CA2146770A1 - A method of manufacturing a cover for a press roll - Google Patents
A method of manufacturing a cover for a press rollInfo
- Publication number
- CA2146770A1 CA2146770A1 CA002146770A CA2146770A CA2146770A1 CA 2146770 A1 CA2146770 A1 CA 2146770A1 CA 002146770 A CA002146770 A CA 002146770A CA 2146770 A CA2146770 A CA 2146770A CA 2146770 A1 CA2146770 A1 CA 2146770A1
- Authority
- CA
- Canada
- Prior art keywords
- matrix
- cover
- manufacturing
- set forth
- filler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/08—Pressure rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/005—Roll constructions
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
Abstract
A method of manufacturing a cover for a press roll includes the steps of feeding epoxy matrix (10) into a container (12) and agitating the same. Filler material (16) is added to the matrix (10) while the matrix is being agitated. The matrix (10) and fill-er (16) are conveyed to an application zone (18). A roll (20) of reinforcing material (22) is unwound such that the unwound rein-forcing material (22) extends past the application zone (18), The agitated matrix (10) and filler (16) is applied to the unwound ma-terial (22) during passage of the material past the application zone (18). The reinforcing material (22) with the matrix (10) and filler (16) applied thereto are then spirally wound around the press roll (28) such that the press roll (28) is covered with the rein-forcing material (22) impregnated with the matrix (10) and filler (16). The arrangement is such that the surface characteristics of the resultant cover are dependent on the amount and type of filler material added to the matrix (10).
Description
~O 94/09208 2 1 ~ ~ 7 7 0 PCI/US93/08537 (1) PATENT APPLICATION
TITLE: A METHQD OF MANUFACTURING A COVER FOR A PRESS ROlL
Background of the Invention Field of the Invention The present invention relates to a method of manufacturing a cover for a press roll. More specifically, the present invention relates to a method of manufacturing a cover for a press roll which includes spirally winding reinforcing material around the press roll.
Information Disclosure Statement In the papermaking art, a formed web is guided through a press section for removing water from the web.
Steel press rolls have been covered with rubber or synthetic material in order to enhance the water removing capability of the press.
Often, it has been the practice to add filler particles to the rubber compounds prior to application of the rubber compound to the steel roll shell in order to change the hardness of the resultant cover.
Additionally, fillers have been added to urethane in order to increase the hardness of the cover.
However, more recently, it has been found advantageous to impregnate reinforcing material with a urethane material and to spirally wind the same onto a roll shell. However, such spiral winding of the WO 94/09208 . ', PCI /US93/0853-~
21~77~ (2) reinforcing material does not readily permit the addition thereto of the aforementioned filler particles.
The present invention overcomes the problem of adding filler to the spirally wound reinforcing material by applying the filler to an epoxy matrix prior to the application of the mixture to the reinforcing material.
Therefore, the present invention provides a method of manufacturing a cover for a press roll that overcomes the aforementioned inadequacies of the prior art arrangements and which makes a considerable contribution to the art of manufacturing a cover for a press roll.
Other objects and advantages of the present invention will be readily apparent to those skilled in the art by a consideration of the detailed description contained hereinafter, taken in conjunction with the annexed drawings .
Summary of the Invention The present invention relates to a method of manufacturing a cover for a press roll. The method includes the steps of feeding an epoxy matrix into a container and agitating the matrix. Filler material is added to the matrix while the matrix is being agitated, and the matrix and filler are then conveyed to an application zone. Reinforcing material is unwound from a roll such that the material extends past the application zone. The agitated matrix and filler are applied to the unwound material during passage of the material past the application zone. The reinforcing material, together with the matrix and filler, are then spirally wound around the press roll such that the press roll is covered with the reinforcing material impregnated with the matrix and filler. The arrangement is such that the surface characteristics 94/09208 ~ 1 41 6 7 7 ~ PCI`/US93/08537 (3) of the resultant cover are dependent on the amount and type of filler material added to the matrix.
In a more specific embodiment of the present invention, the epoxy matrix is a polymeric thermo-plastic matrix.
In another embodiment of the present invention, the matrix is a polymeric thermo-set matrix.
The filler material is composed of either mineral particles, synthetic particles or refractory particles.
The particles in one embodiment of the invention have a diameter less than one (1 ) millimeter, and in another embodiment of the present invention, the particles have a diameter of at least one (1 ) millimeter.
