EP1216325B1 - Transparent paper and method for the production thereof - Google Patents

Transparent paper and method for the production thereof Download PDF

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Publication number
EP1216325B1
EP1216325B1 EP00958252A EP00958252A EP1216325B1 EP 1216325 B1 EP1216325 B1 EP 1216325B1 EP 00958252 A EP00958252 A EP 00958252A EP 00958252 A EP00958252 A EP 00958252A EP 1216325 B1 EP1216325 B1 EP 1216325B1
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EP
European Patent Office
Prior art keywords
transparent
layer
paper according
transparent paper
fibers
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.)
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EP00958252A
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German (de)
French (fr)
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EP1216325A1 (en
Inventor
Detlef Rhodius
Jürgen Graumann
Dirk Hinzmann
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Heinrich August Schoeller Sohne & Co Kg GmbH
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Heinrich August Schoeller Sohne & Co Kg GmbH
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Priority claimed from DE19942989A external-priority patent/DE19942989A1/en
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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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/06—Vegetable or imitation parchment; Glassine paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/506—Intermediate layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18—Highly hydrated, swollen or fibrillatable fibres
    • 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
    • D21H21/285—Colorants ; Pigments or opacifying agents insoluble
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets

Definitions

  • the invention relates to a transparent paper and a method for Production of a transparent paper.
  • Transparent papers consist of densely packed, highly ground Fibers, such as in Wolfgang Walenski's "Paper Book", Verlagp + Hydr, 1994 and 1999, Itzehoe, Germany on page 122 explained. They are, for example, from JP 03 216307 A, from WO 85 03316 A and known from US 3,839,144.
  • JP 03 uses 216307 A a glassine enriched with fillers, i.e. highly satined Tracing paper to form prepreg.
  • WO 85 03316 A and the US 3,839,144 damage with paper properties.
  • WO 85 03316 A strikes WO 85 03316 A before, on conventional paper a layer of high apply ground fibers to improve the surface properties affect, however, making a paper that is transparent in its entirety cannot be provided.
  • US 3,839,144 proposes a mixture of highly ground fibers and other fibers use to influence the paper properties in such a way that received a less densely packed paper with good eraser properties becomes. On the other hand, such papers lose their transparent ones Characteristics.
  • backlit areas that are colored, graphical or otherwise Are designed to provide, so far one is so far on the Use of plastic films, usually referred to as "backlight films", instructed since all known tracing papers go through different phases possessing basic structure, which when shining through with the actual color or graphic representation mixed and on this Way a brilliant and sharp reproduction of the on the Transparent paper located representation prevented.
  • the object of the invention is a transparency To provide, which is suitable as a backlit medium.
  • a further object of the invention is to provide a method for To specify the manufacture of such a transparent paper.
  • the object is achieved by a transparent paper according to claim 1.
  • the invention is based on the surprising finding that the Transparent layer fillers can be added without the Significantly affect transparency, the term "transparent” here in the sense of "translucent” (not necessarily transparent) is used.
  • transparent here in the sense of "translucent” (not necessarily transparent) is used.
  • the use of fillers makes it possible for the first time otherwise usually visible with tracing paper Conceal irregularities because the fillers block the light passing through reflect diffusely, which leads to a desired reduction in Transparency and especially to a homogeneous frosted glass Review leads.
  • the fibers contain the transparent layer of sulfate pulp fibers, especially long-fiber ones Sulphate pulp fibers and fillers with a total weight of 1 to 6 % of the total weight of the fibers contained in the transparent layer.
