EP2562300A1 - Stripping blade - Google Patents

Stripping blade Download PDF

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Publication number
EP2562300A1
EP2562300A1 EP12181330A EP12181330A EP2562300A1 EP 2562300 A1 EP2562300 A1 EP 2562300A1 EP 12181330 A EP12181330 A EP 12181330A EP 12181330 A EP12181330 A EP 12181330A EP 2562300 A1 EP2562300 A1 EP 2562300A1
Authority
EP
European Patent Office
Prior art keywords
doctor blade
machine
forming
grooves
blade according
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Withdrawn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
EP12181330A
Other languages
German (de)
French (fr)
Inventor
Hubert Hergeth
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2562300A1 publication Critical patent/EP2562300A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D01G15/465—Doffing arrangements for removing fibres using, or cooperating with, pneumatic means
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above

Definitions

  • the invention relates to a doctor blade, as it is used in nonwoven imaging machines that form a web aerodynamically.
  • the invention would like to avoid the formation of bats in a simple manner.
  • the knife surface is not made smooth, but provided with a structure.
  • the structure forms the smallest turbulence, which prevents it from sticking.
  • the structure can be done by grooves, elevations such as bars or edges or by applying a coating.
  • the coating creates a structured surface, similar to an orange peel.
  • the structure can be smaller than 1 mm on the surface.
  • the structured surface can be generated selectively and / or untargeted.
  • grooves are a group of groove-shaped depressions which are not deliberately introduced into the surface of the knife.
  • the structuring of the surface is carried out by milling, grooves and / or elevations targeted.
  • the depth or height of the grooves, milled grooves, grooves or elevations is preferably less than 1 mm.
  • the structured surface of the doctor blade prevents the formation of batt and thus the bad web image caused thereby. That is, the doctor blade with the structured surface allows to easily improve the nonwoven image of an aerodynamically produced nonwoven fabric.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Stripper knife of a machine aerodynamically forming a nonwoven fabric, comprises a structure at least on one of the larger side of the stripper knife facing towards the fibers. An independent claim is also included for the nonwoven fabric produced by the machine forming the aerodynamic nonwoven fabric, where the fabric-forming machine comprises the above mentioned stripper knife.

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die Erfindung betrifft ein Abstreifmesser, wie es bei Vliesbildemaschinen verwendet wird, die ein Vlies aerodynamisch bilden.The invention relates to a doctor blade, as it is used in nonwoven imaging machines that form a web aerodynamically.

STAND DER TECHNIKSTATE OF THE ART

Solche Maschinen sind seit ca. 60 Jahren bekannt und werden z.B. in der DE 103 29 648 Fig. 1 Nr. 8 beschrieben. Einige Fasern (z.B. gebleichte Baumwolle oder spezielle synthetische Fasern) bleiben jedoch an der Messerfläche hängen und bilden Batzen. Diese Batzen werden bis zu Taubenei groß und fallen dann auf das Vlies und ergeben ein schlechtes Vliesbild. Zur Vermeidung dieser Batzen schlagen die Gebrauchsanleitungen der Hersteller dieser Maschinen naheliegend vor, die Messer zu polieren, um die Oberfläche glatter zu gestalten. Dies führt aber nicht zu der Vermeidung von Batzen.Such machines have been known for about 60 years and are used eg in the DE 103 29 648 Fig. 1 no. 8 described. However, some fibers (eg bleached cotton or special synthetic fibers) will stick to the blade surface and form chunks. These bats grow up to pigeons and then fall on the fleece and give a bad fleece image. To avoid these chords, the manuals of the manufacturers of these machines suggest to polish the knives to make the surface smoother. However, this does not lead to the avoidance of chunks.

ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION

Die Erfindung möchte auf einfache Weise die Batzenbildung vermeiden.The invention would like to avoid the formation of bats in a simple manner.

Erfindungsgemäß geschieht dies genau durch eine Vorrichtung, die dem Gegenteil des Stands der Technik entspricht. Die Messeroberfläche wird nicht glatt, sondern mit einer Struktur versehen ausgeführt. Durch die Struktur bilden sich kleinste Turbulenzen, die ein Anhaften verhindern.According to the invention, this is done exactly by a device that corresponds to the opposite of the prior art. The knife surface is not made smooth, but provided with a structure. The structure forms the smallest turbulence, which prevents it from sticking.

Die Struktur kann durch Riefen, Erhebungen wie Leisten oder Kanten oder durch das Aufbringen einer Beschichtung erfolgen. Die Beschichtung erzeugt eine strukturierte Oberfläche, ähnlich einer Orangenhaut. Die Struktur kann kleiner als 1 mm auf der Oberfläche sein.The structure can be done by grooves, elevations such as bars or edges or by applying a coating. The coating creates a structured surface, similar to an orange peel. The structure can be smaller than 1 mm on the surface.

