초록 ▼

Precisely shaped composites and methods for making these composites are disclosed. The method of this invention comprises the steps of: (a) providing a production tool comprising a plurality of cavities; (b) providing a dispensing means capable of introducing a binder precursor comprising a thermose

Precisely shaped composites and methods for making these composites are disclosed. The method of this invention comprises the steps of: (a) providing a production tool comprising a plurality of cavities; (b) providing a dispensing means capable of introducing a binder precursor comprising a thermosetting resin into the cavities; (c) providing a means, for at least partially curing the binder precursor; (d) introducing said binder precursor into at least a portion of at least two of the cavities; (e) continuously moving the production tool through a curing zone to at least partially cure the binder precursor; (f) removing the solidified binder from the production tool; and (g) converting the solidified binder into precisely shaped composites. Steps (f) and (g) can be conducted simultaneously. The composites can be bonded together to form a shaped mass, e.g., a wheel; alternatively, the composites can be bonded to a backing to form a coated abrasive article; or the composites can be bonded into a fibrous, nonwoven substrate to form a non-woven abrasive article.

대표청구항 ▼

A method of making a plurality of discrete precisely shaped composites comprising the steps of: (a) providing a production tool which has at least one continuous surface, said production tool comprising a plurality of cavities; (b) providing a dispensing means capable of introducing a binder precurs

A method of making a plurality of discrete precisely shaped composites comprising the steps of: (a) providing a production tool which has at least one continuous surface, said production tool comprising a plurality of cavities; (b) providing a dispensing means capable of introducing a binder precursor comprising a thermosetting resin into said cavities; (c) providing a means within a curing zone for at least partially curing said binder precursor; (d) introducing said binder precursor onto said production tool so as to fill at least a portion of at least two of said cavities; (e) continously moving said production tool through said curing zone wherein radiation energy is transmitted through said production tool to at least partially cure said binder precursor to provide a solidified binder having a shape corresponding to that portion of the production tool into which the binder precursor has been introduced; (f) removing said solidified binder from said production tool; and (g) converting said solidified binder into a plurality of discrete, precisely shaped composites.