US1925448A - Process for improving the transparency of glassine paper - Google Patents

Process for improving the transparency of glassine paper Download PDF

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Publication number
US1925448A
US1925448A US469346A US46934630A US1925448A US 1925448 A US1925448 A US 1925448A US 469346 A US469346 A US 469346A US 46934630 A US46934630 A US 46934630A US 1925448 A US1925448 A US 1925448A
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United States
Prior art keywords
paper
transparency
rolls
improving
solution
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Expired - Lifetime
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US469346A
Inventor
Julius E Kiefer
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TRANSCELLO PAPER Co
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TRANSCELLO PAPER Co
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Application filed by TRANSCELLO PAPER Co filed Critical TRANSCELLO PAPER Co
Priority to US469346A priority Critical patent/US1925448A/en
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Publication of US1925448A publication Critical patent/US1925448A/en
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H21/00Non-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
    • D21H21/14Non-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 characterised by function or properties in or on the paper
    • D21H21/26Agents rendering paper transparent or translucent
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/918Material abnormally transparent

Definitions

  • the invention relates to a process for improving the transparency of glassine paper.
  • Glassine paper is a smooth hard paper, and I find that byv merely coating such paper with a transparent liquid that the transparency of the paper itself is not greatly improved, but that in order to obtain the best effect, it is necessary to provide a process which contemplates a coating of both sides of the paper and an impregnation or penetration of the paper by the transparent liquid, such as a suitable resinous vsolution capable of penetrating the paper, and to this end the object of this invention is to provide a process wherein the paper to be treated is immersed in the bath of this solution for a sufiicient length of time to enable the solution to thoroughly penetrate and impregnate the paper, and then the paper so treated is run through a set of squeeze rolls held together under pressure 2 so as to remove the excess solution from the impregnated paper, and to further augment the impregnation of the paper with the solution, after which the paper is dried preferably under tension.
  • the transparent liquid such as a suitable resinous vsolution capable of penetrating the paper
  • the invention further consists of the method and steps of the method hereinafter set forth, and
  • the drawing shows more or less diagrammatically, an apparatus for carrying out the method embodying the invention.
  • the numeral 2 designates a suitable frame upon which the supply roll 3 for the glassine paper to be treated is mounted, as is also a tank 4 that may be adjusted up and down relative to the frame 2 by means not shown, and through which the paper is carried by running the same over guide rolls 5 and 6, the guide roll 6 being mounted on supporting arms '7 preferably adapted to be adjusted to different elevations in the tank so as to position the guide roll 6 at different distances from the bottom of the tank to thereby vary the length of travel of the paper through the bath 8 of treating material. From the drawing it will be noted that the paper from the supply roll travels over the roller 5 andthence around the roller 6 and is then carried up between two squeeze rolls 9 and 10.
  • These rolls are adapted through their bearings, to be brought practically in contact with each other, one of the rolls as 9 being cold chilled iron, and the other 10 a suitable rubber roll, whereby the paper passing through these rolls is subjected to the 7 pressure exerted between the rolls.
  • the treated paper is carried through a hood 11 over a suitable driven roll 12 and thence down around a guide roll 13 between guide rolls 14, and is wound up on a mandrel 15 which is adapted to move vertically in slotted guide brackets 16, the winding of the paper onto the mandrel 15 being efiected by a driven roll 17 connected by idler roll 18 with another roll 19, the rolls 17 and 19 thus being rotated in a clock-wise direction to wind up the finished paper on the -mandrel 15 by the frictional engagement between the paper as it is wound up with the rolls 17 and 19, the mandrel 15 being free to move up in the slotted bracket 16 as the size of the roll of finished paper increases.
  • a partition 20 is provided in the hood 11, and heated drying air is introduced into the hood in the direction shown by the arrow 21, passes upwardly to the top of the hood and thence returns on the other side and out through the opening 22.
  • the length of the hood is such that by the time the treated paper reaches the driven roll 12 it has become dried by the action of the air passing through the hood.
  • the solution 8 in the tank 4 is a solution preferably including a varnish gum or other suitable resinous substance of a'character and chemical composition capable of penetrating the glassine paper, the gum or other resinous substance being thinned out to this consistency by the use of a suitable solvent such as alcohol.
  • the paper during its travel through the bath is immersed therein for a suflicient period of time so as to enable the solution to thoroughly penetrate and impregnate the paper and then the paper so treated is carried through the squeeze rolls 9 and 10 which put pressure upon the same so as to remove the excess solution, from the treated paper, and further act to augment the impregnation of the paper with the solution.
  • This action of the squeeze rolls also has the efiect of leaving only a predetermined amount of the solution as a coating on both sides of the paper and this facilitates the drying of the same as the paper is passed through the drying chamber including the hood 11, and as previously 10o noted the treated paper does not come in contact with any surface until the surface of the paper is dry.
  • the length of the tank 4 and the depth at which the lower roll 6 is placed in the tank are so determined as to give a definite period of imm5 mersion depending upon the speed of the paper run therethrough to thoroughly saturate or impregnate the paper with the solution. It is also to be noted that the excess material taken off of the treated paper by the squeeze rolls 9 and 10 5 prove quit having eaenee flow over these rolls keeps them in a moist condition.

