US3485656A - Process for treating paperboard - Google Patents
Process for treating paperboard Download PDFInfo
- Publication number
- US3485656A US3485656A US602481A US3485656DA US3485656A US 3485656 A US3485656 A US 3485656A US 602481 A US602481 A US 602481A US 3485656D A US3485656D A US 3485656DA US 3485656 A US3485656 A US 3485656A
- Authority
- US
- United States
- Prior art keywords
- borax
- paperboard
- polyvinyl alcohol
- wax
- board
- 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
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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/18—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising waxes
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/72—Coated paper characterised by the paper substrate
- D21H19/76—Coated paper characterised by the paper substrate the substrate having specific absorbent properties
- D21H19/78—Coated paper characterised by the paper substrate the substrate having specific absorbent properties being substantially impervious to the coating
Definitions
- This invention relates to the production of an improved Waxed carton which is particularly suitable for packaging frozen foods and the like.
- Borax is available as either 5-mol or 10-mol, designating whether 5 or 10 mols of Water of crystallization are combined with sodium tetraborate. On a chemically equivalent base (78.4 pounds of 5-mol:100 pounds of 10-mol). Either grade of borax may be used.
- Polyvinyl alcohol is available in a range of polymers of varying solution viscosities and degree of hydrolysis, and is provided by hydrolyzing polyvinyl acetate polymers, the percentage of available acetate groups replaced by hydroxyl groups describing the degree of hydrolysis.
- the polyvinyl alcohol of highest viscosity and greatest degree of hydrolysis will be most efficient for the surface treatment of paperboard in accordance with my invention.
- High viscosity slows down polyvinyl alcohol penetration and a fully hydrolyzed polyvinyl alcohol reacts more extensively than a partially hydrolyzed polyvinyl alcohol.
- Vinol No. 165 manufactured by the Air Reduction Company.
- the F. viscosity of the polyvinyl alcohol may range from 2 up to 20,000 cps. depending on the grade and concentration of polyvinyl alcohol, but we prefer to utilize polyvinyl alcohol having a 95 F. viscosity of between about 20 and 200 cps.
- the viscosity can be kept at the desired level by controlling the pH of the solution, by use of phosphoric acid, for example, so that it is about 7 or below.
- aqueous solution of Technical Granular Borax ranging in concentration from about 0.5 to 20%, preferably 25-30%, and applying it to the surface of the paperboard by any conventional method, at the calenders.
- the treatment at the calenders is immediately followed by an application of an aqueous solution of polyvinyl alcohol, suitably by use of a trailing blade.
- concentration of the polyvinyl alcohol may vary over a wide range, for instance, from about 0.5% to about 20%, depending on the amount of holdout desired; I have obtained very good results using a 2-3% aqueous solution.
- borax solution is applied most satisfactorily by means of a calendar roll. Attempts to apply borax at the size press we have found result in the destruction of internal sizing because of excessive penetration of the borax solution. With internal sizing destroyed the paperboard is difiicult to dry and excessive amounts of subsequently applied calender solutions soak into the sheet.
- the borax solution is applied to paperboard which has been previously coated with starch, and/ or clay. The precoat (starch or clay over starch) cuts down penetration of the borax solution. The surface finish at the calender is also better than at the size press to further minimize borax solution penetration.
- the polyvinyl alcohol solution is applied to the board surface immediately after the calender application of the borax solution and while the borax solution is still wet, excess solution being removed preferably by means of a trailing blade, or by an air doctor or blade. Because the polyvinyl alcohol is applied while the borax solution is still wet, the polyvinyl alcohol mixes with the borax to cause gelling to take place on the paperboard surface and before it is permitted to migrate. There is thus produced a gel network on the board surface which bridges all large surface pores and provides a highly desirable level coating.
- the thus treated paperboard may then be printed on its clay coated side and/or cut and passed through any conventional waxing equipment which requires either water baths or water curtains to chill and set the wax.
- the outstanding characteristic of our coating lies in its ability to receive and maintain the Wax on the surface in a continuous film, thereby preventing negative pressures which are developed through expansion of water and gases by the heat of application (of the wax), from forcing water into the sheet resulting in a limp and inferior carton.
- wax we mean to include all waxes both natural, petroleum and synthetic waxes as are conventionally used in coating paperboard and which are susceptible to the above described coating procedures.
