WO2009108506A1 - Papier coloré avec pénétration de teinte contrôlée - Google Patents

Papier coloré avec pénétration de teinte contrôlée Download PDF

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Publication number
WO2009108506A1
WO2009108506A1 PCT/US2009/033856 US2009033856W WO2009108506A1 WO 2009108506 A1 WO2009108506 A1 WO 2009108506A1 US 2009033856 W US2009033856 W US 2009033856W WO 2009108506 A1 WO2009108506 A1 WO 2009108506A1
Authority
WO
WIPO (PCT)
Prior art keywords
coloring
paper
product
formulation
coated
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.)
Ceased
Application number
PCT/US2009/033856
Other languages
English (en)
Inventor
Vladislav A. Babinsky
Bruce W. Babcock
Robinson C. Claytor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WestRock MWV LLC
Original Assignee
Meadwestvaco Corp
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 Meadwestvaco Corp filed Critical Meadwestvaco Corp
Priority to US12/918,093 priority Critical patent/US20100314060A1/en
Priority to DE112009000401T priority patent/DE112009000401T5/de
Publication of WO2009108506A1 publication Critical patent/WO2009108506A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • D21H21/14—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 characterised by function or properties in or on the paper
    • D21H21/28—Colorants ; Pigments or opacifying agents
    • 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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate

Definitions

  • Paper or paperboard used in high-end packaging applications commonly have high contrasts between two sides of the sheets.
  • a contrast may be with black or dark color at one side of the sheet and white or a significantly lighter color on the opposite side.
  • this premium colored paper is produced by laminating on one side of the black colored paper with metallic foil.
  • Colored paper is commonly prepared by adding coloring agents, such as dyes and pigments, into paper pulps in the wet-end of papermaking process prior to a formation of paper sheet.
  • coloring agents such as dyes and pigments
  • This process of preparing colored paper has many drawbacks.
  • Coloring pigments are generally water-insoluble; therefore, alum and/or retention aids are required to retain the pigments in the sheet.
  • poor adhesion of the coloring pigments on paper pulps results in inferior color fastness performance.
  • U.S. Patent No. 5,131,981 discloses a process for wet-end coloring paper with coloring pigments and color- fixing agents, wherein the pigment and color- fixing agent are added simultaneously to the paper pulps to be colored.
  • Cationic compounds are used a color- fixing agents to enhance the adhesion of coloring pigments onto the paper pulps.
  • Adding coloring dyes into paper pulps causes coloration of the process water, creating environmental and other process difficulties. The coloration is throughout the thickness of paper; therefore, a high level of coloring agents is needed. This is even if color is only required at the surface of the paper, leading to an unnecessary cost.
  • a large amount of paper is produced for each papermaking process run.
  • a minimum amount the paper mill generated from each run is much greater than the typical demand for high-end colored paper. As a result, the paper converter is burdened with a large inventory of unused colored paper, or the paper mill will not produce colored paper until the demand for minimum amount for each run is met.
  • Colored paper may be produced by applying coloring formulation onto the surface of paper after the paper is formed.
  • coloring formulation As stated in PCT Publication No. WO 2007/128077, this process provides colored paper with quality suitable for packaging applications, but unfortunately, suffers severely from its high cost.
  • this process presents further drawback.
  • coloring agents penetrate into the interior of paper and can interfere with the color on the opposite side of the paper. This drawback is particularly severe when white or lighter color is applied to the paper first, followed by black or dark color on the opposite side. The black or dark coloring agents may penetrate into paper and reduce the brightness on the opposite side being coated with white or lighter coloring agent.
  • the premium colored paper for high-end packaging applications is typically produced by (a) dying the paper pulps in the wet end of the papermaking process with black or darker coloring pigment, (b) forming colored paper sheet for the dyed paper pulps, (c) rolling the resulting colored paper sheet off the papermaking process, (d) transferring and (e) rewinding the colored sheet for a foil lamination process or an off-line coating with white or lighter coloring formulation.
  • This state of arts process is labor- and time-consuming, complicated, and high cost.
  • a premium colored paper having high contrast suitable for high-end packaging applications is produced through a controlled penetration of a coloring formulation through the paper.
  • the paper is coated on a first side with a first coloring formulation.
  • a second coloring formulation is applied to a second side (i.e. opposite side) of the paper such that the coloring agent in the second coloring formulation penetrates through the paper sheet but does not significantly interfere with the color or brightness on the first coated side of paper.
  • the first coloring formulation may be applied on the paper on-line during papermaking process.
  • FIG. 1 shows one embodiment of the disclosed method of producing a premium colored paper having high contrast for high-end packaging applications.
  • the disclosed method of producing a colored paper-based product comprises steps of:
  • FIG. 1 shows one embodiment of the disclosed method of producing a premium colored paper having high contrast suitable for high-end packaging applications.
  • a paper-based substrate 100 having a 101 and a second side 102.
  • a first coloring formulation is applied onto the 101 side of the paper, resulting in a whiteness L * value of Ll for the coated 101 side.
  • the uncoated second side 102 has a whiteness L * value of L2.
  • the second coloring formulation is subsequently applied onto the 102 side of the substrate, giving a double-side color-coated paper sheet characterized by whiteness L * values of the coated 101 and 102 side of L3 and L4, respectively.
  • the resulting premium colored paper has Ll more than 8 points higher than L3 and L2 at least 30 points higher than L4, wherein the whiteness L* value is determined using CIE L*a*b* color specification having D65 Illuminant lamp and at 10 degree observer.
  • the second coloring agent in the second coloring formulation penetrates into the treated paper in a controlled manner such that a gradual decrease of the second color intensity from the second coated side to the first coated side may be achieved.
  • the penetration of the second coloring agent in the second coloring formulation may be controlled such that the treated paper is colored throughout its thickness or only partially with the second coloring agent.
  • the second coloring agent may color from about 10% to about 100% of the thickness of the treated paper.
  • the paper-based substrate is first coated on the first side with a white or light-coloring formulation. Then, a black or dark- coloring formulation is applied to a second side (i.e. opposite side) of the paper such that the coloring agent in the black or dark-coloring formulation penetrates through the paper sheet but does not significantly interfere with the color or brightness of the first coated side of paper.
  • the colored paper having the first side coated with the white or light-coloring formulation may be produced on-line during papermaking process.
  • the white or light-coloring formulation is a clay-based coating, such as that commonly used in the papermaking industry.
  • the paper-based substrate is coated on the first side with a clay coating formulation on-line during the papermaking process to provide one-side clay coated paper.
  • a black or dark-coloring formulation is then applied to an uncoated side of the resulting one-side clay coated paper.
  • the second coloring formulation comprises a coloring agent and a surfactant in such a proportion that the coloring agent may controllably penetrate through the paper sheet without a significant interference with the color or brightness on the other side of the paper.
  • the surfactant is a critical component in controlling the penetration of the coloring agent in the second coloring formulation into the paper sheet.
  • the ratio of the coloring agent and the surfactant in the second coloring formulation may be optimized to affect minimum interference with the color or brightness on the other side of the paper. This ratio may be dependent on many factors, such as the thickness of the paper-based substrate, the applied colors, the type of fiber pulps used in the paper-based substrate, and the particularly type of end-use packaging applications. Therefore, there is a range of the ratio of the coloring agent and the surfactant in the operable, second coloring formulations.
  • the second coloring formulation comprises, based on weight of the formulation:
  • the second coloring formulation comprises, based on weight of the formulation: (a) from about 1% to about 10% by weight of a coloring agent; and
  • Surfactants suitable for the present disclosure may be anionic, cationic, nonionic, amphoteric surfactants, and combinations thereof.
  • the surfactants include, but are not limited to, polyalkylene glycol, polypropylene oxide/polyethylene oxide copolymers, fatty acid, and fatty derivative-based surfactants.
  • the coloring formulation comprises a coloring agent and a surfactant, and excludes a binder. Without any intent to adhere to any theory, it seems that the binder inhibits the penetration of the coloring agent into the paper interior.
  • the coloring formulations may be applied onto the paper-based substrate by any known application methods. These include, but are not limited to, size press application, brushing, spraying, roll coating, rod-coatings, dipping, spreading, air knife coating, curtain coating, and combinations thereof.
  • Bleach paperboard was used as a paper-based substrate.
  • a clay coating formulation was applied to one side of the paperboard.
  • the resulting clay-coated paperboard is then divided into two groups. The first group is retained as control.
  • a black coloring formulation containing about 2% weight of surfactant and about 5% weight of black coloring agent was coated onto the uncoated side to afford two-side colored coated paperboard.
  • the caliper, color and shade, and surface smoothness were tested for the disclosed two-side colored coated paperboard and for the control clay-coated paperboard.
  • the caliper or thickness of the paperboard was measured according to the test Standard TAPPI T 411. Two types were used to determine the surface smoothness of the paperboard: the Parker Print Surf (PPS) test according the test standard TAPPI 555 and the Sheffield test according the test standard TAPPI 538.
  • PPS Parker Print Surf
  • the color and shade of the paperboard were determined for each side of the tested paperboard using the CIE L*a*b* color specification.
  • the a* value represents the green- red/magenta color axis, wherein a* of negative values indicate green while positive values indicate magenta.
  • the b* value represent the blue-yellow color axis, wherein b* of negative values indicate blue and positive values indicate yellow.
  • the CIE L*a*b* color of the paperboard was tested at 10 degree Observer and the D65 Illuminant was used as a lamp source. Each side of each paperboard were tested three times for color measurment to obtain average L*, a *, and b * values .
  • control paperboard The properties of the control paperboard were showed in TABLE 1, and those of disclosed two-side colored coated paperboard were shown in TABLE 2.
  • the CIE L*a*b* color of the clay-coated side of the control paperboard was compared to that of the clay- coated side of the disclosed paperboard.
  • the CIE L*a*b* color of the uncoated side of the control paperboard was compared to the side of the disclosed paperboard coated with the black coloring formulation.
  • the L*, a*, and b* values reduced significantly confirming a substantial change in the shade and color.
  • the whiteness L * value for the side of the disclosed paperboard coated with the black coloring formulation (L4) was 66 point lower than the whiteness L * value of the uncoated side of the control clay-coated paperboard (L3).
  • the whiteness L* values of the clay-coated side of disclosed paperboard (L2) was about the same as that of the clay-coated side of the control paperboard (Ll). This indicates that the black coloring formulation penetrates into the internal of the paperboard to a certain level, but not through the paperboard. If the black coloring formulation had penetrated through the paperboard to the opposite clay-coated side, the whiteness L4 would reduce significantly.
  • TABLEs 1 and 2 show a control diffusion of the black coloring agent into the paperboard with minimum interferece with the shade or color on the clay-coated side.
  • the disclosed colored paperboard has a clay- coating on one side and a black color coating on the opposite. It is to be understood, however, that this example is merely one embodiment and not to limit the scopes of the present disclosure. [0030] While the invention has been described by reference to various specific embodiments, it should be understood that numerous changes may be made within the spirit and scope of the inventive concepts described. It is intended that the invention not be limited to the described embodiments, but will have full scope defined by the language of the following claims.