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Description

Sept. 5, 1933. J. E. KIEFER 1,925,448
PROCESS FOR IMPROVING THE TRANSPARENCY OF GLASSINE PAPER Filed July 21, 1930 1 g INVENTOR.
BY W W gzw vfl, EMA
ATTORNEY.
Patented Sept. 5, 1933 UNITED STATES PROCESS FOR IMPROVING THE TRANS- PARENCY OF GLASSINE PAPER Julius E. Kiei'er, Milwaukee, Wis.,.assignor to Transcello Paper Company, Milwaukee, Wis., a corporation of Wisconsin Application July 21, 1930. Serial No. 469,346
1 Claim.
The invention relates to a process for improving the transparency of glassine paper.
Glassine paper, as is well known, is a smooth hard paper, and I find that byv merely coating such paper with a transparent liquid that the transparency of the paper itself is not greatly improved, but that in order to obtain the best effect, it is necessary to provide a process which contemplates a coating of both sides of the paper and an impregnation or penetration of the paper by the transparent liquid, such as a suitable resinous vsolution capable of penetrating the paper, and to this end the object of this invention is to provide a process wherein the paper to be treated is immersed in the bath of this solution for a sufiicient length of time to enable the solution to thoroughly penetrate and impregnate the paper, and then the paper so treated is run through a set of squeeze rolls held together under pressure 2 so as to remove the excess solution from the impregnated paper, and to further augment the impregnation of the paper with the solution, after which the paper is dried preferably under tension.
The invention further consists of the method and steps of the method hereinafter set forth, and
more particularly defined by the claim at the conclusion hereof.
The drawing shows more or less diagrammatically, an apparatus for carrying out the method embodying the invention.
In the drawing the numeral 2 designates a suitable frame upon which the supply roll 3 for the glassine paper to be treated is mounted, as is also a tank 4 that may be adjusted up and down relative to the frame 2 by means not shown, and through which the paper is carried by running the same over guide rolls 5 and 6, the guide roll 6 being mounted on supporting arms '7 preferably adapted to be adjusted to different elevations in the tank so as to position the guide roll 6 at different distances from the bottom of the tank to thereby vary the length of travel of the paper through the bath 8 of treating material. From the drawing it will be noted that the paper from the supply roll travels over the roller 5 andthence around the roller 6 and is then carried up between two squeeze rolls 9 and 10. These rolls are adapted through their bearings, to be brought practically in contact with each other, one of the rolls as 9 being cold chilled iron, and the other 10 a suitable rubber roll, whereby the paper passing through these rolls is subjected to the 7 pressure exerted between the rolls.
From squeeze rolls 9 and 10 the treated paper is carried through a hood 11 over a suitable driven roll 12 and thence down around a guide roll 13 between guide rolls 14, and is wound up on a mandrel 15 which is adapted to move vertically in slotted guide brackets 16, the winding of the paper onto the mandrel 15 being efiected by a driven roll 17 connected by idler roll 18 with another roll 19, the rolls 17 and 19 thus being rotated in a clock-wise direction to wind up the finished paper on the -mandrel 15 by the frictional engagement between the paper as it is wound up with the rolls 17 and 19, the mandrel 15 being free to move up in the slotted bracket 16 as the size of the roll of finished paper increases.
A partition 20 is provided in the hood 11, and heated drying air is introduced into the hood in the direction shown by the arrow 21, passes upwardly to the top of the hood and thence returns on the other side and out through the opening 22. The length of the hood is such that by the time the treated paper reaches the driven roll 12 it has become dried by the action of the air passing through the hood.
The solution 8 in the tank 4 is a solution preferably including a varnish gum or other suitable resinous substance of a'character and chemical composition capable of penetrating the glassine paper, the gum or other resinous substance being thinned out to this consistency by the use of a suitable solvent such as alcohol.
The paper during its travel through the bath is immersed therein for a suflicient period of time so as to enable the solution to thoroughly penetrate and impregnate the paper and then the paper so treated is carried through the squeeze rolls 9 and 10 which put pressure upon the same so as to remove the excess solution, from the treated paper, and further act to augment the impregnation of the paper with the solution. This action of the squeeze rolls also has the efiect of leaving only a predetermined amount of the solution as a coating on both sides of the paper and this facilitates the drying of the same as the paper is passed through the drying chamber including the hood 11, and as previously 10o noted the treated paper does not come in contact with any surface until the surface of the paper is dry. The length of the tank 4 and the depth at which the lower roll 6 is placed in the tank are so determined as to give a definite period of imm5 mersion depending upon the speed of the paper run therethrough to thoroughly saturate or impregnate the paper with the solution. It is also to be noted that the excess material taken off of the treated paper by the squeeze rolls 9 and 10 5 prove quit having eaenee flow over these rolls keeps them in a moist condition.
What I claim as my invention is: The methed of treating glassine paper to imthe transparency thereof which consists in r. the paper through a bath of transparent w tter in solution to cause
US469346A 1930-07-21 1930-07-21 Process for improving the transparency of glassine paper Expired - Lifetime US1925448A (en)

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