  • Silicates in particular silicates from the group of precipitated calcium, aluminum, calcium aluminum and sodium aluminum silicates as well as a lead silicate are particularly proven.
  • the use of these fillers results in two phases in paper, with the Interfaces of the phases to a refraction of the light and due to the Silicate structure and the size of the fillers for a diffuse scattering of the Transmitted light comes so that the tracing paper when illuminated by "milky" appears evenly behind.
  • the fillers act like water-insoluble, compared to the other ingredients of Transparent layer with chemically neutral behavior. with these none Bonds incoming pigments of the smallest particle size and are in the Usually white. However, in order to achieve special effects colored pigments are used. It has proven to be particularly useful proven when the grain size of the pigments is between 0.5 and 2.0 ⁇ m.
  • the refractive index of the pigments is approximately in the order of magnitude of Refractive index of the fibers of the transparent layer, that is Usually between 1.5 and 1.6, with cellulose one Refractive index of 1.53 and the pigments from the aforementioned Materials have a refractive index of 1.56 to 1.57, and is Silicate concentration based on the pulp mass use about 2 to 5%, so you get a transparent paper with a transparency of 30 to 40%, which is excellent for use in light boxes and the like suitable.
  • the paper weight of the transparent layer should be in the range from 100 to 250 g / m 2 , preferably between approximately 150 and 200 g / m 2 , so that the paper is stable enough on the one hand, but on the other hand it is also elastic enough to be processed, for example, by means of commercially available ink steel printers and plotters.
  • a Ink receiving layer may be provided by the transparency layer will be carried. This makes it possible for the applied liquid to run Color, especially when printing with inkjet printers reduce or avoid entirely. It can also be a strong one Waviness of the transparency layer when absorbing moisture avoid. In this way, a printed image with sharp contours can be created provide, since the colors are less blurred, under the term "Color" is understood here as black.
  • the Ink receiving layer for receiving inks from inkjet printers be trained. But it can also be used for screen printing or airbrush processes be interpreted.
  • an ink receiving layer which is also called a color receiving layer could refer to, for example, a mixture of partially saponified Polyvinyl alcohol and / or polyvinyl pyrrolidone, especially in the ratio of 9: 1, especially proven.
  • a borax-containing binder has proven to be useful.
  • Transparent layer on a complex formation between the Polyvinyl alcohol and the borax which is in the acidic pH range Forms polyvinyl alcohol-boric acid monodiol complex.
  • Polyvalent alcohols are suitable for fixing the polyvinyl alcohol Metal ions from IV. To VI. Main group of the periodic table in particular. Even low concentrations lead to gelation of the Polyvinyl alcohol.
  • such an ink receiving layer is also independent of the other properties of the transparency layer or Transparent paper for printing on paper layers with extreme high fiber packs is suitable.
  • such a layer can also be used advantageously with conventional transparent papers.
  • the ink receiving layer later load-bearing paper layer with tightly packed fibers from a high ground pulp mass with the addition of water-insoluble Pigments with a proportion between 2 and 5 percent by weight based on the pulp is made.
  • partially saponified Polyvinyl alcohol and polyvinyl pyrrolidone are an ink receiving fluid mixed, which is finally added to the transparent layer a borax-containing binder is applied.
  • the polymer solution which acts as an ink receiving layer, can also be used usual coating processes such as, for example, doctor blades, blades and other common coating processes on the tracing paper be applied.
  • the machine can be used to coat the transparent layer with the Ink receiving layer coating speeds up to 100 m / min can be reached.
  • the tracing paper consists of at least two layers, namely a transparent layer and an ink or Color absorption layer is there and that the tracing paper transparency reducing fillers are added.

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  • Paper (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Description

Die Erfindung betrifft ein Transparentpapier und ein Verfahren zur Herstellung eines Transparentpapieres.The invention relates to a transparent paper and a method for Production of a transparent paper.