In another embodiment of the present invention, the filler material includes PTFE powder, together with glass fibers. In yet another embodirrlent of the present invention, the filler material includes PTFE
powder, together with ceramic fibers.
Additionally, in another embodiment of the present invention, the filler material includes PTFE powder, together with quartz fibers and feldspar particles.
The reinforcing material is either a woven material, a knitted material, a braided material or a non-woven material.
The step of spirally winding the reinforcing material is carried out during the cross-linking of the matrix.
TITLE: A METHQD OF MANUFACTURING A COVER FOR A PRESS ROlL
Background of the Invention Field of the Invention The present invention relates to a method of manufacturing a cover for a press roll. More specifically, the present invention relates to a method of manufacturing a cover for a press roll which includes spirally winding reinforcing material around the press roll.
Information Disclosure Statement In the papermaking art, a formed web is guided through a press section for removing water from the web.
Steel press rolls have been covered with rubber or synthetic material in order to enhance the water removing capability of the press.
Often, it has been the practice to add filler particles to the rubber compounds prior to application of the rubber compound to the steel roll shell in order to change the hardness of the resultant cover.
Additionally, fillers have been added to urethane in order to increase the hardness of the cover.
However, more recently, it has been found advantageous to impregnate reinforcing material with a urethane material and to spirally wind the same onto a roll shell. However, such spiral winding of the WO 94/09208 . ', PCI /US93/0853-~
21~77~ (2) reinforcing material does not readily permit the addition thereto of the aforementioned filler particles.
The present invention overcomes the problem of adding filler to the spirally wound reinforcing material by applying the filler to an epoxy matrix prior to the application of the mixture to the reinforcing material.
Therefore, the present invention provides a method of manufacturing a cover for a press roll that overcomes the aforementioned inadequacies of the prior art arrangements and which makes a considerable contribution to the art of manufacturing a cover for a press roll.
Other objects and advantages of the present invention will be readily apparent to those skilled in the art by a consideration of the detailed description contained hereinafter, taken in conjunction with the annexed drawings .
Summary of the Invention The present invention relates to a method of manufacturing a cover for a press roll. The method includes the steps of feeding an epoxy matrix into a container and agitating the matrix. Filler material is added to the matrix while the matrix is being agitated, and the matrix and filler are then conveyed to an application zone. Reinforcing material is unwound from a roll such that the material extends past the application zone. The agitated matrix and filler are applied to the unwound material during passage of the material past the application zone. The reinforcing material, together with the matrix and filler, are then spirally wound around the press roll such that the press roll is covered with the reinforcing material impregnated with the matrix and filler. The arrangement is such that the surface characteristics 94/09208 ~ 1 41 6 7 7 ~ PCI`/US93/08537 (3) of the resultant cover are dependent on the amount and type of filler material added to the matrix.
In a more specific embodiment of the present invention, the epoxy matrix is a polymeric thermo-plastic matrix.
In another embodiment of the present invention, the matrix is a polymeric thermo-set matrix.
The filler material is composed of either mineral particles, synthetic particles or refractory particles.
The particles in one embodiment of the invention have a diameter less than one (1 ) millimeter, and in another embodiment of the present invention, the particles have a diameter of at least one (1 ) millimeter.
In another embodiment of the present invention, the filler material includes PTFE powder, together with glass fibers. In yet another embodirrlent of the present invention, the filler material includes PTFE
powder, together with ceramic fibers.
Additionally, in another embodiment of the present invention, the filler material includes PTFE powder, together with quartz fibers and feldspar particles.
The reinforcing material is either a woven material, a knitted material, a braided material or a non-woven material.
The step of spirally winding the reinforcing material is carried out during the cross-linking of the matrix.
2 1 ~ ~ 7 70 . -- ---- ----.-- .
WO 94/09208 PCTiUS931~85 (41A) - !~
Many variations and modifications of the combination of method steps according to the present invention will be readily apparent to those - skilled in the art by a consideration of the detailed description contained hereinafter.
Brief Description of the Drawings Figure 1 is a schematic view representing the step of feeding the epoxy matrix into a container and agitating the same;
.
