EP0679601B1 - Method for producing winding tubes with outer coating - Google Patents
Method for producing winding tubes with outer coating Download PDFInfo
- Publication number
- EP0679601B1 EP0679601B1 EP94105825A EP94105825A EP0679601B1 EP 0679601 B1 EP0679601 B1 EP 0679601B1 EP 94105825 A EP94105825 A EP 94105825A EP 94105825 A EP94105825 A EP 94105825A EP 0679601 B1 EP0679601 B1 EP 0679601B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- rubber
- core
- rubber tube
- sleeve
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/50—Methods of making reels, bobbins, cop tubes, or the like by working an unspecified material, or several materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/50—Storage means for webs, tapes, or filamentary material
- B65H2701/51—Cores or reels characterised by the material
- B65H2701/514—Elastic elements
Definitions
- the invention relates to a method for producing sleeves for winding web-like materials, in particular for winding base papers for photographic layers.
- Winding cores are generally made of paper or cardboard, as well as plastic, metal or wood.
- the materials hitherto used for coating the sleeves are fixed in the form of a tube, tape or film with the aid of an adhesive on the sleeve surface, or they can be applied by extrusion or foaming.
- the type of coating and its fixation on the sleeve surface is complex and complicates the disposal of the sleeves.
- DE-PS 644 166 describes the fitting of elastic hoses by means of suction or pressure on rollers.
- the elastic hose is pulled onto the roller for a short length by hand and closed at the other end by pulling it down onto a mouthpiece connected to a compressed air pump. Now the tube is inflated and pulled over the roller in the inflated state.
- a prerequisite for this procedure is a certain intrinsic strength, ie a certain thickness of the hose, since otherwise it can be damaged.
- a negative pressure is generated between a hollow body and the elastic hose inserted therein and the latter is thus sucked onto the inner wall of the mounting tube.
- a tube is inflated outside a hollow body, but attached to it, and the object to be covered with the tube is inserted into the expanded tube.
- a disadvantage of this procedure is that the hose is not fixed in the hollow body. Like the previously described embodiments, this procedure can only be carried out for hoses with a certain wall thickness.
- the object of the invention is therefore to propose a method for producing sleeves for winding sheet-like materials, the sleeves not causing any undesirable markings in the sheet-like materials and thus reducing the usual rejects to a minimum and which can moreover be disposed of without problems.
- This method is particularly suitable for winding base papers for photographic layers.
- a rubber tube is pressed with the help of a mounting tube on its inner wall by inflation with compressed air or similar pressure medium with a pressure of 0.2 to 0.5 bar, then the mounting tube is pushed onto the core sleeve with a rubber tube and after releasing the pressure, it lies tight against the core sleeve, with a pressure being exerted on the surface of the core sleeve by the rubber tube, which firmly holds the rubber tube in place.
- the protruding hose ends are cut off with the help of a heated knife, thus protecting the edges against tears.
- the core sleeve used for the production of the sleeves according to the invention is in particular a cardboard sleeve, the surface of which can be unprocessed.
- the ratio of the inner diameter of the rubber tube to the outer diameter of the core sleeve is 0.70: 1 to 0.95: 1.
- the thickness of the rubber tube ranges from 0.5 to 5 mm, in particular 1 to 3 mm.
- the material of the rubber hose is a rubber with a hardness of 20 to 50 shore, in particular 30 to 45 shore.
- the rubber material is an acid-resistant, plasticized rubber.
- the sleeves produced according to the invention reduce the amount of material scrap from the currently usual approximately 40 m per roll in the case of paper to less than 5 m.
- the advantage here is that the paper remaining on the sleeve is present in an amount that protects the rubber surface of the sleeve and secures it for transportation. In this way, such a sleeve can be reinserted after it has been freed from the remaining paper and cleaned.
- the cardboard sleeve used as the core sleeve also no longer needs a moisture barrier made of a wrapped aluminum foil and is therefore easily recyclable.
- the knife can cut the rubber tube from the core sleeve in the simplest way and both materials can be brought back into the circuit as materials.
- the adhesive tape used to fix the paper web edge can be removed from the rubber surface again without damaging the surface of the sleeve.
- a core sleeve 6 made of cardboard is to be given a uniform casing in the form of a rubber tube 1. This can be of different thicknesses, as can the core sleeves 6 of different lengths and diameters.
