is to say, saturated with saponin solution, for instance,and then dried readily absorbs printing-ink and is particularly well adapted to take ink from the forms.
It may be mentioned that glocoside solutions, more particularly saponin solutions, even when very weak have the capacity of holding pulverized insoluble substances in suspension for a very long time. This is of great importance when saponin is introduced into the rag-engine or vat. A saponin solution can, for instance, be directly mixed with a resin solution, so that an extremely finely divided resin emulsion is obtained in which neither lumps nor deposits are formed. This is also the case if a bath of saponin solution is used to which resin emulsion is added. In case the saponin is added to a solution or emulsion of resin or other equivalent material,.as fat, oil, Wax, &c., a proportion of one kilogram resin, &c., to fifty to six hundred grams saponin is preferably used. The finely-cut fiber of the pulp also remains in finely-divided suspension in the saponin solution, by which means the homogeneousness of the paper is considerably increased.
Having now particularly described and aseertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. Printing-paper containing a soluble glucoside such as saponin.
2. Printing-paper containing a soluble glucoside such as saponin in the proportion of one hundred kilograms paper-pulp to one hundred to two hundred grams saponin.
3. Printing-paper containing a soluble glucoside such as saponin introduced in combination with a resin emulsion containing fifty to six hundred grams saponin to one kilogram resin.
In testimony whereof I have signed my name to this specification in presence of two subscribing witnesses.
J OSEF VON SGHMAEDEL.
Witnesses:
ULYssns J. BYWATER, IVIATHILDE HELD.
US20392404A 1904-04-19 1904-04-19 Printing-paper. Expired - Lifetime US792932A (en)

Priority Applications (1)

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US20392404A US792932A (en) 1904-04-19 1904-04-19 Printing-paper.

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US20392404A US792932A (en) 1904-04-19 1904-04-19 Printing-paper.

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US792932A true US792932A (en) 1905-06-20

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US20392404A Expired - Lifetime US792932A (en) 1904-04-19 1904-04-19 Printing-paper.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683087A (en) * 1948-02-10 1954-07-06 American Cyanamid Co Absorbent cellulosic products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683087A (en) * 1948-02-10 1954-07-06 American Cyanamid Co Absorbent cellulosic products

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