DE841544C - Scraper knife for scraping off the excess coating fluid from paper or fabric webs - Google Patents
Scraper knife for scraping off the excess coating fluid from paper or fabric websInfo
- Publication number
- DE841544C DE841544C DEZ1596A DEZ0001596A DE841544C DE 841544 C DE841544 C DE 841544C DE Z1596 A DEZ1596 A DE Z1596A DE Z0001596 A DEZ0001596 A DE Z0001596A DE 841544 C DE841544 C DE 841544C
- Authority
- DE
- Germany
- Prior art keywords
- scraping
- wire
- groove
- paper
- knife
- 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
-
- 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
-
- 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
- D21H5/006—Controlling or regulating
- D21H5/0062—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper
- D21H5/0067—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper with an essentially cylindrical body, e.g. roll or rod
Landscapes
- Coating Apparatus (AREA)
Description
Auf Papier= oder Gewebebahnen, die mit einer mehr oder weniger dickflüssigen Lösung bzw. Emulsion getränkt oder bestrichen werden sollen, wird praktisch zunächst ein Überschuß an Flüssigkeit - aufgetragen und dieser Überschuß nachträglich durch ein Schabemesser wieder entfernt. Dadurch wird eine Gewähr erzielt, daß die Flüssigkeit die Bahn auf ihrer ganzen Ausdehnung gleichmäßig benetzt und auch in einer gleichmäßig starken Schicht zurückbleibt. Zum Abstreifen dienen sogenannte Schabemesser, die mit einer mehr oder weniger abgerundeten Schneide versehen sind. Bei der Benutzung derartiger Schabeniesser treten jedoch häufiger Störungen auf, wenn sich Ansammlungen von Fasern oder sonstigen Fremdkörpern vor dem Messer bilden. Dadurch werden dann leicht Längsstreifen auf der bestrichenen Bahn hervorgerufen. Die Folge ist ein .:mehr oder minder hoher Ausschuß.On paper = or webs of fabric with a more or less viscous Solution or emulsion are to be soaked or coated, is practical first an excess of liquid - applied and this excess through afterwards a scraping knife removed again. This ensures that the liquid the web is evenly wetted over its entire extent and evenly in one strong layer remains. So-called scraping knives are used for scraping are provided with a more or less rounded cutting edge. When using Such cockroach eaters, however, are more likely to malfunction when there are accumulations of fibers or other foreign bodies in front of the knife. This will then slightly longitudinal streaks on the coated web. The consequence is a .: more or less high rejects.
Der Erfindung liegt die'"Aufgabe zugrunde, ein Schabemesser für die genannten Zwecke so auszu-, bilden, daß die bisherigen Nachteile vermieden werden. Erfindungsgemäß wird die Schneide des Schabemessers aus einem rotierenden Draht kreisrunden Querschnitts hergestellt. Vorteilhaft wird der Draht angetrieben, und zwar derart, daß sich seine Oberfläche an der bewegten. Papier- oder. Gewebebahn abwälzt. Der Draht kann seinerseits in einer Längsnut des Schabemessers ruhen. Damit der Draht immer wieder gereinigt wird, kann im Tiefsten der Nut ein Filzstreifen od. dgl. angebracht sein. Insbesondere dann, wenn die Schneide des Schabemessers nach unten gerichtet ist, empfiehlt es sich, die Nut so tief auszubilden, daß der Draht bis über die Hälfte in der Nut eingebettet liegt. Durch Andrücken der Nutenränder kann dann der Draht vor dem Herausfallen geschützt werden.The invention is based on the '"object of providing a scraping knife for mentioned purposes so to train that the previous disadvantages are avoided. According to the invention, the cutting edge of the scraping knife is made from a rotating wire circular cross-section produced. The wire is advantageously driven, and in such a way that its surface moved on the. Paper or. Fabric panel shifts. The wire can for its part rest in a longitudinal groove of the scraping knife. In order to If the wire is cleaned again and again, a strip of felt can be found in the deepest part of the groove or the like. Be attached. Especially when the edge of the scraper knife is directed downwards, it is advisable to form the groove so deep that the Wire is embedded more than halfway in the groove. By pressing the edges of the groove the wire can then be protected from falling out.
Es hat sich ergeben, daß bei der Ausbildung des Schabemessers gemäß der Erfindung Ansammlungen von Fremdkörpern vor dem Schabemesser verhindert werden. Die Fremdkörper. werden entweder in das Bad zurückgeführt, aus dem sie durch laufende Filtration des Inhalts ausgeschieden werden können, oder aber sie wandern mit der bestrichenen Bahn weiter, wenn sie infolge ihrer geringen Größe nicht stören.It has been found that in the formation of the scraper knife according to the invention prevents the accumulation of foreign objects in front of the scraper knife. The foreign bodies. are either returned to the bathroom from which they are running through Filtration of the contents can be excreted, or they migrate with the coated web if they do not interfere due to their small size.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung schematisch dargestellt.An exemplary embodiment of the invention is shown schematically in the drawing shown.
Das Schabemesser i ist an seiner Schneidenkante mit einer Nut 2 versehen, in welche ein polierter runder Draht mit einem Radius von etwa i. bis-' 2 n..'eingebettet liegt. Zur Verdeutlichung ist der Draht in der Zeichnung mit größerem Durchmesser dargestellt. Im Tiefsten-der Nut. 2 ist in einer Erweiterung derselben eine Filzleiste 4 eingebettet. Die oberen freien Kanten 5 der Leiste i, die die Nut 2 begrenzen, sind etwas gegeneinander gedrückt, so daß der Draht nicht nach oben hinaus der Nut 2 entfernt werden kann.The scraper knife i is provided with a groove 2 on its cutting edge, in which a polished round wire with a radius of about i. until- '2 n ..' embedded lies. For clarity, the wire in the drawing has a larger diameter shown. In the deepest part of the groove. 2 is a felt strip in an extension of the same 4 embedded. The upper free edges 5 of the bar i, which delimit the groove 2, are slightly pressed against each other so that the wire does not go up out of the groove 2 can be removed.
Der Draht 3 ist seitlich der Bahn 6 mit einem geeigneten Antrieb versehen, der in der Zeichnung nicht dargestellt ist. Bewegt sich die Bahn 6 in der Pfeilrichtung 7 über den Draht 3 hinweg, so werden mit dem abgestreiften Überschuß auch etwa darin enthaltene Fremdkörper auf der Vorderseite der Leiste i in das Tauchbad' zurückfließen, während Verunreinigungen geringerer Größe in der aufgetragenen Streichschicht. verbleiben. Sollten Fremdkörper an dem Draht 3 hängenbleiben, so werden diese durch die Filzfeiste 4 zurückgehalten. Eine hin und her gehende Bewegung des rotierenden Drahtes, bei stillstehender Nut, hält den Draht und die Nut weftgehendst frei von Ablagerungen. dieser Art.The wire 3 is provided on the side of the track 6 with a suitable drive, which is not shown in the drawing. If the web 6 moves in the direction of the arrow 7 over the wire 3 away, so with the stripped excess are also about in it Contained foreign bodies on the front of the bar i flow back into the immersion bath ', while impurities of smaller size in the applied coating layer. remain. Should foreign bodies get stuck on the wire 3, they will be blocked by the felt 4 withheld. A reciprocating motion of the rotating wire, at stationary groove, keeps the wire and the groove as far as possible free of deposits. this kind.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ1596A DE841544C (en) | 1950-12-03 | 1950-12-03 | Scraper knife for scraping off the excess coating fluid from paper or fabric webs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ1596A DE841544C (en) | 1950-12-03 | 1950-12-03 | Scraper knife for scraping off the excess coating fluid from paper or fabric webs |
Publications (1)
Publication Number | Publication Date |
---|---|
DE841544C true DE841544C (en) | 1952-06-16 |
Family
ID=7618171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEZ1596A Expired DE841544C (en) | 1950-12-03 | 1950-12-03 | Scraper knife for scraping off the excess coating fluid from paper or fabric webs |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE841544C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1039827B (en) * | 1952-12-31 | 1958-09-25 | Champion Paper Co Ltd | Squeegee for the production of coating paper or the like. |
DE1054828B (en) * | 1954-04-20 | 1959-04-09 | Champion Paper Co Ltd | Device for producing coated paper, in particular art paper |
DE1235723B (en) * | 1961-11-08 | 1967-03-02 | Eck & Soehne Joseph | Coating head of a paper coating machine |
DE1295349B (en) * | 1963-05-22 | 1969-05-14 | Kimberly Clark Co | Paper machine |
DE3710735A1 (en) * | 1987-03-31 | 1988-10-13 | Voith Gmbh J M | Headbox for a papermachine or the like |
-
1950
- 1950-12-03 DE DEZ1596A patent/DE841544C/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1039827B (en) * | 1952-12-31 | 1958-09-25 | Champion Paper Co Ltd | Squeegee for the production of coating paper or the like. |
DE1054828B (en) * | 1954-04-20 | 1959-04-09 | Champion Paper Co Ltd | Device for producing coated paper, in particular art paper |
DE1235723B (en) * | 1961-11-08 | 1967-03-02 | Eck & Soehne Joseph | Coating head of a paper coating machine |
DE1295349B (en) * | 1963-05-22 | 1969-05-14 | Kimberly Clark Co | Paper machine |
DE3710735A1 (en) * | 1987-03-31 | 1988-10-13 | Voith Gmbh J M | Headbox for a papermachine or the like |
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