Figure 2 is a similar view to that shown in Figure 1, but shows filler niaterial being added to the matrix while the matrix is being agitated;
Figure 3 is a,similar view to that shown in Figure 2, but shows the agitated matrix and filler being conveyed to an application zone and being applied' to reinforcing material being unwound from a roll of 'reinforcing material; and Figure 4 is a perspective view showing a press roll being spirally wound with the reinforcing material and matrix and filler according to the present invention.
l)etailed Description of the'Drawings ,, Figure 1 is a schematic view illustrating a method of manufacturing a cover for a press roll shell according to the present invention. Figure 1 , AMENDED SHEEr ~VO 94/09208 2 1 4 S 7 7 0 PCI/US93/08~37 (5) shows an epoxy matrix 10 disposed within a container 12. The epoxy matrix 10 is being agitated by an agitator 14.
Figure 2 is a similar view to that shown in Figure 1, but shows filler material 16 being added to the matrix 10 while the matrix 10 is being agitated within the container 12.
Figure 3 is a similar view to that shown in Figure 2, but shows the agitated matrix 10 and filler 16 being conveyed and pumped via pump P to an application zone, generally designated 18.
A roll 20 of reinforcing material 22 is unwound, as indicated by the arrow 26, such that the reinforcing material 22 extends past the application zone 18.
The agilaled matrix and filler 10 and 16 are applied, as indicated by the arrow 26, ~o the unwound material 22 during passage of the unwound material 22 past the application zone 18.
Figure 4 is a perspective view of a press roll 28 and shows the roll 28 being spirally wound with the reinforcing material 22, the matrix 10 and filler 16 having been previously applied to the reinforcing material 22. The arrangement is such that the press roll 28 is covered with the reinforcing material 22, which is impregnated with the matrix 10 and filler 16. The surface characteristics of the resultant cover are consequently dependent on the amount and type of filler material 16 added to the matrix.
In specific embodiments of the present invention, the matrix 10 is either a polymeric thermo-plastic matrix or a polymeric thermo-set matrix.
W O 94/09208 PC~r/US93/0853 2 ~ ~ ~ 7 7 0 (6) The filler materiai 16 is either composed of mineral particles, synthetic particles or refractory particlës.
In one embodiment of the present invention, the filler material 16 includes particles having a diameter of less than one (1) millimeter, and in another embodiment of the present invention, the filler material 16 includes particles having a diameter of at least one (1 ) millimeter.
Additionally, the filler material 16 includes either PTFE powder together with glass fibers, PTFE powder together with ceramic fibers, or PTFE powder together with quartz fibers and feldspar particles.
The reinforcing material 22 is either a woven material, a knitted material, a braided material or a non-woven material.
The step of spirally winding the reinforcing material 22 is carried out during the cross-linking of the matrix.
The present invention provides a method of manufacturing a roll cover which exhibits the required durometer hardness for the particular type of paper being pressed.
Such hardness of the cover is not only a requirement according to the type of paper being manufactured, but also a requirement according to the type of coating that will be applied thereto for subsequent calendering.
Additionally, roll covers of varying durometer hardness will be required dependent upon the type of furnish being used.
~O 94/09208 2 1 ~ ~ 7 7 0 PCI'/US93/08537 (7) Although the present invention has been described with particular application to the provision of a cover for a press roll, it will be appreciatedby those skilled in the art that such roll covers will also be applicable in soft calendering and the like.
WO 94/09208 PCTiUS931~85 (41A) - !~
Many variations and modifications of the combination of method steps according to the present invention will be readily apparent to those - skilled in the art by a consideration of the detailed description contained hereinafter.
Brief Description of the Drawings Figure 1 is a schematic view representing the step of feeding the epoxy matrix into a container and agitating the same;
.
Figure 2 is a similar view to that shown in Figure 1, but shows filler niaterial being added to the matrix while the matrix is being agitated;
Figure 3 is a,similar view to that shown in Figure 2, but shows the agitated matrix and filler being conveyed to an application zone and being applied' to reinforcing material being unwound from a roll of 'reinforcing material; and Figure 4 is a perspective view showing a press roll being spirally wound with the reinforcing material and matrix and filler according to the present invention.
l)etailed Description of the'Drawings ,, Figure 1 is a schematic view illustrating a method of manufacturing a cover for a press roll shell according to the present invention. Figure 1 , AMENDED SHEEr ~VO 94/09208 2 1 4 S 7 7 0 PCI/US93/08~37 (5) shows an epoxy matrix 10 disposed within a container 12. The epoxy matrix 10 is being agitated by an agitator 14.
