DE2406139A1 - POLYMER COATED PAPER - Google Patents

POLYMER COATED PAPER

Info

Publication number
DE2406139A1
DE2406139A1 DE19742406139 DE2406139A DE2406139A1 DE 2406139 A1 DE2406139 A1 DE 2406139A1 DE 19742406139 DE19742406139 DE 19742406139 DE 2406139 A DE2406139 A DE 2406139A DE 2406139 A1 DE2406139 A1 DE 2406139A1
Authority
DE
Germany
Prior art keywords
paper
polymer
sodium sulfate
coatings
backing
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.)
Pending
Application number
DE19742406139
Other languages
German (de)
Inventor
Thomas Jan Overthrow
Antony Jan Woodward
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.)
Arjo Wiggins Ltd
Original Assignee
Wiggins Teape Research and Development Ltd
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 Wiggins Teape Research and Development Ltd filed Critical Wiggins Teape Research and Development Ltd
Publication of DE2406139A1 publication Critical patent/DE2406139A1/en
Pending 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
    • D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • 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
    • D21H19/22—Polyalkenes, e.g. polystyrene
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
    • G03C1/79—Macromolecular coatings or impregnations therefor, e.g. varnishes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/85—Photosensitive materials characterised by the base or auxiliary layers characterised by antistatic additives or coatings
    • G03C1/853—Inorganic compounds, e.g. metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Description

Patentanwälte O L O 6 1 3Patent attorneys O L O 6 1 3

DlpL-lnq. R.D-tT2 sen. fr T W «-» ^ VDlpL-lnq. R.D-tT2 sen. for T W «-» ^ V

DlpMn-i. K. LAMPRECHTDlpMn-i. K. LAMPRECHT

Dr.-Ing. R.BEETZjr,
«Mönchen 22, Steinsdorfetr. 1·Dr.-Ing. R.BEETZjr,
«Mönchen 22, Steinsdorfetr. 1·

078-22.155P(22.156H) 8. 2.078-22.155P (22.156H) 8.2.

WIGGINS TEAPE RESEARCH & DEVELOPMENT LIMITED, LONDON (Großbrit.)WIGGINS TEAPE RESEARCH & DEVELOPMENT LIMITED, LONDON (Great Britain)

Polymerbeschiehtetes PapierPolymer coated paper

Die Erfindung bezieht sich auf polymerbeschiehtetes Papier mit einem Gehalt an einem Antistatikmittel, wie es z. B. als photographisches Trägermaterial verwendet wird.The invention relates to polymer coated paper containing an antistatic agent such as it z. B. is used as a photographic support material.

Statische Elektrizität war normalerweise bei photographischem Papier kein Problem, da das Papier gewöhnlich von sich aus genügend leitend ist, um die Ansammlung einer statischen elektrischen Ladung darauf zu verhindern. Jedoch verwendet man gegenwärtig polymerbeschiehtetes Papier als photographisches Trägermaterial, und der Oberflächenwiderstand eines solchen Papiers ist normalerweise hoch genug, daß die Bildung einer statischen elektrischen Ladung darauf zu einem Problem wird,Static electricity has usually not been a problem with photographic paper as paper is usually is inherently sufficiently conductive to prevent the build-up of static electrical charge on it. However polymer-coated paper is currently used as the photographic base material, and the surface resistance Such paper is usually high enough that a static electrical charge can build up on it becomes a problem

078-(43 906)-TBk078- (43 906) -TBk

509834/0786509834/0786

In der GB-PS 1 019 664 ist ein polymerbeschichtetes Papier mit einer Papierunterlage, einem Polymerkunststoffüberzug auf beiden Seiten der Papierunterlage und z. B. Natriumsulfat als Antistatikmittel in der Masse des Papiers oder an dessen einer Oberfläche zwischen der Papierunterlage und dem Polymerüberzug beschrieben und beansprucht.GB-PS 1 019 664 describes a polymer-coated paper with a paper backing, a polymer plastic coating on both sides of the paper backing and e.g. B. sodium sulfate as an antistatic agent in the bulk of the paper or on one surface between the paper base and the polymer coating described and claimed.

Der Erfindung liegt die Aufgabe zugrunde, ein solches polymerbeschichtetes Papier zu verbessern.The invention is based on the object of improving such a polymer-coated paper.