Transparentpapiere bestehen aus dicht gepackten, hoch ausgemahlenen Fasern, wie beispielsweise in dem "PapierBuch" von Wolfgang Walenski, Verlag Beruf + Schule, 1994 und 1999, Itzehoe, Deutschland auf Seite 122 erläutert. Sie sind beispielsweise aus der JP 03 216307 A, aus der WO 85 03316 A und aus der US 3,839,144 bekannt. Hierbei nutzt die JP 03 216307 A ein mit Füllstoffen angereichertes Pergamin, also hochsatiniertes Transparentpapier zum Ausformen von Prepreg. Die WO 85 03316 A und die US 3,839,144 beschädigen sich mit Papiereigenschaften. Hierbei schlägt die WO 85 03316 A vor, auf übliches Papier eine Schicht aus hoch ausgemahlenen Fasern aufzutragen, um die Uberflächeneigenschaften zu beeinflussen, wodurch jedoch ein in seiner Gesamtheit transparentes Papier nicht bereitgestellt werden kann. Andererseits schlägt die US 3,839,144 vor, eine Mischung aus hoch ausgemahlenen Fasern und anderen Fasern zu verwenden, um die Papiereigenschaften dahingehend zu beeinflussen, dass ein weniger dicht gepacktes Papier mit guten Radiereigenschaften erhalten wird. Andererseits verlieren derartige Papiere ihre transparenten Eigenschaften.Transparent papers consist of densely packed, highly ground Fibers, such as in Wolfgang Walenski's "Paper Book", Verlag Beruf + Schule, 1994 and 1999, Itzehoe, Germany on page 122 explained. They are, for example, from JP 03 216307 A, from WO 85 03316 A and known from US 3,839,144. Here JP 03 uses 216307 A a glassine enriched with fillers, i.e. highly satined Tracing paper to form prepreg. WO 85 03316 A and the US 3,839,144 damage with paper properties. Here strikes WO 85 03316 A before, on conventional paper a layer of high apply ground fibers to improve the surface properties affect, however, making a paper that is transparent in its entirety cannot be provided. On the other hand, US 3,839,144 proposes a mixture of highly ground fibers and other fibers use to influence the paper properties in such a way that received a less densely packed paper with good eraser properties becomes. On the other hand, such papers lose their transparent ones Characteristics.

Um von hinten beleuchtete Flächen, die farbig, graphisch oder auf andere Weise ausgestaltet sind, bereitzustellen, ist man insofern bislang auf den Einsatz von Kunststoffolien, meist als "Backlight Folien" bezeichnet, angewiesen, da alle bekannten Transparentpapiere eine verschiedene Phasen aufweisende Grundstruktur besitzen, die sich beim Durchscheinen mit der eigentlichen Farbe bzw. graphischen Darstellung vermengt und auf diese Weise eine brilliante und konturscharfe Wiedergabe der auf dem Transparentpapier befindlichen Darstellung verhindert.To backlit areas that are colored, graphical or otherwise Are designed to provide, so far one is so far on the Use of plastic films, usually referred to as "backlight films", instructed since all known tracing papers go through different phases possessing basic structure, which when shining through with the actual color or graphic representation mixed and on this Way a brilliant and sharp reproduction of the on the Transparent paper located representation prevented.

Davon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein Transparent bereitzustellen, welches sich als von hinten beleuchtetes Medium eignet. Des weiteren liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zur Herstellung eines solchen Transparentpapieres anzugeben.Proceeding from this, the object of the invention is a transparency To provide, which is suitable as a backlit medium. Of a further object of the invention is to provide a method for To specify the manufacture of such a transparent paper.

Die Aufgabe wird gelöst durch ein Transparentpapier gemäβ Anspruches 1. The object is achieved by a transparent paper according to claim 1.

Die Erfindung beruht auf der überraschenden Erkenntnis, dass der Transparentschicht Füllstoffe beigefügt werden können, ohne die Transparenz wesentlich zu beeinträchtigen, wobei der Begriff "transparent" hier im Sinne von "durchscheinend" (nicht-notwendigerweise durchsichtig) verwendet wird. Der Einsatz der Füllstoffe ermöglicht es erstmals, die ansonsten bei Transparentpapieren normalerweise sichtbaren Unregelmäßigkeiten zu kaschieren, da die Füllstoffe das durchtretende Licht diffus reflektieren, was zu einer durchaus gewünschten Reduzierung der Transparenz und insbesondere zu einer homogenen milchglasartigen Durchsicht führt.The invention is based on the surprising finding that the Transparent layer fillers can be added without the Significantly affect transparency, the term "transparent" here in the sense of "translucent" (not necessarily transparent) is used. The use of fillers makes it possible for the first time otherwise usually visible with tracing paper Conceal irregularities because the fillers block the light passing through reflect diffusely, which leads to a desired reduction in Transparency and especially to a homogeneous frosted glass Review leads.

