CA1172863A - Apparatus and process for a decurling system - Google Patents
Apparatus and process for a decurling systemInfo
- Publication number
- CA1172863A CA1172863A CA000398833A CA398833A CA1172863A CA 1172863 A CA1172863 A CA 1172863A CA 000398833 A CA000398833 A CA 000398833A CA 398833 A CA398833 A CA 398833A CA 1172863 A CA1172863 A CA 1172863A
- Authority
- CA
- Canada
- Prior art keywords
- steam
- web material
- web
- air
- shower
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/34—Apparatus for taking-out curl from webs
Landscapes
- Treatment Of Fiber Materials (AREA)
- Paper (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Advancing Webs (AREA)
- Glass Compositions (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
- Metal Rolling (AREA)
- Coating Apparatus (AREA)
- Soil Working Implements (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An apparatus and process are disclosed for an efficient decurling system wherein a web material is introduced into a steam environment such that the distance between the web and the steam source is maintained substantially constant.
An apparatus and process are disclosed for an efficient decurling system wherein a web material is introduced into a steam environment such that the distance between the web and the steam source is maintained substantially constant.
Description
~ 2~63 APPAP~ATUS AND PROC~SS FOR A ~ECURLING SYSTEM
BACKGROUND OF THE INVENTION
This invention relates to a decurling operation and more specifically to a steam shower decurling system which is markedly more efficient and effective in achieving improved decurling capacity than traditional steam shower operations.
As iS commonly known, when a web material is supplied in the form of a roll there is an initial curl in the web depending on such factors as the length of time the roll has been stored in stock and variation in the roll dia-meter, such as the curvature of the different convolutions making up the roll. In order to compensate for these influences on the straightness of a web, it has been found necessary to provide certain prescribed treatments to straighten the web material such as described in U.S.
Patents 3,1aS,6:16 and 3,649,447, ~o that when it is ulti~
mately cut lnto sheets, the handling of the sheets may be facilitated and the undesirable curling effect eliminated.
While these existing devices for straightening webs have been found useful, they have not been altogether satis-factory in ~he sense that they are expensive and/or re-quire complicated mechanisms.
I ~l~7~3 In the case of paper, it is known that increasing the moisture con~ent of the paper will lead to less trouble from curling than paper having a lower moisture content.
~ith respect to a coated sheet, for example, it is known that the latter will tend to curl towards the last side coated, and thus moisture is applied to the side opposite to which the sheet otherwise would tend to curl. Thus, as regards the paper industry, the controlled and uniform application of moisture to raw stock and/or coated webs is a goal of distinct importance.
Several methods have been proposed for applying mois-ture to a moving sheet or web. Examples of these include roll applicators such as the Dahlgren-type systems, elec-trostatic systems such as disclosed in U.S. Patent 3,467,541 and steam shower devices. Other examples for adding moisture to a web include a method and apparatus for applying steam to and condensing moisture on a web that is backed by a heat conducting body, as disclosed in U.S.
Patent 2,370,811 and ~ device that directs a humid atmos-phere towards the web, as disclosed in U.S. Patent 3,238,635.
While these and other techniques have been Eound useful in applying moisture to a paper work piece so as to minimize the undesirable curling properties of the paper, there have been found inherent disadvantages in their use. In one instance for example, condensation of steam vapor on the web is produced because the web is backed by a heat sink or me-~al roll through which a cooling fluid is passed.
In the case where humid atmosphere is directed toward the web the SySteln has been proven to be inefficient. Furthermore,
BACKGROUND OF THE INVENTION
This invention relates to a decurling operation and more specifically to a steam shower decurling system which is markedly more efficient and effective in achieving improved decurling capacity than traditional steam shower operations.
As iS commonly known, when a web material is supplied in the form of a roll there is an initial curl in the web depending on such factors as the length of time the roll has been stored in stock and variation in the roll dia-meter, such as the curvature of the different convolutions making up the roll. In order to compensate for these influences on the straightness of a web, it has been found necessary to provide certain prescribed treatments to straighten the web material such as described in U.S.