Es ist an sich vorteilhaft, Natriumsulfat als das Antistatikmittel zu verwenden, da es verhältnismäßig wenig kostet. Es wurde nun festgestellt, daß die antistatischen Eigenschaften des Papiers mit steigenden Mengen an Natriumsulfat nur bis zu einer verhältnismäßig niedrigen Maximalmenge verbessert werden, während darüber hinausgehende Mengen an Natriumsulfat keine weitere Verbesserung liefern.It is inherently beneficial to use sodium sulfate as the antistatic agent to use because it costs relatively little. It has now been found that the antistatic Properties of the paper with increasing amounts of sodium sulfate only up to a relatively low maximum amount can be improved, while amounts of sodium sulfate in excess of this provide no further improvement.

Die genannte Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Natriumsulfat in einer Menge von 1,5 bis 2,0 Gew.fo der Papierunterlage vorliegt.The above object is inventively achieved in that the sodium sulfate in an amount of 1.5 to 2.0 wt. Fo the paper base is present.

Man stellt fest, daß sich der tatsächliche antistatische Effekt, wenn man ihn als Massenwiderstand des Papiers in Ohm je Quadratfläche mißt, mit dem Feuchtigkeitsgehalt des Papiers ändert. Es ist jedoch bei photographischen Papieren in der Praxis nicht immer möglich, den Feuchtigkeitsgehalt des Papiers über weite Grenzen zu variieren, da der Feuchtigkeitsgehalt des Papiers die Härte der auf das Papier aufgebrachten photographischen Emulsionen beeinflussen kann, was insbesondere für den Fall von farbphotographischen Emulsionen gilt, wobei die Härte der Emulsion ihrerseits die Entwicklungszeit und das damit verknüpfte Farbgleichgewicht sowie auch It can be seen that the actual antistatic effect can be found in terms of the mass resistance of the paper in ohms per square area, changes with the moisture content of the paper. However, it is in the case of photographic papers In practice, it is not always possible to vary the moisture content of the paper over wide limits because of the moisture content of the paper can affect the hardness of the photographic emulsions applied to the paper, which applies in particular to the case of color photographic emulsions, the hardness of the emulsion in turn, the development time and the associated color balance as well

509834/0786509834/0786

die Haftung der Emulsion am Papier beeinflußt. Daher ist der erforderliche Feuchtigkeitsgehalt gewöhnlich aus anderen Gründen als den optimalen antistatischen Eigenschaften vorbestimmt.affects the adhesion of the emulsion to the paper. Hence, the required moisture content is usually out for reasons other than optimal antistatic properties.

Das polymerbeschichtete Papier gemäß der Erfindung läßt sich nach auf diesem Gebiet an sich bekannten Verfahren verarbeiten, um eine angemessene Haftung einer anschließend aufgebrachten photographischen Emulsion sicherzustellen, ohne daß die antistatischen Eigenschaften des Papiers ungünstig beeinflußt werden. Die vorzugsweise haftungsfördernde Behandlung ist ein Elektronenbombardement entsprechend der GB-PS 1 04^ 7Oj5.The polymer-coated paper according to the invention can be prepared by methods known per se in the art process to ensure adequate adhesion of a subsequently applied photographic emulsion, without adversely affecting the antistatic properties of the paper. The preferably Adhesion-promoting treatment is an electron bombardment according to GB-PS 1 04 ^ 7Oj5.

Bestimmte Ausführungsbeispiele der Erfindung sollen nun anhand der einzigen Figur erläutert werden, die ein Diagramm des Logarithmus des Massenwiderstandes in Abhängigkeit vom Gewichtsprozentsatz des Natriumsulfatgehalts für ansonsten praktisch gleiche polymerbeschichtete photographische Papiere darstellt, wobei die vier verschiedenen Kurven entsprechend den Angaben in der Figur bei verschiedenen Feuchtigkeitsgehalten der Papiere gewonnen wurden.Certain exemplary embodiments of the invention will now be explained with reference to the single figure that shows a Diagram of the logarithm of the mass resistance as a function of the percentage by weight of the sodium sulfate content for otherwise virtually identical polymer-coated photographic ones Papers represents, with the four different curves according to the indications in the figure at different Moisture contents of the papers were obtained.

In jedem Fall wies das polymerbeschichtete Papier eine Papierunterlage mit einer Masse von 184 g/m auf, die auf einer Seite mit einem Hochdichte-Polyäthylenkunststoff-Überzug bespritzt wurde, dessen Gewicht 40 g/m ausmachte, und die auf der anderen Seite mit einem Niedrigdichte-Polyäthylenkunststoff-Überzug mit einem Gehalt an 10 Gew.% Titandioxid-Pigmentstoff bespritzt wurde, dessen Gewicht ebenfalls 40 g/mIn each case, the polymer-coated paper had a paper backing with a mass of 184 g / m 2, which was sprayed on one side with a high density polyethylene plastic coating, the weight of which was 40 g / m 2, and on the other side with a low density -Polyethylene plastic coating with a content of 10 wt. % Titanium dioxide pigment was sprayed, the weight of which is also 40 g / m

Das Natriumsulfat wurde in die Papierunterlage auf einerThe sodium sulfate was in the paper backing on a

509834/0786509834/0786

Kalibrierpresse in bekannter Weise vor Anbringung der Polyäthylenüberzüge eingebracht. Proben der Papierunterlage wurden vor der Aufbringung der Polyäthylenüberzüge einer Reihe von Luftfeuchtigkeitsgehalten im Bereich von 10 bis 8j % relativer Feuchtigkeit ausgesetzt, um verschiedene Feuchtigkeitsgehalte im polymerbeschichteten Papier zu erzeugen, und es wurden anschließend Messungen des Feuchtigkeitsgehalts, der Natriumsulfatkonzentration und des Massenwiderstandes des polymerbeschichteten Papiers durchgeführt. Calibrating press introduced in a known manner before applying the polyethylene coatings. Samples of the paper backing were exposed to a range of humidity levels in the range of 10 to 8 % relative humidity prior to application of the polyethylene coatings in order to produce various moisture levels in the polymer-coated paper, and measurements of the moisture content, the sodium sulfate concentration and the mass resistance of the polymer-coated paper were then carried out .

Die Ergebnisse sind in der Figur aufgetragen, woraus ersichtlich ist, daß der hohe Massenwiderstand des unbehandelten Papiers durch den Zusatz geringer Mengen von Natriumsulfat verringert wird, daß Jedoch die Verringerung des Massenwiderstandes sich bei steigendem Natriumsulfatgehalt bereits bei einem Zusatz von etwa 1,5 Gew.% Na2SO^ abzuflachen beginnt. Bei einem Zusatz von mehr als 2,0 Gew.^ Na2SO^ ist die Kurve bereits im wesentlichen horizontal, so daß keine vernünftige Veranlassung für einen höheren Zusatz vorliegt.The results are plotted in the figure, from which it can be seen that the high mass resistance of the untreated paper is reduced by the addition of small amounts of sodium sulfate. % Na 2 SO ^ begins to flatten out. With an addition of more than 2.0 wt. ^ Na 2 SO ^ the curve is already essentially horizontal, so that there is no reasonable cause for a higher addition.

Unter Berücksichtigung der Rentabilität beträgt die optimale Zusatzmenge im wesentlichen 1,75 Gew.% Na2SO^.Taking into account the profitability, the optimal addition amount is essentially 1.75 wt. % Na 2 SO ^.

Man stellt im übrigen fest, daß der Feuchtigkeitsgehalt des Papiers einen erheblichen Unterschied des Massenwiderstandes bewirkt, jedoch die Vorzugs- oder Optimalzusatzmengen an Natriumsulfat nicht ändert.It is also found that the moisture content of the paper makes a considerable difference in mass resistance but does not change the preferred or optimal added amounts of sodium sulfate.

Bei einem geringen Feuchtigkeitsgehalt von 2,95 % With a low moisture content of 2.95 %

hat das unbehandelte Papier einen sehr hohen Massenwider-the untreated paper has a very high mass resistance

12
stand von mehr als 10 0hm Quadratfläche, was schlechte12th
stood by more than 10 ohm square area, which is bad

509834/0786509834/0786

antistatische Eigenschaften ergeben würde, während das Papier mit 2,0 Gew.% Na^SOn einen erheblich reduziertenwould give antistatic properties, while the paper with 2.0 wt. % Na ^ SOn significantly reduced one

1010

Widerstand von nur noch angenähert 3*5 x 10 Ohm Quadratfläche aufweist. Ähnliche Verringerungen ersieht man aus den Kurven für mäßige Feuchtigkeitsgehalte von 5*05 und 7*46 % und auch für den hohen Feuchtigkeitsgehalt von 11,45 %f wobei ein steigender Feuchtigkeitsgehalt die Wirkung der Senkung des Widerstandes aller Papierarten und damit einer Verschiebung der Kurven nach unten hat.Resistance of only approximately 3 * 5 x 10 ohms square area. Similar reductions can be seen from the curves for moderate moisture contents of 5 * 05 and 7 * 46 % and also for the high moisture content of 11.45 % f, with an increasing moisture content having the effect of lowering the resistance of all types of paper and thus shifting the curves down has.

50983A/078650983A / 0786

Claims (6)

PatentansprücheClaims (T) Polymerbeschichtetes Papier mit einer Papierunterlage, einem Polymerkunststoffüberzug auf beiden Seiten der Papierunterlage und Natriumsulfat als Antistatikmittel in der Masse des Papiers oder an dessen einer Oberfläche zwischen der Papierunterlage und dem Polymerüberzug, dadurch gekennzeichnet, daß das Natriumsulfat in einer Menge von 1,5 bis 2,0 Gew.% der Papierunterlage vorliegt. (T) polymer-coated paper with a paper backing, a polymer plastic coating on both sides of the paper backing and sodium sulfate as an antistatic agent in the bulk of the paper or on one surface between the paper backing and the polymer coating, characterized in that the sodium sulfate in an amount of 1.5 to 2.0 wt.% of the paper substrate present. 2. Papier nach Anspruch 1, dadurch gekennzeichnet, daß die Menge des Natriumsulfats im wesentlichen 1,75 Gew.# der Papierunterlage beträgt.2. Paper according to claim 1, characterized in that the amount of sodium sulfate is essentially 1.75% by weight of the paper backing. 3. Papier nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der eine der Polymerüberzüge aus Niedrigdichte-Polyäthylen und der andere Polymerüberzug aus Hochdichte-Polyäthylen besteht.3. Paper according to claim 1 or 2, characterized in that that one of the polymer coatings of low density polyethylene and the other polymer coating of high density polyethylene consists. 4. Papier nach Anspruch 3* dadurch gekennzeichnet, daß der Niedrigdichte-Polyäthylenüberzug 10 Gew.% Titandioxid-Pigmentmaterial enthält.4. Paper according to claim 3 * characterized in that the low density Polyäthylenüberzug contains 10 wt.% Titanium dioxide pigment material. 5. Papier nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die PolymerüberzUge Extrusionsüberzüge sind.5. Paper according to claim 3 or 4, characterized in that that the polymer coatings are extrusion coatings. 6. Papier nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die PolymerUberzüge Spritzüberzüge sind.6. Paper according to claim 3 or 4, characterized in that the polymer coatings are spray coatings. 509834/078 6509834/078 6
DE19742406139 1972-09-20 1974-02-08 POLYMER COATED PAPER Pending DE2406139A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4362472 1972-09-20

Publications (1)

Publication Number Publication Date
DE2406139A1 true DE2406139A1 (en) 1975-08-21

Family

ID=10429602

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742406139 Pending DE2406139A1 (en) 1972-09-20 1974-02-08 POLYMER COATED PAPER

Country Status (5)

Country Link
JP (1) JPS50112505A (en)
BE (1) BE810813A (en)
DE (1) DE2406139A1 (en)
FR (1) FR2260815B1 (en)
GB (1) GB1346960A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5653744B2 (en) * 1974-05-23 1981-12-21
JPS57170794A (en) * 1981-04-14 1982-10-21 Kanzaki Paper Mfg Co Ltd Heat sensitive recording paper
DE3130071A1 (en) * 1981-07-30 1983-02-17 Agfa-Gevaert Ag, 5090 Leverkusen COUNTERFEIT-PROOF DOCUMENT AND METHOD FOR THE PRODUCTION THEREOF
JPS5882242A (en) * 1981-11-11 1983-05-17 Fuji Photo Film Co Ltd Photographic paper base
US4806410A (en) * 1986-09-18 1989-02-21 Ranpak Corp. Processes for the production of antistatic or static dissipative paper, and the paper products thus produced, and apparatus utilized
NO319190B1 (en) * 2002-05-15 2005-06-27 Knut Magne Furuheim Process for producing a barrier material having good gas barrier properties, and barrier material obtained therefrom.
ATE501845T1 (en) * 2003-12-22 2011-04-15 Fritz Egger Gmbh & Co Og CONDUCTIVE WOOD MATERIAL COMPONENT AND METHOD FOR THE PRODUCTION THEREOF
CN114561832A (en) * 2022-03-01 2022-05-31 山东博汇纸业股份有限公司 Antistatic production process of electrostatic copying paper

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1019664A (en) * 1911-01-25 1912-03-05 Ludwick Larson Door.

Also Published As

Publication number Publication date
FR2260815A1 (en) 1975-09-05
FR2260815B1 (en) 1981-05-08
JPS50112505A (en) 1975-09-04
GB1346960A (en) 1974-02-13
BE810813A (en) 1974-05-29

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