CA2051579C - Procedure and apparatus for glazing a paper or cardboard web - Google Patents
Procedure and apparatus for glazing a paper or cardboard web Download PDFInfo
- Publication number
- CA2051579C CA2051579C CA002051579A CA2051579A CA2051579C CA 2051579 C CA2051579 C CA 2051579C CA 002051579 A CA002051579 A CA 002051579A CA 2051579 A CA2051579 A CA 2051579A CA 2051579 C CA2051579 C CA 2051579C
- Authority
- CA
- Canada
- Prior art keywords
- web
- belt
- coating
- drying
- thermally conductive
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000011111 cardboard Substances 0.000 title claims abstract description 19
- 239000011087 paperboard Substances 0.000 title claims description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 64
- 238000000576 coating method Methods 0.000 claims abstract description 64
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims description 47
- 238000001816 cooling Methods 0.000 claims description 11
- 238000009489 vacuum treatment Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000036961 partial effect Effects 0.000 description 7
- 238000003490 calendering Methods 0.000 description 5
- 239000000123 paper Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 241001052209 Cylinder Species 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/009—Apparatus for glaze-coating paper webs
Abstract
The invention concerns a procedure for glazing a cardboard web, the coated side of the web (1), dry matter content less than 80% by weight, being contacted with the surface of a heated, smooth belt (2), and the opposite side of the web being contacted with a cooled belt (3) or equivalent, and apparatus for implementing the procedure, comprising a smooth belt (2) with heating means (7) for heating the belt, placed immediately after the coating means (4) so that the web is conducted onto the belt immediately after the coating means, with the coating against the belt.
Description
PROCEDURE AND APPARATUS FOR GLAZING A PAPER OR
CARDBOARD WEB
The present invention concerns a procedure for glazing a paper or cardboard web, a coating being ap-plied on one side of the web, the web being dried and the coating glazed.
The invention further concerns apparatus for glazing a paper or cardboard web, comprising a coating means and a drying means.
The methods used to perform glazing of paper and cardboard can be classified by two main groups. To the first main group belong those procedures in which the paper is coated in conventional manner and the coating, dried close to its ultimate dry matter con-tent, is glossed. This group includes several greatly different techniques, such as e.g. brush glossing and high-gloss calendering.
The second main group consists of those pro cedures in which the coating is dried and glazed on one glossy drying cylinder. This process is known as pour coating.
No very good gloss is achieved with mere brush glossing, and this method is therefore mostly applied in supplementation of calendering. However, calendering has invariably an adverse effect on bulk and stiffness of the cardboard.
In the glossing methods, the pigment coating is first dried, using convection and radiation drying procedures of prior art, and thereafter glossed, using brush glossing or high-gloss calendering. It is however usually necessary to varnish such cardboard which is meant to be printed on, owing to insufficient gloss.
Pour coating gives substantially better gloss than, for instance, brush glossing and high-gloss calendering. Moreover the bulk is not lessened in pour coating. However, the pour coating technique in present ~~~i~.~"~
CARDBOARD WEB
The present invention concerns a procedure for glazing a paper or cardboard web, a coating being ap-plied on one side of the web, the web being dried and the coating glazed.
The invention further concerns apparatus for glazing a paper or cardboard web, comprising a coating means and a drying means.
The methods used to perform glazing of paper and cardboard can be classified by two main groups. To the first main group belong those procedures in which the paper is coated in conventional manner and the coating, dried close to its ultimate dry matter con-tent, is glossed. This group includes several greatly different techniques, such as e.g. brush glossing and high-gloss calendering.
The second main group consists of those pro cedures in which the coating is dried and glazed on one glossy drying cylinder. This process is known as pour coating.
No very good gloss is achieved with mere brush glossing, and this method is therefore mostly applied in supplementation of calendering. However, calendering has invariably an adverse effect on bulk and stiffness of the cardboard.
In the glossing methods, the pigment coating is first dried, using convection and radiation drying procedures of prior art, and thereafter glossed, using brush glossing or high-gloss calendering. It is however usually necessary to varnish such cardboard which is meant to be printed on, owing to insufficient gloss.