Die strukturierte Oberfläche kann gezielt und/oder ungezielt erzeugt werden. So handelt es sich bei Riefen um eine Schar rillenförmiger Vertiefungen, die nicht gezielt in die Oberfläche der Messers eingebracht werden. Hingegen erfolgt die Strukturierung der Oberfläche durch Einfräsungen, Nuten und/oder Erhebungen gezielt. Die Tiefe bzw. Höhe der Riefen, Einfräsungen, Nuten oder Erhebungen beträgt bevorzugt weniger als 1 mm.The structured surface can be generated selectively and / or untargeted. For example, grooves are a group of groove-shaped depressions which are not deliberately introduced into the surface of the knife. On the other hand, the structuring of the surface is carried out by milling, grooves and / or elevations targeted. The depth or height of the grooves, milled grooves, grooves or elevations is preferably less than 1 mm.

In jedem Fall beugt die strukturierte Oberfläche des Abstreifmessers der Batzenbildung und somit dem dadurch verursachten schlechten Vliesbild vor. Das heißt, das Abstreifmesser mit der strukturierten Oberfläche ermöglicht auf einfache Weise das Vliesbild eines aerodynamisch hergestellten Vlieses zu verbessern.In any case, the structured surface of the doctor blade prevents the formation of batt and thus the bad web image caused thereby. That is, the doctor blade with the structured surface allows to easily improve the nonwoven image of an aerodynamically produced nonwoven fabric.

Claims (6)

Abstreifmesser an einer aerodynamisch ein Vlies bildenden Maschine, dadurch gekennzeichnet,
dass mindestens die größte der den Fasern zugewandten Seite des Abstreifmessers mit einer Struktur versehen ist.Scraper blade on a machine forming an aerodynamic web, characterized
that at least the largest of the fibers facing the side of the Abstreifmessers is provided with a structure. Abstreifmesser nach Anspruch 1, dadurch gekennzeichnet,
dass die Struktur durch Riefen, Einfräsungen, Nuten oder Erhebungen wie Leisten oder Kanten erzeugt wird.A doctor blade according to claim 1, characterized
that the structure is created by grooves, milled grooves, grooves or elevations such as bars or edges. Abstreifmesser nach Anspruch 1, dadurch gekennzeichnet,
dass die Struktur durch mindestens eine Beschichtung erzeugt wird.A doctor blade according to claim 1, characterized
that the structure is produced by at least one coating. Abstreifmesser nach Anspruch 1 oder 3, dadurch gekennzeichnet,
dass die Struktur ähnlich der Haut einer Orange ausgeführt wird.A doctor blade according to claim 1 or 3, characterized
that the structure is similar to the skin of an orange. Abstreifmesser nach Anspruch 1, dadurch gekennzeichnet,
dass die Struktur als kleine Schleifriefen ausgeführt ist.A doctor blade according to claim 1, characterized
that the structure is designed as a small sanding marks. Vlies, das mit einer Maschine, die aerodynamisch ein Vlies bildet, hergestellt ist, wobei die vliesbildende Maschine ein Abstreifmesser nach einem der Ansprüche 1 bis 5 aufweist.A nonwoven fabric made with a machine aerodynamically forming a web, the web forming machine comprising a doctor blade according to any one of claims 1 to 5.
EP12181330A 2011-08-24 2012-08-22 Stripping blade Withdrawn EP2562300A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011111770 2011-08-24

Publications (1)

Publication Number Publication Date
EP2562300A1 true EP2562300A1 (en) 2013-02-27

Family

ID=46934430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12181330A Withdrawn EP2562300A1 (en) 2011-08-24 2012-08-22 Stripping blade

Country Status (2)

Country Link
EP (1) EP2562300A1 (en)
CN (1) CN102953233B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5517726A (en) * 1992-08-17 1996-05-21 Beier; Scott B. High strength nonwoven batting
US5930871A (en) * 1998-07-09 1999-08-03 John D. Hollingsworth On Wheels, Inc. Air doffing system for a textile processing machine
DE10329648A1 (en) 2003-07-01 2005-01-27 Oskar Dilo Maschinenfabrik Kg Device for web formation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942305A (en) * 1958-07-24 1960-06-28 John D Hollingsworth Comb blades
CN2151159Y (en) * 1993-03-19 1993-12-29 张学通 Rotary dust cleaner for scutcher
DE19515393B4 (en) * 1995-04-26 2004-01-15 Man Roland Druckmaschinen Ag Surface structure carrying substrates, preferably for printing press cylinders or their elevators
FI113677B (en) * 2002-10-22 2004-05-31 Pikoblade Oy Wear-resistant coating sheet or equivalent sheet for treating a paper web
EP1878565A1 (en) * 2006-07-13 2008-01-16 BTG Eclépens S.A. Creping blade

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5517726A (en) * 1992-08-17 1996-05-21 Beier; Scott B. High strength nonwoven batting
US5930871A (en) * 1998-07-09 1999-08-03 John D. Hollingsworth On Wheels, Inc. Air doffing system for a textile processing machine
DE10329648A1 (en) 2003-07-01 2005-01-27 Oskar Dilo Maschinenfabrik Kg Device for web formation

Also Published As

Publication number Publication date
CN102953233A (en) 2013-03-06
CN102953233B (en) 2019-01-08

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