Figure 2 is a similar view to that shown in Figure 1, but shows filler material 16 being added to the matrix 10 while the matrix 10 is being agitated within the container 12.
Figure 3 is a similar view to that shown in Figure 2, but shows the agitated matrix 10 and filler 16 being conveyed and pumped via pump P to an application zone, generally designated 18.
A roll 20 of reinforcing material 22 is unwound, as indicated by the arrow 26, such that the reinforcing material 22 extends past the application zone 18.
The agilaled matrix and filler 10 and 16 are applied, as indicated by the arrow 26, ~o the unwound material 22 during passage of the unwound material 22 past the application zone 18.
Figure 4 is a perspective view of a press roll 28 and shows the roll 28 being spirally wound with the reinforcing material 22, the matrix 10 and filler 16 having been previously applied to the reinforcing material 22. The arrangement is such that the press roll 28 is covered with the reinforcing material 22, which is impregnated with the matrix 10 and filler 16. The surface characteristics of the resultant cover are consequently dependent on the amount and type of filler material 16 added to the matrix.
In specific embodiments of the present invention, the matrix 10 is either a polymeric thermo-plastic matrix or a polymeric thermo-set matrix.
W O 94/09208 PC~r/US93/0853 2 ~ ~ ~ 7 7 0 (6) The filler materiai 16 is either composed of mineral particles, synthetic particles or refractory particlës.
In one embodiment of the present invention, the filler material 16 includes particles having a diameter of less than one (1) millimeter, and in another embodiment of the present invention, the filler material 16 includes particles having a diameter of at least one (1 ) millimeter.
Additionally, the filler material 16 includes either PTFE powder together with glass fibers, PTFE powder together with ceramic fibers, or PTFE powder together with quartz fibers and feldspar particles.
The reinforcing material 22 is either a woven material, a knitted material, a braided material or a non-woven material.
The step of spirally winding the reinforcing material 22 is carried out during the cross-linking of the matrix.
The present invention provides a method of manufacturing a roll cover which exhibits the required durometer hardness for the particular type of paper being pressed.
Such hardness of the cover is not only a requirement according to the type of paper being manufactured, but also a requirement according to the type of coating that will be applied thereto for subsequent calendering.
Additionally, roll covers of varying durometer hardness will be required dependent upon the type of furnish being used.
~O 94/09208 2 1 ~ ~ 7 7 0 PCI'/US93/08537 (7) Although the present invention has been described with particular application to the provision of a cover for a press roll, it will be appreciatedby those skilled in the art that such roll covers will also be applicable in soft calendering and the like.
Claims (16)
1. A method of manufacturing a cover for a press roll, said method comprising the steps of:
feeding an epoxy matrix (10) into a container (12);
agitating the epoxy matrix (10);
adding filler material (16) to the matrix (10) while the matrix is being agitated;
conveying the agitated matrix and (10 filler (16) to an application zone (18);
unwinding a roll (20) of reinforcing material (22) such that the unwound reinforcing material (22) extends past the application zone (18);
applying the agitated matrix (10) and filler (16) to the unwound material (22) during passage of the unwound material past the application zone (18); and spirally winding the reinforcing material (22) with the matrix (10) and filler (16) applied thereto around the press roll (28) such that the press roll (28) is covered with the reinforcing material (22) impregnated with the matrix (10) and filler (16), the arrangement being such that the surface characteristics of the resultant cover are dependent on the amount and type of filler material added to the matrix.
feeding an epoxy matrix (10) into a container (12);
agitating the epoxy matrix (10);
adding filler material (16) to the matrix (10) while the matrix is being agitated;
conveying the agitated matrix and (10 filler (16) to an application zone (18);
unwinding a roll (20) of reinforcing material (22) such that the unwound reinforcing material (22) extends past the application zone (18);
applying the agitated matrix (10) and filler (16) to the unwound material (22) during passage of the unwound material past the application zone (18); and spirally winding the reinforcing material (22) with the matrix (10) and filler (16) applied thereto around the press roll (28) such that the press roll (28) is covered with the reinforcing material (22) impregnated with the matrix (10) and filler (16), the arrangement being such that the surface characteristics of the resultant cover are dependent on the amount and type of filler material added to the matrix.