Pour coating gives substantially better gloss than, for instance, brush glossing and high-gloss calendering. Moreover the bulk is not lessened in pour coating. However, the pour coating technique in present ~~~i~.~"~
use cannot be applied as an on-line process on paper or cardboard machines. This is because the highest running speeds of modern cardboard machines are on the order of 400 to 600 m/min, and paper machines have running speeds up to the order of 1300 m/min. In contrast, the highest feasible running speed in pour coating is on the order of about 100 m/min. The low speed of pour coating is due to the fact that the water to be evapo-rated from the coating has to be removed on one cylin-der through the base web, that is, the wet coating is conducted against a polished cylinder and dewatered through the opposite side of the web. When pour coating is used, the largest possible cylinder diameter is on the order of about 5 m, and this imposes a limit on the region that is available for evaporation, and thus on the drying capacity of the entire process.
The object of the present invention is to eliminate these drawbacks. It is a particular object of the invention, to further develop the pour coasting process so that its effectiveness, and the capacity of the pour coating machine, can be raised to be higher than before, retaining at the same time'the advantages that can be gained with pour coating.
~2egarding the features characterizing the invention, reference is made to the claims section.
It has been found in investigating the factors affecting the rate of evaporation in connection with the drying of pigment coating on paper or cardboard, that the evaporation rate is affected by the partial pressure of the evaporating substance, that is water, in the close neighbourhood of the evaporatian eurface compared with the pressure of saturated vapour corres-ponding to the temperature in the case, and to the par-tial pressure of any other gases in the region. If dry-ing takes place under atmospheric pressure, the,~artial pressure of air will be 'substantially higher than the partial pressure of water vapour. Presence of air re-~~515~~ i tards the evaporation of water substantially. The evap-oration rate can be multiplied by removing the air.
Heretofore the so-called Condebelt technique has been employed in connection with papermaking to dry the web. The Condebelt technique is based on the expe dient of reducing the air pressure in the pores of the web prior to drying, in addition to which the water vapour produced by evaporation is condensed by cooling, in order to keep the partial pressure of water vapour as low as possible in the evaporating region. The Condebelt technique has not heretofore been used in connection with drying a coating, to say nothing of glazing a coating.
The present invention is based on utilization of the Condebelt technique in connection with coating paper and/or cardboard, and in particular with its glazing. As taught by the invention, the coated side of the paper or cardboard web, dry matter content of the coating less than 80~, is contacted with a heated, smooth, endless and thermally well conductive surface, such as a burnished metal belt, and the opposite side of the web is contacted with a cooled belt, such as a drying felt or equivalent. The moisture present in the coating will then move through the web and it will depart from the web through the opposite side of the web while the coating is in contact with the smooth surface of the belt, so that the gloss of the coating increases during the drying process.
It is thus understood that in the procedure of the invention the Condebelt technique, known in itself in the art in connection with paper drying, is utiliz ed, the coating being, in addition to drying, glazed with the aid of said technique in contact with a smooth belt, e.g. a metallic belt, the coating thus being simultaneously glazed in conjunction with drying. In the procedure, the evaporation rate is mux~tiplied as compared with traditional techniques, by lowering the partial pressure of air and water vapour in the pores of the web. The specific novelty of the procedure is seen in the simultaneous drying and glazing of the coating. Production of gloss is based, in this procedure, on the fact that the exceedingly smooth and glossy metal surface is replicated on the surface of the wet, and malleable, surface of the coating.
Thanks to the invention, the running speeds can be substantially increased in conjunction with paper coating and glazing. Thanks to the invention, a paper or cardboard web can even be coated in an on-line process adjoined to a paper or cardboard machine. The power applied in io drying the coating can be raised to desired level because in the Condebelt technique a metallic belt is used for heat transmitter, instead of a cylinder, and this belt can be made as long as seems desirable, without its imposing any limits on the evaporation distance. If desired, and whenever the drying capacity requires, it is also possible to join a plurality of Condebelt units in i5 succession so that the desired drying capacity will be achieved.
