GB2103115A - Coating a paper web - Google Patents
Coating a paper web Download PDFInfo
- Publication number
- GB2103115A GB2103115A GB08219643A GB8219643A GB2103115A GB 2103115 A GB2103115 A GB 2103115A GB 08219643 A GB08219643 A GB 08219643A GB 8219643 A GB8219643 A GB 8219643A GB 2103115 A GB2103115 A GB 2103115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roll
- web
- coating
- nip
- liquid solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 title claims description 32
- 238000000576 coating method Methods 0.000 title claims description 32
- 229920002472 Starch Polymers 0.000 claims abstract description 65
- 235000019698 starch Nutrition 0.000 claims abstract description 65
- 239000008107 starch Substances 0.000 claims abstract description 62
- 239000006193 liquid solution Substances 0.000 claims description 17
- 230000035515 penetration Effects 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000011282 treatment Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
- D21H23/58—Details thereof, e.g. surface characteristics, peripheral speed
- D21H23/60—Details thereof, e.g. surface characteristics, peripheral speed the material on the applicator roll being subjected to a particular treatment before applying to the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
- D21H5/0025—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material
- D21H5/003—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material with a roller
- D21H5/0032—Details thereof, e.g. surface characteristics, peripheral speed
- D21H5/0035—Details thereof, e.g. surface characteristics, peripheral speed the coating material on the applicator roller being subjected to a particular treatment before applying to paper
Landscapes
- Coating Apparatus (AREA)
- Paper (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Paper webs travelling at up to 5000 ft/min are coated with starch solution by passage through nip 33 of press rolls 31, 32. Starch is applied in excess to the rolls by rolls 45 or a fountain (Fig. 4), and metered by blades 38, 39. <IMAGE>
Description
SPECIFICATION
Apparatus and method for applying a coating to a paper sheet web
The invention relates to coating treatment for a continuous paper web and, more particularly, to a system for such treatment which avoids the formation of large coating ponds and is capable of handling coating having a low solids and viscosity content at high running speeds.
In paper manufacture, it is well known to apply starch solutions to a continuous paper web in order to provide adequate body strength for the resulting paper sheets. During this process, the paper is coated with the starch on both sides for a proper penetration into the web.
Starch treatment assemblies have conventionally called for maintenance of a starch pond or puddle in a nip between two rolls before application to the web. One conventional device is a two roll press wherein the web is passed between two smooth rolls supporting a starch pond in a receiving nip between the rolls. The web passes generally centrally through the pond such that both sides of the web are simultaneously penetrated by the starch. The problem which arises in this technique is that, during high speed paper flow in excess of 2000 feet per minute (610 metres per minute), turbulence is generated in the starch puddle which tends to throw coating away from the nip and result in uneven application.
There are no means in the two roll press to control turbulence in the starch pond and uneven coating can result in breaking of the sheet web.
Another system using a starch pond is a gate roll press which has a series of contiguous smooth rolls in relative rotation. Two relatively large centre applicator rolls define a nip through which a continuous sheet web passes. Leading to each large applicator roll is a pair of relatively smaller metering or gate rolls which define a nip away from the applicator roll supporting a starch pond.
From the pond, starch film is carried along the rolls and applied to both sides of the web as it passes through the nip between the large rolls. A gate roll press will allow operating speeds up to 4,000 feet per minute (1220 metres per minute); however, it typically requires starch having higher viscosity levels to provide starch film strength through the gate roll nips. Due to the higher solids content required for viscosity, starch penetration in a gate roll press is minimal Optimum starch penetration requires low-solids and low-viscosity solutions.
High solids starches lead to high concentrations of starch on the outer surfaces of the web which may produce undesired web qualities such as sheet tackiness and bonding. Further, since starch penetration is limited, the internal bond strength of sheets treated in a gate roll press is generally not improved as are sheets treated in a two roll press.
The present invention is directed to a film applicator system which eliminates the need for starch pond formation and is able to apply penetrant starch treatment of webs at high speeds.
According to the invention there is provided apparatus for applying a coating to a paper sheet web in the form of a liquid solution for penetration into the web comprising: a two roll press defined by two rolls receiving the web therebetween, a nip between said rolls where the web enters for passage through said two roll press, coating applicator means for at least one roll for applying liquid solution onto said respective roll surface, and a doctor blade means cooperating with said at least one roll for metering the liquid solution on the respective roll surface into a generally uniform film to be passed to said nip for penetration into said web, whereby puddle formation is eliminated at said nip.
The invention also provides a method for high speed coating of a continuous paper web, comprising: passing said web at speeds over 1000 feet per minute (305 metres per minute) through a nip between two rolls, supplying coating onto the surface of at least one of said rolls, metering said coating on said respective roll surface into a generally uniform film slightly less than the maximum amount said web can absorb at said nip, and conducting said film and said respective roll surface into contact with said web at said nip.
The following is a detailed description of embodiments of the invention, reference being made to the accompanying drawings in which:
Figure 1 is a schematic side elevational view illustrating a known two roll press arrangement wherein a paper web is passed through a starch pond,
Figure 2 is a schematic side elevational view of a known gate roll press arrangement in which a starch pond held by gate rolls passes as film onto two press rolls for application on the surface of a paper web passing between the press rolls,
Figure 3 is a schematic side elevational view of a film applicator system according to the present invention, where applicator roll means are used to deposit starch onto press rolls for metering,
Figure 4 is a diagrammatic side elevational view of another embodiment of a film applicator system according to the present invention, using fountain means for depositing starch onto the press rolls for metering,
Figure 5 is a fragmentary, schematic side elevational view illustrating the blade tip surface alignment with a respective press roll for use with the embodiment of Figures 3 and 4,
Figure 6 is a fragmentary, schematic side elevational view of another embodiment of a film applicator system according to the present invention where an elastically deformable blade is used for metering, and
Figure 7 is a fragmentary, schematic side elevational view illustrating desirable blade tip alignment with a respective press roll for use with the embodiment of Figure 6.
The invention is here described for use in the starch treatment of paper web; however, the inventive apparatus will have application generally to coating to paper sheets or sheet web.
Figure 1 illustrates a two roll size press
arrangement 10 for treating a continuous paper web 11 with starch from a large starch pond 1 2 in a manner known in the art. The pond 12 is supported in the nip between two rolls 1 3 and 14 through which the web is passed. This arrangement has been found to have limitations at web speeds in excess of about 2000 feet per minute (610 metres per minute) due to the creation of pond turbulence. The turbulence tends to throw starch coating away from the nip and can result in breaking of the sheet web. Turbulence is reduced by using lower starch viscosities, but
higher water evaporation is then required in the
web drying process.Additionally, amounts of
lower viscosity starch onto a web cannot be
effectively controlled by nip pressure and the
amounts of coating on a web tend to increase with
machine speed. Therefore, the approach to
controlling the amount of starch coating on a web
in a two roll size press has been to use a low solids
content (4-6 percent) starch pond solution.
In Figure 2, a conventional gate roll press
system 20 for starch treatment is shown. The
paper web 11 passes between two press rolls 21
and 22, each of which has been coated with
starch by means of a gate roll arrangement. Both
gate roll arrangements are identical such that only
one need be described. Two adjacent gate or
metering rolls 23 and 24 support a starch pond 25
in their nip. The metering rolls and press rolls are in contiguous series relation for the passage of starch therebetween and rotate relative to one another. In order to apply a starch coating to the intermediate gate roll 23 for passage onto the press roll 22, the outer gate roll 24 rotates at approximately 40 percent of sheet web speed, while the middle roll 23 rotates at approximately
60 percent sheet speed.The starch film formed on
the press roll 22 passes to a nip 26 formed
between the press rolls, where starch deposits on one surface of the paper web. The gate roll press
arrangement enables starch treatment at paper web speeds up to 4,000 feet per minute (1220
metres per minute); however, surface coating only
results due to the high viscosity starch solutions commonly used in gate roll presses. It is difficult to support the starch pond in the gate rolls when the viscosity becomes too low; so conventional gate roll press starch solutions have generally not had less than 10 percent solids content. Insufficient starch penetration causes the thus produced sheets to be of lower internal bond strength than sheets produced with a two roll size press.
In accordance with the present invention, a two roll press is provided in which a continuous paper web 11 (Figures 3 and 4) passes between two smooth applicator or press rolls 31 and 32 which form a nip 33 at the point of entry of the web therebetween. Adjacent to each roll is a respective doctor blade assembly 34 and 35 having blade holder housings 36 and 37 for adjustably containing blade elements 38 and 39 extending obliquely toward the outer surfaces of the rolls.
The doctor blade assemblies 34 and 35 utilise straight, bevelled blades 38, 39 (Figure 5) which
are pivotably adjustable to necessary angles
relative to the applicator rolls to meter a film thickness F over the rolls downstream of the blades 38 and 39. The blades 38 and 39 may be of metal such as steel. However, the blades should
be made of a material, such as Teflon, which is softer than the corresponding applicator rolls 31 and 32, which are preferably made of, or covered by, hard rubber (0--50 P and J). The relatively softer blades minimise wear on the rolls. Although the blades will wear more quickly, their replacement is simple and easy.
The straight blades 38 and 39 (Figures 3 and 4) are preferably adjusted by flexible bladder means 40 and 41 which expand and contract under air pressure for selective positioning of the doctor blades. Such air tube loaded doctor blades are generally known in the art. Some typical examples are set forth in U.S. Patent Specifications Nos.
3,529,315 and 3,778,861.
Each press roll 31 and 32 is coated with a starch solution from a corresponding starch applicator means 42 and 43 upstream of the film metering blades. The starch deposited on each press roll is approximately 10 to 40 times the volume of starch film being passed to the web entry nip 33 by the metered film. A build-up or pool of solution accordingly develops upstream of the blade tips. Preferably, the treatment film thickness F on each applicator roll is set so as to be slightly less than the maximum amount that can be absorbed by that respective side of the web 11. Thus, there is substantially no starch puddle formation at the nip 33. Since no starch pond is required in the inventive arrangement, the web 11 may pass upwardly or downwardly between the rolls 31 and 32.
In Figure 3, the starch applicator means is in the form of an applicator roll arrangement, wherein applicator rolls 44 and 45 extend between the corresponding large press rolls 31 and 32 and a supply of starch solution S contained in respective basins 46 and 47. The applicator rolls serve to coat the outer surfaces of the large rolls 31 and 32 with the supply of starch.
Alternatively, as illustrated in Figure 4, a supply of starch is deposited on the respective large press rolls 31 and 32 by means of fountains which deliver liquid solution under pressure through delivery nozzle means 48 and 49. Starch solution is pumped into a respective fountain delivery line through conduit means by a pump P, such as a variable speed positive displacement pump. The pump delivers starch solution from reservoirs or tanks 51 and 52, respectively, which hold a solution supply.
Alternatively to the straight blade arrangements shown in the embodiments of Figures 3 to 5, the inventive film applicator system may utilise an elastically deformable doctor blade device 50, as shown in Figure 6, to meter the film F to the nip 33. Such a deformable metering blade system is described in British Patent Specification No.
1,424,1 50. For purposes of illustration, an applicator roll 45 mechanism as discussed above serves to coat the respective press roll 32, although a fountain means could be used instead.
The film metering criterion remains the same as above.
The elastically deformable blade device 50 is disposed downstream of the applicator roll 45.
This device comprises a blade holder frame 51 for supporting a deformable, steel doctor blade 52.
One end of the blade 52 is fixably embedded in a lower end 53 of the frame. The other end of the blade extends freely outward of the frame. The frame 51 is pivotable about a pivot shaft 54 by suitable operating means, such as indicated by an hydraulic cylinder 55 which extends a link pin 56 connected to the lower end of the frame 53.
The blade 52 is initially disposed in an undeformed, straight-line fashion as shown in the rightmost chain line position of the frame 51 in
Figure 6. Outward extension of the link 56 pivots the holder frame 51 into working positions. The blade's free end rests at the point P and the blade 52 is concavely arced or bent by the intermediate engagement therealong with a platform vertex 58.
It is desirable to set the blade 52 and holder frame pivot shaft 54 so that the blade tip surface 57 faces the press roll 32 substantially tangentially at point P as shown in Figure 7. Such positioning ensures that the meteredf(lm is uniform and accurate despite changes in the blade bending load as indicated by the blade movements between the chain and solid line positions in
Figure 6.
Smoothness and uniformity of the film F is maintained by keeping the flat blade tip surface 57 in tangential engagement with the press roll 32. The thickness of the film F is controlled by adjustment of the blade load or degree of blade deformation produced by the pivotal rotation of the holder frame 51.
Proper starch penetration is necessary to improve internal sheet strength. A major factor in controlling starch penetration is the solids level and viscosity of the starch. Both low solids and low viscosity are required to get optimum starch penetration into a web. In the conventional puddle arrangements, the starches typically have low solids contents (i.e., about 6%) with high viscosity.
The precise metering of the present invention system enables low solids (less than 10% and preferably about 5%) -- low viscosity starches to be used in the treatment of a sheet web running at speeds ranging from approximately 1000 to 5000 feet per minute (305 to 1 525 metres per minute).
The above disclosed embodiments depict systems which preferably treat both sides of a web simultaneously but staggered surface treatments are also within the scope of the present invention.
Claims (19)
1. Apparatus for applying a coating to a paper sheet web in the form of a liquid solution for penetration into the web comprising: a two roll press defined by two rolls receiving the web therebetween, a nip between said rolls where the web enters for passage through said two roll press, coating applicator means for at least one roll for applying liquid solution onto said respective roll surface, and a doctor blade means cooperating with said at least one roll for metering the liquid solution on the respective roll surface into a generally uniform.film to be passed to said nip for penetration into said web, whereby puddle formation is eliminated at said nip.
2. Apparatus according to claim 1, wherein said coating applicator means comprises an elastic member for metering the liquid solution onto at least one roll of said two roll press, said two roll press transporting said web at speeds between 1000 and 5000 feet per minute (305 to 1525 metres per minute).
3. Apparatus according to claim 1 or claim 2, wherein the coating applicator means include a portion to apply to said roll surface 10 to 40 times the volume of the liquid solution film being passed to said nip by said respective roll.
4. Apparatus according to any of claims 1 to 3, wherein said coating applicator means comprise a respective fountion for said respective roll, said fountain having a delivery line and a pump for passing a flow of liquid solution under pressure through said delivery line.
5. Apparatus according to any of claims 1 to 3, wherein said coating applicator means comprise an applicator roll arrangement for said respective roll, said applicator roll arrangement comprising an applicator roll between its respective roll and a basin of liquid solution whereby said applicator roll picks up solution from said basin and deposits it onto the surface of said respective roll.
6. Apparatus according to any of claims 1 to 5, wherein said doctor blade means comprise adjustable blade mounting means and a straight blade made of material softer than the outer surface material of said respective roll.
7. Apparatus according to claim 6, wherein said blade mounting means include air pressure tube means for relative adjustment of the pressure between said blade and said respective roll surface.
8. Apparatus according to any of claims 1 to 7, wherein said doctor blade means comprise an elastically deformable blade, one end of which abuts against said respective roll surface and the other end of which is fixed in a blade holder frame, means for pivoting said frame about an axis, and a surface portion on said frame for concavely bending said blade according to the amount of pivotal movement of said frame to adjust thickness for said liquid solution film.
9. Apparatus according to claim 8, wherein said blade has a flat tip surface that is always substantially tangential with said respective roll surface for metering said liquid solution film.
10. Apparatus according to claim 6, wherein said straight blade has a bevelled tip surface which is always substantially tangential with said respective roll surface for metering said liquid solution film.
11. Apparatus according to any of claims 1 to 10, wherein the liquid solution is a starch solution having a solids content of less than 10%.
12. Apparatus according to any of claims 1 to 11, further comprising means for passing said web through said two press rolls at speeds between 1000 and 5000 feet per minute (305 to 1525 metres per minute).
13. Apparatus according to any of claims 1 to 12, further comprising another coating applicator means and another doctor blade means associated with the other roll, whereby liquid solution film contacts said web on both sides at said nip.
14. Apparatus according to any of claims 1 to 13, wherein said doctor blade means meter said liquid solution film to slightly less than the maximum amount said web can absorb at said nip.
1 5. Apparatus according to any of claims 1 to 1 5, further comprising means for passing said web through said two roll press at speeds over 3,000 feet per minute (913 metres per minute).
1 6. A method for high speed coating of a continuous paper web, comprising: passing said web at speeds over 1000 feet per minute (305 metres per minute) through a nip between two rolls, supplying coating onto the surface of at least one of said rolls, metering said coating on said respective roll surface into a generally uniform film slightly less than the maximum amount said web can absorb at said nip, and conducting said film and said respective roll surface into contact with said web at said nip.
1 7. A method according to claim 16, further comprising: supplying said coating on said respective roll surface at 10 to 40 times the volume of said coating transmitted to said nip.
1 8. Apparatus for applying a coating to a paper sheet web substantially as hereinbefore described with reference to any of Figures 3 to 7 of the accompanying drawings.
19. A method of applying a coating to a paper sheet web according to claim 1 6 and substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29047981A | 1981-08-06 | 1981-08-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2103115A true GB2103115A (en) | 1983-02-16 |
| GB2103115B GB2103115B (en) | 1984-12-12 |
Family
ID=23116187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08219643A Expired GB2103115B (en) | 1981-08-06 | 1982-07-07 | Coating a paper web |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5830365A (en) |
| KR (1) | KR860001633B1 (en) |
| CA (1) | CA1196181A (en) |
| ES (1) | ES8307538A1 (en) |
| GB (1) | GB2103115B (en) |
| IN (1) | IN159200B (en) |
| IT (1) | IT1152329B (en) |
| MX (1) | MX158731A (en) |
| PH (2) | PH23200A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60251959A (en) * | 1984-05-11 | 1985-12-12 | ジエー、エム、フオイト、ゲゼルシヤフト、ミツト ベシユレンクテル、ハフツング | Apparatus for applying liquid onto advance web |
| US5159893A (en) * | 1989-10-09 | 1992-11-03 | Valmet Paper Machinery Inc. | Method and apparatus for regulation of the moisture profile of a paper or board web in a film size press |
| DE4340039A1 (en) * | 1993-11-24 | 1994-04-07 | Voith Gmbh J M | Web coating appts. - has applicator belts passing in a closed loop through press gap between rollers with the web and structured blanket deflection rollers for high speed |
| WO1995008026A1 (en) * | 1993-09-14 | 1995-03-23 | J. M. Voith Gmbh | Process and device for coating a travelling material web |
| CN103243610A (en) * | 2013-04-12 | 2013-08-14 | 杭州维美机械有限公司 | Paper web gluing process based on membrane transfer |
| EP2706143B1 (en) | 2011-12-02 | 2016-09-28 | Mudanjiang Hengfeng Paper Co., Ltd | Manufacturing device and preparation method for cigarette paper having flame-retarding stripes |
| CN115025940A (en) * | 2022-06-10 | 2022-09-09 | 北京工商大学 | 3D prints modified equipment on stainless steel profiled surface |
| EP3830336B1 (en) | 2018-07-27 | 2023-02-22 | Voith Patent GmbH | Method and device for starch application |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60215764A (en) * | 1984-04-09 | 1985-10-29 | Nippon Steel Corp | Formation of film |
| DE3440634C2 (en) * | 1984-11-07 | 1986-09-11 | J.M. Voith Gmbh, 7920 Heidenheim | Device for double-sided coating of moving webs |
| US7669547B2 (en) | 2001-03-14 | 2010-03-02 | 3M Innovative Properties Company | Coating apparatus |
-
1982
- 1982-05-28 CA CA000404018A patent/CA1196181A/en not_active Expired
- 1982-06-22 PH PH27470A patent/PH23200A/en unknown
- 1982-07-07 GB GB08219643A patent/GB2103115B/en not_active Expired
- 1982-07-23 ES ES514269A patent/ES8307538A1/en not_active Expired
- 1982-08-02 JP JP57133818A patent/JPS5830365A/en active Pending
- 1982-08-02 IN IN902/CAL/82A patent/IN159200B/en unknown
- 1982-08-04 MX MX82193882A patent/MX158731A/en unknown
- 1982-08-05 IT IT22744/82A patent/IT1152329B/en active
- 1982-08-06 KR KR8203542A patent/KR860001633B1/en active
-
1986
- 1986-02-17 PH PH33424A patent/PH23768A/en unknown
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60251959A (en) * | 1984-05-11 | 1985-12-12 | ジエー、エム、フオイト、ゲゼルシヤフト、ミツト ベシユレンクテル、ハフツング | Apparatus for applying liquid onto advance web |
| US4848268A (en) * | 1984-05-11 | 1989-07-18 | J. M. Voith Gmbh | Apparatus and method for applying a liquid to a moving web |
| US5159893A (en) * | 1989-10-09 | 1992-11-03 | Valmet Paper Machinery Inc. | Method and apparatus for regulation of the moisture profile of a paper or board web in a film size press |
| US5304391A (en) * | 1989-10-09 | 1994-04-19 | Valmet Paper Machinery Inc. | Method for regulation of the moisture profile of a paper or board web in a film size press |
| WO1995008026A1 (en) * | 1993-09-14 | 1995-03-23 | J. M. Voith Gmbh | Process and device for coating a travelling material web |
| US6203858B1 (en) | 1993-09-14 | 2001-03-20 | Voith Sulzer Papiermaschinen Gmbh | Method and system for coating a web |
| DE4340039A1 (en) * | 1993-11-24 | 1994-04-07 | Voith Gmbh J M | Web coating appts. - has applicator belts passing in a closed loop through press gap between rollers with the web and structured blanket deflection rollers for high speed |
| US5578125A (en) * | 1993-11-24 | 1996-11-26 | Voith Sulzer Papiermaschinen Gmbh | Coating system for running webs of paper or cardboard |
| EP2706143B1 (en) | 2011-12-02 | 2016-09-28 | Mudanjiang Hengfeng Paper Co., Ltd | Manufacturing device and preparation method for cigarette paper having flame-retarding stripes |
| CN103243610A (en) * | 2013-04-12 | 2013-08-14 | 杭州维美机械有限公司 | Paper web gluing process based on membrane transfer |
| EP3830336B1 (en) | 2018-07-27 | 2023-02-22 | Voith Patent GmbH | Method and device for starch application |
| CN115025940A (en) * | 2022-06-10 | 2022-09-09 | 北京工商大学 | 3D prints modified equipment on stainless steel profiled surface |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2103115B (en) | 1984-12-12 |
| IT8222744A0 (en) | 1982-08-05 |
| MX158731A (en) | 1989-03-08 |
| ES514269A0 (en) | 1983-08-01 |
| ES8307538A1 (en) | 1983-08-01 |
| CA1196181A (en) | 1985-11-05 |
| IN159200B (en) | 1987-04-11 |
| PH23768A (en) | 1989-11-03 |
| KR860001633B1 (en) | 1986-10-14 |
| KR840001291A (en) | 1984-04-30 |
| PH23200A (en) | 1989-06-06 |
| JPS5830365A (en) | 1983-02-22 |
| IT1152329B (en) | 1986-12-31 |
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| Date | Code | Title | Description |
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| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 20020706 |