Patents 3,1aS,6:16 and 3,649,447, ~o that when it is ulti~
mately cut lnto sheets, the handling of the sheets may be facilitated and the undesirable curling effect eliminated.
While these existing devices for straightening webs have been found useful, they have not been altogether satis-factory in ~he sense that they are expensive and/or re-quire complicated mechanisms.
I ~l~7~3 In the case of paper, it is known that increasing the moisture con~ent of the paper will lead to less trouble from curling than paper having a lower moisture content.
~ith respect to a coated sheet, for example, it is known that the latter will tend to curl towards the last side coated, and thus moisture is applied to the side opposite to which the sheet otherwise would tend to curl. Thus, as regards the paper industry, the controlled and uniform application of moisture to raw stock and/or coated webs is a goal of distinct importance.
Several methods have been proposed for applying mois-ture to a moving sheet or web. Examples of these include roll applicators such as the Dahlgren-type systems, elec-trostatic systems such as disclosed in U.S. Patent 3,467,541 and steam shower devices. Other examples for adding moisture to a web include a method and apparatus for applying steam to and condensing moisture on a web that is backed by a heat conducting body, as disclosed in U.S.
Patent 2,370,811 and ~ device that directs a humid atmos-phere towards the web, as disclosed in U.S. Patent 3,238,635.
While these and other techniques have been Eound useful in applying moisture to a paper work piece so as to minimize the undesirable curling properties of the paper, there have been found inherent disadvantages in their use. In one instance for example, condensation of steam vapor on the web is produced because the web is backed by a heat sink or me-~al roll through which a cooling fluid is passed.
In the case where humid atmosphere is directed toward the web the SySteln has been proven to be inefficient. Furthermore,
-2-:~` 1~7Z~;3 in the case where steam showers are employed directly, decurling has been strictly governed by the steam pressure employed at the shower head. Lack of eEfective decurling leads to the utilization or reliance upon excessive steam pressures and/or reduced machine speeds. A change in pressure has been demonstrated to have an effect on other important variables such as the web ternperature, web-to-shower distance and steam billowing. In addition, decurling regulated by steam pressure alone is uneconomical and inefficient. With a free floating web, a high level of exhaust is required to counter the rise in web~to-shower distance and to control the billowing effect resulting from the additional steam usage, the increased amount of steam required, which is essential to decurling, being drawn away by the exhaust. The resulting lack of decurling capacity leads to costly limitations on both quantity and quality.
SUMMARY OF THE TNVENTION
.. ... . ...._ It is, therefore, an object of the present invention to provide a steam decurling system ~or a web material, such as a coated paper stock, which will overcome the above noted disadvantages.
It is a further object of the present invention to provide a steam decurling configuration which stabilizes ¦ the web material in the vicinity of the site of steam I emission.
I
11 i';~863 It is another object of the present invention to provide a steam decurling apparatus and process which effectively regulates the distance of the web material to the steam shower under variable operating conditions.
Sti~, a further object of the present invention is to provide a system whereby the web to shower distance is maintained relatively constant without contact with the web material.
Another object of the present invention is to provide a steam decurling system which eliminates fluttering of the treated web material to produce a more uniform steam application and penetration.
It is still another object of the present invention to effectively cool the web so as to realixe more eficient steam condensation.
Yet, still a further object oE the pre.sent invention is to provide a decurling configuration wherein the area about tha steam shower is confined so as to closely control the billowing effect produced by the steam with minimal exhaust.
Yet, another object of the present invention is to provide an effective decurling operation while substan-tially reducing the amount of normal steam pressure required during the process.
~ Z~;3 The foregoing objects and others are accomplished in accordance with the present invention generally speaking, by providing a steam decurling system wherein a paper web9 or the like, is driven through a steam shower environment for purposes of increasing the moisture content of the web material. The steam showers are emitted from a source7 such as a steam pipe, from beneath the surface of the web material. Positioned above the web and spaced therefrom is at least one air source assembly so designed to effectively control and regulate the distance of the web-to-steam shower source under variable operating conditions without contacting the web material. By carefully con-trolling the distance between the web material and the source of the steam7 the deposit of the steam on the web surface is more uniform and the resulting decurling effect more dynamic. It is preferred that the air foils be positioned just prior to the outlet for the steam from the respective steam source. The above described method and configuration provide for a close regulation of those factors which have the most influential effect upon a decurling operation.
It has been determined in the course of the present invention that the factors found to most significant in controlling the curling effect related to paper technology and more specifically to the fabrication of coated paper webs, are the web-to-moisture source distance, web ~1 ~ ~ 7 Z ~ ~ 3 temperature, steam pressure, and exhaust leve~. By implementing the system of the present invention, the regulation of these factors has been effectively achieved.
The configuration of the present invention provides for reliable control of the distance between the web material and the source of the steam shower without contacting the web material which effectively elirninates the fluttering effect resulting from excessive steam pressures applied, producing a more uniform steam application and penetra-tion. The utili~ation of the air foil system has an additional cooling effect upon the web surface, thus causing more efficient steam condensation on the web. By confining the area about the steam shower, the billowing efEect produced by the steam, under pressure, is minimized thus eliminating the necessity of extreme exhaust COD-ditions.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is Eurther illustrated by way of the accompanying drawings wherein E'ig. 1 represents a con-ventional steam shower decurling con~iguration and Fig. 2 represents the steam shower decurling system of the present invention.
DETAILED DESCRIPTION
¦ Referring now to Fig. 1 there is seen a stearn shower ¦ decurling structure generally designated 1 consisting oE a Z86~
steam shower housing ~ and the source~ oE steam repre~ented herein as two,steam pipes 3 and 4 with related orifices 5 and 6. A web material 7 from feedroll 8 passes above the steam pipes 3 and 4 and is taken up on idle roll 9. Ex-haust cha~bers 10 are provided for re~loval of excess steam.
In the instant illustration decurl ing i5 regulated by steam pressure alone with a free-floating web. Under these conditions, the steam pressure applied adversely effects the resulting web-to-steam shower distance and leads to excessive steam billowing. In order to counter this effect? high level exhausting is implemented which leads to excessive removal of sLeam by the exhaust system therefore requiring a step up in steam usage.
In Fig. 2 is seen the steam decurling unit of the present invention generally designated 20 comprising the steam showe~ housing 21 containing the steam sources, herein represented as steam pipes 22 and 23. The steam showers are emitted from the steam pipe orifices 24 and 25, respectively. The web sheet 26 Erom feed roll 27 is introduced above the steam pipes 22 and 23 to take up roll 28. Position~d above the web ~aterial are two air ~oil assealbly units generally designated 31 and 32. Each air foil asse~bly comprises air foil housing~ 33 and 34 and infeed ducts 35 and 36 attached to some remote air blower (not shown). Exhaust units 29 are provided for the contro'lled venting of the steam during the steam shower process. When the moisture is uniformly applied to a coated web or paper sheet, the web is ~ed in a manner such that the moisture is applied to the side opposite to which the coating was last applied.
1!
~ I ~l~72~63 Each foil is positioned or offset just prior to the steam pipe orifices 24 and 25 such that the leading edges of the air foil units 33 and 34 are located approximately 1/2" to 3/4" prior to the orifice or center line of the representative steam pipe 22 and 23. The foil pressure is maintained such that the web material 26 floats uniformly between the foil units 33 and 34 and the sources of the steam showers 22 and 23 so that the distance between the steam pipe orifices and the web material is maintained substantially constant. For optimum results, it is pre-ferred that this distance between the web and steam shower orifice be about 1/2 the distance (d) between the air foil and the steam shower source. The offset of the air foils from the steam pipe orifices avoids potential damage to the web surface due to high steam pressures while providing a cushioning effect on the web in the area immediately above the steam pipe orifices. The utilization of the air foil maintains the web-to-steam source distance constant without contacting the surface of the web material. This is especially significant when the upper surface oE the web material has a coating thereon. Elimination of unnecessary contact reduces the possibility of imparting surEace impairment to the web.