2. A method of manufacturing a cover as set forth in claim 1, wherein the feeding step includes:
feeding a polymeric thermo-plastic matrix into the container (12).
feeding a polymeric thermo-plastic matrix into the container (12).
3. A method of manufacturing a cover as set forth in claim 1, wherein the feeding step includes:
(9) feeding a polymeric thermo-set matrix into the container (12).
(9) feeding a polymeric thermo-set matrix into the container (12).
4. A method of manufacturing a cover as set forth in claim 1, wherein the step of adding filler material includes:
adding mineral particles to the matrix (10).
adding mineral particles to the matrix (10).
5. A method of manufacturing a cover as set forth in claim 1, wherein the step of adding filler material includes:
adding synthetic particles to the matrix (10).
adding synthetic particles to the matrix (10).
6. A method of manufacturing a cover as set forth in claim 1, wherein the step of adding filler material includes:
adding refractory particles to the matrix (10).
adding refractory particles to the matrix (10).
7. A method of manufacturing cover as set forth in claim 1, wherein the step of adding filler material includes:
adding material having a particle size less than one (1) millimeter in diameter.
adding material having a particle size less than one (1) millimeter in diameter.
8. A method of manufacturing cover as set forth in claim 1, wherein the step of adding filler material includes:
adding material having a particle size of at least one (1) millimeter in diameter.
adding material having a particle size of at least one (1) millimeter in diameter.
9. A method of manufacturing a cover as set forth in claim 1, wherein the step of adding filler material includes:
adding PTFE powder, together with glass fibers.
adding PTFE powder, together with glass fibers.
10. A method of manufacturing a cover as set forth in claim 1, wherein the step of adding filler material includes:
(10) adding PTFE powder, together with ceramic fibers.
(10) adding PTFE powder, together with ceramic fibers.
11. A method of manufacturing a cover as set forth in claim 1, wherein the step of adding filler material includes:
adding PTFE powder, together with quartz fibers, together with feldspar particles.
adding PTFE powder, together with quartz fibers, together with feldspar particles.
12. A method of manufacturing a cover as set forth in claim 1, wherein the reinforcing material (22) is a woven material.
13. A method of manufacturing a cover as set forth in claim 1, wherein the reinforcing material (22) is a knitted material.
14. A method of manufacturing a cover as set forth in claim 1, wherein the reinforcing material (22) is a braided material.
15. A method of manufacturing a cover as set forth in claim 1, wherein the reinforcing material (22) is a non-woven material.
16. A method of manufacturing a cover as set forth in claim 1, wherein the step of spirally winding the reinforcing material (22) is carried out during the cross-linking of the matrix (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US96263692A | 1992-10-16 | 1992-10-16 | |
| US07/962,636 | 1992-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2146770A1 true CA2146770A1 (en) | 1994-04-28 |
Family
ID=25506169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002146770A Abandoned CA2146770A1 (en) | 1992-10-16 | 1993-09-09 | A method of manufacturing a cover for a press roll |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0664843B1 (en) |
| JP (1) | JP2881663B2 (en) |
| CA (1) | CA2146770A1 (en) |
| DE (1) | DE69314966T2 (en) |
| WO (1) | WO1994009208A1 (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601920A (en) * | 1995-04-06 | 1997-02-11 | Stowe Woodward Licensco, Inc. | Covered roll and a method for making the same |
| DE19758443A1 (en) † | 1997-03-14 | 1998-09-24 | Voith Sulzer Finishing Gmbh | Smoothing unit |
| FI111025B (en) | 1997-05-30 | 2003-05-15 | Metso Paper Inc | A roll having a thermoplastic coating, a method of making the roll, a composition of a thermoplastic surface coating, a calendering process using rolls with a thermoplastic coating of the invention, and a paper / board made by the rollers |
| US6409645B1 (en) | 1997-06-13 | 2002-06-25 | Sw Paper Inc. | Roll cover |
| DE19729189A1 (en) * | 1997-07-08 | 1999-01-14 | Voith Sulzer Papiermasch Gmbh | Press roller for the press section of a papermaking machine, to extract water from the wet web |
| FI103740B1 (en) * | 1998-06-02 | 1999-08-31 | Valmet Corp | Nipple roll diaper |
| DE19925419A1 (en) * | 1999-06-02 | 2000-12-07 | Voith Sulzer Papiertech Patent | Elastic roller and method of making it |
| US6793754B1 (en) | 1999-07-28 | 2004-09-21 | Advanced Materials Corporation | Covered roll having an under-layer formed of resin infused densely packed fibers that provides increased strength and adhesion properties |
| EP1422341B1 (en) * | 1999-07-28 | 2009-11-11 | Advanced Materials Corporation | Method of forming a roll |
| US6776744B1 (en) | 1999-07-28 | 2004-08-17 | Advanced Materials Corporation | Method for and devices used in covering a roll core with a resin infused fiber reinforced adhesive under layer and a polymeric top layer, the method including the use of an improved mold tape |
| US6206994B1 (en) | 1999-07-28 | 2001-03-27 | Advanced Materials Corporation | Method and apparatus for covering a metal roll core with a polymeric material preferable a high performance thermoplastic material |
| DE10001409A1 (en) | 2000-01-14 | 2001-09-06 | Voith Paper Patent Gmbh | Elastic roller and method of making it |
| DE10339443A1 (en) * | 2003-04-11 | 2004-10-21 | Dirk Richter | Method for coating a roller with a coating formed from at least two components by mixing the two components under vacuum generally useful in applying coatings by means of a roller |
| US6874232B2 (en) | 2003-05-21 | 2005-04-05 | Stowe Woodward, Llc | Method for forming cover for industrial roll |
| DE102004025116A1 (en) | 2004-05-21 | 2005-12-08 | Voith Paper Patent Gmbh | Fiber composite roll cover for machines processing flat materials comprises a compound whose composition varies in different areas |
| US10287731B2 (en) | 2005-11-08 | 2019-05-14 | Stowe Woodward Licensco Llc | Abrasion-resistant rubber roll cover with polyurethane coating |
| DE102007006821A1 (en) * | 2007-02-07 | 2008-08-14 | Voith Patent Gmbh | Roll cover with friction-reducing filler |
| JP5651847B2 (en) * | 2011-04-06 | 2015-01-14 | 西武ポリマ化成株式会社 | Manufacturing method of resin roll using cotton roll core metal for calendar |
| DE102011075810A1 (en) * | 2011-05-13 | 2012-11-15 | Voith Patent Gmbh | CORROSION RESISTANT ROLL COATING |
| FI20115952L (en) | 2011-09-29 | 2013-03-30 | Metso Paper Inc | Track coating |
| DE102012205227B3 (en) * | 2012-03-30 | 2013-04-11 | Voith Patent Gmbh | Process for producing a roll cover and roll cover |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3069304A (en) * | 1959-11-16 | 1962-12-18 | Freudenberg Carl Fa | Method of providing a mandrel with a compact uniform covering |
| US3800381A (en) * | 1972-06-19 | 1974-04-02 | Beloit Corp | Covered roll for paper making |
| JPS5936133B2 (en) * | 1979-08-10 | 1984-09-01 | 山内ゴム工業株式会社 | Polyurethane rubber roll and its manufacturing method |
| US4576845A (en) * | 1983-12-15 | 1986-03-18 | Krc Inc. | Thermally conductive base layers for cast polyurethane roll covers |
| FI92419C (en) * | 1990-11-19 | 1994-11-10 | Valmet Paper Machinery Inc | Roll coating method and roll coating |
-
1993
- 1993-09-09 WO PCT/US1993/008537 patent/WO1994009208A1/en active IP Right Grant
- 1993-09-09 DE DE69314966T patent/DE69314966T2/en not_active Expired - Fee Related
- 1993-09-09 JP JP6509996A patent/JP2881663B2/en not_active Expired - Lifetime
- 1993-09-09 CA CA002146770A patent/CA2146770A1/en not_active Abandoned
- 1993-09-09 EP EP93921473A patent/EP0664843B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69314966T2 (en) | 1998-03-26 |
| DE69314966D1 (en) | 1997-12-04 |
| EP0664843A1 (en) | 1995-08-02 |
| JPH07508566A (en) | 1995-09-21 |
| WO1994009208A1 (en) | 1994-04-28 |
| JP2881663B2 (en) | 1999-04-12 |
| EP0664843B1 (en) | 1997-10-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |