CA2119928A1 - Doctor bar, preferably for coating continuous paper or cardboard webs - Google Patents
Doctor bar, preferably for coating continuous paper or cardboard websInfo
- Publication number
- CA2119928A1 CA2119928A1 CA 2119928 CA2119928A CA2119928A1 CA 2119928 A1 CA2119928 A1 CA 2119928A1 CA 2119928 CA2119928 CA 2119928 CA 2119928 A CA2119928 A CA 2119928A CA 2119928 A1 CA2119928 A1 CA 2119928A1
- Authority
- CA
- Canada
- Prior art keywords
- tape
- thread
- bar
- carrier bar
- wrapping
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
- D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
Landscapes
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
- Coating Apparatus (AREA)
- Making Paper Articles (AREA)
Abstract
Doctor Bar, Preferably for Coating Continuous Webs of Paper or Cardboard Abstract The present invention relates to a preferably circular-cylindrical doctor bar having a tape-like or thread-like wrapping. The invention is characterized by the fact that the wrapping is attached by adhesive over the entire length of the tape or thread on a preferably circular-cylindrical carrier bar (1, 1', 1'').
Fig. 1
Fig. 1
Description
!
~ 211992~
Attorney's File: U 1960 ! J.M. Voith GmbH
7920 Heidenheim Code Word: "Adhesive Winding"
;
J Doctor Bar. Preferably ~ r Coating , Continuous Web~ of_PapeE or Cardboard The present invention relates to a doctor bar according i to the preamble to Claim 1. Such doctor bars are known from i U~ 48 48 268. In that case, the tape-like wrapping consists in general of a very thin metal wire. The attachment of this I metal wire on the doctor bar takes place in general by ~-attaching the ends of the wire wrapping by welding or soldering. It is also possible to provide a pressure 61eeve ~ -at the ends o~ the carrier bar so as to secure the ends of *he wire in position. A tear in the wire wrapping at one `-plar,e renders the doctor bar useless and the paper produced is also unusable for this period o~ time and there may even result a tear in the web.
¦ It is the object of the present invention to indicate a ~ -doctor bar which permits dependable operation.
This object is achieved in accordance with the invention ¦ by the feature~ set forth in the body of Claim 1. One particularly favorable method of manufacture can be noted from Claim 4 or Claim 5.
As tape-like or thread-like material, there enter into 1 ` 2:1~9~28 consideration both metal wire as well as plastic or glass.
Ceramic-coated wires also enter into consideration.
In the case of metal wires or threads of glass, one could, by bombardment with a laser gun, also partially soften the tape material on the side facing the carrier bar and thus connect it to the carrier bar by a kind of welding.
One will also preferably provide only that side of the tape material with adhesive which comes to rest on the carrier bar.
The cross section of the tape material can be circular, polygonal, trapezoidal, square, rectangular or elliptical so as to produce preferre~ types of the grooves existing between the individual windings. If the tape material is rectangular or square, the individual windings must, of course, be applied to the carrier bar spaced from each other in order to produce grooves between them.
Finally, it is also possible ~o produce a smooth bar by means of such a wrapping, for instance with rectangular tape cross section (or wire cross section) if the individual windings abut each other.
The invention will be explained below with reference to the attached figures, of which Fig. 1 shows a method of manufacture, and Figs. 2 to 6 are axial sections through the doctor bar of the invention.
According t~ Fig. 1, a tape-like profile material, for 2~9928 instance a wire 2, is wound on a carrier bar 1. There is provided in this case an adhesive dispenser 9 which, shortly before the place of winding, coats the side of the profile material which comes into contact with the carrier bar 1 with an adhesive.
ThP adhesive material can be a metal adhesive, for instance also a two-component adhesive, so that hardening will have taken place alr~ady shortly after the winding on. ~ -Fig. 2 is an axial section throuyh the doctor bar produced in this manner, the individual windings of the tape material 2 being fastened by means of an adhesive 3 on the carrier bar 1 which prefera~ly has the shape of a circular cylinder.
According to Fig. 2, the tape material has a trapezoidal cross section so that grooves 12 are produced between the individual windings. The adhesive is indicated in this case ~
by reference numeral 5 and it is arranged in small grooves of ~-the tape material 4 so that any emergence of the adhesive to the surface of the finished bar is not possible.
In Fig. 4, the tape material 6 has a rectangular crsss section so that the windings are applied on the carrier bar 1'' spaced from each other in order to produce grooves 12' between the individual windings.
According to Fig. 5, the windings of said tape are ~ -applied on the carrier bar abutting each other so that there is produced a bar having a smooth outer surface.
!
~ 21~9928 :7 .~ - 4 -¦ The same e~fect will be achieved according to Fig. 6 ~, with tapes o~ trapezoidal cross section 4 and 4', the tapes ¦ being applied alternately in different arrangemenk.
i Going back to Fig. 1, it is possible in the case of ¦ metal wires ~orming the wire wrapping of the carrier bar 1, to also so~ten the tape material by soldering or a laser beam on the side facing the carrier bar 1 and in this way to ~i obtain a welding with said bar.
One can also provide for the carrier bar to be coated with a pressure-sensitive adhesive. This has the result that, upon the winding up of the thread, wire or tape, the adhesive which is stored in capsules emerges due to the high local pressure and the wound-up material is firmly connected to the carrier essentially over its entire length.
¦ May 15, 1992 'l cg/~
~, .
~ 211992~
Attorney's File: U 1960 ! J.M. Voith GmbH
7920 Heidenheim Code Word: "Adhesive Winding"
;
J Doctor Bar. Preferably ~ r Coating , Continuous Web~ of_PapeE or Cardboard The present invention relates to a doctor bar according i to the preamble to Claim 1. Such doctor bars are known from i U~ 48 48 268. In that case, the tape-like wrapping consists in general of a very thin metal wire. The attachment of this I metal wire on the doctor bar takes place in general by ~-attaching the ends of the wire wrapping by welding or soldering. It is also possible to provide a pressure 61eeve ~ -at the ends o~ the carrier bar so as to secure the ends of *he wire in position. A tear in the wire wrapping at one `-plar,e renders the doctor bar useless and the paper produced is also unusable for this period o~ time and there may even result a tear in the web.
¦ It is the object of the present invention to indicate a ~ -doctor bar which permits dependable operation.
This object is achieved in accordance with the invention ¦ by the feature~ set forth in the body of Claim 1. One particularly favorable method of manufacture can be noted from Claim 4 or Claim 5.
As tape-like or thread-like material, there enter into 1 ` 2:1~9~28 consideration both metal wire as well as plastic or glass.
Ceramic-coated wires also enter into consideration.
In the case of metal wires or threads of glass, one could, by bombardment with a laser gun, also partially soften the tape material on the side facing the carrier bar and thus connect it to the carrier bar by a kind of welding.
One will also preferably provide only that side of the tape material with adhesive which comes to rest on the carrier bar.
The cross section of the tape material can be circular, polygonal, trapezoidal, square, rectangular or elliptical so as to produce preferre~ types of the grooves existing between the individual windings. If the tape material is rectangular or square, the individual windings must, of course, be applied to the carrier bar spaced from each other in order to produce grooves between them.
Finally, it is also possible ~o produce a smooth bar by means of such a wrapping, for instance with rectangular tape cross section (or wire cross section) if the individual windings abut each other.
The invention will be explained below with reference to the attached figures, of which Fig. 1 shows a method of manufacture, and Figs. 2 to 6 are axial sections through the doctor bar of the invention.
According t~ Fig. 1, a tape-like profile material, for 2~9928 instance a wire 2, is wound on a carrier bar 1. There is provided in this case an adhesive dispenser 9 which, shortly before the place of winding, coats the side of the profile material which comes into contact with the carrier bar 1 with an adhesive.
ThP adhesive material can be a metal adhesive, for instance also a two-component adhesive, so that hardening will have taken place alr~ady shortly after the winding on. ~ -Fig. 2 is an axial section throuyh the doctor bar produced in this manner, the individual windings of the tape material 2 being fastened by means of an adhesive 3 on the carrier bar 1 which prefera~ly has the shape of a circular cylinder.
According to Fig. 2, the tape material has a trapezoidal cross section so that grooves 12 are produced between the individual windings. The adhesive is indicated in this case ~
by reference numeral 5 and it is arranged in small grooves of ~-the tape material 4 so that any emergence of the adhesive to the surface of the finished bar is not possible.
In Fig. 4, the tape material 6 has a rectangular crsss section so that the windings are applied on the carrier bar 1'' spaced from each other in order to produce grooves 12' between the individual windings.
According to Fig. 5, the windings of said tape are ~ -applied on the carrier bar abutting each other so that there is produced a bar having a smooth outer surface.
!
~ 21~9928 :7 .~ - 4 -¦ The same e~fect will be achieved according to Fig. 6 ~, with tapes o~ trapezoidal cross section 4 and 4', the tapes ¦ being applied alternately in different arrangemenk.
i Going back to Fig. 1, it is possible in the case of ¦ metal wires ~orming the wire wrapping of the carrier bar 1, to also so~ten the tape material by soldering or a laser beam on the side facing the carrier bar 1 and in this way to ~i obtain a welding with said bar.
One can also provide for the carrier bar to be coated with a pressure-sensitive adhesive. This has the result that, upon the winding up of the thread, wire or tape, the adhesive which is stored in capsules emerges due to the high local pressure and the wound-up material is firmly connected to the carrier essentially over its entire length.
¦ May 15, 1992 'l cg/~
~, .
Claims (6)
1. A preferably circular-cylindrical doctor bar having a tape-like or thread-like wrapping, characterized by the fact that the wrapping is attached by adhesive over the entire length of the tape or thread on a preferably circular-cylindrical carrier bar (1, 1', 1'').
2. A doctor bar according to Claim 1, characterized by the fact that the tape or thread has a circular, trapezoidal, rectangular, square or elliptical cross section.
3. A doctor bar according to Claim 1 or 2, characterized by the fact that the wrapping of tape-like or thread-like material is applied on the carrier bar (1'') in the manner of a screw thread with the windings spaced from each other.
4. A method for producing a doctor bar according to any one of Claims 1 to 3, characterized by the fact that shortly before the place of winding, the tape-like or thread-like material is coated with adhesive from an adhesive dispenser on its side facing the carrier bar (1, 1', 1'').
5. A method for producing a doctor bar having a tape-like or thread-like wrapping of metal, glass or plastic preferably in the circumferential direction of the carrier bar (1, 1', 1''), characterized by the fact that, over the entire length of the thread-like or tape-like material, the latter is connected to the carrier bar (1, 1', 1'') by soldering or laser beam welding.
6. A method for producing a doctor bar having a tape like or thread-like wrapping of metal, glass or plastic preferably in the circumferential direction of the carrier bar (1, 1', 1''), characterized by the fact that the carrier bar is coated with a pressure-sensitive adhesive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19924224278 DE4224278A1 (en) | 1992-07-23 | 1992-07-23 | Doctor blade, preferably for coating running webs of paper or cardboard |
| DEP4224278.9 | 1992-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2119928A1 true CA2119928A1 (en) | 1994-02-03 |
Family
ID=6463889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2119928 Abandoned CA2119928A1 (en) | 1992-07-23 | 1993-07-22 | Doctor bar, preferably for coating continuous paper or cardboard webs |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0609416A1 (en) |
| JP (1) | JPH07502203A (en) |
| CA (1) | CA2119928A1 (en) |
| DE (1) | DE4224278A1 (en) |
| FI (1) | FI941334A (en) |
| WO (1) | WO1994002255A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE529814C2 (en) * | 2006-04-11 | 2007-11-27 | Mattssonfoeretagen I Uddevalla | Wire-engraved engraving roll and method of making it |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1853569A (en) * | 1929-04-06 | 1932-04-12 | Jacob A L Moller | Equalizer rod |
| DE3417487A1 (en) * | 1984-05-11 | 1985-11-21 | J.M. Voith Gmbh, 7920 Heidenheim | DEVICE FOR APPLYING A LIQUID ON A RUNNING TRAIN |
| DE3710059C3 (en) * | 1987-03-27 | 1995-08-31 | Voith Gmbh J M | Doctor rod |
| DE3839564A1 (en) * | 1988-11-24 | 1990-05-31 | Jagenberg Ag | Doctor shaft for the volumetric metering out of coating material |
| DE4031313A1 (en) * | 1990-10-04 | 1992-04-09 | Jagenberg Ag | Paper coating doctor rod for cardboard web - has wire wound in out-of-round cross=section to increase rod life for volumetric coating material dosage |
-
1992
- 1992-07-23 DE DE19924224278 patent/DE4224278A1/en not_active Ceased
-
1993
- 1993-07-22 WO PCT/EP1993/001950 patent/WO1994002255A2/en not_active Application Discontinuation
- 1993-07-22 JP JP6504170A patent/JPH07502203A/en active Pending
- 1993-07-22 CA CA 2119928 patent/CA2119928A1/en not_active Abandoned
- 1993-07-22 EP EP93917620A patent/EP0609416A1/en not_active Withdrawn
-
1994
- 1994-03-22 FI FI941334A patent/FI941334A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI941334A0 (en) | 1994-03-22 |
| FI941334A (en) | 1994-03-22 |
| EP0609416A1 (en) | 1994-08-10 |
| WO1994002255A3 (en) | 1994-03-31 |
| DE4224278A1 (en) | 1994-01-27 |
| WO1994002255A2 (en) | 1994-02-03 |
| JPH07502203A (en) | 1995-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |