CA2170929A1 - Method and installation for treating paint when applied to a paper web - Google Patents
Method and installation for treating paint when applied to a paper webInfo
- Publication number
- CA2170929A1 CA2170929A1 CA 2170929 CA2170929A CA2170929A1 CA 2170929 A1 CA2170929 A1 CA 2170929A1 CA 2170929 CA2170929 CA 2170929 CA 2170929 A CA2170929 A CA 2170929A CA 2170929 A1 CA2170929 A1 CA 2170929A1
- Authority
- CA
- Canada
- Prior art keywords
- paint
- vacuum
- paper web
- mixing tank
- installation according
- 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.)
- Abandoned
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
- 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
-
- 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
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paper (AREA)
Abstract
The paint to be applied to a paper web in a paint coating device is re-circulated at a high surplus via a vacuum mixing tank that can be acted upon by partial vacuum, as a result of which good deairing of the paint is achieved.
Description
METHOD AND INSTALLATION FOR TREATING PAINT
WHEN APPLIED TO A PAPER WEB
BACl~OUND OF THE INVENTION
FIELD OF THE INVENTION
The invention relates to a method of treating paint when applied to a paper web and an inct~ tion for putting the method into practice.
BACKGROUND ART
In installations of the generic type, the paint is stored in one or several big agitated tanks of vertical agitator a~is, where it is stirred and, 5 having passed through filters, is supplied in excess to the paint coating device. The surplus of paint is returned to the storage tank. In the coating device, paint in an amount of 25 to 40 times the quantity re-quired for coating (brushing) is applied to the paper web. This enormous surplus of paint must be removed from the paper web by means of the 20 doctor blade. Consequently, a considerable amount of air is included in the paint at the doctor blade, which may lead to foaming on the one hand and as a result of which the recirculated pain~ may contain very fine air bubbles which burst open after the final coating of the paper web, which may lead to deterioration of the surface of the coated paper 25 web.
SUMMARY OF THE INVENTION
It is the object of the invention to embody a method and an installation 30 in which problems resulting from the inclusion of air in the paint do not occur.
In a method of the generic type, this object is attained by the features of providing paint, intermediately storing the paint, acting on the paint by partial vacuum during the intermediate storage, filtering the paint, feeding the paint at a high surplus as compared to the quantity of paint applied to the paper web, applying the paint to the paper web, and re-turning the surplus of paint to the paint stored intermediately. In an 5 installation for putting the method into practice, this object is attained by a vacuum mixing tank having a mixing unit that is rotatingly driv-able, by a conduit for the supply of paint discharging into the vacuum mixing tank, by a vacuum duct discharging into the vacuum mixing tank for the production and maintenance of partial vacuum in the vacuum mix-10 ing tank by a flow pipe discharging from the vacuum mixing tank, by afilter disposed in the flow pipe, by a paint coating device connected to the flow pipe for the application of paint to a paper web that is passed through, and by a return pipe connecting the paint coating device with the vacuum mixing tank.
The gist of the invention resides in that after return from the coating device, the paint is stirred comparatively siowly in a gastight tank, while it is subjected to partial vacuum.
20 Further features, advantages and details of the invention will become ap-parent from the ensuing description of an installation for the treating of paint in connection with the coating of a paper web by the paint, taken in conjunction with the drawing.
The drawing figure shows an installation for treating paint.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The installation illustrated in the drawing comprises a mixer 1, in which paint for coated paper is continuously produced from numerous constitu-ents by mixing This ~mished paint is supplied via a conduit 2 to a vacuum mixing tank 3. The latter comprises a gastight drum 4 resistant to pressure and of holi~onlal arrangement, in which a mixing unit 6 drivable by a motor S is disposed centrally.
On the drum 4, provision is made for a vacuum top 7, a so-called dome, 5 which is open towards the interior chamber 8 of the drum 4. A vacuum duct 9 opens into the upper portion of this vacuum top 7, by way of which duct 9 the interior chamber 8 of the drum 4 can be acted upon by partial vacuum. The vacuum pump 10 is driven by a motor 11.