- the process begins by selecting a rubber tube 1 of a certain length and wall thickness, pulling it onto a short guide sleeve 3 at its end 2a, and shutting off the other end 2b by a clamp 4. Then, as can be seen from FIG. 2, this structure comprising a rubber hose 1 and a short guide sleeve 3 is inserted into an assembly tube 5. The guide sleeve 3 together with the end 2a of the rubber tube 1 located thereon is plugged onto one end 7a of the core sleeve 6 and the other end 7b of the core sleeve is closed with a stopper 8.
- the plug 8 has a bore 9 to which a compressed air line (not shown) is connected.
- the mounting tube 5 is dimensioned in its inner diameter so that the guide sleeve 3 and the rubber hose end 2a located thereon are movable therein with good play.
- the inner diameter of the guide sleeve 3 is also such that the end 7a of the core sleeve 6, which is inserted therein, has a certain play in the form of an annular gap so does not close tightly. If air is now pressed under pressure into the core sleeve 6 and the rubber tube 1 via the bore 9, the tube 1 inflates until it lies snugly on the inner surface of the mounting tube 5. Now the core sleeve 6 can be pushed into the rubber tube 1 by the guide sleeve 3 without difficulty and without using force.
- the protruding ends 11 and 12 of the rubber tube 1 are now cut off by means of a hot knife, and the winding tube according to the invention is thus completed. It then has the shape shown in FIG. 6.
Landscapes
- Storage Of Web-Like Or Filamentary Materials (AREA)
- Gasket Seals (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Hülsen zum Aufwickeln von bahnförmigen Materialien, insbesondere zum Aufwickeln von Basispapieren für fotografische Schichten.The invention relates to a method for producing sleeves for winding web-like materials, in particular for winding base papers for photographic layers.
Wickelhülsen werden im allgemeinen aus Papier oder Karton, sowie aus Kunststoff, Metall oder Holz gefertigt.Winding cores are generally made of paper or cardboard, as well as plastic, metal or wood.
Folgende Anforderungen werden an die Hülsen zum Aufwickeln von fotografischen Basispapieren, Papieren oder Folien gestellt:
- Die Hülse darf sich durch das Papiergewicht nicht durchbiegen.
- Der Hülsenquerschnitt darf sich während des Auf- oder Abrollvorganges nicht verformen.
- Die Hülse muß eine definierte Feuchtigkeit aufweisen und ggf. eine Feuchtigkeitssperre aus Metall enthalten, um einen Feuchtigkeitsaustausch zwischen Hülse und Papier zu vermeiden.
- Die Hülse muß abriebfest sein, d. h. bei der Fixierung des bahnförmigen Materials mit Hilfe eines Klebebandes und anschließender Entfernung des Bandes darf die Hülsenoberfläche nicht beschädigt werden.
- Die Hülsenoberfläche muß gleichmäßig sein und keine Markierungen aufweisen.
- Die beschichteten Hülsen dürfen nur in geringem Umfang statisch aufladbar sein, damit eine unerwünschte Verschmutzung des Bahnmaterials durch die von der Hülse angezogene Staubpartikel vermieden wird.
- Die Beschichtung der Hülse muß fotochemisch verträglich sein, falls das Bahnmaterial ein fotografisches Basispapier ist.
- The paper weight must not cause the sleeve to bend.
- The sleeve cross-section must not deform during the winding or unwinding process.
- The sleeve must have a defined moisture content and, if necessary, contain a metal moisture barrier to prevent moisture exchange between the sleeve and the paper.
- The sleeve must be resistant to abrasion, ie the sleeve surface must not be damaged when the sheet material is fixed with the aid of an adhesive tape and the tape is subsequently removed.
- The sleeve surface must be even and have no markings.
- The coated sleeves may only be statically chargeable to a small extent, so that undesirable contamination of the web material by the dust particles attracted by the sleeve is avoided.
- The coating of the sleeve must be photochemically compatible if the web material is a photographic base paper.