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  • Paper (AREA)

Abstract

L'invention porte sur un papier coloré de première qualité ayant un contraste élevé approprié pour des applications d'emballage haut de gamme, lequel papier est produit à travers une pénétration contrôlée d'une formulation de coloration à travers le papier. Le papier est revêtu, sur un premier côté, d'une première formulation de coloration. Ensuite, une seconde formulation de coloration est appliquée sur un second côté (c'est-à-dire le côté opposé) du papier, de telle sorte que l'agent colorant dans la seconde formulation de coloration pénètre à travers la feuille de papier mais n'interfère pas de façon significative avec la couleur ou la luminosité du premier côté revêtu du papier. Si on le souhaite, une première formulation de coloration peut être appliquée sur le papier en ligne pendant le traitement de fabrication de papier.
PCT/US2009/033856 2008-02-19 2009-02-12 Papier coloré avec pénétration de teinte contrôlée Ceased WO2009108506A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/918,093 US20100314060A1 (en) 2008-02-19 2009-02-12 Colored paper with controlled tint penetration
DE112009000401T DE112009000401T5 (de) 2008-02-19 2009-02-12 Koloriertes Papier mit gesteuerter Farbdurchdringung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2961008P 2008-02-19 2008-02-19
US61/029,610 2008-02-19

Publications (1)

Publication Number Publication Date
WO2009108506A1 true WO2009108506A1 (fr) 2009-09-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/033856 Ceased WO2009108506A1 (fr) 2008-02-19 2009-02-12 Papier coloré avec pénétration de teinte contrôlée

Country Status (5)

Country Link
US (1) US20100314060A1 (fr)
KR (1) KR20100124773A (fr)
DE (1) DE112009000401T5 (fr)
RU (1) RU2436883C1 (fr)
WO (1) WO2009108506A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107245902A (zh) * 2017-08-14 2017-10-13 桓仁广鑫科技有限责任公司 一种彩色环保纸的制造方法
CN109963983A (zh) * 2016-11-17 2019-07-02 维实洛克Mwv有限责任公司 耐油耐脂纸板

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD838037S1 (en) * 2017-04-26 2019-01-08 Ziggi Proizvodnja In Trgovina D.O.O. Cigarette paper
USD1107298S1 (en) 2023-09-11 2025-12-23 ZIGGI d.o.o. Case for cigarette paper with paper

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US3775353A (en) * 1971-11-05 1973-11-27 Westvaco Corp Blushed polystyrene pigment
EP0947348A2 (fr) * 1998-03-31 1999-10-06 Canon Kabushiki Kaisha Milieu d'enregistrement et procédé d'enregistrement par jet d'encre l'utilisant
EP1464484A1 (fr) * 2001-12-10 2004-10-06 Dai Nippon Printing Co., Ltd. Papier decoratif
US20050178514A1 (en) * 2002-04-16 2005-08-18 Graham Pring Kaolin pigment having high brightness and narrow particle size distribution and method of preparation therefor
WO2007048878A1 (fr) * 2005-10-26 2007-05-03 Dryad Ltd Oy Papier multicouche et son procede de preparation
WO2007101203A2 (fr) * 2006-02-28 2007-09-07 Evonik Degussa Corporation Papier de couleur et substrats enduits aux performances d'impression améliorées

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775353A (en) * 1971-11-05 1973-11-27 Westvaco Corp Blushed polystyrene pigment
EP0947348A2 (fr) * 1998-03-31 1999-10-06 Canon Kabushiki Kaisha Milieu d'enregistrement et procédé d'enregistrement par jet d'encre l'utilisant
EP1464484A1 (fr) * 2001-12-10 2004-10-06 Dai Nippon Printing Co., Ltd. Papier decoratif
US20050178514A1 (en) * 2002-04-16 2005-08-18 Graham Pring Kaolin pigment having high brightness and narrow particle size distribution and method of preparation therefor
WO2007048878A1 (fr) * 2005-10-26 2007-05-03 Dryad Ltd Oy Papier multicouche et son procede de preparation
WO2007101203A2 (fr) * 2006-02-28 2007-09-07 Evonik Degussa Corporation Papier de couleur et substrats enduits aux performances d'impression améliorées

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109963983A (zh) * 2016-11-17 2019-07-02 维实洛克Mwv有限责任公司 耐油耐脂纸板
CN107245902A (zh) * 2017-08-14 2017-10-13 桓仁广鑫科技有限责任公司 一种彩色环保纸的制造方法

Also Published As

Publication number Publication date
KR20100124773A (ko) 2010-11-29
RU2436883C1 (ru) 2011-12-20
US20100314060A1 (en) 2010-12-16
DE112009000401T5 (de) 2010-12-30

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