EP1960602A1 - Auftragswerk zum aufbringen einer hochabrasiven beschichtungsmasse auf eine laufende trägerbahn - Google Patents
Auftragswerk zum aufbringen einer hochabrasiven beschichtungsmasse auf eine laufende trägerbahnInfo
- Publication number
- EP1960602A1 EP1960602A1 EP06829615A EP06829615A EP1960602A1 EP 1960602 A1 EP1960602 A1 EP 1960602A1 EP 06829615 A EP06829615 A EP 06829615A EP 06829615 A EP06829615 A EP 06829615A EP 1960602 A1 EP1960602 A1 EP 1960602A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier web
- support roller
- coating material
- roller
- roll
- 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
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
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
-
- 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
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
- D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
- D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender
Definitions
- the invention relates to a coater for applying a highly abrasive particles-containing coating composition to a running carrier web, in particular a paper web, which is intended for use in the production of abrasion-resistant laminates.
- Abrasion-resistant laminates in particular for use as floor coverings, obtain their abrasion resistance by an abrasion-resistant cover layer which consists of an impregnated and abrasion-resistant coated carrier web of paper or similar material whose impregnation and coating takes place by means of an applicator, as is the subject of the invention.
- the coating of the carrier web is known to be carried out with a coating composition which consists essentially of melamine resin and an admixture of corundum particles and is therefore very abrasive, which is why a particular problem in the construction of a
- Commissioned job is on the one hand to apply a high quality, uniform and clean coating on the carrier web, but to avoid wear of the components by the abrasive to be applied coating mass as far as possible.
- a device for coating a paper web with a mixture of liquid resin and fine-grained corundum in which the Paper web is passed with a wrap of slightly more than 180 ° over the lower run of a driven roller with a horizontal roll axis.
- the mixture of liquid resin and fine-grained corundum to be applied is applied through the paper web in the initial area of wrap around the web by means of a slot die extending across the width of the roll, with the slot die opening obliquely downward toward the roll, and the coating mass becomes one by several meters higher reservoir with the static pressure thus generated expelled by gravity from the slot.
- an air brush with a blow slot aimed at the paper web is provided, which serves to pre-smooth the applied layer.
- the paper web then passes over a higher pulley and is deflected there in the horizontal direction.
- the coating composition is applied to the current running over the lower run of the calf circumference paper web so that gravity and centrifugal force generated by the roller rotation of the applied mass give the tendency to drip radially away from the roller and down or thrown away become.
- the bottom run of the roll periphery plunges into a catch funnel, which collects dripping or thrown coating mass and passes it into a sump, from where it is pumped back into the reservoir.
- the disadvantage of the coating order on the hanging drum is therefore accepted in order to generate at the applicator itself even little wear, which occurs only at the slot and of course on the pumping organs for pumping back of coating material in the reservoir.
- an impregnation and coating plant in which the paper web after preimpregnation by means of an applicator roll passes through an impregnating bath and from there passes directly through a coating unit, by being passed over the roll with a loop of 180 °, to the bottom of which it tapers horizontally and from the top of which it runs horizontally.
- a metering roller is arranged, which rotates in the opposite direction to the guide roller and the coating material is carried on the overhead region by means of a slot die, which is then applied from the metering roller to the paper web traveling over the guide roller and metered in the roller slot.
- an applicator device in which a paper web again runs in horizontally to the underside of a deflecting roller, is deflected by the latter at a wrap angle of 180 ° and runs horizontally from the upper side thereof, wherein in turn next to this deflecting roller Dosing roller is arranged.
- the application of the existing resin and fine-grained corundum coating composition is carried out by a slot die, which takes place either up on the lower run of the paper web at the inlet to the guide roller or up to the bottom of the metering. On the upper, expiring from the guide roller run of the paper web is in turn a cloth for smoothing the application layer on.
- the upwardly opening slot nozzle is disadvantageous since it must be used to print out the coating material containing the abrasive particles with pressure, which causes wear at the slot nozzle.
- an embodiment of a downwardly opening onto an overhead region of the metering roller slot nozzle is also described, but in turn has the disadvantage that then the applied to the metering roller coating material gravity and centrifugal force is exposed and over the entire circumference of the metering roller in whose underside area must be transported to the nip.
- the object of the invention is therefore to provide a commissioned work for coating a paper web or other carrier web with a coating containing abrasive particles, which is the objective of the effective and qualitatively flawless order - A -
- the coating composition on the paper web or other carrier web in wear minimization even better meet.
- the carrier web in particular the paper web, is first impregnated with resin in an impregnating station through which it passes and then passed through a coating station over a short path, so that the coating application takes place wet-on-wet on the impregnated carrier web.
- the carrier web is thereby guided over a carrier roll with preferably a relatively small wrap angle, the carrier web rising from below upwards to the carrier roll, wraps around an upper region of the carrier roll and preferably runs down slightly inclined from the carrier roll.
- the task of the coating material is carried out via a feed unit without pressure from the top of the carrier web, and in a short distance or immediately before the nip between the carrier roller with the overlying carrier web and in the apex line area, but preferably just behind the apex line of the support roller arranged doctor roller, the revolves counter to the support roller at low speed.
- the inventive arrangement allows a simple web guide with a minimization of the necessary web deflections of the carrier web, the carrier roll opposite direction of rotation of the doctor roller can before the acting as metering nip a coating mass wave arise, which on the one hand uniform distribution of Korundteilchen in the coating composition and on the other hand minimizing the Ver - causes wear of the components.
- the non-pressurized feed of the application medium avoids foaming.
- FIG. 1 is a schematic side view of a first embodiment of a commissioned work according to the invention.
- FIG. 2 also in a schematic side view of a second, compared to the arrangement of FIG. 1 modified embodiment of a
- drawing figures 1 and 2 show, respectively in a highly schematic side view, a commissioned work according to the invention with a coating station, and a downstream smoothing roller arrangement.
- the paper web 1 first passes through an impregnating station, not shown, where the paper web passes through an impregnating bath, also not shown, and is thereby impregnated with liquid melamine resin.
- the drawings show in each case on the left the paper web 1 coming from the impregnating station and running over different deflection rollers 2.
- the paper web 1 runs with a relatively small angle of wrap of less than 90 ° over the top of the support roller 4 and leaves it in a slightly downward direction.
- the doctor roller 5 is arranged above the support roller 4, in the embodiments in an angular position offset by 10 ° from the apex line of the support roller in the direction of travel of the paper web. It would be conceivable arrangement of the doctor roller in a range of +15 ° to -15 °, based on the apex line of the support roller. However, as shown, an offset of the doctor roller 5 in the running direction of the paper web is slightly more advantageous behind the crest line.
- the doctor roller 5 forms a dosing gap with the support roller 4 or the paper web 1 running over it. By means of a motor gap adjustment device 7, on which the doctor roller 5 is arranged, this metering gap is adjustable.
- the feeding device 6 performs the existing essentially of a mixture of melamine resin with corundum particles coating composition just before the metering gap between the support roller 4 and the metering roller 5 on the top of the paper web 1 to.
- the task unit 6 there is a pressureless coating material supply 8, and the task unit 6 has associated with it a support unit 9 assigned to support the task function.
- the doctor roller 5 is rotated at a slow speed in opposite directions to the direction of rotation of the support roller 4 and thus to the web running direction of the paper web 1.
- a scraper 10 associated with the squeegee roller 5 scrapes coating material adhering to the squeegee roller and causes it to fall back into the task unit.
- an air nozzle Kantenabstreifer 1 1 is arranged.
- this could also be replaced by another wiper organ or omitted.
- a drip tray 12 for dripping resin or coating material is arranged below the actual application work formed from the support roller, the doctor roller and the feeder.
- the smoothing roller arrangement following the coating station the coating applied to the paper web in the coating station is further smoothed.
- the smoothing roller assembly has a driven back-up roll 13 and two smoothing rollers 14 arranged in front of and behind the back-up roll, which are arranged on a frame which can be raised and lowered pneumatically.
- the drip pan 13 is filled with coating material under the roller arrangement, in such a way that the carrier roller 4 dips somewhat into the coating material in the drip pan 12. This is used for roller cleaning.
- the carrier roll is also formed with lateral drains 15 for the coating material, which overflows during coating by application of the coating material by means of the feeding unit 6 at the lateral edges of the paper web.
- the collecting trough 12 is preferably arranged to be raised and lowered pneumatically on a frame 16, so that the immersion depth of the carrier roll in the coating material can be regulated.
- the drip pan can be lowered as required by the support roller, so that it no longer dips.
- the drip pan 12 preferably has a level control of the liquid level of the coating material in the tub.
- a drain pipe 17 in the lower region of the collecting trough 13 allows circulation of the coating material.
- a wiper 18 associated with the carrier roll strips coating material entrained by the carrier roller during immersion in the coating material in the drip pan 12 from the peripheral region of the carrier roller extending out of the drip pan.
- the support roller does not dip in coating material.
- the drip pan 12 is formed as a simple drip tray that collects only dripping coating material that can be derived or collected via a spout, not shown. In this embodiment, therefore, the collecting trough also requires no height adjustment. Likewise, in this embodiment, one of the support roller associated scrapers deleted.
- the task unit 6 is formed in the embodiment shown in Fig. 2 with a coating material tub, the trough width is equal to the web width of the paper web 1, and the easily replaceable lateral boundary wedges and extending over the trough width plastic sealing lip.
- the support unit 9 also includes a pressing device, which presses the coating material tray of the task unit slightly on the doctor roller 5. In the coating material tray of the feeding unit, a leveling of the coating material level takes place.
- the embodiment according to FIG. 2 is particularly advantageous if, because of the nature of the coating material, it is more advantageous to work without coating material circulation. Then, the coating material is filled directly into the coating material tray of the task unit on the doctor roller and the respective refilling of this tray is controlled by the level control.
- the applicator unit according to the invention has considerable advantages.
- the web guide of the paper web is simple and has minimal Bahnumlenkungen. All parts of the commissioned work are easily accessible.
- the mechanical arrangement is simple and the wear on components is kept to a minimum with very good coating quality.
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06829615T PL1960602T3 (pl) | 2006-12-14 | 2006-12-14 | Mechanizm powlekający do nakładania silnie abrazyjnej masy powłokowej na przemieszczającą się taśmę nośną |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2006/012064 WO2008071216A1 (de) | 2006-12-14 | 2006-12-14 | Auftragswerk zum aufbringen einer hochabrasiven beschichtungsmasse auf eine laufende trägerbahn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1960602A1 true EP1960602A1 (de) | 2008-08-27 |
EP1960602B1 EP1960602B1 (de) | 2011-11-02 |
Family
ID=38515363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06829615A Not-in-force EP1960602B1 (de) | 2006-12-14 | 2006-12-14 | Auftragswerk zum aufbringen einer hochabrasiven beschichtungsmasse auf eine laufende trägerbahn |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1960602B1 (de) |
AT (1) | ATE531851T1 (de) |
PL (1) | PL1960602T3 (de) |
WO (1) | WO2008071216A1 (de) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004063043B3 (de) * | 2004-12-22 | 2006-07-20 | Vits Systems Gmbh | Vorrichtung zum Auftragen einer Beschichtungsmasse auf eine Papierbahn |
-
2006
- 2006-12-14 AT AT06829615T patent/ATE531851T1/de active
- 2006-12-14 WO PCT/EP2006/012064 patent/WO2008071216A1/de active Application Filing
- 2006-12-14 PL PL06829615T patent/PL1960602T3/pl unknown
- 2006-12-14 EP EP06829615A patent/EP1960602B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2008071216A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE531851T1 (de) | 2011-11-15 |
PL1960602T3 (pl) | 2012-03-30 |
WO2008071216A1 (de) | 2008-06-19 |
EP1960602B1 (de) | 2011-11-02 |
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