It is particularly essential in the procedure of the invention that the coated side of the web, that is the coating, is contacted with the surface of a heated, smooth and endless belt with good thermal conductivity, immediately after applying the coating and while the coating is moist, 2 o dry matter content of no more than 80% by weight, advantageously less than 70°r6 but at least about 45°~ by weight. Thus, a novel embodiment of the pour coating technique is now concerned. Upon drying the web, the moisture being removed through the web and through the side of the web which is opposed to the coating, the web is released from contact with the 25 smooth belt. The drying technique here employed, the Condebelt technique, is in itself previously known e.g. through the Finnish Patents FI-54514, FI-55539 and FI-59635. In the procedure and apparatus of the invention the drying technique and associated vacuum technique known through the references cited, or otherwise, may be applied.
The invention is described in the following in detail with the aid of an embodiment example, referring to the attached drawing presenting an apparatus accord ing to the invention fox implementing the procedure.
In Fig. 1 is depicted an apparatus according to the invention for glazing a cardboard web. The apparatus comprises a coating means 4 and a drying means 5. The coating means 4 comprises a conventional applicator roll 15 for spreading the coating material on the surface of the web l, a doctor blade 16 for lev-elling the coating, and a backing roll 17, which the web is conducted to lap, running in the direction indicated by arrow 18. The coating means may be any kind of coating means applied in itself in connection with coating paper and/or cardboard.
The drying means 5 comprises an endless, ther mally well conductive, polished metallic belt 2, and a heating means 7 for heating this belt e.g. with the aid of steam. The belt 2 is disposed immediately after the coating means 4 in that the web 1 has been conducted onto the belt immediately after the coating means, with the coating against the polished face of the belt so that the dry matter content of the coating is less than 80~ by weight when the coating is being conducted against the belt 2.
Furthermore, the drying means 8 comprises a drying felt 1' with rolls 12 and drying apparatus i3.
The drying felt is conducted to run around the rolls 12 in the travelling direction of the web with a speed consistent with that of the web, i..e., of the belt 2.
The drying means 5 further comprises and endless, and thermally well conductive, belt 2' with associated rolls and cooling member 8; the belt 2' is conducted to run around the rolls 6' in the direction of travel of ~~5~. i'~'~
The object of the present invention is to eliminate these drawbacks. It is a particular object of the invention, to further develop the pour coasting process so that its effectiveness, and the capacity of the pour coating machine, can be raised to be higher than before, retaining at the same time'the advantages that can be gained with pour coating.
~2egarding the features characterizing the invention, reference is made to the claims section.
It has been found in investigating the factors affecting the rate of evaporation in connection with the drying of pigment coating on paper or cardboard, that the evaporation rate is affected by the partial pressure of the evaporating substance, that is water, in the close neighbourhood of the evaporatian eurface compared with the pressure of saturated vapour corres-ponding to the temperature in the case, and to the par-tial pressure of any other gases in the region. If dry-ing takes place under atmospheric pressure, the,~artial pressure of air will be 'substantially higher than the partial pressure of water vapour. Presence of air re-~~515~~ i tards the evaporation of water substantially. The evap-oration rate can be multiplied by removing the air.
Heretofore the so-called Condebelt technique has been employed in connection with papermaking to dry the web. The Condebelt technique is based on the expe dient of reducing the air pressure in the pores of the web prior to drying, in addition to which the water vapour produced by evaporation is condensed by cooling, in order to keep the partial pressure of water vapour as low as possible in the evaporating region. The Condebelt technique has not heretofore been used in connection with drying a coating, to say nothing of glazing a coating.
The present invention is based on utilization of the Condebelt technique in connection with coating paper and/or cardboard, and in particular with its glazing. As taught by the invention, the coated side of the paper or cardboard web, dry matter content of the coating less than 80~, is contacted with a heated, smooth, endless and thermally well conductive surface, such as a burnished metal belt, and the opposite side of the web is contacted with a cooled belt, such as a drying felt or equivalent. The moisture present in the coating will then move through the web and it will depart from the web through the opposite side of the web while the coating is in contact with the smooth surface of the belt, so that the gloss of the coating increases during the drying process.
