EP0908560A1 - Coated roll printing paper suitable for printing with cold-set links - Google Patents
Coated roll printing paper suitable for printing with cold-set links Download PDFInfo
- Publication number
- EP0908560A1 EP0908560A1 EP98118888A EP98118888A EP0908560A1 EP 0908560 A1 EP0908560 A1 EP 0908560A1 EP 98118888 A EP98118888 A EP 98118888A EP 98118888 A EP98118888 A EP 98118888A EP 0908560 A1 EP0908560 A1 EP 0908560A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper
- printing paper
- paper according
- binder
- coating
- 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.)
- Granted
Links
- 238000007639 printing Methods 0.000 title claims abstract description 49
- 239000000123 paper Substances 0.000 claims abstract description 133
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 239000011230 binding agent Substances 0.000 claims abstract description 37
- 239000000049 pigment Substances 0.000 claims abstract description 35
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000000976 ink Substances 0.000 claims abstract description 16
- 230000035515 penetration Effects 0.000 claims abstract description 10
- 239000012764 mineral filler Substances 0.000 claims abstract description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 18
- 229920002472 Starch Polymers 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 235000019698 starch Nutrition 0.000 claims description 15
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 14
- 239000008107 starch Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 12
- 239000005995 Aluminium silicate Substances 0.000 claims description 10
- 235000012211 aluminium silicate Nutrition 0.000 claims description 10
- 229920001131 Pulp (paper) Polymers 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000010893 paper waste Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims description 5
- 238000009863 impact test Methods 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 238000007645 offset printing Methods 0.000 claims description 3
- 102000004169 proteins and genes Human genes 0.000 claims description 3
- 108090000623 proteins and genes Proteins 0.000 claims description 3
- 239000001040 synthetic pigment Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000002585 base Substances 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 11
- 238000009499 grossing Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 description 7
- 239000002023 wood Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 235000010216 calcium carbonate Nutrition 0.000 description 4
- 239000011111 cardboard Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 235000018102 proteins Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- NJVOHKFLBKQLIZ-UHFFFAOYSA-N (2-ethenylphenyl) prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1C=C NJVOHKFLBKQLIZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000005087 leaf formation Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
- D21H19/36—Coatings with pigments
-
- 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
- B41M5/508—Supports
-
- 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
- B41M5/5236—Macromolecular coatings characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose
-
- 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
- D21H11/14—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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/385—Oxides, hydroxides or carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/42—Coatings with pigments characterised by the pigments at least partly organic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/50—Proteins
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/52—Cellulose; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/54—Starch
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- 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
- Y10T428/27—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
Definitions
- the invention relates to a for printing with coldset offset printing inks suitable, coated roll printing paper.
- the roll printing paper described in EP-A-0 785 307 is a so-called. Matt quality. It is detailed in this older document that the Achieving the printability and printability of a coated roll printing paper special requirements for the paper in the coldset offset process its wetting or penetration behavior towards water and its Color recording speed are to be set. These are properties that through a satin finish on smoothing from 1000 to 1600 sec Bekk, as it is for the Making usual smooth papers is required, partly strong again be adversely affected, which is why it was first possible to to provide coated matt quality for the coldset process.
- the invention is therefore based on the object, a deleted To provide roll printing paper for the coldset process, which has a sufficient gloss for more demanding print products, in particular advertising supplements and the like., And inexpensive to manufacture is.
- the matt paper quality described in EP-A-0785 307 for the coldset process is primarily measured by its water absorption capacity the wetting angle of a drop of water or by determination characterized the penetration behavior.
- Another important property of the paper, which, however, are to a certain extent dependent on the press can is the ink path behavior of the paper. It was already in the EP-A-0 785 307 indicated, namely there on page 12, lines 19-23 that the the two properties mentioned are mutually dependent to some extent, so that a paper can still be used for printing in the coldset process is suitable if the values for the water absorption capacity and the Move the ink path to its opposite limits, so here a certain compensation of the properties seems to take place. The The reasons for this are not yet known.
- the possible and preferred limits for the smoothness values to be observed have already been specified.
- the water intake after the Emco test after one second should be in the range of 85-25%, preferably in the range of 70-30%.
- the color path impact test should have a value of 1.1 to 0.25, preferably give a value of 0.8 to 0.3.
- the gloss measured according to Lehmann at 75 ° should amount to at least 25%, but preferably between 30 and 55% a sufficient glossiness of the paper according to the usual opinion surrender.
- the test methods used are explained in more detail below.
- the penetration test according to Emco and the color path impact test are defined as already in EP-A-0 785 307 described.
- Fine-particle pigments in the line composition accelerate in the general ink drying (shortening the ink path impact time, expressed by a lower densitometer value) and the Water absorption.
- the specialist therefore has the choice or Mix the pigment grain in hand, both sizes according to the invention influence.
- the binder content in the The coating color should not exceed 18% by weight, based on the coating pigment. The higher values below this limit are considered if starch and / or CMC can be used in addition to synthetic binders.
- binder The following types of binder are generally used in paper coating used, their order indicating decreasing binding effect: Plastic dispersions (e.g. styrene-butadiene, acrylate, styrene-acrylate), Polyvinyl alcohol, protein or casein, starch. They are highly active binders mentioned plastic dispersions, also in combination with PVA. For certain binders may require the addition of a crosslinking agent.
- the total binder content can be less than 16 wt .-%, based on coating pigment, preferably even less than 14 wt .-%.
- PVA also has the property of being irreversible Raise areas that have a relatively inert reactivity, such as this is the case with the calcium carbonate used in the context of the invention is.
- the binder proportions can be as follows: Plastic binder 3 - 10% by weight PVA 0 - 5% by weight protein 0 - 5% by weight Strength 0 - 10% by weight CMC 0-2% by weight
- the coating colors used can be conventional additives, such as up to 1.5% by weight melamine formaldehyde resin as wet strength agent, up to 0.4% Carboxymethyl cellulose (CMC) as a solution, optical brightener and / or Chemicals for pH adjustment, such as containing NaOH.
- CMC Carboxymethyl cellulose
- the coating colors according to the invention are added in an aqueous slurry Solids contents of 30-65 wt .-% processed dry mass processed.
- Application procedures come both scraping order procedures, as inverted Blade, Jet Flow as well as roller applicators like the Massey-Coater and also film presses, such as the Jagenberg film press, the Speedsizer or the Metering Size Press from Beloit in question.
- the paper according to the invention is therefore essentially independent of the type of stroke application process, although one or the other order method under certain conditions too can lead to a better result.
- the same Scraper coating processes the paper surface and therefore lead locally differently thick line application, while roller coating devices rather create a uniform stroke, what for Ink path behavior can be positive under certain circumstances. Significant can also be a gentle coat drying, so that not undesirable Binder migration phenomena the desired uniform Deteriorate microcapillarity of the coat application.
- coating amounts intended to be dry are applied according to the invention with a mass per unit area of more than 4 g / m 2 and side to the base paper. Area-based masses of 6-12 g / m 2 and side are preferred, typically about 7 g / m 2 and side.
- the invention is not limited to simply coated papers. It is also applicable to double coated papers. Double strokes are based on a mass per unit area of at least 15 g / m 2 and side, typically 20 g / m 2 and side, the coating slip being distributed approximately evenly between the two coat orders.
- the top coat is obviously decisive for the properties of the paper according to the invention. If, within the scope of this description, there is talk of a stroke application without this being specified, the single stroke application is meant for single-coated papers and the cover stroke for double-coated papers.
- the primer in the double stroke is always expressly designated as such in the context of this description. The primer can have a different composition from the top coat.
- the invention is not based on the use of any particular base paper limited. So both wood-free and wood-containing base papers and those with a significant proportion of processed waste paper fibers Find use.
- a wood-free base paper is suitable its entry for papermaking in dry portions 78% pulp, about 20% mineral filler, about 1% starch and about Contains 1% other aids.
- wood-containing base papers are preferred also contain a proportion of processed waste paper fibers.
- Wood-containing base papers usually also have printing technology Benefits, such as higher opacity.
- the fiber entry for a Raw paper containing wood and waste paper can, for example, refer to dry imaginary total fiber, from about 20% pulp, 20% wood pulp and 60 % Of waste paper.
- the material input can also contain up to about 50% mineral filler, which is about one Proportion of 1/3 of the substance composition corresponds. As is known, remains this amount of filler in the manufacturing process is not completely in the paper, but partly gets into the process water.
- wood pulp Fibrous component it can be all of these Trade substances that are commonly used in paper technology under this Expression can be understood, namely for example ground wood, thermomechanical wood pulp (TMP), chemical-thermal-mechanical Wood pulp (CTMP) etc.
- TMP thermomechanical wood pulp
- CMP chemical-thermal-mechanical Wood pulp
- the mass per unit area of the finished paper is in the range from 40 to 80 g / m 2 , preferably from 54 to 60 g / m 2 .
- the dynamic penetration meter DPM 27 from the company serves as paper sample emco Elektronische Meß- und Steuerungstechnik GmbH in 04347 für, Gorki No 31.
- the test method is based on the device description and Operating instructions of this company as of 13.03.1995. Is measured the drop in the ultrasound transmission value based on the measured value the not soaked sample, which is set equal to 100%, over time. At each point in time, the measured value is given as a percentage of the same 100% set initial value. Basically it is a dynamic test in which a curve of the Transmission drop is applied over time. This curve is only falling steep, then bends and approaches more or at measuring times over 6 sec less asymptotic a certain transmission value.
- a company Applicant's modified throw-away test using the multi-purpose test printing machine System Dr. Dürner, the company strigbau Dr.-Ing. Herbert Dürner, Peissenberg, used.
- the throw-away test is defined under Conditions, a test print with a standard printing ink is produced, according to in contact with a counter paper for a defined time brought. The ink intensity printed on the backing paper is measured with a densitometer.
- the Counter-pressure test also as a lubrication test or a kick-off test referred to, a defined amount of printing ink on a paper strip applied, which then in sections at predetermined intervals is rolled over a counter test strip. The on the counter test strips
- the quantities of paint delivered are determined optically and allow conclusions to be drawn on the color recording behavior and stacking behavior of the test strip.
- test procedure Details of the test procedure are a detailed description to the multi-purpose test printing machine from Ardbau, Dr.-Ing. Herbert Dürner, Aich 17-23, D-82380 P formulateenberg / Kunststoff, from September 26, 1972, in particular under 10.5 and 14.2.
- a color range of 0.3 cm 3 a rubbing time of 30 seconds in the inking unit and 30 seconds for the printing form is recommended for coated papers.
- the contact pressure for pressure and counter pressure should be 200 N / cm each, ie 800 N with a printing form width of 4 cm.
- the Away Test Paint No. 52 0068 from the Michael Huber paint factory in Kunststoff is to be used.
- the counter print should be carried out after 30, 60, 120 and 240 sec.
- the recommended print speed is 0.5 m / sec.
- a standard paper called APCO II / II from Scheufelen is used as the test printing paper.
- the gloss meter LGDL-02 laboratory from the company is used for gloss measurement Lehmann, measurement and control technology in Biel, Switzerland. Used is the gloss measuring head LGML-02 for laboratory with an irradiation and Beam angle of 75 °.
- the test standards used for gloss measurement are E DIN 54502 inspection of paper and cardboard, gloss assessment even Paper and cardboard surfaces with the help of reflectometer values, and Zellcheming Merkblatt V / 22/72 Testing paper, cardboard and cardboard; Measurement of the gloss.
- a base paper was produced from the following material input at a machine speed of about 1,300 m / min: Stock entry of raw paper Wood sanding 12.3% cellulose 13.0% Waste paper 40.0% filler 33.0% Highly cationic strength 1.5% Retention aid 0.2% 100% Test data of the base paper area based size 39.9 g / m 2 Filler content 14.9% Longitudinal breaking load 42.0 N. Breaking load across 11.7 N. Fiber orientation across to lengthways 1: 3.5 brightness 73.0% volume 1.52 cm 3 / g
- Coating color formulation FG Pigments High kaolin color High PCC color Rhomb. Coating (MPS 0.5 ⁇ m) 72% 100 Amazon 88 74% 50 PLC 66% 50 binder PVA low viscosity 20% 2.0 2.0 Plastic binder 50% 7.0 7.0 Strength 23% 6.0 6.0 Optical brightener 100% 1.3 1.3 1.3 Crosslinking agent (MF resin) 73% 1.3 1.3 Synth.
- This quality is a kaolin with flat particles from ECC International.
- the form factor of this pigment is 21, the fineness 80%, of the particles ⁇ 2 ⁇ m and 66% ⁇ 1 ⁇ m.
- This pigment is a precipitated calcium carbonate with a rhombohedral Crystal structure from Faxe Kalk, DK-1017 Copenhagen K.
- the pigment has a fineness of 0.5 ⁇ m.
- test results show that with consciously set smoothing of about 500 sec Bekk gloss values of 41% for the high kaolin coating color and 35% for the coating color with PCC were achieved.
- the Water absorption measurement after the Emco test was 48 and 51%, respectively thus in the preferred range. The same applies to the color path impact test with Values of 0.4 or 0.3.
- the pick resistance was rated as good with grade 2. At Apply less smoothing to the same papers that are Smoothness values of about 250 sec Bekk could lead to the used Line compositions have not yet achieved sufficient gloss values become. With the addition of 10% synthetic pigment to the Coating pigments were able to achieve a somewhat higher gloss However, wet pick resistance as a measure of the suitability for offset decreased.
Landscapes
- Paper (AREA)
- Printing Methods (AREA)
- Laminated Bodies (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
Die Erfindung betrifft ein für das Bedrucken mit Coldset-Offset-Druckfarben geeignetes, gestrichenes Rollendruckpapier.The invention relates to a for printing with coldset offset printing inks suitable, coated roll printing paper.
Ein derartiges Papier ist aus der EP-A-0 785 307 bereits bekannt. Bezüglich des Bedarfes an aufgebesserten Coldset-Papierqualitäten und die damit verbundenen Probleme wird auf die einleitenden Ausführungen in dieser älteren Schrift verwiesen.Such a paper is already known from EP-A-0 785 307. In terms of of the need for improved coldset paper grades and the related related problems will be discussed in the introductory remarks in this older writing.
Das in der EP-A-0 785 307 beschriebene Rollendruckpapier ist eine sog. Mattqualität. Es ist in dieser älteren Schrift eingehend ausgeführt, daß zum Erreichen der Ver- und Bedruckbarkeit eines gestrichenen Rollendruckpapieres im Coldset-Offset-Verfahren spezielle Anforderungen an das Papier bezüglich seines Benetzungs- bzw. Penetrationsverhaltens gegenüber Wasser und seiner Farbaufnahmegeschwindigkeit zu stellen sind. Das sind Eigenschaften, die durch eine Satinage auf Glätten von 1000 bis 1600 sec Bekk, wie sie für das Herstellen üblicher glatter Papiere erforderlich ist, zum Teil wieder stark nachteilig beeinflußt werden, weswegen es zuerst gelungen war, eine gestrichene Mattqualität für das Coldset-Verfahren zur Verfügung zu stellen.The roll printing paper described in EP-A-0 785 307 is a so-called. Matt quality. It is detailed in this older document that the Achieving the printability and printability of a coated roll printing paper special requirements for the paper in the coldset offset process its wetting or penetration behavior towards water and its Color recording speed are to be set. These are properties that through a satin finish on smoothing from 1000 to 1600 sec Bekk, as it is for the Making usual smooth papers is required, partly strong again be adversely affected, which is why it was first possible to to provide coated matt quality for the coldset process.
Nachdem über Zeitungsbeilagen ein hohes Maß an Werbewirksamkeit erzielt werden soll, kommen für bestimmte Werbeaufträge nur glänzende Papiere in Frage. In Ermangelung coldset-geeigneter LWC-Glanzpapiere werden diese Broschüren nach wie vor über das konventionelle Heatset-Verfahren gedruckt. Um dem Coldset-Drucker auch die Übernahme derartiger Druckaufträge zu ermöglichen, galt es, eine glänzende Papierqualität zu entwickeln, die diese Qualitätslücke schließt und problemlos über die im Zeitungsdruckbereich üblichen Druckmaschinenkonfigurationen (Achtertürme und Satellitendruckwerke) zu ver- und bedrucken ist. Nachdem eine derartige Qualität im Bereich der Massendruckpapiere angesiedelt ist, sind auch wirtschaftliche Aspekte zu berücksichtigen.Having achieved a high degree of advertising effectiveness through newspaper inserts only glossy papers come in for certain advertising orders Question. In the absence of coldset-compatible LWC glossy papers, these become Brochures still printed using the conventional heatset process. In order for the coldset printer to accept such print jobs it was necessary to develop a glossy paper quality that this Quality gap closes and easily over that in the newspaper printing area usual printing press configurations (eight towers and Satellite printing units) is to be printed and printed. After such Quality is in the field of bulk printing papers, too to consider economic aspects.
Der Erfindung liegt daher die Aufgabe zugrunde, ein gestrichenes Rollendruckpapier für das Coldset-Verfahren zur Verfügung zu stellen, welches einen ausreichenden Glanz für anspruchsvollere Druckerzeugnisse, insbesondere Werbebeilagen und dergl. aufweist, und preisgünstig herzustellen ist.The invention is therefore based on the object, a deleted To provide roll printing paper for the coldset process, which has a sufficient gloss for more demanding print products, in particular advertising supplements and the like., And inexpensive to manufacture is.
Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst.This object is solved by the features of claim 1.
Die in der EP-A-0785 307 beschriebene matte Papierqualität für das Coldset-Verfahren ist in erster Linie durch ihre Wasseraufnahmefähigkeit, gemessen an dem Benetzungsrandwinkel eines Wassertropfens oder durch die Bestimmung des Penetrationsverhaltens charakterisiert. Eine weitere wichtige Eigenschaft des Papieres, die jedoch in gewissem Rahmen druckmaschinenabhängig sein kann, ist das Farbwegschlagverhalten des Papieres. Es wurde bereits in der EP-A-0 785 307 angedeutet, and zwar dort auf Seite 12, Zeilen 19-23, daß die beiden genannten Eigenschaften sich in gewisser Weise gegenseitig bedingen, so daß ein Papier auch noch dann für das Bedrucken im Coldset-Verfahren geeignet ist, wenn sich die Werte für das Wasseraufnahmevermögen und den Farbwegschlag in ihre entgegengesetzten Grenzbereiche bewegen, so daß hier eine gewisse Kompensation der Eigenschaften stattzufinden scheint. Die Gründe dafür sind bisher nicht bekannt.The matt paper quality described in EP-A-0785 307 for the coldset process is primarily measured by its water absorption capacity the wetting angle of a drop of water or by determination characterized the penetration behavior. Another important property of the paper, which, however, are to a certain extent dependent on the press can is the ink path behavior of the paper. It was already in the EP-A-0 785 307 indicated, namely there on page 12, lines 19-23 that the the two properties mentioned are mutually dependent to some extent, so that a paper can still be used for printing in the coldset process is suitable if the values for the water absorption capacity and the Move the ink path to its opposite limits, so here a certain compensation of the properties seems to take place. The The reasons for this are not yet known.
Es hat sich weiter gezeigt, daß ein glänzendes Druckpapier mit Coldset-Eignung nicht dadurch erhalten werden kann, daß man das Papier, wie ansonsten bei LWC-Papieren üblich, auf einen hohen Glättewert satiniert. It has also been shown that a glossy printing paper with coldset suitability cannot be obtained by using the paper like otherwise common for LWC papers, satin to a high smoothness value.
Darunter leidet nicht nur die Kombination der beiden vorstehend genannten Eigenschaften, die für die Eignung im Coldset-Verfahren wesentlich erscheinen, es wird dadurch zusätzlich auch die für das Offset-Verfahren allgemein erforderliche Rupffestigkeit des Papieres vermindert, die nicht in entsprechendem Maße durch zusätzliches Bindemittel im Strich kompensiert werden kann, weil letzteres wieder die beiden für das Coldset-Verfahren als maßgeblich erachteten Grundwerte beeinflußt.Not only does the combination of the two mentioned above suffer from this Properties that are essential for suitability in the coldset process appear, it also becomes the one for the offset process generally required pick resistance of the paper is reduced, which is not in correspondingly compensated by additional binders in the line can be because the latter again as the two for the coldset process significantly influenced basic values.
Es hat sich gezeigt, daß eine Satinage eines an sich coldset-geeigneten Druckpapieres auf Glättewerte von mehr als 1000 sec. Bekk die Coldset-Eignung zerstört. Machbar erscheinen noch Glätten im Bereich von etwa 500 sec. Bekk. Akzeptable Glanzwerte lassen sich gemäß der Erfindung mit Glätten ab 250 sec Bekk erreichen. Ein bevorzugter Bereich liegt bei 300 bis 400 sec Bekk. Das Ausrüsten des Papieres mit einer solchen Glätte kann jedoch bereits Rückwirkungen auf die Ver- und Bedruckbarkeit im Coldset-Verfahren haben.It has been shown that a satin finish is suitable in itself for a coldset Printing paper on smoothness values of more than 1000 sec. Get the coldset suitability destroyed. Smoothing in the range of approximately appears feasible 500 sec. Bekk. Acceptable gloss values can be achieved according to the invention Smoothing at Bekk from 250 sec. A preferred range is 300 to 400 sec Bekk. Finishing the paper with such a smoothness can however, there are already repercussions on the printability and printability in the coldset process to have.
Aber selbst eine Satinage auf Glättewerte in der Gegend von 500 sec. Bekk führt noch nicht notwendigerweise zu einem Papier mit einem angestrebten Glanz, der, gemessen nach Lehmann, bei einem Winkel von 75° bei mindestens etwa 25 % liegen soll. Der Glanz bei der angegebenen beschränkten Glätte kann durch die Auswahl geeigneter Streichpigmente erhöht werden. Diese Auswahl ist jedoch verhältnismäßig vielschichtig, so daß es praktisch unmöglich ist, die zu dem angestrebten Erfolg führenden Streichpigmentzusammensetzungen einzeln anzugeben. Dies wird noch dadurch erschwert, daß unterschiedliche Streichpigmentzusammensetzungen in der Regel auch qualitativ und mengenmäßig unterschiedliche Bindemittelzusammensetzungen bzw. -anteile erfordern, die ihrerseits wieder eine Rückwirkung auf die für die Coldset-Eignung maßgeblichen Grundwerte haben. Das erfindungsgemäße Papier ist daher neben Bereichen für das Wasseraufnahmevermögen, den Farbwegschlag und die Glätte zusätzlich durch Mindestglanzwerte definiert. Im Rahmen der der Erfindung zugrundeliegenden Untersuchungen wurden grundsätzliche Auswahlkriterien ermittelt, die zu dem angestrebten Erfolg führen und dem Fachmann eine ausreichende Lehre dahingehend geben, wie er vorzugehen hat. Diese Auswahlkriterien sind in Unteransprüchen enthalten. Außerdem enthalten die angefügten Ausführungsbeispiele konkrete Angaben darüber, wie ein erfindungsgemäßes Papier erzeugt werden kann.But even satinizing on smoothness values in the area of 500 sec. Bekk does not necessarily lead to a paper with an intended one Luster, measured according to Lehmann, at an angle of 75 ° should be at least about 25%. The shine at the specified Limited smoothness can be increased by choosing suitable coating pigments become. However, this selection is relatively complex, so that it is practically impossible, which leads to the desired success Specify coating pigment compositions individually. This will still do so complicates that different coating pigment compositions in the Usually also qualitatively and quantitatively different Binder compositions or proportions require, in turn, again a retroactive effect on the basic values relevant for the suitability for coldset to have. The paper of the invention is therefore next to areas for Water absorption capacity, the color loss and the smoothness through Minimum gloss values defined. Within the framework of the invention Investigations were determined basic selection criteria that lead to the achieve the desired success and provide the specialist with sufficient teaching give how to do it. These selection criteria are in Subclaims included. Also include the attached Embodiments concrete information about how an inventive Paper can be created.
Die möglichen und bevorzugten Grenzen für die einzuhaltenden Glättewerte wurden bereits angegeben. Die Wasseraufnahme nach dem Emco-Test nach einer Sekunde sollte im Bereich von 85-25 % liegen, bevorzugt im Bereich von 70-30 %. Der Farbwegschlagtest soll einen Wert von 1,1 bis 0,25, bevorzugt einen Wert von 0,8 bis 0,3 ergeben. Der Glanz gemessen nach Lehmann bei 75° soll mindestens 25 %, bevorzugt aber zwischen 30 und 55 % betragen, um ein nach üblicher Auffassung ausreichendes Glanzerscheinen des Papieres zu ergeben.The possible and preferred limits for the smoothness values to be observed have already been specified. The water intake after the Emco test after one second should be in the range of 85-25%, preferably in the range of 70-30%. The color path impact test should have a value of 1.1 to 0.25, preferably give a value of 0.8 to 0.3. The gloss measured according to Lehmann at 75 ° should amount to at least 25%, but preferably between 30 and 55% a sufficient glossiness of the paper according to the usual opinion surrender.
Die verwendeten Prüfmethoden, insbesondere die Methode zur Glanzmessung, werden weiter unten noch näher erläutert. Der Penetrationstest nach Emco und der Farbwegschlagtest sind so definiert, wie bereits in der EP-A-0 785 307 beschrieben.The test methods used, especially the method for gloss measurement, are explained in more detail below. The penetration test according to Emco and the color path impact test are defined as already in EP-A-0 785 307 described.
Auch das hier beschriebene Papier muß eine für das Offset-Verfahren ausreichende Rupffestigkeit aufweisen, die auf übliche Weise bestimmt und qualitativ beurteilt wird. Auch diesbezüglich wird auf die Ausführungen in der EP-A-0 785 307 verwiesen.The paper described here must also be one for the offset process have sufficient pick resistance, determined in the usual way and is assessed qualitatively. In this regard, too, reference is made to the statements in the EP-A-0 785 307.
Feinteilige Pigmente in der Strichzusammensetzung beschleunigen im allgemeinen die Druckfarbentrocknung (Verkürzung der Farbwegschlagzeit, ausgedrückt durch einen geringeren Densitometerwert) und die Wasseraufnahme. Der Fachmann hat es daher durch die Auswahl bzw. Mischung der Pigmentkörnung in der Hand, beide Größen erfindungsgemäß zu beeinflussen. Ist es bei einer bestimmten Druckmaschinenanordnung möglich, ein Papier zu verdrucken, welches sehr schnelle Farbwegschlagzeiten aufweist, wählt man als Bindemittel für die Streichfarbe vorzugsweise hochaktive synthetische Binder, möglichst in Verbindung mit Polyvinylalkohol. So kann das Bindemittel für eine solche Streichfarbe aus 6-12 % synthetischem Binder und zwischen 1 und 4 % PVA, bezogen auf Streichpigment, bestehen. Wird bei gleichern Wasseraufnahmevermögen eine längere Wegschlagzeit verlangt, kann dies durch zusätzliche Bindemittel in der Strichrezeptur erreicht werden, beispielsweise durch Zugabe von 0,5 bis 1,5 % Carboximethylzellulose (CMC), je nach Zusammensetzung des Streichpigmentes. Wird dem Bindemittel zusätzlich Stärke, im Bereich von etwa 6-10 Gew.-% zur Verzögerung der Farbwegschlagzeit zugegeben, so kann dies auch einen reduzierenden Einfluß auf das Wasseraufnahmevermögen haben.Fine-particle pigments in the line composition accelerate in the general ink drying (shortening the ink path impact time, expressed by a lower densitometer value) and the Water absorption. The specialist therefore has the choice or Mix the pigment grain in hand, both sizes according to the invention influence. Is it possible with a certain printing press arrangement to print a paper that has very fast ink path break times, one chooses preferably highly active as a binder for the coating color synthetic binders, if possible in combination with polyvinyl alcohol. So can the binder for such a coating color from 6-12% synthetic binder and between 1 and 4% PVA, based on coating pigment. Becomes requires a longer strike time with the same water absorption capacity, this can be achieved with additional binders in the line recipe, for example by adding 0.5 to 1.5% carboxymethyl cellulose (CMC), depending on the composition of the coating pigment. Will that Binder additional starch, in the range of about 6-10% by weight Delay of the ink stroke time added, this can also be a have a reducing influence on the water absorption capacity.
Über den vom Feinheitsgrad der verwendeten, glanzentwickelnden Pigmente mitbeeinflußten Bindemittelgehalt und -verschnitt ist dem erforderlich hohen Wasseraufnahmevermögen, der gewünschten Druckfarbentrocknungszeit und einer guten Strichabbindung Rechnung zu tragen. Darüber hinaus ist zu berücksichtigen, daß auch mit steigendem Bindemittelgehalt die Papierglanzwerte abfallen. Insgesamt sollte der Bindemittelgehalt in der Streichfarbe 18 Gew.-%, bezogen auf Streichpigment, nicht überschreiten. Die höheren Werte unterhalb dieser Grenze kommen dann in Frage, wenn zusätzlich zu synthetischen Bindern Stärke und/oder CMC eingesetzt werden.About the fineness of the gloss-enhancing pigments used Influenced binder content and blend is the required high Water absorption capacity, the desired ink drying time and to take good line binding into account. Beyond that too take into account that even with increasing binder content Paper gloss values drop. Overall, the binder content in the The coating color should not exceed 18% by weight, based on the coating pigment. The higher values below this limit are considered if starch and / or CMC can be used in addition to synthetic binders.
In der Papierbeschichtung werden im allgemeinen folgende Bindemitteltypen eingesetzt, wobei ihre Reihenfolge abnehmende Bindewirkung angibt: Kunststoffdispersionen (z.B. Styrol-Butadien, Acrylat, Styrol-Acrylat), Polyvinylalkohol, Protein oder Kasein, Stärke. Hochaktive Bindemittel sind die genannten Kunststoffdispersionen, auch in Kombination mit PVA. Für bestimmte Binder kann der Zusatz eines Vernetzungsmittels erforderlich sein. The following types of binder are generally used in paper coating used, their order indicating decreasing binding effect: Plastic dispersions (e.g. styrene-butadiene, acrylate, styrene-acrylate), Polyvinyl alcohol, protein or casein, starch. They are highly active binders mentioned plastic dispersions, also in combination with PVA. For certain binders may require the addition of a crosslinking agent.
Wird in bestimmten Anwendungsfällen nur mit hochaktiven, synthetischen Bindern gearbeitet, kann der Gesamtbindemittelanteil unter 16 Gew.-%, bezogen auf Streichpigment, vorzugsweise sogar unter 14 Gew.-% liegen. PVA hat neben seiner Bindekraft noch die Eigenschaft, irreversibel auf Flächen aufzuziehen, die ein relativ inertes Reaktionsvermögen aufweisen, wie dies bei dem im Rahmen der Erfindung eingesetzten Calciumkarbonat gegeben ist.Is used in certain applications only with highly active, synthetic Worked binders, the total binder content can be less than 16 wt .-%, based on coating pigment, preferably even less than 14 wt .-%. In addition to its binding power, PVA also has the property of being irreversible Raise areas that have a relatively inert reactivity, such as this is the case with the calcium carbonate used in the context of the invention is.
Die Bindemittelanteile können wie folgt sein:
Nachdem bei den klassischen Streichpigmenten mit steigendem Feinheitsgrad
- die Glanzentwicklung steigt,
- die Wegschlagzeit fällt und
- sich der Bindemittelbedarf (höhere Pigmentoberfläche) erhöht, müssen die Pigmente entsprechend den Anforderungen der Erfindung ausgewählt und zusammengesetzt werden.
- the gloss development increases
- the strike time falls and
- if the binder requirement (higher pigment surface area) increases, the pigments must be selected and composed in accordance with the requirements of the invention.
Pigmente mit hoher Papierglanzentwicklung sind
Diese Produktgruppe erhöht zwar die Papierglanzentwicklung, reduziert jedoch die Naßrupffestigkeit und verteuert die Strichkosten.
Although this product group increases paper gloss development, it reduces wet pick resistance and increases coating costs.
Es hat sich als vorteilhaft erwiesen, mit Pigmentverschnitten zu arbeiten, wodurch die Vorzüge der Einzelpigmente genutzt und die Nachteile reduziert werden können. Zur Steuerung der Strichqualität kann aus diesem Grund auch der Einsatz von flächigen Pigmenten mit geringerer Kornfeinheit sinnvoll sein. So wird z.B. durch die Mitverwendung von einem Kaolin mit flächigen Teilchen, der Qualität SPS der Firma ECC mit einem Feinheitsgrad von 80 % < 2 µm und einem Formfaktor von 21 der Coating hold-out hoch feinteilhaltiger Farbsysteme verbessert, wodurch die Glanzentwicklung steigt und die Wegschlagzeit verlängert wird.It has proven to be advantageous to work with pigment blends, whereby the advantages of the individual pigments are used and the disadvantages are reduced can be. For this reason, you can also control the stroke quality it is advisable to use flat pigments with a smaller grain size. For example, through the use of a kaolin with flat Particles, the quality PLC from ECC with a degree of fineness of 80% <2 µm and a form factor of 21 the coating hold-out high Color systems containing fine particles improved, which increases the gloss development and the strike time is extended.
Im übrigen können die verwendeten Streichfarben übliche Zusätze, wie etwa bis zu 1,5 Gew.-% Melaminformaldehydharz als Naßfestmittel, bis zu 0,4 % Carboxymethylcellulose (CMC) als Lösung, optischen Aufheller und/oder Chemikalien zur pH-Wert-Einstellung, wie NaOH enthalten. In addition, the coating colors used can be conventional additives, such as up to 1.5% by weight melamine formaldehyde resin as wet strength agent, up to 0.4% Carboxymethyl cellulose (CMC) as a solution, optical brightener and / or Chemicals for pH adjustment, such as containing NaOH.
Die erfindungsgemäßen Streichfarben werden in wässriger Aufschlämmung bei Feststoffgehalten von 30-65 Gew.-% trocken gedachter Masse verarbeitet. Als Auftragsverfahren kommen sowohl Schaberauftragsverfahren, wie Inverted Blade, Jet Flow als auch Walzenauftragseinrichtungen, wie der Massey-Coater und auch Filmpressen, wie die Filmpresse von Jagenberg, der Speedsizer oder die Metering Size Press von Beloit in Frage. Das erfindungsgemäße Papier ist daher von der Art des Strichauftragsverfahrens im wesentlichen unabhängig, obwohl die eine oder andere Auftragsmethode unter betimmten Bedingungen zu einem besseren Ergebnis führen kann. Bekanntlich gleichen Schaberstreichverfahren die Papieroberfläche aus und führen daher lokal zu unterschiedlich dickem Strichauftrag, während Walzenstreicheinrichtungen eher einen gleichmäßigen Strichauftrag erzeugen, was für das Farbwegschlagverhalten unter Umständen positiv sein kann. Von Bedeutung kann auch eine schonende Strichtrocknung sein, damit nicht unerwünschte Bindemittelmigrationserscheinungen die angestrebte gleichmäßige Mikrokapillarität des Strichauftrages verschlechtern.The coating colors according to the invention are added in an aqueous slurry Solids contents of 30-65 wt .-% processed dry mass processed. As Application procedures come both scraping order procedures, as inverted Blade, Jet Flow as well as roller applicators like the Massey-Coater and also film presses, such as the Jagenberg film press, the Speedsizer or the Metering Size Press from Beloit in question. The paper according to the invention is therefore essentially independent of the type of stroke application process, although one or the other order method under certain conditions too can lead to a better result. As is known, the same Scraper coating processes the paper surface and therefore lead locally differently thick line application, while roller coating devices rather create a uniform stroke, what for Ink path behavior can be positive under certain circumstances. Significant can also be a gentle coat drying, so that not undesirable Binder migration phenomena the desired uniform Deteriorate microcapillarity of the coat application.
Bei einfach gestrichenen Papieren werden erfindungsgemäß trocken gedachte Strichmengen mit einer flächenbezogenen Masse von mehr als 4 g/m2 und Seite auf das Rohpapier aufgetragen. Bevorzugt sind flächenbezogene Massen von 6-12 g/m2 und Seite, typischerweise etwa 7 g/m2 und Seite.In the case of simply coated papers, coating amounts intended to be dry are applied according to the invention with a mass per unit area of more than 4 g / m 2 and side to the base paper. Area-based masses of 6-12 g / m 2 and side are preferred, typically about 7 g / m 2 and side.
Die Erfindung ist jedoch nicht auf einfach gestrichene Papiere beschränkt. Sie ist auch auf doppelt gestrichene Papiere anwendbar. Doppelstriche liegen bei einer flächenbezogenen Masse von mindestens 15 g/m2 und Seite, typischerweise 20 g/m2 und Seite, wobei sich die Streichmasse in etwa gleichmäßig auf beide Strichaufträge verteilt. Entscheidend für die erfindungsgemäßen Eigenschaften des Papieres ist offenbar der Deckstrich. Wenn im Rahmen dieser Beschreibung von einem Strichauftrag die Rede ist, ohne daß dieser näher bezeichnet ist, so ist bei einfach gestrichenen Papieren der einzige Strichauftrag und bei doppelt gestrichenen Papieren der Deckstrich gemeint. Der Vorstrich beim Doppelstrich ist im Rahmen dieser Beschreibung immer ausdrücklich als solcher bezeichnet. Der Vorstrich kann eine vom Deckstrich abweichende Zusammensetzung haben.However, the invention is not limited to simply coated papers. It is also applicable to double coated papers. Double strokes are based on a mass per unit area of at least 15 g / m 2 and side, typically 20 g / m 2 and side, the coating slip being distributed approximately evenly between the two coat orders. The top coat is obviously decisive for the properties of the paper according to the invention. If, within the scope of this description, there is talk of a stroke application without this being specified, the single stroke application is meant for single-coated papers and the cover stroke for double-coated papers. The primer in the double stroke is always expressly designated as such in the context of this description. The primer can have a different composition from the top coat.
Es kann zweckmäßig sein, das Rohpapier vor dem Auftragen des einzigen Striches oder des Vorstriches vorzuglätten, beispielsweise in einem Maschinenglättwerk am Ende der Papiermaschine, welches auch mit einem sog. Soft-Nip ausgerüstet sein kann.It may be appropriate to apply the base paper before applying the only one Pre-smooth the stroke or the primer, for example in one Smoothing machine at the end of the paper machine, which also with a So-called soft nip can be equipped.
Die Erfindung ist nicht auf die Verwendung eines bestimmten Rohpapieres beschränkt. So können sowohl holzfreie wie auch holzhaltige Rohpapiere und solche mit einem erheblichen Anteil an aufbereiteten Altpapierfasern Verwendung finden. So ist beispielsweise ein holzfreies Rohpapier geeignet, dessen Eintrag für die Papierherstellung in trocken gedachten Anteilen etwa 78 % Zellstoff, etwa 20 % mineralischen Füllstoff, etwa 1 % Stärke und etwa 1 % sonstige Hilfsmittel enthält.The invention is not based on the use of any particular base paper limited. So both wood-free and wood-containing base papers and those with a significant proportion of processed waste paper fibers Find use. For example, a wood-free base paper is suitable its entry for papermaking in dry portions 78% pulp, about 20% mineral filler, about 1% starch and about Contains 1% other aids.
Allein aus Kostengründen werden jedoch holzhaltige Rohpapiere bevorzugt, die darüber hinaus noch einen Anteil an aufbereiteten Altpapierfasern enthalten. Holzhaltige Rohpapiere weisen zusätzlich in der Regel auch drucktechnische Vorteile auf, beispielsweise eine höhere Opazität. Der Faserstoffeintrag für ein holz- und altpapierhaltiges Rohpapier kann beispielsweise, bezogen auf trocken gedachten Gesamtfaserstoff, aus etwa 20 % Zellstoff, 20 % Holzstoff und 60 % Altpapierstoff bestehen. Bezogen auf Faserstoff, kann der Stoffeintrag ferner bis zu etwa 50 % mineralischen Füllstoff enthalten, was etwa einem Anteil von 1/3 der Stoffzusammensetzung entspricht. Bekannterweise bleibt diese Füllstoffmenge im Herstellungsprozeß nicht vollständig im Papier, sondern gelangt teilweise in das Prozeßwasser.For reasons of cost alone, however, wood-containing base papers are preferred also contain a proportion of processed waste paper fibers. Wood-containing base papers usually also have printing technology Benefits, such as higher opacity. The fiber entry for a Raw paper containing wood and waste paper can, for example, refer to dry imaginary total fiber, from about 20% pulp, 20% wood pulp and 60 % Of waste paper. Based on fiber, the material input can also contain up to about 50% mineral filler, which is about one Proportion of 1/3 of the substance composition corresponds. As is known, remains this amount of filler in the manufacturing process is not completely in the paper, but partly gets into the process water.
Wenn im Rahmen dieser Beschreibung von Holzstoffen als Faserstoffkomponente die Rede ist, so kann es sich dabei um alle solchen Stoffe handeln, die üblicherweise in der Papiertechnologie unter diesem Ausdruck verstanden werden, nämlich beispielsweise Holzschliff, thermomechanischer Holzstoff (TMP), chemisch-thermisch-mechanischer Holzstoff (CTMP) usw..If as part of this description of wood pulp Fibrous component is mentioned, it can be all of these Trade substances that are commonly used in paper technology under this Expression can be understood, namely for example ground wood, thermomechanical wood pulp (TMP), chemical-thermal-mechanical Wood pulp (CTMP) etc.
Eine weitere wichtige Voraussetzung für ein akzeptables Druckergebnis beim Bedrucken eines Papieres mit Coldset-Druckfarben ist neben einer zufriedenstellenden Trocknung der Druckfarben die Dimensionsstabilität des Papieres. Da beim Wegschlagen der Coldset-Druckfarben Wasser auch bis in das den Strich tragende Rohpapier eindringt, hat dies einen Einfluß auf die Faserbindung zueinander und beeinflußt somit die Dimensionsstabilität des Papieres. Dieser Einfluß ist gegenüber normalem Zeitungsdruck-Naturpapier stärker, da bei einem gestrichenen Papier mit vergleichbarer flächenbezogener Masse dem Rohpapier als Trägerpapier für den Strich nur ein entsprechend geringerer Massenanteil zukommt, d.h., das Rohpapier dünner ist. Die Dimensionsstabilität eines Papieres unter Feuchtigkeitseinfluß kann durch Zusatzstoffe, beispielsweise Stärke, verbessert werden. So ist es üblich, einem Rohpapiereintrag etwa 0,5 bis 2.0% Stärke zuzusetzen. Für Papiere, die auf offenen Langsieb-Papiermaschinen oder auch auf sog. Hybrid-Formern hergestellt werden, bei denen ein oberes Entwässerungssieb erst nach erfolgter Blattbildung auf dem Langsieb mit diesem zusammengeführt wird, und die als Folge dieses Herstellungsverfahrens ein relativ günstiges Faserorientierungsverhältnis aufweisen, nämlich ein Quer-zu-Längsverhältnis von etwa 1:2 bis maximal 1:2,5, reicht die Dimensionsstabilität für ihre Verwendung im Coldset-Druckverfahren möglicherweise bereits aus, ohne daß dem Rohpapier überhaupt Stärke zugesetzt wird. Wegen der vornehmlichen Faserorientierung in Produktionsrichtung, d.h. in Längsrichtung des Papieres, bestehen die Mängel in der Dimensionsstabilität im wesentlichen in einer Querkontraktion, die durch den Papierzug in der Verarbeitungsmaschine noch erhöht wird. Another important prerequisite for an acceptable print result at Printing on paper with coldset inks is next to one satisfactory drying of the inks the dimensional stability of the Paper. Since when the coldset printing inks are knocked away, water also reaches up to the base paper carrying the line penetrates, this has an influence on the Fiber bond to each other and thus affects the dimensional stability of the Paper. This influence is compared to normal newsprint natural paper stronger because of a coated paper with comparable area-related Only measure the base paper as a backing paper for the line lower mass fraction, i.e. the base paper is thinner. The Dimensional stability of a paper under the influence of moisture can Additives, such as starch, can be improved. So it is common for one Add raw paper input about 0.5 to 2.0% starch. For papers on open fourdrinier paper machines or also on so-called hybrid formers are produced in which an upper drainage sieve only after Sheet formation on the Fourdrinier wire is merged with this, and which as Follow this manufacturing process to be a relatively inexpensive one Have fiber orientation ratio, namely a cross-to-length ratio from about 1: 2 to a maximum of 1: 2.5, the dimensional stability ranges for your Use in the coldset printing process may already be without Starch is added to the base paper at all. Because of the primary Fiber orientation in the direction of production, i.e. in the longitudinal direction of the paper, the defects in dimensional stability consist essentially in one Cross contraction caused by the paper draw in the processing machine still is increased.
Massendruckpapiere werden wirtschaftlich heutzutage nur auf sehr schnellaufenden Papiermaschinen hergestellt, die nach dem derzeitigen Stand der Technik ausschließlich sog. Gap-Former verwenden, bei denen die Blattbildung im Zusammenlaufspalt zweier Siebe erfolgt. Bei auf solchen modernen Maschinen erzeugten Papieren ist das Quer-zu-Längs-Verhältnis der Faserorientierung wesentlich schlechter und bewegt sich im Bereich von etwa 1:3 bis 1:4. Dies hat eine wesentlich geringere Querstabilität solche Papiere zur Folge. Die Dimensionsstabiität von auf Gap-Formern hergestellten Rohpapieren kann ausreichend positiv beeinflußt werden, wenn man dem Rohpapiereintrag mehr als 1 % bis maximal 2 %, typischerweise etwa 1,5 % Stärke zusetzt. Bevorzugt ist der Einsatz einer hochkationischen Stärke. Ihr Effekt besteht darin, daß bei Zugabe von etwa 1,5 % dieser Stärke zum Stoffeintrag etwa 1,4 % im Rohpapier wiederzufinden sind, was auf eine erstaunlich hohe Retention der Stärke bei der Blattbildung hinweist, ohne die auch höhere Stärkezugabemengen in den Stoffeintrag ohne wesentliche Wirkung auf das Rohpapier bleiben und bestenfalls die Abwasserbelastung und die Kosten erhöhen.Bulk printing papers are economically very difficult nowadays high-speed paper machines manufactured to the current state the technology use only so-called gap formers, in which the Sheet formation occurs in the confluence of two screens. With such Papers produced by modern machines is the cross-to-length ratio of the Fiber orientation much worse and is in the range of about 1: 3 to 1: 4. This has a much lower transverse stability of such papers result. The dimensional stability of those made on gap formers Base papers can be influenced sufficiently positively if you look at that Raw paper input more than 1% to a maximum of 2%, typically about 1.5% Starches add. The use of a highly cationic starch is preferred. you The effect is that with the addition of about 1.5% of this starch Substance input about 1.4% can be found in the base paper, which indicates a astonishingly high retention of starch in leaf formation indicates without the also higher amounts of starch added to the material input without essential Effect on the base paper and at best the wastewater pollution and increase the cost.
Da das erfindungsgemäße Papier in erster Linie den LWC-Bereich im Coldset-Verfahren abdecken soll, liegen die flächenbezogenen Massen des fertigen Papieres im Bereich von 40-80 g/m2, bevorzugt sind Massen von 54 und 60 g/m2.Since the paper according to the invention is primarily intended to cover the LWC range in the coldset process, the mass per unit area of the finished paper is in the range from 40 to 80 g / m 2 , preferably from 54 to 60 g / m 2 .
Der übliche Weg zur Fertigung von glänzenden Papierqualitäten sieht nach dem Streichprozeß einen weiteren Arbeitsgang vor, die Satinage. Diese mechanische Oberflächenbehandlung wird bei herkömmlichen LWC-Papieren an einem 12-Walzen-Kalander unter hohem Druck (bis 350 KN/m) und bei hohen Temperaturen (bis 100°C) vorgenommen. Bei dieser Prozedur wird das Papier stark komprimiert, wodurch die Oberflächenglätte steigt sowie das Volumen abnimmt, Effekte, die konträr zu den Coldset-Qualitätsanforderungen sind. Zur Einhaltung der für diesen erfindungsgemäßen Papiereinsatzbereich geforderten Qualitätsdaten ist lediglich eine schwache Satinage möglich, über die trotzdem die geforderte Glanzentwicklung erzielt wird. Bekk-Glättewerte von 250, insbesondere von 300 bis möglichst nicht über 600 sec zeigen noch die geforderte Mikrokapillarität, über die eine hohe Wasserpenetration sichergestellt wird und Glanzwerte im Bereich von 30-50 % erzielbar sind.The usual way to produce glossy paper grades looks another step before the coating process, the satin finish. This Mechanical surface treatment is used with conventional LWC papers on a 12-roll calender under high pressure (up to 350 KN / m) and at high temperatures (up to 100 ° C). With this procedure it will Paper highly compressed, which increases the surface smoothness and that Volume decreases, effects contrary to the coldset quality requirements are. To comply with the paper application area for this invention required quality data is only a weak satin possible over which nevertheless achieves the required gloss development. Bekk smoothness values from 250, in particular from 300 to possibly not more than 600 sec still show the required microcapillarity, through which a high water penetration is ensured and gloss values in the range of 30-50% can be achieved.
Die erfindungsgemäße Herstellung eines Papieres mit zwar üblicherweise ausreichendem Glanz, aber verhältnismäßig geringer Satinage und entsprechend geringer Glätte führt zu einem Druckpapier, welches gegenüber hochsatinierten, glänzenden Papieren neben seiner Coldset-Eignung zusätzlich noch folgende Vorteile aufweist:
- höheres spezifisches Volumen
- höhere Steifigkeit
- höhere Dimensionsstabilität, damit
- verbesserte Passerhaltung,
- höhere Bahnstabilität heim Verdrucken,
- geringeren Helligkeits- und Weißeverlust,
- geringere Fasermelierung,
- höhere Opazität.
- higher specific volume
- higher rigidity
- higher dimensional stability, so
- improved passport maintenance,
- higher web stability when printing,
- less loss of brightness and white,
- less fiber mottling,
- higher opacity.
Neben dem klassischen Superkalander, bei dem zur Einstellung dieser niedrigen Oberflächenglätten nicht alle Walzen-Nips erforderlich sind, sind weitere online- und offline-Glättaggregate zur Papierausrüstung geeignet, wie z.B. Soft- und Janus-Kalander.In addition to the classic super calender, in which to adjust this Low surface smoothing does not require all roller nips other online and offline smoothing units suitable for paper finishing, such as e.g. Soft and Janus calenders.
Insoweit in dieser Beschreibung nichts anderes angegeben ist, sind Prozentangaben, auch wenn dies nicht ausdrücklich erwähnt ist, immer als Gewichtsprozente zu verstehen. Ferner sind, wenn nichts anderes speziell angegeben ist, die prozentualen wie auch anderen Mengen immer auf die trocken gedachte Komponente bezogen. In diesem Zusammenhang bezieht sich auch die Angabe "otro" auf einen ofentrockenen Zustand. Unless otherwise stated in this description Percentages, even if this is not expressly mentioned, always as To understand percentages by weight. Furthermore, if nothing else is special is given, the percentage as well as other quantities always on the Covered dry component. In this context refers also the indication "otro" to an oven-dry condition.
Zur Messung der unmittelbaren Wasseraufnahme bzw. Penetration einer Papierprobe dient das Dynamische Penetrationsmeßgerät DPM 27 der Firma emco Elektronische Meß- und Steuerungstechnik GmbH in 04347 Leipzig, Gorkistraße 31. Der Prüfmethode zugrunde liegt die Gerätebeschreibung und Bedienungsanleitung dieser Firma mit Stand vom 13.03.1995. Gemessen wird der Abfall des Ultraschall-Transmissionswertes, ausgehend von dem Meßwert der nicht durchtränkten Probe, der gleich 100 % gesetzt wird, über der Zeit. Angegeben wird im jeweiligen Zeitpunkt der Meßwert als Prozent des gleich 100 % gesetzten Ausgangswertes. Im Grunde genommen handelt es sich hierbei um einen dynamischen Test, bei dem eine Kurve des Transmissionsabfalles über der Zeit aufgetragen wird. Diese Kurve fällt erst steil ab, biegt dann um und nähert sich bei Meßzeiten über 6 sec mehr oder minder asymptotisch einem bestimmten Transmissionswert. Für das Verhalten des Papieres ist im wesentlichen die Wasseraufnahme im ersten Augenblick entscheidend, weswegen für den Zweck dieser Beschreibung die Meßwerte nach einer Zeit von 1 sec angegeben sind. Gewisse Bedeutung zur Beurteilung haben aber auch noch die Meßwerte nach 3 sec, einem Zeitpunkt, bei dem der steile Kurvenabfall in etwa in die Horizontale umschwenkt und sich somit ein gewisser Sättigungspunkt ergibt. Diese Prüfmethode wird im folgenden als emco-Test bezeichnet und die Werte werden in Prozent angegeben (Prozent Resttransmission, ausgehend von 100 %).To measure the immediate water absorption or penetration of a The dynamic penetration meter DPM 27 from the company serves as paper sample emco Elektronische Meß- und Steuerungstechnik GmbH in 04347 Leipzig, Gorkistraße 31. The test method is based on the device description and Operating instructions of this company as of 13.03.1995. Is measured the drop in the ultrasound transmission value based on the measured value the not soaked sample, which is set equal to 100%, over time. At each point in time, the measured value is given as a percentage of the same 100% set initial value. Basically it is a dynamic test in which a curve of the Transmission drop is applied over time. This curve is only falling steep, then bends and approaches more or at measuring times over 6 sec less asymptotic a certain transmission value. For behavior of paper is essentially water absorption at first decisive, which is why the measured values for the purpose of this description after a time of 1 sec. Certain importance for assessment but also have the measured values after 3 seconds, a time at which the steep curve drop swings roughly into the horizontal and thus a certain saturation point results. This test method is referred to below as emco test and the values are given in percent (percent Residual transmission, starting from 100%).
Zur Bestimmung des Farbwegschlagens wird ein im Unternehmen der Anmelderin modifizierter Wegschlagtest unter Verwendung der Mehrzweck-Probedruckmaschine, System Dr. Dürner, der Firma Prüfbau Dr.-Ing. Herbert Dürner, Peissenberg, verwendet. Beim Wegschlagtest wird unter definierten Bedingungen ein Probedruck mit einer Standarddruckfarbe erzeugt, der nach einer definierten Zeit unter Druck mit einem Gegenpapier in Berührung gebracht wird. Die auf das Gegenpapier abgedruckte Druckfarbenintensität wird mit einem Densitometer gemessen. Im einzelnen wird beim Konterdruckversuch, auch als Abschmierversuch oder Wegschlagtest bezeichnet, eine definierte Menge Druckfarbe auf einen Papierstreifen aufgetragen, der danach in vorgegebenen Zeitabständen abschnittweise mit einem Gegenprobestreifen überrollt wird. Die an den Gegenprobestreifen abgegebenen Farbmengen werden optisch ermittelt und erlauben Rückschlüsse auf das Farbaufnahme-Verhalten und Stapelverhalten des Probestreifens.In order to determine the color deflection, a company Applicant's modified throw-away test using the multi-purpose test printing machine, System Dr. Dürner, the company Prüfbau Dr.-Ing. Herbert Dürner, Peissenberg, used. The throw-away test is defined under Conditions, a test print with a standard printing ink is produced, according to in contact with a counter paper for a defined time brought. The ink intensity printed on the backing paper is measured with a densitometer. In detail, the Counter-pressure test, also as a lubrication test or a kick-off test referred to, a defined amount of printing ink on a paper strip applied, which then in sections at predetermined intervals is rolled over a counter test strip. The on the counter test strips The quantities of paint delivered are determined optically and allow conclusions to be drawn on the color recording behavior and stacking behavior of the test strip.
Einzelheiten der Versuchsdurchführung sind einer ausführlichen Beschreibung zur Mehrzweck-Probedruckmaschine der Firma prüfbau, Dr.-Ing. Herbert Dürner, Aich 17-23, D-82380 Peißenberg/München, vom 26.9.1972, insbesondere unter Ziffer 10.5 und 14.2 zu entnehmen.Details of the test procedure are a detailed description to the multi-purpose test printing machine from Prüfbau, Dr.-Ing. Herbert Dürner, Aich 17-23, D-82380 Peißenberg / Munich, from September 26, 1972, in particular under 10.5 and 14.2.
Danach wird für gestrichene Papiere ein Farbangebot von 0,3 cm3, eine Verreibezeit von 30 sec im Farbwerk und von 30 sec für die Druckform empfohlen. Der Anpreßdruck beim Andruck und Konterdruck soll jeweils 200 N/cm betragen, d.h. 800 N bei einer Druckformbreite von 4 cm. Es soll die Wegschlagtestfarbe Nr. 52 0068 der Farbenfabriken Michael Huber, München, verwendet werden. Der Konterdruck soll nach 30, 60, 120 und 240 sec durchgeführt werden. Als Druckgeschwindigkeit werden 0,5 m/sec empfohlen. Als Probedruckpapier wird ein Normpapier mit der Bezeichnung APCO II/II der Firma Scheufelen verwendet.Afterwards, a color range of 0.3 cm 3 , a rubbing time of 30 seconds in the inking unit and 30 seconds for the printing form is recommended for coated papers. The contact pressure for pressure and counter pressure should be 200 N / cm each, ie 800 N with a printing form width of 4 cm. The Away Test Paint No. 52 0068 from the Michael Huber paint factory in Munich is to be used. The counter print should be carried out after 30, 60, 120 and 240 sec. The recommended print speed is 0.5 m / sec. A standard paper called APCO II / II from Scheufelen is used as the test printing paper.
Im vorliegenden Fall wurden die Versuche mit doppelter Druckgeschwindigkeit im übrigen mit den angegebenen Werten durchgeführt. Ausgewertet wurden die Farbübertragungen auf den Gegenprobestreifen, die beim Konterdruck nach 30 sec erreicht werden.In the present case, the experiments were carried out at double the printing speed otherwise carried out with the specified values. Were evaluated the color transfers on the counter test strips, which after the counterprint 30 seconds can be reached.
Zur Glanzmessung wird das Glanzmeßgerät LGDL-02 Labor der Firma Lehmann, Meß- und Regeltechnik in Biel, Schweiz, verwendet. Verwendet wird der Glanzmeßkopf LGML-02 für Labor mit einem Einstrahlungs- und Abstrahlungswinkel von 75°. Die benutzten Prüfnormen für die Glanzmessung sind E DIN 54502 Prüfung von Papier und Pappe, Glanzbeurteilung ebener Papier- und Pappeoberflächen mit Hilfe von Reflektometerwerten, und Zellcheming Merkblatt V/22/72 Prüfung von Papier, Karton und Pappe; Messung des Glanzes.The gloss meter LGDL-02 laboratory from the company is used for gloss measurement Lehmann, measurement and control technology in Biel, Switzerland. Used is the gloss measuring head LGML-02 for laboratory with an irradiation and Beam angle of 75 °. The test standards used for gloss measurement are E DIN 54502 inspection of paper and cardboard, gloss assessment even Paper and cardboard surfaces with the help of reflectometer values, and Zellcheming Merkblatt V / 22/72 Testing paper, cardboard and cardboard; Measurement of the gloss.
Es folgen anschließend einige Ausführungsbeispiele.A few exemplary embodiments then follow.
Auf einer schnellaufenden Papiermaschine mit einem Doppelsiebformer (Gap-Former)
wurde bei einer Maschinengeschwindigkeit von etwa 1.300 m/min ein
Rohpapier aus folgendem Stoffeintrag erzeugt:
Mit dem Rohpapier gemäß diesem Beispiel wurden verschiedene Streichversuche durchgeführt. With the base paper according to this example, various Brush tests carried out.
Die im folgenden wiedergegebenen Versuchsdaten sind diejenigen eines
Streichversuches mit einer hoch kaolinhaltigen Streichfarbe und diejenigen
eines Streichversuches mit einer Streichfarbe, die ein rhomboedrisches,
präzipitiertes Calciumkarbonat als Pigment enthielt. In der folgenden Tabelle
finden sich für beide Streichversuche die Angaben über die
Streichfarbenrezeptur, den Strichauftrag und die Papierprüfergebnisse.
In der Textspalte der Tabelle sind bei der Streichfarbenrezeptur für die einzelnen Bestandteile rechts unter der Überschrift "FG" die jeweiligen Feststoffgehalte der Produkte angegeben. Im übrigen enthält die Textspalte rechts die Maßeinheiten für die Meßwerte. In den Wertespalten sind für die Streichfarbenrezeptur jeweils trocken gedachte Teile angegeben. Zu den bei den Versuchen verwendeten Streichpigmenten werden zusätzlich noch folgende Angaben gemacht:In the text column of the table are the coating color recipe for the the individual components on the right under the heading "FG" Solids contents of the products indicated. Otherwise contains the text column on the right the units of measurement for the measured values. In the value columns are for Coating color recipe specified dry parts. To the at The coating pigments used in the experiments are also followed by the following Information given:
Hierbei handelt es sich um ein Kaolin für Papierstreichzwecke der Firma Cadam, Monte Dourado, Brasilien, vertrieben durch die Firma Kaolin International, NL-3447 Gv Woerolen mit einem Feinheitsgrad von 96 % < 2 µm. Die Naß-Siebrückstände von Teilchen > 95 µm betragen 0,0035 %. Der Weißgehalt nach ISO 2740 beträgt 86 %. This is a kaolin for paper coating purposes from the company Cadam, Monte Dourado, Brazil, distributed by Kaolin International, NL-3447 Gv Woerolen with a fineness of 96% <2 µm. The wet sieve residue of particles> 95 µm is 0.0035%. Of the White content according to ISO 2740 is 86%.
Diese Qualität ist ein Kaolin mit flächigen Teilchen der Firma ECC International. Der Formfaktor dieses Pigmentes beträgt 21, der Feinheitsgrad 80 %, der Teilchen < 2 µm und 66 % < 1 µm.This quality is a kaolin with flat particles from ECC International. The form factor of this pigment is 21, the fineness 80%, of the particles <2 µm and 66% <1 µm.
Dieses Pigment ist ein präzipitiertes Calciumkarbonat mit rhomboedrischer Kristallstruktur der Firma Faxe Kalk, DK-1017 Copenhagen K. Das Pigment hat einen Feinheitsgrad von 0,5 µm.This pigment is a precipitated calcium carbonate with a rhombohedral Crystal structure from Faxe Kalk, DK-1017 Copenhagen K. The pigment has a fineness of 0.5 µm.
Die Versuchsergebnisse zeigen, daß bei bewußt eingestellten Glätten von etwa 500 sec Bekk Glanzwerte von 41 % für die hoch kaolinhaltige Streichfarbe und 35 % für die Streichfarbe mit PCC erreicht wurden. Die Wasseraufnahmemessung nach dem Emco-Test betrug 48 bzw. 51 % und liegt somit im bevorzugten Bereich. Das gleiche gilt für den Farbwegschlagtest mit Werten von 0,4 bzw. 0,3.The test results show that with consciously set smoothing of about 500 sec Bekk gloss values of 41% for the high kaolin coating color and 35% for the coating color with PCC were achieved. The Water absorption measurement after the Emco test was 48 and 51%, respectively thus in the preferred range. The same applies to the color path impact test with Values of 0.4 or 0.3.
Die Rupffestigkeit war mit der Benotung 2 als gut zu bezeichnen. Bei Anwendung einer geringeren Glättung bei den gleichen Papieren, die zu Glättewerten von etwa 250 sec Bekk führten, konnten bei den verwendeten Strichzusammensetzungen noch keine ausreichenden Glanzwerte erzielt werden. Mit einem Zusatz von 10 % synthetischem Pigment zu den Streichpigmenten konnte zwar ein etwas höherer Glanz erzielt werden, die Naßrupffestigkeit als Maß für die Offset-Eignung ließ jedoch nach.The pick resistance was rated as good with grade 2. At Apply less smoothing to the same papers that are Smoothness values of about 250 sec Bekk could lead to the used Line compositions have not yet achieved sufficient gloss values become. With the addition of 10% synthetic pigment to the Coating pigments were able to achieve a somewhat higher gloss However, wet pick resistance as a measure of the suitability for offset decreased.
Bei Satinage eines coldset-geeigneten Mattpapieres mit 100 % gemahlenem Calciumkarbonat als Streichpigment konnte auch bei Satinage auf eine Glätte von 500 sec Bekk kein ausreichender Glanz erzielt werden. Der Glanz lag bei etwa nur 18 %. Die Opazität der beiden Versuchspapiere mit Werten im Bereich von 92 % entspricht etwa der Opazität eines vergleichbaren Mattpapieres und ist damit als sehr gut zu bezeichnen.When satinizing a coldset-suitable matt paper with 100% ground Calcium carbonate as a coating pigment was able to smoothen even when satinizing sufficient gloss can not be achieved from 500 sec. The shine was included about only 18%. The opacity of the two test papers with values in The 92% range corresponds approximately to the opacity of a comparable one Matt paper and can therefore be described as very good.
Claims (18)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19745082A DE19745082A1 (en) | 1997-10-11 | 1997-10-11 | Painted roll paper with coldset suitability |
DE19745082 | 1997-10-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0908560A1 true EP0908560A1 (en) | 1999-04-14 |
EP0908560B1 EP0908560B1 (en) | 2002-11-20 |
Family
ID=7845332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98118888A Expired - Lifetime EP0908560B1 (en) | 1997-10-11 | 1998-10-06 | Coated roll printing paper suitable for printing with cold-set inks |
Country Status (11)
Country | Link |
---|---|
US (1) | US6197155B1 (en) |
EP (1) | EP0908560B1 (en) |
JP (1) | JP3050381B2 (en) |
KR (1) | KR19990036956A (en) |
AT (1) | ATE228187T1 (en) |
DE (2) | DE19745082A1 (en) |
DK (1) | DK0908560T3 (en) |
ES (1) | ES2186074T3 (en) |
NO (1) | NO325126B1 (en) |
NZ (1) | NZ332227A (en) |
PT (1) | PT908560E (en) |
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US6391155B1 (en) * | 1997-10-11 | 2002-05-21 | Haindl Papier Gmbh | Coated web printing paper suitable for cold-set offset printing |
US6547929B2 (en) * | 2000-04-12 | 2003-04-15 | Rohm And Haas Company | Paper having improved print quality and method of making the same |
JP4848593B2 (en) * | 2001-04-27 | 2011-12-28 | 王子製紙株式会社 | Matte coated paper for printing |
US20050089651A1 (en) * | 2002-01-16 | 2005-04-28 | Koji Okomori | Method for producing coated paper for printing |
EP1467022A4 (en) * | 2002-01-16 | 2008-07-30 | Jujo Paper Co Ltd | Method for producing coated paper for printing |
US20030173045A1 (en) * | 2002-03-18 | 2003-09-18 | Philip Confalone | Liquid starch dispersions for coated paper and paperboard |
FI20020521A0 (en) † | 2002-03-19 | 2002-03-19 | Raisio Chem Oy | Paper surface treatment composition and its use |
AU2003207551A1 (en) * | 2002-05-03 | 2003-11-17 | David O. Cummings | Paper coating pigments |
FI20030976A (en) * | 2003-06-30 | 2004-12-31 | M Real Oyj | Coated base paper and process for making coated base paper |
JP4600864B2 (en) * | 2004-01-13 | 2010-12-22 | 王子製紙株式会社 | Coated paper for web offset printing |
FR2879225B1 (en) * | 2004-12-15 | 2007-02-16 | Honnorat Rech S & Services Sar | GLOSSY PAPER |
JP4847191B2 (en) * | 2006-04-14 | 2011-12-28 | 富士ゼロックス株式会社 | Recording sheet |
EP2092118A1 (en) | 2006-12-11 | 2009-08-26 | International Paper Company | Paper sizing composition, sized paper, and method for sizing paper |
GB2449922A (en) * | 2007-06-08 | 2008-12-10 | Arjowiggins Licensing Sas | Base paper |
US8080292B2 (en) * | 2008-10-15 | 2011-12-20 | Hewlett-Packard Development Company, L.P. | Coated paper for pigment-based inkjet printers |
EP2378911B1 (en) * | 2008-11-21 | 2014-05-21 | Boa Technology, Inc. | Reel based lacing system |
WO2010141829A1 (en) * | 2009-06-05 | 2010-12-09 | Newpage Corporation | Paper suitable for cold-set as well as heat set printing |
KR101666005B1 (en) † | 2009-08-12 | 2016-10-13 | 뉴페이지 코포레이션 | Inkjet recording medium |
EP2474668A1 (en) | 2011-01-11 | 2012-07-11 | Steinbeis Papier GmbH | High contrast ink jet printing paper |
EP2474667A1 (en) | 2011-01-11 | 2012-07-11 | Steinbeis Papier GmbH | High contrast ink jet printing paper |
EP4311877A1 (en) * | 2022-07-26 | 2024-01-31 | SAPPI Netherlands Services B.V. | Microplastic-free coated paper |
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1997
- 1997-10-11 DE DE19745082A patent/DE19745082A1/en not_active Withdrawn
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1998
- 1998-10-06 PT PT98118888T patent/PT908560E/en unknown
- 1998-10-06 ES ES98118888T patent/ES2186074T3/en not_active Expired - Lifetime
- 1998-10-06 AT AT98118888T patent/ATE228187T1/en not_active IP Right Cessation
- 1998-10-06 EP EP98118888A patent/EP0908560B1/en not_active Expired - Lifetime
- 1998-10-06 DE DE59806340T patent/DE59806340D1/en not_active Expired - Lifetime
- 1998-10-06 DK DK98118888T patent/DK0908560T3/en active
- 1998-10-07 NO NO19984678A patent/NO325126B1/en not_active IP Right Cessation
- 1998-10-07 NZ NZ332227A patent/NZ332227A/en unknown
- 1998-10-09 KR KR1019980042139A patent/KR19990036956A/en not_active Application Discontinuation
- 1998-10-09 US US09/169,010 patent/US6197155B1/en not_active Expired - Fee Related
- 1998-10-12 JP JP10289884A patent/JP3050381B2/en not_active Expired - Fee Related
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JPH0457988A (en) * | 1990-06-22 | 1992-02-25 | Kanzaki Paper Mfg Co Ltd | Production of coated newsprint paper |
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Also Published As
Publication number | Publication date |
---|---|
NZ332227A (en) | 2000-02-28 |
DK0908560T3 (en) | 2002-12-16 |
EP0908560B1 (en) | 2002-11-20 |
KR19990036956A (en) | 1999-05-25 |
NO984678D0 (en) | 1998-10-07 |
JP3050381B2 (en) | 2000-06-12 |
ES2186074T3 (en) | 2003-05-01 |
NO984678L (en) | 1999-04-12 |
PT908560E (en) | 2003-04-30 |
DE19745082A1 (en) | 1999-04-15 |
JPH11200293A (en) | 1999-07-27 |
US6197155B1 (en) | 2001-03-06 |
DE59806340D1 (en) | 2003-01-02 |
ATE228187T1 (en) | 2002-12-15 |
NO325126B1 (en) | 2008-02-04 |
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