EP 1038637 A2 20000927 - Abrasive articles
Title (en)
Abrasive articles
Title (de)
Schleifgegenstände
Title (fr)
Articles abrasif
Publication
Application
Priority
- EP 96932205 A 19960911
- US 9614570 W 19960911
Abstract (en)
This invention pertains to an abrasive article comprising precisely shaped particles. The abrasive article may be a coated abrasive article, a bonded abrasive article or a nonwoven abrasive article. The precisely shaped particles may further comprise abrasive grits, fillers, grinding aids and lubricants. The precisely shaped particles can be made according to the following method: (a) providing a production tool having a three-dimensional body which has at least one continuous surface, said surface containing at least one opening formed in said continuous surface, said at least one opening providing access to a cavity in said three-dimensional body; (b) providing a dispensing means capable of introducing a binder precursor comprising a thermosetting resin into said at least one cavity through said at least one opening; (c) providing a means, within a curing zone, for at least partially curing said binder precursor; (d) introducing said binder precursor into at least a portion of said at least one cavity; (e) continuously moving said at least one cavity through said curing zone to at least partially cure said binder precursor to provide a solidified, handleable binder having a shape corresponding to that portion of the cavity into which the binder precursor has been introduced; (f) removing said binder from said at least one cavity; and (g) converting said binder to form a precisely shaped particle. Steps (f) and (g) may be conducted simultaneously. The particles can be bonded together to form a shaped mass, e.g. a wheel; alternatively, the particles can be bonded to a backing to form a coated abrasive article; or the particles can be bonded into a fibrous, nonwoven substrate to form a nonwoven abrasive article.
IPC 1-7
IPC 8 full level
B24D 3/02 (2006.01); B24D 3/28 (2006.01); B24D 3/34 (2006.01); B24D 11/00 (2006.01); B24D 11/02 (2006.01); C08J 5/14 (2006.01)
CPC (source: EP)
B24D 3/28 (2013.01); B24D 3/34 (2013.01); B24D 3/344 (2013.01); B24D 11/00 (2013.01); B24D 11/001 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9810896 A1 19980319; AU 7108396 A 19980402; BR 9612737 A 19990824; CA 2264872 A1 19980319; DE 69629054 D1 20030814; DE 69629054 T2 20040422; DE 69637418 D1 20080313; DE 69637418 T2 20090122; EP 0925151 A1 19990630; EP 0925151 B1 20030709; EP 1038637 A2 20000927; EP 1038637 A3 20011212; EP 1038637 B1 20080123; JP 2001500068 A 20010109; ZA 977477 B 19990222
DOCDB simple family (application)
US 9614570 W 19960911; AU 7108396 A 19960911; BR 9612737 A 19960911; CA 2264872 A 19960911; DE 69629054 T 19960911; DE 69637418 T 19960911; EP 96932205 A 19960911; EP 99125307 A 19960911; JP 51358798 A 19960911; ZA 977477 A 19970820