EP1492647A1 - Vorrichtung zur herstellung von jumbo-rollen für die fertigung von schleifmitteln - Google Patents
Vorrichtung zur herstellung von jumbo-rollen für die fertigung von schleifmittelnInfo
- Publication number
- EP1492647A1 EP1492647A1 EP03744854A EP03744854A EP1492647A1 EP 1492647 A1 EP1492647 A1 EP 1492647A1 EP 03744854 A EP03744854 A EP 03744854A EP 03744854 A EP03744854 A EP 03744854A EP 1492647 A1 EP1492647 A1 EP 1492647A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- production
- abrasives
- grinding belt
- jumbo rolls
- auflieizvorrichtung
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000003082 abrasive agent Substances 0.000 title claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- 239000011230 binding agent Substances 0.000 description 13
- 229920001187 thermosetting polymer Polymers 0.000 description 8
- 230000027455 binding Effects 0.000 description 4
- 238000009739 binding Methods 0.000 description 4
- 238000002845 discoloration Methods 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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 device for producing jumbo rolls in the production of coated abrasives.
- an endless band of carrier material is continuously provided with a basic binder, with abrasive material and at least one cover binder in several process steps connected in series.
- the thermosetting binder is dried or pre-bleached.
- the coated, dried and pre-hardened, tack-free abrasive belt is rolled up on a winder to form a so-called jumbo roll (see Gardziella, Pilato, Knop; Phenolic Resins, 2nd edition (2000), Springer Verlag, page 345) ,
- the jumbo roll is placed in an oven and there, as a rule, heated to a temperature> 130 ° C. when phenolic resins are used as binders, to a temperature above the curing temperature of the thermosetting binder.
- the sanding belt is already heated to an elevated temperature in the course of its manufacture, especially during the pre-hardening of the binding agent in the so-called binding machine, but this thermal energy passes on the way from the binding machine to the winding device through braking and guide rollers and through the cold one Hall air largely lost. It must be re-fed in the curing oven for the jumbo roll.
- the edges and the outer layers are immediately hot while the core of the jumbo roll warms up very slowly. This not only results in inhomogeneous curing of the thermosetting binder, but also in the case of blue cover bindings, a very different discoloration of the surface. Due to the temperature load, the very quickly heated and overheated parts of the sanding belt slowly change from green to brown, while the inner, cooler core of the jumbo roll remains nice and blue. In order to at least alleviate this problem, the jumbo rolls are heated up extremely slowly, which leads to high energy costs on the one hand and poor productivity on the other hand.
- the device consists in that the winding device for the pre-hardened sanding belt is directly connected or connected with a heating device with which the sanding belt is heated over its entire width to a uniform temperature.
- This temperature is expediently preferably at or just below the desired curing temperature of the thermosetting binder.
- All devices can be used as the heating device, which deliver the highest possible and controllable energy density in order to bring about the heating of the grinding belt in the shortest possible time and with the shortest possible path length.
- Such heating devices are e.g. Radiators, in particular heat or infrared radiators, which are directed such that the grinding belt is irradiated uniformly over its entire width either shortly before reaching the winding device or in each case on the outer web on the winding device in a certain section.
- a heater can also be used as a heating device, in particular a convection oven or a short-time or microwave heating device, through which the grinding belt passes.
- heated rollers or heated conveyor belts upstream of the winding device, over which the grinding belt is guided, are also to be used as heating devices corresponding to the invention.
- the entire width of the abrasive belt brought to the desired temperature in the Auflieizvoroplasty according to the invention is wound up immediately afterwards on the winding 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 amount of energy is required to further heat the jumbo roll. The heating takes place quickly and enables an increase in production. Nevertheless, there are only slight temperature differences in the jumbo roll, the curing of the thermosetting binder takes place uniformly 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)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20204849U | 2002-03-26 | ||
| DE20204849U DE20204849U1 (de) | 2002-03-26 | 2002-03-26 | Vorrichtung zur Herstellung von Jumbo-Rollen |
| PCT/EP2003/003102 WO2003080295A1 (de) | 2002-03-26 | 2003-03-25 | Vorrichtung zur herstellung von jumbo-rollen für die fertigung von schleifmitteln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1492647A1 true EP1492647A1 (de) | 2005-01-05 |
| EP1492647B1 EP1492647B1 (de) | 2006-08-30 |
Family
ID=7969428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03744854A Revoked EP1492647B1 (de) | 2002-03-26 | 2003-03-25 | Verfahren zur herstellung von jumbo-rollen für die fertigung von schleifmitteln |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US20050279460A1 (de) |
| EP (1) | EP1492647B1 (de) |
| AT (1) | ATE337892T1 (de) |
| AU (1) | AU2003255632A1 (de) |
| BR (1) | BR0303667B1 (de) |
| DE (2) | DE20204849U1 (de) |
| ES (1) | ES2268392T3 (de) |
| WO (1) | WO2003080295A1 (de) |
Family Cites Families (10)
| 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 (en) * | 1993-12-16 | 1995-06-17 | David P. Hultman | Polymer-reinforced paper having improved cross-direction tear |
-
2002
- 2002-03-26 DE DE20204849U patent/DE20204849U1/de not_active Expired - Lifetime
-
2003
- 2003-03-25 US US10/509,407 patent/US20050279460A1/en not_active Abandoned
- 2003-03-25 BR BRPI0303667-7B1A patent/BR0303667B1/pt not_active IP Right Cessation
- 2003-03-25 ES ES03744854T patent/ES2268392T3/es not_active Expired - Lifetime
- 2003-03-25 WO PCT/EP2003/003102 patent/WO2003080295A1/de not_active Ceased
- 2003-03-25 EP EP03744854A patent/EP1492647B1/de not_active Revoked
- 2003-03-25 DE DE50304859T patent/DE50304859D1/de not_active Revoked
- 2003-03-25 AT AT03744854T patent/ATE337892T1/de not_active IP Right Cessation
- 2003-03-25 AU AU2003255632A patent/AU2003255632A1/en not_active Abandoned
-
2007
- 2007-10-10 US US11/973,787 patent/US20090000746A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03080295A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20050279460A1 (en) | 2005-12-22 |
| ATE337892T1 (de) | 2006-09-15 |
| EP1492647B1 (de) | 2006-08-30 |
| US20090000746A1 (en) | 2009-01-01 |
| DE20204849U1 (de) | 2002-09-26 |
| AU2003255632A1 (en) | 2003-10-08 |
| WO2003080295A1 (de) | 2003-10-02 |
| BR0303667B1 (pt) | 2013-07-16 |
| ES2268392T3 (es) | 2007-03-16 |
| BR0303667A (pt) | 2004-07-13 |
| DE50304859D1 (de) | 2006-10-12 |
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