Bei einer bevorzugten Ausführungsform der Erfindung enthalten die Fasern der Transparentschicht Sulfat-Zellstoffasern, insbesondere langfaserige Sulfat-Zellstoffasern sowie Füllstoffe mit einem Gesamtgewicht von 1 bis 6 % des Gesamtgewichts der in der Transparentschicht enthaltenden Fasern.In a preferred embodiment of the invention, the fibers contain the transparent layer of sulfate pulp fibers, especially long-fiber ones Sulphate pulp fibers and fillers with a total weight of 1 to 6 % of the total weight of the fibers contained in the transparent layer.

Als Füllstoffe haben sich Silicate, insbesondere Silicate aus der Gruppe der gefällten Calcium-, Aluminium-, Calcium-Aluminium- und Natrium-Aluminium-Silicate sowie ein Bleisilicat besonders bewährt. Durch den Einsatz dieser Füllstoffe entstehen im Papier zwei Phasen, wobei es an den Grenzflächen der Phasen zu einer Brechung des Lichtes und aufgrund des Silicataufbaus sowie der Größe der Füllstoffe zu einer diffusen Streuung des Durchlichts kommt, so dass das Transparentpapier bei Beleuchtung von hinten gleichmäßig "milchig" erscheint. Die Füllstoffe wirken dabei wie wasserunlösliche, sich gegenüber den sonstigen Inhaltsstoffen der Transparentschicht chemisch neutral verhaltende. also mit diesen keine Bindungen eingehende Pigmente von kleinster Teilchengröße und sind im Regelfall weiß. Zur Erzielung besonderer Effekte können jedoch auch farbige Pigmente eingesetzt werden. Als besonders zweckmäßig hat es sich erwiesen, wenn die Korngröße der Pigmente zwischen 0.5 und 2,0 µm liegt.Silicates, in particular silicates from the group of precipitated calcium, aluminum, calcium aluminum and sodium aluminum silicates as well as a lead silicate are particularly proven. By the The use of these fillers results in two phases in paper, with the Interfaces of the phases to a refraction of the light and due to the Silicate structure and the size of the fillers for a diffuse scattering of the Transmitted light comes so that the tracing paper when illuminated by "milky" appears evenly behind. The fillers act like water-insoluble, compared to the other ingredients of Transparent layer with chemically neutral behavior. with these none Bonds incoming pigments of the smallest particle size and are in the Usually white. However, in order to achieve special effects colored pigments are used. It has proven to be particularly useful proven when the grain size of the pigments is between 0.5 and 2.0 µm.

Liegt der Brechungsindex der Pigmente ungefähr in der Größenordnung des Brechnungsindexes der Fasern der Transparentschicht, also Ublichehrlicherweise zwischen 1,5 und 1,6, wobei Zellulose einen Brechungsindex von 1,53 und die Pigmente aus den vorgenannten Materialien einen Brechungsindex von 1,56 bis 1,57 haben, und beträgt die Silicatkonzentration bezogen auf den Zellstoffmasseeinsatz etwa 2 bis 5 %, so erhält man ein Transparentpapier mit einer Transparenz von 30 bis 40 %, welches sich hervorragend zur Anwendung in Leuchtkästen und dergleichen eignet.The refractive index of the pigments is approximately in the order of magnitude of Refractive index of the fibers of the transparent layer, that is Usually between 1.5 and 1.6, with cellulose one Refractive index of 1.53 and the pigments from the aforementioned Materials have a refractive index of 1.56 to 1.57, and is Silicate concentration based on the pulp mass use about 2 to 5%, so you get a transparent paper with a transparency of 30 to 40%, which is excellent for use in light boxes and the like suitable.

Um eine gute Wasseraufnahmekapazität zu erreichen und das Transparentpapier gegen Wellenbildung und Knittern resistent zu machen, sollte das Papiergewicht der Transparentschicht, die sogenannte Grammage, im Bereich von 100 bis 250 g/m2, vorzugsweise zwischen etwa 150 und 200 g/m2 liegen, so dass das Papier einerseits stabil genug, andererseits aber auch elastisch genug ist, um zum Beispiel mittels handelsüblicher Tintenstahl-Drucker und -Plotter verarbeitet zu werden. In order to achieve a good water absorption capacity and to make the transparent paper resistant to wave formation and wrinkling, the paper weight of the transparent layer, the so-called grammage, should be in the range from 100 to 250 g / m 2 , preferably between approximately 150 and 200 g / m 2 , so that the paper is stable enough on the one hand, but on the other hand it is also elastic enough to be processed, for example, by means of commercially available ink steel printers and plotters.

Wegen der dichten Phaserpackung kann auf der Transparenzschicht eine Tintenaufnahmeschicht vorgesehen sein, die von der Transparenzschicht getragen wird. Hierdurch lässt sich ein Verlaufen von aufgebrachter flüssiger Farbe, insbesondere beim Bedrucken mittels Tintenstrahl-Druckern reduzieren bzw. zur Gänze vermeiden. Darüber hinaus lässt sich eine starke Wellenbildung der Transparenzschicht bei der Aufnahme von Feuchtigkeit vermeiden. Auf diese Weise lässt sich ein Druckbild mit scharfen Konturen bereitstellen, da die Farben dann weniger verlaufen, wobei unter dem Begriff "Farbe" hier auch schwarz verstanden wird.Because of the dense phaser packing, a Ink receiving layer may be provided by the transparency layer will be carried. This makes it possible for the applied liquid to run Color, especially when printing with inkjet printers reduce or avoid entirely. It can also be a strong one Waviness of the transparency layer when absorbing moisture avoid. In this way, a printed image with sharp contours can be created provide, since the colors are less blurred, under the term "Color" is understood here as black.

Im vorliegenden Zusammenhang ist der Begriff "Tinte" bzw. "Tintenaufnahmeschicht" in seiner allgemeinsten Form zu verstehen und umfasst jede Schicht, die geeignet ist, eine Farbe, Pigmente oder Tinten oder ähnliches in geeigneter Weise aufzunehmen und die nachteiligen Eigenschaften der Transparenzschicht zu vermindern. Insbesondere kann die Tintenaufnahmeschicht für eine Aufnahme von Tinten aus Tintenstrahl-Druckern ausgebildet sein. Sie kann aber auch für Siebdruck- oder Airbrush-Verfahren ausgelegt werden.In the present context, the term "ink" or To understand "ink receiving layer" in its most general form and includes any layer that is suitable, a color, pigments or inks or the like in a suitable manner and the disadvantageous To reduce properties of the transparency layer. In particular, the Ink receiving layer for receiving inks from inkjet printers be trained. But it can also be used for screen printing or airbrush processes be interpreted.

Als Tintenaufnahmeschicht, die man auch als Farbaufnahmeschicht bezeichnen könnte, hat sich beispielsweise eine Mischung aus teilverseiftem Polyvinylalkohol und/oder Polyvinylpyrrolidon, insbesondere im Verhältnis von 9:1, besonders bewährt. Um diese Schicht auf der Transparentschicht zu fixieren und gleichzeitig die Wasserfestigkeit gegen die bei üblichen Tintenstrahl-Druckern verwendeten Tinten zu verbessern, hat sich beispielsweise ein boraxhaltiges Bindemittel als zweckmäßig erwiesen. Dabei beruht dann die Fixierung der Tintenaufnahmeschicht auf der Transparentschicht auf einer Komplexbildung zwischen dem Polyvinylalkohol und dem Borax, wobei sich im sauren pH-Bereich ein Polyvinylalkohol-Borsäure-Monodiolkomplex ausbildet. Bei Verschiebung des pH-Wertes ins Alkalische entsteht ein Polyvinylalkohol-Borsäure-Diolkomplex. Zur Fixierung des Polyvinylalkohols eignen sich mehrwertige Metallionen der IV. bis VI. Hauptgruppe des Periodensystems insbesondere. Hier führen bereits geringe Konzentrationen zur Gelierung des Polyvinylalkohols.As an ink receiving layer, which is also called a color receiving layer could refer to, for example, a mixture of partially saponified Polyvinyl alcohol and / or polyvinyl pyrrolidone, especially in the ratio of 9: 1, especially proven. Around this layer on the transparent layer too fix and at the same time the water resistance against the usual Inkjet printers have been used to improve inks For example, a borax-containing binder has proven to be useful. there is then based on the fixation of the ink receiving layer Transparent layer on a complex formation between the Polyvinyl alcohol and the borax, which is in the acidic pH range Forms polyvinyl alcohol-boric acid monodiol complex. In the event of a shift of the pH in alkaline form a polyvinyl alcohol-boric acid-diol complex. Polyvalent alcohols are suitable for fixing the polyvinyl alcohol Metal ions from IV. To VI. Main group of the periodic table in particular. Even low concentrations lead to gelation of the Polyvinyl alcohol.

Es versteht sich, dass eine derartige Tintenaufnahmeschicht auch unabhängig von den übrigen Eigenschaften der Transparenzschicht bzw. der Transparentpapieres für ein Bedrucken von Papierschichten mit extrem hohen Faserpackungen geeignet ist. Insbesondere kann eine derartige Schicht auch bei üblichen Transparentpapieren vorteilhaft Verwendung finden.It is understood that such an ink receiving layer is also independent of the other properties of the transparency layer or Transparent paper for printing on paper layers with extreme high fiber packs is suitable. In particular, such a layer can also be used advantageously with conventional transparent papers.

Bei der Herstellung des Transparentpapieres kann zum Beispiel so vorgegangen werden, dass zunächst eine später die Tintenaufnahmeschicht tragende Papierschicht mit dicht gepackten Fasern aus einer hoch ausgemahlenen Zellstoffmasse unter Beifügung von wasserunlöslichen Pigmenten mit einem Anteil zwischen 2 und 5 Gewichtsprozent bezogen auf die Zellstoffmasse hergestellt wird. Sodann wird aus teilverseiftem Polyvinylalkohol und Polyvinylpyrrolidon ein Tintenaufnahmefluid angemischt, welches schließlich auf die Transparentschicht unter Beifügung eines boraxhaltigen Bindemittels aufgebracht wird.For example, in the manufacture of tracing paper be proceeded first that the ink receiving layer later load-bearing paper layer with tightly packed fibers from a high ground pulp mass with the addition of water-insoluble Pigments with a proportion between 2 and 5 percent by weight based on the pulp is made. Then partially saponified Polyvinyl alcohol and polyvinyl pyrrolidone are an ink receiving fluid mixed, which is finally added to the transparent layer a borax-containing binder is applied.

Dabei kann die als Tintenaufnahmeschicht wirkende Polymerlösung mit üblichen Beschichtunesverfahrcn wie zum Beispiel Rollrakel , Blade und anderen gängigen Beschichtungsverfahren auf das Transparentpapier aufgebracht werden. Je nach Art der verwendeten Beschichtungstechnik und - maschine können beim Beschichten der Transparentschicht mit der Tintenaufnahmeschicht Beschichtungsgeschwindigkeiten von bis zu 100 m/min erreicht werden.The polymer solution, which acts as an ink receiving layer, can also be used usual coating processes such as, for example, doctor blades, blades and other common coating processes on the tracing paper be applied. Depending on the type of coating technology used and - The machine can be used to coat the transparent layer with the Ink receiving layer coating speeds up to 100 m / min can be reached.

Im Rahmen des Erfindungsgedankens sind zahlreiche Abwandlungen und Weiterbildungen möglich, die sich zum Beispiel auf den Anteil und die Art der eingesetzten Füllstoffe sowie auf die Art und Zusammensetzung der als Tintenaufnahmeschicht wirkenden Schicht beziehen. Erfindungswesentlich ist jedenfalls, dass das Transparentpapier aus wenigstens zwei Schichten, nämlich einer Transparentschicht und einer Tinten- bzw. Farbaufnahmeschicht besteht und dass dem Transparentpapier transparenzreduzierende Füllstoffe beigemischt sind.Within the framework of the inventive concept, numerous modifications and Further training possible, which for example depends on the proportion and type of the fillers used and on the type and composition of the as Obtain the ink-receiving layer. Is essential to the invention in any case, that the tracing paper consists of at least two layers, namely a transparent layer and an ink or Color absorption layer is there and that the tracing paper transparency reducing fillers are added.

Claims (19)

  1. A transparent paper, which includes at least one transparent layer made of closely packed, highly milled fibers, characterized in that the transparent paper includes a tint-absorbing layer, that the transparent layer contains transparency-reducing fillers and that the transparent layer is a support layer for the absorbent tint-absorbing layer.
  2. The transparent paper according to claim 1, characterized in that the fibers of the transparent layer contain cellulose fibers, in particular, long-fiber sulfate cellulite fibers.
  3. The transparent paper according to claim 1 or 2, characterized in that the transparent layer contains fillers with an overall weight of up to 10 %, preferably from 1 to 6 %, of the overall weight of the fibers contained in the transparent layer.
  4. The transparent paper according to one of claims 1 through 3, characterized in that the fillers contain essentially one or more silicates, in particular, from the group of precipitated calcium-, aluminum-, calcium-aluminum-, sodium-aluminum-silicate or a lead-silicate.
  5. The transparent paper according to one of claims 1 through 4, characterized in that the fillers contain calcium carbonate and/or silicic acid and/or titanium oxide.
  6. The transparent paper according to one of claims 1 through 5, characterized in that the fillers contains water-insoluble pigments that are chemically neutral compared to the other contents of the transparent layer.
  7. The transparent paper according to claim 6, characterized in that the particle size of the pigments lies between 0.1 and 5 µm, preferably between 0.5 and 2.0 µm.
  8. The transparent paper according to claim 6 or 7, characterized in that the refraction index of the pigments lies in the order of magnitude of the refraction index of the fibers in the transparent layer.
  9. The transparent paper according to claim 8, characterized in that the refraction index of the fibers and the refraction index of the pigments lies between 1.5 and 1.6.
  10. The transparent paper according to one of claims 1 through 9, characterized in that the transparency of the transparent layer lies between 25 and 45 %, preferably between 30 and 40 %.
  11. The transparent paper according to one of claims 1 through 10, characterized in that the grammage of the transparent layer lies in the range from 100 to 250 g/m2, preferably between approximately 150 to 200 g/m2.
  12. The transparent paper according to one of claims 1 through 11, characterized in that the tint-absorbing layer contains partly-saponified poly-vinyl-alcohol and/or poly-vinyl-pyrrolidone, preferably in a ratio of 9 parts poly-vinyl-alcohol to 1 part poly-vinyl-pyrrolidone.
  13. The transparent paper according to one of claims 1 through 12, characterized in that the tint-absorbing layer is mounted onto the transparent layer with the addition of a binding agent.
  14. The transparent paper according to claim 13, characterized in that the binding agent is a complexing agent.
  15. The transparent paper according to one of claims 13 or 14, characterized in that the binding agent contains borax (Di-sodium-tetra-borate).
  16. The transparent paper according to claim 12, characterized in that the poly-vinyl-alcohol is fixed by means of polyvalent metallic ions of the IV to VI ancillary groups of the periodic system in the tint-absorbing layer.
  17. A method for making a transparent paper, in which a layer is made with closely packed fibers made from a highly milled cellulose amount with the addition of water-insoluble pigments and subsequently a layer of a tint-absorbing fluid is applied to the layer with closely packed fibers.
  18. The method according to claim 17, characterized in that the portion of the water-insoluble pigments amounts to 10 percent by weight with reference to the cellulose amount.
  19. The method according to claim 17 or 18, characterized in that the tint-absorbing fluid is applied to the layer with the addition of a binding agent.
EP00958252A 1999-09-09 2000-08-16 Transparent paper and method for the production thereof Expired - Lifetime EP1216325B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19942989A DE19942989A1 (en) 1999-09-09 1999-09-09 Transparent paper useful for back-lit applications, has transparent layer of tightly packed, highly milled fibers containing filler reducing transparency
DE19942989 1999-09-09
US21113300P 2000-06-13 2000-06-13
US211133P 2000-06-13
PCT/DE2000/002762 WO2001018312A1 (en) 1999-09-09 2000-08-16 Transparent paper and method for the production thereof

Publications (2)

Publication Number Publication Date
EP1216325A1 EP1216325A1 (en) 2002-06-26
EP1216325B1 true EP1216325B1 (en) 2004-05-19

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EP00958252A Expired - Lifetime EP1216325B1 (en) 1999-09-09 2000-08-16 Transparent paper and method for the production thereof

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EP (1) EP1216325B1 (en)
AU (1) AU6983800A (en)
DE (1) DE10082677D2 (en)
ES (1) ES2223572T3 (en)
WO (1) WO2001018312A1 (en)

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KR20160132429A (en) * 2014-03-13 2016-11-18 칼 프로이덴베르크 카게 Element for manipulating light

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WO2012105939A1 (en) * 2011-01-31 2012-08-09 Hewlett-Packard Development Company, L.P. Graphic medium and method of making same

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US1924573A (en) * 1932-01-19 1933-08-29 Brown Co Fibrous web for artificial leathers or the like
US3839144A (en) * 1970-09-21 1974-10-01 W Lounden Paper having 60{14 97 percent hydrated cellulosic fibers and 3{14 40 percent unhydrated cellulosic fibers
SE441109B (en) * 1984-01-19 1985-09-09 Svenska Traeforskningsinst PAPERS WITH IMPROVED FEATURES AND WAYS TO MAKE IT SAME
JPH07115352B2 (en) * 1990-01-23 1995-12-13 東レ株式会社 Prepreg manufacturing method
JPH0473298A (en) * 1990-07-13 1992-03-09 Mitsubishi Paper Mills Ltd Transparent paper for second original drawing
JPH05104848A (en) * 1991-10-15 1993-04-27 Sanyo Kokusaku Pulp Co Ltd Ink jet recording paper
JP3731906B2 (en) * 1994-02-09 2006-01-05 三菱製紙株式会社 Laminated transparent paper for ink jet
JP3518714B2 (en) * 1996-09-25 2004-04-12 三菱製紙株式会社 Transparent paper for inkjet recording

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160132429A (en) * 2014-03-13 2016-11-18 칼 프로이덴베르크 카게 Element for manipulating light
KR101922192B1 (en) * 2014-03-13 2018-11-26 칼 프로이덴베르크 카게 Element for manipulating light

Also Published As

Publication number Publication date
DE10082677D2 (en) 2002-02-14
WO2001018312A1 (en) 2001-03-15
AU6983800A (en) 2001-04-10
EP1216325A1 (en) 2002-06-26
ES2223572T3 (en) 2005-03-01

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