EP0071149B1 - Dispositif de dosage du poids de couches de revêtement sur une bande en mouvement - Google Patents

Dispositif de dosage du poids de couches de revêtement sur une bande en mouvement Download PDF

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Publication number
EP0071149B1
EP0071149B1 EP82106497A EP82106497A EP0071149B1 EP 0071149 B1 EP0071149 B1 EP 0071149B1 EP 82106497 A EP82106497 A EP 82106497A EP 82106497 A EP82106497 A EP 82106497A EP 0071149 B1 EP0071149 B1 EP 0071149B1
Authority
EP
European Patent Office
Prior art keywords
web
flank
scraper
admission
radius
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.)
Expired
Application number
EP82106497A
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German (de)
English (en)
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EP0071149A1 (fr
Inventor
Reinhard Esser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Esser Reinhard
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Individual
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Filing date
Publication date
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Priority to AT82106497T priority Critical patent/ATE16031T1/de
Publication of EP0071149A1 publication Critical patent/EP0071149A1/fr
Application granted granted Critical
Publication of EP0071149B1 publication Critical patent/EP0071149B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/045—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by the blades themselves
    • 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
    • D21H5/00—Special paper or cardboard not otherwise provided for

Definitions

  • the invention relates to a device for adjusting the wet application weight of coatings on material webs, in particular of conventional pigment dispersions on paper or cardboard webs.
  • the dry application weights are between 5 and 35 g / m 2 .
  • the coatings are usually made from an aqueous dispersion with different dry matter contents, so that the wet application weights are considerably higher. It has proven to be expedient first to apply an excess of coating material to the running material web and then to remove it again from the surface by means of metering devices, the aim being at the same time to smooth the coating surface.
  • metering devices include roller applicators in connection with metering rollers, so-called reverse roll coaters, roller scraper metering devices, also known as squeegees, and smoothing scraper devices, better known under the abbreviation Blade.
  • the coated web of material is carried by a support device, for example a roller, and by the dosing unit, e.g. B. blade or doctor blade, exerted a pressure on the web, which counteracts the coating composition.
  • a support device for example a roller
  • the dosing unit e.g. B. blade or doctor blade
  • EP-A-029865 describes a solid, bar-shaped doctor element with a convex surface which forms the crescent-shaped inlet gap, in which the doctor element is pivoted about an axis of rotation, the sharp edge being pivoted out of a plane characterizing the new position, the contact pressure of the doctor element is changed.
  • This device contains the features a) to bb) of claim 1 of this patent.
  • DE-A-16 52 273 describes a doctor element known as an air knife with a sharp metering edge for the air jet.
  • a pre-metering gap which also narrows in a crescent shape, the coating slip is first applied in excess to the web guided on the counter roller.
  • the application unit (elements forming the pre-metering gap) and the doctor device are combined on or to form one component.
  • the adjustability is poor. Therefore, a further development of this device according to US-A-39 96 889 shows again the at least quasi-separation of the two devices.
  • US-A-2534320 describes a stripper with a sheet thickness between 3 and 12 mm, the inlet flank of which ends in a sharp edge, the radius of curvature of the inlet flank roughly matching the radius of curvature of 150 mm of the roller supporting the web with an elastic surface.
  • the curvature is convex in shape.
  • the scraper is arranged in a rotatable holder and can be pressed against the web surface with different pressure, so that the surface of the support roller is deformed.
  • US-A-1 925 092 describes a wiper device which is directed against a freely guided web, the web being guided a little around the curved inlet flank of the wiper up to its sharp-edged end.
  • the scraper inevitably serves as a web guide and deflection element at the same time.
  • the gap that forms is limited by the convex curved surface of the wiper and the concavely curved coated surface of the web. Since the running web is discharged tangentially from the sharp end edge of the scraper, it is not possible to set a defined inlet gap.
  • the geometry of the inlet gap which forms does not only depend on the web speed, but also on the amount and the rheological properties of the coating composition and on the elongation behavior of the paper web. The gap geometry is therefore not defined by the device, but is more or less undefined depending on the respective process conditions and cannot be set.
  • Blade blades and doctor blades in themselves are not sufficiently stable tools for setting a gap geometry and also require brackets and guides that give them the required straightness, bending resistance and resistance to the hydrodynamic back pressure of the coating material. Particularly high demands are made on the designs of such mounts. With today's common web widths of several meters and web speeds up to 1 200 m / min. the requirements can only be met up to a certain straight line by appropriate design.
  • the known metering devices are unsatisfactory in particular if, in order to achieve high application weights, the known blade blades are applied to the web with a small angle of attack and low contact pressure. Under these conditions, a wiping surface or zone forms, in which wipers abut the web surface. A condition very soon arises in which blade forces sometimes cannot withstand the higher color printing and a different application weight arises across the web. Even slight deviations in straightness, due to manufacturing tolerances or other causes lead to considerable fluctuations in the order quantities across the web after dosing. Attempts have been made to improve the straightness by supporting z. B. to improve the blade with the help of pressure hoses. These results are unsatisfactory, especially with larger web widths.
  • the z. At present possible and usual coating systems can have working widths of up to 6,000 mm.
  • the working speeds and the application weights are heavily dependent on the types and the desired properties.
  • LWC paper LWC is derived from light weight coated
  • they are up to 1,300 m / min. with application weights up to 10 g / m 2 and side;
  • cardboard for example, up to 250 m / min. with application weights of around 30 g / m 2 per side and for so-called art paper up to 600 m / min. with application weights of about 25 g / m 2 and side.
  • the object of the invention is therefore to provide a stripping device which makes it possible to set the wet application weight on coated webs with great accuracy, by controlling the hydrodynamic pressure of the coating material between the running web and the fixed stripper.
  • the advantage of the inventive design of the metering device is that the geometry of the inlet gap between the support roller and the scraper is fixed for every angle of the scraper and at the end of the inlet gap there is a narrow contact line and no contact zone of the scraper is formed when this is applied with pressure the web is pressed on, which is sufficient to compensate for the hydrodynamic pressure of the coating color. Apart from the angle of attack, the gap geometry is therefore independent of the particular process conditions during dosing.
  • FIG. 1 A material web, for example a paper or cardboard web 1, is fed to the support roller 2 via a deflection roller 3, wraps around it and is removed again via a further deflection roller 3 and reaches subsequent parts of the coating system, for example a dryer, not shown.
  • a customary and known application unit 4 with a trough 9 for the coating material, an excess of coating material is applied to the web and removed from the web 1 with the stripper 5.
  • the stripped coating mass passes into a drip pan, not shown.
  • the set coating thickness 8 remains behind the stripper 5.
  • the stripper 5 lies at point 6 on the web surface.
  • the scraper 5 is positioned on the web surface at point 6 via bearings of the scraper 5 on both sides in the frame.
  • the bearings are designed so that the scraper can be pivoted about the contact line (6) as the axis of rotation in order to be able to precisely adjust the inlet gap between the web surface and the concave curved inlet flank (7) of the scraper.
  • the facilities required for the exact and reproducible setting of the scraper (5) are housed in or on the chair.
  • the desired contact pressure on the web on the support roller is generated mechanically, hydraulically or pneumatically via the ends of the stripper (5) on both sides.
  • Such devices are known.
  • pneumatic systems have proven themselves better than mechanical or hydraulic systems and are therefore preferred when using the device according to the invention.
  • the gap geometry is determined by the device, can be set in a reproducible manner and is independent of the process conditions such as working speed, reological properties and quantity of the coating slip on the paper web, etc.
  • the exact cross-section of the scraper (5) is not critical, it is crucial that it has a concavely curved inlet flank (7) of corresponding length with a sharp-edged end (6).
  • a wedge-shaped or rectangular cross section is preferred.
  • the scraper can be solid or 'designed as a hollow profile.
  • the wall thickness of the hollow profile and size are dimensioned in the same way as for full material so that for a given working width the stripper (5) is rigid in itself and deflections in the middle of the web are avoided.
  • the length of the inlet flank can be 10-250 mm, preferably 25-230 mm, very preferably 50-200 mm or 80-150 mm. With larger diameters of the support roller, larger lengths of the inlet flanks are favorable.
  • the scraper (5) consists of a stable material of sufficient mechanical strength, for example steel or coated metal alloys or ent. speaking stable plastic.
  • the radius of the support roller (2) is 150-500 mm depending on the working width, whereby larger working widths generally require larger radii. to avoid deflections.
  • the support roller (2) has an elastic covering on a hard core. Synthetic rubber types or synthetic polymers with the necessary elasticity are suitable for this.
  • the surface hardness of the backup roller can be determined using various measuring methods. Pusey & Johnes plastometers (P + J. units, measured with the 1/8 "ball) or Shore hardness measuring devices (Shore A, measured with truncated cone) are commonly used.
  • FIG. 2 shows an embodiment of the scraper (5), in which a steel sheet (11) is inserted into the inlet flank (7), which can be replaced if necessary.
  • a steel sheet (11) is inserted into the inlet flank (7), which can be replaced if necessary.
  • Microscopic examinations of this edge have shown that a sharpening analogous to the known blade blades is not necessary, but the normal sharp edge provides the best results.
  • the steel sheet is inserted into the convexly curved inlet flank so that its edge is flush with the scraper edge (6).
  • the steel sheet is inserted in such a way that it projects slightly beyond the edge of the scraper, for example 1-10 mm, in order to extend the inlet flank.
  • the scraper is placed on the web surface with the end of the inserted steel sheet and this support line serves as the axis of rotation for the scraper.
  • the blade (11), preferably made of spring steel, inserted into the inlet flank (7) should rest on the scraper (5) over the entire surface and be held in this position.
  • this can be done in that the inlet flank (7) has an undercut groove (10), engage in the punching tongues (12) of the steel sheet and hold the blade under tension.
  • other fastening and holding devices can also be used, provided that the sheet is held in flat contact with the curved inlet flank (7) of the scraper (5).
  • Figure 3 shows the arrangement of the punch tongues (12) in the steel sheet (11) in the middle at a distance from each other.
  • Figure 4 shows a further embodiment of the scraper (5) in which a sealing strip (13) is arranged and fastened to the scraper (5) as a wear element and forms the final edge (6) of the scraper (5). Since the actually scraping edge is very narrow, the end strip (13) can be chosen so thin that no grinding corresponding to the radius of curvature of the inlet flank (7) is required. It is sufficient and possible to use square strips made of a correspondingly abrasion-resistant material. Such materials are, for example, steel alloys, particularly hard steel alloys or other abrasion-resistant materials.
  • the coating color also contains the necessary proportions of dispersing aid, defoamer and other customary additives.
  • the coating system has the arrangement shown in Figure 1.
  • the web width is 315 cm.
  • a design according to FIG. 2 with an inserted sheet of spring steel is used as the scraper.
  • the scraper has a concave curved inlet flank with a radius of curvature of 250 mm and is 200 mm long.
  • the support roller has a diameter of 500 mm, the surface hardness is 46 units Shore A (140 P + J. units).
  • the low application weight A of 10 g / m 2 is an amount for which the known blade has proven to be particularly suitable for dosing.
  • This type of scraper develops its advantages with a steep blade angle and high contact pressure.
  • a comparable effect is achieved with the device according to the invention if the angle of attack is larger, so that a short inlet zone with pressure build-up is formed in the coating color.
  • a contact pressure of about 3 kN / m generated pneumatically at the side end of the scraper in the frame against the back-up roller (line pressure in the present case, a wet application is achieved which in the dried state (6% moisture) is 10 g / m 2 ).
  • the control weight was determined for checking at the same web height on the outer edges and in the middle of the web. The mean values from several measurements gave: web outer edges 10.0 g / m 2 and 10.1 g / m 2 , web center 10.0 g / m 2 .
  • the higher application weight B of 25 g / m 2 is an amount for which a blade is less suitable due to the required small angle of attack and the low contact pressure.
  • Other application devices are usually required for this, for example a roller application unit.
  • a higher application weight is now possible with the same metering device with which a low application weight was achieved, by flattening the scraper and forming a long crescent-shaped inlet gap in which a hydrodynamic pressure builds up in the coating composition, without the contact pressure being significantly reduced must become.
  • the good adjustability of the scraper means that only acceptable weight fluctuations occur across the web.
  • the high quality requirements have narrowed the tolerable range of weight deviations very much.
  • the maximum deviations between the individual measurements were 2 g / m 2 .
  • the evaluation shows the good weight consistency across the web.
  • An important advantage of the device according to the invention is that, regardless of the desired application weight, such a contact pressure can always be selected that enables the gap to be formed exactly across the web, even with larger working widths.
  • the prerequisite for this is the correct elasticity of the support roller surface, which must enable the formation of a crescent-shaped, reproducibly adjustable inlet gap and a short actual wiping area on the contact edge of the wiper, and furthermore the rigid wiper with a concave curved inlet flank.
  • the contact pressure should be as low as possible with regard to the design effort of the scraper support roller and its bearings in the frame, but it must be so large that at least the current web speeds of up to 1200 m / min.
  • Another advantage of the device according to the invention is that with only one device, very different application weights with less fluctuations than previously customary, in particular with large working widths, are possible. In this way, the surface and transparency of the coating are achieved in a way that was previously only possible with different metering devices specially adapted to high or low application weights.
  • the advantage of the rigid scraper according to the invention with a concavely curved, long inlet flank is that it is not only easy to produce with the required accuracy without great difficulty, but can also be adjusted with great accuracy and reproducibility across the web.
  • the crescent-shaped inlet gap which is filled to a greater or lesser extent with coating compound during operation between the support roller and stripper, is of equal thickness at all points, in particular at the end edge of the stripper, and enables smaller deviations from the target weight than was possible with the previously known metering devices.

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  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Cleaning In General (AREA)

Claims (5)

1. Dispositif de régulation du poids d'application d'enductions sur des matières en feuilles continues,
a) qui comporte un rouleau soutenant la bande de matière du côté non enduit
aa) dont le rayon est de 150 à 500 mm et
ab) dont la surface est souple avec une dureté de 82 à 34 unités Shore A, et
b) qui comporte une racle restant immobile pendant son action sur l'enduction
ba) possédant du côté d'admission un flanc d'admission courbé
bb) dont l'extrémité portant sur la bande de matière forme une arête vive,

caractérisé en ce que
c) la racle est pivotante sur la ligne de contact avec la bande de matière,
d) la racle (5), rigide en elle-même, possède un flanc d'admission (7) à courbure concave
da) dont le rayon de courbure est égal ou légèrement inférieur ou supérieur au rayon de courbure du rouleau de soutien (2),
e) le flanc d'admission (7) a une longueur de 10 à 250 mm.
2. Dispositif selon la revendication 1, caractérisé en ce que le flanc d'admission (7) a une longueur de 50 à 200 mm. -
3. Dispositif selon les revendications 1 à 2, caractérisé en ce que dans le flanc d'admission (7) à courbure concave de la racle (5) est insérée une lame d'acier (11) portant sur la racle.
4. Dispositif selon la revendication 3, caractérisé en ce que la lame d'acier (11) est pourvue de languettes estampées (12) disposées à intervalles réguliers ; lesdites languettes s'engagent dans une gorge détalonnée (10) dans le flanc d'admission (7) de la racle (5) et maintiennent la lame d'acier (11) dans sa position.
5. Dispositif selon les revendications 1 ou 2, caractérisé en ce que le bord extrême (6) du flanc d'admission (7), lequel est en contact avec la bande de matière, est constitué par un listeau de bordure (13) fixé sur la racle (5).
EP82106497A 1981-07-24 1982-07-19 Dispositif de dosage du poids de couches de revêtement sur une bande en mouvement Expired EP0071149B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82106497T ATE16031T1 (de) 1981-07-24 1982-07-19 Vorrichtung zur regulierung des auftragsgewichtes von beschichtungen auf in laufender bahn gefuehrtem material.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3129251A DE3129251C2 (de) 1981-07-24 1981-07-24 Vorrichtung zur Regulierung des Auftragsgewichtes von Beschichtungen auf in laufender Bahn geführtem Material
DE3129251 1981-07-24

Publications (2)

Publication Number Publication Date
EP0071149A1 EP0071149A1 (fr) 1983-02-09
EP0071149B1 true EP0071149B1 (fr) 1985-10-09

Family

ID=6137653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106497A Expired EP0071149B1 (fr) 1981-07-24 1982-07-19 Dispositif de dosage du poids de couches de revêtement sur une bande en mouvement

Country Status (4)

Country Link
US (1) US4471714A (fr)
EP (1) EP0071149B1 (fr)
AT (1) ATE16031T1 (fr)
DE (1) DE3129251C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4036726C2 (de) * 1990-11-17 2001-06-28 Hauni Werke Koerber & Co Kg Beschichtungsvorrichtung
DE4304478A1 (de) * 1993-02-15 1994-08-18 Pagendarm Gmbh Auftragsvorrichtung
US5620515A (en) * 1995-05-30 1997-04-15 Inoue Kinzoku Kogyo Co., Ltd. Coating apparatus
DE29709301U1 (de) * 1997-05-27 1997-11-27 Voith Sulzer Papiermasch Gmbh Vorrichtung zum Befestigen von mindestens einem im wesentlichen ortsfest angeordneten dünnen, langgestreckten Funktionselement
CA2251305A1 (fr) * 1997-10-24 1999-04-24 Voith Sulzer Papiertechnik Patent Gmbh Dispositif et processus de couchage de la section humide d'une machine de production de bande de materiau, en particulier de papier ou de carton
US6306215B1 (en) * 1998-03-10 2001-10-23 Valence Technology, Inc. Apparatus for coating current collectors
FI20001076A (fi) * 2000-05-08 2001-10-24 Berg Carl Gustav Järjestelmä ja menetelmä päällystysprosessin suureiden määrittämiseksi, menetelmä kuivatusprosessin ohjaamiseksi sekä tietokoneohjelma

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Publication number Priority date Publication date Assignee Title
US2051403A (en) * 1930-07-16 1936-08-18 Warren S D Co Paper coating
US1925092A (en) * 1932-09-26 1933-09-05 John Waldron Corp Smoothing device
US2534320A (en) * 1946-05-16 1950-12-19 Champion Paper & Fibre Co Apparatus for coating paper
US3285225A (en) * 1963-05-02 1966-11-15 Beloit Corp Coating applicator
DE1652273C3 (de) * 1967-02-24 1975-06-12 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und Absaugesystem für Beschichtungsvorrichtungen zum Vermeiden der Übertragung von Druckstörungen auf den Beschichtungsvorgang
AU4944469A (en) * 1969-01-23 1970-07-30 International Paper Company Bent blade coating
DE2417720C2 (de) * 1974-04-11 1983-01-05 Agfa-Gevaert Ag, 5090 Leverkusen Vorrichtung zum Beschichten bandförmiger Unterlagen mit flüssigen Lösungen oder Dispersionen
DE2822682A1 (de) * 1978-05-24 1979-11-29 Feldmuehle Ag Vorrichtung und verfahren zum kontinuierlichen egalisieren des striches beim beschichten von laufenden materialbahnen
DE2843371C2 (de) * 1978-10-05 1985-07-11 Zanders Feinpapiere AG, 5060 Bergisch Gladbach Verfahren zum Beschichten von laufenden Bahnen aus Papier oder Karton mit üblichen Pigmentdispersionen und Vorrichtung zum Einstellen des Naßauftragsgewichtes von Beschichtungen, insbesondere zur Durchführung des Verfahrens
ATE1769T1 (de) * 1979-12-03 1982-11-15 Zanders Feinpapiere Ag Vorrichtung und verfahren zum beschichten von laufenden bahnen beispielsweise aus papier oder karton.
DE3017274C2 (de) * 1980-05-06 1985-07-18 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Streichen von Papierbahnen

Also Published As

Publication number Publication date
EP0071149A1 (fr) 1983-02-09
US4471714A (en) 1984-09-18
ATE16031T1 (de) 1985-10-15
DE3129251C2 (de) 1984-05-17
DE3129251A1 (de) 1983-02-10

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