0 A flow pipe 12 discharges from the underside of the drum 4, a feed pump 13 disposed in the flow pipe 12 conveying paint via the latter through a filter 14 to a paint coating device 15, from where paint is returned through a return pipe 16 back into the drum 4.
5 In the filter 14, paper particles, for instance paper fibers, and paint re-agglomerates are separated from the paint for the latter to reach the coating device 15 in a condition not i~lplllirled. This coating device 15 conventionally comprises a rotatable roll 17, along which a paper web 18 to be coated by paint is guided and conveyed in the direction of trans-20 port 19. The direction of rotation of the roll 17 corresponds. A rotatablepaint coating roll 20 is located below the roll 17, bearing against the latter and the paper web 18. The lower side of the coating roll 20 dips into a paint tank 21, from which it collects paint, and applies the paint to the paper web 18. Further, a doctor blade 22 is provided, removing 25 paint applied to the paper web 18 at a surplus of 25 to 40, so that the paper web 18 is only coated by a very thin layer of paint, which is si-multaneously pressed into the surface of the paper web 18 by the doctor blade æ. The flow pipe 12 discharges into the paint tank 21; in like manner, the return pipe 16 discharges from the latter.
In the return pipe 16, a recir~ ting pump 23 can be disposed as a vacuum stop-work, preventing any penetration of the partial vacuum from the drum 4 into the paint tank 21. Likewise, the conduit 2 may have a feed pump 24 equally serving as a vacuum stop-work and precluding any penetration of the partial vacuum from the drum 4 into the mixer 1.
By alternative to the pumps 23, 24 - even taken individually - siphon connecting pipes 25 or 26 can connect the return pipe 16 or the conduit 2 5 with the lower portion, filled with paint, of the drum 4, the deepest point of these siphon connecting pipes 25, 26 being distant from the level 27 of the paint in the drum 4 by a measure L which corresponds to the partical vacuum in the upper portion of the drum 4. This will also help preclude any penetration of the partial vacuum from the drum 4 into the 0 return pipe 16 and thus into the coating device 15 or, respectively, into the conduit 2 and thus into the mixer 1. The necessary length is directly proportional to the partial vacuum prevailing in the upper portion of the drum 4 and inversely proportional to the density of the paint. The siphon connecting pipes 25 and 26 are shown by dotted lines in the drawing. In 15 this embodiment, the mixer 1 and the coating device 15 must be disposed above the level 27 for gravity feed of the paint to be possible.
The vacuum mixing tank 3 is disposed on a balance 28 which ensures that the degree to which the drum 4 is filled, i.e. the level 27 of paint 20 in the drum 4, fluctuates only within a given range. The balance 28 can trigger a solenoid valve 29 in the conduit 2, by means of which the sup-ply of paint from the mixer 1 can be controlled. The balance 28 can also trigger the motor 30 of the feed pump 13, thereby influencing the circu-lation of the paint.
A foam probe 31 is disposed in the vacuum top 7, triggering a ventila-tion valve 32 in the vacuum duct 9 when paint foam penetrates into the vacuum top 7, whereby the partial vacuum in the interior chamber 8 of the drum 4 is destroyed in such a case so that the risk of paint foam 30 penetrating into the vacuum duct 9, and thus into the vacuum pump 10, is elimin:~ted.
The installation works as follows. From the mixer 1, paint is supplied as required via the conduit 2 to the vacuum rnixing tank 3. The quantity supplied per unit of time corresponds to the quantity of paint applied to the paper web 18 in the paint coating device 15. The entire stocks of paint are circlll~te~l in the vacuum mixing tank 3 by the mixing unit 6 which rotates comparatively slowly. This helps ensure good deairing of 5 the paint, owing to the partial vacuum prevailing in the interior chamber 8 of the drum 4, which implies macro deairing as well as micro deairing corresponding to the amount of the partial vacuum. Macro deairing pri-marily means the destruction of foam, whereas micro deairing means the removal of very fine air bubbles from the paint.
By means of the feed pump 13, the paint is conveyed through the filter 14 in the paint tank 21 of the paint coating device 15, where it is ap-plied to the paper web 18. The paint being deaired to a high degree, the coat applied to the paper web 18 is at least subst~nti~lly free from mi-15 croscopical air bubbles which might burst open and negatively affect thesurface of the coated paper web 18. Paint is returned from the paint tank 21 to the vacuum mixing tank 3. The paint is supplied to the coat-ing device 15 at a surplus of approxi~ tely 25 to 40, i.e. the coating device 15 is supplied with paint per unit of time in an amount 25 to 40 20 times as high as the quantity that is applied to the paper web 18 after the latter has passed the doctor blade 22. So 95 percent of the paint de-livered by the feed pump 13 to the coating device 15 are recirculated. In particular when the paper web 18 passes the doctor blade 22, particles are picked up from the latter and returned to the paint tank 21 along 25 with the surplus of paint; having passed through the tank 3, these par-ticles are removed in the filter 14.
WHEN APPLIED TO A PAPER WEB
BACl~OUND OF THE INVENTION
FIELD OF THE INVENTION
The invention relates to a method of treating paint when applied to a paper web and an inct~ tion for putting the method into practice.
BACKGROUND ART
In installations of the generic type, the paint is stored in one or several big agitated tanks of vertical agitator a~is, where it is stirred and, 5 having passed through filters, is supplied in excess to the paint coating device. The surplus of paint is returned to the storage tank. In the coating device, paint in an amount of 25 to 40 times the quantity re-quired for coating (brushing) is applied to the paper web. This enormous surplus of paint must be removed from the paper web by means of the 20 doctor blade. Consequently, a considerable amount of air is included in the paint at the doctor blade, which may lead to foaming on the one hand and as a result of which the recirculated pain~ may contain very fine air bubbles which burst open after the final coating of the paper web, which may lead to deterioration of the surface of the coated paper 25 web.
SUMMARY OF THE INVENTION
It is the object of the invention to embody a method and an installation 30 in which problems resulting from the inclusion of air in the paint do not occur.
In a method of the generic type, this object is attained by the features of providing paint, intermediately storing the paint, acting on the paint by partial vacuum during the intermediate storage, filtering the paint, feeding the paint at a high surplus as compared to the quantity of paint applied to the paper web, applying the paint to the paper web, and re-turning the surplus of paint to the paint stored intermediately. In an 5 installation for putting the method into practice, this object is attained by a vacuum mixing tank having a mixing unit that is rotatingly driv-able, by a conduit for the supply of paint discharging into the vacuum mixing tank, by a vacuum duct discharging into the vacuum mixing tank for the production and maintenance of partial vacuum in the vacuum mix-10 ing tank by a flow pipe discharging from the vacuum mixing tank, by afilter disposed in the flow pipe, by a paint coating device connected to the flow pipe for the application of paint to a paper web that is passed through, and by a return pipe connecting the paint coating device with the vacuum mixing tank.
The gist of the invention resides in that after return from the coating device, the paint is stirred comparatively siowly in a gastight tank, while it is subjected to partial vacuum.
20 Further features, advantages and details of the invention will become ap-parent from the ensuing description of an installation for the treating of paint in connection with the coating of a paper web by the paint, taken in conjunction with the drawing.
The drawing figure shows an installation for treating paint.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The installation illustrated in the drawing comprises a mixer 1, in which paint for coated paper is continuously produced from numerous constitu-ents by mixing This ~mished paint is supplied via a conduit 2 to a vacuum mixing tank 3. The latter comprises a gastight drum 4 resistant to pressure and of holi~onlal arrangement, in which a mixing unit 6 drivable by a motor S is disposed centrally.
On the drum 4, provision is made for a vacuum top 7, a so-called dome, 5 which is open towards the interior chamber 8 of the drum 4. A vacuum duct 9 opens into the upper portion of this vacuum top 7, by way of which duct 9 the interior chamber 8 of the drum 4 can be acted upon by partial vacuum. The vacuum pump 10 is driven by a motor 11.