-The utilization of the air foils of the present invention to maintain a fixed steam pipe-to-web distance insures that the deposition of steam on the web surface is more uniform thus resulting in a more satisfactory decurling process. Furthermore, the presence of the air ~1~7Z~;3 foil stabilizes the web in the vicinity immmediaLely above the steam pipe orifices while preventing web contact with either the foil surface or the steam pipes, with the air film promoting temperature reduction enabling adequate and sufficient steam condensation at the web surface. rhe preferred air foils pressure~range is from about 7 to 9 inches of water. Steam pressure is generally regulated at about 5 lbs. with it being preferred that the steam pressure not exceed 30 lbs. Furthermore, with the increase oE the speed of the web material it has generally been found necessary to increase the steam pressure in order to penetrate the air ~ilm barrier along the web surface. In the case of the present invention, the increase in the web speed does not necessarily require an increase in steam pressure in order to achieve the desired surface exposure to the moisture.
Although in the present illustration the con~iguration nas been represented as containing two stearn sources adjacent the two air foil units, this is ~or purposes of describin~ the system oE the present invention and is not intended to be a limiting ~actor thereo~.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope o~ the invention, and all such modi~ications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
I
I
.
SUMMARY OF THE TNVENTION
.. ... . ...._ It is, therefore, an object of the present invention to provide a steam decurling system ~or a web material, such as a coated paper stock, which will overcome the above noted disadvantages.
It is a further object of the present invention to provide a steam decurling configuration which stabilizes ¦ the web material in the vicinity of the site of steam I emission.
I
11 i';~863 It is another object of the present invention to provide a steam decurling apparatus and process which effectively regulates the distance of the web material to the steam shower under variable operating conditions.
Sti~, a further object of the present invention is to provide a system whereby the web to shower distance is maintained relatively constant without contact with the web material.
Another object of the present invention is to provide a steam decurling system which eliminates fluttering of the treated web material to produce a more uniform steam application and penetration.
It is still another object of the present invention to effectively cool the web so as to realixe more eficient steam condensation.
Yet, still a further object oE the pre.sent invention is to provide a decurling configuration wherein the area about tha steam shower is confined so as to closely control the billowing effect produced by the steam with minimal exhaust.
Yet, another object of the present invention is to provide an effective decurling operation while substan-tially reducing the amount of normal steam pressure required during the process.
~ Z~;3 The foregoing objects and others are accomplished in accordance with the present invention generally speaking, by providing a steam decurling system wherein a paper web9 or the like, is driven through a steam shower environment for purposes of increasing the moisture content of the web material. The steam showers are emitted from a source7 such as a steam pipe, from beneath the surface of the web material. Positioned above the web and spaced therefrom is at least one air source assembly so designed to effectively control and regulate the distance of the web-to-steam shower source under variable operating conditions without contacting the web material. By carefully con-trolling the distance between the web material and the source of the steam7 the deposit of the steam on the web surface is more uniform and the resulting decurling effect more dynamic. It is preferred that the air foils be positioned just prior to the outlet for the steam from the respective steam source. The above described method and configuration provide for a close regulation of those factors which have the most influential effect upon a decurling operation.
It has been determined in the course of the present invention that the factors found to most significant in controlling the curling effect related to paper technology and more specifically to the fabrication of coated paper webs, are the web-to-moisture source distance, web ~1 ~ ~ 7 Z ~ ~ 3 temperature, steam pressure, and exhaust leve~. By implementing the system of the present invention, the regulation of these factors has been effectively achieved.
The configuration of the present invention provides for reliable control of the distance between the web material and the source of the steam shower without contacting the web material which effectively elirninates the fluttering effect resulting from excessive steam pressures applied, producing a more uniform steam application and penetra-tion. The utili~ation of the air foil system has an additional cooling effect upon the web surface, thus causing more efficient steam condensation on the web. By confining the area about the steam shower, the billowing efEect produced by the steam, under pressure, is minimized thus eliminating the necessity of extreme exhaust COD-ditions.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is Eurther illustrated by way of the accompanying drawings wherein E'ig. 1 represents a con-ventional steam shower decurling con~iguration and Fig. 2 represents the steam shower decurling system of the present invention.
DETAILED DESCRIPTION
¦ Referring now to Fig. 1 there is seen a stearn shower ¦ decurling structure generally designated 1 consisting oE a Z86~
steam shower housing ~ and the source~ oE steam repre~ented herein as two,steam pipes 3 and 4 with related orifices 5 and 6. A web material 7 from feedroll 8 passes above the steam pipes 3 and 4 and is taken up on idle roll 9. Ex-haust cha~bers 10 are provided for re~loval of excess steam.
In the instant illustration decurl ing i5 regulated by steam pressure alone with a free-floating web. Under these conditions, the steam pressure applied adversely effects the resulting web-to-steam shower distance and leads to excessive steam billowing. In order to counter this effect? high level exhausting is implemented which leads to excessive removal of sLeam by the exhaust system therefore requiring a step up in steam usage.
In Fig. 2 is seen the steam decurling unit of the present invention generally designated 20 comprising the steam showe~ housing 21 containing the steam sources, herein represented as steam pipes 22 and 23. The steam showers are emitted from the steam pipe orifices 24 and 25, respectively. The web sheet 26 Erom feed roll 27 is introduced above the steam pipes 22 and 23 to take up roll 28. Position~d above the web ~aterial are two air ~oil assealbly units generally designated 31 and 32. Each air foil asse~bly comprises air foil housing~ 33 and 34 and infeed ducts 35 and 36 attached to some remote air blower (not shown). Exhaust units 29 are provided for the contro'lled venting of the steam during the steam shower process. When the moisture is uniformly applied to a coated web or paper sheet, the web is ~ed in a manner such that the moisture is applied to the side opposite to which the coating was last applied.
1!
~ I ~l~72~63 Each foil is positioned or offset just prior to the steam pipe orifices 24 and 25 such that the leading edges of the air foil units 33 and 34 are located approximately 1/2" to 3/4" prior to the orifice or center line of the representative steam pipe 22 and 23. The foil pressure is maintained such that the web material 26 floats uniformly between the foil units 33 and 34 and the sources of the steam showers 22 and 23 so that the distance between the steam pipe orifices and the web material is maintained substantially constant. For optimum results, it is pre-ferred that this distance between the web and steam shower orifice be about 1/2 the distance (d) between the air foil and the steam shower source. The offset of the air foils from the steam pipe orifices avoids potential damage to the web surface due to high steam pressures while providing a cushioning effect on the web in the area immediately above the steam pipe orifices. The utilization of the air foil maintains the web-to-steam source distance constant without contacting the surface of the web material. This is especially significant when the upper surface oE the web material has a coating thereon. Elimination of unnecessary contact reduces the possibility of imparting surEace impairment to the web.
-The utilization of the air foils of the present invention to maintain a fixed steam pipe-to-web distance insures that the deposition of steam on the web surface is more uniform thus resulting in a more satisfactory decurling process. Furthermore, the presence of the air ~1~7Z~;3 foil stabilizes the web in the vicinity immmediaLely above the steam pipe orifices while preventing web contact with either the foil surface or the steam pipes, with the air film promoting temperature reduction enabling adequate and sufficient steam condensation at the web surface. rhe preferred air foils pressure~range is from about 7 to 9 inches of water. Steam pressure is generally regulated at about 5 lbs. with it being preferred that the steam pressure not exceed 30 lbs. Furthermore, with the increase oE the speed of the web material it has generally been found necessary to increase the steam pressure in order to penetrate the air ~ilm barrier along the web surface. In the case of the present invention, the increase in the web speed does not necessarily require an increase in steam pressure in order to achieve the desired surface exposure to the moisture.
Although in the present illustration the con~iguration nas been represented as containing two stearn sources adjacent the two air foil units, this is ~or purposes of describin~ the system oE the present invention and is not intended to be a limiting ~actor thereo~.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope o~ the invention, and all such modi~ications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
I
I
.
Claims (10)
1. A steam decurling apparatus comprising means for introducing a web material to a steam environment, means for providing steam showers to at least one surface of said web material, and means provided on the side opposite said steam shower means which serves to stabilize said web material in the vicinity of said steam showers so as to maintain a substantially constant distance between the surface of said web material and said steam shower means without contacting said web.
2. The apparatus of claim 1 wherein said steam shower means comprises at least one steam pipe having a steam emitting orifice located at the center line thereof beneath said web material which directs steam showers onto the surface of said web material.
3. The apparatus of claim 2 wherein said web stabilizing means comprises at least one air source positioned above each of said steam shower means.
4. The apparatus of claim 3 wherein said air source establishes a uniform air film above the upper surface of said web, said air source being positioned at a site just prior to the respective underlying steam pipe orifice.
5. The apparatus of claim 4 wherein said air source comprises at least one air foil positioned above corres-ponding steam pipes such that the air foil pressure maintains the web material in a suspended state between each of said air foils and said steam pipes.
6. A process of uniformly applying moisture to the surface of a web material which comprises introducing said web material into a zone above at least one steam source, subjecting the undersurface of said web material to a steam shower while substantially simultaneously therewith directing air under pressure from a corresponding air supply means against the opposite surface of said web material so as to effectively maintain the distance between said web material and said source of steam showers substantially constant while at the same time maintaining said web material free from contact with either of said steam source and said air supply means.
7. The process of claim 6 wherein said web material comprises a coated paper sheet.
8. The process of claim 6 wherein there is provided an air supply means corresponding to and positioned above each of said steam sources, said air supply means being located at a site just prior to the localized source of said steam shower so as to provide a web material which floats uniformly between said air foil and steam shower which produces a cushioning effect on said web material.
9. The process of claim 8 wherein said steam showers are provided by at least one steam pipe positioned beneath said web material having steam emitting orifices located at the center line of said pipe.
10. The process of claim 8 wherein said air supply means comprises air foils, the leading edge thereof being positioned prior to the orifice of each of said steam sources.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25794681A | 1981-04-27 | 1981-04-27 | |
| US257,946 | 1981-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1172863A true CA1172863A (en) | 1984-08-21 |
Family
ID=22978462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000398833A Expired CA1172863A (en) | 1981-04-27 | 1982-03-19 | Apparatus and process for a decurling system |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0063890B1 (en) |
| JP (1) | JPS57184053A (en) |
| AT (1) | ATE48119T1 (en) |
| AU (1) | AU8262482A (en) |
| BR (1) | BR8202319A (en) |
| CA (1) | CA1172863A (en) |
| DE (1) | DE3280031D1 (en) |
| DK (1) | DK185382A (en) |
| ES (1) | ES8400678A1 (en) |
| FI (1) | FI821430L (en) |
| GR (1) | GR75420B (en) |
| NO (1) | NO821358L (en) |
| ZA (1) | ZA822626B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2672063B1 (en) * | 1991-01-25 | 1993-06-04 | Champagne Teinturerie | DEVICE FOR DRIVING TEXTILE PRODUCTS IN A TEXTILE MACHINE. |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2627667A (en) * | 1946-10-07 | 1953-02-10 | Joseph R Gillis | Method and apparatus for drying inks |
| GB732558A (en) * | 1951-08-20 | 1955-06-29 | Joseph Monforts | Improvements in and relating to driers operating in conjunction with printing machines |
| US2797074A (en) * | 1955-04-28 | 1957-06-25 | John H Flynn | Operating controls for print-drying apparatus |
| CH344813A (en) * | 1956-08-07 | 1960-02-29 | Alpura Ag | Device for moistening a moving flexible material web |
| GB933636A (en) * | 1960-03-10 | 1963-08-08 | Hall & Kay Ltd | Improvements in or relating to apparatus for treating or conditioning webs or sheetsof paper, cloth, plastics or a like material |
| SE309904B (en) * | 1965-11-23 | 1969-04-08 | Svenska Flaektfabriken Ab | |
| GB1156056A (en) * | 1967-05-03 | 1969-06-25 | Greenbank Engineering Company | Method and Apparatus for Adding Moisture to a Pre-Conditioned Web of Paper. |
| US3453742A (en) * | 1967-09-26 | 1969-07-08 | Nat Distillers Chem Corp | Apparatus for drying printing ink on plastic film |
| ES368019A1 (en) * | 1968-05-28 | 1971-05-01 | Fuji Photo Film Co Ltd | Web moistening device |
| IT951025B (en) * | 1971-04-28 | 1973-06-30 | Monforts Fa A | PLANT FOR THE DRIVING AND TRANSPORT IN THE FLOATING STATE OF MATTER EXTENDED IN WIDTH |
| SE393826B (en) * | 1974-05-29 | 1977-05-23 | Svenska Flaektfabriken Ab | ARRANGEMENTS THAT WHEN TRANSPORTING A BAN OR SHEET OF AIR-SUPPORTED MATERIAL, IN FRONT OF THE MATERIAL IN A FIXED STABLE FLOATING THROUGH ONE OR SEVERAL FLOORS OF A TREATMENT PLANT, ONE ... |
| US4176162A (en) * | 1977-07-11 | 1979-11-27 | Bobst-Champlain, Inc. | Method and apparatus for conservation of energy in a thermal oxidation system for use with a printing press |
| US4201323A (en) * | 1978-10-12 | 1980-05-06 | W. R. Grace & Co. | High velocity web floating air bar having a recessed Coanda plate |
-
1982
- 1982-03-19 CA CA000398833A patent/CA1172863A/en not_active Expired
- 1982-04-08 EP EP82301876A patent/EP0063890B1/en not_active Expired
- 1982-04-08 AT AT82301876T patent/ATE48119T1/en not_active IP Right Cessation
- 1982-04-08 DE DE8282301876T patent/DE3280031D1/en not_active Expired
- 1982-04-15 AU AU82624/82A patent/AU8262482A/en not_active Abandoned
- 1982-04-16 ZA ZA822626A patent/ZA822626B/en unknown
- 1982-04-22 BR BR8202319A patent/BR8202319A/en unknown
- 1982-04-23 FI FI821430A patent/FI821430L/en not_active Application Discontinuation
- 1982-04-26 DK DK185382A patent/DK185382A/en not_active Application Discontinuation
- 1982-04-26 GR GR67981A patent/GR75420B/el unknown
- 1982-04-26 NO NO821358A patent/NO821358L/en unknown
- 1982-04-26 ES ES511697A patent/ES8400678A1/en not_active Expired
- 1982-04-27 JP JP57071118A patent/JPS57184053A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FI821430A0 (en) | 1982-04-23 |
| EP0063890B1 (en) | 1989-11-23 |
| DK185382A (en) | 1982-10-28 |
| ATE48119T1 (en) | 1989-12-15 |
| ZA822626B (en) | 1983-03-30 |
| ES511697A0 (en) | 1983-11-01 |
| NO821358L (en) | 1982-10-28 |
| JPH0329707B2 (en) | 1991-04-25 |
| DE3280031D1 (en) | 1989-12-28 |
| BR8202319A (en) | 1983-04-05 |
| ES8400678A1 (en) | 1983-11-01 |
| AU8262482A (en) | 1982-11-04 |
| FI821430L (en) | 1982-10-28 |
| EP0063890A3 (en) | 1982-12-22 |
| EP0063890A2 (en) | 1982-11-03 |
| GR75420B (en) | 1984-07-16 |
| JPS57184053A (en) | 1982-11-12 |
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