It is thus understood that in the procedure of the invention the Condebelt technique, known in itself in the art in connection with paper drying, is utiliz ed, the coating being, in addition to drying, glazed with the aid of said technique in contact with a smooth belt, e.g. a metallic belt, the coating thus being simultaneously glazed in conjunction with drying. In the procedure, the evaporation rate is mux~tiplied as compared with traditional techniques, by lowering the partial pressure of air and water vapour in the pores of the web. The specific novelty of the procedure is seen in the simultaneous drying and glazing of the coating. Production of gloss is based, in this procedure, on the fact that the exceedingly smooth and glossy metal surface is replicated on the surface of the wet, and malleable, surface of the coating.
Thanks to the invention, the running speeds can be substantially increased in conjunction with paper coating and glazing. Thanks to the invention, a paper or cardboard web can even be coated in an on-line process adjoined to a paper or cardboard machine. The power applied in io drying the coating can be raised to desired level because in the Condebelt technique a metallic belt is used for heat transmitter, instead of a cylinder, and this belt can be made as long as seems desirable, without its imposing any limits on the evaporation distance. If desired, and whenever the drying capacity requires, it is also possible to join a plurality of Condebelt units in i5 succession so that the desired drying capacity will be achieved.
It is particularly essential in the procedure of the invention that the coated side of the web, that is the coating, is contacted with the surface of a heated, smooth and endless belt with good thermal conductivity, immediately after applying the coating and while the coating is moist, 2 o dry matter content of no more than 80% by weight, advantageously less than 70°r6 but at least about 45°~ by weight. Thus, a novel embodiment of the pour coating technique is now concerned. Upon drying the web, the moisture being removed through the web and through the side of the web which is opposed to the coating, the web is released from contact with the 25 smooth belt. The drying technique here employed, the Condebelt technique, is in itself previously known e.g. through the Finnish Patents FI-54514, FI-55539 and FI-59635. In the procedure and apparatus of the invention the drying technique and associated vacuum technique known through the references cited, or otherwise, may be applied.
The invention is described in the following in detail with the aid of an embodiment example, referring to the attached drawing presenting an apparatus accord ing to the invention fox implementing the procedure.
In Fig. 1 is depicted an apparatus according to the invention for glazing a cardboard web. The apparatus comprises a coating means 4 and a drying means 5. The coating means 4 comprises a conventional applicator roll 15 for spreading the coating material on the surface of the web l, a doctor blade 16 for lev-elling the coating, and a backing roll 17, which the web is conducted to lap, running in the direction indicated by arrow 18. The coating means may be any kind of coating means applied in itself in connection with coating paper and/or cardboard.
The drying means 5 comprises an endless, ther mally well conductive, polished metallic belt 2, and a heating means 7 for heating this belt e.g. with the aid of steam. The belt 2 is disposed immediately after the coating means 4 in that the web 1 has been conducted onto the belt immediately after the coating means, with the coating against the polished face of the belt so that the dry matter content of the coating is less than 80~ by weight when the coating is being conducted against the belt 2.
Furthermore, the drying means 8 comprises a drying felt 1' with rolls 12 and drying apparatus i3.
The drying felt is conducted to run around the rolls 12 in the travelling direction of the web with a speed consistent with that of the web, i..e., of the belt 2.
The drying means 5 further comprises and endless, and thermally well conductive, belt 2' with associated rolls and cooling member 8; the belt 2' is conducted to run around the rolls 6' in the direction of travel of ~~5~. i'~'~
the web. The belts 2 and 2' constitute a pair of belts in which the belts run in parallel between the rolls 6 and 6', respectively, pressed against each other. The drying felt 1' and the web disposed upon this drying felt are conducted in between the belts 2,2'.