0 A flow pipe 12 discharges from the underside of the drum 4, a feed pump 13 disposed in the flow pipe 12 conveying paint via the latter through a filter 14 to a paint coating device 15, from where paint is returned through a return pipe 16 back into the drum 4.
5 In the filter 14, paper particles, for instance paper fibers, and paint re-agglomerates are separated from the paint for the latter to reach the coating device 15 in a condition not i~lplllirled. This coating device 15 conventionally comprises a rotatable roll 17, along which a paper web 18 to be coated by paint is guided and conveyed in the direction of trans-20 port 19. The direction of rotation of the roll 17 corresponds. A rotatablepaint coating roll 20 is located below the roll 17, bearing against the latter and the paper web 18. The lower side of the coating roll 20 dips into a paint tank 21, from which it collects paint, and applies the paint to the paper web 18. Further, a doctor blade 22 is provided, removing 25 paint applied to the paper web 18 at a surplus of 25 to 40, so that the paper web 18 is only coated by a very thin layer of paint, which is si-multaneously pressed into the surface of the paper web 18 by the doctor blade æ. The flow pipe 12 discharges into the paint tank 21; in like manner, the return pipe 16 discharges from the latter.
In the return pipe 16, a recir~ ting pump 23 can be disposed as a vacuum stop-work, preventing any penetration of the partial vacuum from the drum 4 into the paint tank 21. Likewise, the conduit 2 may have a feed pump 24 equally serving as a vacuum stop-work and precluding any penetration of the partial vacuum from the drum 4 into the mixer 1.
By alternative to the pumps 23, 24 - even taken individually - siphon connecting pipes 25 or 26 can connect the return pipe 16 or the conduit 2 5 with the lower portion, filled with paint, of the drum 4, the deepest point of these siphon connecting pipes 25, 26 being distant from the level 27 of the paint in the drum 4 by a measure L which corresponds to the partical vacuum in the upper portion of the drum 4. This will also help preclude any penetration of the partial vacuum from the drum 4 into the 0 return pipe 16 and thus into the coating device 15 or, respectively, into the conduit 2 and thus into the mixer 1. The necessary length is directly proportional to the partial vacuum prevailing in the upper portion of the drum 4 and inversely proportional to the density of the paint. The siphon connecting pipes 25 and 26 are shown by dotted lines in the drawing. In 15 this embodiment, the mixer 1 and the coating device 15 must be disposed above the level 27 for gravity feed of the paint to be possible.
The vacuum mixing tank 3 is disposed on a balance 28 which ensures that the degree to which the drum 4 is filled, i.e. the level 27 of paint 20 in the drum 4, fluctuates only within a given range. The balance 28 can trigger a solenoid valve 29 in the conduit 2, by means of which the sup-ply of paint from the mixer 1 can be controlled. The balance 28 can also trigger the motor 30 of the feed pump 13, thereby influencing the circu-lation of the paint.
A foam probe 31 is disposed in the vacuum top 7, triggering a ventila-tion valve 32 in the vacuum duct 9 when paint foam penetrates into the vacuum top 7, whereby the partial vacuum in the interior chamber 8 of the drum 4 is destroyed in such a case so that the risk of paint foam 30 penetrating into the vacuum duct 9, and thus into the vacuum pump 10, is elimin:~ted.
The installation works as follows. From the mixer 1, paint is supplied as required via the conduit 2 to the vacuum rnixing tank 3. The quantity supplied per unit of time corresponds to the quantity of paint applied to the paper web 18 in the paint coating device 15. The entire stocks of paint are circlll~te~l in the vacuum mixing tank 3 by the mixing unit 6 which rotates comparatively slowly. This helps ensure good deairing of 5 the paint, owing to the partial vacuum prevailing in the interior chamber 8 of the drum 4, which implies macro deairing as well as micro deairing corresponding to the amount of the partial vacuum. Macro deairing pri-marily means the destruction of foam, whereas micro deairing means the removal of very fine air bubbles from the paint.
