EP0633353B1 - Dosiersystem - Google Patents
Dosiersystem Download PDFInfo
- Publication number
- EP0633353B1 EP0633353B1 EP94109366A EP94109366A EP0633353B1 EP 0633353 B1 EP0633353 B1 EP 0633353B1 EP 94109366 A EP94109366 A EP 94109366A EP 94109366 A EP94109366 A EP 94109366A EP 0633353 B1 EP0633353 B1 EP 0633353B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- holder
- wall
- metering system
- continuation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
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
Definitions
- the invention relates to a metering system according to the preamble of claim 1.
- Such metering systems are mainly used for coating webs of paper or cardboard, which is also provided in this case.
- doctor blades known or designed as roller doctor blades, are used for coating or metering coating slip on sheets of paper or cardboard (see, for example, DE-C-21 50 906).
- a roller guiding the paper web is generally associated with the doctor rod. It is often also provided that the coating slip used for coating is fed from a chamber through an orifice which, as a boundary wall, has the clamping wall to which the holder of the doctor blade bed receiving the roller doctor rod is fixed, e.g. is pressed.
- edges or cross-sectional changes in the flow channel now generally arise, which can have a disadvantageous effect on the coating.
- Such a paragraph also arises in particular at the transition between the aforementioned clamping wall and the holder of the doctor bed.
- the object of the invention is to design the metering system so that as few edges and jumps in the flow path as possible, i.e. Corresponding cross-sectional enlargements or narrowing occur on the same.
- the doctor blade bar with 1 and the receiving it generally made of plastic bed with 2 and the holder made in one piece with the bed 2 with 3.
- the doctor blade rod 1 is generally in contact with a counter roller C guiding the web W, either the coating slip being fed directly to the web or initially only to the roller C, and then later being transferred to the web in an area where it wraps around the roller or touched.
- the latter is generally the case when a press nip is formed between two web guide rollers and the coating slip is transferred there to the web.
- the coating slip is fed through the channel 4, which is delimited on one side by a clamping wall 8, on which the holder 3 is pressed by means of a hydraulically or pneumatically operating pressure element 13 - generally designed as a pressure hose.
- a projection 12 of the holder 3 serves as a fixation.
- the holder 3 now has a thickness jump in the region of the end of the clamping wall 8, an extension 6 of the holder being formed which has a bevel which is at a corresponding bevel of the end wall of the clamping wall 8 is present.
- the angle which the bevel of the extension 6 forms with the corresponding side wall surface of the holder 3 is between 15 and 55 °.
- the extension of a tip 7 is formed according to Figure 1, so that there is a smooth transition between the clamping wall 8 and the holder 3 and thus there is a relatively low-loss flow out of the channel 4.
- a groove at the transition between the extension 6 and the Provided end of the holder is a groove at the transition between the extension 6 and the Provided end of the holder. This mobility is necessary so that the doctor bed and thus the doctor rod can be pushed in the direction of the roller C. This is also generally done by means of a pneumatically acting pressure hose 14.
- FIG. 3 shows a variant in which the extension 6 ′′ of the holder 3 ′′ is relatively long and slender.
- its side delimitation surface which is distant from the clamping part of the holder 3 ′′, is aligned with the corresponding side delimitation surface of the clamping 8 ′′.
- the angle of the inclination of the clamping and the extension is approximately 70 ° relatively large and therefore not as cheap as a smaller angle. It is namely favorable if the extension can slide relatively easily on the corresponding wall of the clamping 8 ′′ when the holder 3 ′′ is bent.
- FIG. 4 shows a relatively short extension 6 '' 'of the holder 3' '', which ends in a small rounded tip and which bears against the corresponding mating surface of the clamping 8 '' '.
- the holder 23 has a further thick crack at 29 and forms on it with a relatively small cross section trained, relatively weakened point of rotation for the doctor bed.
- the projection 26 is supported on the clamping wall 28 of the doctor holder. This is arranged approximately at right angles to the wall along which the coating slip flows according to the arrow entered. So here the slope of the clamping wall is no longer available in other figures. In this respect, as well as a slope with too little inclination, ie an angle greater than 55 °, is unfavorable in the event that the doctor bed and holder are replaced by a doctor blade. You then no longer have such a streamlined course of the channel to the web or counter roll or coating edge of the doctor element.
Landscapes
- Coating Apparatus (AREA)
- Paper (AREA)
- Medicines Containing Plant Substances (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4323166 | 1993-07-10 | ||
DE4323166 | 1993-07-10 | ||
DE4327544 | 1993-08-16 | ||
DE4327544A DE4327544C1 (de) | 1993-07-10 | 1993-08-16 | Dosiersystem |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0633353A1 EP0633353A1 (de) | 1995-01-11 |
EP0633353B1 true EP0633353B1 (de) | 1996-08-28 |
Family
ID=25927582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94109366A Expired - Lifetime EP0633353B1 (de) | 1993-07-10 | 1994-06-17 | Dosiersystem |
Country Status (7)
Country | Link |
---|---|
US (1) | US5445673A (fi) |
EP (1) | EP0633353B1 (fi) |
JP (1) | JPH07108202A (fi) |
AT (1) | ATE141975T1 (fi) |
CA (1) | CA2127663A1 (fi) |
DE (2) | DE4327544C1 (fi) |
FI (1) | FI943279A (fi) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29510486U1 (de) * | 1995-06-30 | 1995-08-17 | Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim | Rollrakel-Baugruppe |
DE102005029613A1 (de) * | 2005-06-23 | 2007-01-04 | Voith Patent Gmbh | Vorrichtung zur Dosierung und/oder Egalisierung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2150907C3 (de) * | 1971-10-13 | 1978-03-30 | Feldmuehle Ag, 4000 Duesseldorf | Vorrichtung zum Streichen von bahnförmigem Gut |
US3859690A (en) * | 1972-10-02 | 1975-01-14 | Ross Ltd James | Doctor blade assembly |
DE3022955C2 (de) * | 1980-06-19 | 1982-12-16 | Jagenberg-Werke AG, 4000 Düsseldorf | Vorrichtung zum Regeln der Auftragsstärke beim Beschichten laufender Materialbahnen |
DE3236991A1 (de) * | 1982-10-06 | 1984-04-12 | J.M. Voith Gmbh, 7920 Heidenheim | Streicheinrichtung fuer laufende warenbahnen |
FI72903C (fi) * | 1984-04-17 | 1987-08-10 | Ahlstroem Oy | Foerfarande och anordning foer bestrykning av bana. |
FI73266C (fi) * | 1984-06-29 | 1987-09-10 | Waertsilae Oy Ab | Stavskavare foer pappersbelaeggningsanordning. |
FI81734C (fi) * | 1987-12-03 | 1990-12-10 | Valmet Paper Machinery Inc | Foerfarande och anordning foer applicering och dosering av bestrykningsmedel pao roerligt underlag. |
US5192591A (en) * | 1991-11-14 | 1993-03-09 | Beloit Technologies, Inc. | Short dwell coater apparatus |
-
1993
- 1993-08-16 DE DE4327544A patent/DE4327544C1/de not_active Expired - Fee Related
-
1994
- 1994-06-17 EP EP94109366A patent/EP0633353B1/de not_active Expired - Lifetime
- 1994-06-17 AT AT94109366T patent/ATE141975T1/de active
- 1994-06-17 DE DE59400547T patent/DE59400547D1/de not_active Expired - Fee Related
- 1994-07-08 US US08/273,030 patent/US5445673A/en not_active Expired - Fee Related
- 1994-07-08 CA CA002127663A patent/CA2127663A1/en not_active Abandoned
- 1994-07-08 FI FI943279A patent/FI943279A/fi not_active Application Discontinuation
- 1994-07-11 JP JP6158695A patent/JPH07108202A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FI943279A (fi) | 1995-01-11 |
EP0633353A1 (de) | 1995-01-11 |
JPH07108202A (ja) | 1995-04-25 |
US5445673A (en) | 1995-08-29 |
CA2127663A1 (en) | 1995-01-11 |
DE4327544C1 (de) | 1995-01-19 |
ATE141975T1 (de) | 1996-09-15 |
FI943279A0 (fi) | 1994-07-08 |
DE59400547D1 (de) | 1996-10-02 |
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