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
  • D21H19/80—Paper comprising more than one coating
  • D21H19/84—Paper comprising more than one coating on both sides of the substrate
• • 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
  • D21H11/14—Secondary 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
  • D21H21/50—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 form
  • D21H21/52—Additives of definite length or shape
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
  • Y10T428/258—Alkali metal or alkaline earth metal or compound thereof
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
  • Y10T428/259—Silicic material
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
  • Y10T428/273—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.] of coating
  • Y10T428/277—Cellulosic substrate
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31971—Of carbohydrate
  • Y10T428/31993—Of paper

Definitions

• the present invention relates to a bilateral coated web printing paper, consisting of a coating base paper, the mineral Filler and wood fiber as fiber components and / or contains pulp, which is for inclusion printing ink, pigment and binder containing stroke by means of a film press is applied.
• the invention further relates to a Process for the production of roll printing paper.
• Roll paper of the type specified at the beginning are used for the production of Magazines, especially illustrated ones Magazines, magazines, catalogs and Advertising brochures, as they usually do Daily newspapers or illustrated magazines are attached.
• EP-A-0 377 983 A2 relates to a newsprint paper coated by means of an air brush or a roller coater, which is said to have improved ink acceptance, surface strength and opacity.
• Line weights of between 1 and 12 g / m 2 , preferably between 3 and 8 g / m 2 and the side to be printed are disclosed, a total area weight of 60 g / m 2 not to be exceeded.
• the filler content of the known coating base paper is in the usual range between 0.5 and 10% by weight, but preferably less than 0.5% by weight.
• the present invention has the task of a roll paper coated on both sides for To provide that under cost effective Conditions can be produced at the Not making a double stroke in particular is necessary, the fibrous material may be from There is recycled fiber and its appearance and Printability with the usual ones Web printing paper is comparable. Especially the invention wants a gravure capable Provide roll printing paper.
• roll printing papers according to the invention are only single-ply papers for Difference of z. B. to understand cardboard.
• the mineral pigments are included under filler understand the fiber suspension at the Papermaking can be added. It will be there no distinction between freshly added Fillers and fillers, which together with fiber materials recovered from waste paper Papermaking process are fed.
• Recycled fibers are recovered from waste paper Fibers, according to the invention in particular those from the waste paper type are preferred D31 according to the list of German Standard varieties can be obtained.
• Deinkt recycled fibers are fibers of which the Ink is largely removed.
• TMP substance thermo-mechanical Refiner wood pulp
• film press becomes here Labeling of all facilities used at which are pre-dosed with the coating color Metering rollers, doctor blades and smooth or grooved squeegee on a transfer roller takes place, of which "indirectly" the predosed Coating color to form the coating the coating base paper web is transmitted.
• Hot-soft calenders are also known in the professional world Soft Compact Calendar called, the Nip from a heated chilled cast iron and a related roller with elastic plastic, see p. a. "Weekly paper for paper manufacture "16 (1990), pages 701 to 708.
• Binder information concerns the solids content of the binder.
• the coating pigments To ensure a uniform coat surface, it has proven to be expedient for the coating pigments to have an average grain size in the range from 1.3 to 2.5 ⁇ m and for their BET surface area to be between 6.5 and 9 m 2 / g.
• pigments present in the line exclusively mineral pigments.
• these coarse-grain pigments as coating pigments for a to be applied by means of a film press Coating color does not the so-called film splitting or at least in a much smaller one Extent occurs and therefore an essential smoother line surface is created.
• the invention therefore also possible with highly pigmented Coating inks a problem-free job too much higher coat weights. With a single line is good coverage of the Coating base surface possible.
• the pigment of the coating preferably has 40 up to 55% by weight of a grain size ⁇ 2 ⁇ m. Possibly. can the line pigment up to max. 10% by weight - related on total pigment content - one or more non-mineral pigments such as B. unresolved Starch granules included.
• a roll printing paper of high opacity and good surface structure is produced, which can be printed in both offset and gravure printing.
• the pigment content of the coating is not less than 80% by weight, based on the total solids content of the coating, with conventional coating color auxiliaries in a minor amount of max. 1.5% by weight can be present.
• a film press as a coating device not only enables the coating base paper to be reduced to 30 g / m 2 , it also makes it possible, in conjunction with the pigment composition according to the invention, for the coating used to hold the printing ink, apart from wood pulp and / or cellulose ⁇ 50% by weight of the base paper from recycled fibers, preferably from deinked recycled fibers.
• the present invention once the advantage of access to the compared to the usual finely divided coating pigments cheaper Coating pigments according to the invention Saving material costs, furthermore arises the advantage with just a single swipe reduce manufacturing costs and finally, the invention also offers the advantage in considerable ways on recycled fibers to be able to fall back on.
• the invention is not limited to the use of recycled fibers, rather, considerable ones are already emerging economic benefits from the reduced Material and manufacturing costs, even if the pulp of the coating base paper from only There is wood pulp and cellulose.
• Coating pigments kaolin, calcium carbonate and talc are preferably as Coating pigments kaolin, calcium carbonate and talc suitable.
• a coat application of more than 5 g / m 2 and page is preferred, but the application weight should not exceed 10 g / m 2 and page.
• the level of binder in the coating is determined according to the intended use of the invention Web printing paper, with one for dry offset roll paper to be printed Binder content of 12 to 20% by weight, based on Pigment, is preferred while for the Wet offset printing has a binder content of 10 to 15 % By weight is sufficient.
• a binder content of 4 to 7 wt.% Based on pigment is according to the invention.
• binders in particular come Synthetic latices on acrylate and Butadiene styrene base in question, further - especially with offset printing recipes - Starch-based binders, generally it is preferred that the binder as a whole consists predominantly of a synthetic latex. Only with offset printing recipes with Binder proportions of more than 10% by weight can also more than 50% by weight, but not more than 65 % By weight from a starch-based binder consist.
• Roll printing paper has become a coating base paper proven to be particularly suitable for Improvement in strength during manufacture cationic starch added as a mass additive has been.
• the fillers of the coating base paper preferably consist mainly of kaolin, Calcium carbonate and talc or a mixture of these substances.
• the production of the roll printing paper can done online according to the invention, d. H. the Coating base paper becomes directly after it dries the film press to apply the coating fed and possibly also without intermediate winding Application and drying of the coating directly smoothed using a calender.
• a calender come here a super calender or a hot-soft calender in question.
• Example 1 a wood-based coating base paper with a basis weight of 52 g / m 2 and a filler content of 31% by weight was coated in an experimental coating device equipped with a film press - application weight: 6 g / m 2 and side - and dried a super calender satin.
• Coating color 1 (example 1): kaolin 45% by weight ⁇ 2 ⁇ m 100 parts by weight self-thickening acrylic latex 5 parts by weight Na stearate 0.5 parts by weight Solids content 40% by weight
• Coating color 2 (example 2): Kaolin as in coating color 1 60 parts by weight talc 44% by weight ⁇ 2 ⁇ m 40 parts by weight other components and solids content as in coating color 1.

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Applications Claiming Priority (3)

Publications (2)

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ID=6514829

Family Applications (1)

Country Status (10)

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Family Cites Families (11)

• 1994
  • 1994-04-08 DE DE4411987A patent/DE4411987C2/de not_active Expired - Fee Related
• 1995
  • 1995-04-07 DK DK95916612T patent/DK0754260T3/da active
  • 1995-04-07 ES ES95916612T patent/ES2123976T3/es not_active Expired - Lifetime
  • 1995-04-07 AT AT95916612T patent/ATE171743T1/de not_active IP Right Cessation
  • 1995-04-07 EP EP95916612A patent/EP0754260B1/de not_active Expired - Lifetime
  • 1995-04-07 DE DE59503785T patent/DE59503785D1/de not_active Expired - Fee Related
  • 1995-04-07 JP JP52607395A patent/JPH09511552A/ja active Pending
  • 1995-04-07 US US08/722,248 patent/US5952091A/en not_active Expired - Fee Related
  • 1995-04-07 CA CA 2187182 patent/CA2187182C/en not_active Expired - Fee Related
  • 1995-04-07 WO PCT/EP1995/001283 patent/WO1995027824A1/de active IP Right Grant
• 1996
  • 1996-10-02 FI FI963942A patent/FI963942L/sv unknown

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