The polished belt 2 lying against the coating is heated with the aid of a heating means 7; the drying felt under the web is continuously cooled with the cooling means 8 of the belt 1'. The moisture will then move from the coating through the web 2 into the drying felt, and it will condense therein. The drying felt is continuously dried with the aid of the drying means 13, as it makes its circuit of the rolls 12. After passing through the drying means 1, the web is released from the drying felt and conducted to another drying means 5' operating according to the Condebelt technique.
Prior to being conducted into contact with the belt 2, the web has been subjected to vacuum treatment for air removal from the web, that is for reducing the air pressure within the web and the drying felt, in order to enhance the drying process. Web and drying felt are conducted in between the belt 2 immediately following vacuum treatment. The belts 2 and 2' are im-permeable to air, and the vacuum treatment of web and felt lowers the air pressure in the web and in the felt, this promoting the drying of the web as the par-tial pressure of air in the felt is lower than before and thereby the partial pressure of water vapour is en-abled to be higher than normal.
The heating means 7 of'the belt 2 may be any heating means whatsoever, e.g: electric, gas flame-operated, steam-operated, etc. The heating means may further comprise e.g. a liquid removal means far elim3.--nating the condensed steam.
The cooling means serving the belt 2' and the felt 1' may be any kind of cooling means known in itself in the art, e:g. one operating with a cooled fluid. Furthermore, the drying means 13 serving the felt 1' may be any kind of drying means known in itself in the art, for instance one based on pressure rolls, a heating appliance, vacuum apparatus, etc. Furthermore, the vacuum means 10 may be of any kind whatsoever, based e.g. on vacuum chambers connected with pipelines 20 to a vacuum pump, and sealed against the web 1 and/or the felt 1'.
In the embodiment here presented, the web 1 is carried in between two belts 2,2' impermeable to air, e.g. of metal, upon a felt 1'. The web may alternative ly be conducted to lie against the belt 2, merely upon the felt 1', in which case the cooling means 8 is dis posed to cool the felt directly. Z'he felt may in that case be either impermeable or permeable to air.
The embodiment example is meant to illustrate the invention, and the invention is not meant to be confined to the embodiment example; in contrast, its embodiments may vary within the scope of the claims following below.
The polished belt 2 lying against the coating is heated with the aid of a heating means 7; the drying felt under the web is continuously cooled with the cooling means 8 of the belt 1'. The moisture will then move from the coating through the web 2 into the drying felt, and it will condense therein. The drying felt is continuously dried with the aid of the drying means 13, as it makes its circuit of the rolls 12. After passing through the drying means 1, the web is released from the drying felt and conducted to another drying means 5' operating according to the Condebelt technique.
Prior to being conducted into contact with the belt 2, the web has been subjected to vacuum treatment for air removal from the web, that is for reducing the air pressure within the web and the drying felt, in order to enhance the drying process. Web and drying felt are conducted in between the belt 2 immediately following vacuum treatment. The belts 2 and 2' are im-permeable to air, and the vacuum treatment of web and felt lowers the air pressure in the web and in the felt, this promoting the drying of the web as the par-tial pressure of air in the felt is lower than before and thereby the partial pressure of water vapour is en-abled to be higher than normal.
The heating means 7 of'the belt 2 may be any heating means whatsoever, e.g: electric, gas flame-operated, steam-operated, etc. The heating means may further comprise e.g. a liquid removal means far elim3.--nating the condensed steam.
The cooling means serving the belt 2' and the felt 1' may be any kind of cooling means known in itself in the art, e:g. one operating with a cooled fluid. Furthermore, the drying means 13 serving the felt 1' may be any kind of drying means known in itself in the art, for instance one based on pressure rolls, a heating appliance, vacuum apparatus, etc. Furthermore, the vacuum means 10 may be of any kind whatsoever, based e.g. on vacuum chambers connected with pipelines 20 to a vacuum pump, and sealed against the web 1 and/or the felt 1'.
In the embodiment here presented, the web 1 is carried in between two belts 2,2' impermeable to air, e.g. of metal, upon a felt 1'. The web may alternative ly be conducted to lie against the belt 2, merely upon the felt 1', in which case the cooling means 8 is dis posed to cool the felt directly. Z'he felt may in that case be either impermeable or permeable to air.
The embodiment example is meant to illustrate the invention, and the invention is not meant to be confined to the embodiment example; in contrast, its embodiments may vary within the scope of the claims following below.
Claims (9)
1. A method for glazing a paper or cardboard web, the method comprising the steps of:
applying a coating having a moisture content, and a dry matter content of no more than 80% by weight on one side of the web to give a coated side of the web a gloss finish, and an uncoated side;
glazing the coated side by bringing it into contact with a heated, smooth, endless and thermally conductive belt; and bringing the uncoated side into contact with a cooled belt so that the moisture content present in the coating moves through the web and departs from the web through the uncoated side while the coating is in contact with the smooth belt, thereby increasing the gloss of the coating.
applying a coating having a moisture content, and a dry matter content of no more than 80% by weight on one side of the web to give a coated side of the web a gloss finish, and an uncoated side;
glazing the coated side by bringing it into contact with a heated, smooth, endless and thermally conductive belt; and bringing the uncoated side into contact with a cooled belt so that the moisture content present in the coating moves through the web and departs from the web through the uncoated side while the coating is in contact with the smooth belt, thereby increasing the gloss of the coating.
2. The method according to claim 1, wherein air is removed from the web by means of vacuum treatment.
3. The method according to claim 2, wherein the dry matter content of the coating is in the range of 45% to 80% by weight.
4. The method according to any one of claims 1-3, wherein the web and a drying felt are conducted in between two endless and thermally conductive belts impermeable to air, of which the belt adjacent to the coated side is heated and the other belt is cooled.
5. An apparatus for glazing a paper or cardboard web, comprising a coating means for applying a coating having a dry matter content and a moisture content on a coated side of the web to give the coated side a gloss finish, and an uncoated side, a drying means with cooling means, wherein the drying means comprises a smooth, endless and thermally conductive belt with rolls and with heating means for heating the belt, the belt is disposed immediately after the coating means, and the web is conducted onto the belt immediately after the coating means such that the coated side lies against the belt, so that the dry matter content of the coating is less than 80% by weight, the cooling means cools the uncoated side of the web, and the web is released from contact with the belt after the coating has dried and become glazed against the belt.
6. The apparatus according to claim 5, wherein the apparatus comprises a vacuum means for removing air from the web by vacuum treatment.
7. The apparatus according to any one of claims 5 and 6, wherein the drying means comprises a drying felt attached to the thermally conductive belt, the web being conducted onto the felt, and the cooling means comprises an endless and thermally conductive belt with rolls and means for cooling the uncoated side of the web.
8. The apparatus according to claim 7, wherein each thermally conductive belt is a smooth metallic belt and the belts are arranged to run, on part of their paths, parallel and lying against each other, so that the web is conducted in between the belts.