By means of the feed pump 13, the paint is conveyed through the filter 14 in the paint tank 21 of the paint coating device 15, where it is ap-plied to the paper web 18. The paint being deaired to a high degree, the coat applied to the paper web 18 is at least subst~nti~lly free from mi-15 croscopical air bubbles which might burst open and negatively affect thesurface of the coated paper web 18. Paint is returned from the paint tank 21 to the vacuum mixing tank 3. The paint is supplied to the coat-ing device 15 at a surplus of approxi~ tely 25 to 40, i.e. the coating device 15 is supplied with paint per unit of time in an amount 25 to 40 20 times as high as the quantity that is applied to the paper web 18 after the latter has passed the doctor blade 22. So 95 percent of the paint de-livered by the feed pump 13 to the coating device 15 are recirculated. In particular when the paper web 18 passes the doctor blade 22, particles are picked up from the latter and returned to the paint tank 21 along 25 with the surplus of paint; having passed through the tank 3, these par-ticles are removed in the filter 14.
Claims (13)
1. A method of treating paint when applied to a paper web, comprising:
- providing paint, - intermediately storing the paint, - acting on the intermediately stored paint by partial vacuum, - filtering the paint, - feeding the paint at a high surplus as compared to the quantity of paint applied to the paper web, - applying the paint to the paper web, and - returning the surplus of paint to the intermediately stored paint.
- providing paint, - intermediately storing the paint, - acting on the intermediately stored paint by partial vacuum, - filtering the paint, - feeding the paint at a high surplus as compared to the quantity of paint applied to the paper web, - applying the paint to the paper web, and - returning the surplus of paint to the intermediately stored paint.
2. A method according to claim 1, wherein the intermediately stored paint is stirred.
3. A method according to claim 1, wherein the paint is fed at a surplus of 25 to 40 as compared to the quantity of paint applied to the paper web.
4. A method according to claim 1, wherein the paint is applied to the paper web under atmospheric pressure.
5. An installation for treating paint when applied to a paper web, comprising:
- a vacuum mixing tank (3) having a mixing unit (6) that is rotatingly drivable, - a conduit (2) for the supply of paint discharging into the vacuum mix-ing tank (3), - a vacuum duct (9) discharging into the vacuum mixing tank (3) for the production and maintenance of partial vacuum in the vacuum mixing tank (3), - a flow pipe (12) discharging from the vacuum mixing tank (3), - a filter (14) disposed in the flow pipe (12), - a paint coating device (15) connected to the flow pipe (12) for the application of paint to a paper web (18) that is passed through, and - a return pipe (16) connecting the paint coating device (15) with the vacuum mixing tank (3).
- a vacuum mixing tank (3) having a mixing unit (6) that is rotatingly drivable, - a conduit (2) for the supply of paint discharging into the vacuum mix-ing tank (3), - a vacuum duct (9) discharging into the vacuum mixing tank (3) for the production and maintenance of partial vacuum in the vacuum mixing tank (3), - a flow pipe (12) discharging from the vacuum mixing tank (3), - a filter (14) disposed in the flow pipe (12), - a paint coating device (15) connected to the flow pipe (12) for the application of paint to a paper web (18) that is passed through, and - a return pipe (16) connecting the paint coating device (15) with the vacuum mixing tank (3).
6. An installation according to claim 5, wherein the vacuum mixing tank (3) comprises a horizontal drum (4) with an interior chamber (8) and having a mixing unit (6) horizontally disposed in the interior chamber (8).
7. An installation according to claim 6, wherein a vacuum top (7) open towards the interior chamber (8) of the vacuum mixing tank (3) is dis-posed on the vacuum mixing tank (3), the vacuum duct (9) discharging into the vacuum top (7).
8. An installation according to claim 5, wherein a foam probe (31) is disposed where the vacuum duct (9) discharges, the foam probe (31) trig-gering a ventilation valve (32) associated with the vacuum duct (9).
9. An installation according to claim 5, wherein at least one vacuum stop-work is provided in at least one of the conduit (2) for the supply of paint and the return pipe (16).
