(19)
(11) EP 0 497 451 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.01.1993 Bulletin 1993/02

(43) Date of publication A2:
05.08.1992 Bulletin 1992/32

(21) Application number: 92300148.1

(22) Date of filing: 08.01.1992
(51) International Patent Classification (IPC)5: B24D 3/00, B24D 11/06, B29C 65/42
// B29L29/00
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 30.01.1991 GB 9102035

(71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY
St. Paul, Minnesota 55133-3427 (US)

(72) Inventors:
  • Gorsuch, Ian
    TN27 8ER Great Britain (GB)
  • Ennis, Mark Robert
    Hawkhurst, Kent, TN18 4DD, Great Britain (GB)
  • Burgess, Robert Martin
    Kent, TN18 4DD, Great Britain (GB)

(74) Representative: Bowman, Paul Alan et al
LLOYD WISE, TREGEAR & CO., Commonwealth House, 1-19 New Oxford Street
London WC1A 1LW
London WC1A 1LW (GB)


(56) References cited: : 
   
       


    (54) Abrasive belts and their manufacture


    (57) The invention discloses a method of preparing endless abrasive belts by butt joining an elongate strip without the use of reinforcing patches or the like. The invention utilises a flexible support in conjunction with a layer of hot-melt adhesive which is caused to form a continuous layer within the region of the butt joint which possesses sufficient strength to ensure the integrity of the belt during its use.





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