Infolge einer bestimmten Wickelstärke herrscht innerhalb der Rolle nahe der Hülse ein starker radialer Druck. Dieser Druck führt zum Durchdrücken von Unebenheiten auf der Materialbahn, wie der Bahnkante und des zur Fixierung der Bahn verwendeten Klebebands. Dadurch entstehen deutlich sichtbare, unerwünschte Markierungen, die sich bei Papieren auf den letzten 20 bis 40 m der Bahn abzeichnen. Dieses Material ist als Ausschuß zu bewerten.Due to a certain winding thickness, there is a strong radial pressure inside the roll near the sleeve. This pressure leads to the pressing of unevenness on the material web, such as the web edge and the adhesive tape used to fix the web. This creates clearly visible, undesirable markings, which can be seen on paper on the last 20 to 40 m of the web. This material is to be assessed as a committee.
Es wurde versucht, dem Problem der Abdrücke und Markierungen durch die Herstellung besonders harter, geschliffener Hülsen entgegenzuwirken. Danach treten zwar die durch die Unebenheiten der Hülsenoberfläche bedingten Markierungen nicht mehr auf, jedoch lassen sich die durch die Bahnkante und die Bahnfixierung hervorgerufenen Markierungen nicht vermeiden.Attempts have been made to counteract the problem of marks and marks by producing particularly hard, ground sleeves. After that, the markings caused by the unevenness of the sleeve surface no longer occur, but the markings caused by the web edge and the web fixation cannot be avoided.
Ein anderer Versuch, dieses Problem zu lösen, ist der in der DE-OS 3610557, die dem Oberbegriff des Anspruchs 1 entspricht, beschriebene Einsatz von Hülsen, welche mit einem verformbaren, hauptsächlich geschäumten Material beschichtet sind. Dadurch lassen sich die unerwünschten Markierungen und der damit verbundene Ausschuß auf etwa 5 bis 10 m reduzieren. Nachteilig an diesen Hülsen ist, daß sie aufgrund ihres Verbundstoffcharakters nur schlecht entsorgt werden können und die Herstellung aufwendiger ist.Another attempt to solve this problem is the use of sleeves described in DE-OS 3610557, which corresponds to the preamble of claim 1, which sleeves are coated with a deformable, mainly foamed material. This allows the Reduce unwanted markings and the associated rejects to about 5 to 10 m. The disadvantage of these sleeves is that they are difficult to dispose of due to their composite nature and the production is more complex.
Die zur Beschichtung der Hülsen bis jetzt verwendeten Materialien werden in Form eines Schlauches, Bandes oder einer Folie mit Hilfe eines Klebers auf der Hülsenoberfläche fixiert, oder sie können durch Extrusion oder Aufschäumen aufgebracht werden. Die Art der Beschichtung und ihrer Fixierung auf der Hülsenoberfläche ist aufwendig und erschwert die Entsorgung der Hülsen.The materials hitherto used for coating the sleeves are fixed in the form of a tube, tape or film with the aid of an adhesive on the sleeve surface, or they can be applied by extrusion or foaming. The type of coating and its fixation on the sleeve surface is complex and complicates the disposal of the sleeves.
Die DE-PS 644 166 beschreibt das Aufziehen von elastischen Schläuchen mittels Saug- oder Druckwirkung auf Walzen. Gemäß einer ersten Ausführungsform wird der elastische Schlauch ein kurzes Stück von Hand auf die Walze aufgezogen und am anderen Ende durch Aufziehen von Hand auf ein mit einer Druckluftpumpe verbundenes Mundstück verschlossen. Nun wird der Schlauch aufgepumpt und in aufgepumptem Zustand über die Walze gezogen. Voraussetzung für diese Verfahrensweise ist eine gewisse Eigenfestigkeit, d. h. eine bestimmte Dicke des Schlauchs, da es ansonsten zu Beschädigungen desselben kommen kann. Gemäß einer zweiten Ausführungsform wird zwischen einem Hohlkörper und dem in diesen eingeführten elastischen Schlauch ein Unterdruck erzeugt und letzterer somit an die Innenwand des Montagerohrs gesaugt. Die Weitung und Fixierung des Schlauchs mit Unterdruck erfordert einen hohen Aufwand an Abdichtung zwischen Schlauch und Montagerohr. Nachteilig ist ferner, daß der zu überziehende Gegenstand nun nicht mehr auf einem Luftpolster gleitend in den Hohlkörper eingeführt werden kann. Jedes Anstoßen der Walze am Gummischlauch kann zu Beschädigungen führen, so daß diese Verfahrensweise nicht empfehlenswert ist.DE-PS 644 166 describes the fitting of elastic hoses by means of suction or pressure on rollers. According to a first embodiment, the elastic hose is pulled onto the roller for a short length by hand and closed at the other end by pulling it down onto a mouthpiece connected to a compressed air pump. Now the tube is inflated and pulled over the roller in the inflated state. A prerequisite for this procedure is a certain intrinsic strength, ie a certain thickness of the hose, since otherwise it can be damaged. According to a second embodiment, a negative pressure is generated between a hollow body and the elastic hose inserted therein and the latter is thus sucked onto the inner wall of the mounting tube. The widening and fixing of the hose with negative pressure requires a great deal of effort to seal between the hose and the assembly pipe. Another disadvantage is that the object to be coated is no longer sliding on an air cushion can be inserted into the hollow body. Any impact of the roller on the rubber hose can cause damage, so this procedure is not recommended.
Nach der DE-PS 645 917 wird ein sich außerhalb eines Hohlkörpers, jedoch an diesem befestigter Schlauch aufgeblasen und der mit dem Schlauch zu überziehende Gegenstand in den aufgeweiteten Schlauch eingeführt. Nachteilig bei dieser Verfahrensweise ist, daß der Schlauch nicht in dem Hohlkörper fixiert ist. Wie die zuvor beschriebenen Ausführungsformen ist auch diese Verfahrensweise nur bei Schläuchen mit einer gewissen Wandstärke durchführbar.According to DE-PS 645 917, a tube is inflated outside a hollow body, but attached to it, and the object to be covered with the tube is inserted into the expanded tube. A disadvantage of this procedure is that the hose is not fixed in the hollow body. Like the previously described embodiments, this procedure can only be carried out for hoses with a certain wall thickness.
Die Aufgabe der Erfindung ist es daher, ein Verfahren zur Herstellung von Hülsen zum Aufwickeln von bahnförmigen Materialien vorzuschlagen, wobei die Hülsen keine unerwünschten Markierungen in den bahnförmigen Materialien verursachen und so den üblichen Ausschuß auf ein Minimum reduzieren und die sich darüber hinaus problemlos entsorgen lassen.The object of the invention is therefore to propose a method for producing sleeves for winding sheet-like materials, the sleeves not causing any undesirable markings in the sheet-like materials and thus reducing the usual rejects to a minimum and which can moreover be disposed of without problems.
Gelöst wird diese Aufgabe durch die im Anspruch 1 angegebenen Maßnahmen. In den Unteransprüchen sind vorteilhafte Ausgestaltungen des Verfahrens nach Anspruch 1 gekennzeichnet.This problem is solved by the measures specified in claim 1. Advantageous embodiments of the method according to claim 1 are characterized in the subclaims.
Dieses Verfahren eignet sich insbesondere zum Aufwickeln von Basispapieren für fotografische Schichten.This method is particularly suitable for winding base papers for photographic layers.
Ein Gummischlauch wird mit Hilfe eines Montagerohrs an dessen Innenwandung durch Aufblasen mit Druckluft oder dergleichen Druckmittel mit einem Druck von 0,2 bis 0,5 bar angepreßt, dann wird das Montagerohr mit Gummischlauch auf die Kernhülse geschoben und nach Ablassen des Drucks legt es sich stramm gegen die Kernhülse, wobei von dem Gummischlauch auf die Oberfläche der Kernhülse ein Druck ausgeübt wird, der den Gummischlauch unverrückbar festhält.A rubber tube is pressed with the help of a mounting tube on its inner wall by inflation with compressed air or similar pressure medium with a pressure of 0.2 to 0.5 bar, then the mounting tube is pushed onto the core sleeve with a rubber tube and after releasing the pressure, it lies tight against the core sleeve, with a pressure being exerted on the surface of the core sleeve by the rubber tube, which firmly holds the rubber tube in place.
Nach Aufbringen des Gummischlauches werden die überstehenden Schlauchenden mit Hilfe eines beheizten Messers abgeschnitten und somit die Kanten gegen Einrisse geschützt.After applying the rubber hose, the protruding hose ends are cut off with the help of a heated knife, thus protecting the edges against tears.
Die für die erfindungsgemäße Herstellung der Hülsen eingesetzte Kernhülse ist insbesondere eine Papphülse, deren Oberfläche unbearbeitet sein kann.The core sleeve used for the production of the sleeves according to the invention is in particular a cardboard sleeve, the surface of which can be unprocessed.
Das Verhältnis des Innendurchmessers des Gummischlauches zum Außendurchmesser der Kernhülse beträgt 0,70 : 1 bis 0,95 : 1.The ratio of the inner diameter of the rubber tube to the outer diameter of the core sleeve is 0.70: 1 to 0.95: 1.
Die Dicke des Gummischlauches bewegt sich im Bereich von 0,5 bis 5 mm, insbesondere 1 bis 3 mm. Das Material des Gummischlauches ist ein Gummi mit der Härte von 20 bis 50 shore, insbesondere 30 bis 45 shore.The thickness of the rubber tube ranges from 0.5 to 5 mm, in particular 1 to 3 mm. The material of the rubber hose is a rubber with a hardness of 20 to 50 shore, in particular 30 to 45 shore.
In einer besonderern Ausgestaltung der Erfindung ist das Gummimaterial ein säureresistentes, weichmacherhaltiges Gummi.In a special embodiment of the invention, the rubber material is an acid-resistant, plasticized rubber.
Überraschenderweise hat sich herausgestellt, daß sich durch die erfindungsgemäß hergestellten Hülsen der Anfall an Materialausschuß von den derzeit üblichen etwa 40 m pro Rolle im Falle von Papier auf weniger als 5 m reduziert. Der Vorteil dabei ist, daß das auf der Hülse verbliebene Papier in einer Menge vorhanden ist, die die Gummioberfläche der Hülse schützt und für den Transport sichert. Auf diese Weise kann eine solche Hülse, nachdem sie von dem restlichen Papier befreit und gereinigt wurde, wieder eingesetzt werden.Surprisingly, it has been found that the sleeves produced according to the invention reduce the amount of material scrap from the currently usual approximately 40 m per roll in the case of paper to less than 5 m. The advantage here is that the paper remaining on the sleeve is present in an amount that protects the rubber surface of the sleeve and secures it for transportation. In this way, such a sleeve can be reinserted after it has been freed from the remaining paper and cleaned.
Die als Kernhülse eingesetzte Papphülse benötigt außerdem keine Feuchtigkeitssperre aus einer eingewickelten Aluminiumfolie mehr und ist somit problemlos recyclierbar.The cardboard sleeve used as the core sleeve also no longer needs a moisture barrier made of a wrapped aluminum foil and is therefore easily recyclable.
Da der Gummibelag auf der Oberfläche der Kernhülse nur aufgrund seiner Eigenspannung haftet, entsteht kein Verbundwerkstoff. Bei einem Defekt der Hülse kann durch einen Messerschnitt auf einfachste Weise der Gummischlauch von der Kernhülse getrennt und beide Materialien wieder als Werkstoffe in den Kreislauf gebracht werden.Since the rubber coating only adheres to the surface of the core sleeve due to its inherent tension, no composite material is created. If the sleeve is defective, the knife can cut the rubber tube from the core sleeve in the simplest way and both materials can be brought back into the circuit as materials.
Das zur Fixierung der Papierbahnkante verwendete Klebeband kann von der Gummioberfläche ohne Oberflächenbeschädigung der Hülse wieder entfernt werden.The adhesive tape used to fix the paper web edge can be removed from the rubber surface again without damaging the surface of the sleeve.
Die Erfindung wird nun anhand eines Ausführungsbeispiels, welches in der Zeichnung dargestellt ist, näher beschrieben.The invention will now be described in more detail using an exemplary embodiment which is illustrated in the drawing.
In der Zeichnung stellen dar:
- Fig. 1 - 5
- das stufenweise Herstellungsverfahren der erfindunggemäßen Hülse und
- Fig. 6
- die fertige Hülse zum Aufwickeln von bahnförmigen Materialien
- 1 - 5
- the gradual manufacturing process of the sleeve according to the invention and
- Fig. 6
- the finished core for winding web-shaped materials
Eine aus Pappe bestehende Kernhülse 6 soll eine einheitliche Ummantelung in Form eines Gummischlauchs 1 erhalten. Dieser kann von unterschiedlicher Dicke sein wie auch die Kernhülsen 6 von unterschiedlicher Länge und Durchmesser sein können.A core sleeve 6 made of cardboard is to be given a uniform casing in the form of a rubber tube 1. This can be of different thicknesses, as can the core sleeves 6 of different lengths and diameters.
Das Verfahren beginnt damit, daß man einen Gummischlauch 1 bestimmter Länge und Wandstärke auswählt, an seinem Ende 2a auf eine kurze Führungshülse 3 aufzieht, und das andere Ende 2b durch eine Klemme 4 absperrt. Sodann wird, wie aus Fig. 2 ersichtlich, dieses Gebilde aus Gummischlauch 1 und kurzer Führungshülse 3 in ein Montagerohr 5 eingeführt. Die Führungshülse 3 wird mitsamt dem darauf befindlichen Ende 2a des Gummischlauches 1 auf das eine Ende 7a der Kernhülse 6 gesteckt und das andere Ende 7b der Kernhülse mit einem Stopfen 8 verschlossen. Der Stopfen 8 hat eine Bohrung 9, an die eine Druckluftleitung (nicht dargestellt) angeschlossen ist.The process begins by selecting a rubber tube 1 of a certain length and wall thickness, pulling it onto a
Das Montagerohr 5 ist in seinem Innendurchmesser so bemessen, daß die Führungshülse 3 und das darauf befindliche Gummischlauchende 2a mit gutem Spiel darin beweglich sind. Auch die Führungshülse 3 ist in ihrem Innendurchmesser so bemessen, daß das Ende 7a der Kernhülse 6, welches darin steckt, ein gewisses Spiel in Form eines Ringspaltes aufweist also nicht dicht abschließt. Wenn nun über die Bohrung 9 Luft unter Druck in die Kernhülse 6 und den Gummischlauch 1 hineingedrückt wird, so bläht sich der Schlauch 1 auf, bis er satt auf der inneren Oberfläche des Montagerohres 5 aufliegt. Nun kann die Kernhülse 6 durch die Führungshülse 3 ohne Schwierigkeit und ohne Kraftanwendung in den Gummischlauch 1 hineingeschoben werden. Dabei dient die durch den engen Ringspalt 10 zwischen der Führungshülse 3 und der Kernhülse 6 entweichende Luft quasi als Lager, so daß eine Reibung zwischen der inneren Oberfläche der Kernhülse 6 nicht vorhanden ist und die Kernhülse die in Fig. 4 dargestellte Lage eingenomen hat. Jetzt wird die Drucklufteinleitung abgestellt und die Klemme 4 entfernt. Der Gummischlauch 1 versucht nun, seine ursprüngliche Dimension wieder einzunehmen und legt sich dabei fest um die äußere Oberfläche der Kernhülse 6 und übt dabei einen einstellbaren Anspreßdruck aus. Gleichzeitig trennt sich der Gummischlauch 1 von der inneren Oberfläche des Montagerohres 5. Nach Abnahme der Klemme 4 und Entfernen der Führungshülse 3 mitsamt dem Stopfen 8 zeigt sich das in Fig. 5 dargestellte Gebilde aus der Kernhülse 6 aus Pappe mit dem daraufliegenden Gummischlauch 1.The mounting
Die überstehenden Enden 11 und 12 des Gummischlauchs 1 werden nun vermittels eines heißen Messers abgeschnitten und damit ist die Wickelhülse gemäß der Erfindung fertiggestellt. Sie hat dann die in Fig. 6 dargestellte Gestalt.The protruding ends 11 and 12 of the rubber tube 1 are now cut off by means of a hot knife, and the winding tube according to the invention is thus completed. It then has the shape shown in FIG. 6.
Claims (8)
- A process for the production of core rolls for the winding of sheet materials whereby the core rolls consist of a core casing and an elastically deformable material thereon, characterized therein, thatthe external coating in the form of a rubber tube (1) is positioned on one end (2a) on a short guide casing (3) and the other end (2b) is blocked off,the guide casing (3) is positioned on the core casing (6) whereby a narrow annular aperture (10) between both remains,the subject matter consisting of rubber tube (1) and short guide casing (3) is inserted into a mounting tube (5) and the other end (7b) of the core casing is closed with a plug (8) having an axial bore (9),and that subsequently through the bore (9) and core casing (6) into the rubber tube (1) pressurized fluid or similar is introduced to deform the rubber tube (1) so as to press the deformable tube against the internal wall of the mounting tube (5) and that the core casing (6) is slided through the guide casing (3) into the rubber tube and subsequently relieving the pressure.
- The process according to claim 1, characterized therein that the core casing is paper board.
- The process according to claim 1 or 2, characterized therein that the thickness of said rubber tube is 0.5 to 5 mm.
- The process according to claim 3, characterized therein that the thickness of the rubber tube is 1 to 3 mm.
- The process according to any of claims 1 to 4, characterized therein that the material of the rubber tube is a rubber with a hardness of 20 to 50 shore.
- The process according to claim 6, characterized therein that the material of the rubber tube is a rubber with a hardness of 30 to 45 shore.
- The process according to any of claims 1 to 6, characterized therein that the material of the rubber tube is an acid resistant rubber which contains a softening agent.
- The process according to any of claims 1 to 7, characterized therein that the ends of the deformable tube projecting beyond the core casing when said tube is adhered to the core casing are cut off with a hot blade.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4244243A DE4244243C1 (en) | 1992-12-24 | 1992-12-24 | Production process for winding spools of photographic paper - fits combined rubber hose and guide sleeve in assembly tube followed by introduction of compressed air to press hose against inner wall before pushing in core sleeve |
| EP94105825A EP0679601B1 (en) | 1992-12-24 | 1994-04-15 | Method for producing winding tubes with outer coating |
| ES94105825T ES2104222T3 (en) | 1992-12-24 | 1994-04-15 | PROCEDURE FOR THE MANUFACTURE OF ROLLER SLEEVES WITH EXTERIOR COATING. |
| AT94105825T ATE153984T1 (en) | 1992-12-24 | 1994-04-15 | METHOD FOR PRODUCING WINDING SLEEVES WITH OUTER COVERING |
| DK94105825.7T DK0679601T3 (en) | 1992-12-24 | 1994-04-15 | Process for the manufacture of exterior coating wrap casings |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4244243A DE4244243C1 (en) | 1992-12-24 | 1992-12-24 | Production process for winding spools of photographic paper - fits combined rubber hose and guide sleeve in assembly tube followed by introduction of compressed air to press hose against inner wall before pushing in core sleeve |
| EP94105825A EP0679601B1 (en) | 1992-12-24 | 1994-04-15 | Method for producing winding tubes with outer coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0679601A1 EP0679601A1 (en) | 1995-11-02 |
| EP0679601B1 true EP0679601B1 (en) | 1997-06-04 |
Family
ID=25921829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94105825A Expired - Lifetime EP0679601B1 (en) | 1992-12-24 | 1994-04-15 | Method for producing winding tubes with outer coating |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0679601B1 (en) |
| AT (1) | ATE153984T1 (en) |
| DE (1) | DE4244243C1 (en) |
| DK (1) | DK0679601T3 (en) |
| ES (1) | ES2104222T3 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE644166C (en) * | 1934-07-25 | 1937-04-26 | Hugo Rothe | Method for applying and removing elastic coatings from cylindrical or prismatic objects, in particular rollers |
| DE645917C (en) * | 1936-04-16 | 1937-06-07 | Hugo Rothe | Method for applying and removing elastic coatings from cylindrical or prismatic objects, in particular rollers |
| LU46493A1 (en) * | 1963-08-23 | 1972-01-01 | ||
| IL23238A (en) * | 1964-05-07 | 1968-09-26 | Canadian Ind | Textile tube |
| GB1176050A (en) * | 1967-01-03 | 1970-01-01 | Bemberg Spa | A Method and an Apparatus for the Automatic Replacement of Plastic Material Sheaths. |
| DE3610557C2 (en) * | 1986-03-27 | 1994-06-16 | Schoeller Felix Jun Papier | Winding core for web-shaped base paper for coating with photographic emulsions |
-
1992
- 1992-12-24 DE DE4244243A patent/DE4244243C1/en not_active Expired - Fee Related
-
1994
- 1994-04-15 EP EP94105825A patent/EP0679601B1/en not_active Expired - Lifetime
- 1994-04-15 ES ES94105825T patent/ES2104222T3/en not_active Expired - Lifetime
- 1994-04-15 DK DK94105825.7T patent/DK0679601T3/en active
- 1994-04-15 AT AT94105825T patent/ATE153984T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE153984T1 (en) | 1997-06-15 |
| ES2104222T3 (en) | 1997-10-01 |
| DE4244243C1 (en) | 1994-06-01 |
| DK0679601T3 (en) | 1997-12-22 |
| EP0679601A1 (en) | 1995-11-02 |
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