10. An installation according to claim 9, wherein at least one vacuum stop-work is formed by a pump (23, 24).
11. An installation according to claim 9, wherein at least one vacuum stop-work is formed by a siphon connecting pipe (25, 26) between at least one of the return pipe (16) and the conduit (2) for the supply of paint and the vacuum mixing tank (3).
12. An installation according to claim 5, wherein the vacuum mixing tank (3) is disposed on a balance (28) for triggering at least one of supply of paint and flow of the paint.
13. An installation according to claim 5, wherein the paint coating device (15) is subject to atmospheric pressure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1995108178 DE19508178A1 (en) | 1995-03-09 | 1995-03-09 | Process and plant for treating coating color when applied to a paper web |
| DE19508178.1 | 1995-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2170929A1 true CA2170929A1 (en) | 1996-09-10 |
Family
ID=7756008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2170929 Abandoned CA2170929A1 (en) | 1995-03-09 | 1996-03-04 | Method and installation for treating paint when applied to a paper web |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0731213A2 (en) |
| CA (1) | CA2170929A1 (en) |
| DE (1) | DE19508178A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI103290B1 (en) * | 1997-11-13 | 1999-05-31 | Valmet Raisio Oy | A method and arrangement for separating impurities from a machine cycle of a coating station |
| FI104577B (en) * | 1998-05-25 | 2000-02-29 | Valmet Raisio Oy | Method and apparatus for loading processing means into a processing device for a paper or cardboard web |
| DE20321832U1 (en) * | 2003-09-16 | 2010-12-30 | Voith Patent Gmbh | Device for coating color preparation |
| DE102004005080A1 (en) * | 2004-02-02 | 2005-08-18 | Voith Paper Patent Gmbh | Continuous controlled coating color preparation |
| EP1700953B1 (en) * | 2005-03-10 | 2008-11-26 | Sappi Alfeld GmbH | Process for cleaning and recycling of a coating color |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE390317B (en) * | 1975-04-28 | 1976-12-13 | Billeruds Ab | SET FOR SURFACE COATING OF A COURSE WITH A VETSKA |
| DE3713278A1 (en) * | 1986-04-30 | 1987-11-05 | Will E C H Gmbh & Co | Process and device for applying a flowable composition onto a web |
| DD276039A1 (en) * | 1988-10-12 | 1990-02-14 | Wolfen Filmfab Veb | METHOD FOR COATING MATERIAL TRACKS |
| DE4002256A1 (en) * | 1990-01-26 | 1991-08-01 | Voith Gmbh J M | Cardboard web coating - has grooved roller spreader and web guide roller to give thin in layer of coating mass |
| DE3935476A1 (en) * | 1989-10-25 | 1991-05-02 | Mueller Thomas Gmbh | Bubbles elimination from PCB coating fluid - is obtained using low pressure environment |
| DE4031437C2 (en) * | 1990-10-04 | 1997-01-16 | Dielektra Gmbh | Method and device for impregnating a carrier web |
| DE4205993A1 (en) * | 1992-02-27 | 1993-09-02 | Jagenberg Ag | DEVICE FOR APPLYING COATING MATERIAL ON A RUNNING MATERIAL RAIL |
| DE4230276A1 (en) * | 1992-09-10 | 1994-03-17 | Voith Gmbh J M | Coating device for running webs, especially paper or cardboard |
| DE4309002A1 (en) * | 1993-03-20 | 1994-09-22 | Voith Gmbh J M | Dosing device for coating running webs, preferably made of paper or cardboard |
-
1995
- 1995-03-09 DE DE1995108178 patent/DE19508178A1/en not_active Withdrawn
-
1996
- 1996-03-02 EP EP96103246A patent/EP0731213A2/en not_active Withdrawn
- 1996-03-04 CA CA 2170929 patent/CA2170929A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE19508178A1 (en) | 1996-09-12 |
| EP0731213A3 (en) | 1996-10-16 |
| EP0731213A2 (en) | 1996-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |