EP2283183A1 - Scraper - Google Patents

Scraper

Info

Publication number
EP2283183A1
EP2283183A1 EP09741979A EP09741979A EP2283183A1 EP 2283183 A1 EP2283183 A1 EP 2283183A1 EP 09741979 A EP09741979 A EP 09741979A EP 09741979 A EP09741979 A EP 09741979A EP 2283183 A1 EP2283183 A1 EP 2283183A1
Authority
EP
European Patent Office
Prior art keywords
scraper
matrix material
cleaning
resin matrix
copper
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.)
Withdrawn
Application number
EP09741979A
Other languages
German (de)
French (fr)
Inventor
Helmut Sterkl
Hubert Bischof
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2283183A1 publication Critical patent/EP2283183A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/04—Doctors for drying cylinders

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

A scraper for scraping and/or cleaning, in particular for scraping and/or cleaning units which serve for the production and/or treatment of a fibrous web, and preferably for scraping and/or cleaning drying cylinders, is composed of a composite material comprising a resin matrix material with fibers embedded therein. Copper and/or at least one copper alloy is mixed into the resin matrix material, and/or the resin matrix material is at least partially substituted by silicon-modified epoxy resin.

Description

Schaber scraper
Die Erfindung betrifft einen Schaber zur Beschaberung und/oder Reinigung, insbesondere zur Beschaberung und/oder Reinigung von der Herstellung und/oder Behandlung einer Faserstoffbahn dienenden Einheiten und vorzugsweise zur Beschaberung und/oder Reinigung von Trockenzylindern, wobei der Schaber aus einem Verbundwerkstoff aus einem Harzmatrixmaterial mit darin eingebetteten Fasern besteht.The invention relates to a scraper for Beschaberung and / or cleaning, in particular for beschaberung and / or cleaning of the production and / or treatment of a fibrous web serving units and preferably for Beschaberung and / or cleaning of drying cylinders, wherein the scraper of a composite material of a resin matrix material with embedded fibers.
Für die Beschaberung und/oder Reinigung von Trockenzylindern werden haupt- sächlich Verbundfaserschaber aus einem Glas- und/oder Kohlefaser enthaltenden Faserverbund verwendet. Dabei ist das Hauptaugenmerk auf die Schaberstandzeit und die Reinigungswirkung des Schabers gerichtet. Charakteristisch für die genannten Werkstoffkombinationen ist jedoch ein relativ hoher Reibbeiwert. Ein solcher relativ hoher Reibbeiwert bringt eine für den Schaber benötigte hohe Rei- bungsleistung mit sich. Entsprechend groß müssen auch die Antriebe der betreffenden Einheiten dimensioniert sein, denen der Schaber zugeordnet ist. Der Stromverbrauch dieser Antriebe ist ebenfalls relativ hoch.For the Beschaberung and / or cleaning of drying cylinders are mainly composite fiber scraper from a glass and / or carbon fiber containing fiber composite used. The main focus is on the scraper life and the cleaning action of the scraper. Characteristic of the material combinations mentioned, however, is a relatively high coefficient of friction. Such a relatively high coefficient of friction brings about a high friction performance required for the scraper. Correspondingly large, the drives of the respective units must be dimensioned, which is associated with the scraper. The power consumption of these drives is also relatively high.
Der Erfindung liegt die Aufgabe zugrunde, einen verbesserten Schaber der ein- gangs genannten Art zu schaffen, der einen reduzierten Reibbeiwert aufweist.The invention has for its object to provide an improved scraper of the type mentioned above, which has a reduced coefficient of friction.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass der Schaber ein Matrixmaterial wie beispielsweise Epoxidharz enthält, in welches Kupfer und/oder wenigstens eine Kupferlegierung eingemischt sind, und/oder welches zumindest teilweise durch silikonmodifiziertes Epoxid substituiert ist. Aufgrund dieser Merkmale wird der Reibbeiwert des Schabers reduziert. Durch diese Reduzierung des Reibbeiwertes kann die benötigte Reibungsleistung für den Schaber in der betreffenden Einheit, z.B. in der Trockengruppe, reduziert und somit die Dimensionierung und der Stromverbrauch der Antriebe der betreffenden Einheit verringert werden.According to the invention this object is achieved in that the scraper contains a matrix material such as epoxy resin, in which copper and / or at least one copper alloy are mixed, and / or which is at least partially substituted by silicone-modified epoxide. Due to these features, the friction coefficient of the scraper is reduced. By reducing the coefficient of friction, the required frictional power for the scraper in the relevant unit, for example in the dryer group, can be reduced and thus the dimensioning and power consumption of the drives of the relevant unit can be reduced.
Bevorzugt ist das Kupfer bzw. die wenigstens eine Kupferlegierung in Form von Pulver oder Flocken in das Harzmatrixmaterial eingemischt.Preferably, the copper or the at least one copper alloy in the form of powder or flakes is mixed into the resin matrix material.
Vorteilhafterweise ist in das Matrixmaterial zumindest ein Faserwerkstoff in Form von Glas- und/oder Kohlefasern eingemischt.Advantageously, at least one fiber material in the form of glass and / or carbon fibers is mixed into the matrix material.
Das Matrixmaterial ist vorzugsweise Epoxidharz, welches die benötigten Anforderungen an Elastizität und Haltbarkeit für derartige Anwendungen erfüllt.The matrix material is preferably epoxy resin which meets the required elasticity and durability requirements for such applications.
Es sind somit Schaber mit reduziertem Reibbeiwert herstellbar. Durch die Reduzierung des Reibbeiwertes kann die benötigte Reibungsleistung für den Schaber in der Einheit, in welcher der Schaber eingesetzt wird, z.B. in der Trockengruppe, reduziert und somit die Dimensionierung und der Stromverbrauch der Antriebe der Einheit verringert werden.There are thus scrapers with reduced coefficient of friction produced. By reducing the coefficient of friction, the required frictional force for the scraper in the unit in which the scraper is used, e.g. in the drying section, thus reducing the sizing and power consumption of the unit's drives.
Die Verringerung des Reibbeiwertes wird insbesondere durch das Einmischen von Kupfer und/oder zumindest einer Kupfer-Legierung in Form von Pulvern oder Flocken in die Harzmatrix erreicht. Als Faserwerkstoff kommen insbesondere Glas- und/oder Kohlefasern in Betracht.The reduction of the coefficient of friction is achieved in particular by the mixing of copper and / or at least one copper alloy in the form of powders or flakes into the resin matrix. As a fiber material in particular glass and / or carbon fibers come into consideration.
Eine weitere Möglichkeit, den Reibwert zu verringern, besteht in der Substitution von Teilen der Epoxidharzmatrix durch silikonmodifiziertes Epoxidharz. Another way to reduce the coefficient of friction is the substitution of parts of the epoxy resin matrix by silicone-modified epoxy resin.

Claims

Patentansprüche claims
1. Schaber zur Beschaberung und/oder Reinigung, insbesondere zur Bescha- berung und/oder Reinigung von der Herstellung und/oder Behandlung einer Faserstoffbahn dienenden Einheiten und vorzugsweise zur Beschaberung und/oder Reinigung von Trockenzylindern, wobei der Schaber aus einem Verbundwerkstoff aus einem Harzmatrixmaterial mit darin eingebetteten Fasern besteht, dadurch g eken nze ich n et, dass in das Harzmatrixmaterial Kupfer und/oder wenigstens eine Kupferlegierung eingemischt ist, und/oder dass das Harzmatrixmaterial zumindest teilweise durch silikonmodifiziertes Epoxidharz substituiert ist.1. Scraper for Beschaberung and / or cleaning, in particular for Beschbberung and / or cleaning of the production and / or treatment of a fibrous web serving units and preferably for Beschaberung and / or cleaning of drying cylinders, wherein the scraper of a composite material of a resin matrix material With fibers embedded therein, it would be appreciated that copper and / or at least one copper alloy is mixed into the resin matrix material, and / or that the resin matrix material is at least partially substituted by silicone-modified epoxy resin.
2. Schaber nach Anspruch 1 , dadurch g eken nze ich n et, dass das Kupfer und/oder die wenigstens eine Kupferlegierung in Form von Pulver oder Flocken in das Harzmatrixmaterial eingemischt ist.2. scraper according to claim 1, characterized g eken nze I n et that the copper and / or the at least one copper alloy is mixed in the form of powder or flakes in the resin matrix material.
3. Schaber nach Anspruch 1 oder 2, dadurch g eken nze ich n et, dass die Fasern als Glas- und/oder Kohlefasern ausgebildet sind.3. scraper according to claim 1 or 2, characterized g eken nze I n et et that the fibers are formed as glass and / or carbon fibers.
4. Schaber nach einem der Ansprüche 1 bis 3, dadurch g eken nze ich n et, dass das Matrixmaterial Epoxidharz enthält. 4. scraper according to one of claims 1 to 3, characterized g eken nze I n et et that the matrix material contains epoxy resin.
EP09741979A 2008-05-06 2009-04-22 Scraper Withdrawn EP2283183A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008001574A DE102008001574A1 (en) 2008-05-06 2008-05-06 scraper
PCT/EP2009/054803 WO2009135761A1 (en) 2008-05-06 2009-04-22 Scraper

Publications (1)

Publication Number Publication Date
EP2283183A1 true EP2283183A1 (en) 2011-02-16

Family

ID=40790877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09741979A Withdrawn EP2283183A1 (en) 2008-05-06 2009-04-22 Scraper

Country Status (7)

Country Link
US (1) US20110099744A1 (en)
EP (1) EP2283183A1 (en)
KR (1) KR20110009211A (en)
CN (1) CN102016170A (en)
CA (1) CA2723305A1 (en)
DE (1) DE102008001574A1 (en)
WO (1) WO2009135761A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101413078B1 (en) 2011-12-30 2014-07-02 제일모직 주식회사 Positive type photosensitive resin composition
WO2014117373A1 (en) * 2013-01-31 2014-08-07 华为技术有限公司 Communication method, base station, and wireless access point
CN106028676A (en) * 2016-03-29 2016-10-12 苏州恩欧西智能科技有限公司 SMT printed circuit boardscraper

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030226579A1 (en) * 2002-06-06 2003-12-11 Carrier Gordon Eugene Serrated doctor blades
TWI293087B (en) * 2003-02-05 2008-02-01 Hitachi Chemical Co Ltd Friction material composition and friction material using thereof
DE102005002640A1 (en) * 2005-01-20 2006-07-27 Voith Paper Patent Gmbh doctor means
DE102005038652A1 (en) * 2005-08-16 2007-02-22 Voith Patent Gmbh Scraper device for paper machine
DE102005039018A1 (en) * 2005-08-18 2007-02-22 Voith Patent Gmbh scraper blade

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009135761A1 *

Also Published As

Publication number Publication date
KR20110009211A (en) 2011-01-27
US20110099744A1 (en) 2011-05-05
WO2009135761A1 (en) 2009-11-12
DE102008001574A1 (en) 2009-11-12
CA2723305A1 (en) 2009-11-12
CN102016170A (en) 2011-04-13

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