9. The apparatus according to claim 8, wherein the apparatus comprises a plurality of pairs of smooth metallic belts with rolls and heating and cooling means, which are placed one after the other in the direction of travel of the web, so that the web is conducted between the pairs of belts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI904638A FI90366C (en) | 1990-09-20 | 1990-09-20 | Method and apparatus for smoothing a paper or cardboard web |
| FI904638 | 1990-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2051579A1 CA2051579A1 (en) | 1992-03-25 |
| CA2051579C true CA2051579C (en) | 2005-06-14 |
Family
ID=8531092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002051579A Expired - Lifetime CA2051579C (en) | 1990-09-20 | 1991-09-17 | Procedure and apparatus for glazing a paper or cardboard web |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0478525B1 (en) |
| JP (1) | JP3090731B2 (en) |
| AT (1) | ATE134730T1 (en) |
| CA (1) | CA2051579C (en) |
| DE (1) | DE69117412T2 (en) |
| FI (1) | FI90366C (en) |
| NO (1) | NO178202C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI980106A (en) | 1998-01-19 | 1999-07-20 | Idi Head Oy | Surface treatment method in particular for improving the barrier and application properties of webs |
| DE19952204B4 (en) * | 1999-10-29 | 2004-02-05 | Man Roland Druckmaschinen Ag | Method and device for processing sheet material in a rotary printing press |
| FI20000734A0 (en) * | 2000-03-30 | 2000-03-30 | Valmet Corp | Method and apparatus for making coated and glossy paper or cardboard |
| FI119564B (en) * | 2001-03-09 | 2008-12-31 | Metso Paper Inc | Procedure and arrangement for the production of printing paper |
| US6701637B2 (en) | 2001-04-20 | 2004-03-09 | Kimberly-Clark Worldwide, Inc. | Systems for tissue dried with metal bands |
| DE10157723B4 (en) * | 2001-11-24 | 2005-12-22 | Voith Paper Patent Gmbh | Apparatus and method for smoothing a paper or board web |
| WO2006003263A1 (en) * | 2004-07-02 | 2006-01-12 | Metso Paper, Inc. | Method and apparatus for coating a fibrous web |
| JP4619328B2 (en) * | 2006-07-31 | 2011-01-26 | 大王製紙株式会社 | Single glossy kraft paper and manufacturing method thereof |
| EP2708645A1 (en) * | 2012-09-17 | 2014-03-19 | Metso Paper Inc. | An arrangement and a method for producing coated board |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1098348B (en) * | 1954-04-26 | 1961-01-26 | Richard Billhoefer Maschinenfa | Calender for producing high gloss on papers, cardboard or the like provided with varnish coatings. |
| CH359354A (en) * | 1958-12-18 | 1961-12-31 | Weustenraad Alfred | Process for glazing a layer of resin covering a sheet of paper or similar material and installation for the implementation of this process |
| GB887737A (en) * | 1959-02-26 | 1962-01-24 | Technical Waxes Ltd | Improvements relating to apparatus and methods for glaze coating paper and the like |
| GB2136027B (en) * | 1983-03-03 | 1986-09-24 | Matsumoto Kikai Manufacturing | Calendering sheet paper |
| US4624744A (en) * | 1984-05-18 | 1986-11-25 | S. D. Warren Company | Method of finishing paper utilizing substrata thermal molding |
| FI80102C (en) * | 1988-07-01 | 1990-04-10 | Tampella Oy Ab | FOERFARANDE OCH ANORDNING FOER TORKNING AV EN FIBERBANA. |
-
1990
- 1990-09-20 FI FI904638A patent/FI90366C/en active IP Right Grant
-
1991
- 1991-09-17 NO NO913654A patent/NO178202C/en not_active IP Right Cessation
- 1991-09-17 CA CA002051579A patent/CA2051579C/en not_active Expired - Lifetime
- 1991-09-20 EP EP91850230A patent/EP0478525B1/en not_active Expired - Lifetime
- 1991-09-20 AT AT91850230T patent/ATE134730T1/en not_active IP Right Cessation
- 1991-09-20 DE DE69117412T patent/DE69117412T2/en not_active Expired - Lifetime
- 1991-09-24 JP JP03243856A patent/JP3090731B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FI904638A0 (en) | 1990-09-20 |
| FI90366C (en) | 1994-01-25 |
| NO913654D0 (en) | 1991-09-17 |
| NO178202B (en) | 1995-10-30 |
| JPH04257393A (en) | 1992-09-11 |
| ATE134730T1 (en) | 1996-03-15 |
| FI904638A (en) | 1992-03-25 |
| DE69117412T2 (en) | 1996-10-24 |
| EP0478525A2 (en) | 1992-04-01 |
| NO913654L (en) | 1992-03-25 |
| EP0478525A3 (en) | 1992-07-22 |
| DE69117412D1 (en) | 1996-04-04 |
| CA2051579A1 (en) | 1992-03-25 |
| NO178202C (en) | 1996-02-07 |
| EP0478525B1 (en) | 1996-02-28 |
| FI90366B (en) | 1993-10-15 |
| JP3090731B2 (en) | 2000-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKEC | Expiry (correction) |
Effective date: 20121202 |