EP1277546A1 - Courroies abrasives avec un support de fibres vulcanisées - Google Patents

Courroies abrasives avec un support de fibres vulcanisées Download PDF

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Publication number
EP1277546A1
EP1277546A1 EP01810723A EP01810723A EP1277546A1 EP 1277546 A1 EP1277546 A1 EP 1277546A1 EP 01810723 A EP01810723 A EP 01810723A EP 01810723 A EP01810723 A EP 01810723A EP 1277546 A1 EP1277546 A1 EP 1277546A1
Authority
EP
European Patent Office
Prior art keywords
carrier material
abrasive article
endless belt
abrasive
fiber
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Withdrawn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
EP01810723A
Other languages
German (de)
English (en)
Inventor
Patrick Mueller
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.)
Sia Abrasives Industries AG
Original Assignee
Sia Abrasives Industries AG
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 Sia Abrasives Industries AG filed Critical Sia Abrasives Industries AG
Priority to EP01810723A priority Critical patent/EP1277546A1/fr
Publication of EP1277546A1 publication Critical patent/EP1277546A1/fr
Withdrawn legal-status Critical Current

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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
    • B24D11/02—Backings, e.g. foils, webs, mesh fabrics

Definitions

  • the invention relates to an abrasive article with the features the preamble of the independent claims.
  • Abrasive articles in the form of abrasive belts are known. there the abrasive is applied to a flexible backing.
  • abrasive articles e.g. Grinding wheels, it is also known to use vulcanized fiber as the carrier material.
  • the object of the present invention is to overcome the disadvantages of Avoid acquaintances, especially an abrasive article in To create a sanding belt that has a long service life and has a high grinding performance.
  • the abrasive article has a backing material and an abrasive on that applied to the carrier material by means of a binder is.
  • the abrasive article is still in the form of a closed endless belt formed.
  • the carrier material consists of vulcanized fiber. It turned out that the abrasive and the binder compared to known endless belts excellent adhesion to vulcanized fiber having.
  • a vulcanized fiber is a laminate that is characterized by Parchment of unsized papers (Römpp chemistry lexicon, 9th edition, 1992, page 4964).
  • the manufacturing process the vulcanized fiber allows an optimization of the physical Properties of vulcanized fiber with regard to the respective use.
  • the resistance of the vulcanized fiber to mechanical Strain enables long service life. simultaneously Vulkanfiber offers a good base for the binder.
  • polyester as the carrier material blistering occurs due to the uneven surface, caused by the separation of water droplets in the Abrasive grain-binder mixture during the drying process is caused. This will embed the liability of the embedded Abrasive grain on the backing material reduced. Also show both cotton and polyester fabrics have greater elongation than the volcanic fiber. Polyester film as a carrier material on the other hand, shows only a limited temperature resistance and continued limited adhesion of the abrasive the carrier material. Paper as a carrier material has the disadvantage a low strength and a lower tear and Tear resistance. Compared to these carrier materials Vulkanfiber has better material properties when used as a flat abrasive for planar surfaces.
  • the material thickness is the vulcanized fiber as carrier material less than 0.6 mm.
  • Vulcanized fiber with a material thickness between is preferred 0.25 and 0.5 mm and particularly preferred is vulcanized fiber 0.38 and 0.44 mm material thickness. This selected material thickness the vulcanized fiber that has never been used in abrasives has led to sufficient flexibility of the Carrier material and therefore allows use even at deflection points with particularly small radii. Guaranteed at the same time this material thickness sufficient stability.
  • the abrasive article has a basis weight of the vulcanized fiber material between 350 and 750 g / m 2 .
  • the basis weight of the volcanic fiber base material is preferably between 400 and 600 g / m 2 and ideally the base material has a basis weight of 450 to 540 g / m 2 .
  • the basis weight is an indicator of the density of the carrier material and is relevant with regard to the flexibility and stability of the material.
  • a vulcanized fiber material is used whose layer cohesion in the longitudinal and / or transverse direction is over 800 cN / cm.
  • the volcanic fiber material is composed of several layers of individual layers. For the determination of the layer cohesion, a layer package is expanded in the middle for stacking and continuously pulled apart by means of appropriate devices until the layer cohesion is lost.
  • Vulkanfiber is wound, stored and delivered on rolls.
  • the material is oriented in the curvature of the Role to watch. It has been found that through targeted Selection of the orientation of the vulcanized fiber base material in the longitudinal direction in the production of endless belts or at Coating with abrasive, (based on the winding direction particularly good results can be achieved can.
  • a special version of the abrasive article stands out by arranging the volcanic fiber in such a way that the Direction of movement of the endless belt with the winding direction of the rolled volcanic fiber and thus the direction of curvature Rolls of stored volcanic fiber matches.
  • a direction of movement is defined as the one used by the tape Belt grinder is specified.
  • This alignment of the Vulcanized fiber increases the flexibility of the backing material and ensures it the use according to the invention.
  • the production of abrasive belts that are wider than have the width of the uncoated vulcanized fiber material, can also do so by maintaining the flexibility of segments of vulcanized fiber material.
  • the abrasive article in that the volcanic fiber on its in the wound state outside surface is coated.
  • the abrasive coating rises at the junction over the height of the remaining band. hereby the grinding process is impaired.
  • An embodiment of the abrasive article has at least one connection point of the endless belt by two or more bevelled or ground end faces are formed (Typ 1 connection).
  • the beveled or ground end faces can be glued.
  • Another embodiment of the abrasive article has at least one Connection point of the endless belt, which by two or more end faces of the band-shaped carrier material are formed becomes.
  • the end faces denote surfaces that are perpendicular to the Are cut and butted and butted are glued with a film (type 3 connection). So that can Carrier material by means of simple processing, for example a cutting process to the required length to be brought.
  • the end faces preferably run obliquely to Longitudinal direction of the endless belt.
  • connection point has the advantage that when Use of this abrasive article only the joint is partially loaded and thus the endless belt of a lower one Exposed to stress.
  • the abrasive article contains a backing material and an abrasive which is fixed on the backing material by means of a binder.
  • This abrasive article is in the form of a self-contained endless belt.
  • the carrier material is selected such that the carrier material has a minimum tensile strength in the transverse direction of more than 47.5 N / mm 2 . At the same time, this carrier material has a tensile strength of at least 84 N / mm 2 in the longitudinal direction.
  • FIG. 1 shows an abrasive belt 1 according to the invention.
  • the abrasive belt 1 consists of a carrier 2, which is mixed with a mixture 3 of Corundum and zirconium corundum as abrasive grain (size 36) in one Phenol-formaldehyde binder system was coated.
  • the carrier 2 is a volcanic fiber from Gambröder with a Nominal thickness of 0.38 (corresponds to a thickness of 0.41 mm +/- 5%) 2.5 m long and 5 cm wide.
  • connection point 4 shows FIGS. 2a and 2b.
  • a junction 4 of type 3 see FIG. 2a butt the two end faces 7 blunt on each other and are covered by a on the back 6 of the Carrier material 2 attached adhesive film 8 glued together.
  • the connection point 4 runs obliquely to the direction of movement 9 of the sanding belt.
  • the end faces 7 are of type 1 at a connection point 4 (see Fig. 2b) beveled and sanded and each opposite end faces 7 are directly with each other without glued an excess thickness.
  • a steel tube (St35) was used with the Dimensions ( ⁇ 90 mm, wall thickness 1.5 mm, length 1000 mm) with one Angle of attack of 15 ° pressed onto a contact roller.
  • the Contact roller showed a toothing with an angle of 45 °, one Groove width of 7 mm, a groove depth of 10 mm, a web width of 11 mm and a hardness of 65 Shore A.
  • Table 1 shows the measurement data of the volcanic fiber tape and two comparison tapes. Determination of the service life t 1 Dm * vulcanized fiber 600 2.6% polyester 420 17.8% cotton fabric 300 11.3% t 1 : measurement time in seconds; if abrasive has been removed down to the backing material, the measurement was ended prematurely. ⁇ m *: percentage weight loss of abrasive due to abrasion (based on original weight)
  • the vulcanized fiber as the carrier material 2 shows a considerably better one Stability than the two comparison carrier materials. On the one hand, this is evident in the significantly longer duration of use of the volcanic fiber tape, which is 45% or 100% longer Measuring time compared to polyester or cotton fabrics.
  • the decisive factor for determining the measuring time is the point in time the abrasive grain binder system 3 down to the backing material 2 is removed. In the case of the volcanic fiber tape the measuring time before complete abrasion is reached completed. The situation measured also conveys a similar situation Weight loss of abrasive by measuring the Band before and after the test measurement was determined. Also here the Vulkanfiber points towards polyester or cotton extraordinarily good values for the loss of abrasive.
  • the production of the sanding belt is done when the volcanic fiber is unwound the curvature or direction of movement 10 in an identical manner transferred to the grinding belt or its direction of movement 9. This means that on the untreated volcanic fiber roll inner side also with the finished sanding belt comes to lie on the inside of the tape. Based on these The procedure is the volcanic fiber belt during the production process not claimed over the masses and exhibits improved Downtime.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP01810723A 2001-07-20 2001-07-20 Courroies abrasives avec un support de fibres vulcanisées Withdrawn EP1277546A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01810723A EP1277546A1 (fr) 2001-07-20 2001-07-20 Courroies abrasives avec un support de fibres vulcanisées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01810723A EP1277546A1 (fr) 2001-07-20 2001-07-20 Courroies abrasives avec un support de fibres vulcanisées

Publications (1)

Publication Number Publication Date
EP1277546A1 true EP1277546A1 (fr) 2003-01-22

Family

ID=8184047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810723A Withdrawn EP1277546A1 (fr) 2001-07-20 2001-07-20 Courroies abrasives avec un support de fibres vulcanisées

Country Status (1)

Country Link
EP (1) EP1277546A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015221294B3 (de) * 2015-10-30 2017-05-04 Neenah Gessner Gmbh Schleifscheiben, insbesondere Trennscheiben, und Herstellungsverfahren dafür

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2059583A (en) * 1934-05-21 1936-11-03 Carborundum Co Abrasive belt
US2071563A (en) * 1934-05-21 1937-02-23 Carborundum Co Abrading apparatus
US2209059A (en) * 1938-02-24 1940-07-23 Carborundum Co Sectional endless belt
GB781460A (en) * 1953-11-27 1957-08-21 Horace Frank Darby Improvements in and relating to abrading, polishing and like endless bands
US3037852A (en) * 1959-11-02 1962-06-05 Abrasive Products Inc Method of producing abrasive rolls and sheets
US3333372A (en) * 1964-12-03 1967-08-01 Pres Ou Abrasives Inc Abrasive belt
DE2042619A1 (en) * 1969-08-28 1971-05-13 Norton Co Abrasive sheet
US3656265A (en) * 1969-10-14 1972-04-18 Schaffner Mfg Co Inc Method of making an abrasive belt
US3787273A (en) * 1971-06-07 1974-01-22 Norton Co Low stretch sectional abrasive belts
US3996702A (en) * 1974-11-26 1976-12-14 Minnesota Mining And Manufacturing Company Coated abrasive product comprising fused zirconia grains and method for abrading iron
EP0104776A2 (fr) * 1982-08-27 1984-04-04 Carborundum Abrasives G.B. Limited Support flexible pour abrasif appliqué
EP0529833A1 (fr) * 1991-08-06 1993-03-03 Minnesota Mining And Manufacturing Company Courroie abrasive sans fin
WO1993012912A1 (fr) * 1991-12-20 1993-07-08 Minnesota Mining And Manufacturing Company Support pour abrasif enrobe
WO1995022434A1 (fr) * 1994-02-22 1995-08-24 Minnesota Mining And Manufacturing Company Abrasifs sur support et leurs procedes de fabrication
WO1999006182A1 (fr) * 1997-07-30 1999-02-11 Scapa Group Plc Polissage de plaquettes en semiconducteur
US5919549A (en) * 1996-11-27 1999-07-06 Minnesota Mining And Manufacturing Company Abrasive articles and method for the manufacture of same

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2059583A (en) * 1934-05-21 1936-11-03 Carborundum Co Abrasive belt
US2071563A (en) * 1934-05-21 1937-02-23 Carborundum Co Abrading apparatus
US2209059A (en) * 1938-02-24 1940-07-23 Carborundum Co Sectional endless belt
GB781460A (en) * 1953-11-27 1957-08-21 Horace Frank Darby Improvements in and relating to abrading, polishing and like endless bands
US3037852A (en) * 1959-11-02 1962-06-05 Abrasive Products Inc Method of producing abrasive rolls and sheets
US3333372A (en) * 1964-12-03 1967-08-01 Pres Ou Abrasives Inc Abrasive belt
DE2042619A1 (en) * 1969-08-28 1971-05-13 Norton Co Abrasive sheet
US3656265A (en) * 1969-10-14 1972-04-18 Schaffner Mfg Co Inc Method of making an abrasive belt
US3787273A (en) * 1971-06-07 1974-01-22 Norton Co Low stretch sectional abrasive belts
US3996702A (en) * 1974-11-26 1976-12-14 Minnesota Mining And Manufacturing Company Coated abrasive product comprising fused zirconia grains and method for abrading iron
EP0104776A2 (fr) * 1982-08-27 1984-04-04 Carborundum Abrasives G.B. Limited Support flexible pour abrasif appliqué
EP0529833A1 (fr) * 1991-08-06 1993-03-03 Minnesota Mining And Manufacturing Company Courroie abrasive sans fin
WO1993012912A1 (fr) * 1991-12-20 1993-07-08 Minnesota Mining And Manufacturing Company Support pour abrasif enrobe
WO1995022434A1 (fr) * 1994-02-22 1995-08-24 Minnesota Mining And Manufacturing Company Abrasifs sur support et leurs procedes de fabrication
US5919549A (en) * 1996-11-27 1999-07-06 Minnesota Mining And Manufacturing Company Abrasive articles and method for the manufacture of same
WO1999006182A1 (fr) * 1997-07-30 1999-02-11 Scapa Group Plc Polissage de plaquettes en semiconducteur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015221294B3 (de) * 2015-10-30 2017-05-04 Neenah Gessner Gmbh Schleifscheiben, insbesondere Trennscheiben, und Herstellungsverfahren dafür

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