- a process for treating a starch-sized paperboard which comprises, first applying to the board an aqueous solution of borax, then applying to the borax solution coated board While still wet with the borax solution, an
- a process in accordance with claim 1 wherein the amount of borax applied to the paperboard is from about 0.15 to about 0.25 pound of 10-mol borax per thousand square feet of paperboard.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US60248166A | 1966-12-19 | 1966-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3485656A true US3485656A (en) | 1969-12-23 |
Family
ID=24411517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US602481A Expired - Lifetime US3485656A (en) | 1966-12-19 | 1966-12-19 | Process for treating paperboard |
Country Status (1)
Country | Link |
---|---|
US (1) | US3485656A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5039560A (en) * | 1989-05-26 | 1991-08-13 | Sweetheart Cup Company | Method for producing high gloss cup |
US20060065161A1 (en) * | 2004-06-24 | 2006-03-30 | Miller Gerald D | Substrate coating compositions and their use |
US20100304116A1 (en) * | 2009-06-01 | 2010-12-02 | Polymer Ventures, Inc. | Grease resistant coatings, articles and methods |
US20110008619A1 (en) * | 2009-06-01 | 2011-01-13 | Polymer Ventures, Inc. | Polyol Coatings, Articles, and Methods |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439108A (en) * | 1943-09-11 | 1948-04-06 | Eastman Kodak Co | Coating with polyvinyl alcohol |
US2725306A (en) * | 1953-04-20 | 1955-11-29 | Gardner Board & Carton Co | Production of coated board for gloss ink printing and article produced thereby |
US2927865A (en) * | 1956-02-24 | 1960-03-08 | Crown Zellerbach Corp | Coated heat-sealable wrapper and process of making same |
US2949382A (en) * | 1958-02-28 | 1960-08-16 | Cons Water Power & Paper Co | Method of making printable coated paper |
US3112214A (en) * | 1962-10-24 | 1963-11-26 | Corn Products Co | Process for sizing cellulose sheets with a starch derivative bearing vicinalglycol groups |
US3251709A (en) * | 1961-05-29 | 1966-05-17 | Monsanto Co | Sized cellulosic paper |
US3285771A (en) * | 1962-12-21 | 1966-11-15 | Johnson & Johnson | Permanent attachment pressure sensitive adhesive tape |
-
1966
- 1966-12-19 US US602481A patent/US3485656A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439108A (en) * | 1943-09-11 | 1948-04-06 | Eastman Kodak Co | Coating with polyvinyl alcohol |
US2725306A (en) * | 1953-04-20 | 1955-11-29 | Gardner Board & Carton Co | Production of coated board for gloss ink printing and article produced thereby |
US2927865A (en) * | 1956-02-24 | 1960-03-08 | Crown Zellerbach Corp | Coated heat-sealable wrapper and process of making same |
US2949382A (en) * | 1958-02-28 | 1960-08-16 | Cons Water Power & Paper Co | Method of making printable coated paper |
US3251709A (en) * | 1961-05-29 | 1966-05-17 | Monsanto Co | Sized cellulosic paper |
US3112214A (en) * | 1962-10-24 | 1963-11-26 | Corn Products Co | Process for sizing cellulose sheets with a starch derivative bearing vicinalglycol groups |
US3285771A (en) * | 1962-12-21 | 1966-11-15 | Johnson & Johnson | Permanent attachment pressure sensitive adhesive tape |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5039560A (en) * | 1989-05-26 | 1991-08-13 | Sweetheart Cup Company | Method for producing high gloss cup |
US20060065161A1 (en) * | 2004-06-24 | 2006-03-30 | Miller Gerald D | Substrate coating compositions and their use |
US20100304116A1 (en) * | 2009-06-01 | 2010-12-02 | Polymer Ventures, Inc. | Grease resistant coatings, articles and methods |
US20110008619A1 (en) * | 2009-06-01 | 2011-01-13 | Polymer Ventures, Inc. | Polyol Coatings, Articles, and Methods |
US7972526B2 (en) * | 2009-06-01 | 2011-07-05 | Polymer Ventures, Inc. | Grease resistant coatings, articles and methods |
US8273435B2 (en) * | 2009-06-01 | 2012-09-25 | Polymer Ventures, Inc. | Polyol coatings, articles, and methods |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NATIONAL WESTMINSTER BANK PLC Free format text: SECURITY INTEREST;ASSIGNOR:CONTAINER CORPORATION OF AMERICA;REEL/FRAME:004858/0656 Effective date: 19860930 Owner name: CHEMICAL BANK Free format text: SECURITY INTEREST;ASSIGNOR:CONTAINER CORPORATION OF AMERICA;REEL/FRAME:004858/0656 Effective date: 19860930 Owner name: BANKERS TRUST COMPANY, 280 PARK AVENUE, NEW YORK, Free format text: SECURITY INTEREST;ASSIGNOR:CONTAINER CORPORATION OF AMERICA;REEL/FRAME:004858/0656 Effective date: 19860930 Owner name: MANUFACTURERS HANOVER TRUST COMPANY Free format text: SECURITY INTEREST;ASSIGNOR:CONTAINER CORPORATION OF AMERICA;REEL/FRAME:004858/0656 Effective date: 19860930 Owner name: BANK OF NOVA SCOTIA, THE Free format text: SECURITY INTEREST;ASSIGNOR:CONTAINER CORPORATION OF AMERICA;REEL/FRAME:004858/0656 Effective date: 19860930 |