EP1492647B1 - Procédé de realisation de rouleaux jumbo pour produire des materiaux abrasifs - Google Patents

Procédé de realisation de rouleaux jumbo pour produire des materiaux abrasifs Download PDF

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Publication number
EP1492647B1
EP1492647B1 EP03744854A EP03744854A EP1492647B1 EP 1492647 B1 EP1492647 B1 EP 1492647B1 EP 03744854 A EP03744854 A EP 03744854A EP 03744854 A EP03744854 A EP 03744854A EP 1492647 B1 EP1492647 B1 EP 1492647B1
Authority
EP
European Patent Office
Prior art keywords
abrasive belt
process according
heating apparatus
jumbo
abrasive
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.)
Revoked
Application number
EP03744854A
Other languages
German (de)
English (en)
Other versions
EP1492647A1 (fr
Inventor
Heinz-Jürgen DERN
Claudio Lesizza
Guglielmo Tonin
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.)
IMT Srl
Hexion GmbH
Original Assignee
Hexion Speciality Chemicals GmbH
IMT Srl
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7969428&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1492647(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hexion Speciality Chemicals GmbH, IMT Srl filed Critical Hexion Speciality Chemicals GmbH
Publication of EP1492647A1 publication Critical patent/EP1492647A1/fr
Application granted granted Critical
Publication of EP1492647B1 publication Critical patent/EP1492647B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs

Definitions

  • the invention relates to a method for producing jumbo rolls in the production of coated abrasives.
  • an endless belt of carrier material is continuously provided in several successive process steps with a base binder, with abrasive material and at least one capping agent.
  • a base binder with abrasive material and at least one capping agent.
  • drying or hardening of the thermosetting binder takes place.
  • the coated, dried and pre-cured, tack-free abrasive belt is wound up on a take-up device into a so-called jumbo roll (compare Gardziella, Pilato, Knop, Phenolic Resins, 2nd edition (2000), Springer Verlag, page 345).
  • thermosetting binder To cure the thermosetting binder, the jumbo roll is placed in an oven and heated there to a temperature above the curing temperature of the thermosetting binder, usually, when using phenolic resins as a binder to a temperature> 130 ° C.
  • the abrasive belt is already heated to an elevated temperature in the course of its production, in particular during the pre-curing of the binder in the so-called cover-bonding furnace, this thermal energy passes on the way from the cover-bonding furnace to the take-up device by braking and guide rollers and the path through the cold Indoor air largely lost. It must be fed again in the curing oven for the jumbo roll.
  • EP 0 552 698 A2 describes a conventional process for the production of abrasives.
  • a make coat is applied, which is cured only before and after the application of the abrasive material.
  • the application of the second bonding layer size coat
  • the finished abrasive is wound onto a jumbo roll.
  • DE-OS-2146 369 describes a process for producing flexible abrasive structures (webs, tapes, rolls) in which at least one bonding layer is subjected to steam during drying or during curing. It is disclosed the possibility that after the application of the second bonding layer, it is dried in the planned state. The resin can then be placed on the roll, e.g. Cured at elevated temperatures.
  • No. 4,183,847 describes the production of an abrasive product in which special layers are applied to special textiles. Information on curing was not made.
  • the method consists in that the winding device for the precured grinding belt is preceded or connected directly to a heating device, with which the grinding belt is heated in its entire width to a uniform temperature. Conveniently, this temperature is preferably at or just below the desired curing temperature of the thermosetting binder.
  • a heating device all devices can be used that provide the highest possible and controllable energy density to provide the heating of the abrasive belt in the shortest possible time and on the shortest possible path length.
  • Such heaters are e.g. Emitters, in particular heat or infrared radiators, which are directed so that the abrasive belt is irradiated evenly shortly before reaching the take-up or each on the outer web on the take-up in a certain section over its entire width evenly.
  • a furnace in particular a circulating air oven or a short-time or microwave heating device, which is passed through by the grinding belt.
  • the take-up upstream, heated rollers or heated conveyor belts over which the abrasive belt is guided to use as the invention corresponding heating devices.
  • the sanding belt brought to the desired temperature in the heating device in its entire width is immediately wound on the take-up device to the jumbo roll.
  • the jumbo roll thus obtained has a uniform temperature, which is preferably at or just below the curing temperature of the thermosetting binder. It is immediately placed in the oven and heated to a temperature above the curing temperature of the thermosetting binder. Due to the preheating of the sanding belt only a relatively small energy input is necessary for further heating of the jumbo roll. The heating is done quickly and allows an increase in production. Nevertheless, occur in the jumbo roll only small temperature differences, the curing of the thermosetting binder is uniform and there are no undesirable discoloration effects.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (7)

  1. Procédé en vue de la fabrication de produits abrasifs sur des subjectiles sous la forme de rouleaux jumbo, lequel procédé comprend au moins les étapes suivantes:
    a) la mise en place d'un liant de base sur un matériau subjectile,
    b) la mise en place du produit abrasif sur le liant de base,
    c) la mise en place d'un liant de recouvrement durcissable à la chaleur sur le produit composite séché ou pré-durci provenant de l'étape b), en vue de la fabrication d'une bande abrasive,
    d) le chauffage de la bande abrasive sur toute sa largeur à une température uniforme immédiatement avant ou directement sur le dispositif d'enroulement en vue de la production de rouleaux jumbo,
    e) la production du rouleau jumbo par enroulement de la bande abrasive chauffée et pré-durcie sur le dispositif d'enroulement et, immédiatement à la suite,
    f) le durcissement du rouleau jumbo.
  2. Procédé selon la revendication 1, caractérisé en ce que le dispositif de chauffage est un dispositif à rayonnement thermique, qui irradie d'une manière uniforme sur toute sa largeur la bande abrasive avant de parvenir au dispositif d'enroulement.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de chauffage est un dispositif à rayonnement thermique, grâce auquel on irradie à chaque fois sur toute sa largeur une section de la bande externe de la bande abrasive sur le dispositif d'enroulement.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de chauffage est un four à circulation d'air, qui est traversé par la bande abrasive.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de chauffage est un dispositif de chauffage à ondes courtes ou à micro-ondes, qui est traversé par la bande abrasive.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de chauffage est un rouleau chauffé, sur lequel la bande abrasive est conduite.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la température de chauffage est ajustée à proximité ou tout juste en dessous de la température de durcissement du liant de recouvrement durcissable à la chaleur.
EP03744854A 2002-03-26 2003-03-25 Procédé de realisation de rouleaux jumbo pour produire des materiaux abrasifs Revoked EP1492647B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20204849U DE20204849U1 (de) 2002-03-26 2002-03-26 Vorrichtung zur Herstellung von Jumbo-Rollen
DE20204849U 2002-03-26
PCT/EP2003/003102 WO2003080295A1 (fr) 2002-03-26 2003-03-25 Dispositif de realisation de rouleaux jumbo pour produire des materiaux abrasifs

Publications (2)

Publication Number Publication Date
EP1492647A1 EP1492647A1 (fr) 2005-01-05
EP1492647B1 true EP1492647B1 (fr) 2006-08-30

Family

ID=7969428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03744854A Revoked EP1492647B1 (fr) 2002-03-26 2003-03-25 Procédé de realisation de rouleaux jumbo pour produire des materiaux abrasifs

Country Status (8)

Country Link
US (2) US20050279460A1 (fr)
EP (1) EP1492647B1 (fr)
AT (1) ATE337892T1 (fr)
AU (1) AU2003255632A1 (fr)
BR (1) BR0303667B1 (fr)
DE (2) DE20204849U1 (fr)
ES (1) ES2268392T3 (fr)
WO (1) WO2003080295A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576276A (en) * 1948-08-02 1951-11-27 Ohio Commw Eng Co Apparatus for making flock covered paper
US3034266A (en) * 1956-02-07 1962-05-15 Grubb Kjeld Tue Metallographic polishing
US3020139A (en) * 1960-04-18 1962-02-06 Norton Co Abrasive product
US4163647A (en) * 1971-06-23 1979-08-07 Norton Company Method for producing coated abrasives
DE2146369B2 (de) * 1971-09-16 1977-04-14 Hoechst Ag, 6000 Frankfurt Verfahren zur herstellung von flexiblen schleifmittelgebilden
DE2644552B2 (de) * 1976-10-02 1978-11-30 Hoechst Ag, 6000 Frankfurt Verfahren zur Herstellung von Schleifmitteln
US5007943A (en) * 1989-11-03 1991-04-16 Norton Company Sol-gel process alumina abrasive grain blends in coated abrasive material
US5368618A (en) * 1992-01-22 1994-11-29 Minnesota Mining And Manufacturing Company Method of making a coated abrasive article
ES2087726T3 (es) * 1992-03-03 1996-07-16 Minnesota Mining & Mfg Aglomerante termoendurecible para un articulo abrasivo.
CA2122168A1 (fr) * 1993-12-16 1995-06-17 David P. Hultman Papier renforce de polymere a resistance amelioree a la dechirure dans le sens travers

Also Published As

Publication number Publication date
BR0303667A (pt) 2004-07-13
DE50304859D1 (de) 2006-10-12
US20050279460A1 (en) 2005-12-22
ES2268392T3 (es) 2007-03-16
DE20204849U1 (de) 2002-09-26
EP1492647A1 (fr) 2005-01-05
ATE337892T1 (de) 2006-09-15
WO2003080295A1 (fr) 2003-10-02
AU2003255632A1 (en) 2003-10-08
US20090000746A1 (en) 2009-01-01
BR0303667B1 (pt) 2013-07-16

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